Power supply module

Abstract

This invention provides a power module, including a first circuit board, a second circuit board, and a connector. The second circuit board is disposed opposite to the first circuit board. The connector is disposed between the first and second circuit boards and electrically connects the first and second circuit boards. The connector includes a support portion, a soldering portion, and a fixing portion. The support portion is configured to support the first and second circuit boards, the soldering portion is configured to solder the first and second circuit boards, and the fixing portion is configured to be fixedly connected to the first and second circuit boards respectively through adhesive, wherein the adhesive has a temperature resistance range greater than 150°C.

Claims

1. A power supply module, comprising: First circuit board; A second circuit board is disposed opposite to the first circuit board; The device also includes a connector disposed between the first circuit board and the second circuit board, and electrically connecting the first circuit board and the second circuit board; wherein the connector includes: a support portion configured to support between the first circuit board and the second circuit board; a soldering portion configured to solder the first circuit board and the second circuit board; and a fixing portion configured to be fixedly connected to the first circuit board and the second circuit board respectively through an adhesive, wherein the adhesive has a temperature resistance range greater than 150°C.

2. The power module as described in claim 1, wherein, The connector includes a metal connecting block, the supporting portion of which is a cylindrical metal block, and the fixing portion includes: a first fixing post extending from the surface of the cylindrical metal block facing the first circuit board toward the first circuit board; and a second fixing post extending from the surface of the cylindrical metal block facing the second circuit board toward the second circuit board.

3. The power module as described in claim 2, wherein, If a plane perpendicular to the extension direction of the first fixed column is defined as the cross-section, then the cross-sectional area of ​​both the first fixed column and the second fixed column is less than 1 / 2 of the cross-sectional area of ​​the cylindrical metal block.

4. The power module as described in claim 2, wherein, The welded part is the surface of the cylindrical metal block facing the first circuit board and the second circuit board, excluding the surfaces of the first fixing post and the second fixing post.

5. The power module as described in claim 2, wherein, The first fixing post and the second fixing post are respectively disposed on the surfaces facing the first circuit board and the second circuit board.

6. The power module as described in claim 1, wherein, The connector includes a terminal block comprising: a body, which is made of plastic; a plurality of support posts disposed on the body, at least some of which are configured to form the support portion with the body; at least two pins passing through the body and protruding from the surface of the body facing the first circuit board and the second circuit board, at least some of which are configured to electrically connect the first circuit board and the second circuit board; and an adhesive post disposed on the body and configured to form the fixing portion.

7. The power module as described in claim 6, wherein, The main body is a columnar structure. On the surfaces of the main body facing the first circuit board and the second circuit board, the support pillar and the adhesive pillar are respectively provided.

8. The power module as described in claim 7, wherein, The height of the support column is equal to the vertical distance between the first circuit board and the second circuit board.

9. The power module as described in claim 8, wherein, On the surface of the main body facing the first circuit board and the second circuit board, the height of the adhesive post and the pin is greater than the height of the support post.

10. The power module as claimed in claim 9, wherein, The first circuit board and the second circuit board are provided with an adhesive hole corresponding to the adhesive post. The adhesive post is disposed in the adhesive hole. The gap between the adhesive hole and the adhesive post is filled with the adhesive. The first circuit board and the second circuit board are provided with a pin hole corresponding to the pin. Solder is disposed around the pin hole. During reflow soldering, the solder flows into the pin hole to achieve the soldering of the pin.

11. The power module as described in claim 6, wherein, At least two of the support posts and / or at least one of the pins are configured as the adhesive post.

12. The power module as described in claim 6, wherein, On the surface of the terminal block facing the first circuit board and the second circuit board, there are four support posts. The four support posts are respectively disposed at the four corners of the surface of the terminal block facing the first circuit board and the second circuit board. The pin and the adhesive post are disposed at the middle position of the surface of the terminal block facing the first circuit board and the second circuit board.

13. The power module as described in claim 1, wherein, The connector includes a metal connecting block and a terminal block. The supporting portion of the metal connecting block is a cylindrical metal block. The fixing portion includes: a first fixing post extending from the surface of the cylindrical metal block facing the first circuit board toward the first circuit board; and a second fixing post extending from the surface of the cylindrical metal block facing the second circuit board toward the second circuit board. A plane perpendicular to the extension direction of the first fixing post is defined as a cross-section, and the cross-sectional areas of both the first and second fixing posts are less than half the cross-sectional area of ​​the cylindrical metal block. The terminal block includes: a body, which is a plastic part; a plurality of supporting posts disposed on the body, at least a portion of which are configured to form the supporting portion with the body; at least two pins passing through the body and protruding from the surface of the body facing the first and second circuit boards, at least a portion of which are configured to electrically connect the first and second circuit boards; and an adhesive post disposed on the body and configured to form the fixing portion.

14. The power module as claimed in claim 1, wherein, Both the first circuit board and the second circuit board are provided with a fixing hole, the fixing part is disposed in the fixing hole, and the gap between the fixing hole and the fixing part is filled with the adhesive.

15. The power module as described in claim 14, wherein, The fixing hole is a blind hole. The distance between the end of the fixing part that extends into the fixing hole and the bottom wall of the fixing hole is greater than or equal to 0.1 mm and less than or equal to 0.5 mm, and / or the distance between the side wall of the fixing part that extends into the fixing hole and the inner wall of the fixing hole is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

16. The power module as described in claim 14, wherein, The adhesive is applied to the fixing part, and the fixing part with the adhesive is located inside the fixing hole.

17. The power module as described in claim 14, wherein, The adhesive is disposed in the fixing hole, and the fixing part is located inside the fixing hole where the adhesive is disposed.

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