Direct current resistance assembly upper cover for new energy automobile connector

Abstract

The utility model provides a new energy automobile connector is with direct current resistance subassembly upper cover, including the cover plate, with the fixed connection of direct current resistance subassembly's casing, the outer end surface of cover plate is provided with two recesses, the heat dissipation groove of symmetrical arrangement, the heat dissipation groove is arc, and the recessed end of heat dissipation groove is opposite arrangement. Through setting up the heat dissipation groove of symmetry on the outer end surface of cover plate, effectively increased the contact area of upper cover and outside environment. This structure is more favorable to the flow and convection of air in the groove, thereby significantly improve the heat exchange efficiency, can produce the heat of component inside fastly lead out, effectively prevented the high temperature accumulation.

Description

Technical Field

[0001] This utility model relates to the technical field of DC resistor components for new energy vehicles, specifically a cover for a DC resistor component for a connector in a new energy vehicle. Background Technology

[0002] Connectors in new energy vehicles are one of the core components of the vehicle's electrical system, and their performance stability directly affects the vehicle's power output, safe operation, and energy efficiency management. DC resistor assemblies, as key functional modules within the connectors, play a crucial role in current regulation and signal transmission, and their operating status significantly impacts the reliability of the entire vehicle's electrical system. The top cover, as one of the main structural components of the DC resistor assembly, not only encapsulates and protects the internal resistive elements but also needs sufficient mechanical strength to withstand vibrations and impacts during vehicle operation, while ensuring installation stability and long-term durability.

[0003] In existing technologies, the top cover of DC resistor components is mostly made of metal or high thermal conductivity composite materials. However, its heat dissipation structure design is relatively simple, usually relying solely on the contact between the top cover end face and the external environment for heat exchange. This heat dissipation method is limited by the contact area and air convection efficiency. In actual operation, especially under conditions of high-speed vehicle driving or high-current operation, the heat generated inside the component cannot be dissipated in time, easily leading to temperature accumulation. Sustained high temperatures not only accelerate the aging of resistor elements and affect the stability of electrical performance, but may also cause problems such as poor connector contact, decreased insulation performance, or even localized overheating damage, seriously threatening the electrical safety of the entire vehicle.

[0004] Therefore, there is an urgent need for a DC resistor component cover with a reasonable structure and excellent heat dissipation performance, which can achieve efficient heat dissipation under complex working conditions, ensure that the component always operates within a safe temperature range, and thus improve the overall reliability and service life of the connector for new energy vehicles. Utility Model Content

[0005] To address the technical problems in the background art, this utility model discloses a cover for a DC resistor assembly for a connector in a new energy vehicle.

[0006] This utility model provides a cover for a DC resistor assembly for a new energy vehicle connector, including a cover plate, which is fixedly connected to the housing of the DC resistor assembly. The outer end face of the cover plate is provided with two recessed, symmetrically arranged heat dissipation grooves. The heat dissipation groove is arc-shaped and runs through the opposite sides of the cover plate; The recessed ends of the heat dissipation grooves are arranged opposite each other.

[0007] Furthermore, the cross-section of the heat dissipation groove has a V-shaped structure.

[0008] Furthermore, the outer end face of the cover plate is also provided with protruding connecting posts.

[0009] Furthermore, the side of the connecting post is provided with a flat snap-fit ​​surface.

[0010] Furthermore, the side of the connecting column is provided with a groove; The groove extends axially along the connecting column and passes through both axial ends of the connecting column.

[0011] Furthermore, the inner end of the groove extends to the bottom of the heat dissipation slot and is connected to the heat dissipation slot through a connecting groove.

[0012] Furthermore, the end face of the connecting column is arranged at an angle, forming an angle with the axis of the connecting column.

[0013] The beneficial effects of this utility model are: 1. By setting symmetrical heat dissipation grooves on the outer end face of the cover plate, the contact area between the top cover and the external environment is effectively increased. This structure is more conducive to air flow and convection within the grooves, thereby significantly improving heat exchange efficiency and enabling the rapid dissipation of heat generated inside the components, effectively preventing high temperature accumulation.

[0014] 2. The heat dissipation slots feature a symmetrical, concave-to-convex arc design. This not only achieves uniform heat dissipation and prevents localized overheating, but also creates a unique airflow channel. This channel guides airflow within the module, forming orderly convection and accelerating heat transfer and dissipation. This design not only improves heat dissipation efficiency but also reduces the time hot air remains inside the module, lowering the risk of localized overheating.

[0015] 3. This relatively curved structure also helps to disperse stress, increasing the heat dissipation area while maximizing the overall mechanical strength and structural stability of the top cover, enabling it to better withstand vibrations and impacts during vehicle operation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 yes Figure 2 Sectional view of AA; In the diagram: 1. Cover plate; 2. Heat dissipation groove; 3. Connecting post; 4. Snap-fit ​​surface; 5. Groove; 6. Connecting groove; 7. Positioning ring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] like Figure 1-3 As shown, this utility model discloses a cover for a DC resistor assembly for a new energy vehicle connector, including a cover plate 1, which is fixedly connected to the housing of the DC resistor assembly. A protruding positioning ring 7 is provided on the connection end face of the cover plate 1 and the housing for positioning the cover plate 1 during installation.

[0020] Two recessed, symmetrically arranged heat dissipation grooves 2 are provided on the outer end face of the cover plate 1. The heat dissipation grooves 2 are arc-shaped and extend through opposite sides of the cover plate 1. The recessed ends of the heat dissipation grooves 2 are arranged opposite each other. The advantages of this design are: 1. By providing symmetrical heat dissipation grooves 2 on the outer end face of the cover plate 1, the contact area between the cover and the external environment is effectively increased. This structure is more conducive to airflow and convection within the grooves, thereby significantly improving heat exchange efficiency and enabling rapid heat dissipation from the inside of the module, effectively preventing high temperature accumulation. 2. The symmetrical arc-shaped design of the heat dissipation grooves 2 with opposite recessed ends not only achieves uniform heat dissipation and avoids local overheating, but also forms a unique airflow channel that guides air to form orderly convection within the module, thereby accelerating heat transfer and dissipation. This design not only improves heat dissipation efficiency but also reduces the residence time of hot air inside the module, reducing the risk of local overheating. 3. This relatively curved structure also helps to disperse stress, increasing the heat dissipation area while maximizing the overall mechanical strength and structural stability of the top cover, enabling it to better withstand vibrations and impacts during vehicle operation.

[0021] The cross-section 4 of the heat dissipation groove 2 has a V-shaped structure. This structure expands the heat dissipation surface area in contact with the air, significantly improving the efficiency and capacity of heat exchange. Furthermore, the air flowing across the surface of the top cover creates a directional flow channel. When the vehicle is in motion or there is external airflow, the V-shaped groove guides air to enter, pass through, and flow out of the heat dissipation area more smoothly, effectively breaking down the original air stagnation layer (boundary layer) and enhancing the forced convection cooling effect. This structure promotes air turbulence and renewal more effectively than a flat surface or a simple arc-shaped groove 5, thereby continuously carrying away heat.

[0022] The outer end face of the cover plate 1 is also provided with a protruding connecting post 3 for connecting the other components of the resistor assembly, and the connection is made by plugging. In order to prevent relative rotation between the connecting post 3 and the other components, which would affect its performance, the side of the connecting post 3 is provided with two symmetrically arranged, flat snap-fit ​​surfaces 4 to achieve surface connection.

[0023] The end face of the connecting post 3 is inclined, forming an angle with its axial direction. This inclined end face serves as a "guide surface" during assembly, allowing for initial contact between the connecting post 3 and external components (such as bolts and connectors) without precise axial alignment. This reduces alignment difficulty during installation, improves assembly efficiency, and is particularly suitable for assembly scenarios in new energy vehicle connectors where internal space is limited and visibility is poor. Furthermore, external mating components directly contact this inclined surface, eliminating the need for additional shims or component angle adjustments, reducing assembly gaps, ensuring structural stability after connection, and preventing loosening due to end face mismatch.

[0024] Two symmetrically arranged grooves 5 are provided on the side of the connecting post 3. The grooves 5 are adjacent to the arc-shaped groove and extend along the axial direction of the connecting post 3, passing through both ends of the connecting post 3. The inner end of the groove 5 extends to the bottom of the heat dissipation groove 2 and is connected to the heat dissipation groove 2 through the connecting groove 6. This arrangement not only increases the heat dissipation area, but also allows the component connected to the connecting post 3 to communicate with the outside through the grooves 5, so that the heat generated by this component during operation can be dissipated to the outside through the grooves 5. The connecting groove 6 connects the heat dissipation groove 2 area with the groove 5 area of ​​the connecting post 3, so that the heat dissipation structures are no longer isolated. Airflow can flow, exchange, and circulate in a complex manner across the entire surface of the top cover, breaking the static air insulation layer and upgrading passive heat dissipation to a more efficient convection heat dissipation mode to improve the heat dissipation effect.

[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cover for a DC resistor assembly for a new energy vehicle connector, comprising a cover plate (1) fixedly connected to the housing of the DC resistor assembly, characterized in that: The outer end face of the cover plate (1) is provided with two recessed, symmetrically arranged heat dissipation grooves (2); The heat dissipation groove (2) is arc-shaped and extends through the opposite sides of the cover plate (1); The recessed ends of the heat dissipation groove (2) are arranged opposite each other.

2. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 1, characterized in that: The heat dissipation groove (2) has a V-shaped cross-section.

3. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 1, characterized in that: The outer end face of the cover plate (1) is also provided with a protruding connecting post (3).

4. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 3, characterized in that: The side of the connecting post (3) is provided with a flat snap-fit ​​surface (4).

5. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 3, characterized in that: The side of the connecting column (3) is provided with a groove (5); The groove (5) extends along the axial direction of the connecting column (3) and passes through both ends of the connecting column (3).

6. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 5, characterized in that: The inner end of the groove (5) extends to the bottom of the heat dissipation groove (2) and is connected to the heat dissipation groove (2) through the connecting groove (6).

7. The cover for the DC resistor assembly of the new energy vehicle connector according to claim 3, characterized in that: The end face of the connecting column (3) is arranged at an angle, forming an angle with the axis of the connecting column (3).

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