Novel controller using single-tube IGBT (Insulated Gate Bipolar Translator)
By designing a new controller using a single-tube IGBT in the DCAC module, using a combination of aluminum substrate, PCBA control board, alumina ceramic substrate and thermal grease, the failure and shortening of single-tube IGBT due to high heat is solved, achieving longer service life, higher safety and lower cost.
Patent Information
- Application Number
- CN202420980671.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The power conversion devices using single-tube IGBT in existing DCAC modules cannot be dissipated in time due to high heat, resulting in failure and shortening of component life, which makes use of unsatisfactory.
A new controller using a single-tube IGBT was designed, using an aluminum substrate and a PCBA control board, a combination of alumina ceramic substrate and thermal grease. The thermal grease is coated on the bottom of the alumina ceramic substrate. The terminal pins of the single-tube IGBT were passed through high-temperature resistant insulating paper and were welded and fixed with the PCBA control board. The pressure strips were fixed by one to two fixed methods.
Through the combination of thermally conductive silicon grease and alumina ceramic substrate, the heat during operation of single-tube IGBT is promptly conducted, which reduces the overall temperature, extends the product service life, improves safety, reduces material use, saves costs, and simplifies the process of dismantling and replacing damaged parts.
Smart Images
Figure CN222582646U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power modules, in particular to a novel controller using a single-tube IGBT. Background Art
[0002] The DCAC module is used to convert DC power into AC power. It has an automatic adjustment function and can automatically adjust the output voltage according to the change of input voltage, thereby ensuring the stability of the output voltage. Currently, most of the power conversion devices inside the DCAC modules on the market use a standard package IGBT power module controller that integrates six IGBT single tubes into one package.
[0003] In the prior art, a single-tube IGBT solution may fail during use because the high heat cannot be dissipated in time, and the temperature of each component continues to accumulate and the temperature becomes higher and higher, which shortens the life of the component and results in unsatisfactory use effect. Summary of the invention
[0004] The utility model provides a novel controller using a single-tube IGBT to solve the problems in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new controller using a single-tube IGBT, comprising an aluminum substrate and a PCBA control board, an alumina ceramic substrate is arranged on the top of the aluminum substrate, at least one single-tube IGBT is arranged on the top of the alumina ceramic substrate, high-temperature resistant insulating paper is arranged on the bottom of the PCBA control board, the terminal pins of the single-tube IGBT pass through the high-temperature resistant insulating paper and are welded and fixed to the PCBA control board, and the bottom of the alumina ceramic substrate is coated with thermal conductive silicone grease.
[0006] Furthermore, a positioning pin with one end penetrating into the interior of the alumina ceramic substrate is provided on the top of the aluminum substrate.
[0007] Furthermore, a mounting groove is provided on the top of the aluminum substrate, and a temperature sensor is embedded in the mounting groove.
[0008] Furthermore, at least three studs are arranged on the top of the aluminum substrate, and the tops of the studs extend to the bottom of the PCBA control board and are fixedly connected to the PCBA control board through rivet screws.
[0009] Furthermore, the number of the single-tube IGBTs is at least six.
[0010] Furthermore, a pressure strip is commonly provided on the tops of two adjacent single-tube IGBTs, and a strip is passed through the middle of the pressure strip and one end is screwed into the interior of the alumina ceramic substrate.
[0011] Furthermore, both ends of the pressure strip are sleeved with insulating sleeves.
[0012] Compared with the prior art, the utility model provides a new controller using a single-tube IGBT, which has the following beneficial effects:
[0013] This new controller uses a single-tube IGBT. The combination of alumina ceramic substrate and thermal conductive silicone grease allows the heat generated by the single-tube IGBT during operation to be promptly transferred to the aluminum substrate, which reduces the overall temperature of the product and improves the service life of the product. The high-temperature resistant insulating paper separates the solder joints of each component at the bottom of the PCBA control board and does not allow current connection, making it safer to use. The pressure strip uses a one-to-two fixing method to fix the single-tube IGBT, reducing material usage and increasing production capacity, saving costs, and making it quick and convenient to disassemble and replace damaged parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 It is the structural explosion diagram of the utility model;
[0016] Figure 3 This is a schematic diagram of the aluminum substrate structure of the utility model.
[0017] In the figure: 1. Aluminum substrate; 11. Stud; 12. Positioning pin; 13. Mounting slot; 14. Temperature sensor; 2. Alumina ceramic substrate; 3. Single-tube IGBT; 4. Pressure strip; 41. Insulating sleeve; 5. High temperature resistant insulating paper; 6. PCBA control board. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-3The utility model discloses a novel controller using a single-tube IGBT, comprising an aluminum substrate 1 and a PCBA control board 6, wherein an alumina ceramic substrate 2 is arranged on the top of the aluminum substrate 1, wherein at least one single-tube IGBT3 is arranged on the top of the alumina ceramic substrate 2, and a high-temperature resistant insulating paper 5 is arranged on the bottom of the PCBA control board 6, wherein the terminal pins of the single-tube IGBT3 are resistant to high-temperature insulating paper 5 and are welded and fixed to the PCBA control board 6, and the bottom of the alumina ceramic substrate 2 is coated with thermal conductive silicone grease, and the high-temperature resistant insulating paper 5 serves to separate the solder joints of each component at the bottom of the PCBA control board 6 from the current connection, and since a certain temperature is generated when the single-tube IGBT3 is working, the temperature of each component continues to accumulate and the temperature is getting higher and higher, which will reduce and shorten the life of the component, and the cooperation of the alumina ceramic substrate 2 and the thermal conductive silicone grease enables the heat generated by the single-tube IGBT3 when working to be timely conducted to the aluminum substrate 1, thereby avoiding the failure caused by high heat, and the overall temperature of the product can be reduced, thereby improving the service life of the product.
[0020] Specifically, a positioning pin 12 with one end penetrating into the interior of the alumina ceramic substrate 2 is provided on the top of the aluminum substrate 1. The positioning pin 12 positions the alumina ceramic substrate 2 to prevent reverse installation, and at the same time, the four sides of the alumina ceramic substrate 2 are placed beyond the aluminum substrate 1.
[0021] Specifically, a mounting groove 13 is provided on the top of the aluminum substrate 1, and a temperature sensor 14 is embedded in the mounting groove 13. The temperature sensor 14 is installed in the mounting groove 13 and is fixed by screws to facilitate later disassembly and replacement.
[0022] Specifically, at least three studs 11 are arranged on the top of the aluminum substrate 1, and the top of the stud 11 extends to the bottom of the PCBA control board 6 and is fixedly connected to the PCBA control board 6 by rivet screws. The arrangement of the three studs 11 can play an anti-foolproof role and avoid the poor electrical performance caused by looseness due to vibration after welding the single-tube IGBT3 and the PCBA control board 6.
[0023] Specifically, the number of the single-tube IGBT3 is at least six, and a pressure strip 4 is commonly provided on the tops of two adjacent single-tube IGBT3. A pressure strip 4 is pierced through the middle of the pressure strip 4 and one end is screwed into the interior of the alumina ceramic substrate 2. The six single-tube IGBT3 are divided into two rows, with three in each row, and are pressed tightly on the alumina ceramic substrate 2 by four pressure strips 4. The pressure strip 4 fixes the single-tube IGBT3 in a one-to-two fixing manner, which reduces material usage and has high production capacity, saves costs, and is quick and convenient to disassemble and replace damaged parts.
[0024] Specifically, both ends of the pressure strip 4 are sleeved with insulating sleeves 41 , and the insulating sleeves 41 play an insulating role.
[0025] In summary, the new controller using a single-tube IGBT, the cooperation of the alumina ceramic substrate 2 and the thermal conductive silicone grease, allows the heat generated by the single-tube IGBT3 when working to be promptly transferred to the aluminum substrate 1, so that the overall temperature of the product can be reduced, thereby improving the service life of the product. The high-temperature resistant insulating paper 5 serves to separate the solder joints of each component at the bottom of the PCBA control board 6 from current connection, making it safer to use. The pressure strip 4 uses a one-to-two fixing method to fix the single-tube IGBT3, reducing material usage and increasing production capacity, saving costs, and making it quick and convenient to disassemble and replace damaged parts.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A new controller using a single-tube IGBT, characterized in that: The invention comprises an aluminum substrate (1) and a PCBA control board (6), wherein an alumina ceramic substrate (2) is arranged on the top of the aluminum substrate (1), at least one single-tube IGBT (3) is arranged on the top of the alumina ceramic substrate (2), and high-temperature resistant insulating paper (5) is arranged on the bottom of the PCBA control board (6). The terminal pins of the single-tube IGBT (3) pass through the high-temperature resistant insulating paper (5) and are welded and fixed to the PCBA control board (6), and the bottom of the alumina ceramic substrate (2) is coated with thermal conductive silicone grease.
2. According to claim 1, a novel controller using a single-tube IGBT is characterized in that: A positioning pin (12) having one end penetrating into the interior of the alumina ceramic substrate (2) is provided on the top of the aluminum substrate (1).
3. The novel controller using a single-tube IGBT according to claim 1 is characterized in that: A mounting groove (13) is provided on the top of the aluminum substrate (1), and a temperature sensor (14) is embedded inside the mounting groove (13).
4. The novel controller using a single-tube IGBT according to claim 1 is characterized in that: At least three studs (11) are arranged on the top of the aluminum substrate (1), and the tops of the studs (11) extend to the bottom of the PCBA control board (6) and are fixedly connected to the PCBA control board (6) via rivet screws.
5. The novel controller using a single-tube IGBT according to claim 1 is characterized in that: The number of the single-tube IGBTs (3) is at least six.
6. The novel controller using a single-tube IGBT according to claim 1 is characterized in that: A pressure strip (4) is commonly provided on the tops of two adjacent single-tube IGBTs (3), and a strip is passed through the middle of the pressure strip (4) and one end is screwed into the interior of the alumina ceramic substrate (2).
7. The novel controller using a single-tube IGBT according to claim 6 is characterized in that: Insulating sleeves (41) are sleeved on both ends of the pressure strip (4).