Anti-interference temperature detection module and bidirectional inverter

Abstract

The utility model relates to an anti-interference temperature detection module. The anti-interference temperature detection module comprises a plurality of temperature sensors, at least one insulating heat conduction piece and a control panel, the temperature sensor is arranged on the heat dissipation module and used for detecting the temperature of the heat dissipation module, and the insulating heat conduction piece is arranged between the temperature sensor and the heat dissipation module; the control panel is electrically connected with the plurality of temperature sensors and receives temperature signals transmitted by the temperature sensors. The anti-interference temperature detection module provided by the utility model effectively improves the anti-interference performance of temperature detection by introducing the insulating heat conduction member, ensures that the temperature sensors do not interfere with each other, and can accurately sense the temperature of the heat dissipation module. The utility model further comprises a bidirectional inverter with the temperature detection module, and the temperature detection, regulation and control of a plurality of heat dissipation units can be realized.

Description

Technical field

[0001] The utility model relates to the field of electronic equipment, and in particular to an anti-interference temperature detection module and a bidirectional inverter. [Background Technology]

[0002] Bidirectional inverters are widely used in power systems. During operation, active components generate heat whenever current flows through them. The main heat-generating components in the inverter include switching transistors (IGBTs, MOSFETs) and magnetic core components (inductors, transformers). Therefore, to ensure that components can operate at rated temperatures, the system's heat dissipation capacity is crucial. Inadequate heat dissipation can seriously impact the equipment's operating efficiency and lifespan. Therefore, the inverter incorporates multiple heat dissipation modules that contact the active components. These modules reduce temperature by increasing the contact area with the air in the flow channel. To monitor the heat dissipation effectiveness in real time, the surface temperature of the heat dissipation modules must be monitored.

[0003] In existing technology, bidirectional inverters use temperature sensors mounted directly on heat sink modules to detect temperature. However, due to the contact between the heat sink module and active components, interference signals may be present on the surface, resulting in inaccurate temperature monitoring and the risk of equipment overheating, shutdown, or damage. Therefore, there is an urgent need for a temperature detection module that can accurately detect temperature and has anti-interference capabilities to improve the operational safety and service life of bidirectional inverters. [Utility Model Content]

[0004] The utility model aims to provide an anti-interference temperature detection module to solve the problem of low detection accuracy and realize accurate monitoring of problems of the heat dissipation module.

[0005] The utility model provides an anti-interference temperature detection module, which is used for a bidirectional inverter to detect the temperature of multiple heat dissipation modules, including multiple temperature sensors, at least one insulating heat-conducting member and a control board; the temperature sensor is arranged on the heat dissipation module to detect the temperature of the heat dissipation module, and the insulating heat-conducting member is arranged between the temperature sensor and the heat dissipation module; the control board is electrically connected to the multiple temperature sensors to receive the temperature signals transmitted by the temperature sensors.

[0006] The present utility model also provides a bidirectional inverter, including a main circuit structure, multiple heat dissipation modules and an anti-interference temperature detection module; the main circuit structure is provided with multiple control switches, and multiple heat dissipation modules are arranged at intervals on the main circuit structure and correspondingly fit the control switches. The control board is arranged on the main circuit structure, and the temperature sensor and the insulating heat conductive member are arranged relative to the heat dissipation module; wherein, the anti-interference temperature detection module includes multiple temperature sensors, at least one insulating heat conductive member and a control board; the temperature sensor is arranged on the heat dissipation module for detecting the temperature of the heat dissipation module, and the insulating heat conductive member is arranged between the temperature sensor and the heat dissipation module; the control board is electrically connected to multiple temperature sensors to receive temperature signals transmitted by the temperature sensors.

[0007] Compared with the prior art, the anti-interference temperature detection module provided by the present invention effectively improves the anti-interference performance of temperature detection by introducing the insulating heat conductive part, ensuring that the temperature sensors do not interfere with each other and can accurately sense the temperature of the heat dissipation module. The insulating heat conductive part not only has excellent thermal conductivity, but also can isolate interference, significantly improving the reliability of temperature monitoring. The bidirectional inverter using the anti-interference temperature detection module can isolate the mutual interference between the temperature sensors through the insulating heat conductive part, effectively monitor the temperature of the heat dissipation module, and accurately grasp the heat dissipation situation inside the bidirectional inverter, and timely adjust the heat dissipation power or issue a warning to the user according to the specific situation, making the use of the bidirectional inverter safer and more reliable, and extending the service life of the bidirectional inverter.

Brief Description of the Drawings

[0008] Figure 1 A schematic diagram of the three-dimensional structure of a bidirectional inverter provided by the utility model;

[0009] Figure 2 A three-dimensional exploded view of the bidirectional inverter provided by the utility model; and

[0010] Figure 3 This is a schematic diagram of the circuit connection of an anti-interference temperature detection module provided by the utility model. [Specific implementation method]

[0011] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0012] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of an anti-interference temperature detection module of the utility model. Figure 2 This is a three-dimensional exploded view of the bidirectional inverter provided by the present invention. The bidirectional inverter 100 includes a main circuit structure 1, multiple heat dissipation modules 3 and the anti-interference temperature detection module 5. The main circuit structure 1 is a relatively common setting method in the prior art, including DC and AC input and output terminals, as well as a built-in step-up / step-down module, DC / AC conversion module, AC / DC conversion module and a circuit board structure for displaying the above modules. Among them, a module controlled by a bridge circuit is provided with multiple control switches 11 for realizing the functions inside the module. The control switch is mainly a switch tube, such as IGBT, MOSfet, etc., which is not limited here.

[0013] The heat dissipation module 3 is spaced apart from the main circuit structure 1 and is positioned in contact with the control switch 11 to effectively dissipate heat and prevent the control switch 11 from generating excessive heat due to current conversion during operation. The heat dissipation module 3 primarily utilizes a heat-conducting structure with multiple layers of heat dissipation fins 31. The control switch 11 is secured to the heat dissipation module 3 via screws or bolts, with the two abutting and contacting each other. Heat generated during operation by the control switch 11 is transferred to the heat dissipation module 3, achieving heat transfer. The heat dissipation fins 31 of the heat dissipation module 3 are in full contact with the air, dissipating heat from the control switch 11.

[0014] The anti-interference temperature detection module 5 is used in the bidirectional inverter 100 to detect the temperature of the multiple heat dissipation modules 3. It includes multiple temperature sensors 51, at least one insulating heat conductive member 53, and a control board 55. The temperature sensors 51 are mounted on the heat dissipation modules 3 to detect the temperature. The insulating heat conductive member 53 is disposed between the temperature sensors 51 and the heat dissipation modules 3 to improve temperature conduction and isolate interference.

[0015] In this embodiment, the heat dissipation module 3 includes a first heat dissipation unit 301 and a second heat dissipation unit 303. The temperature sensor 51 includes a first sensor 501 and a second sensor 503. The first sensor 501 is disposed on the first heat dissipation unit 301, and the second sensor 503 is disposed on the second heat dissipation unit 303 via the insulating heat conductive member 53. Three heat dissipation modules 3 are provided, corresponding to the control switches 11. Two of the heat dissipation modules 3 correspond to the first heat dissipation units 301, on which the first sensors 501 are directly disposed. Another heat dissipation module 3 corresponds to the second heat dissipation unit 303, on which the insulating heat conductive member 53 is disposed. The insulating heat conductive member 53 is disposed between the second heat dissipation unit 303 and the heat dissipation module 3.

[0016] It should be noted here that the number of the insulating heat conductive parts 53 is at least one, that is, the other heat dissipation modules 3 can also be connected to the temperature sensor 51 through the insulating heat conductive parts 53, that is, the corresponding first heat dissipation unit 301 can be set up in the same manner as the second heat dissipation unit 303 and the second sensor 503, and no further restrictions are made here.

[0017] The control board 55 is electrically connected to the temperature sensor 51. The control board 55 in the anti-interference temperature detection module 5 is disposed within the main circuit structure 1 and is configured to receive signals from the multiple temperature sensors 51, process, and analyze them, thereby enabling real-time monitoring and management of the temperature of the heat dissipation module 3. The temperature sensor 51 and the insulating heat conductive member 53 are disposed relative to the heat dissipation module 3 to accurately detect the temperature of the heat dissipation module 3 and effectively transmit the temperature signal through the insulating heat conductive member 53 to reduce the effects of interference.

[0018] Because the insulating heat conductor 53 separates the temperature sensor 51 from the heat dissipation module 3, the temperature sensor 51 is only used to sense the surface temperature of the heat dissipation module 3 and does not receive other interference signals transmitted by the heat dissipation module 3. The control board 55 processes the temperature signal transmitted by the temperature sensor 51 after receiving it, and the signals returned by each temperature sensor 51 do not interfere with each other, ensuring the accuracy of temperature detection. When the temperature is too high, the protection mechanism of the bidirectional inverter 100 is triggered, such as increasing the operating efficiency of the cooling fan (not shown) in the bidirectional inverter 100 or issuing an overtemperature warning to prevent equipment damage or performance degradation due to overheating.

[0019] It should be noted that the insulating thermal conductive member 53 can also be made of different materials, such as ceramic, graphene, or other high-performance insulating thermal conductive materials, to improve heat conduction efficiency and durability. In this embodiment, the insulating thermal conductive member 53 is preferably made of ceramic, which has good thermal conductivity, high plasticity, and low cost. To facilitate installation and ensure stability, a accommodating cavity 531 is provided within the insulating thermal conductive member 53. The temperature sensor 51 is accommodated in the accommodating cavity 531 and is in full contact with the insulating thermal conductive member 53.

[0020] In addition, the shape of the insulating heat-conducting member 53 can be designed to be more complex to accommodate heat dissipation modules of different shapes and sizes, ensuring good thermal contact under various conditions. In this embodiment, the insulating heat-conducting member 53 is configured as a cubic structure, and the accommodating cavity 531 is configured as a cavity structure corresponding to the structure of the temperature sensor 51, facilitating the assembly and disassembly of the temperature sensor 51. Of course, in other embodiments, a layer of thermally conductive paste or a thermally conductive gasket can be applied to the inner wall of the accommodating cavity 531 to enhance heat transfer between the temperature sensor 51 and the inner wall of the accommodating cavity 531 while also securing the temperature sensor 51.

[0021] The anti-interference temperature detection module 5 also includes a fixing unit 57, through which the insulating heat-conducting member 53 is connected to the heat dissipation module 3. The fixing unit 57 includes a connecting member 571 and a flexible stopper 573. The connecting member 571 is a structural member such as a bolt or screw for connection and fixing, and cooperates with the heat dissipation module 3 to fix the temperature sensor 51. The fixing unit 57 fixes the temperature sensor 51 and the insulating heat-conducting member 53 through the connecting member or in cooperation with the flexible stopper 573, ensuring that the temperature sensor 51 and the heat dissipation module 3 are tightly fitted and positioned stably, thereby improving the accuracy of temperature conduction and the stability of the device. On the heat dissipation module 3 where the insulating heat-conducting member 53 is set, both ends of the flexible stopper 573 are connected to the heat dissipation module 3, and the insulating heat-conducting member 53 and the temperature sensor 51 are sandwiched between the flexible stopper 573 and the heat dissipation module 3.

[0022] In this embodiment, the flexible stopper 573 is configured in an arched structure to ensure that the flexible stopper 573 is fully fitted with the insulating heat conductive member 53 and the heat dissipation module 3, thereby enhancing the stability of the insulating heat conductive member 53. Threaded holes are provided in the heat dissipation module 3, and the ends of the flexible stopper 573 are fixed to the heat dissipation module 3 via the connectors 571.

[0023] Please refer to Figure 3The temperature sensor 51 can be a different type of sensor, such as a thermistor, infrared sensor, etc., to accommodate different temperature measurement ranges and accuracy requirements. In this embodiment, the temperature sensor 51 is a thermistor R1. The control board 55 is provided with a voltage divider resistor R2 and a control chip 553. The thermistor R1 is connected to the voltage divider resistor R2, and the connection between the thermistor R1 and the voltage divider resistor R2 is connected to the control chip 553. One end of the thermistor R1 is connected to a DC voltage VCC, and one end of the voltage divider resistor R2 is grounded. Due to the characteristic that the resistance of the thermistor R1 changes with temperature, the control chip 553 can detect the voltage at the connection between the voltage divider resistor R2 and the thermistor R1, thereby identifying the corresponding surface temperature of the heat dissipation module 3. Furthermore, the output end of the control chip 553 can be connected to a cooling fan, so as to directly control the working efficiency of the cooling fan, thereby controlling the temperature inside the bidirectional inverter 100; of course, the control chip 553 can also be connected to an alarm device, so that when the temperature inside the heat dissipation module 3 exceeds a predetermined warning temperature, the alarm device is controlled to sound an alarm to remind the user to use it safely.

[0024] In other embodiments, the control board 55 may also integrate other functional modules, such as a communication module, a storage module, etc., to achieve remote monitoring and data recording functions. In other embodiments, the anti-interference temperature detection module 5 may be designed as a waterproof and dustproof structure to adapt to application requirements in outdoor or harsh environments.

[0025] In this embodiment, the surface of the insulating heat-conducting member 53 is further provided with an anti-static coating to prevent static electricity accumulation and enhance anti-interference capability.

[0026] Compared with the prior art, the anti-interference temperature detection module 5 provided by the present invention effectively improves the anti-interference performance of temperature detection by introducing the insulating heat conductive member 53, ensuring that the temperature sensors 51 do not interfere with each other and can accurately sense the temperature of the heat dissipation module 3. The insulating heat conductive member 53 not only has excellent thermal conductivity, but also can isolate interference, significantly improving the reliability of temperature monitoring. The bidirectional inverter 100 using the anti-interference temperature detection module 5 isolates the mutual interference between the temperature sensors 51 through the insulating heat conductive member 53, effectively monitors the temperature of the heat dissipation module 3, thereby accurately grasping the heat dissipation situation inside the bidirectional inverter 100, and timely adjusts the heat dissipation power or issues a warning to the user according to the specific situation, making the use of the bidirectional inverter 100 safer and more reliable, and extending the service life of the bidirectional inverter 100.

[0027] The above is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the scope of protection of the present invention.

Claims

1. An anti-interference temperature detection module, used for a bidirectional inverter, to detect the temperature of multiple heat dissipation modules, characterized in that: include: A plurality of temperature sensors are respectively provided on the heat dissipation modules and are used to detect the temperature of the heat dissipation modules; At least one insulating heat-conducting member, the insulating heat-conducting member being disposed between the temperature sensor and the heat dissipation module and being in contact with each other; and A control board is provided, wherein the plurality of temperature sensors are electrically connected to the control board and receives temperature signals transmitted by the temperature sensors.

2. The anti-interference temperature detection module according to claim 1, characterized in that: The insulating heat-conducting component is provided with a receiving cavity, and the temperature sensor is received in the receiving cavity and is in full contact with the insulating heat-conducting component.

3. The anti-interference temperature detection module according to claim 2, characterized in that: It also includes a fixing unit, which is connected to the heat dissipation module and is used to fix the temperature sensor and the insulating heat-conducting member.

4. The anti-interference temperature detection module according to claim 3, characterized in that: The fixing unit includes a connecting piece, which is a bolt or a screw, and cooperates with the heat dissipation module to fix the temperature sensor.

5. The anti-interference temperature detection module according to claim 3, characterized in that: The fixing unit includes a flexible stopper, both ends of which are connected to the heat dissipation module, and the insulating heat-conducting member and the temperature sensor are sandwiched between the flexible stopper and the heat dissipation module.

6. The anti-interference temperature detection module according to claim 5, characterized in that: The flexible stopper is an arched structure and is fully fitted with the insulating heat-conducting component and the heat dissipation module.

7. The anti-interference temperature detection module according to claim 1, characterized in that: The temperature sensor is a thermistor, the control board is provided with a voltage divider resistor and a control chip, the thermistor is connected to the voltage divider resistor, and the connection between the thermistor and the voltage divider resistor is connected to the control chip.

8. The anti-interference temperature detection module according to claim 1, characterized in that: The surface of the insulating heat-conducting component is provided with an antistatic coating.

9. A bidirectional inverter, characterized in that: include: A main circuit structure, wherein the main circuit structure is provided with a plurality of control switches; A plurality of heat dissipation modules, wherein the plurality of heat dissipation modules are spaced apart from each other on the main circuit structure and correspondingly attached to the control switch; and According to the anti-interference temperature detection module according to any one of claims 1 to 8, the control board is arranged in the main circuit structure, and the temperature sensor and the insulating heat conductive member are arranged relative to the heat dissipation module.

10. The bidirectional inverter according to claim 9, characterized in that: The heat dissipation module includes a first heat dissipation unit and a second heat dissipation unit. The temperature sensor includes a first sensor and a second sensor. The first sensor is arranged on the first heat dissipation unit, and the second sensor is arranged on the second heat dissipation unit through the insulating heat conductive member.

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