New energy battery cold plate cold and hot impact test system

Abstract

A cold plate hot and cold impact test system for a new energy battery relates to the technical field of battery cold plate test, and comprises a hot energy storage assembly, a cold energy storage assembly, a first test box and a second test box, and the hot energy storage assembly is connected with the first test box and the second test box through pipelines in an on-off manner. The cold energy storage assembly is connected with the first test box and the second test box through pipelines in an on-off mode, the first test box and the second test box are both used for containing a battery cold plate to be tested, the hot energy storage assembly is used for providing high-temperature liquid, and the cold energy storage assembly is used for providing low-temperature liquid. By adopting the technical scheme, the hot energy storage assembly and the cold energy storage assembly work cooperatively by controlling the on-off of the corresponding pipelines, so that the cold and hot impact test can be carried out on the two battery cold plates at the same time, and the test efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cold plate testing, and particularly relates to a new energy battery cold plate thermal shock testing system. Background Art

[0002] The battery cold plate is an indispensable thermal management component in the new energy battery system. The battery cold plate keeps the battery temperature within a suitable operating temperature range through efficient heat conduction and coolant circulation, thereby optimizing the performance and life of the battery. In order to ensure the effectiveness and reliability of the battery cold plate, during the design and manufacturing process of the battery cold plate, it is necessary to conduct strict testing and verification on the battery cold plate. Among them, the thermal shock test refers to the performance test of the battery cold plate by simulating extreme working conditions such as high temperature or low temperature of the battery. Specifically, by quickly switching hot and cold liquids to simulate the use of the battery in different temperature environments, so as to evaluate the thermal management ability and durability of the battery cold plate.

[0003] In the existing related technologies, the battery cold plate is usually tested by a thermal shock test chamber. The thermal shock chamber generally includes a high-temperature liquid supply system, a low-temperature liquid supply system, and an electrical control system. Among them, the liquid supply circulation loop formed by the high-temperature liquid supply system and the low-temperature liquid supply system can only test one battery cold plate at the same time. Specifically, during the test, the high-temperature liquid supply system and the low-temperature liquid supply system are respectively made to work through the electrical control system to simulate the use of the battery in different temperature environments, so as to conduct a thermal shock test on the battery cold plate.

[0004] Regarding the above-mentioned related technologies, the inventor believes that there are the following technical defects: a set of high-temperature liquid supply system and low-temperature liquid supply system can only conduct a thermal shock test on the same battery cold plate each time, with high energy consumption and low test efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a new energy battery cold plate thermal shock testing system for the defects and deficiencies of the existing technology, which can test two battery cold plates at the same time, with low energy consumption and can greatly improve the test efficiency.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A new energy battery cold plate thermal shock testing system includes a thermal energy storage component and a cold energy storage component. The thermal energy storage component is used to provide high-temperature liquid, and the cold energy storage component is used to provide low-temperature liquid. It also includes a first test box and a second test box for placing the battery cold plates to be tested;

[0008] The thermal energy storage component is respectively connected to the first test chamber and the second test chamber through pipes in a switchable manner; the cold energy storage component is respectively connected to the first test chamber and the second test chamber through pipes in a switchable manner.

[0009] Optionally, liquid inlets and liquid outlets are provided on both the first test chamber and the second test chamber;

[0010] The thermal energy storage component includes a thermal energy storage tank, and the cold energy storage component includes a cold energy storage tank. A liquid supply port and a liquid return port are provided on both the thermal energy storage tank and the cold energy storage tank; the liquid supply port of the thermal energy storage tank is respectively connected to the liquid inlet of the first test chamber and the liquid inlet of the second test chamber through pipes in a switchable manner, and the liquid return port of the thermal energy storage tank is respectively connected to the liquid outlet of the first test chamber and the liquid outlet of the second test chamber through pipes in a switchable manner; the liquid supply port of the cold energy storage tank is respectively connected to the liquid inlet of the first test chamber and the liquid inlet of the second test chamber through pipes in a switchable manner, and the liquid return port of the cold energy storage tank is respectively connected to the liquid outlet of the first test chamber and the liquid outlet of the second test chamber through pipes in a switchable manner.

[0011] Optionally, the thermal energy storage component further includes a first heating pipe and a first temperature sensor that are electrically connected. The first heating pipe is arranged in the thermal energy storage tank, and the first temperature sensor is arranged on the thermal energy storage tank; and / or

[0012] The cold energy storage component includes a second heating pipe and a third temperature sensor that are electrically connected. The second heating pipe is arranged in the cold energy storage tank, and the third temperature sensor is arranged on the cold energy storage tank.

[0013] Optionally, it further includes: a refrigeration component, which includes a compressor, a condenser, a dryer filter, an expansion valve, a first evaporator, and a second evaporator that are sequentially connected through a refrigerant channel. The solution outlet of the cold energy storage tank is communicated with the heat exchange inlet of the second evaporator, the heat exchange outlet of the second evaporator is communicated with the solution inlet of the cold energy storage tank, the solution outlet of the thermal energy storage tank is communicated with the heat exchange inlet of the first evaporator, and the heat exchange outlet of the first evaporator is communicated with the solution inlet of the thermal energy storage tank.

[0014] Optionally, it further includes: an automatic liquid replenishment component, which includes a liquid storage tank, a liquid level switch, an automatic liquid replenishment pump, a liquid storage barrel, and a liquid replenishment flow switch. The liquid storage tank is respectively communicated with the thermal energy storage tank and the cold energy storage tank. The liquid replenishment flow switch is arranged in the liquid storage tank. The liquid storage tank is communicated with the liquid storage barrel, and the liquid storage barrel is used for storing corresponding liquid. The automatic liquid replenishment pump is arranged between the liquid storage barrel and the liquid storage tank, and the liquid replenishment flow switch is arranged between the automatic liquid replenishment pump and the liquid storage barrel.

[0015] Optionally, it further includes: a thermal internal circulation pump, which is arranged between the solution outlet of the thermal energy storage tank and the heat exchange inlet of the first evaporator; and / or

[0016] a thermal external circulation pump, which is arranged between the liquid supply port of the thermal energy storage tank and the liquid inlet of the first test chamber; and / or

[0017] a cold internal circulation pump, which is arranged between the solution outlet of the cold energy storage tank and the heat exchange inlet of the second evaporator; and / or

[0018] a cold external circulation pump, which is arranged between the liquid supply port of the cold energy storage tank and the liquid inlet of the second test chamber.

[0019] Optionally, a first switching valve, a second switching valve, a sixth switching valve, a seventh switching valve, a fourth switching valve, a fifth switching valve, a ninth switching valve and a tenth switching valve are arranged on the pipeline, wherein:

[0020] The first switching valve is arranged between the liquid supply port of the thermal energy storage tank and the liquid inlet of the first test chamber; the second switching valve is arranged between the liquid outlet of the first test chamber and the liquid return port of the thermal energy storage tank; the sixth switching valve is arranged between the liquid supply port of the cold energy storage tank and the liquid inlet of the second test chamber; the seventh switching valve is arranged between the liquid outlet of the second test chamber and the liquid return port of the cold energy storage tank;

[0021] One end of the fourth switching valve is connected between the second switching valve and the liquid return port of the thermal energy storage tank, and the other end is connected between the liquid outlet of the second test chamber and the seventh switching valve; one end of the fifth switching valve is connected between the liquid supply port of the thermal energy storage tank and the first switching valve, and the other end is connected between the liquid inlet of the second test chamber and the sixth switching valve; one end of the ninth switching valve is connected between the liquid supply port of the cold energy storage tank and the sixth switching valve, and the other end is connected between the liquid inlet of the first test chamber and the first switching valve; one end of the tenth switching valve is connected between the second switching valve and the liquid outlet of the first test chamber, and the other end is connected between the seventh switching valve and the liquid return port of the cold energy storage tank.

[0022] Optionally, it further includes: a first pressure sensor, a second pressure sensor and a third switching valve. One end of the third switching valve is connected between the liquid supply port of the thermal energy storage tank and the fifth switching valve, and the other end is connected between the fourth switching valve and the liquid return port of the thermal energy storage tank. The first pressure sensor is arranged between the liquid supply port of the thermal energy storage tank and the first switching valve, and the second pressure sensor is arranged between the second switching valve and the liquid outlet of the first test chamber; and / or

[0023] A third pressure sensor, a fourth pressure sensor, and an eighth switching valve. One end of the eighth switching valve is connected between the liquid supply port of the cold energy storage tank and the ninth switching valve, and the other end is connected between the tenth switching valve and the liquid return port of the cold energy storage tank. The third pressure sensor is arranged between the liquid supply port of the cold energy storage tank and the sixth switching valve, and the fourth pressure sensor is arranged between the liquid outlet of the second test box and the seventh switching valve.

[0024] Optionally, it further includes: a first ball valve and a second ball valve. The first ball valve is arranged between the first switching valve and the liquid inlet of the first test box, and the second ball valve is arranged between the liquid outlet of the first test box and the second switching valve; and / or

[0025] A third ball valve and a fourth ball valve. The third ball valve is arranged between the sixth switching valve and the liquid inlet of the second test box, and the fourth ball valve is arranged between the liquid outlet of the second test box and the seventh switching valve.

[0026] Optionally, it further includes: a second temperature sensor. The second temperature sensor is arranged between the first filter and the second pressure sensor; and / or

[0027] A fourth temperature sensor. The fourth temperature sensor is arranged between the second filter and the fourth pressure sensor.

[0028] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: By controlling the on-off of the corresponding pipelines, that is, by controlling the opening and closing of the first switching valve, the second switching valve, the fourth switching valve, the fifth switching valve, the sixth switching valve, the seventh switching valve, the ninth switching valve, and the tenth switching valve, the on-off of the corresponding pipelines can be instantaneously controlled, and high-temperature liquid or low-temperature liquid that meets the test requirements can be cyclically provided to the first test box and the second test box respectively, so that the battery cold plates located in the first test box and the second test box can be simultaneously subjected to thermal shock tests. The overall structure is simple and ingenious, with low energy consumption, greatly improving the test efficiency, having good working reliability, ensuring the thermal shock effect, and being beneficial to ensuring the accuracy of test data. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a thermal shock test system for a new energy battery cold plate of the present utility model;

[0031] Figure 2 It is a schematic structural diagram of the refrigeration component 100 of the present utility model;

[0032] Figure 3 It is a schematic diagram of a partial structure of the automatic liquid replenishing component 400 of the present utility model;

[0033] Figure 4 It is a schematic diagram of another partial structure of the automatic liquid replenishing component 400 of the present utility model;

[0034] Figure 5 It is a schematic structural diagram of the thermal energy storage component 200 of the present utility model;

[0035] Figure 6 It is a schematic structural diagram of the cold energy storage component 300 of the present utility model.

[0036] Explanation of reference numerals:

[0037] 100, refrigeration component; 110, compressor; 120, condenser; 130, expansion valve; 141, first evaporator; 142, second evaporator; 150, drying filter; 161, high pressure switch; 162, high pressure gauge; 171, low pressure switch; 172, low pressure gauge;

[0038] 200, thermal energy storage component; 210, thermal energy storage tank; 211, thermal internal circulation pump; 220, first heating pipe; 231, first temperature sensor; 232, second temperature sensor; 240, thermal external circulation pump; 250, first flowmeter; 261, first pressure sensor; 262, second pressure sensor; 271, first switching valve; 272, second switching valve; 273, third switching valve; 274, fourth switching valve; 275, fifth switching valve; 281, first ball valve; 282, second ball valve; 290, first filter;

[0039] 300, cold energy storage component; 310, cold energy storage tank; 311, cold internal circulation pump; 320, second heating pipe; 331, third temperature sensor; 332, fourth temperature sensor; 340, cold external circulation pump; 350, second flowmeter; 361, third pressure sensor; 362, fourth pressure sensor; 371, sixth switching valve; 372, seventh switching valve; 373, eighth switching valve; 374, ninth switching valve; 375, tenth switching valve; 381, third ball valve; 382, fourth ball valve; 390, second filter;

[0040] 400, Automatic liquid replenishment component; 410, Liquid storage tank; 420, Liquid level switch; 430, Liquid level display; 440, Automatic liquid replenishment pump; 450, Liquid replenishment flow switch; 460, Liquid storage bucket; 470, Third filter

[0041] 51, First test chamber; 52, Second test chamber Detailed implementation manner

[0042] The present utility model will be further described in detail below with reference to the accompanying drawings

[0043] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law

[0044] This embodiment relates to a thermal shock test system for a new energy battery cold plate, which is used to perform a thermal shock test on the battery cold plate after performing a constant current test, a constant voltage test, and a constant temperature test on the battery cold plate

[0045] Refer to Figure 1 , Figure 1 is a schematic structural diagram of a thermal shock test system for a new energy battery cold plate of the present invention. A thermal shock test system for a new energy battery cold plate provided in this embodiment includes a thermal energy storage component 200, a cold energy storage component 300, a first test chamber 51, and a second test chamber 52. Among them, both the first test chamber 51 and the second test chamber 52 are used to place the battery cold plate to be tested. The thermal energy storage component 200 is respectively connected to the first test chamber 51 and the second test chamber 52 through pipes in a switchable manner. The cold energy storage component 300 is respectively connected to the first test chamber 51 and the second test chamber 52 through pipes in a switchable manner. The thermal energy storage component 200 is used to provide the high-temperature liquid required for thermal shock to the battery cold plate in the first test chamber 51 or the second test chamber 52. The cold energy storage component 300 is used to provide the low-temperature liquid required for cold shock to the battery cold plate in the first test chamber 51 or the second test chamber 52. Specifically, the flow direction of the low-temperature liquid in the pipe is as shown by the solid line segment with a hollow arrow in Figure 1 , and the flow direction of the high-temperature liquid is as shown by the solid line segment with a solid arrow in Figure 1

[0046] ​By adopting the above technical solution, by controlling the on-off of the corresponding pipelines, high-temperature liquid or low-temperature liquid that meets the test requirements is cyclically supplied to the first test chamber 51 and the second test chamber 52 respectively, so that the battery cold plates located in the first test chamber 51 and the battery cold plates located in the second test chamber 52 can be subjected to thermal shock tests simultaneously. The test system has low energy consumption, greatly improves the test efficiency, has good working reliability, ensures the thermal shock effect, and is beneficial to ensuring the accuracy of test data.

[0047] Specifically, in some embodiments, both the first test chamber 51 and the second test chamber 52 are provided with liquid inlets and liquid outlets. The thermal energy storage assembly 200 includes a thermal energy storage tank 210. A liquid supply port and a liquid return port are provided on the thermal energy storage tank 210. The liquid supply port of the thermal energy storage tank 210 is respectively communicated with the liquid inlet of the first test chamber 51 and the liquid inlet of the second test chamber 52, and the liquid return port of the thermal energy storage tank 210 is respectively communicated with the liquid outlet of the first test chamber 51 and the liquid outlet of the second test chamber 52. The thermal energy storage tank 210 is used to store high-temperature liquid and supply it to the corresponding test chamber to perform thermal shock on the battery cold plate in the test chamber.

[0048] A liquid supply port and a liquid return port are provided on the cold energy storage tank 310. The liquid supply port of the cold energy storage tank 310 is respectively communicated with the liquid inlet of the first test chamber 51 and the liquid inlet of the second test chamber 52, and the liquid return port of the cold energy storage tank 310 is respectively communicated with the liquid outlet of the first test chamber 51 and the liquid outlet of the second test chamber 52. The cold energy storage tank 310 is used to store low-temperature liquid and supply it to the corresponding test chamber to perform cold shock on the battery cold plate.

[0049] Furthermore, in some embodiments, a plurality of switching valves are provided on the pipeline. The plurality of switching valves can all adopt two-way switching valves, and the on-off of the corresponding pipeline can be controlled by controlling the closing of the corresponding switching valve. Specifically, the plurality of switching valves include a first switching valve 271, a second switching valve 272, a fourth switching valve 274, a fifth switching valve 275, a sixth switching valve 371, a seventh switching valve 372, a ninth switching valve 374, and a tenth switching valve 375, where:

[0050] The first switching valve 271 is arranged between the liquid supply port of the thermal energy storage tank 210 and the liquid inlet of the first test chamber 51; the second switching valve 272 is arranged between the liquid outlet of the first test chamber 51 and the liquid return port of the thermal energy storage tank 210; the sixth switching valve 371 is arranged between the liquid supply port of the cold energy storage tank 310 and the liquid inlet of the second test chamber 52; the seventh switching valve 372 is arranged between the liquid outlet of the second test chamber 52 and the liquid return port of the cold energy storage tank 310.

[0051] One end of the fourth switching valve 274 is connected between the second switching valve 272 and the liquid return port of the thermal energy storage tank 210, and the other end of the fourth switching valve 274 is connected between the liquid outlet of the second test box 52 and the seventh switching valve 372; one end of the fifth switching valve 275 is connected between the liquid supply port of the thermal energy storage tank 210 and the first switching valve 271, and the other end of the fifth switching valve 275 is connected between the liquid inlet of the second test box 52 and the sixth switching valve 371.

[0052] One end of the ninth switching valve 374 is connected between the liquid supply port of the cold energy storage tank 310 and the sixth switching valve 371, and the other end of the ninth switching valve 374 is connected between the liquid inlet of the first test box 51 and the first switching valve 271; one end of the tenth switching valve 375 is connected between the liquid outlet of the first test box 51 and the second switching valve 272, and the other end of the tenth switching valve 375 is connected between the seventh switching valve 372 and the liquid return port of the cold energy storage tank 310.

[0053] Among them, a thermal external circulation pump 240 can be arranged between the liquid supply port of the thermal energy storage tank 210 and the liquid inlet of the first test box 51, and the high-temperature liquid in the thermal energy storage tank 210 is pumped into the first test box 51 or the second test box 52 through the thermal external circulation pump 240. A cold external circulation pump 340 can also be arranged between the liquid supply port of the cold energy storage tank 310 and the liquid inlet of the second test box 52, and the low-temperature liquid in the cold energy storage tank 310 is pumped into the first test box 51 or the second test box 52 through the cold external circulation pump 340.

[0054] With the above technical solution, during the test, the first switching valve 271, the second switching valve 272, the sixth switching valve 371 and the seventh switching valve 372 are opened, and the fourth switching valve 274, the fifth switching valve 275, the ninth switching valve 374 and the tenth switching valve 375 are closed. The high-temperature liquid is supplied by the thermal energy storage assembly 200 to perform thermal shock on the battery cold plate in the first test box 51, and the low-temperature liquid is supplied by the cold energy storage assembly 300 to perform cold shock on the battery cold plate in the second test box 52.

[0055] After a predetermined test time, the first switching valve 271 and the sixth switching valve 371 are closed, and the fifth switching valve 275 and the ninth switching valve 374 are opened. The low-temperature liquid in the loop is pushed back into the cold energy storage tank 310 by the high-temperature liquid in the loop, and at the same time, the high-temperature liquid in the loop is pushed back into the heat energy storage tank 210 by the low-temperature liquid in the loop. Subsequently, the second switching valve 272 and the seventh switching valve 372 are continuously closed, and the fourth switching valve 274 and the tenth switching valve 375 are opened, so that the high-temperature liquid loop is connected to the second test chamber 52, and the low-temperature liquid loop is connected to the first test chamber 51. The cold energy storage assembly 300 supplies low-temperature liquid to perform a cold shock on the battery cold plate in the first test chamber 51, and the heat energy storage assembly 200 supplies high-temperature liquid to perform a heat shock on the battery cold plate in the second test chamber 52.

[0056] After another predetermined test time, the fifth switching valve 275 and the ninth switching valve 374 are closed, and the first switching valve 271 and the sixth switching valve 371 are opened. The low-temperature liquid in the loop is pushed back into the cold energy storage tank 310 by the high-temperature liquid in the loop, and at the same time, the high-temperature liquid in the loop is pushed back into the heat energy storage tank 210 by the low-temperature liquid in the loop. Subsequently, the fourth switching valve 274 and the tenth switching valve 375 are continuously closed, and the second switching valve 272 and the seventh switching valve 372 are opened, so that the high-temperature liquid loop is connected to the first test chamber 51, and the low-temperature liquid loop is connected to the second test chamber 52. The heat energy storage assembly 200 supplies high-temperature liquid to perform a heat shock on the battery cold plate in the first test chamber 51, and the cold energy storage assembly 300 supplies low-temperature liquid to perform a cold shock on the battery cold plate in the second test chamber 52.

[0057] In this way, by regularly controlling the opening and closing of the corresponding switching valves, the on-off of the corresponding loops is instantaneously controlled, and high-temperature liquid or low-temperature liquid that meets the test requirements is provided for the battery cold plate in a cycle, so as to perform thermal shock tests on the battery cold plates in the first test chamber 51 and the second test chamber 52 at the same time. The overall structure is simple and ingenious, with low energy consumption, greatly improving the test efficiency, having good working reliability, ensuring the thermal shock effect, and being beneficial to ensuring the accuracy of test data.

[0058] Specifically, in some embodiments, the test system further includes a refrigeration assembly 100 for providing cold energy or heat energy. Refer to Figure 2 , Figure 2 which is a schematic structural diagram of the refrigeration assembly 100 of the present invention. The refrigeration assembly 100 includes a compressor 110, a condenser 120, a dryer filter 150, an expansion valve 130, a first evaporator 141, and a second evaporator 142 that are sequentially connected through a refrigerant channel. The flow direction of the refrigerant in the refrigerant channel of the refrigeration assembly 100 is as shown in Figure 2As shown by the dashed line segment with a solid arrow in the middle, the refrigerant outlet of the compressor 110 is connected to the refrigerant inlet of the condenser 120, the refrigerant outlet of the condenser 120 is connected to the refrigerant inlet of the expansion valve 130, the refrigerant outlet of the expansion valve 130 is connected to the refrigerant inlet of the first evaporator 141, the refrigerant outlet of the first evaporator 141 is connected to the refrigerant inlet of the second evaporator 142, and the refrigerant outlet of the second evaporator 142 is connected to the refrigerant inlet of the compressor 110. Among them, heat exchange inlets and heat exchange outlets are respectively provided on both the first evaporator 141 and the second evaporator 142.

[0059] A solution inlet and a solution outlet are provided on the cold energy storage tank 310. The solution outlet of the cold energy storage tank 310 is communicated with the heat exchange inlet of the second evaporator 142, and the heat exchange outlet of the second evaporator 142 is communicated with the solution inlet of the cold energy storage tank 310. A cold internal circulation pump 311 can be provided between the solution outlet of the cold energy storage tank 310 and the heat exchange inlet of the second evaporator 142. The liquid in the cold energy storage tank 310 is pumped into the second evaporator 142 through the cold internal circulation pump 311, and after the liquid in the cold energy storage tank 310 is cooled by heat exchange in the second evaporator 142, it flows back into the cold energy storage tank 310. In this way, the refrigeration assembly 100 provides cold energy for the cold energy storage assembly 300 to keep the liquid in the cold energy storage tank 310 constantly at a suitable low temperature. Similarly, a solution inlet and a solution outlet are provided on the heat energy storage tank 210. The solution outlet of the heat energy storage tank 210 is communicated with the heat exchange inlet of the first evaporator 141, and the heat exchange outlet of the first evaporator 141 is communicated with the solution inlet of the heat energy storage tank 210. A heat internal circulation pump 211 can be provided between the solution outlet of the heat energy storage tank 210 and the heat exchange inlet of the first evaporator 141. The liquid in the heat energy storage tank 210 is pumped into the first evaporator 141 through the heat internal circulation pump 211, and after the liquid in the heat energy storage tank 210 is heated by heat exchange in the first evaporator 141, it flows back into the heat energy storage tank 210. In this way, the refrigeration assembly 100 provides heat energy for the heat energy storage assembly 200 to keep the liquid in the heat energy storage tank 210 constantly at a suitable high temperature.

[0060] Among them, in some embodiments, in order to monitor the pressure in the refrigerant channel of the refrigeration assembly 100 in real time, a high-pressure switch 161 and a high-pressure gauge 162 are provided between the refrigerant outlet of the compressor 110 and the refrigerant inlet of the condenser 120, and a low-pressure switch 171 and a low-pressure gauge 172 are provided between the refrigerant outlet of the first evaporator 141 and the refrigerant outlet of the compressor 110.

[0061] Furthermore, in some embodiments, in order to facilitate real-time monitoring of the amount of liquid in the cold energy storage tank 310 or the heat energy storage tank 210 and add liquid to the cold energy storage tank 310 or the heat energy storage tank 210 in time when the liquid is insufficient, the test system further includes an automatic liquid replenishment assembly 400. Specifically, referring to Figure 3 and Figure 4 ,Figure 3 It is a schematic diagram of a partial structure of the automatic liquid replenishment component 400 of the present invention. Figure 4 It is a schematic diagram of another partial structure of the automatic liquid replenishment component 400 of the present invention. The automatic liquid replenishment component 400 includes a liquid storage tank 410, a liquid level switch 420, an automatic liquid replenishment pump 440, a liquid storage barrel 460, and a liquid replenishment flow switch 450. The liquid storage tank 410 is respectively communicated with the heat energy storage tank 210 and the cold energy storage tank 310. The liquid level switch 420 is arranged in the liquid storage tank 410 to monitor the liquid level height in the liquid storage tank 410. The liquid storage tank 410 is also communicated with the liquid storage barrel 460. The liquid storage barrel 460 is arranged outside for storing liquid. The automatic liquid replenishment pump 440 is arranged between the liquid storage barrel 460 and the liquid storage tank 410. The automatic liquid replenishment pump 440 is used to pump the liquid in the liquid storage barrel 460 into the liquid storage tank 410. The liquid replenishment flow switch 450 is arranged between the automatic liquid replenishment pump 440 and the liquid storage barrel 460. Thus, when the liquid level switch 420 monitors that the liquid in the liquid storage tank 410 is lower than the predetermined lowest liquid level, it indicates that the liquid in the cold energy storage tank 310 or the heat energy storage tank 210 is too little. The automatic liquid replenishment pump 440 works to pump the liquid in the liquid storage barrel 460 into the liquid storage tank 410. The liquid in the liquid storage tank 410 respectively enters the cold energy storage tank 310 or the heat energy storage tank 210. When the liquid in the liquid storage tank 410 reaches the predetermined highest liquid level, it indicates that the liquid in the cold energy storage tank 310 or the heat energy storage tank 210 is sufficient, and the automatic liquid replenishment pump 440 stops working. At the same time, the liquid replenishment flow switch 450 is used to monitor in real time whether there is sufficient liquid flow in the liquid replenishment path. If the liquid replenishment flow switch 450 fails to monitor liquid flow or the liquid flow is too low, it indicates that the external liquid storage barrel 460 lacks liquid. At this time, the automatic liquid replenishment pump 440 stops working, and a signal (for example, an alarm sound) can also be sent to remind the staff to replenish the liquid into the liquid storage barrel 460 in time. Among them, in order to facilitate real-time observation of the liquid level height in the liquid storage tank 410, a liquid level display 430 can be arranged outside the liquid storage tank 410. In order to filter the liquid replenished into the liquid storage tank 410, a third filter 470 can also be arranged between the liquid replenishment flow switch 450 and the liquid storage barrel 460. The third filter 470 can adopt a commonly used Y-type filter in the art.

[0062] Further, referring to Figure 5 and Figure 6 , Figure 5 It is a schematic diagram of the structure of the heat energy storage component 200 of the present invention. Figure 6This is a schematic structural diagram of the cold energy storage component 300 of the present invention. In some embodiments, in order to monitor the temperature of the liquid in the cold energy storage tank 310 or the thermal energy storage tank 210 in real time and keep the temperature of the liquid in the cold energy storage tank 310 or the thermal energy storage tank 210 at an appropriate temperature, the thermal energy storage component 200 further includes a first heating pipe 220 and a first temperature sensor 231 which are electrically connected. The first heating pipe 220 is arranged in the thermal energy storage tank 210, and the first temperature sensor 231 is arranged on the thermal energy storage tank 210. The temperature of the liquid in the thermal energy storage tank 210 is monitored in real time through the first temperature sensor 231. When the temperature is too low, the liquid in the thermal energy storage tank 210 is heated through the first heating pipe 220, so that the temperature of the liquid in the thermal energy storage tank 210 is kept constant at an appropriate high temperature. Similarly, the cold energy storage component 300 further includes a second heating pipe 320 and a third temperature sensor 331 which are electrically connected. The second heating pipe 320 is arranged in the cold energy storage tank 310, and the third temperature sensor 331 is arranged on the cold energy storage tank 310. The temperature of the liquid in the cold energy storage tank 310 is monitored in real time through the third temperature sensor 331. When the temperature is too low, the liquid in the cold energy storage tank 310 is heated through the second heating pipe 320, so that the temperature of the liquid in the cold energy storage tank 310 is kept constant at an appropriate low temperature.

[0063] Further, in some embodiments, in order to facilitate cutting off the corresponding passage to disassemble and assemble the battery cold plate after the test is completed, a first ball valve 281 is arranged between the first switching valve 271 and the liquid inlet of the first test box 51, a second ball valve 282 is arranged between the liquid outlet of the first test box 51 and the second switching valve 272, a third ball valve 381 is arranged between the sixth switching valve 371 and the liquid inlet of the second test box 52, and a fourth ball valve 382 is arranged between the liquid outlet of the second test box 52 and the seventh switching valve 372.

[0064] Further, in some embodiments, considering that impurities are likely to accumulate during the liquid circulation process, in order to filter these impurities, a first filter 290 is arranged between the second ball valve 282 and the second switching valve 272, and a second filter 390 is arranged between the fourth ball valve 382 and the seventh switching valve 372. Among them, both the first filter 290 and the second filter 390 can adopt the commonly used Y-type filter in the art.

[0065] Further, in some embodiments, in order to real-time monitor the flow rate, pressure and temperature at corresponding positions of the liquid supply circulation loop, and relieve pressure in a timely manner when the pressure in the liquid supply circulation loop is too high, so that the pressure of the liquid supply circulation loop is kept constant within a suitable range, the test system further includes a third switching valve 273, an eighth switching valve 373, a first flowmeter 250, a second flowmeter 350, a first pressure sensor 261, a second pressure sensor 262, a second temperature sensor 232, a third pressure sensor 361, a fourth pressure sensor 362 and a fourth temperature sensor 332, wherein:

[0066] One end of the third switching valve 273 is connected between the liquid supply port of the thermal energy storage tank 210 and the fifth switching valve 275, and the other end of the third switching valve 273 is connected between the fourth switching valve 274 and the liquid return port of the thermal energy storage tank 210. The first pressure sensor 261 is arranged between the thermal external circulation pump 240 and the first switching valve 271, the second pressure sensor 262 is arranged between the second switching valve 272 and the first filter 290, the first flowmeter 250 is arranged between the thermal external circulation pump 240 and the first pressure sensor 261, and the second temperature sensor 232 is arranged between the first filter 290 and the second pressure sensor 262.

[0067] One end of the eighth switching valve 373 is connected between the cold external circulation pump 340 and the ninth switching valve 374, and the other end of the eighth switching valve 373 is connected between the tenth switching valve 375 and the liquid return port of the cold energy storage tank 310. The third pressure sensor 361 is arranged between the cold external circulation pump 340 and the sixth switching valve 371, the fourth pressure sensor 362 is arranged between the second filter 390 and the seventh switching valve 372, the second flowmeter 350 is arranged between the cold external circulation pump 340 and the third pressure sensor 361, and the fourth temperature sensor 332 is arranged between the second filter 390 and the fourth pressure sensor 362.

[0068] The working principle of the present invention is generally as follows:

[0069] Preheat the liquid in the thermal energy storage tank 210 to a predetermined temperature in advance, and precool the liquid in the cold energy storage tank 310 to a predetermined temperature. Input a signal to start the hot and cold shock test. The test system receives the start signal, opens the first switching valve 271, the second switching valve 272, the sixth switching valve 371 and the seventh switching valve 372, and closes the fourth switching valve 274, the fifth switching valve 275, the ninth switching valve 374 and the tenth switching valve 375, and supplies high-temperature liquid through the thermal energy storage assembly 200 to perform a thermal shock on the battery cold plate in the first test chamber 51, and supplies low-temperature liquid through the cold energy storage assembly 300 to perform a cold shock on the battery cold plate in the second test chamber 52.

[0070] After a predetermined test time, a signal for switching between cold and heat shocks is input. The test system receives the first switching signal, closes the first switching valve 271 and the sixth switching valve 371, and opens the fifth switching valve 275 and the ninth switching valve 374. The high-temperature liquid in the loop pushes the low-temperature liquid in the loop back into the cold energy storage tank 310, and at the same time, the low-temperature liquid in the loop pushes the high-temperature liquid in the loop back into the heat energy storage tank 210. Subsequently, the second switching valve 272 and the seventh switching valve 372 are continuously closed, and the fourth switching valve 274 and the tenth switching valve 375 are opened, so that the high-temperature liquid loop is connected to the second test chamber 52, and the low-temperature liquid loop is connected to the first test chamber 51. The cold energy storage assembly 300 supplies low-temperature liquid to perform a cold shock on the battery cold plate in the first test chamber 51, and the heat energy storage assembly 200 supplies high-temperature liquid to perform a heat shock on the battery cold plate in the second test chamber 52.

[0071] After another predetermined test time, a signal for switching between cold and heat shocks is input again. The test system receives the second switching signal, closes the fifth switching valve 275 and the ninth switching valve 374, and opens the first switching valve 271 and the sixth switching valve 371. The high-temperature liquid in the loop pushes the low-temperature liquid in the loop back into the cold energy storage tank 310, and at the same time, the low-temperature liquid in the loop pushes the high-temperature liquid in the loop back into the heat energy storage tank 210. Subsequently, the fourth switching valve 274 and the tenth switching valve 375 are continuously closed, and the second switching valve 272 and the seventh switching valve 372 are opened, so that the high-temperature liquid loop is connected to the first test chamber 51, and the low-temperature liquid loop is connected to the second test chamber 52. The heat energy storage assembly 200 supplies high-temperature liquid to perform a heat shock on the battery cold plate in the first test chamber 51, and the cold energy storage assembly 300 supplies low-temperature liquid to perform a cold shock on the battery cold plate in the second test chamber 52. In this way, by regularly controlling the opening and closing of the corresponding switching valves, continuous cold and heat shocks can be performed on the battery cold plate in the first test chamber 51 or the battery cold plate in the second test chamber 52.

[0072] It can be understood that the above test start signal, predetermined test time, first switching signal, and second switching signal can all be set through a power control system (such as a commonly used PLC system (Programmable Logic Controller) in the art) electrically connected to the test system, so as to control the test system to automatically perform tests according to a predetermined test process through the power control system.

[0073] The above is only used to illustrate the technical solution of the present invention and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should all be covered within the scope of the claims of the present invention.

Claims

1. A new energy battery cold plate hot and cold shock test system, comprising a hot energy storage component and a cold energy storage component, wherein the hot energy storage component is used to provide high-temperature liquid, and the cold energy storage component is used to provide low-temperature liquid, characterized in that: Also included are a first test box and a second test box for placing a cold plate of a battery to be tested; The thermal energy storage assembly is connected to the first test box and the second test box respectively through a pipeline in a disconnectable manner; the cold energy storage assembly is connected to the first test box and the second test box respectively through a pipeline in a disconnectable manner.

2. A new energy battery cold plate thermal shock test system according to claim 1, characterized in that: The first test box and the second test box are both provided with a liquid inlet and a liquid outlet; The thermal energy storage assembly includes a thermal energy storage tank, and the cold energy storage assembly includes a cold energy storage tank. Both the thermal energy storage tank and the cold energy storage tank are provided with a liquid supply port and a liquid return port. The liquid supply port of the thermal energy storage tank is connected to the liquid inlet of the first test box and the liquid inlet of the second test box respectively through a pipeline in a switchable manner, and the liquid return port of the thermal energy storage tank is connected to the liquid outlet of the first test box and the liquid outlet of the second test box respectively through a pipeline in a switchable manner. The liquid supply port of the cold energy storage tank is connected to the liquid inlet of the first test box and the liquid inlet of the second test box respectively through a pipeline in a switchable manner, and the liquid return port of the cold energy storage tank is connected to the liquid outlet of the first test box and the liquid outlet of the second test box respectively through a pipeline in a switchable manner.

3. A new energy battery cold plate thermal shock test system according to claim 2, characterized in that: The thermal energy storage assembly further includes a first heating tube and a first temperature sensor which are electrically connected, wherein the first heating tube is arranged in the thermal energy storage tank, and the first temperature sensor is arranged on the thermal energy storage tank; and / or The cold energy storage assembly includes a second heating tube and a third temperature sensor which are electrically connected. The second heating tube is arranged in the cold energy storage tank, and the third temperature sensor is arranged on the cold energy storage tank.

4. A new energy battery cold plate thermal shock test system according to claim 2, characterized in that: Also includes: A refrigeration component, the refrigeration component includes a compressor, a condenser, a drying filter, an expansion valve, a first evaporator and a second evaporator connected in sequence through a refrigerant channel, the solution outlet of the cold energy storage tank is communicated with the heat exchange inlet of the second evaporator, the heat exchange outlet of the second evaporator is communicated with the solution inlet of the cold energy storage tank, the solution outlet of the hot energy storage tank is communicated with the heat exchange inlet of the first evaporator, and the heat exchange outlet of the first evaporator is communicated with the solution inlet of the hot energy storage tank.

5. A new energy battery cold plate thermal shock test system according to claim 2, characterized in that: Also includes: An automatic refilling component, the automatic refilling component includes a liquid storage tank, a liquid level switch, an automatic refilling pump, a liquid storage barrel and a refilling flow switch, the liquid storage tank is respectively connected to the hot energy storage tank and the cold energy storage tank, the refilling flow switch is arranged in the liquid storage tank, the liquid storage tank is connected to the liquid storage barrel, the liquid storage barrel is used to store the corresponding liquid, the automatic refilling pump is arranged between the liquid storage barrel and the liquid storage tank, and the refilling flow switch is arranged between the automatic refilling pump and the liquid storage barrel.

6. A new energy battery cold plate thermal shock test system according to claim 4, characterized in that: Also includes: A heat internal circulation pump, the heat internal circulation pump is arranged between the solution outlet of the heat storage tank and the heat exchange inlet of the first evaporator; and / or A heat external circulation pump, the heat external circulation pump is arranged between the liquid supply port of the heat storage tank and the liquid inlet of the first test box; and / or A cold internal circulation pump, the cold internal circulation pump being arranged between the solution outlet of the cold energy storage tank and the heat exchange inlet of the second evaporator; and / or A cold external circulation pump is arranged between the liquid supply port of the cold energy storage tank and the liquid inlet of the second test box.

7. A new energy battery cold plate thermal shock test system according to claim 6, characterized in that: The pipeline is provided with a first switching valve, a second switching valve, a sixth switching valve, a seventh switching valve, a fourth switching valve, a fifth switching valve, a ninth switching valve and a tenth switching valve, wherein: The first switching valve is arranged between the liquid supply port of the hot energy storage tank and the liquid inlet of the first test box; the second switching valve is arranged between the liquid outlet of the first test box and the liquid return port of the hot energy storage tank; the sixth switching valve is arranged between the liquid supply port of the cold energy storage tank and the liquid inlet of the second test box; the seventh switching valve is arranged between the liquid outlet of the second test box and the liquid return port of the cold energy storage tank; One end of the fourth switching valve is connected between the second switching valve and the liquid return port of the hot energy storage tank, and the other end is connected between the liquid outlet of the second test box and the seventh switching valve; one end of the fifth switching valve is connected between the liquid supply port of the hot energy storage tank and the first switching valve, and the other end is connected between the liquid inlet of the second test box and the sixth switching valve; one end of the ninth switching valve is connected between the liquid supply port of the cold energy storage tank and the sixth switching valve, and the other end is connected between the liquid inlet of the first test box and the first switching valve; one end of the tenth switching valve is connected between the second switching valve and the liquid outlet of the first test box, and the other end is connected between the seventh switching valve and the liquid return port of the cold energy storage tank.

8. A new energy battery cold plate thermal shock test system according to claim 7, characterized in that: Also includes: A first pressure sensor, a second pressure sensor and a third switching valve, wherein one end of the third switching valve is connected between the liquid supply port of the thermal energy storage tank and the fifth switching valve, and the other end is connected between the fourth switching valve and the liquid return port of the thermal energy storage tank, the first pressure sensor is arranged between the liquid supply port of the thermal energy storage tank and the first switching valve, and the second pressure sensor is arranged between the second switching valve and the liquid outlet of the first test box; and / or a third pressure sensor, a fourth pressure sensor and an eighth switching valve, one end of the eighth switching valve is connected between the liquid supply port of the cold energy storage tank and the ninth switching valve, and the other end is connected between the tenth switching valve and the liquid return port of the cold energy storage tank, the third pressure sensor is arranged between the liquid supply port of the cold energy storage tank and the sixth switching valve, and the fourth pressure sensor is arranged between the liquid outlet of the second test box and the seventh switching valve.

9. A new energy battery cold plate thermal shock test system according to claim 7, characterized in that: Also includes: a first ball valve and a second ball valve, wherein the first ball valve is disposed between the first switching valve and the liquid inlet of the first test box, and the second ball valve is disposed between the liquid outlet of the first test box and the second switching valve; and / or A third ball valve and a fourth ball valve, wherein the third ball valve is arranged between the sixth switching valve and the liquid inlet of the second test box, and the fourth ball valve is arranged between the liquid outlet of the second test box and the seventh switching valve.

10. A new energy battery cold plate thermal shock test system according to claim 8, characterized in that: Also includes: a second temperature sensor, the second temperature sensor being disposed between the first filter and the second pressure sensor; and / or A fourth temperature sensor is disposed between the second filter and the fourth pressure sensor.

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