Inverter device and electronic equipment
By installing temperature detection modules at the air inlet of the inverter unit and inside the IGBT module, the blockage of the dust filter can be determined by the temperature difference, which solves the problem that the existing technology cannot detect the blockage of the dust filter, and enables timely equipment maintenance and stable performance.
Patent Information
- Application Number
- CN202422638883.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing inverters cannot effectively detect whether the dust filter is blocked, which leads to reduced heat dissipation efficiency and equipment performance problems, and users find it difficult to detect and maintain them in a timely manner.
Temperature detection modules are installed at the air inlet of the inverter and inside the IGBT module. By comparing the temperature difference between the air inlet and the IGBT module, it is determined whether the dust filter is blocked, and the controller outputs an indication signal to notify the user.
It enables timely detection and notification of dust filter blockage, preventing equipment temperature rise and performance degradation, and improving the timeliness of maintenance and equipment stability.
Smart Images
Figure CN223626158U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of inverter technology, and in particular relates to an inverter device and electronic equipment. Background Technology
[0002] An inverter is a device used to convert direct current (DC) generated by an appliance into alternating current (AC), and it is widely used in photovoltaic power generation, wind power generation, and industrial power supplies. To ensure that inverters operate efficiently and stably, they are typically designed with dedicated ventilation ducts for heat dissipation management. Dust filters are installed in these ventilation ducts to filter the air entering the inverter, preventing dust and foreign objects from entering and protecting internal components from contamination and damage. Over time, these dust filters inevitably accumulate suspended particles and dust from the air, leading to blockage. Once the dust filter is blocked, the airflow in the ventilation ducts will be significantly reduced, resulting in a substantial decrease in the inverter's internal heat dissipation efficiency. This can cause problems such as increased equipment temperature and performance degradation, and may even lead to overheating protection or shutdown.
[0003] Because the dust filter is installed inside the inverter, users cannot directly observe or identify its blockage during daily use. This causes significant inconvenience for timely maintenance and replacement. Existing inverter products typically cannot effectively detect dust filter blockage, and users often only discover the problem when inverter performance deteriorates significantly or equipment malfunctions, missing the optimal maintenance opportunity. Utility Model Content
[0004] This invention provides an inverter device and electronic equipment, which aims to solve the problem that existing technologies cannot effectively detect whether dust filters are clogged.
[0005] This utility model embodiment is implemented as follows: the inverter device provided by this utility model includes: an IGBT module; a first temperature detection module, disposed at the air inlet of the inverter device, for detecting the temperature of the air inlet of the inverter device and outputting a first temperature detection signal; a second temperature detection module, disposed within the IGBT module, for detecting the temperature of the IGBT module and outputting a second temperature detection signal; and a controller, electrically connected to the IGBT module, the controller being used to receive the first temperature detection signal and the second temperature detection signal, and outputting an indication signal according to the first temperature detection signal and the second temperature detection signal.
[0006] Furthermore, the first temperature detection module is electrically connected to the controller, or the first temperature detection module is wirelessly connected to the controller.
[0007] Furthermore, the second temperature detection module is electrically connected to the controller, or the second temperature detection module is wirelessly connected to the controller.
[0008] Furthermore, the inverter device also includes an indicator module electrically connected to the controller, the indicator module being used to receive the indicator signal.
[0009] Furthermore, the inverter device also includes a display module, which is electrically connected to the controller and is used to receive the indication signal.
[0010] Furthermore, the indicator module includes a buzzer and / or an LED light.
[0011] Furthermore, the controller includes: a signal receiving unit, configured to receive the first temperature detection signal and the second temperature detection signal, and also configured to output the first temperature detection signal and the second temperature detection signal; a signal conversion unit, electrically connected to the signal receiving unit, configured to convert the first temperature detection signal and the second temperature detection signal into a first temperature value and a second temperature value, and also configured to output the first temperature value and the second temperature value; and a main control unit, electrically connected to the signal conversion unit, configured to receive the first temperature value and the second temperature value, and also configured to output an indication signal.
[0012] Furthermore, the first temperature detection module includes a first temperature sensor, and the second temperature detection module includes a second temperature sensor.
[0013] This utility model embodiment also provides an electronic device, which includes the inverter device as described above.
[0014] This utility model provides an inverter device and electronic device. The inverter device includes: an IGBT module; a first temperature detection module disposed at the air inlet of the inverter device, used to detect the temperature of the air inlet of the inverter device and output a first temperature detection signal; a second temperature detection module disposed within the IGBT module, used to detect the temperature of the IGBT module and output a second temperature detection signal; and a controller electrically connected to the IGBT module, the controller being used to receive the first temperature detection signal and the second temperature detection signal, and output an indication signal based on the first temperature detection signal and the second temperature detection signal. In this utility model, by detecting the temperature of the IGBT module through the second temperature detection module and detecting the air inlet temperature of the inverter device through the first temperature detection module, the effect of detecting whether the dust filter in the inverter device is blocked can be achieved. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the module structure of the electronic device provided in this embodiment of the utility model;
[0016] Figure 2 This is a schematic diagram of the module structure of the inverter device provided in this embodiment of the utility model;
[0017] Figure 3 This is a schematic diagram of the application environment of the inverter device provided in this embodiment of the utility model;
[0018] Figure 4 yes Figure 2 A schematic diagram of the module structure of the controller of the inverter device described herein.
[0019] Explanation of key component symbols: 1000, electronic equipment; 100, inverter device; 10, IGBT module; 20, first temperature detection module; 30, second temperature detection module; 40, controller; 50, indicator module; 60, display module; 41, signal receiving unit; 42, signal conversion unit; 43, main control unit. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] Please see Figure 1The electronic device 1000 in this embodiment of the present invention may include the inverter device 100. Specifically, the electronic device 1000 may be a power electronic device, a household appliance, a renewable energy device, a power management device, an industrial device, a smart grid device, or other electronic equipment. The electronic device 1000 includes an inverter device 100 for power conversion.
[0022] Please refer to the following: Figure 2 and Figure 3 The inverter device 100 of this utility model embodiment includes: an IGBT module 10, a first temperature detection module 20, a second temperature detection module 30, and a controller 40. The IGBT module 10 is the core component of the inverter device 100, and the temperature of the IGBT module 10 affects the power generation efficiency of the inverter device 100. In this utility model embodiment, the IGBT module 10 may specifically include IGBTs of models IKW75N60T, FS75R12KE3, FF300R12KT4, FF450R12ME4, IKW30N60T, CM75TF-24H, CM300DY-24H, CM600HA-24H, 6MBI75S-120, and 6MBI450U-120.
[0023] See also Figure 2 and Figure 3 The inverter device 100 typically has a ventilation duct for heat dissipation. A dust filter is installed within the ventilation duct to filter out dust-laden and unfiltered cold air. The inverter device 100 also has an air inlet that connects to the external environment and is also connected to the dust filter. A first temperature detection module 20 is located at the air inlet of the inverter device 100 and is used to detect the temperature at the air inlet. The first temperature detection module 20 is used to detect the ambient temperature of the inverter device 100. After detecting the ambient temperature, the first temperature detection module 20 generates and outputs a first temperature detection signal. This first temperature detection signal contains the temperature information at the air inlet of the inverter device 100.
[0024] Furthermore, since the IGBT module 10 is a key module of the inverter device 100, its temperature affects the power generation efficiency of the inverter device 100. Therefore, IGBT temperature detection is an essential function in the inverter device 100. Thus, the second temperature detection module 30 is installed within the IGBT module 10 to detect its temperature. After detecting the temperature of the IGBT module 10, the second temperature detection module 30 generates and outputs a second temperature detection signal. This second temperature detection signal contains the temperature information of the IGBT module 10.
[0025] The inverter device 100 also includes a controller 40, which is electrically connected to the IGBT module 10. The controller 40 receives a first temperature detection signal output by the first temperature detection module 20 and a second temperature detection signal output by the second temperature detection module 30. The controller 40 outputs an indication signal based on the first and second temperature detection signals. Optionally, the controller 40 may specifically include chips of the following models: STM32F103, STM32H743, STM32F407, STM32G431, MSP430F5529, TMS320F28027, K22F, K64F, LPC1768, and Zynq-7000.
[0026] Specifically, since the inverter device 100 is usually equipped with a dust filter to filter out dust in the air, and the normal ventilation and heat dissipation of the inverter device 100 will be affected when the dust filter is blocked, it is necessary to detect the blockage of the dust filter for the inverter device 100.
[0027] See also Figure 2 and Figure 3 In this invention, a second temperature detection module 30 is provided inside the IGBT module 10 to detect the internal temperature of the IGBT module 10. However, the internal temperature of the IGBT module 10 only reflects its own heat generation and cannot determine whether the temperature increase is due to the dust filter being blocked, affecting the heat dissipation of the IGBT module 10. For example, the temperature increase of the IGBT module 10 may also be caused by a fault in the IGBT module 10 itself or by an increase in the load on the IGBT module 10. Therefore, the temperature of the IGBT module 10 alone cannot accurately determine whether the dust filter of the inverter device 100 is blocked.
[0028] Therefore, this invention also includes a first temperature detection module 20 at the air inlet of the inverter device 100 to detect the air inlet temperature of the inverter device 100. Because there is a certain relationship between the temperature of the IGBT module 10 and the air inlet temperature under normal operating conditions of the inverter device 100, detecting the temperature of the IGBT module 10 and the air inlet allows for monitoring of the dust filter's blockage status. Therefore, the controller 40 can output an indication signal based on the first and second temperature detection signals, which includes information about whether the dust filter in the inverter device 100 is blocked.
[0029] Specifically, the temperature rise of the IGBT module 10 may be caused by the following two main reasons: 1. The operating condition or malfunction of the IGBT module 10 itself. When the IGBT module 10 experiences excessively high switching frequency, increased on-resistance, or internal package faults, power loss increases, leading to a temperature rise. 2. Temperature rise due to poor heat dissipation. When the dust filter is blocked, the heat from the IGBT module 10 cannot be effectively dissipated, resulting in an abnormal temperature rise. Therefore, simply setting the second temperature detection module 30 to detect the temperature of the IGBT module 10 is insufficient to effectively identify whether the temperature rise of the IGBT module 10 is caused by a heat dissipation problem in the inverter device 100 due to a blocked dust filter.
[0030] To effectively distinguish between the two situations mentioned above, this embodiment of the invention also includes a first temperature detection module 20 at the air inlet of the inverter device 100 to detect the air inlet temperature of the inverter device 100. The air inlet temperature of the inverter device 100 is generally considered a representative of the ambient temperature, as it reflects the temperature of the outside cold air before it enters the heat dissipation system. The air inlet temperature serves as a benchmark value for judging the temperature change of the IGBT module 10. Under normal heat dissipation conditions, the temperature difference between the IGBT module 10 temperature and the air inlet temperature is usually maintained within a relatively stable range (e.g., 10°C to 20°C). If the air inlet temperature detected by the first temperature detection module 20 is normal, but the temperature of the IGBT module 10 detected by the second temperature detection module 30 rises significantly, it means that the heat of the IGBT module 10 has not been effectively dissipated, which may be caused by blockage of the heat dissipation system, i.e., the dust filter, rather than an abnormal heating of the IGBT module 10 itself. In this embodiment of the invention, a dust filter blockage is defined as a temperature difference between the IGBT module 10 temperature and the air inlet temperature exceeding 20°C.
[0031] However, when the temperature of the IGBT module 10 detected by the second temperature detection module 30 increases, if the temperature of the air inlet detected by the first temperature detection module 20 also increases significantly (e.g., from 25°C to 40°C), and the temperature difference between the IGBT module 10 and the air inlet is still within the normal range, it can be concluded that the increase is due to the working state or fault of the IGBT module 10 itself, or the overall increase in ambient temperature, rather than the problem of insufficient heat dissipation caused by the blockage of the dust filter of the inverter device 100.
[0032] Therefore, in this utility model, by detecting the temperature of the IGBT module 10 through the second temperature detection module 30 and detecting the air inlet temperature of the inverter device 100 through the first temperature detection module 20, the effect of detecting whether the dust filter in the inverter device 100 is blocked can be achieved.
[0033] Furthermore, regarding the composition of the first temperature detection module 20 and the second temperature detection module 30, in one possible implementation, the first temperature detection module 20 includes a first temperature sensor, and the second temperature detection module 30 includes a second temperature sensor. Specifically, in this invention, the first temperature detection module 20 can be composed of a first temperature sensor and external circuitry, and the second temperature detection module 30 can be composed of a second temperature sensor and external circuitry.
[0034] Furthermore, regarding the signal transmission method between the first temperature detection module 20 and the controller 40, in one possible implementation, the first temperature detection module 20 and the controller 40 are electrically connected, or wirelessly connected. Thus, in this embodiment of the invention, the first temperature detection module 20 and the controller 40 can be electrically connected, with the first temperature detection module 20 transmitting a first temperature detection signal to the controller 40 via this electrical connection. Alternatively, the first temperature detection module 20 and the controller 40 can be wirelessly connected, with the first temperature detection module 20 transmitting a second temperature detection signal to the controller 40 via this wireless connection.
[0035] Furthermore, regarding the signal transmission method between the second temperature detection module 30 and the controller 40, in one possible implementation, the second temperature detection module 30 and the controller 40 are electrically connected, or wirelessly connected. Thus, in this embodiment of the invention, the second temperature detection module 30 and the controller 40 can be electrically connected, with the second temperature detection module 30 transmitting the second temperature detection signal to the controller 40 via this electrical connection. Alternatively, the second temperature detection module 30 and the controller 40 can be wirelessly connected, with the second temperature detection module 30 wirelessly transmitting the second temperature detection signal to the controller 40.
[0036] Furthermore, such as Figure 3 As shown, in one possible implementation, the inverter device 100 further includes an indicator module 50, which is electrically connected to the controller 40. The indicator module 50 is used to receive indicator signals output by the controller 40. Although the inverter device 100 can output indicator signals with dust filter blockage information through the controller 40, it is still necessary to notify the user. Therefore, the inverter device 100 in this invention is provided with an indicator module 50, which can receive indicator signals output by the controller 40 to issue instructions to the user.
[0037] Optionally, the indicator module 50 includes a buzzer and / or an LED light. Specifically, the indicator module 50 may include a buzzer, for example, when the indicator signal includes information about a clogged dust filter, the buzzer sounds an alarm to indicate to the user that the dust filter is clogged; when the indicator signal includes information about an unclogged dust filter, the buzzer does not sound an alarm. The indicator module 50 may also include an LED light, for example, when the indicator signal includes information about a clogged dust filter, the LED light illuminates red to indicate to the user that the dust filter is clogged; when the indicator signal includes information about an unclogged dust filter, the LED light illuminates green to indicate to the user that the dust filter is unclogged. Of course, the indicator module 50 may also include both a buzzer and / or an LED light to indicate the user's status as to the dust filter.
[0038] Furthermore, such as Figure 3 As shown, the inverter device 100 also includes a display module 60, which is electrically connected to the controller 40. The display module 60 is used to receive indication signals. The display module 60 may include a display screen, which can be installed on the surface of the electronic device 1000 or independently on the outside of the electronic device 1000. The display module 60 can receive indication signals and display the clogging status of the dust filter on the display screen, allowing the user to more intuitively understand the clogging status of the dust filter. Of course, the display module 60 and the indication module 50 can also be installed simultaneously in the inverter device 100 to work together.
[0039] Furthermore, such as Figure 2 and Figure 4 As shown, the controller 40 comprises: a signal receiving unit 41, a signal conversion unit 42, and a main control unit 43. The signal receiving unit 41 is electrically connected to the first temperature detection module 20 and the second temperature detection module 30, respectively. The signal receiving unit 41 is used to receive the first temperature detection signal and the first temperature detection signal, and is also used to output the first temperature detection signal and the first temperature detection signal.
[0040] Signal conversion unit 42 is electrically connected to signal receiving unit 41 and is used to convert the first temperature detection signal and the second temperature detection signal into a first temperature value and a second temperature value. Signal conversion unit 42 is also used to output the first temperature value and the second temperature value. That is, signal conversion unit 42 is used to convert the electrical signals of the first and second temperature detection signals into digital signals of the first and second temperature values, and output the first and second temperature values. Main control unit 43 is electrically connected to signal conversion unit 42 and is used to receive the first and second temperature values. Main control unit 43 is also used to output an indication signal. Specifically, main control unit 43 can output an indication signal including information on whether the dust filter is blocked based on the interpolation of the second temperature value and the first temperature value.
[0041] Therefore, through the cooperation of the various units in the controller 40, the controller can receive the temperature detection signals output by the first temperature detection module 20 and the second temperature detection module 30, and output an indication signal according to the output temperature detection signal.
[0042] In the description of this specification, the references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] Furthermore, the above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An inverter device, characterized in that, The inverter device includes: IGBT module; The first temperature detection module is installed at the air inlet of the inverter device to detect the temperature of the air inlet of the inverter device and output a first temperature detection signal. The second temperature detection module is installed inside the IGBT module and is used to detect the temperature of the IGBT module and output a second temperature detection signal. The controller is electrically connected to the IGBT module. The controller is used to receive the first temperature detection signal and the second temperature detection signal, and output an indication signal according to the first temperature detection signal and the second temperature detection signal.
2. The inverter device according to claim 1, characterized in that, The first temperature detection module is electrically connected to the controller, or the first temperature detection module is wirelessly connected to the controller.
3. The inverter device according to claim 1, characterized in that, The second temperature detection module is electrically connected to the controller, or the second temperature detection module is wirelessly connected to the controller.
4. The inverter device according to claim 1, characterized in that, The inverter device further includes an indicator module, which is electrically connected to the controller and is used to receive the indicator signal.
5. The inverter device according to claim 1, characterized in that, The inverter device further includes a display module, which is electrically connected to the controller and is used to receive the indication signal.
6. The inverter device according to claim 4, characterized in that, The indicator module includes: a buzzer and / or an LED light.
7. The inverter device according to claim 1, characterized in that, The controller includes: A signal receiving unit is configured to receive the first temperature detection signal and the second temperature detection signal, and the signal receiving unit is also configured to output the first temperature detection signal and the second temperature detection signal. A signal conversion unit, electrically connected to the signal receiving unit, is used to convert the first temperature detection signal and the second temperature detection signal into a first temperature value and a second temperature value. The signal conversion unit is also used to output the first temperature value and the second temperature value. The main control unit is electrically connected to the signal conversion unit and is used to receive the first temperature value and the second temperature value. The main control unit is also used to output an indication signal.
8. The inverter device according to claim 1, characterized in that, The first temperature detection module includes a first temperature sensor, and the second temperature detection module includes a second temperature sensor.
9. An electronic device, characterized in that, The electronic device includes an inverter device as described in any one of claims 1 to 8.