Temperature control device of test machine

Abstract

The utility model relates to the technical field of photovoltaic solar cells, in particular to a temperature control device of a testing machine, which comprises a testing machine body, a temperature control device, a temperature control device and a temperature control device, and is characterized in that the testing machine body is used for testing a battery piece and is internally provided with a conveyor belt; and the temperature control mechanism comprises a temperature control box, the side walls of the two sides of the temperature control box are rotationally connected with conveying rollers through supports, and a conveying belt is connected between the two conveying rollers. According to the utility model, the temperature control mechanism is arranged, heat in the cooling chamber can be discharged outwards, cooling and heat dissipation treatment can be carried out on the battery piece, and the temperature sensor in the cooling chamber can sense the temperature change in the cooling chamber, so that the rotating speed of the exhaust fan and the cooling speed of the battery piece can be controlled through the PLC control mechanism; therefore, the temperature of the battery piece in each cooling chamber is controlled, it is guaranteed that the temperature of the battery piece flowing out of the last cooling chamber is 25 + / -2 DEG C, and then the battery piece is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic solar cells, in particular to a temperature control device for a testing machine. Background Art

[0002] The current standard test temperature for photovoltaic solar cells is 25±2℃, but when the cells flow out of the sintering furnace, the outlet temperature is around 60-80℃, and the temperature at the test station is >27℃, which does not meet the test standards, resulting in the following defects:

[0003] 1. Waste of production capacity: work-in-progress accumulation, serious retesting, and increased labor costs;

[0004] 2. Substandard quality: The battery cells are subject to multiple human interventions, which increases the risk of scratches, fragments, and contamination. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a temperature control device for a testing machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A temperature control device for a testing machine, comprising:

[0008] A testing machine, the testing machine is used to test the battery cells, and a conveyor belt is provided inside the testing machine;

[0009] A temperature control mechanism, the temperature control mechanism includes a temperature control box, the side walls of the temperature control box are rotatably connected to conveyor rollers through brackets, a conveyor belt is connected between the two conveyor rollers, one of the brackets is fixedly connected to a motor that drives the conveyor rollers to rotate, the inner wall of the temperature control box is sealed and fixedly connected with a plurality of partitions, the plurality of partitions divide the temperature control box into a plurality of cooling chambers, the side walls of the conveyor belt are arranged through the plurality of cooling chambers, the inner wall of the cooling chamber is provided with a conveying port that cooperates with the top of the conveyor belt, an exhaust fan is installed on the top of the cooling chamber, a temperature sensor is fixedly connected to the inner wall of the cooling chamber, and the temperature sensor and the exhaust fan are electrically connected through an external power supply and a PLC control mechanism.

[0010] Preferably, the temperature control box is provided with a plurality of liquid storage chambers corresponding one to one with the plurality of cooling chambers, the liquid storage chambers are provided with cooling liquid, a spiral tube is fixedly connected to the bottom of the liquid storage chamber, the lower end of the spiral tube is connected to the lower end of the temperature control box through an air inlet pipe, and the upper end of the spiral tube is connected to the bottom of the corresponding cooling chamber through an air outlet pipe.

[0011] Preferably, a semiconductor refrigeration sheet is installed at the bottom of the liquid storage cavity, the heat absorption end of the semiconductor refrigeration sheet is located in the liquid storage cavity, and the heat release end of the semiconductor refrigeration sheet is located outside the temperature control box.

[0012] Preferably, a side wall of the bracket close to the test body is fixedly connected with a buffer plate via a connecting rod, and the buffer plate is arranged to be inclined downward toward the conveyor belt.

[0013] Preferably, the conveyor belt is a heat-resistant conveyor belt.

[0014] The utility model has the following beneficial effects:

[0015] 1. A temperature control mechanism is set up, and multiple exhaust fans are started to discharge the heat in the cooling chamber to the outside, thereby cooling and dissipating the battery cells. The temperature sensor located in the cooling chamber can sense the temperature change in the cooling chamber, so as to control the speed of the exhaust fan through the PLC control mechanism. This control method is a prior art, which controls the cooling speed of the battery cells, thereby controlling the temperature of the battery cells in each cooling chamber, ensuring that the temperature of the battery cells after flowing out of the last cooling chamber is 25±2℃, and then testing them, to avoid the prior art that the temperature of the battery cells is greater than 27℃ when they arrive at the test station, which does not meet the test standards, resulting in waste of production capacity and substandard quality.

[0016] 2. Set up an air inlet pipe, a spiral pipe and an air outlet pipe. When the exhaust fan draws air into the cooling chamber, the external gas can enter the cooling chamber through the air inlet pipe, the spiral pipe and the air outlet pipe. At this time, the coolant can perform preliminary cooling on the gas. The temperature of the gas entering the cooling chamber is relatively low, which accelerates the cooling of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic structural diagram of a temperature control device for a testing machine.

[0018] In the figure: 1. test body; 2. conveyor belt; 3. temperature control box; 4. conveyor roller; 5. conveyor belt; 6. motor; 7. partition; 8. cooling chamber; 9. conveying port; 10. exhaust fan; 11. temperature sensor; 12. liquid storage chamber; 13. spiral tube; 14. air inlet pipe; 15. air outlet pipe; 16. semiconductor refrigeration plate; 17. buffer plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1 A temperature control device for a testing machine includes a testing machine body 1, which is used to test battery cells. A conveyor belt 2 is provided inside the testing machine body 1, so that the battery cells are conveyed to the testing machine body 1 on the conveyor belt 2 for testing. This is prior art.

[0021] The temperature control mechanism includes a temperature control box 3, and the side walls of the temperature control box 3 are rotatably connected to conveying rollers 4 through brackets. A conveyor belt 5 is connected between the two conveying rollers 4, and a motor 6 for driving the conveying rollers 4 to rotate is fixedly connected to one of the brackets. The inner wall of the temperature control box 3 is sealed and fixedly connected with multiple partitions 7, and the multiple partitions 7 divide the temperature control box 3 into multiple cooling chambers 8. The side walls of the conveyor belt 5 are arranged through the multiple cooling chambers 8. The inner wall of the cooling chamber 8 is provided with a conveying port 9 that cooperates with the top of the conveyor belt 5. An exhaust fan 10 is installed on the top of the cooling chamber 8. A temperature sensor 11 is fixedly connected to the inner wall of the cooling chamber 8. The temperature sensor 11 and the exhaust fan 10 are electrically connected through an external power supply and a PLC control mechanism.

[0022] The conveyor belt 5 is a heat-resistant conveyor belt, which can withstand a test temperature of no more than 150°C and a maximum short-term operating temperature of 200°C. It is code-named T3 and is a prior art.

[0023] Furthermore, the battery cells coming out of the sintering furnace are moved in multiple cooling chambers 8 through the conveyor belt 5. At this time, multiple exhaust fans 10 are started to discharge the heat in the cooling chamber 8 to the outside, thereby cooling and dissipating the heat of the battery cells. The temperature sensor 11 located in the cooling chamber 8 can sense the temperature change in the cooling chamber 8, so as to control the rotation speed of the exhaust fan 10 through the PLC control mechanism. This control method is a prior art, which controls the cooling speed of the battery cells, thereby controlling the temperature of the battery cells in each cooling chamber 8, ensuring that the temperature of the battery cells after flowing out of the last cooling chamber 8 is 25±2°C, and then testing it, thereby avoiding the prior art that the temperature of the battery cells is greater than 27°C when they arrive at the test station, which does not meet the test standards, resulting in waste of production capacity and substandard quality.

[0024] In addition, multiple cooling chambers 8 are provided to enable multi-level temperature control of the battery cells, so as to achieve accurate temperature control of the battery cells.

[0025] The temperature control box 3 is provided with a plurality of liquid storage chambers 12 corresponding to the plurality of cooling chambers 8 one by one. The liquid storage chamber 12 is provided with cooling liquid. A spiral tube 13 is fixedly connected to the bottom of the liquid storage chamber 12. The lower end of the spiral tube 13 is connected to the lower end of the temperature control box 3 through an air inlet pipe 14, and the upper end of the spiral tube 13 is connected to the bottom of the corresponding cooling chamber 8 through an air outlet pipe 15.

[0026] Furthermore, when the exhaust fan 10 draws air from the cooling chamber 8, the external gas can enter the cooling chamber 8 through the air inlet pipe 14, the spiral tube 13 and the air outlet pipe 15. At this time, the coolant can perform preliminary cooling on the gas, and the temperature of the gas entering the cooling chamber 8 is relatively low, thereby accelerating the cooling of the battery cells.

[0027] A semiconductor refrigeration sheet 16 is installed at the bottom of the liquid storage chamber 12. The heat absorption end of the semiconductor refrigeration sheet 16 is located in the liquid storage chamber 12, and the heat release end of the semiconductor refrigeration sheet 16 is located outside the temperature control box 3. Furthermore, the semiconductor refrigeration sheet 16 utilizes the Peltier effect of semiconductor materials. When direct current passes through a thermocouple formed by two different semiconductor materials in series, heat can be absorbed and released at both ends of the thermocouple respectively, thereby achieving the purpose of refrigeration. This is a prior art. Then, when direct current is passed into the semiconductor refrigeration sheet 16, the coolant can be cooled at this time to ensure the continuous cooling effect of the coolant.

[0028] The side wall of the bracket close to the test body 1 is fixedly connected with a buffer plate 17 through a connecting rod. The buffer plate 17 is arranged to be inclined downward toward the conveyor belt 2 to buffer the cooled battery cells before they are conveyed out, thereby protecting them.

[0029] When testing the battery cells coming out of the sintering furnace, first start the motor 6 to rotate, and the two conveying rollers 4 rotate to make the conveyor belt 5 move from left to right, and then put the battery cells on the conveyor belt 5;

[0030] At this time, the battery cells pass through the multiple cooling chambers 8 one by one under the action of the conveyor belt 5, and the exhaust fan 10 is started, and then the exhaust fan 10 can discharge the hot air in the cooling chamber 8 to dissipate the heat and cool the battery cells. The temperature sensor 11 located in the cooling chamber 8 can sense the temperature change in the cooling chamber 8, so as to control the speed of the exhaust fan 10 through the PLC control mechanism. This control method is the existing technology, which controls the cooling speed of the battery cells, thereby controlling the temperature of the battery cells in each cooling chamber 8, ensuring that the temperature of the battery cells after flowing out of the last cooling chamber 8 is 25±2°C;

[0031] When the exhaust fan 10 rotates, the external gas can enter the cooling chamber 8 through the air inlet pipe 14, the spiral pipe 13 and the air outlet pipe 15. At this time, the coolant can perform preliminary cooling on the gas. The temperature of the gas entering the cooling chamber 8 is relatively low, which accelerates the cooling of the battery cells.

[0032] The cooled battery cells are transported to the conveyor belt 2 through the buffer plate 17 under the action of the conveyor belt 5 . At this time, the battery cells are transported to the test machine 1 on the conveyor belt 2 for testing.

[0033] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A temperature control device for a testing machine, characterized in that: include: A testing machine (1), the testing machine (1) being used to test a battery cell, and a conveyor belt (2) being provided inside the testing machine (1); A temperature control mechanism, the temperature control mechanism comprises a temperature control box (3), the side walls of the temperature control box (3) are rotatably connected to conveying rollers (4) through brackets, a conveyor belt (5) is connected between the two conveying rollers (4), one of the brackets is fixedly connected to a motor (6) for driving the conveying rollers (4) to rotate, the inner wall of the temperature control box (3) is sealed and fixedly connected to a plurality of partitions (7), the plurality of partitions (7) divide the temperature control box (3) into a plurality of cooling chambers (8), the side wall of the conveyor belt (5) is arranged to penetrate the plurality of cooling chambers (8), the inner wall of the cooling chamber (8) is provided with a conveying port (9) cooperating with the upper part of the conveyor belt (5), an exhaust fan (10) is installed on the top of the cooling chamber (8), the inner wall of the cooling chamber (8) is fixedly connected to a temperature sensor (11), and the temperature sensor (11) and the exhaust fan (10) are electrically connected through an external power supply and a PLC control mechanism.

2. A temperature control device for a testing machine according to claim 1, characterized in that: The temperature control box (3) is provided with a plurality of liquid storage chambers (12) corresponding to the plurality of cooling chambers (8) one by one. The liquid storage chambers (12) are provided with cooling liquid. A spiral tube (13) is fixedly connected to the bottom of the liquid storage chamber (12). The lower end of the spiral tube (13) is connected to the lower end of the temperature control box (3) through an air inlet pipe (14), and the upper end of the spiral tube (13) is connected to the bottom of the corresponding cooling chamber (8) through an air outlet pipe (15).

3. A temperature control device for a testing machine according to claim 2, characterized in that: A semiconductor cooling sheet (16) is installed at the bottom of the liquid storage chamber (12); a heat absorbing end of the semiconductor cooling sheet (16) is located inside the liquid storage chamber (12); and a heat releasing end of the semiconductor cooling sheet (16) is located outside the temperature control box (3).

4. A temperature control device for a testing machine according to claim 1, characterized in that: A buffer plate (17) is fixedly connected to the side wall of the bracket close to the test body (1) via a connecting rod, and the buffer plate (17) is arranged to be inclined downward toward the conveyor belt (2).

5. A temperature control device for a testing machine according to claim 1, characterized in that: The conveyor belt (5) is a heat-resistant conveyor belt.

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