A test system for a water-cooled plate

Abstract

This utility model relates to a water-cooled testing device, disclosing a testing system for a water-cooled plate used in passive thermal cycling testing of IGBT devices. The system includes a water-cooled plate with a heating unit and a cooling unit. The key feature is the inclusion of a main control unit. The heating unit heats the water and sends signals to the main control unit, while the cooling unit cools the water and sends signals to the main control unit. The main control unit processes the received signals and feeds back control signals to the cooling and heating units. This utility model's testing system can simultaneously evaluate the heating and cooling performance of the water-cooled plate in a single test, improving testing efficiency. Through independent dual over-temperature detection technology, it achieves safety protection and rapid over-temperature cutoff for the testing platform, thereby improving testing accuracy and safety and shortening the testing cycle.

Description

Technical Field

[0001] This utility model relates to a water-cooled testing device, and more particularly to a testing system for water-cooled plates. Background Technology

[0002] In the field of power electronics, IGBT (Insulated Gate Bipolar Transistor) devices are widely used in various converters, such as electric vehicles, industrial automation equipment, and renewable energy systems. IGBT devices generate heat during operation, requiring effective heat dissipation measures to ensure their performance and reliability.

[0003] Traditional air cooling methods have limited heat dissipation efficiency and cannot meet the heat dissipation requirements of high-power-density IGBT devices. Therefore, water cooling technology has emerged. Water cooling removes heat through circulating coolant, resulting in higher heat dissipation efficiency.

[0004] However, when conducting thermal cycling tests on IGBT devices, existing passive water-cooling test devices rely heavily on a single temperature control element for safety protection. The over-temperature cutoff mechanism has a slow response speed and can only protect the entire system, failing to achieve zoned control and rapid response. Once a fault occurs, it may lead to serious safety accidents. Summary of the Invention

[0005] This invention addresses the problem that existing passive water-cooling testing devices rely heavily on a single temperature control element for safety protection, have slow over-temperature cut-off mechanisms, and can only protect the entire system without providing zoned control and rapid response. Furthermore, these devices may lead to serious safety accidents if a malfunction occurs. This invention provides a testing system for water-cooled plates.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0007] A testing system for a water-cooled plate includes a water-cooled plate, on which a heating unit and a cooling unit are provided, and a main control unit is also provided. The heating unit is used for heating and sends a signal to the main control unit, the cooling unit is used for cooling and sends a signal to the main control unit, and the main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

[0008] The efficiency of testing can be improved by controlling heating and cooling simultaneously.

[0009] Preferably, the heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module; the main control module acquires the temperature of the heating module and transmits it to the PID temperature control module, the PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module; the solid-state relay is used to control the heating of the heating module.

[0010] The PID temperature control module precisely regulates the heating and cooling processes; the control system controls the heating power of the heating rod by controlling the on and off time ratio of the solid-state relay, thereby controlling the temperature.

[0011] Preferably, the heating unit also includes an over-temperature detection module, which is used to detect the temperature of the heating module and is connected to a solid-state relay via a relay; the solid-state relay controls the heating of the heating module.

[0012] Preferably, the heating module includes an array of heating rods, with each array of heating rods corresponding to a solid-state relay.

[0013] Preferably, a water leakage detection unit is also included, which is used to detect the water-cooled plate and send the detected signal to the main control unit.

[0014] Preferably, the system also includes a solenoid valve control unit, which is used to control the on / off state of the water cooling plate and send control signals to the main control unit.

[0015] Preferably, an alarm display unit is also included, in which the main control unit sends an alarm signal to the alarm display unit, and the alarm display unit displays the alarm through alarm lights of different colors.

[0016] This utility model, by adopting the above technical solution, has significant technical effects:

[0017] The testing system designed in this invention can simultaneously evaluate the heating and cooling performance of a water-cooled plate in a single test, thus improving testing efficiency. Through independent dual over-temperature detection technology, it achieves safety protection and rapid over-temperature cutoff for the testing platform, thereby improving testing accuracy and safety, and shortening the testing cycle.

[0018] This utility model's PID temperature control module precisely regulates the heating and cooling processes; the control system controls the heating power of the heating rod by controlling the on and off time ratio of the solid-state relay, thereby achieving temperature control.

[0019] This invention features two independent over-temperature detection devices at each location. Once the detected temperature exceeds a set threshold, an over-temperature protection mechanism is immediately triggered. After over-temperature protection is activated, the system quickly cuts off the heating power supply via an independent solid-state relay, ensuring that heating ceases. The over-temperature detection device has a response time of less than 0.3 seconds and a cut-off time of less than 1 second, effectively preventing sample damage due to overheating. Attached Figure Description

[0020] Figure 1 This is a system schematic diagram of this utility model.

[0021] Figure 2 This is the electrical control diagram of the testing system of this utility model.

[0022] Figure 3 This is the electrical control diagram of the alarm display unit of this utility model. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Example 1

[0025] A testing system for water-cooled plates. Figure 1 The system includes a water-cooled plate, on which a heating unit and a cooling unit are provided, and also includes a main control unit. The heating unit is used for heating and sends signals to the main control unit, and the cooling unit is used for cooling and sends signals to the main control unit. The main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

[0026] The heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module. The main control module acquires the temperature of the heating module and transmits it to the PID temperature control module. The PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module. The solid-state relay is used to control the heating of the heating module.

[0027] Example 2

[0028] A testing system for a water-cooled plate includes a water-cooled plate, on which a heating unit and a cooling unit are provided, and a main control unit is also provided. The heating unit is used for heating and sends a signal to the main control unit, the cooling unit is used for cooling and sends a signal to the main control unit, and the main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

[0029] The heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module. The main control module acquires the temperature of the heating module and transmits it to the PID temperature control module. The PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module. The solid-state relay is used to control the heating of the heating module.

[0030] The heating unit also includes an over-temperature detection module, which is used to detect the temperature of the heating module and is connected to a solid-state relay via a relay; the solid-state relay controls the heating of the heating module.

[0031] The heating module includes an array of heating rods, with each group of heating rods corresponding to a solid-state relay. The solid-state relays are contact relays; when the relay is in the open state, the heating rod stops heating; otherwise, the heating rod continues heating.

[0032] Example 3

[0033] A testing system for a water-cooled plate includes a water-cooled plate, on which a heating unit and a cooling unit are provided, and a main control unit is also provided. The heating unit is used for heating and sends a signal to the main control unit, the cooling unit is used for cooling and sends a signal to the main control unit, and the main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

[0034] The heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module. The main control module acquires the temperature of the heating module and transmits it to the PID temperature control module. The PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module. The solid-state relay is used to control the heating of the heating module.

[0035] The heating unit also includes an over-temperature detection module, which detects the temperature of the heating module and is connected to a solid-state relay via a relay. The solid-state relay controls the heating of the heating module. With two over-temperature detection modules, the system can safely cut off the heating source even if a single component fails, significantly improving reliability. The over-temperature detection device has a response time of less than 0.3 seconds and a cut-off time of less than 1 second, effectively preventing sample damage due to overheating.

[0036] The heating module includes an array of heating rods, with each group of heating rods corresponding to a solid-state relay.

[0037] It also includes a water leakage detection unit, which is used to detect the water-cooled plate and send the detected signal to the main control unit.

[0038] It also includes a solenoid valve control unit, which is used to control the on / off state of the water cooling plate and send control signals to the main control unit.

[0039] Example 4

[0040] A testing system for a water-cooled plate includes a water-cooled plate, on which a heating unit and a cooling unit are provided, and a main control unit is also provided. The heating unit is used for heating and sends a signal to the main control unit, the cooling unit is used for cooling and sends a signal to the main control unit, and the main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

[0041] The heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module. The main control module acquires the temperature of the heating module and transmits it to the PID temperature control module. The PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module. The solid-state relay is used to control the heating of the heating module.

[0042] The heating unit also includes an over-temperature detection module, which is used to detect the temperature of the heating module and is connected to a solid-state relay via a relay; the solid-state relay controls the heating of the heating module.

[0043] The heating module includes an array of heating rods, with each group of heating rods corresponding to a solid-state relay.

[0044] It also includes a water leakage detection unit, which is used to detect the water-cooled plate and send the detected signal to the main control unit.

[0045] It also includes a solenoid valve control unit, which is used to control the on / off state of the water cooling plate and send control signals to the main control unit.

[0046] It also includes an alarm display unit. The main control unit sends an alarm signal to the alarm display unit, which displays the alarm through alarm lights of different colors.

[0047] Figure 3 In the alarm display unit, there are green LED strip buttons, red LED strip buttons, and an emergency stop button. The green LED strip button is used to control the alarm display unit to display in green, and the red LED strip button is used to control the alarm display to display in red.

Claims

1. A test system for a water-cooled panel, comprising a water-cooled panel on which a heating unit and a cooling unit are provided, characterized in that, It also includes a main control unit; the heating unit is used to heat and send signals to the main control unit, the cooling unit is used to cool and send signals to the main control unit, the main control unit processes the received signals and feeds back control signals to the cooling unit and the heating unit.

2. The testing system for a water cooling panel according to claim 1, wherein, The heating unit includes a heating module, a solid-state relay, a PID temperature control module, and an isolation control module. The main control module acquires the temperature of the heating module and transmits it to the PID temperature control module. The PID temperature control module sends a temperature control signal to the solid-state relay via the isolation control module. The solid-state relay is used to control the heating of the heating module.

3. The testing system for a water cooling panel according to claim 2, wherein, The heating unit also includes an over-temperature detection module, which is used to detect the temperature of the heating module and is connected to a solid-state relay via a relay; the solid-state relay controls the heating of the heating module.

4. The testing system for a water cooling panel according to claim 2, wherein, The heating module includes an array of heating rods, with each group of heating rods corresponding to a solid-state relay.

5. The testing system for a water cooling panel according to claim 1, wherein, It also includes a water leakage detection unit, which is used to detect the water-cooled plate and send the detected signal to the main control unit.

6. The testing system for a water cooling panel according to claim 1, wherein, It also includes a solenoid valve control unit, which is used to control the on / off state of the water cooling plate and send control signals to the main control unit.

7. The testing system for a water cooling panel according to claim 1, wherein, It also includes an alarm display unit. The main control unit sends an alarm signal to the alarm display unit, which displays the alarm through alarm lights of different colors.

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