Testing device and energy storage system

Abstract

A testing device (100) and an energy storage system. The testing device comprises a main body (10), a testing assembly (20), and a pressure regulating assembly (30); an accommodating cavity (11) for accommodating batteries is formed inside the main body; the testing assembly is arranged in the accommodating cavity and is used for performing a self-discharge screening test on the batteries; and the pressure regulating assembly is arranged on the main body and is used for regulating the pressure in the accommodating cavity. The testing device can achieve the storage and transportation of batteries, and efficiently utilize transportation time to perform a self-discharge screening test on the batteries, thereby effectively shortening the production period of the batteries; in addition, there is sufficient time for the self-discharge screening test in a transportation process, so that the testing result can be more accurate.

Description

A testing device and energy storage system

[0001] Cross-references

[0002] This application refers to Chinese patent application No. 202321956191X, filed on July 25, 2023, entitled “A testing device and energy storage system”, which is incorporated into this application in its entirety by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a testing device and an energy storage system. Background Art

[0004] Before batteries are released to the market, they must undergo various performance tests to ensure they meet quality requirements. However, battery performance testing is time-consuming and takes up significant production time. Insufficient testing time can also lead to inaccurate test results, preventing timely detection of battery quality issues, which can impact subsequent use.

[0005] Summary of the Invention

[0006] Based on this, it is necessary to provide a testing device and energy storage system to address the problems that the current battery testing process is time-consuming and the test results are of low accuracy.

[0007] In a first aspect, the present application provides a testing device that can be used to transport batteries. The testing device includes:

[0008] A main body having an accommodating cavity for accommodating a battery;

[0009] The test assembly is arranged in the accommodating cavity and is used for performing a self-discharge screening test on the battery.

[0010] Through the above structure, the testing device can realize the storage and transportation of batteries, and during the transportation process, the self-discharge screening test of the batteries in the accommodating cavity is performed through the testing component, which can efficiently utilize the transportation cycle of the battery, and there is sufficient time to perform the self-discharge screening test during transportation, which can make the test results more accurate.

[0011] In some embodiments, the testing device further includes a pressure regulating assembly disposed on the main body, the pressure regulating assembly being used to regulate the pressure within the accommodating chamber. By providing the pressure regulating assembly, the pressure within the accommodating chamber is regulated, thereby improving the efficiency of screening for self-discharge defects in the battery.

[0012] In some embodiments, the main body is provided with a pressure regulating port communicating with the accommodating chamber. A pressure regulating assembly is connected to the pressure regulating port to regulate the amount of gas entering or exiting the accommodating chamber. The pressure regulating assembly and the pressure regulating port cooperate to pressurize and release the gas within the accommodating chamber, thereby improving the efficiency of screening for self-discharging defects in the battery.

[0013] In some embodiments, the testing device further includes a first monitoring module, and the first monitoring module is used to monitor the air pressure in the accommodating cavity.

[0014] The first monitoring module can monitor the air pressure in the accommodating chamber in real time, so that the air pressure in the accommodating chamber is stably maintained within the target pressure range, thereby allowing metal foreign matter inside the battery to precipitate and deposit more quickly, making the battery self-discharge screening test results more accurate.

[0015] In some embodiments, the testing device further includes a temperature control component disposed on the main body, and the temperature control component is used to adjust the temperature in the accommodating cavity.

[0016] By providing a temperature control component, the temperature in the accommodating cavity can be adjusted more accurately and quickly, thereby improving the efficiency of the battery self-discharge screening test.

[0017] In some embodiments, the testing device further includes a second monitoring module, and the second monitoring module is used to monitor the temperature in the accommodating cavity.

[0018] The second monitoring module can monitor the temperature in the accommodating chamber in real time, thereby more accurately controlling the temperature adjustment in the accommodating chamber, making the battery self-discharge screening test process more stable and the test results more accurate.

[0019] In some embodiments, the test component includes a collection module and a storage module that are connected to each other. The collection module is used to collect the voltage value of the battery, and the storage module is used to receive and store the voltage value.

[0020] By setting up an acquisition module and a storage module, the voltage values ​​of the batteries in the accommodating cavity at different times can be measured and obtained, and then the self-discharge rate of the batteries can be quickly determined based on the size of the difference between the different voltage values, so that self-discharging defective batteries can be quickly and efficiently screened out.

[0021] In some embodiments, the testing device further includes a shelf disposed in the accommodating cavity, the shelf being used to carry the battery;

[0022] The collection module is arranged on the shelf and faces the battery.

[0023] By providing the shelves, multiple batteries can be stacked more stably in the accommodating cavity, thereby improving the space utilization rate in the accommodating cavity and improving the stability of the batteries in the accommodating cavity.

[0024] In some embodiments, the acquisition module includes a test probe, which is placed on the shelf and faces the batteries. The test probe can detect all batteries on the shelf, thereby quickly obtaining the voltage value of each battery at different times, so as to facilitate self-discharge screening testing of the batteries.

[0025] In some embodiments, the shelf is provided with a fixing portion for fixing the battery to the shelf. The fixing portion can make the placement of the battery on the shelf more stable and improve the stability of the battery during transportation.

[0026] In some embodiments, the testing device further includes a fire alarm module disposed within the accommodating cavity;

[0027] Among them, the fire alarm module is used to send out an alarm signal when the battery in the accommodating cavity is in thermal runaway and perform fire-fighting treatment on the battery that has experienced thermal runaway.

[0028] When the battery in the storage cavity experiences thermal runaway, the fire alarm module can issue an alarm message in time and protect the thermal runaway battery in the storage cavity, making the battery transportation process more stable and reliable.

[0029] In some embodiments, the main body includes a container and a frame disposed around the outer periphery of the container, and the accommodating cavity is formed inside the container;

[0030] Wherein, the accommodating member is constructed as a cylindrical structure; and / or,

[0031] The frame is constructed as a rectangular frame structure.

[0032] As a result, the cylindrical container is more stable, and the force at each position of the container cavity is more uniform. The frame is arranged around the outer periphery of the container to provide a certain degree of protection for the container and to make the test device more stable during transportation and movement.

[0033] In some embodiments, the container includes a shell and a cover. The shell has an opening. The cover is sealed over the opening. The shell and the cover together enclose a container cavity.

[0034] The battery can enter the shell through the opening, and then the cover is sealed on the opening to form a closed accommodating cavity inside the shell, so as to facilitate pressure regulation in the accommodating cavity or precise temperature regulation in the accommodating cavity.

[0035] In a second aspect, the present application provides an energy storage system, comprising the testing device as described above.

[0036] The above-mentioned testing device and energy storage system accommodate the battery in the accommodating cavity, and can realize the storage and transportation of the battery through the testing device. During the transportation process, the testing component can perform a self-discharge screening test on the battery in the accommodating cavity. On the one hand, the transportation time can be efficiently utilized to perform the battery self-discharge screening test, thereby effectively shortening the battery production cycle; on the other hand, there is sufficient time for the self-discharge screening test during the transportation process, which can make the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic structural diagram of a testing device according to one or more embodiments.

[0038] FIG2 is a schematic structural diagram of a testing device according to one or more embodiments.

[0039] 3 is a cross-sectional view of a shelf in a testing apparatus according to one or more embodiments.

[0040] FIG4 is a schematic diagram illustrating the structure of a shelf in a testing device according to one or more embodiments.

[0041] FIG5 is a partial enlarged view of point A in FIG4 .

[0042] FIG6 is a schematic plan view of a testing device according to one or more embodiments.

[0043] Explanation of the accompanying drawings: 100, test device; 10, main body; 20, test assembly; 30, voltage regulating assembly; 40, first monitoring module; 50, temperature control assembly; 60, second monitoring module; 70, shelf; 80, fire alarm module; 11, accommodating chamber; 12, accommodating part; 13, frame; 21, acquisition module; 22, storage module; 71, fixing part; 121, shell; 122, cover; 211, test probe; 711, limit part; 712, snap-in part; 713, spring. DETAILED DESCRIPTION

[0044] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0046] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0050] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in other fields. As the application of power batteries continues to expand, market demand is also growing.

[0051] During the battery processing and manufacturing process, foreign metals such as copper, zinc, iron, and stainless steel can be introduced. During storage, these foreign metals can dissolve at the cathode and deposit at the anode, forming metal dendrites. These dendrites can pierce the separator, creating micro-short circuits. This can lead to excessive self-discharge, disrupting normal battery operation and even causing fires and explosions.

[0052] Therefore, after the battery is manufactured, a self-discharge screening test is required before it is put on the market to screen out self-discharge defective batteries.

[0053] Currently, the self-discharge screening test of batteries is performed in a factory. That is, after the batteries are produced, they are placed in the factory and the self-discharge screening test is performed on the batteries.

[0054] On the one hand, the dissolution and extraction of metallic foreign matter takes a long time, so the self-discharge screening test needs to be continued for a long time to achieve high test accuracy. However, conducting self-discharge screening tests in the factory takes up a lot of production time, reducing battery production efficiency.

[0055] On the other hand, the space of the factory is generally large, and the consistency of factors such as temperature in the factory is difficult to control, resulting in large fluctuations in environmental factors during the test process, affecting the accuracy and consistency of the test process.

[0056] Based on the above considerations, in order to solve the problem that a large amount of production schedule is occupied during the current self-discharge screening test of the battery, resulting in low battery production efficiency, and the low test accuracy of the self-discharge screening test in the factory, the present application provides a test device that accommodates the battery in a storage cavity. The battery can be stored and transported through the test device, and during the transportation process, the test component can perform a self-discharge screening test on the battery in the storage cavity. On the one hand, the transportation time can be efficiently utilized to perform the self-discharge screening test of the battery, thereby effectively shortening the production cycle of the battery. On the other hand, there is sufficient time to perform the self-discharge screening test during transportation, which can make the test results more accurate.

[0057] 1 and 2 , an embodiment of the present application provides a test device 100 that can be used to transport batteries. The test device 100 includes a main body 10 and a test assembly 20 . The main body 10 has a receiving cavity 11 for receiving the battery. The test assembly 20 is disposed in the receiving cavity 11 and is used to perform a self-discharge screening test on the battery.

[0058] It should be noted that the main body 10 is a structure that provides a battery storage cavity 11 and is used to store the battery. Thus, by placing the battery in the storage cavity 11, the battery can be stored and transported by the testing device 100. The test assembly 20 is a structure that can perform a self-discharge screening test on the battery in the storage cavity 11. The test assembly 20 can perform a self-discharge screening test on the battery while the battery is being transported by the testing device 100.

[0059] Furthermore, the battery self-discharge screening test measures the battery's voltage change over a certain period of time to determine the battery's self-discharge rate, thereby screening for self-discharge defects. Before measuring the battery's voltage change, the battery must be heated and cooled to allow any metallic foreign matter inside to quickly precipitate and deposit, forming metal dendrites. The battery's self-discharge rate is then analyzed by measuring the battery's voltage change.

[0060] Currently, battery self-discharge screening tests are typically conducted within a factory. Specifically, after production, the batteries are placed inside the factory, then subjected to heating and cooling procedures. Voltage measurements are then taken at least twice to determine the voltage change before and after the test. This voltage change is then used to determine the battery's self-discharge rate, thereby screening out defective self-discharge batteries.

[0061] In the above test methods, on the one hand, if the self-discharge screening test time is too short, the metal foreign matter inside the battery may not be precipitated and deposited, resulting in inaccurate test results. Therefore, the battery self-discharge screening test needs to last for a long time. When placed in the factory for testing, it not only requires a large installation space in the factory, but also takes up a lot of production schedules, resulting in low production efficiency.

[0062] On the other hand, the space inside the factory is large, and during the test process, the consistency of environmental factors such as temperature is difficult to control, which leads to unstable precipitation and deposition process of metal foreign matter inside the battery, and also affects the accuracy of the test results.

[0063] Based on this, the testing device 100 in the present application can first provide a sealed accommodating chamber 11 for the battery, and place the battery in the accommodating chamber 11, so that the environmental factors such as the temperature in the accommodating chamber 11 can be kept stable, thereby making the precipitation and deposition of metal foreign matter inside the battery more stable.

[0064] Secondly, since batteries need to be transported after production, the transportation cycle is usually relatively long. The batteries are placed in the accommodating chamber 11 and transported through the testing device 100. During transportation, there is sufficient time to perform self-discharge screening tests on the batteries. This can effectively reduce the production schedule of batteries in the factory and fully utilize the battery transportation cycle.

[0065] Through the above structure, the testing device 100 can realize the storage and transportation of batteries, and during the transportation process, the self-discharge screening test of the batteries in the accommodating cavity 11 is performed through the testing component 20, which can efficiently utilize the transportation cycle of the battery, and there is sufficient time to perform the self-discharge screening test during the transportation process, which can make the test results more accurate.

[0066] In some embodiments, the testing device 100 further includes a pressure regulating assembly 30 disposed on the main body 10 , and the pressure regulating assembly 30 is used to regulate the pressure in the accommodating chamber 11 .

[0067] It should be noted that when performing self-discharge screening tests on batteries currently, circulating air is usually introduced to control the temperature in the factory and increase the rate of precipitation and deposition of metallic foreign matter inside the battery, so as to facilitate the self-discharge screening test of the battery.

[0068] However, research has found that pressurizing the battery can accelerate the screening of self-discharged defective products. Therefore, by providing a pressure regulating component 30 to regulate the pressure in the accommodating chamber 11, the screening efficiency of self-discharged defective products in the battery is improved.

[0069] In some embodiments, a pressure regulating port (not shown) communicating with the accommodating chamber 11 is provided on the main body 10 , and the pressure regulating assembly 30 is communicated with the pressure regulating port to regulate the amount of gas entering or discharged from the accommodating chamber 11 .

[0070] Specifically, the pressure regulating port can be connected to the pressure regulating component 30 through a pipeline, and the pressure regulating component 30 can introduce gas into the accommodating chamber 11 or discharge gas from the accommodating chamber 11 through the pressure regulating port, thereby pressurizing and releasing the gas in the accommodating chamber 11 and realizing pressure regulation in the accommodating chamber 11.

[0071] It should be noted that currently, when batteries undergo self-discharge screening tests in factories, due to the large space in the factories, the batteries can only be mechanically pressurized. However, mechanical pressurization can easily cause certain damage to the battery structure, which will reduce the efficiency of the self-discharge screening test.

[0072] Therefore, through the cooperation between the pressure regulating assembly 30 and the pressure regulating port, the gas in the accommodating chamber 11 is pressurized and released, thereby improving the efficiency of screening self-discharge defective batteries.

[0073] In some embodiments, the testing device 100 further includes a first monitoring module 40 , which is configured to monitor the air pressure in the accommodating chamber 11 .

[0074] Specifically, the first monitoring module 40 can monitor the air pressure in the accommodating chamber 11 in real time, so that the air pressure in the accommodating chamber 11 is stably maintained within the target pressure range, so that the metal foreign matter inside the battery can be precipitated and deposited more quickly, making the battery self-discharge screening test results more accurate.

[0075] In some embodiments, the pressure in the accommodating chamber 11 ranges from 0 MPa to 0.4 MPa. Preferably, the pressure in the accommodating chamber 11 ranges from 0.1 MPa to 0.3 MPa.

[0076] Specifically, if the pressure in the accommodating chamber 11 is too low, the precipitation and deposition efficiency of metal foreign matter inside the battery will be low, while if the pressure in the accommodating chamber 11 is too high, the pressure difference between the inside and outside of the accommodating chamber 11 will be too large, which places high requirements on the structure of the main body 10.

[0077] Therefore, setting the pressure range in the accommodating chamber 11 to 0.1 MPa-0.3 MPa can make the metal foreign matter inside the battery precipitate and deposit more efficiently, thereby improving the efficiency and accuracy of the battery self-discharge screening test.

[0078] In some embodiments, the testing device 100 further includes a temperature control component 50 disposed on the main body 10 , and the temperature control component 50 is used to adjust the temperature in the accommodating cavity 11 .

[0079] Specifically, the temperature control assembly 50 may include an air intake duct and a blower connected to the air intake duct. The air intake duct is connected to the accommodating chamber 11. The blower blows hot air into the accommodating chamber 11 through the air intake duct to increase the temperature of the accommodating chamber 11, or blows cold air into the accommodating chamber 11 through the air intake duct to reduce the temperature of the accommodating chamber 11. In this way, the temperature of the accommodating chamber 11 can be quickly adjusted.

[0080] Before performing the self-discharge screening test on the battery, the temperature control assembly 50 is first used to increase the temperature within the accommodating chamber 11. The battery is then allowed to stand in a high-temperature environment for a period of time to complete the battery aging process and accelerate the dissolution and precipitation of metallic foreign matter within the battery. The temperature control assembly 50 is then used to lower the temperature within the accommodating chamber 11, cooling the battery to facilitate voltage acquisition.

[0081] By providing the temperature control assembly 50 , the temperature in the accommodating cavity 11 can be adjusted more accurately and quickly, thereby improving the efficiency of the battery self-discharge screening test.

[0082] In some embodiments, the testing device 100 further includes a second monitoring module 60 , which is configured to monitor the temperature in the accommodating cavity 11 .

[0083] The second monitoring module 60 can monitor the temperature in the accommodating chamber 11 in real time, thereby more accurately controlling the temperature adjustment in the accommodating chamber 11 , making the battery self-discharge screening test process more stable and the test results more accurate.

[0084] Furthermore, a control module may be provided, and the acquisition module 21 , the storage module 22 , the voltage regulating component 30 , the first monitoring module 40 , the temperature control component 50 and the second monitoring module 60 may be communicatively connected to the control module.

[0085] The control module can control the acquisition module 21 to acquire the battery voltage at a target time, thereby realizing an automatic acquisition process of the battery voltage. After the acquisition is completed, the storage module 22 receives and stores the voltage value. The control module can compare different voltage values ​​and obtain the difference between them to determine the self-discharge rate of the battery.

[0086] In addition, the control module can also timely control the pressure regulating assembly 30 to adjust the pressure in the accommodating chamber 11 according to the monitoring results of the first monitoring module 40. The control module can timely control the temperature control assembly 50 to adjust the temperature in the accommodating chamber 11 according to the monitoring results of the second monitoring module 60.

[0087] In some embodiments, the testing component 20 includes a collection module 21 and a storage module 22 that are connected to each other. The collection module 21 is used to collect the voltage value of the battery, and the storage module 22 is used to receive and store the voltage value.

[0088] Specifically, the acquisition module 21 is communicatively connected to the storage module 22. When performing a self-discharge screening test on the battery in the accommodating cavity 11, the acquisition module 21 first measures the battery voltage to obtain a first voltage value, which is then stored in the storage module 22. Then, after a fixed interval, the acquisition module 21 measures the battery voltage a second time to obtain a second voltage value, which is then stored in the storage module 22.

[0089] Furthermore, by comparing the first voltage value with the second voltage value and obtaining a voltage difference between the two, the self-discharge rate of the battery can be determined according to the size of the voltage difference within a fixed time interval, thereby screening out self-discharging defective products.

[0090] By setting up the acquisition module 21 and the storage module 22, the voltage values ​​of the batteries in the accommodating cavity 11 at different times can be measured and obtained, and then the self-discharge rate of the batteries can be quickly determined based on the size of the difference between the different voltage values, so that self-discharging defective batteries can be quickly and efficiently screened out.

[0091] In some embodiments, the temperature in the accommodating chamber 11 ranges from 10° C. to 70° C. Preferably, the temperature in the accommodating chamber 11 ranges from 40° C. to 60° C.

[0092] During the self-discharge screening test, hot air is first introduced into chamber 11 to a temperature of 45°C-70°C. After a period of stagnant air flow, the battery is aged and the dissolution of metallic foreign matter within the battery is accelerated. Cold air is then introduced into chamber 11 to cool the battery to 25°C. The battery voltage is then collected and stored.

[0093] Therefore, by setting the temperature range in the accommodating cavity 11 to 40° C.-60° C., the metallic foreign matter inside the battery can be dissolved out more quickly, thereby improving the efficiency of the battery self-discharge screening test.

[0094] In some embodiments, the testing device 100 further includes a shelf 70 disposed in the accommodating cavity 11 , the shelf 70 being used to carry the batteries, wherein the acquisition module 21 is disposed on the shelf 70 and facing the batteries.

[0095] Specifically, the battery can be assembled inside the tray, and then the tray and the battery are placed on the shelf 70. The shelf 70 can realize the stacking arrangement of multiple batteries in the accommodating cavity 11, making the batteries more stable in the accommodating cavity 11.

[0096] The acquisition module 21 is disposed on the shelf 70 and faces the batteries, so as to be able to acquire the voltage of the batteries on the shelf 70 for the purpose of performing a self-discharge screening test.

[0097] By providing the shelf 70 , multiple batteries can be stacked more stably in the accommodating cavity 11 , thereby improving the space utilization in the accommodating cavity 11 and enhancing the stability of the batteries in the accommodating cavity 11 .

[0098] Please refer to FIG. 2 and FIG. 3 . In some embodiments, the acquisition module 21 includes a test probe 211 . The test probe 211 is disposed on the shelf 70 and faces the battery.

[0099] Specifically, the shelf 70 includes a multi-layer structure, each battery support is arranged on the bottom plate of a layer of shelf 70, and the test probe 211 is set on the top plate of the shelf 70 above each layer of batteries, and the test probe 211 is set downward toward the battery. Thus, the test probe 211 can better measure the voltage of the batteries placed on each layer of shelf 70.

[0100] 4 and 5 , in some embodiments, a shelf 70 is provided with a fixing portion 71 , and the fixing portion 71 is used to fix the battery on the shelf.

[0101] Specifically, the fixing portion 71 may include a limit member 711, a clamping member 712 and a spring 713, wherein the limit member 711 is arranged on the shelf 70 and is surrounded to form a receiving position with an open end, and the contour of the receiving position matches the outer contour of the battery, so that the battery can be placed in the receiving position through the opening.

[0102] Furthermore, the clamping member 712 is rotatably disposed on the retaining member 711 about a surface perpendicular to the shelf 70 on which the retaining member 711 is located, and is located at the opening of the storage location. A spring 713 is connected between the clamping member 712 and the retaining member 711. As the battery enters the storage location from the opening, a thrust is applied to the battery toward the interior of the storage location, allowing the battery to enter the storage location from the opening. During this process, the battery presses against the clamping member 712, and under the action of the thrust, the clamping member 712 overcomes the elastic force of the spring 713 and rotates toward the interior of the storage location, allowing the battery to smoothly enter the storage location.

[0103] When the battery is fully seated, the battery disengages from the latch 712, and the latch 712 rotates out of the seat under the elastic restoring force of the spring 713. When the latch 712 rotates to its initial position under the elastic restoring force of the spring 713, the opening direction of the latch 712 restricts the battery to the seat.

[0104] Therefore, by providing the fixing portion 71 , the battery can be more stably installed on the shelf 70 .

[0105] As shown in FIG6 , in some embodiments, the testing device 100 further includes a fire alarm module 80 disposed in the accommodating cavity 11. The fire alarm module 80 is configured to issue an alarm signal when the battery in the accommodating cavity 11 experiences thermal runaway and perform firefighting measures on the battery experiencing thermal runaway.

[0106] When the battery experiences thermal runaway, the fire alarm module 80 can sense the amount of smoke in the accommodating chamber 11 and issue an alarm message when the amount of smoke is higher than a certain preset value. The control module can promptly control the fire alarm module 80 according to the alarm message to protect the thermal runaway battery in the accommodating chamber 11, making the battery transportation process more stable and reliable.

[0107] Referring again to Figures 1 and 2 , in some embodiments, the main body 10 includes a container 12 and a frame 13 surrounding the container 12. The accommodating cavity 11 is formed within the container 12. The container 12 is configured as a cylindrical structure, and / or the frame 13 is configured as a rectangular frame structure.

[0108] The container 12 can be used to store batteries. The frame 13 is disposed around the outer periphery of the container 12 , thereby providing a certain degree of protection for the container 12 and allowing the batteries to be more stably accommodated in the container 12 .

[0109] Furthermore, the container 12 is configured as a cylindrical structure, and the frame 13 is configured as a rectangular frame structure. During transportation or movement, the rectangular frame structure of the frame 13 can ensure more stable placement of the test device 100 and enable stacking of multiple test devices 100. Since the chamber 11 needs to be pressurized or depressurized, configuring the container 12 as a cylindrical structure can ensure more uniform force distribution across the chamber 11, thereby improving the structural stability of the container 12.

[0110] Thus, the cylindrical container 12 is more stable, making the force more uniform at each position of the accommodating cavity 11. The frame 13 surrounding the accommodating component 12 can provide a certain degree of protection for the accommodating component 12 and make the testing device 100 more stable during transportation and movement.

[0111] In some embodiments, the container 12 includes a shell 121 and a cover 122 . The shell 121 has an opening. The cover 122 seals the opening. The shell 121 and the cover 122 together enclose the accommodating cavity 11 .

[0112] Specifically, the battery can enter the shell 121 through the opening, and then the cover 122 is sealed on the opening to form a closed accommodating chamber 11 inside the shell 121, so as to facilitate pressure adjustment in the accommodating chamber 11 or precise adjustment of the temperature in the accommodating chamber 11.

[0113] Based on the same concept as the above-mentioned testing device 100 , the present application provides an energy storage system, including the above-mentioned testing device 100 .

[0114] According to one or more embodiments, a battery is placed in the accommodating chamber 11 and transported via the testing device 100. During transportation, the accommodating chamber 11 is first pressurized by the pressure regulating assembly 30 to maintain the air pressure within the accommodating chamber 11 within the range of 0.1 MPa-0.3 MPa.

[0115] Furthermore, hot air is blown into the accommodating chamber 11 via the temperature control assembly 50, raising the temperature within the chamber 11. After a period of rest, the battery aging process is completed, accelerating the dissolution and removal of metallic foreign matter within the battery. Cool air is then blown into the accommodating chamber 11 via the temperature control assembly 50, lowering the battery temperature within the chamber 11.

[0116] The acquisition module 21 performs a first voltage acquisition on the battery to obtain a first voltage value, and stores the first voltage value in the storage module 22. After a certain interval, the acquisition module 21 performs a second voltage acquisition on the battery to obtain a second voltage value, and stores the second voltage value in the storage module 22.

[0117] By comparing the first voltage value and the second voltage value, the voltage difference of the battery within the target time is obtained, so as to analyze and obtain the self-discharge rate of the battery, thereby screening out self-discharge defective batteries.

[0118] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A testing device capable of being used to transport batteries, the testing device comprising: A main body, having an accommodating cavity for accommodating the battery; A test assembly, disposed in the accommodating cavity and used to perform a self-discharge screening test on the battery; as well as The pressure regulating assembly is arranged on the main body and is used for regulating the pressure in the accommodating cavity.

2. The testing device according to claim 1, wherein: The main body is provided with a pressure regulating port communicated with the accommodating chamber, and the pressure regulating assembly is communicated with the pressure regulating port to regulate the amount of gas introduced into or discharged from the accommodating chamber.

3. The testing device according to claim 1 or 2, wherein: The testing device further includes a first monitoring module, and the first monitoring module is used to monitor the air pressure in the accommodating chamber.

4. The testing device according to any one of claims 1 to 3, wherein: The testing device further comprises a temperature control component disposed on the main body, and the temperature control component is used to adjust the temperature in the accommodating cavity.

5. The testing device according to claim 4, wherein: The testing device further includes a second monitoring module, and the second monitoring module is used to monitor the temperature in the accommodating cavity.

6. The testing device according to any one of claims 1 to 5, wherein: The test component includes a collection module and a storage module that are connected to each other. The collection module is used to collect the voltage value of the battery, and the storage module is used to receive and store the voltage value.

7. The testing device according to claim 6, wherein: The testing device further comprises a shelf disposed in the accommodating cavity, the shelf being used to carry the battery; Wherein, the collection module is arranged on the shelf and faces the battery.

8. The testing device according to claim 7, wherein: The acquisition module includes a test probe, which is arranged on the shelf and faces the battery.

9. The testing device according to claim 7 or 8, wherein: The shelf is provided with a fixing part, and the fixing part is used to fix the battery on the shelf.

10. The testing device according to any one of claims 1 to 9, wherein: The testing device also includes a fire alarm module disposed in the accommodating cavity; Wherein, the fire alarm module is used to send out an alarm signal when the battery in the accommodating cavity is in thermal runaway and perform firefighting treatment on the battery in thermal runaway.

11. The testing device according to any one of claims 1 to 10, wherein: The main body includes a container and a frame arranged around the outer periphery of the container, and the accommodating cavity is formed inside the container; Wherein, the accommodating part is constructed as a cylindrical structure.

12. The testing device according to any one of claims 1 to 11, wherein: The main body includes a receiving part and a frame body arranged around the outer periphery of the receiving part, and the receiving cavity is formed inside the receiving part; wherein the frame body is constructed as a rectangular frame structure.

13. The testing device according to claim 11 or 12, wherein: The accommodating component includes a shell and a cover. The shell has an opening. The cover is sealed and covered on the opening. The shell and the cover are together enclosed to form the accommodating cavity.

14. An energy storage system, characterized in that: Comprising a testing device as described in any one of claims 1-13.

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