High and low temperature cycle test equipment

Abstract

The utility model discloses high and low temperature cycle test equipment which comprises a box body, at least one test cabin is arranged in the box body, and a flow guide cavity is arranged on one side of the test cabin; the refrigeration mechanism comprises a refrigeration source and a cold source circulation channel, and the cold source circulation channel communicates with the refrigeration source and the flow guide cavity; the heating mechanism comprises a plurality of heat sources, and the heat sources are all arranged in the flow guide cavity; the circulating mechanism is arranged in the flow guide cavity, and the circulating mechanism is arranged to convey air flow to the test cabin from the flow guide cavity; and the electric control system is in signal connection with the refrigerating mechanism, the heating mechanism and the circulating mechanism. According to the utility model, the temperature in the test cabin is controlled through the synergistic effect of the refrigeration mechanism and the heating mechanism, and the working state of a product under severe weather conditions is simulated, so that the performance and the reliability of the product are tested and evaluated, the speed and the efficiency of a temperature cycle test can be effectively improved, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of inspection and testing, in particular to a high and low temperature cycle testing device. Background Art

[0002] High and low temperature cycle test equipment is an essential test equipment in the fields of new energy, electronics, scientific research, etc. It adjusts the temperature in the box by controlling the heating and cooling system, and provides corresponding temperature control options. It can simulate the working state of the product under severe weather conditions, such as extreme cold and freezing or high temperature in summer, so as to test and evaluate the performance and reliability of the product. It is used to test and determine the parameters and performance of batteries, electrical, electronic and other products and materials after environmental changes, so as to provide products for design, improvement, identification and factory inspection. At present, in traditional tests, cycle testing requires repeated cycles of temperature, from negative temperature (such as -60℃) to positive temperature (such as +150℃), and then from positive temperature to negative temperature. This process takes a long time. In addition, according to technical requirements, the product must be stored at a specified temperature for a certain period of time, such as one hour at -60℃, +25℃, +150℃, etc. Therefore, a cycle test takes several hours. For multiple temperature cycle tests, the test efficiency is extremely low and the test cost is too high. Therefore, it is necessary to improve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a high and low temperature cycle testing device to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a high and low temperature cycle testing device, comprising:

[0005] A box body, wherein the box body is provided with at least one test chamber, and a flow guide cavity is provided on one side of the test chamber;

[0006] A refrigeration mechanism, the refrigeration mechanism comprising a refrigeration source and a refrigeration source circulation channel, the refrigeration source circulation channel being respectively connected to the refrigeration source and the flow guide cavity;

[0007] A heating mechanism, the heating mechanism comprising a plurality of heat sources, the plurality of heat sources being disposed in the flow guiding cavity;

[0008] A circulation mechanism, the circulation mechanism is disposed in the guide cavity, and the circulation mechanism is configured to convey air flow from the guide cavity to the test chamber;

[0009] An electric control system is respectively connected to the refrigeration mechanism, the heating mechanism and the circulation mechanism by signals.

[0010] Preferably, the flow guide cavity is provided with a cold source inlet and a cold source outlet, and the cold source inlet and the cold source outlet are respectively connected to the cold source circulation channel.

[0011] Preferably, the guide cavity is L-shaped, and the plurality of heat sources are respectively arranged below and on the side of the test chamber.

[0012] Preferably, the circulation mechanism comprises a centrifugal fan and a drive motor, the centrifugal fan is arranged in the guide cavity, and the centrifugal fan is communicated with the test chamber, and the drive motor is transmission-connected to the centrifugal fan.

[0013] Preferably, the electric control system comprises a control area, which is arranged on the box and is provided with switches, buttons and a touch screen, and the switches, buttons and the touch screen are respectively connected to the electric control system signals.

[0014] Preferably, the electric control system further comprises a sensor, wherein the sensor is configured to detect the temperature and changes in the test chamber, and the sensor is connected to the electric control system signal.

[0015] Preferably, the test cabin is provided with a cabin door, the cabin door is movably connected to the test cabin, and the cabin door is provided with an observation window.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The utility model controls the temperature in the test chamber through the synergistic effect of the refrigeration mechanism and the heating mechanism, simulates the working state of the product under adverse weather conditions, and thus tests and evaluates the performance and reliability of the product. When the temperature of the test chamber needs to be increased, the heating mechanism is started, and the heat source generates heat, so that the temperature in the test chamber gradually increases. When the temperature needs to be lowered, the refrigeration mechanism starts to work, and the heat generated by the refrigeration source circulates in the cold source circulation channel, taking away the heat in the test chamber and causing the temperature to gradually decrease. The electronic control system monitors the temperature in the test chamber in real time through sensors, and automatically adjusts according to the set value to maintain a stable temperature environment in the test chamber, which can effectively improve the speed and efficiency of temperature cycle testing and reduce testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0019] Figure 2 This is the second structural diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the test cabin in the utility model;

[0021] Figure 4It is a schematic diagram of the main structure of the test cabin in the utility model.

[0022] The reference numerals and names in the figures are as follows:

[0023] 1. Box body; 11. Test chamber; 111. Chamber door; 112. Observation window; 12. Diversion chamber; 121. Cold source inlet; 122. Cold source outlet; 2. Refrigeration mechanism; 21. Cold source; 22. Cold source circulation channel; 3. Heating mechanism; 31. Heat source; 4. Circulation mechanism; 41. Centrifugal fan; 42. Drive motor; 5. Electronic control system; 51. Control area; 511. Switch; 512. Button; 513. Touch screen; 52. Sensor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figures 1 to 4 The utility model provides an embodiment: a high and low temperature cycle test device, including a box body 1, a test cabin 11, a refrigeration mechanism 2, a heating mechanism 3, a circulation mechanism 4 and an electronic control system 5 are arranged in the box body 1, the number of the test cabins 11 is two, the two test cabins 11 are stacked vertically, and one side of the two test cabins 11 is provided with a guide cavity 12, the guide cavity 12 is connected to the refrigeration mechanism 2, the heating mechanism 3 is arranged in the guide cavity 12, and the test cabin 11 is simulated with a high and low temperature environment, so as to detect the performance and stability of the product under different environments. The circulation mechanism 4 is arranged in the guide cavity 12, and is used to convey airflow to the test cabin 11, accelerate the temperature change in the test cabin 11 and make the temperature distribution of the test cabin 11 more uniform, and the electronic control system 5 is respectively connected with the refrigeration mechanism 2, the heating mechanism 3 and the circulation mechanism 4 signals, and is used to control the start and stop of each mechanism respectively.

[0026] More specifically, the refrigeration mechanism 2 includes a refrigeration source 21 and a cold source circulation channel 22. The guide cavity 12 is provided with a cold source inlet 121 and a cold source outlet 122. The cold source circulation channel 22 is respectively connected with the refrigeration source 21, the cold source inlet 121 and the cold source outlet 122. The cold air generated by the refrigeration source 21 enters the guide cavity 12 from the cold source inlet 121 through the cold source circulation channel 22, and is then transported to the test cabin 11 by the circulation mechanism 4, and heat exchanges with the test cabin 11 to reduce the temperature of the test cabin 11. Then, the cold air is transported to the refrigeration source 21 through the cold source outlet 122 and the cold source circulation channel 22, and is cooled by the refrigeration source 21 and circulated again to maintain the low temperature environment of the test cabin 11.

[0027] More specifically, the guide cavity 12 is L-shaped to support the test chamber 11. The heating mechanism 3 includes a plurality of heat sources 31, which are respectively arranged below and on the side of the test chamber 11. Not only can the circulation mechanism 4 deliver the hot air generated in the guide cavity 12 into the test chamber 11, but the heat source 31 below the test chamber 11 can also bake the test chamber 11 to increase the heating speed.

[0028] More specifically, the circulation mechanism 4 includes a centrifugal fan 41 and a drive motor 42. The centrifugal fan 41 is arranged in the guide chamber 12 and is connected to the test chamber 11. The drive motor 42 is connected to the centrifugal fan 41 to drive the centrifugal fan 41 to rotate, thereby conducting the cold and hot air flows in the guide chamber 12 to the test chamber 11, improving the temperature uniformity in the chamber, increasing the air flow rate, thereby improving the heating and cooling capabilities, and greatly improving the temperature uniformity and fluctuation of the test chamber 11.

[0029] More specifically, the electric control system 5 includes a control area 51 disposed on the surface of the housing 1 , and the control area 51 is provided with a switch 511 , a button 512 and a touch screen 513 respectively connected to the electric control system 5 signals, and used for starting and stopping and independently controlling various functions of the device.

[0030] More specifically, the electronic control system 5 also includes a sensor 52 connected to the electronic control system 5 signal. The sensor 52 is configured to detect the temperature and changes in the test chamber 11, so as to detect the temperature conditions in the test chamber 11 in real time, feed the data back to the electronic control system 5 and display it on the touch screen 513, so as to facilitate real-time adjustment.

[0031] More specifically, the test chamber 11 is provided with a door 111 , which is movably connected to the test chamber 11 , and the door 111 is provided with an observation window 112 for visually observing the situation in the test chamber 11 .

[0032] Working principle: The working principle of the utility model is mainly based on the synergy of the refrigeration mechanism 2 and the heating mechanism 3. When the temperature of the test chamber 11 needs to be increased, the heating mechanism 3 is started, and the heat source 31 generates heat, so that the temperature in the test chamber 11 gradually increases. When the temperature needs to be lowered, the refrigeration mechanism 2 starts to work, and the heat generated by the cooling source 21 circulates in the cold source circulation channel 22, taking away the heat in the test chamber 11, and gradually reducing the temperature. The electronic control system 5 monitors the temperature in the test chamber 11 in real time through the sensor 52, and automatically adjusts according to the set value to maintain a stable temperature environment in the test chamber 11.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high and low temperature cycle test equipment, characterized in that: include: A box body (1), the box body (1) being provided with at least one test chamber (11), and a flow guide chamber (12) being provided on one side of the test chamber (11); A refrigeration mechanism (2), the refrigeration mechanism (2) comprising a refrigeration source (21) and a refrigeration source circulation channel (22), the refrigeration source circulation channel (22) being respectively connected to the refrigeration source (21) and the flow guide cavity (12); A heating mechanism (3), the heating mechanism (3) comprising a plurality of heat sources (31), the plurality of heat sources (31) being arranged in the flow guide cavity (12); a circulation mechanism (4), the circulation mechanism (4) being arranged in the flow guiding cavity (12), and the circulation mechanism (4) being arranged to convey an air flow from the flow guiding cavity (12) to the test chamber (11); An electric control system (5), wherein the electric control system (5) is respectively connected to the refrigeration mechanism (2), the heating mechanism (3) and the circulation mechanism (4) by signals.

2. A high and low temperature cycle testing device according to claim 1, characterized in that: The flow guide cavity (12) is provided with a cold source inlet (121) and a cold source outlet (122), and the cold source inlet (121) and the cold source outlet (122) are respectively connected to the cold source circulation channel (22).

3. A high and low temperature cycle testing device according to claim 1, characterized in that: The flow guide cavity (12) is L-shaped, and the plurality of heat sources (31) are respectively arranged below and on the side of the test chamber (11).

4. The high and low temperature cycle testing equipment according to claim 1, characterized in that: The circulation mechanism (4) comprises a centrifugal fan (41) and a drive motor (42); the centrifugal fan (41) is arranged in the flow guide cavity (12), the centrifugal fan (41) is connected to the test chamber (11), and the drive motor (42) is transmission-connected to the centrifugal fan (41).

5. The high and low temperature cycle testing equipment according to claim 1, characterized in that: The electric control system (5) comprises a control area (51), the control area (51) being arranged on the box (1), and the control area (51) being provided with a switch (511), a button (512) and a touch screen (513), the switch (511), the button (512) and the touch screen (513) being respectively connected to signals of the electric control system (5).

6. A high and low temperature cycle testing device according to claim 5, characterized in that: The electric control system (5) further comprises a sensor (52), wherein the sensor (52) is configured to detect the temperature and changes in the test chamber (11), and the sensor (52) is signal-connected to the electric control system (5).

7. The high and low temperature cycle testing equipment according to claim 1, characterized in that: The test chamber (11) is provided with a chamber door (111), the chamber door (111) is movably connected to the test chamber (11), and the chamber door (111) is provided with an observation window (112).

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