An OBC battery aluminum alloy die-cast housing

Abstract

The utility model discloses a kind of OBC battery aluminum alloy die-casting shell, including casting shell, the surface of casting shell is equipped with several radiating fins, the inside top of casting shell is equipped with several OBC equipment mounting screw holes of different sizes, the inside of casting shell is equipped with wire harness counterbore being communicated with outside, the outside of casting shell is equipped with connector mounting surface, connector mounting surface is equipped with several mounting holes being communicated with inside and outside, the outside bottom of casting shell is equipped with along edge, along edge is equipped with several fixing holes, the bottom of along edge is equipped with sealing groove.The utility model is reasonable in structure and utilizes the limited space of shell, the mode of installing fan in top surface radiating fin, while improving the strength of casting, can guarantee the heat dissipation effect of casting shell, can effectively avoid the error that the overall size of casting is too large and heat dissipation is uneven by using the method that side wall increases radiating rib, material cost is saved while overall structure is also durable.

Description

Technical Field

[0001] This utility model belongs to the field of OBC housing technology, specifically relating to an aluminum alloy die-cast housing for an OBC battery. Background Technology

[0002] In the current market where the development and research of new energy vehicles are the mainstream, the emission requirements for new energy vehicles are becoming increasingly stringent. Considering the requirements for heat dissipation and sealing functions of the OBC, the requirements for the weight and volume of the whole vehicle, and the requirements for impact resistance safety, it is necessary to produce high-precision, high-strength, and high-density aluminum alloy die-cast structural parts.

[0003] A search revealed a Chinese patent with authorization number CN 210379170 U, which discloses an aluminum alloy die-casting part for an OBC battery. The part includes a casting shell made of aluminum alloy die-casting. The general structure of the casting shell is a rectangular frame. An equipment mounting base for assembling battery equipment is integrally formed inside the rectangular frame. The equipment mounting base is provided with multiple equipment mounting slots of different sizes. One side of the equipment mounting base and the inner wall of the casting shell have reserved wiring ports for laying leads. Three sides of the casting shell are provided with reinforcing ribs, and the other side of the casting shell is provided with multiple heat dissipation vents.

[0004] However, the existing technology has the following problems: although the casting shell has reinforcing ribs on three sides, the heat dissipation of the entire casting shell is poor. In practical use, the temperature may be too high, causing the vehicle to lose power or even catch fire. The overall airtightness is not completely waterproof, which also has certain drawbacks in rainy weather. Therefore, the device has certain limitations in use. Therefore, there is an urgent need for an aluminum alloy die-cast shell for OBC batteries to solve the above problems. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide an aluminum alloy die-cast housing for OBC batteries.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0007] An aluminum alloy die-cast housing for an OBC battery includes a cast housing with several heat sinks on its surface, several OBC device mounting threaded holes of different sizes on the top inner side of the cast housing, a wire harness countersunk hole communicating with the outside on one inner side of the cast housing, a connector mounting surface on the outer side of the cast housing with several mounting holes communicating with the inside, an edge on the bottom outer side of the cast housing with several fixing holes, and a sealing groove at the bottom of the edge.

[0008] Furthermore, the connector mounting surface has a light guide bolt mounting hole on the lower side of one of the mounting holes, and the light guide bolt mounting hole is directly opposite the indicator light of the internal OBC device. This structural design, combined with the use of light guide bolts and thread-locking adhesive, allows for a direct view of the real-time status of the internal device while also ensuring an overall airtightness of IP67, meeting the requirements of various usage scenarios.

[0009] Furthermore, the casting housing is a rectangular frame die-cast from aluminum alloy. The top of the casting housing has several back posts, the installation positions of which correspond to the installation positions of the OBC device's mounting threaded holes. This structural design increases the structural strength of the casting housing while ensuring that the mounting bolts of the internal OBC device do not protrude beyond the casting housing, guaranteeing the OBC device can be locked in place, and also ensuring the product's IP67 airtightness requirement.

[0010] Furthermore, the heat sinks are arranged with a larger tail and a smaller head, and are of uniform height, radiating outwards from the center of the casting shell. Mounting positions for cooling fans of different sizes are reserved at the center of each heat sink. This structural design maximizes heat dissipation while maintaining an aesthetically pleasing appearance.

[0011] Furthermore, the casting housing has a non-functional surface on one side and a reserved functional surface on the other side. The non-functional surface ensures the minimum thickness required for strength, while the reserved functional surface is used to add functionality to subsequent machining ports. This structural design ensures that the non-functional surface of the casting housing achieves the minimum thickness required for strength, while the reserved functional surface ensures subsequent machining and added functionality.

[0012] The beneficial effects of this utility model are as follows: The structure of this utility model is ingenious and reasonable. The OBC equipment makes reasonable use of the limited space of the shell from installation to wiring, which is simple and beautiful. Moreover, the non-functional surface of the casting shell is made to ensure the thinnest thickness to guarantee strength, while the functional surface ensures the integrity of the function. The way of installing the fan in the heat sink on the top surface can improve the strength of the casting while ensuring the heat dissipation effect of the casting shell. It can effectively avoid the error of making the overall size of the casting too large and the heat dissipation uneven by adding heat dissipation ribs to the side wall. The overall structure saves material costs and is also durable. Attached Figure Description

[0013] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the axial side structure of an aluminum alloy die-cast housing for an OBC battery according to an embodiment of the present invention;

[0015] Figure 2 This is a top view of an OBC battery aluminum alloy die-cast housing according to an embodiment of the present invention;

[0016] Figure 3 This is a side view of an OBC battery aluminum alloy die-cast housing according to an embodiment of the present invention;

[0017] Figure 4 This is a bottom view of the aluminum alloy die-cast housing of an OBC battery according to an embodiment of the present invention;

[0018] The symbols for the main components are explained below:

[0019] 1. Cast housing; 2. Heat sink; 3. Threaded hole for OBC equipment mounting; 4. Countersunk hole for wire harness; 5. Connector mounting surface; 6. Mounting hole; 7. Edge; 8. Fixing hole; 9. Sealing groove; 10. Light guide bolt mounting hole; 11. Back post; 12. Mounting position; 13. Non-functional surface; 14. Reserved functional surface. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-4 As shown, this utility model discloses an aluminum alloy die-cast housing for an OBC battery. The surface of the casting housing 1 is provided with several heat sinks 2. The top inner side of the casting housing 1 is provided with several OBC device mounting threaded holes 3. The inner side of the casting housing 1 is provided with a wire harness countersunk hole 4 that communicates with the outside. The outer side of the casting housing 1 is provided with a connector mounting surface 5. The connector mounting surface 5 is provided with several mounting holes 6 that communicate with the inside. The bottom outer side of the casting housing 1 is provided with an edge 7. The edge 7 is provided with several fixing holes 8. The bottom of the edge 7 is provided with a sealing groove 9.

[0022] Preferably, the connector mounting surface 5 has a light guide bolt mounting hole 10 on the lower side of one of the mounting holes 6, with the light guide bolt mounting hole 10 facing the indicator light of the internal OBC device. This structural design, combined with the use of light guide bolts and thread-locking adhesive, allows for a clear view of the real-time status of the internal device while also meeting the overall airtightness requirement of IP67, satisfying various usage scenarios. In practice, other structural shapes for the light guide bolt mounting hole 10 can also be considered depending on the specific circumstances.

[0023] Preferably, the casting housing 1 is a rectangular frame die-cast from aluminum alloy. The top of the casting housing 1 has several back posts 11, the installation positions of which correspond to the installation positions of the OBC device mounting threaded holes 3. This structural design increases the structural strength of the casting housing 1, while ensuring that the mounting bolts of the internal OBC device do not protrude beyond the casting housing 1, guaranteeing the OBC device can be locked, and also ensuring the product's IP67 airtightness requirement. In practice, other structural shapes of the back posts 11 can also be considered depending on the specific circumstances.

[0024] Preferably, the heat sinks 2 are arranged with a larger tail and a smaller head, and are of uniform height, radiating outwards from the center of the casting housing 1. Mounting positions 12 for different sizes of cooling fans are reserved at the center of each heat sink 2. This structural design maximizes heat dissipation while maintaining an aesthetically pleasing appearance. In practice, other structural shapes of the heat sinks 2 can also be considered depending on the specific circumstances.

[0025] Preferably, the casting housing 1 has a non-functional surface 13 on one side and a reserved functional surface 14 on the other side. The non-functional surface 13 ensures the minimum thickness for strength, while the reserved functional surface 14 is used to add functionality to the subsequent processing ports. This structural design ensures that the non-functional surface 13 of the casting housing 1 has the minimum thickness to ensure strength, while the reserved functional surface 14 ensures subsequent processing and adds functionality. In practice, other structural shapes of the casting housing 1 can also be considered depending on the specific circumstances.

[0026] In this embodiment, the casting housing 1 is made of die-cast aluminum alloy. The general structure of the casting housing 1 is a rectangular frame. The casting housing 1 is integrally formed with a device mounting for assembling battery equipment. The OBC device mounting threaded holes 3 of different sizes facilitate the replacement of different types of OBC devices at any time. The wall thickness of the inner perimeter and the top surface of the casting housing 1 is made to ensure strength while achieving the thinnest possible thickness, saving materials and reducing weight. A light guide bolt mounting hole 10 is reserved on one side of the casting housing 1, which is directly opposite the indicator light of the internal OBC device. The mounting hole 6 is set for wiring. The top surface of the casting housing 1 is provided with evenly distributed heat sinks 2. The wire harness countersunk holes 4 designed inside the casting housing 1 can be connected to the external fan through the wire harness. The OBC device is installed on the top surface by adding a back post 11. A sealing groove 9 is opened around the bottom edge 7. A specific sealing ring is used with the sealing groove 9. Finally, a flat plate is used to lock it directly, which can achieve the overall IP67 airtightness requirement of the product.

[0027] The light guide bolt mounting hole 10 of the casting housing 1 is directly opposite the indicator light of the internal OBC device. With the use of the light guide bolt and thread sealant, the real-time status of the device can be seen intuitively, and the overall airtightness can reach IP67, which can meet various usage scenarios.

[0028] The top surface of the casting housing 1 is provided with evenly distributed heat sinks 2. The center of the heat sink 2 is reserved for the installation position 12 of cooling fans of different specifications. All the heat sinks 2 are arranged to radiate outward from the center of the cooling fan, so as to maximize the heat dissipation effect. This not only ensures the aesthetics, but also ensures that the product temperature does not exceed 85°C when the OBC is running at full power with the cooling fan added. At the same time, the direction and height of the heat sink 2 have been carefully calculated to ensure that the mold is formed in one piece, and that it is slightly higher than the installed cooling fan, so as to protect the fan.

[0029] The wiring harness of the internal OBC device can be connected to the external fan through the wiring harness countersunk hole 4. After the wiring harness is connected, sealant can be poured into the wiring harness countersunk hole 4. The sealant blocks the wiring harness countersunk hole 4 to the greatest extent, achieving the product's IP67 airtightness requirement while saving material costs.

[0030] The OBC device is installed in the casting housing 1 by adding a back column 11. This serves two purposes: first, it increases the structural strength of the housing; second, it ensures that the mounting bolts of the internal OBC device do not protrude beyond the casting housing 1, thus ensuring that the OBC device can be locked and also meeting the product's IP67 airtightness requirements.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An aluminum alloy die-cast housing for an OBC battery, characterized in that: The device includes a casting housing (1), the surface of which is provided with several heat sinks (2), the inner top of which is provided with several OBC equipment mounting threaded holes (3) of different sizes, the inner side of which is provided with a wire harness countersunk hole (4) that communicates with the outside, the outer side of which is provided with a connector mounting surface (5), the connector mounting surface (5) is provided with several mounting holes (6) that communicate with the inside, the outer bottom of which is provided with an edge (7), the edge (7) is provided with several fixing holes (8), and the bottom of the edge (7) is provided with a sealing groove (9).

2. The aluminum alloy die-cast housing for an OBC battery according to claim 1, characterized in that: The connector mounting surface (5) has a light guide bolt mounting hole (10) on the lower side of one of the mounting holes (6), and the light guide bolt mounting hole (10) is directly opposite the indicator light of the internal OBC device.

3. The aluminum alloy die-cast housing for an OBC battery according to claim 2, characterized in that: The casting housing (1) is a rectangular frame made of aluminum alloy die casting. The top of the casting housing (1) is provided with several back posts (11), and the installation positions of the several back posts (11) correspond to the installation positions of the OBC equipment mounting threaded holes (3).

4. The aluminum alloy die-cast housing for an OBC battery according to claim 3, characterized in that: The heat sinks (2) are arranged with a large tail and a small head, and are of uniform height. They are arranged to radiate outward from the center of the casting shell (1). The center of the heat sinks (2) is reserved for the installation position (12) of cooling fans of different specifications.

5. The OBC battery aluminum alloy die-cast housing according to claim 4, characterized in that: The casting housing (1) has a non-functional surface (13) on one side and a reserved functional surface (14) on the other side. The non-functional surface (13) ensures the minimum thickness for strength, and the reserved functional surface (14) is used to add functionality to the subsequent processing port.

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