Automobile electronic cold and hot cycle test device

Abstract

The utility model belongs to the field of automobile electronic testing technology, concretely is a kind of automobile electronic cold and hot cycle testing device, including test box, still include: energy recovery tank, energy recovery tank is connected with test box by connecting pipe one, fan, set in test box top, the air outlet end of fan is connected with the interface of four-way joint one, and two interfaces of four-way joint one are connected with refrigeration unit and heating unit respectively by gas supply pipe one, air outlet nozzle, set in test box, air outlet nozzle is connected with the interface of three-way joint two by gas outlet pipe, and another two interfaces of three-way joint two are connected with refrigeration unit and heating unit respectively by gas supply pipe two The utility model stores waste cold / waste heat, feeds back to test box to speed up temperature regulation when mode conversion, realizes energy recovery and reuse, and fan is connected with refrigeration unit and heating unit respectively by pipeline, forms double air flow path, flexibly switches or simultaneously uses, improves circulation efficiency and temperature regulation flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of automotive electronics testing technology, and in particular relates to an automotive electronics thermal cycling testing device. Background Technology

[0002] As the core components of automotive intelligence, automotive electronic components need to maintain normal function and parameter drift within the allowable range under extreme temperature environments. Thermal cycling testing is a key link in their research and development and quality inspection.

[0003] Currently, existing traditional testing equipment typically adopts a single mode of "cooling + heating + DC ventilation". After completing a high-temperature test, a large amount of heat energy will accumulate in the test chamber and the air inside. When it is necessary to switch to a low-temperature test, the heat energy must be consumed by the cooling system before entering the low-temperature stage, which greatly increases the load and energy consumption of the cooling system. Conversely, when switching from the low-temperature stage to the high-temperature stage, the heating system needs to consume more energy to raise the temperature, which not only wastes energy but also increases the testing costs for enterprises.

[0004] To address the aforementioned issues, this application proposes an automotive electronic thermal cycling test device. Utility Model Content

[0005] The purpose of this invention is to provide an automotive electronic thermal cycling test device, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is an automotive electronic thermal cycling test device, including a test chamber and two energy recovery boxes fixed on the left and right sides of the test chamber. The energy recovery boxes are connected to the test chamber through a connecting pipe.

[0008] A fan is installed above the test chamber. The air outlet of the fan is connected to the interface of the four-way connector one, and the two interfaces of the four-way connector one are respectively connected to the refrigeration unit and the heating unit through the air supply pipe one.

[0009] An air outlet is installed inside the test chamber. The air outlet is connected to the interface of the two-way connector through an air outlet pipe. The other two interfaces of the two-way connector are connected to the cooling unit and the heating unit through the air supply pipe two, respectively.

[0010] Furthermore, one port of the four-way connector is connected to one port of the three-way connector through the connecting pipe three, and the other two ports of the three-way connector are respectively connected to the energy recovery box through the air intake pipe.

[0011] Furthermore, the air inlet of the fan is connected to one interface of the four-way connector two, and the other two interfaces of the four-way connector two are respectively connected to the energy recovery box through the air supply pipe three.

[0012] Furthermore, one interface of the four-way connector is connected to the intake pipe, and the test box is connected to the exhaust pipe.

[0013] Furthermore, the refrigeration unit includes a refrigeration box and an evaporator fixed inside it, and the evaporator is connected to an external compression condensing unit through pipelines.

[0014] Furthermore, the heating unit includes a heating box and a resistance wire heater fixed inside it.

[0015] Furthermore, the energy recovery box is filled with heat storage material.

[0016] Furthermore, electromagnetic valves are installed on the exhaust pipe, air supply pipe one, air intake pipe, air supply pipe two, air supply pipe three, and air intake pipe, and a PLC controller is installed on the outer wall of the test chamber.

[0017] Furthermore, a temperature sensor is fixedly installed on the inner wall of the test chamber, and the temperature sensor is electrically connected to the PLC controller.

[0018] This utility model has the following beneficial effects:

[0019] This utility model has two energy recovery boxes connected to the test chamber, the refrigeration unit, and the heating unit, respectively. The gas discharged from the test chamber (such as high-temperature or low-temperature gas) can enter the energy recovery box to store thermal or cold energy. When switching test modes later, the energy recovery box is fed back to the test chamber to speed up the temperature adjustment inside the test chamber, realize the recovery and reuse of energy, and reduce the waste caused by direct energy emission.

[0020] The air outlet of this utility model is connected to the air supply pipe of the cooling unit and the heating unit via a four-way connector, while the air outlet is connected to the air supply pipe of the cooling unit and the heating unit via a three-way connector, forming two independent airflow delivery paths. The airflow of different paths can be flexibly switched or used simultaneously according to the testing requirements, thereby improving the airflow circulation efficiency and the flexibility of temperature adjustment.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0025] Figure 3 This is a cross-sectional view of the test box of this utility model;

[0026] Figure 4 This is a partial structural schematic diagram of the present invention;

[0027] Figure 5 This is a cross-sectional structural diagram of some components of this utility model;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] In the diagram: 1. Test chamber; 101. Exhaust pipe; 2. Refrigeration unit; 3. Heating unit; 4. Energy recovery box; 401. Connecting pipe one; 5. Fan; 6. Air outlet; 601. Air outlet pipe; 7. PLC controller; 8. Refrigeration box; 9. Evaporator; 10. Heating box; 11. Resistance wire heater; 12. Four-way connector one; 1201. Air supply pipe one; 1202. Connecting pipe two; 13. Three-way connector one; 1301. Air inlet pipe; 14. Three-way connector two; 1401. Air supply pipe two; 15. Four-way connector two; 1501. Air supply pipe three; 1502. Suction pipe; 16. Temperature sensor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Please see Figure 1 - Figure 5As shown, this utility model is an automotive electronic cold and hot cycle testing device, including a test chamber 1, and further including: two energy recovery boxes 4, fixed on the left and right sides of the test chamber 1, the energy recovery boxes 4 being connected to the test chamber 1 through connecting pipe 401; a fan 5, disposed above the test chamber 1, the air outlet of the fan 5 being connected to the interface of a four-way connector 12, and the two interfaces of the four-way connector 12 being connected to a cooling unit 2 and a heating unit 3 respectively through an air supply pipe 1201; an air outlet 6, disposed inside the test chamber 1, the air outlet 6 being connected to the interface of a three-way connector 14 through an air outlet pipe 601, and the other two interfaces of the three-way connector 14 being connected to the cooling unit 2 and the heating unit 3 respectively through an air supply pipe 1401;

[0033] This embodiment provides an automotive electronic thermal cycling test device. A fan 5 is fixed on a support frame at the top of the test chamber 1. The fan 5 drives airflow through the cooling unit 2 / heating unit 3 and into the test chamber 1 through the air outlet 6 to perform low-temperature / high-temperature tests on the automotive electronic components inside the test chamber 1. The airflow inside the test chamber 1 can enter the energy recovery box 4. The two energy recovery boxes 4 exchange heat with the cold / hot air discharged from the test chamber 1 to achieve energy recovery. The energy recovery box 4 can be made of stainless steel.

[0034] One of the four-way connector 12 is connected to one of the three-way connector 13 via the connecting pipe 2 1202, and the other two ports of the three-way connector 13 are connected to the energy recovery box 4 via the air inlet pipe 1301. The air inlet pipe 1301 penetrates the outer wall of the energy recovery box 4. During the alternation of hot and cold, the energy recovered in the energy recovery box 4 is sent into the test box 1 through the air inlet pipe 1301 to make the temperature inside the test box 1 change rapidly.

[0035] The air inlet of the fan 5 is connected to one interface of the four-way connector 2 15, and the other two interfaces of the four-way connector 2 15 are connected to the energy recovery box 4 through the air supply pipe 3 1501. After the fan 5 sends the airflow into the test box 1, the airflow passes through the air supply pipe 3 1501 and the four-way connector 2 15 and is then introduced into the air supply pipe 1 1201 by the fan 5, so as to realize the recycling of hot airflow / cold airflow and reduce energy loss.

[0036] One interface of the four-way connector 2 15 is connected to the intake pipe 1502, and the test box 1 is connected to the exhaust pipe 101. When the test mode is switched, the fan 5 introduces outside air through the intake pipe 1502 via the four-way connector 2 15, and then sends the airflow into the energy recovery box 4 through the four-way connector 1 12, the connecting pipe 2 1202, the three-way connector 1 13 and the intake pipe 1301, and sends the energy stored in the energy recovery box 4 into the test box 1. The airflow is discharged through the exhaust pipe 101.

[0037] The refrigeration unit 2 includes a refrigeration box 8 and an evaporator 9 fixed inside it. The evaporator 9 is connected to an external compressor condenser unit through a pipeline. The refrigeration box 8 is fixed on a support frame at the top of the test box 1.

[0038] The heating unit 3 includes a heating box 10 and a resistance wire heater 11 fixed inside it. The heating box 10 is fixed on a support frame at the top of the test box 1.

[0039] The energy recovery box 4 is filled with heat storage material, which is metal fins or ceramic blocks.

[0040] Among them, solenoid valves are installed on exhaust pipe 101, air supply pipe 1201, air inlet pipe 1301, air supply pipe 2 1401, air supply pipe 3 1501 and suction pipe 1502, and a PLC controller 7 is installed on the outer wall of test box 1 to control the airflow direction through the opening and closing of the solenoid valves.

[0041] The inner wall of the test chamber 1 is equipped with a temperature sensor 16, which is electrically connected to the PLC controller 7 to receive the signal from the temperature sensor 16 and control the operation of the solenoid valve, the refrigeration unit 2, and the heating unit 3.

[0042] It is understood that this utility model stores waste cold / waste heat and feeds it back to the test chamber during mode switching to accelerate temperature regulation and realize energy recovery and reuse. At the same time, the fan 5 is connected to the refrigeration unit 2 and the heating unit 3 through pipelines to form a dual airflow path, which can be flexibly switched or used simultaneously to improve circulation efficiency and temperature regulation flexibility.

[0043] A specific application of the operation process in this embodiment is as follows: At the start of the test, in the low temperature test mode, the fan 5 and evaporator 9 are started. The solenoid valve on the air supply pipe 1201 connecting the refrigeration unit 2 and the four-way connector 12 is opened. The solenoid valve on the air supply pipe 1401 connecting the refrigeration unit 2 and the three-way connector 14 is opened. The solenoid valve on the connecting pipe 401 connecting the energy recovery box 4 and the test box 1 is opened. The solenoid valve on the air supply pipe 1501 connecting the energy recovery box 4 and the four-way connector 15 is opened. The remaining solenoid valves are closed. The fan 5 sends the airflow into the refrigeration box 8 and cools it through the evaporator 9. Then the gas enters the test box 1 and returns to the fan 5 through the energy recovery box 4, realizing the air circulation and cooling. At the same time, the heat storage material in the energy recovery box 4 is cooled and stored.

[0044] In high-temperature test mode, the fan 5 and the resistance wire heater 11 are started. The solenoid valve on the air supply pipe 1201 connecting the heating unit 3 and the four-way connector 12 is opened. The solenoid valve on the air supply pipe 1401 connecting the heating unit 3 and the three-way connector 14 is opened. The solenoid valve on the connecting pipe 401 connecting the energy recovery box 4 on the other side and the test box 1 is opened. The solenoid valve connecting the energy recovery box 4 and the air supply pipe 1501 is opened. The remaining solenoid valves are closed. The fan 5 sends the airflow into the heating box 10 and heats it through the resistance wire heater 11. Then the gas enters the test box 1 and returns to the fan 5 through the energy recovery box 4, realizing the circulation and heating of the air. At the same time, the heat storage material in the energy recovery box 4 is heated and stores energy.

[0045] When the test mode changes, fan 5 remains on, the solenoid valves of air supply pipe 3 (1501), air supply pipe 2 (1401), and air supply pipe 1 (1201) are closed, and the solenoid valves on intake pipe 1502 and exhaust pipe 101 are open. When switching to low-temperature test mode, the solenoid valve on intake pipe 1301, which connects to the energy recovery box 4 near the refrigeration unit 2 and the three-way connector 13, is opened. Fan 5 introduces outside air into energy recovery box 4. If energy recovery box 4 contains cold energy, it enters test chamber 1 under the influence of airflow. The air is cooled inside the test chamber 1, and then the airflow is discharged from the test chamber 1 through the exhaust pipe 101, which makes the test chamber 1 cool down quickly. When switching to the high temperature test mode, the solenoid valve on the air inlet pipe 1301 connected to the energy recovery box 4 near the heating unit 3 and the three-way connector 13 is opened. The fan 5 introduces the outside air into the energy recovery box 4. If the energy recovery box 4 stores heat energy, it enters the test chamber 1 under the drive of the airflow, which heats up the test chamber 1. Then the airflow is discharged from the test chamber 1 through the exhaust pipe 101, which makes the test chamber 1 heat up quickly.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," and "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, 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.

[0047] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automotive electronic thermal cycling test device, comprising a test chamber (1), characterized in that, Also includes: Two energy recovery boxes (4) are fixed on the left and right sides of the test box (1), and the energy recovery boxes (4) are connected to the test box (1) through a connecting pipe (401); A fan (5) is set above the test box (1). The air outlet of the fan (5) is connected to the interface of the four-way connector (12), and the two interfaces of the four-way connector (12) are connected to the refrigeration unit (2) and the heating unit (3) respectively through the air supply pipe (1201). An air outlet (6) is installed inside the test chamber (1). The air outlet (6) is connected to the interface of the three-way connector (14) through the air outlet pipe (601). The other two interfaces of the three-way connector (14) are connected to the refrigeration unit (2) and the heating unit (3) through the air supply pipe (1401) respectively.

2. The automotive electronic thermal cycling test device according to claim 1, characterized in that: One port of the four-way connector (12) is connected to one port of the three-way connector (13) through the connecting pipe (1202), and the other two ports of the three-way connector (13) are connected to the energy recovery box (4) through the air inlet pipe (1301).

3. The automotive electronic thermal cycling test device according to claim 2, characterized in that: The air inlet of the fan (5) is connected to one interface of the four-way connector (15), and the other two interfaces of the four-way connector (15) are connected to the energy recovery box (4) through the air supply pipe (1501).

4. The automotive electronic thermal cycling test device according to claim 3, characterized in that: One interface of the four-way connector (15) is connected to the intake pipe (1502), and the test box (1) is connected to the exhaust pipe (101).

5. The automotive electronic thermal cycling test device according to claim 1, characterized in that: The refrigeration unit (2) includes a refrigeration box (8) and an evaporator (9) fixed inside it, and the evaporator (9) is connected to an external compressor condenser unit through a pipeline.

6. The automotive electronic thermal cycling test device according to claim 1, characterized in that: The heating unit (3) includes a heating box (10) and a resistance wire heater (11) fixed inside it.

7. The automotive electronic thermal cycling test device according to claim 1, characterized in that: The energy recovery box (4) is filled with heat storage material.

8. The automotive electronic thermal cycling test device according to claim 4, characterized in that: Solenoid valves are installed on the exhaust pipe (101), air supply pipe one (1201), air intake pipe (1301), air supply pipe two (1401), air supply pipe three (1501) and air intake pipe (1502), and a PLC controller (7) is installed on the outer wall of the test box (1).

9. The automotive electronic thermal cycling test device according to claim 8, characterized in that: A temperature sensor (16) is fixedly installed on the inner wall of the test chamber (1), and the temperature sensor (16) is electrically connected to the PLC controller (7).

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