Temperature measurement structure for IGBT module of energy storage converter
By setting a temperature sensing groove on the back of the IGBT module substrate of the energy storage converter and filling it with thermally conductive silver paste, combined with a wireless temperature sensor, the problems of large temperature measurement deviation and high voltage risk in the prior art are solved, and high-precision temperature measurement is achieved.
Patent Information
- Application Number
- CN202520247653.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Existing temperature measurement methods for IGBT modules in energy storage converters suffer from large temperature deviations and the risk of high voltage introduction, making it difficult to obtain accurate temperatures safely and stably.
A temperature measurement structure for an energy storage converter IGBT module is designed, including an IGBT module substrate, a temperature measurement groove, a temperature sensor, thermally conductive silver paste, and a control module. The temperature measurement accuracy is improved by setting a temperature measurement groove on the back of the IGBT module substrate and filling it with thermally conductive silver paste, combined with a wireless temperature sensor.
It achieves safe and stable temperature acquisition, is easy to operate and has high temperature measurement accuracy, thus improving the accuracy and safety of IGBT module temperature measurement.
Smart Images
Figure CN223896924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of energy storage converters, and in particular to the technical field of a temperature measurement structure for an IGBT module of an energy storage converter. Background Technology
[0002] With the popularization of new energy sources and the increasing demand for smart grids, energy storage converters are playing an increasingly important role in new energy power generation, power systems, and distributed energy. As the core component of energy storage converters, the IGBT module's operating status directly affects the performance and reliability of the energy storage converter. During operation, IGBT modules generate losses, which are converted into heat, leading to increased junction temperature. Lowering the junction temperature of the IGBT module can improve its performance and reliability, requiring effective heat dissipation design. Junction temperature is a valid basis for evaluating the heat dissipation design of the IGBT module; therefore, the junction temperature of the IGBT module is related to the overall reliability of the energy storage converter. Current traditional testing methods involve directly applying temperature measuring points to the surface of the IGBT module's internal chip for testing. Figure 1 The image shows a traditional test diagram where the temperature measurement point is directly applied to the surface of the chip inside the IGBT module. This method has the drawbacks of inadequate contact between the temperature measurement point and the chip surface, leading to excessive temperature measurement deviation, and the risk of introducing high voltage into the temperature measuring instrument. Summary of the Invention
[0003] The purpose of this invention is to solve the problems in the prior art by proposing a temperature measurement structure for IGBT modules in energy storage converters, which can safely and stably obtain the temperature of IGBT modules, is easy to operate, and has high temperature measurement accuracy.
[0004] To achieve the above objectives, this utility model proposes a temperature measurement structure for an IGBT module of an energy storage converter, comprising an IGBT module substrate, IGBT chips, a temperature measuring groove, a temperature sensor, thermally conductive silver paste, and a control module. Several IGBT chips are fixedly disposed on the front side of the IGBT module substrate, and a temperature measuring groove is disposed on the back side of the IGBT module substrate opposite the IGBT chip positions. A temperature sensor is fixedly disposed within the temperature measuring groove, which is filled with thermally conductive silver paste. The temperature sensor is connected to the control module, which is mounted on the IGBT module substrate.
[0005] Preferably, the IGBT module substrate is a thermally conductive copper substrate.
[0006] Preferably, the bottom of the IGBT chip is attached to the IGBT module substrate, and a large-area thermally conductive pad is provided at the contact area between the IGBT chip and the IGBT module substrate. The large-area thermally conductive pad is fixedly connected to the temperature measuring groove.
[0007] Preferably, the temperature sensing groove is positioned directly opposite the center of the IGBT chip.
[0008] Preferably, multiple temperature sensors are fixedly installed inside the temperature measuring groove.
[0009] Preferably, the temperature sensor is a wireless temperature sensor.
[0010] Preferably, the thermally conductive silver paste is uniformly and densely filled in the temperature measuring groove, and the outer surface of the thermally conductive silver paste is flush with the opening of the temperature measuring groove.
[0011] The beneficial effects of this utility model are as follows: This utility model combines an IGBT module substrate, an IGBT chip, a temperature sensing groove, a temperature sensor, thermally conductive silver paste, and a control module. After experimental optimization, it can safely and stably obtain the temperature of the IGBT module through the temperature sensor, which is convenient to operate and has high temperature measurement accuracy.
[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the temperature measurement structure of an IGBT module for an energy storage converter according to this utility model.
[0014] In the diagram: 1-IGBT module substrate, 2-IGBT chip, 3-temperature sensor. Detailed Implementation
[0015] See Figure 1 This utility model discloses a temperature measurement structure for an IGBT module in an energy storage converter, comprising an IGBT module substrate 1, IGBT chips 2, a temperature measuring groove, a temperature sensor 3, thermally conductive silver paste, and a control module. Several IGBT chips 2 are fixedly disposed on the front side of the IGBT module substrate 1. A temperature measuring groove is disposed on the back side of the IGBT module substrate 1, opposite the IGBT chip 2 positions. The temperature sensor 3 is fixedly disposed within the temperature measuring groove, which is filled with thermally conductive silver paste. The temperature sensor 3 is connected to the control module, which is mounted on the IGBT module substrate 1. The IGBT module substrate 1 is a thermally conductive copper substrate. The bottom of the IGBT chip 2 is attached to the IGBT module substrate 1. A large-area thermally conductive pad is provided at the contact area between the IGBT chip 2 and the IGBT module substrate 1. The large-area thermally conductive pad is fixedly connected to a temperature sensing groove. The temperature sensing groove is directly opposite the center of the IGBT chip 2. Multiple temperature sensors 3 are fixedly installed in the temperature sensing groove. The temperature sensors 3 are wireless temperature sensors. The thermally conductive silver paste is uniformly and densely filled in the temperature sensing groove. The outer surface of the thermally conductive silver paste is flush with the opening of the temperature sensing groove.
[0016] This invention combines an IGBT module substrate 1, an IGBT chip 2, a temperature sensing groove, a temperature sensor 3, thermally conductive silver paste, and a control module. Through experimental optimization, it can safely and stably obtain the temperature of the IGBT module through the temperature sensor 3, which is convenient to operate and has high temperature measurement accuracy.
[0017] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.
Claims
1. A temperature measurement structure for an IGBT module of an energy storage converter, characterized in that: The system includes an IGBT module substrate (1), an IGBT chip (2), a temperature measuring groove, a temperature sensor (3), thermally conductive silver paste, and a control module. Several IGBT chips (2) are fixedly disposed on the front side of the IGBT module substrate (1). A temperature measuring groove is disposed on the back side of the IGBT module substrate (1) facing the IGBT chip (2). A temperature sensor (3) is fixedly disposed in the temperature measuring groove. The temperature measuring groove is filled with thermally conductive silver paste. The temperature sensor (3) is connected to the control module. The control module is disposed on the IGBT module substrate (1).
2. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: The IGBT module substrate (1) is a thermally conductive copper substrate.
3. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: The bottom of the IGBT chip (2) is attached to the IGBT module substrate (1). A large area of thermally conductive pads is provided at the contact area between the IGBT chip (2) and the IGBT module substrate (1). The large area of thermally conductive pads is fixedly connected to the temperature measuring groove.
4. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: The temperature measuring groove is positioned directly opposite the center of the IGBT chip (2).
5. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: Multiple temperature sensors (3) are fixedly installed inside the temperature measuring groove.
6. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: The temperature sensor (3) is a wireless temperature sensor (3).
7. The temperature measurement structure for an IGBT module in an energy storage converter as described in claim 1, characterized in that: The thermally conductive silver paste is uniformly and densely filled in the temperature measuring groove, and the outer surface of the thermally conductive silver paste is flush with the opening of the temperature measuring groove.