Energy storage direct cooling plate test system and test method

Abstract

The invention discloses an energy storage direct cooling plate test system and a test method. The test system comprises a battery pack simulation module which is used for adjusting the temperature of the battery pack simulation module so as to simulate different working states of different types of battery packs, and transmitting the simulated battery pack types to a control module; the temperature sensor array is used for transmitting each temperature data to the control module; the control module is used for determining the average value of the temperatures of a plurality of different positions between the battery pack simulation module and the energy storage direct cooling plate according to each piece of temperature data, controlling the working state of the cooling module according to the average value, and controlling the temperature of the battery pack simulation module after the cooling module works for a first preset duration. And re-determining an average value of the temperatures of a plurality of different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluating the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures of the plurality of different positions and a preset temperature corresponding to the simulated battery pack type. According to the invention, the test precision of the energy storage direct cooling plate is improved, and the test process is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of direct cooling plate testing, and particularly to a testing system and method for an energy storage direct cooling plate. Background Art

[0002] With the increasing global demand for renewable energy, the importance of energy storage technology in the energy system has become increasingly prominent. As a core component, energy storage batteries have the characteristics of high energy density and fast charging and discharging, but heat accumulation is likely to occur under high load conditions, affecting the performance and lifespan of the batteries.

[0003] In existing energy storage battery cooling solutions, a direct cooling module that cools the energy storage battery by directly contacting the battery pack is generally adopted. The energy storage direct cooling plate in the direct cooling module is a key device participating in the cooling. Therefore, testing the cooling effect of the energy storage direct cooling plate is crucial. In the prior art, the testing of the energy storage direct cooling plate is mainly manual, and the testing process is cumbersome and the testing accuracy is relatively low. Summary of the Invention

[0004] The present invention provides a testing system and method for an energy storage direct cooling plate to improve the testing accuracy of the energy storage direct cooling plate and simplify the testing process.

[0005] According to one aspect of the present invention, a testing system for an energy storage direct cooling plate is provided. The testing system for the energy storage direct cooling plate includes:

[0006] A temperature sensor array, a battery pack simulation module, a cooling module, and a control module;

[0007] The battery pack simulation module is electrically connected to the control module. The battery pack simulation module is used to adjust its own temperature to simulate different working states of different types of battery packs and transmit the simulated battery pack type to the control module;

[0008] The temperature sensor array is arranged between the battery pack simulation module and the energy storage direct cooling plate, and the temperature sensor array is electrically connected to the control module. The temperature sensor array is used to obtain the temperature data at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate in real time and transmit each temperature data to the control module;

[0009] The cooling module is electrically connected to the control module. The cooling module is used to cool the battery pack simulation module through the energy storage direct cooling plate. The control module is used to determine the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate according to each temperature data, control the working state of the cooling module based on the average value of the temperatures at multiple different positions, and after the cooling module works for the first preset duration, re-determine the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluate the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type.

[0010] Further, the control module is used to:

[0011] After the cooling module works for the first preset duration, if the re-determined average value of the temperatures at multiple different positions is less than or equal to the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements;

[0012] If the re-determined average value of the temperatures at multiple different positions is greater than the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0013] Further, the cooling module is connected to the energy storage direct cooling plate through a connecting pipe, and a refrigerant is provided in the connecting pipe;

[0014] The control module is used to:

[0015] If the average value of the temperatures at multiple different positions is greater than or equal to the first preset temperature, control the cooling module to enter the refrigeration mode;

[0016] If the average value of the temperatures at multiple different positions is greater than or equal to the second preset temperature and less than the first preset temperature, control the cooling module to enter the low temperature mode; wherein, the flow rate of the refrigerant in the refrigeration mode is greater than the flow rate of the refrigerant in the low temperature mode and / or the temperature of the refrigerant in the refrigeration mode is greater than the temperature of the refrigerant in the low temperature mode;

[0017] If the average value of the temperatures at multiple different positions is less than the second preset temperature, control the cooling module to stop working; wherein, the first preset temperature is greater than the second preset temperature.

[0018] Further, the control module is also used to:

[0019] Determine the temperature difference according to the maximum temperature and the minimum temperature in the temperature data at multiple different positions;

[0020] Control the working state of the cooling module according to the temperature difference, and after the cooling module works for the first preset duration, re-determine the average value and the temperature difference of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluate the cooling performance of the energy storage direct cooling plate according to the re-determined average value and temperature difference of the temperatures at multiple different positions and the preset temperature and preset temperature difference corresponding to the simulated battery pack type.

[0021] Further, the control module is used for:

[0022] After the cooling module works for the first preset duration, if the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, and the temperature difference is less than or equal to the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements;

[0023] If the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type, or the temperature difference is greater than the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0024] Further, the energy storage direct cooling plate test system further includes:

[0025] An optical detection module;

[0026] The optical detection module is electrically connected to the control module; the optical detection module is used to take pictures of the surface of the energy storage direct cooling plate in real time, generate image data, and transmit the image data to the control module;

[0027] The control module is used to evaluate the anti-condensation performance of the energy storage direct cooling plate according to the image data.

[0028] Further, the battery pack simulation module includes:

[0029] A heating film and a regulator;

[0030] A temperature sensor array is arranged between the heating film and the energy storage direct cooling plate, and the regulator is used to control the temperature of the heating film to simulate different working states of different battery packs, and transmit the simulated battery pack type to the control module.

[0031] Further, the cooling module includes:

[0032] A liquid replenishing tank, a gas-liquid separator, a compressor, a condenser, an expansion valve and a waste liquid tank;

[0033] The first end of the energy storage direct cooling plate is connected to the first end of the gas-liquid separator, the second end of the gas-liquid separator is connected to the first end of the compressor, the second end of the compressor is connected to the first end of the condenser, the second end of the condenser is connected to the first end of the expansion valve, the second end of the expansion valve is connected to the second end of the energy storage direct cooling plate, and the first end of the energy storage direct cooling plate is connected to the waste liquid tank; the liquid replenishing tank is connected to the first end of the gas-liquid separator;

[0034] The control module is used to send control signals to the compressor and the condenser according to the average value of the temperatures at multiple different positions to control the working states of the compressor and the condenser.

[0035] Furthermore, the cooling module further includes:

[0036] A temperature acquisition unit and a pressure acquisition unit;

[0037] The temperature acquisition unit and the pressure acquisition unit are electrically connected to the control module; the temperature acquisition unit is used to obtain the temperature of the refrigerant in the connecting pipeline in the cooling module in real time and transmit the refrigerant temperature to the control module, and the pressure acquisition unit is used to obtain the pressure of the refrigerant in the connecting pipeline of the cooling module in real time and transmit the refrigerant pressure to the control module;

[0038] The control module is used to judge whether there is an abnormality in the operation of the cooling module according to the refrigerant temperature and the refrigerant pressure.

[0039] Furthermore, the temperature acquisition unit includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor;

[0040] The pressure acquisition unit includes a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor;

[0041] The first temperature sensor and the first pressure sensor are arranged between the compressor and the condenser, the second temperature sensor and the second pressure sensor are arranged between the condenser and the expansion valve, the third temperature sensor and the third pressure sensor are arranged between the expansion valve and the energy storage direct cooling plate, and the fourth temperature sensor and the fourth pressure sensor are arranged on the side of the energy storage direct cooling plate close to the gas-liquid separator.

[0042] Furthermore, the temperature sensor array includes a plurality of temperature sensors;

[0043] The plurality of temperature sensors are uniformly arranged between the battery pack simulation module and the energy storage direct cooling plate.

[0044] According to another aspect of the present invention, a method for testing an energy storage direct cooling plate is provided. The method for testing an energy storage direct cooling plate includes:

[0045] The battery pack simulation module adjusts its own temperature, simulates the battery pack in different working states, and transmits the simulated battery pack type to the control module;

[0046] The temperature sensor array acquires the temperature data at different positions between the battery pack simulation module and the energy storage direct cooling plate in real time, and transmits each temperature data to the control module;

[0047] The control module determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate according to each temperature data, controls the working state of the cooling module according to the average value of the temperatures at different positions, and after the cooling module works for a first preset duration, re-determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluates the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at different positions and the preset temperature corresponding to the simulated battery pack type.

[0048] The energy storage direct cooling plate test system provided by the embodiments of the present invention determines the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, controls the working state of the cooling module according to the average value of the temperatures at multiple different positions, and after the cooling module works for a first preset duration, evaluates the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type. Compared with the prior art in which the energy storage direct cooling plate can only be tested by manual measurement, the test accuracy of the energy storage direct cooling plate is improved and the test process is simplified.

[0049] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0051] Figure 1 is a schematic structural diagram of an energy storage direct cooling plate test system provided by an embodiment of the present invention;

[0052] Figure 2 is a schematic structural diagram of another energy storage direct cooling plate test system provided by an embodiment of the present invention;

[0053] Figure 3It is a schematic structural diagram of another energy storage direct cooling plate test system provided according to an embodiment of the present invention;

[0054] Figure 4 It is a flowchart of a method for testing an energy storage direct cooling plate provided according to an embodiment of the present invention. Detailed implementation manners

[0055] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data used may be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0057] An embodiment of the present invention provides an energy storage direct cooling plate test system. Figure 1 It is a schematic structural diagram of an energy storage direct cooling plate test system provided according to an embodiment of the present invention. Refer to Figure 1 , the energy storage direct cooling plate test system includes:

[0058] A temperature sensor array 1, a battery pack simulation module 2, a cooling module 3, and a control module 4;

[0059] The battery pack simulation module 2 is electrically connected to the control module 4. The battery pack simulation module 2 is used to adjust its own temperature to simulate different working states of different types of battery packs, and transmit the simulated battery pack type to the control module 4;

[0060] The temperature sensor array 1 is arranged between the battery pack simulation module 2 and the energy storage direct cooling plate 5, and the temperature sensor array 1 is electrically connected to the control module 4. The temperature sensor array 1 is used to obtain the temperature data at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5 in real time, and transmit each temperature data to the control module 4;

[0061] The cooling module 3 is electrically connected to the control module 4. The cooling module 3 is used to cool the battery pack simulation module 2 through the energy storage direct cooling plate 5. The control module 4 is used to determine the average value of the temperatures at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5 according to each temperature data, control the working state of the cooling module 3 according to the average value of the temperatures at multiple different positions, and after the cooling module 3 works for a first preset duration, re-determine the average value of the temperatures at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5, and evaluate the cooling performance of the energy storage direct cooling plate 5 according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type.

[0062] Wherein, the temperature sensor array 1 may include multiple temperature sensors. The multiple temperature sensors may be evenly arranged between the battery pack simulation module 2 and the energy storage direct cooling plate 5, or may also be arranged according to the design of the flow channels in the energy storage direct cooling plate 5. The embodiments of the present invention do not limit this. Exemplarily, the temperature sensor may be a thermocouple temperature sensor, an infrared temperature sensor, etc.

[0063] Specifically, before testing the energy storage direct cooling plate 5, it is necessary to first set the temperature data corresponding to different types of battery packs in different working states in the battery pack simulation module 2. And when testing the energy storage direct cooling plate 5, the staff determines the simulated battery pack type and the working state of the battery pack through the battery pack simulation module 2, so that the battery pack simulation module 2 adjusts its own temperature according to the selected battery pack type and the working state of the battery pack, and transmits the simulated battery pack type to the control module 4. Exemplarily, different working states of the battery pack may include charge and discharge cycle working states, working states under different load working conditions, working states at different operating temperatures, etc. At the same time, control the cooling module 3 to start working, and turn on the temperature sensor array 1 to obtain the temperature data at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5 in real time, and transmit each temperature data detected by the temperature sensor array 1 to the control module 4. Among them, by obtaining the temperature data at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5, the temperature data at different positions around the battery cell group is simulated and obtained.

[0064] After the control module 4 receives the battery pack type simulated under the current test environment sent by the simulated battery module 2 and the temperature data at multiple different positions obtained by the temperature sensor array 1, it calculates the average value of the temperatures at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5 based on the temperature data at multiple different positions, and controls the working state of the cooling module 3 according to the average value of the temperatures at multiple different positions. Exemplarily, if the average value of the temperatures at multiple different positions is greater than or equal to the first preset temperature, the cooling module is controlled to enter a refrigeration mode with a stronger cooling effect; if the average value of the temperatures at multiple different positions is greater than or equal to the second preset temperature and less than the first preset temperature, the cooling module is controlled to enter a low temperature mode with a weaker cooling effect; if the average value of the temperatures at multiple different positions is less than the second preset temperature, the cooling module is controlled to stop working. After the cooling module 3 works for the first preset duration, the average value of the temperatures at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5 is re-determined, and the re-determined average value of the temperatures at multiple different positions is compared with the preset temperature corresponding to the simulated battery pack type. If the re-determined average value of the temperatures at multiple different positions is less than or equal to the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate 5 meets the requirements; if the re-determined average value of the temperatures at multiple different positions is greater than the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0065] The energy storage direct cooling plate test system provided by the embodiment of the present invention determines the average value of the temperatures at multiple different positions between the battery pack simulation module 2 and the energy storage direct cooling plate 5, controls the working state of the cooling module 3 according to the average value of the temperatures at multiple different positions, and after the cooling module 3 works for the first preset duration, evaluates the cooling performance of the energy storage direct cooling plate 5 according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type. Compared with the prior art in which the energy storage direct cooling plate 5 can only be tested by manual measurement, the test accuracy of the energy storage direct cooling plate 5 is improved and the test process is simplified.

[0066] Further, the control module is used for:

[0067] After the cooling module works for the first preset duration, if the re-determined average value of the temperatures at multiple different positions is less than or equal to the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements;

[0068] If the re-determined average value of the temperatures at multiple different positions is greater than the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0069] Specifically, if after the cooling module has been operating for a first preset duration, the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, it indicates that the energy storage direct cooling plate can effectively cool the current type of battery pack. Consequently, it can be determined that the cooling performance of the energy storage direct cooling plate meets the requirements. Exemplarily, the average value of the temperatures at multiple different positions re-determined can be compared with the preset temperature corresponding to the simulated battery pack type in real time. When the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, the cooling time of the energy storage direct cooling plate can be determined, and then the cooling speed of the energy storage direct cooling plate can be determined. Furthermore, each energy storage direct cooling plate can be further evaluated based on the cooling speeds of different energy storage direct cooling plates. If the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type, it indicates that the energy storage direct cooling plate cannot effectively cool the current type of battery pack. Consequently, it can be determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements. At this time, the staff needs to be reminded to optimize the energy storage direct cooling plate. Exemplarily, the layout of the cooling pipes inside the energy storage direct cooling plate can be optimized, or the manufacturing material of the energy storage direct cooling plate can be optimized. By optimizing the energy storage direct cooling plate, the thermal management efficiency of the energy storage battery system is improved, the overheating phenomenon of the battery pack is reduced, the service life of the battery is extended, the safety and reliability of the energy storage battery system are enhanced, and it is ensured that the energy storage battery system can operate efficiently and stably in practical applications. Among them, high thermal conductivity materials can be used to prepare the energy storage direct cooling plate, such as copper, aluminum alloy, etc., to ensure that heat is quickly transferred from the battery to the coolant. Exemplarily, the coolant can be R134a coolant or R410A coolant. The embodiments of the present invention do not limit this.

[0070] Further, referring to Figure 1 , the cooling module 3 is connected to the energy storage direct cooling plate 5 through the connecting pipe 01, and a coolant is provided inside the connecting pipe 01;

[0071] The control module is used for:

[0072] If the average value of the temperatures at multiple different positions is greater than or equal to the first preset temperature, then control the cooling module 3 to enter the refrigeration mode;

[0073] If the average value of the temperatures at multiple different positions is greater than or equal to the second preset temperature and less than the first preset temperature, then control the cooling module 3 to enter the low-temperature mode; wherein, the flow rate of the coolant in the refrigeration mode is greater than the flow rate of the coolant in the low-temperature mode and / or the temperature of the coolant in the refrigeration mode is greater than the temperature of the coolant in the low-temperature mode;

[0074] If the average value of the temperatures at multiple different positions is less than the second preset temperature, then control the cooling module 3 to stop working; wherein, the first preset temperature is greater than the second preset temperature.

[0075] Specifically, if the average value of the temperatures at multiple different positions is greater than or equal to the first preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is relatively high in this mode. Then, the cooling module 3 is controlled to enter the refrigeration mode with better cooling effect. Exemplarily, at this time, the flow rate of the refrigerant in the connecting pipe 01 can be increased, and at the same time, the temperature of the refrigerant can be decreased. If the average value of the temperatures at multiple different positions is greater than or equal to the second preset temperature and less than the first preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is on the high side in this mode. Then, the cooling module 3 is controlled to enter the low-temperature mode with moderate cooling effect. Exemplarily, at this time, the flow rate of the refrigerant in the connecting pipe 01 can be increased, or the temperature of the refrigerant can be decreased. If the average value of the temperatures at multiple different positions is less than the second preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is relatively low in this mode, and at this time, there is no need to control the cooling module 3 to work. Among them, the first preset temperature and the second preset temperature can be set according to the actual situation, and the embodiments of the present invention do not limit this. Exemplarily, the first preset temperature is 35 °C, and the second preset temperature is 28 °C.

[0076] Furthermore, the control module is further configured to:

[0077] Determine the temperature difference based on the maximum temperature and the minimum temperature in the temperature data at multiple different positions;

[0078] And control the working state of the cooling module according to the temperature difference. After the cooling module works for the first preset duration, re-determine the average value and the temperature difference of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluate the cooling performance of the energy storage direct cooling plate according to the re-determined average value and temperature difference of the temperatures at multiple different positions and the preset temperature and the preset temperature difference corresponding to the simulated battery pack type.

[0079] Specifically, first, determine the temperature difference based on the maximum temperature and the minimum temperature in the temperature data at multiple different positions, and control the working state of the cooling module according to the temperature difference. Exemplarily, if the temperature difference is greater than the first preset difference, it indicates that the refrigerant in the energy storage direct cooling plate is seriously insufficient. At this time, it is necessary to control the cooling module to increase the flow rate of the refrigerant to relieve the phenomenon of insufficient refrigerant in the energy storage direct cooling plate. If the temperature difference is less than or equal to the first preset difference, it is necessary to control the cooling module to maintain the current working state. After the cooling module works for the first preset duration, if the re-determined average value of the temperatures at multiple different positions is less than or equal to the preset temperature corresponding to the simulated battery pack type, and the temperature difference is less than or equal to the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements. If the re-determined average value of the temperatures at multiple different positions is greater than the preset temperature corresponding to the simulated battery pack type, or the temperature difference is greater than the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0080] Further, the control module is configured to:

[0081] After the cooling module has been operating for a first preset duration, if the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, and the temperature difference is less than or equal to the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements;

[0082] If the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type, or the temperature difference is greater than the preset temperature difference, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

[0083] Specifically, after the cooling module has been operating for a first preset duration, if the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, and the temperature difference is less than or equal to the preset temperature difference, it indicates that the energy storage direct cooling plate can effectively cool the current type of battery pack and take into account any heat generation positions of the current type of battery pack, then it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements; if the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type and the temperature difference is less than or equal to the preset temperature difference, it indicates that the heat dissipation material used to make the energy storage direct cooling plate is poor and cannot effectively cool the current type of battery pack, and thus it can be determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements. At this time, the staff needs to be reminded to optimize the heat dissipation material used to make the energy storage direct cooling plate; if the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type and the temperature difference is greater than the preset temperature difference, it indicates that the energy storage direct cooling plate cannot take into account any heat generation position of the current type of battery pack. At this time, the layout of the cooling pipes inside the energy storage direct cooling plate needs to be optimized; if the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type and the temperature difference is greater than the preset temperature difference, it indicates that both the heat dissipation material used to make the energy storage direct cooling plate and the layout of the cooling pipes inside the energy storage direct cooling plate do not meet the requirements. At this time, the staff needs to be reminded to re-design the energy storage direct cooling plate.

[0084] Further, Figure 2 is a schematic structural diagram of another energy storage direct cooling plate test system provided according to an embodiment of the present invention. Refer to Figure 2 and the energy storage direct cooling plate test system further includes:

[0085] an optical detection module 6;

[0086] The optical detection module 6 is electrically connected to the control module 4; the optical detection module 6 is configured to take pictures of the surface of the energy storage direct cooling plate 5 in real time, generate image data, and transmit the image data to the control module 4;

[0087] The control module 4 is used to evaluate the anti-condensation performance of the energy storage direct cooling plate 5 according to the image data.

[0088] Specifically, the optical detection device 6 takes pictures of the surface of the energy storage direct cooling plate 5 in real time and transmits the generated image data to the control module 4. The control module 4 determines whether there are abnormal phenomena such as frosting, icing, and dripping on the surface of the energy storage direct cooling plate 5 according to the received image data. If abnormal phenomena such as frosting, icing, and dripping are detected on the surface of the energy storage direct cooling plate 5, it indicates that the anti-condensation performance of the energy storage direct cooling plate 5 is poor. At this time, the staff needs to be reminded to optimize the energy storage direct cooling plate 5 to improve its anti-condensation performance; if no abnormal phenomena such as frosting, icing, and dripping are detected on the surface of the energy storage direct cooling plate 5, it indicates that the anti-condensation performance of the energy storage direct cooling plate 5 is good.

[0089] Furthermore, Figure 3 is a schematic structural diagram of another energy storage direct cooling plate test system provided according to an embodiment of the present invention. Refer to Figure 3 , the battery pack simulation module includes:

[0090] a heating film 21 and a regulator 22;

[0091] A temperature sensor array 1 is arranged between the heating film 21 and the energy storage direct cooling plate 5. The regulator 22 is used to control the temperature of the heating film 21 to simulate different working states of different battery packs and transmit the simulated battery pack type to the control module 4.

[0092] Specifically, before testing the energy storage direct cooling plate 5, the temperature data corresponding to different types of battery packs in different working states need to be set in the regulator 22 first. And when testing the energy storage direct cooling plate 5, the staff determines the simulated battery pack type and the working state of the battery pack through the regulator 22 to control the heating film 21 to adjust its own temperature according to the selected battery pack type and the working state of the battery pack, and transmit the simulated battery pack type to the control module 4.

[0093] Furthermore, continue to refer to Figure 3 , the cooling module includes:

[0094] a liquid replenishing tank 31, a gas-liquid separator 32, a compressor 33, a condenser 34, an expansion valve 35, and a waste liquid tank 36;

[0095] The first end of the energy storage direct cooling plate 5 is connected to the first end of the gas-liquid separator 32, the second end of the gas-liquid separator 32 is connected to the first end of the compressor 33, the second end of the compressor 33 is connected to the first end of the condenser 34, the second end of the condenser 34 is connected to the first end of the expansion valve 35, the second end of the expansion valve 35 is connected to the second end of the energy storage direct cooling plate 5, and the first end of the energy storage direct cooling plate 5 is connected to the waste liquid tank 36; the liquid replenishing tank 31 is connected to the first end of the gas-liquid separator 32;

[0096] The control module 4 is used to send control signals to the compressor 33 and the condenser 34 according to the average value of the temperatures at multiple different positions, so as to control the operating states of the compressor 33 and the condenser 34.

[0097] Specifically, if the average value of the temperatures at multiple different positions is greater than or equal to the first preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is relatively high in this mode. Then, the cooling module is controlled to enter the refrigeration mode with better cooling effect. Exemplarily, at this time, a first flow rate control signal can be sent to the compressor 33 to increase the flow rate of the refrigerant in the connecting pipe 01, and at the same time, a first temperature control signal can be sent to the condenser 34 to lower the temperature of the refrigerant. If the average value of the temperatures at multiple different positions is greater than or equal to the second preset temperature and less than the first preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is on the high side in this mode. Then, the cooling module is controlled to enter the low temperature mode with moderate cooling effect. Exemplarily, at this time, a second flow rate control signal can be sent to the compressor 33 to increase the flow rate of the refrigerant in the connecting pipe 01, where the first flow rate control signal and the second flow rate control signal can be set to be the same or different; or a second temperature control signal can be sent to the condenser 34 to lower the temperature of the refrigerant, where the first temperature control signal and the second temperature control signal can be set to be the same or different. If the average value of the temperatures at multiple different positions is less than the second preset temperature, it indicates that the heat dissipation of the battery pack simulation module 2 is relatively low in this mode. At this time, the compressor 33 and the condenser 34 in the cooling module are controlled to stop working.

[0098] Furthermore, the cooling module further includes:

[0099] a temperature acquisition unit and a pressure acquisition unit;

[0100] The temperature acquisition unit and the pressure acquisition unit are electrically connected to the control module. The temperature acquisition unit is used to obtain the temperature of the refrigerant in the connecting pipe in the cooling module in real time and transmit the refrigerant temperature to the control module. The pressure acquisition unit is used to obtain the pressure of the refrigerant in the connecting pipe of the cooling module in real time and transmit the refrigerant pressure to the control module;

[0101] The control module is used to judge whether there is an abnormality in the operation of the cooling module according to the refrigerant temperature and the refrigerant pressure.

[0102] Specifically, if the difference in the refrigerant temperatures at different positions in the connecting pipe of the cooling module obtained by the temperature acquisition unit is relatively large and / or the difference in the refrigerant pressures at different positions in the connecting pipe of the cooling module obtained by the pressure acquisition unit is relatively large, it can be judged that there is an abnormality in the operation of the cooling module. The on-site staff needs to be reminded to repair the cooling module, and the energy storage direct cooling plate can be tested again when the cooling module operates normally.

[0103] Further, continue to refer to Figure 3 The temperature acquisition unit includes a first temperature sensor T1, a second temperature sensor T2, a third temperature sensor T3, and a fourth temperature sensor T4;

[0104] The pressure acquisition unit includes a first pressure sensor P1, a second pressure sensor P2, a third pressure sensor P3, and a fourth pressure sensor P4;

[0105] The first temperature sensor T1 and the first pressure sensor P1 are arranged between the compressor 33 and the condenser 34, the second temperature sensor T2 and the second pressure sensor P2 are arranged between the condenser 34 and the expansion valve 35, the third temperature sensor T3 and the third pressure sensor P3 are arranged between the expansion valve 35 and the energy storage direct cooling plate 5, and the fourth temperature sensor T4 and the fourth pressure sensor P4 are arranged on the side of the energy storage direct cooling plate 5 close to the gas-liquid separator 32.

[0106] Specifically, the first temperature sensor T1 and the first pressure sensor P1 can be used to respectively and real-time detect the temperature and the flow rate of the refrigerant between the compressor 33 and the condenser 34, the second temperature sensor T2 and the second pressure sensor P2 can be used to respectively and real-time detect the temperature and the flow rate of the refrigerant between the condenser 34 and the expansion valve 35, the third temperature sensor T3 and the third pressure sensor P3 can be used to respectively and real-time detect the temperature and the flow rate of the refrigerant between the expansion valve 35 and the energy storage direct cooling plate 5, and the fourth temperature sensor T4 and the fourth pressure sensor P4 can be used to respectively and real-time detect the temperature and the flow rate of the refrigerant on the side of the energy storage direct cooling plate 5 close to the gas-liquid separator 32. If the detection data of a certain temperature sensor or a certain pressure sensor is different from and differs greatly from the detection data of other sensors of the same type, it can be determined that there is an abnormality in the operation at the position corresponding to the sensor, and the on-site staff needs to be reminded to repair the cooling module. Exemplarily, if the temperature data detected by the first temperature sensor T1 is much greater than the temperature data detected by other temperature sensors, the on-site staff can check the reason for the abnormal operation near the compressor 33 or the condenser 34, which improves the troubleshooting efficiency.

[0107] Further, the temperature sensor array 1 includes a plurality of temperature sensors;

[0108] The plurality of temperature sensors are uniformly arranged between the battery pack simulation module and the energy storage direct cooling plate 5.

[0109] Specifically, by uniformly arranging the plurality of temperature sensors in the temperature sensor array 1 between the battery pack simulation module and the energy storage direct cooling plate 5, the temperature between the battery pack simulation module and the energy storage direct cooling plate 5 can be comprehensively detected, making the detected temperature data more objective, and thus the energy storage direct cooling plate 5 can be evaluated more accurately.

[0110] An embodiment of the present invention provides a method for testing an energy storage direct cooling plate. Figure 4 It is a flowchart of a method for testing an energy storage direct cooling plate provided according to an embodiment of the present invention. Refer to Figure 4 , the method for testing an energy storage direct cooling plate includes:

[0111] S110. The battery pack simulation module adjusts its own temperature to simulate the battery pack in different working states, and transmits the simulated battery pack type to the control module.

[0112] S120. The temperature sensor array obtains the temperature data at different positions between the battery pack simulation module and the energy storage direct cooling plate in real time, and transmits each temperature data to the control module.

[0113] S130. The control module determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate according to each temperature data, controls the working state of the cooling module according to the average value of the temperatures at different positions, and after the cooling module works for a first preset duration, re-determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluates the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at different positions and the preset temperature corresponding to the simulated battery pack type.

[0114] The energy storage direct cooling plate test system provided by the embodiment of the present invention determines the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, controls the working state of the cooling module according to the average value of the temperatures at multiple different positions, and after the cooling module works for a first preset duration, evaluates the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type. Compared with the prior art in which the energy storage direct cooling plate can only be tested by manual measurement, the test accuracy of the energy storage direct cooling plate is improved, and the test process is simplified.

[0115] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is made herein.

[0116] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A direct cooling plate test system for energy storage, characterized in that, Including: A temperature sensor array, a battery pack simulation module, a cooling module, and a control module; The battery pack simulation module is electrically connected to the control module. The battery pack simulation module is used to adjust its own temperature to simulate different working states of different types of battery packs and transmit the simulated battery pack type to the control module; The temperature sensor array is arranged between the battery pack simulation module and the energy storage direct cooling plate, and the temperature sensor array is electrically connected to the control module. The temperature sensor array is used to obtain the temperature data at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate in real time and transmit each temperature data to the control module; The cooling module is electrically connected to the control module. The cooling module is used to cool the battery pack simulation module through the energy storage direct cooling plate; The control module is used to determine the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate according to each temperature data, control the working state of the cooling module according to the average value of the temperatures at multiple different positions, and after the cooling module works for a first preset duration, re-determine the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluate the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at multiple different positions and the preset temperature corresponding to the simulated battery pack type.

2. The energy storage direct cooling plate test system according to claim 1, wherein The control module is used for: After the cooling module works for a first preset duration, if the re-determined average value of the temperatures at multiple different positions is less than or equal to the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate meets the requirements; If the re-determined average value of the temperatures at multiple different positions is greater than the preset temperature corresponding to the simulated battery pack type, it is determined that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

3. The energy storage direct cooling plate test system according to claim 1, wherein The cooling module is connected to the energy storage direct cooling plate through a connecting pipe, and a refrigerant is arranged in the connecting pipe; The control module is used for: If the average value of the temperatures at multiple different positions is greater than or equal to a first preset temperature, control the cooling module to enter the refrigeration mode; If the average value of the temperatures at multiple different positions is greater than or equal to a second preset temperature and less than the first preset temperature, control the cooling module to enter the low temperature mode; wherein, the flow rate of the refrigerant in the refrigeration mode is greater than the flow rate of the refrigerant in the low temperature mode and / or the temperature of the refrigerant in the refrigeration mode is greater than the temperature of the refrigerant in the low temperature mode; If the average value of the temperatures at multiple different positions is less than the second preset temperature, control the cooling module to stop working; wherein, the first preset temperature is greater than the second preset temperature.

4. The energy storage direct cooling plate test system according to claim 1, wherein The control module is further used for: Determine the temperature difference based on the maximum temperature and the minimum temperature among the temperature data at multiple different positions; And control the working state of the cooling module according to the temperature difference. After the cooling module works for a first preset duration, re-determine the average value of the temperatures at multiple different positions between the battery pack simulation module and the energy storage direct cooling plate and the temperature difference, and evaluate the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at multiple different positions, the temperature difference, the preset temperature corresponding to the simulated battery pack type, and the preset temperature difference.

5. The energy storage direct cooling plate test system according to claim 4, wherein: The control module is used for: After the cooling module works for a first preset duration, if the average value of the temperatures at multiple different positions re-determined is less than or equal to the preset temperature corresponding to the simulated battery pack type, and the temperature difference is less than or equal to the preset temperature difference, then determine that the cooling performance of the energy storage direct cooling plate meets the requirements; If the average value of the temperatures at multiple different positions re-determined is greater than the preset temperature corresponding to the simulated battery pack type, or the temperature difference is greater than the preset temperature difference, then determine that the cooling performance of the energy storage direct cooling plate does not meet the requirements.

6. The energy storage direct cooling plate test system according to claim 1, wherein, It further includes: An optical detection module; The optical detection module is electrically connected to the control module; The optical detection module is used for taking pictures of the surface of the energy storage direct cooling plate in real time, generating image data, and transmitting the image data to the control module; The control module is used for evaluating the anti-condensation performance of the energy storage direct cooling plate according to the image data.

7. The energy storage direct cooling plate test system according to claim 1, wherein: The battery pack simulation module includes: A heating film and a regulator; The temperature sensor array is arranged between the heating film and the energy storage direct cooling plate. The regulator is used for controlling the temperature of the heating film to simulate different working states of different battery packs, and transmitting the simulated battery pack type to the control module.

8. The energy storage direct cooling plate test system according to claim 3, wherein: The cooling module includes: A liquid replenishing tank, a gas-liquid separator, a compressor, a condenser, an expansion valve, and a waste liquid tank; The first end of the energy storage direct cooling plate is connected to the first end of the gas-liquid separator, the second end of the gas-liquid separator is connected to the first end of the compressor, the second end of the compressor is connected to the first end of the condenser, the second end of the condenser is connected to the first end of the expansion valve, the second end of the expansion valve is connected to the second end of the energy storage direct cooling plate, and the first end of the energy storage direct cooling plate is connected to the waste liquid tank; the liquid replenishing tank is connected to the first end of the gas-liquid separator; The control module is used for sending control signals to the compressor and the condenser according to the average value of the temperatures at multiple different positions to control the working states of the compressor and the condenser.

9. The energy storage direct cooling plate test system according to claim 8, wherein: The cooling module further includes: A temperature acquisition unit and a pressure acquisition unit; The temperature acquisition unit and the pressure acquisition unit are electrically connected to the control module; the temperature acquisition unit is used to obtain the temperature of the refrigerant in the connecting pipe in the cooling module in real time, and transmit the refrigerant temperature to the control module, and the pressure acquisition unit is used to obtain the pressure of the refrigerant in the connecting pipe of the cooling module in real time, and transmit the refrigerant pressure to the control module; The control module is used to judge whether there is any abnormality in the operation of the cooling module according to the refrigerant temperature and the refrigerant pressure.

10. The energy storage direct cooling plate test system according to claim 9, wherein, The temperature acquisition unit includes a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor; The pressure acquisition unit includes a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor; The first temperature sensor and the first pressure sensor are arranged between the compressor and the condenser, the second temperature sensor and the second pressure sensor are arranged between the condenser and the expansion valve, the third temperature sensor and the third pressure sensor are arranged between the expansion valve and the energy storage direct cooling plate, and the fourth temperature sensor and the fourth pressure sensor are arranged on one side of the energy storage direct cooling plate close to the gas-liquid separator.

11. The energy storage direct cooling plate test system according to claim 1, wherein, The temperature sensor array includes a plurality of temperature sensors; A plurality of the temperature sensors are uniformly arranged between the battery pack simulation module and the energy storage direct cooling plate.

12. A method for testing an energy storage direct cooling plate, characterized in that, Comprising: The battery pack simulation module adjusts its own temperature, simulates the battery pack in different working states, and transmits the simulated battery pack type to the control module; The temperature sensor array obtains the temperature data at different positions between the battery pack simulation module and the energy storage direct cooling plate in real time, and transmits each temperature data to the control module; The control module determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate according to each temperature data, controls the working state of the cooling module according to the average value of the temperatures at different positions, and after the cooling module works for a first preset duration, re-determines the average value of the temperatures at different positions between the battery pack simulation module and the energy storage direct cooling plate, and evaluates the cooling performance of the energy storage direct cooling plate according to the re-determined average value of the temperatures at different positions and the preset temperature corresponding to the simulated battery pack type.

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