Double-sided heat dissipation automobile headlamp driver

Abstract

The utility model discloses a double -sided heat dissipation's car headlamp driver, including base, the inside of base is equipped with drive circuit board, the upper and lower surface of drive circuit board is equipped with a plurality of scattered arrangement's power device respectively, the upper portion of base is connected with upper cover, and the upper cover is equipped with the recess or the boss corresponding with power device respectively on base and, and the surface of power device and recess or boss between coating has the heat -conducting glue. The utility model discloses power device scattered arrangement on the upper and lower surface of drive circuit board, effectively promoted the efficiency of heat dissipation, makes the driver can satisfy higher power demand. The utility model discloses base and the upper cover are equipped with the recess or the boss corresponding with power device respectively on, and the surface of power device and recess or boss between coating has the heat -conducting glue, can fast transfer heat to base and the upper cover, guarantees the heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the field of driver heat dissipation technology, specifically relating to a double-sided heat dissipation automotive headlight driver. Background Technology

[0002] Currently, automotive headlights place increasingly higher demands on the intelligent control functions and cost of drive controllers, often requiring efficient heat dissipation solutions within high power and limited space. Under these conditions, a common heat dissipation solution for drive controllers is to use heat sinks on both sides of the PCBA. However, this type of heat dissipation solution still has the following drawbacks:

[0003] 1. Even with a further increase in the power of the drive controller, overheating may still occur during product operation.

[0004] 2. Increasing the PCBA board area requires expanding the usable space to meet heat dissipation requirements, which is not conducive to saving space and reducing costs.

[0005] 3. Using aluminum alloys with better thermal conductivity, such as through cold forging, to improve heat dissipation is not conducive to reducing costs. Utility Model Content

[0006] The purpose of this invention is to provide a double-sided heat-dissipating automotive headlight driver to solve the problems mentioned in the background section. The double-sided heat-dissipating automotive headlight driver provided by this invention features high heat dissipation efficiency, high space utilization, and low cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a double-sided heat dissipation automotive headlight driver, including a base, a drive circuit board inside the base, a plurality of power devices arranged in a dispersed manner on the upper and lower surfaces of the drive circuit board, a top cover connected above the base, and grooves or protrusions corresponding to the power devices on the base and the top cover, and thermally conductive adhesive is coated between the surface of the power devices and the grooves or protrusions.

[0008] To reduce production costs and ensure consistent appearance, both the base and the top cover are made of die-cast aluminum alloy.

[0009] To further improve the heat dissipation efficiency of the driver, heat dissipation fins are provided on the surfaces of the base and the top cover, and the heat dissipation fins are arranged parallel to the short side of the base.

[0010] To further secure the top cover to the base, the top cover has several through holes around its perimeter, and the base has threaded holes corresponding to the through holes. The ends of the screws pass through the through holes and are threaded into the threaded holes.

[0011] To ensure stable fixation of the drive circuit board, support ribs are provided on both the base and the top cover.

[0012] To achieve rapid positioning of the drive circuit board, the top cover, and the base, the base is further provided with two positioning posts, the top cover is provided with positioning holes corresponding to the positioning posts, and the drive circuit board is provided with semi-circular grooves corresponding to the positioning posts.

[0013] To meet the sealing requirements of the actuator and to form a strong bond between the base and the top cover, ensuring the stability and reliability of the connection and reducing loosening or displacement caused by vibration or impact, the base is further provided with a groove containing sealant. The top cover is provided with sealing ribs corresponding to the groove.

[0014] To ensure the drive circuit board has a unique and correct installation position, which is beneficial to improving the production efficiency of the production line, the base is further provided with anti-misalignment protrusions, the top cover is provided with anti-misalignment bumps corresponding to the anti-misalignment protrusions, and the drive circuit board is provided with notches and grooves corresponding to the anti-misalignment protrusions and anti-misalignment bumps.

[0015] Furthermore, in this utility model, the method for implementing a double-sided heat dissipation automotive headlight driver includes the following steps:

[0016] (i) Apply thermally conductive adhesive to the grooves and protrusions of the base;

[0017] (ii) Align the notch of the drive circuit board with the anti-misalignment protrusion, and then place the drive circuit board on the support rib on the base.

[0018] (iii) Apply thermally conductive adhesive to the surface of the power devices above the drive circuit board;

[0019] (iv) Apply sealant to the glue tank;

[0020] (v) Align the positioning hole with the positioning post and make the anti-misalignment protrusion correspond to the anti-misalignment protrusion. Then put the top cover on the base and tighten it with screws.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model distributes power devices on the upper and lower surfaces of the drive circuit board, which effectively improves heat dissipation efficiency and enables the driver to meet higher power requirements.

[0023] 2. The base and top cover of this utility model are respectively provided with grooves or protrusions corresponding to the power devices, and thermally conductive adhesive is coated between the surface of the power devices and the grooves or protrusions, which can quickly transfer heat to the base and top cover, ensuring heat dissipation effect.

[0024] 3. The base and top cover of this utility model are both made of die-cast aluminum alloy. The surfaces of the base and top cover are anodized. The base and top cover use the same material and surface treatment process, so a single supplier can complete the manufacturing and transportation, which effectively reduces production costs and ensures good appearance consistency and a more beautiful appearance.

[0025] 4. The base and the top cover of this utility model are provided with support ribs. Through the cooperation of the upper and lower support ribs, the drive circuit board is stably fixed under the locking force of the screws.

[0026] 5. The base of this utility model is provided with a glue groove containing sealant, and the top cover is provided with a sealing glue rib corresponding to the glue groove. On the one hand, it meets the sealing requirements of the driver, and on the other hand, after the sealant is cured, it can form a strong bond between the base and the top cover, ensuring the stability and reliability of the connection between the two and reducing loosening or displacement caused by factors such as vibration or impact.

[0027] 6. The heat dissipation parameters such as the height, spacing, and arrangement direction of the heat dissipation fins of this utility model can be adjusted according to the specific circumstances of the project, thereby improving the heat dissipation efficiency of the driver by increasing the heat dissipation area and optimizing the natural convection heat dissipation effect.

[0028] 7. The base of this utility model is also provided with anti-misalignment protrusions, and the upper cover is provided with anti-misalignment protrusions corresponding to the anti-misalignment protrusions. The drive circuit board is provided with notches and grooves corresponding to the anti-misalignment protrusions and anti-misalignment protrusions, so that the drive circuit board has a unique and correct installation position when it is installed, which is conducive to improving the production efficiency of the production line. Attached Figure Description

[0029] Figure 1 This is an exploded view of the structure of this utility model.

[0030] Figure 2 This is a schematic diagram of the structure of the top cover of this utility model.

[0031] Figure 3 This is a schematic diagram of the structure of the base of this utility model.

[0032] In the diagram: 1. Screw; 2. Drive circuit board; 3. Sealant; 4. Base; 41. Positioning post; 42. Adhesive groove; 43. Anti-misalignment protrusion; 44. Threaded hole; 5. Thermal conductive adhesive; 6. Top cover; 61. Anti-misalignment protrusion; 62. Through hole; 63. Sealant rib; 64. Positioning hole; 7. Heat dissipation fins; 8. Groove; 9. Boss; 10. Support rib. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figures 1-3 The present invention provides the following technical solution: a double-sided heat dissipation automotive headlight driver, including a base 4, a drive circuit board 2 is provided inside the base 4, a plurality of power devices are respectively provided on the upper and lower surfaces of the drive circuit board 2, an upper cover 6 is connected above the base 4, and grooves 8 or bosses 9 corresponding to the power devices are respectively provided on the base 4 and the upper cover 6, and thermally conductive adhesive 5 is coated between the surface of the power device and the grooves 8 or bosses 9.

[0036] By adopting the above technical solution, this utility model distributes the power devices on the upper and lower surfaces of the drive circuit board 2, effectively improving the heat dissipation efficiency and enabling the driver to meet higher power requirements. The base 4 and the top cover 6 of this utility model are respectively provided with grooves 8 or protrusions 9 corresponding to the power devices, and thermally conductive adhesive 5 is coated between the surface of the power devices and the grooves 8 or protrusions 9, which can quickly transfer heat to the base 4 and the top cover 6, ensuring the heat dissipation effect.

[0037] Specifically, both the base 4 and the top cover 6 are made of die-cast aluminum alloy. The surfaces of the base 4 and the top cover 6 are anodized to obtain a higher thermal conductivity to optimize heat dissipation. In addition to the advantages in heat dissipation, this combination of material and surface treatment has strong corrosion resistance, which is sufficient to easily meet the requirements of the stringent salt spray test, while also making the appearance more beautiful.

[0038] By adopting the above technical solution, the base 4 and the top cover 6 use the same materials and surface treatment process, so a single supplier can complete their manufacturing and transportation, effectively reducing production costs and ensuring good appearance consistency and a more aesthetically pleasing appearance.

[0039] Specifically, the upper cover 6 has four through holes 62 around its perimeter, and the base 4 has threaded holes 44 corresponding to the through holes 62. The end of the screw 1 passes through the through holes 62 and is threaded into the threaded holes 44.

[0040] By adopting the above technical solution, the upper cover 6 and the base 4 are locked together by screw 1. Compared with the snap-fit ​​connection method in the prior art, this method is beneficial to improving the strength and connection stability of the driver.

[0041] Specifically, both the base 4 and the top cover 6 are provided with support ribs 10, which correspond to the edge of the drive circuit board 2.

[0042] By adopting the above technical solution, and with the cooperation of the upper and lower support ribs 10, the drive circuit board 2 is stably fixed under the locking force of the screw 1.

[0043] Specifically, the base 4 is provided with two positioning posts 41, the upper cover 6 is provided with positioning holes 64 corresponding to the positioning posts 41, and the drive circuit board 2 is provided with semi-circular grooves corresponding to the positioning posts 41.

[0044] By adopting the above technical solution, the drive circuit board 2, the upper cover 6, and the base 4 can be quickly positioned.

[0045] Specifically, the base 4 is provided with a glue groove 42, the glue groove 42 is provided with sealant 3, and the top cover 6 is provided with a sealing glue rib 63 corresponding to the glue groove 42.

[0046] By adopting the above technical solution, the sealing requirements of the driver are met on the one hand, and after the sealant 3 is cured, a firm bond can be formed between the base 4 and the top cover 6, ensuring the stability and reliability of the connection between the two and reducing loosening or displacement caused by factors such as vibration or impact.

[0047] Example 2

[0048] The difference between this embodiment and embodiment 1 is that: specifically, heat dissipation fins 7 are provided on the surfaces of the base 4 and the top cover 6 respectively. The arrangement direction of the heat dissipation fins 7 is set in conjunction with the assembly position of the car headlight. In this embodiment, it is preferred that the heat dissipation fins 7 are arranged parallel to the short side of the base 4, and the entire driver is at a 40-degree angle to the ground.

[0049] By adopting the above technical solution, the heat dissipation-related parameters such as the height, spacing, and arrangement direction of the heat dissipation fins 7 can be adjusted according to the specific circumstances of the project, thereby improving the heat dissipation efficiency of the driver by increasing the heat dissipation area and optimizing the natural convection heat dissipation effect.

[0050] Example 3

[0051] The difference between this embodiment and embodiment 1 is that: specifically, the base 4 is also provided with an anti-misalignment protrusion 43, the upper cover 6 is provided with an anti-misalignment protrusion 61 corresponding to the anti-misalignment protrusion 43, and the drive circuit board 2 is provided with a notch groove corresponding to the anti-misalignment protrusion 43 and the anti-misalignment protrusion 61.

[0052] By adopting the above technical solution, the drive circuit board 2 has a unique and correct installation position, which is conducive to improving the production efficiency of the production line.

[0053] Example 4

[0054] Furthermore, the implementation method of the double-sided heat dissipation automotive headlight driver of this utility model includes the following steps:

[0055] (i) Apply thermally conductive adhesive 5 to the groove 8 and the boss 9 of the base 4;

[0056] (ii) Align the notch of the drive circuit board 2 with the anti-misalignment protrusion 43, and then place the drive circuit board 2 on the support rib 10 on the base 4.

[0057] (iii) Apply thermally conductive adhesive 5 to the surface of the power device above the drive circuit board 2;

[0058] (iv) Apply sealant 3 into the glue tank 42;

[0059] (v) Align the positioning hole 64 with the positioning post 41, and make the anti-misalignment protrusion 61 correspond to the anti-misalignment protrusion 43. Then, put the upper cover 6 on the base 4 and lock it with the screw 1.

[0060] In summary, this invention distributes power devices across the upper and lower surfaces of the drive circuit board 2, effectively improving heat dissipation efficiency and enabling the driver to meet higher power demands. The base 4 and upper cover 6 of this invention are respectively provided with grooves 8 or protrusions 9 corresponding to the power devices, and thermally conductive adhesive 5 is coated between the surface of the power devices and the grooves 8 or protrusions 9, allowing for rapid heat transfer to the base 4 and upper cover 6, ensuring effective heat dissipation. Both the base 4 and upper cover 6 are die-cast from aluminum alloy and anodized. Using the same material and surface treatment process, both the base 4 and upper cover 6 can be manufactured and transported by a single supplier, effectively reducing production costs and ensuring good aesthetic consistency. Both the base 4 and upper cover 6 are provided with support ribs 10. Through the cooperation of the upper and lower support ribs 10, and the tightening force of the screws 1, the drive circuit board 2 is stably fixed. The base 4 of this invention has a glue groove 42 containing sealant 3, and the upper cover 6 has a corresponding sealing rib 63. This satisfies the sealing requirements of the driver, and after the sealant 3 cures, it forms a strong bond between the base 4 and the upper cover 6, ensuring the stability and reliability of the connection and reducing loosening or displacement caused by vibration or impact. The height, spacing, and arrangement direction of the heat dissipation fins 7 can be adjusted according to specific project requirements, thereby increasing the heat dissipation area and optimizing natural convection cooling to improve the driver's heat dissipation efficiency. The base 4 also has an anti-misalignment protrusion 43, and the upper cover 6 has an anti-misalignment protrusion 61 corresponding to the protrusion 43. The drive circuit board 2 has a notch corresponding to the anti-misalignment protrusion 43 and the anti-misalignment protrusion 61, ensuring a unique and correct installation position for the drive circuit board 2, which improves production line efficiency.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided heat-dissipating automotive headlamp driver comprising a base, characterized in that: The base has a drive circuit board inside, and several power devices are arranged separately on the upper and lower surfaces of the drive circuit board. The base is connected to a top cover. The base and the top cover are respectively provided with grooves or protrusions corresponding to the power devices, and thermally conductive adhesive is applied between the surface of the power devices and the grooves or protrusions.

2. The automotive headlight driver with double-sided heat dissipation according to claim 1, characterized in that: Both the base and the top cover are made of die-cast aluminum alloy.

3. The automotive headlight driver with double-sided heat dissipation according to claim 1, characterized in that: Heat dissipation fins are provided on the surfaces of the base and the top cover, and the heat dissipation fins are arranged parallel to the short side of the base.

4. The automotive headlight driver with double-sided heat dissipation according to claim 1, characterized in that: The upper cover has several through holes around its perimeter, and the base has threaded holes corresponding to the through holes. The end of the screw passes through the through hole and is threadedly connected to the threaded hole.

5. A double-sided heat dissipation automotive headlight driver according to claim 1, characterized in that: Both the base and the top cover are equipped with supporting ribs.

6. The automotive headlight driver with double-sided heat dissipation according to claim 1, characterized in that: The base is provided with two positioning posts, the upper cover is provided with positioning holes corresponding to the positioning posts, and the drive circuit board is provided with semi-circular grooves corresponding to the positioning posts.

7. A double-sided heat dissipation automotive headlight driver according to claim 1, characterized in that: The base is provided with a glue groove, and the glue groove contains sealant.

8. A double-sided heat dissipation automotive headlight driver according to claim 7, characterized in that: The upper cover is provided with sealing rubber ribs corresponding to the rubber groove.

9. A double-sided heat dissipation automotive headlight driver according to claim 1, characterized in that: The base is also provided with anti-misalignment protrusions, the top cover is provided with anti-misalignment bumps corresponding to the anti-misalignment protrusions, and the drive circuit board is provided with notches and grooves corresponding to the anti-misalignment protrusions and anti-misalignment bumps.

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