Aging test device and battery processing equipment

Abstract

The utility model relates to an aging test device and battery processing equipment, and the aging test device comprises a connecting assembly which comprises a first wire harness group and a second wire harness group; the charging and discharging assembly is used for charging and discharging each battery monomer in a charging and discharging mode; the equalization component is used for carrying out equalization processing on the state difference among the battery monomers in an equalization mode; wherein the first wire harness group is configured to connect each battery monomer with the charging and discharging assembly in series to form a loop in a charging and discharging mode and an equalization mode, and the second wire harness group is configured to connect each battery monomer with the equalization assembly in series in the equalization mode. According to the invention, the plurality of single batteries are connected in series to the charging and discharging assembly or the equalization assembly through the connection assembly, so that the consistency of current is realized, and the accuracy of a test result is improved; in addition, the equalization assembly can also perform equalization processing on each battery monomer, thereby ensuring that each battery monomer can be charged and discharged properly, and enabling the aging test process to be more stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to an aging test device and battery processing equipment. BACKGROUND

[0002] Self-discharge sorting is the final purpose of the battery aging process. The self-discharge of the battery can be divided into physical self-discharge and chemical self-discharge according to the different reaction types. From the influence of self-discharge on the battery, self-discharge can be divided into two types: self-discharge with reversible capacity loss compensation and self-discharge with permanent capacity loss.

[0003] Generally speaking, the energy loss caused by physical self-discharge is recoverable, while the energy loss caused by chemical self-discharge is basically irreversible. The self-discharge of the battery comes from two aspects: (1) self-discharge caused by the chemical system itself; this part is mainly caused by the internal side reaction of the battery, including the change of the positive and negative electrode material surface film layer, the potential change caused by the thermodynamic instability of the electrode, and the dissolution and precipitation of metal impurities; (2) the micro-short circuit caused by the diaphragm between the positive and negative electrodes leads to the self-discharge of the battery.

[0004] In the current aging test process, the aging speed of different battery monomers is not the same, thereby affecting the final test result. CONTENT OF THE INVENTION

[0005] Therefore, it is necessary to provide an aging test device and battery processing equipment to solve the problem that the aging speed of different battery monomers is not the same in the current aging test process, thereby affecting the final test result.

[0006] In a first aspect, the present application provides an aging test device for aging test of a plurality of battery monomers. The aging test device has a charge-discharge mode and an equalization mode and includes a connection assembly, a charge-discharge assembly, and an equalization assembly. The connection assembly includes a first wire harness group and a second wire harness group. The charge-discharge assembly is used to charge and discharge each battery monomer in the charge-discharge mode. The equalization assembly is used to equalize the state difference between each battery monomer in the equalization mode. The first wire harness group is configured to connect each battery monomer and the charge-discharge assembly in series to form a loop in both the charge-discharge mode and the equalization mode. The second wire harness group is configured to connect each battery monomer and the equalization assembly in series in the equalization mode.

[0007] By the above structure, the plurality of battery monomers are connected in series to the charging and discharging assembly or the balancing assembly by the connecting assembly. When each battery monomer is connected in series to the charging and discharging assembly, the charging and discharging assembly can charge and discharge each battery monomer and perform aging test. Since each battery monomer is connected in series, the current passing through each battery monomer is the same, achieving consistency of the current. In this way, the aging speed of all battery monomers is the same, improving the accuracy of the test result. At the same time, during the aging process, the balancing assembly can also perform balancing treatment on each battery monomer, monitor and adjust the state difference between each battery monomer, so as to ensure that each battery monomer can be properly charged and discharged, making the aging test process more stable.

[0008] In some embodiments, the second wire harness group is configured to connect each battery monomer in series with the charging and discharging assembly in the charging and discharging mode, for obtaining the voltage value of each battery monomer and delivering to the charging and discharging assembly.

[0009] By the above structure, not only the aging test of each battery monomer can be successfully realized, but also the voltage difference between each battery monomer can be monitored and adjusted during the aging test process, so that each battery monomer can be properly charged and discharged, thereby improving the accuracy of the aging test result.

[0010] In some embodiments, the aging test device comprises a limiting assembly and a conductive assembly. The limiting assembly comprises a plurality of detection positions for one-to-one fixing each battery monomer. The conductive assembly is arranged on the limiting assembly and is used for connecting the battery monomers on each detection position in series to the connecting assembly.

[0011] By the above structure, the fixation of each battery monomer can be realized, so as to connect each battery monomer in series to the charging and discharging assembly or the balancing assembly through the connecting assembly.

[0012] In some embodiments, the limiting assembly comprises a limiting tray and a limiting support. The limiting support and each detection position are arranged on the limiting tray. The conductive assembly is arranged on the limiting support and is used for electrically connecting the electrode terminals of each battery monomer on the detection position.

[0013] By the above structure, a plurality of battery monomers can be fixed on the limiting tray at the same time, and the series connection between each battery monomer can be realized through the conductive assembly, so as to perform aging test.

[0014] In some embodiments, the limiting assembly further comprises a first limiting piece and a second limiting piece. The first limiting piece is movably arranged on the limiting tray along a first direction and is used for limiting each battery monomer to the corresponding detection position along the first direction. The second limiting piece is movably arranged on the limiting tray along a second direction and is used for limiting each battery monomer to the corresponding detection position along the second direction. The first direction and the second direction are both parallel to the limiting tray and are arranged intersecting each other.

[0015] Through the above structure, each detection position on the limiting tray can better adapt to battery monomers of different sizes and different specifications, and the practicability of the aging test device can be improved.

[0016] In some embodiments, the conductive assembly is movably arranged on the limiting support along a third direction intersecting the limiting tray.

[0017] Through the above structure, each battery monomer can be more conveniently fixed on the limiting tray, and various battery monomers of different sizes and different specifications can be adapted, so that the conductive assembly can better connect with the electrode terminal of the battery monomer.

[0018] In some embodiments, the limiting assembly further comprises a threaded rod and a linear bearing, the threaded rod is connected with the limiting support and extends along the third direction, and the linear bearing is connected between the threaded rod and the conductive assembly for driving the conductive assembly to move on the threaded rod.

[0019] Through the above structure, the movement of the conductive assembly in the vertical direction can be realized, so that the conductive assembly can adapt to battery monomers of different sizes and different specifications and be smoothly connected therewith.

[0020] In some embodiments, the conductive assembly comprises a mounting plate and at least one probe, the mounting plate is connected with the linear bearing and extends along the first direction, and each probe is arranged on the mounting plate along the first direction.

[0021] Through the above structure, since each probe is arranged on the mounting plate, when the mounting plate moves along the vertical direction under the driving of the linear bearing, each probe can move synchronously in the vertical direction, and the operation is more convenient.

[0022] In some embodiments, each probe is movably arranged on the mounting plate along the third direction, and the conductive assembly further comprises an elastic member connected between the corresponding probe and the mounting plate and used for providing a buffer force when the probe abuts against the corresponding electrode terminal.

[0023] Through the above structure, the probe can more stably abut against the electrode terminal of the corresponding battery monomer, so that the connection between the probe and the corresponding battery monomer is more stable.

[0024] In some embodiments, two mounting plates are a group and are movably arranged on the corresponding linear bearing along the second direction; wherein the conductive assembly comprises at least one group of mounting plates.

[0025] Through the above structure, the probe on each mounting plate can be more accurately connected with the electrode terminal of the corresponding battery monomer, and the aging test of each battery monomer can be smoothly realized.

[0026] In some embodiments, the aging test device further comprises an elbow clamp assembly, which has a clamping state of clamping at least one set of mounting plates and a separation state of separating from the corresponding mounting plates under external force.

[0027] Through the above structure, the stability in the test process can be further improved, thereby improving the accuracy of the test result.

[0028] In a second aspect, the application further provides a battery processing equipment, comprising the aging test device as described above, and the aging test device is used for aging test of the battery monomer.

[0029] The aging test device and the battery processing equipment described above utilize the connecting assembly to connect the plurality of battery monomers in series to the charge-discharge assembly or the balancing assembly. When the battery monomers are connected in series to the charge-discharge assembly, the charge-discharge assembly can charge and discharge each battery monomer to perform aging test. Since the battery monomers are connected in series, the current passing through each battery monomer is the same, thereby realizing the consistency of the current. In this way, the aging speed of all battery monomers is the same, thereby improving the accuracy of the test result. Meanwhile, during the aging process, the balancing assembly can also perform balancing treatment on each battery monomer to monitor and adjust the state difference between the battery monomers, thereby ensuring that each battery monomer can be properly charged and discharged, and making the aging test process more stable. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the aging test device according to one or more embodiments.

[0031] Figure 2 It is a schematic diagram of the structure of the connecting assembly in the aging test device according to one or more embodiments.

[0032] Figure 3 It is a schematic diagram of the structure of the limiting assembly in the aging test device according to one or more embodiments.

[0033] Figure 4 It is a schematic diagram of the structure of the limiting assembly and the conductive assembly in the aging test device according to one or more embodiments.

[0034] Figure 5 It is Figure 4 It is a partial enlarged view of A in FIG. 7.

[0035] The reference signs are as follows: 100, aging test device; 200, battery monomer; 10, connecting assembly; 20, limiting assembly; 30, conductive assembly; 40, elbow clamp assembly; 11, first wire harness group; 12, second wire harness group; 21, detection position; 22, limiting tray; 23, limiting support; 24, first limiting piece; 25, second limiting piece; 26, threaded rod; 27, linear bearing; 31, mounting plate; 32, probe; 33, elastic piece; a, first direction; b, second direction; c, third direction. DETAILED DESCRIPTION

[0036] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways other than those described herein, and the skilled person can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0039] In the present application, unless specifically defined otherwise, if there is any appearance of the terms "mount", "connect", "connection", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless specifically defined otherwise, if there is any appearance of the terms "mount", "connect", "connection", "fix", and the like, these terms should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0042] At present, from the development of market situation, the application of power battery is more and more widely. Power battery is not only applied to energy storage power supply system of water power, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the market demand is also increasing.

[0043] In the battery structure, it usually includes a box body and a battery monomer. The battery monomer is placed in the box body, so as to provide a containing space for the battery monomer through the box body, and the battery monomer is well protected.

[0044] The battery monomer is the smallest unit of the battery. After the battery monomer is assembled and injected, and after the first charge and discharge formation, aging test needs to be carried out. The aging test has the following purposes:

[0045] 1. Placing the battery monomer in a high-temperature or room-temperature environment for a period of time can ensure that the electrolyte can fully infiltrate the pole piece, which is conducive to the stability of the battery monomer performance;

[0046] 2. After the battery monomer undergoes the pre-formation process, the graphite negative electrode inside the battery monomer will form a certain amount of solid electrolyte interphase (SEI), but the structure of the SEI film is tight and the pores are small. Aging treatment of the battery monomer in a high-temperature environment can help the structure of the SEI film to reorganize and form a loose and porous film;

[0047] 3. After formation, the voltage of the battery monomer is in an unstable stage. After aging, the active substances in the positive and negative electrode materials can accelerate some side effects, such as gas production, electrolyte decomposition, and metal impurity precipitation, so that the electrochemical performance of the battery monomer quickly reaches a stable state;

[0048] 4. Eliminate unqualified battery monomers with severe self-discharge to facilitate the selection of battery monomers with high consistency.

[0049] Among them, the aging process is a main purpose of screening internal micro-short circuit battery monomers. The open-circuit voltage of the battery monomer will decrease during storage, but the amplitude will not be large. If the open-circuit voltage decreases too fast or the amplitude is too large, it is an abnormal phenomenon.

[0050] Self-discharge sorting is the final purpose of the battery monomer aging process. Battery monomer self-discharge can be divided into physical self-discharge and chemical self-discharge according to the different reaction types. Considering the influence of self-discharge on the battery monomer, self-discharge can be divided into two types: self-discharge that can recover the loss of capacity and self-discharge that permanently loses capacity.

[0051] Generally speaking, the energy loss caused by physical self-discharge is recoverable, while the energy loss caused by chemical self-discharge is basically irreversible. The self-discharge of the battery monomer comes from two aspects:

[0052] (1) Self-discharge caused by the chemical system itself; this part is mainly caused by the internal side reactions of the battery monomer, including changes in the surface film of the positive and negative electrode materials, potential changes caused by electrode thermodynamic instability, and dissolution and precipitation of metal impurities;

[0053] (2) Micro-short circuit inside the battery monomer caused by the separator between the positive and negative electrodes, which leads to self-discharge of the battery monomer.

[0054] In the process of aging test of battery cells, usually, multiple battery cells are tested at the same time, which can include battery cells of different specifications, i.e., the resistances of different battery cells can be different. In this way, the currents through different battery cells can be different in the process of aging test, resulting in different aging speeds of different battery cells.

[0055] In this way, when a part of battery cells reaches the preset voltage, another part of battery cells can not reach the preset voltage, but are disconnected at the same time as the part of battery cells that have reached the preset voltage, thereby affecting the accuracy of the final test results.

[0056] Based on the above considerations, in order to solve the problem that the aging speeds of different battery cells are different in the current aging test process, thereby affecting the final test results, in one or more embodiments of the present application, an aging test device is provided, which uses a connection assembly to connect multiple battery cells in series to a charge-discharge assembly or an equalization assembly. When each battery cell is connected in series to the charge-discharge assembly, the charge-discharge assembly can charge and discharge each battery cell to perform aging test. Since each battery cell is in series, the current through each battery cell is the same, achieving consistency of the current. In this way, the aging speeds of all battery cells are the same, improving the accuracy of the test results. At the same time, in the aging process, the equalization assembly can also perform equalization processing on each battery cell, monitor and adjust the state difference between each battery cell, thereby ensuring that each battery cell can be properly charged and discharged, making the aging test process more stable.

[0057] Referring to Figure 1 and Figure 2 , an embodiment of the present application provides an aging test device 100 for aging test of multiple battery cells 200. The aging test device 100 includes a connection assembly 10, a charge-discharge assembly (not shown in the figure) and an equalization assembly (not shown in the figure). The connection assembly 10 includes a first wire harness group 11 and a second wire harness group 12. The charge-discharge assembly is used to charge and discharge each battery cell 200 in a charge-discharge mode, and the equalization assembly is used to perform equalization processing on the state difference between each battery cell 200 in an equalization mode. The first wire harness group 11 is configured to connect each battery cell 200 and the charge-discharge assembly in series to form a loop in both the charge-discharge mode and the equalization mode, and the second wire harness group 12 is configured to connect each battery cell 200 and the equalization assembly in series in the equalization mode.

[0058] It should be noted that the connection assembly 10 refers to a structure capable of sequentially connecting the battery monomers 200 to be tested in series. The charge and discharge assembly refers to a structure capable of being electrically connected to each battery monomer 200 and charging and discharging each battery monomer 200. The charge and discharge assembly can be provided as a power supply device, the connection assembly 10 first connects each battery monomer 200 in series, and then connects the connection assembly 10 with the charge and discharge assembly, so as to charge and discharge each battery monomer 200 by using the charge and discharge assembly.

[0059] The equalization assembly refers to a structure capable of monitoring and adjusting the state difference between each battery monomer 200, so that each battery monomer 200 can be properly charged and discharged. The state difference can specifically include the voltage difference between each battery monomer 200, or the remaining power difference between each battery monomer 200, etc. Taking the voltage difference between each battery monomer 200 as an example, the equalization assembly can be provided as an equalizer. After a certain period of time during the aging test, the voltage of each battery monomer 200 is detected by using the equalizer, and the voltage difference between different battery monomers 200 is equalized, so that the voltage of each battery monomer 200 can be consistent.

[0060] In this way, since each battery monomer 200 is connected in series with each other, the current through each battery monomer 200 is consistent, and the voltage difference between each battery monomer 200 is adjusted by the equalization assembly, so that the consistency of the current of each battery monomer 200 can be maintained. Therefore, the aging process of each battery monomer 200 during the test can be kept synchronized, and the accuracy of the aging test is improved.

[0061] Further, the connection assembly 10 is integrated on the aging test device 100, which not only facilitates the connection of the connection assembly 10 with each battery monomer 200 in series, but also facilitates the quick connection of the connection assembly 10 with the charge and discharge assembly or the equalization assembly, thereby improving the assembly efficiency.

[0062] Through the above structure, the connection assembly 10 is used to connect a plurality of battery monomers 200 in series to the charge and discharge assembly or the equalization assembly. When each battery monomer 200 is connected in series to the charge and discharge assembly, the charge and discharge assembly can charge and discharge each battery monomer 200 to perform the aging test. Since each battery monomer 200 is connected in series, the current through each battery monomer 200 is the same, and the consistency of the current is achieved. In this way, the aging speed of all battery monomers 200 is the same, and the accuracy of the test result is improved. At the same time, during the aging process, the equalization assembly can also perform equalization processing on each battery monomer 200, monitor and adjust the voltage difference between each battery monomer 200, so as to ensure that each battery monomer 200 can be properly charged and discharged, and the aging test process is more stable.

[0063] Further, the connection assembly 10 comprises a first harness group 11 and a second harness group 12. The first harness group 11 is connected in series with each battery monomer 200 in both the charging and discharging mode and the equalization mode, and connects each battery monomer 200 and the charging and discharging assembly in series to form a loop, so as to charge and discharge each battery monomer 200.

[0064] The second harness group 12 can connect each battery monomer 200 and the equalization assembly in series in the equalization mode, so as to equalize the voltage difference between each battery monomer 200 through the equalization assembly.

[0065] In some embodiments, the second harness group 12 is configured to connect each battery monomer 200 and the charging and discharging assembly in series in the charging and discharging mode, for obtaining the voltage value of each battery monomer 200 and transmitting to the charging and discharging assembly.

[0066] Specifically, the connection assembly 10 can further comprise an integrated board, and the first harness group 11 and the second harness group 12 are integrated on the integrated board. The first harness group 11 can comprise a high-voltage male connector and a high-voltage female connector integrated on the integrated board, and the high-voltage male connector and the high-voltage female connector are connected with each battery monomer 200 and the charging and discharging assembly through wires, respectively.

[0067] Specifically, the high-voltage male connector and the high-voltage female connector are connected with each other, then the high-voltage female connector is connected with each battery monomer 200 through wires, and at the same time, the high-voltage male connector is connected to the charging and discharging assembly through wires. In this way, the charging and discharging assembly can charge and discharge each battery monomer 200.

[0068] The second harness group 12 can comprise a low-voltage male connector and a low-voltage female connector integrated on the integrated board, and the low-voltage male connector and the low-voltage female connector are connected with each battery monomer 200, the charging and discharging assembly or the equalization assembly through wires, respectively.

[0069] Specifically, the low-voltage male connector and the low-voltage female connector are connected with each other, then the low-voltage female connector is connected with each battery monomer 200 through wires, and at the same time, the low-voltage male connector is connected to the charging and discharging assembly or the equalization assembly through wires.

[0070] In the charging and discharging mode, the second harness group 12 is connected with the charging and discharging assembly, and in the equalization mode, the second harness group 12 is connected with the equalization assembly.

[0071] During the aging test, the second wire harness group 12 is first connected between each battery cell 200 and the charge-discharge assembly. That is, both the first wire harness group 11 and the second wire harness group 12 are connected between each battery cell 200 and the charge-discharge assembly. At this time, the first wire harness group 11 is used to implement the charge-discharge of the charge-discharge assembly to each battery cell 200, and the second wire harness group 12 is used to detect the actual voltage value of each battery cell 200 during the test and transmit it to the charge-discharge assembly. In this way, the voltage difference of each battery cell 200 during the test can be monitored in real time.

[0072] If the voltage difference of each battery cell 200 is large, the end of the second wire harness group 12 connected to the charge-discharge assembly is connected to the equalization assembly, which can perform equalization processing on each battery cell 200 to adjust the voltage difference between each battery cell 200, so that each battery cell 200 can be properly charged and discharged, and problems such as performance degradation of the battery cell 200 caused by excessive voltage difference can be reduced.

[0073] In the specific operation process, first, the first wire harness group 11 and the second wire harness group 12 are both connected between each battery cell 200 and the charge-discharge assembly, wherein the first wire harness group 11 implements the charge-discharge of the charge-discharge assembly to each battery cell 200, and the second wire harness group 12 detects the voltage of each battery cell 200 in real time and transmits it to the charge-discharge assembly.

[0074] When it is found that the voltage difference between each battery cell 200 is large, the end of the second wire harness group 12 is removed from the charge-discharge assembly and connected to the equalization assembly, and the equalization assembly is used to perform equalization processing on each battery cell 200 to adjust the voltage difference between each battery cell 200. After adjustment, the second wire harness group 12 is reconnected to the charge-discharge assembly.

[0075] Of course, a preset time can also be set, and after the charge-discharge continues for the preset time, the end of the second wire harness group 12 is transferred from the charge-discharge assembly to the equalization assembly to perform equalization processing on each battery cell 200, and after the equalization processing is completed, the second wire harness group 12 is connected to the charge-discharge assembly.

[0076] Through the above structure, not only the aging test of each battery cell 200 can be successfully implemented, but also the voltage difference between each battery cell 200 can be monitored and adjusted during the aging test, so that each battery cell 200 can be properly charged and discharged, thereby improving the accuracy of the aging test results.

[0077] Please refer to Figure 1 , Figure 3 and Figure 4In some embodiments, the aging test device 100 comprises a limiting assembly 20 and a conductive assembly 30. The limiting assembly 20 comprises a plurality of detection positions 21 for one-to-one fixing of each battery cell 200. The conductive assembly 30 is arranged on the limiting assembly 20 and is used to connect the battery cells 200 on each detection position 21 in series to the connecting assembly 10.

[0078] Specifically, the limiting assembly 20 refers to a structure capable of bearing each battery cell 200 and fixing each battery cell 200 one-to-one to each detection position 21. During the aging test of the battery cells 200, in order to improve the test efficiency, a plurality of battery cells 200 are usually tested at the same time. Therefore, positioning a plurality of battery cells 200 on the corresponding detection positions 21 at the same time can facilitate subsequent connection and testing of each battery cell 200.

[0079] The limiting assembly 20 has a plurality of detection positions 21, each detection position 21 is used to fix one battery cell 200, so that a plurality of battery cells 200 are arranged in a predetermined position on the limiting assembly 20, so as to facilitate the subsequent series connection and detection of each battery cell 200.

[0080] The conductive assembly 30 refers to a structure capable of realizing the series connection between each battery cell 200 and the connecting assembly 10. One end of the conductive assembly 30 is connected to each battery cell 200 one-to-one, and the other end is connected to the connecting assembly 10, thereby realizing the series connection between each battery cell 200 and the connecting assembly 10.

[0081] Further, in actual operation, first, a plurality of battery cells 200 are fixed one-to-one to each detection position 21, then the conductive assembly 30 is connected to each battery cell 200, and then each battery cell 200 is connected to the connecting assembly 10 through the conductive assembly 30, and finally the series connection between each battery cell 200 and the charging and discharging assembly or the balancing assembly is realized through the connecting assembly 10.

[0082] Through the above structure, the fixation of each battery cell 200 can be realized, so as to facilitate the series connection of each battery cell 200 to the charging and discharging assembly or the balancing assembly through the connecting assembly 10.

[0083] In some embodiments, the limiting assembly 20 comprises a limiting tray 22 and a limiting support 23. The limiting support 23 and each detection position 21 are arranged on the limiting tray 22. The conductive assembly 30 is arranged on the limiting support 23 and is used to electrically connect to the electrode terminals of each battery cell 200 on the detection position 21.

[0084] Specifically, the limiting tray 22 can carry the battery monomers 200, the detection sites 21 are arranged on the limiting tray 22, the battery monomers 200 are placed on the limiting tray 22, and the battery monomers 200 are fixed on the corresponding detection sites 21, so that the positioning and fixing of the battery monomers 200 are realized.

[0085] The limiting support 23 is also arranged on the limiting tray 22, that is, the limiting support 23 is erected on the limiting tray 22, and then the conductive assembly 30 is arranged on the limiting support 23. When the battery monomers 200 are fixed on the corresponding detection sites 21, the bottom surface of the battery monomers 200 is supported on the detection sites 21, and the electrode terminals of the battery monomers 200 are arranged upward.

[0086] Therefore, the conductive assembly 30 can be electrically connected with the electrode terminals of the battery monomers 200 from top to bottom, so that the series connection of the battery monomers 200 is realized.

[0087] Through the above structure, a plurality of battery monomers 200 can be fixed on the limiting tray 22 at the same time, and the series connection between the battery monomers 200 is realized through the conductive assembly 30, so as to facilitate the aging test.

[0088] In some embodiments, the limiting assembly 20 further includes a first limiting piece 24 and a second limiting piece 25. The first limiting piece 24 is movably arranged on the limiting tray 22 along a first direction a, and is used for limiting the battery monomers 200 to the corresponding detection sites 21 along the first direction a. The second limiting piece 25 is movably arranged on the limiting tray 22 along a second direction b, and is used for limiting the battery monomers 200 to the corresponding detection sites 21 along the second direction b. Wherein, the first direction a and the second direction b are both parallel to the limiting tray 22, and are arranged intersecting each other.

[0089] Specifically, the limiting tray 22 can be arranged as a rectangular tray, wherein the first direction a can be arranged as the length direction of the rectangular tray, and the second direction b can be arranged as the width direction of the rectangular tray, that is, the first direction a and the second direction b are perpendicular to each other.

[0090] The first limiting piece 24 can be but not limited to a first limiting block, which is protrudingly arranged on the limiting tray 22 and movably arranged along the first direction a. Wherein, the first limiting block includes a plurality of and is arranged at intervals along the first direction a. Therefore, each adjacent two first limiting blocks can define a detection site 21, and by moving the first limiting block along the first direction a, the position and size of the detection site 21 in the first direction a can be adjusted.

[0091] Further, the second limiting member 25 can be, but is not limited to, a second limiting block protruding on the limiting tray 22 and movably arranged along the second direction b. The second limiting block includes a plurality of limiting blocks and is arranged at intervals along the second direction b. Thus, each adjacent two second limiting blocks can define a detection position 21, and the position and size of the detection position 21 along the second direction b can be adjusted by moving the second limiting blocks.

[0092] That is, the first limiting block and the second limiting block jointly define a plurality of detection positions 21, and the position and size of the corresponding detection position 21 can be adjusted by moving the first limiting block and the second limiting block, so that each detection position 21 can match the size of the corresponding battery monomer 200, and the spacing between adjacent battery monomers 200 can also be more accurately adjusted, so that each battery monomer 200 can be arranged corresponding to the conductive assembly 30, so that the conductive assembly 30 can be connected with the electrode terminal of the battery monomer 200.

[0093] Through the above structure, each detection position 21 on the limiting tray 22 can better adapt to battery monomers 200 of different sizes and different specifications, and the practicability of the aging test device 100 can be improved.

[0094] In some embodiments, the conductive assembly 30 is movably arranged on the limiting support 23 along a third direction c, and the third direction c intersects the limiting tray 22.

[0095] Specifically, the third direction c can be arranged perpendicular to the limiting tray 22, and the limiting tray 22 is usually horizontally placed, so the third direction c is arranged vertically.

[0096] The conductive assembly 30 is movably arranged on the limiting support 23 along the third direction c, so that the conductive assembly 30 is first moved upward to be away from the limiting tray 22, so as to correspondingly fix each battery monomer 200 on the detection position 21. Then, the conductive assembly 30 is moved downward, so that the conductive assembly 30 can be connected with the electrode terminal of the corresponding battery monomer 200, thereby realizing the series connection of each battery monomer 200.

[0097] Through the above structure, the fixation of each battery monomer 200 on the limiting tray 22 can be more conveniently realized, and various battery monomers 200 of different sizes and different specifications can be adapted, so that the conductive assembly 30 can be better connected with the electrode terminal of the battery monomer 200.

[0098] In some embodiments, the limiting assembly 20 further comprises a threaded rod 26 and a linear bearing 27, the threaded rod 26 is connected with the limiting bracket 23 and extends along the third direction c, the linear bearing 27 is connected between the threaded rod 26 and the conductive assembly 30, and is used to drive the conductive assembly 30 to move on the threaded rod 26.

[0099] Specifically, the threaded rod 26 extends along the third direction c, that is, the threaded rod 26 is vertically arranged, the bottom end of the threaded rod 26 is fixed on the limiting tray 22, and the threaded rod 26 is fixedly connected with the limiting bracket 23, so that the threaded rod 26 can be more stable.

[0100] Further, the linear bearing 27 is connected with the threaded rod 26, and when the threaded rod 26 is rotated, the linear bearing 27 can be driven to move in the vertical direction. In addition, the linear bearing 27 is connected with the conductive assembly 30, and when the linear bearing 27 moves in the vertical direction, the conductive assembly 30 can be driven to move in the vertical direction synchronously.

[0101] Therefore, through the above structure, the movement of the conductive assembly 30 in the vertical direction can be realized, so that the conductive assembly 30 can adapt to different sizes and different specifications of the battery monomer 200 and be smoothly connected therewith.

[0102] In some embodiments, the conductive assembly 30 comprises a mounting plate 31 and at least one probe 32, the mounting plate 31 is connected with the linear bearing 27 and extends along the first direction a, and each probe 32 is arranged on the mounting plate 31 along the first direction a.

[0103] Specifically, the mounting plate 31 extends along the first direction a, and at least one end of the mounting plate 31 is connected with the linear bearing 27. In this way, when the linear bearing 27 moves in the vertical direction, the mounting plate 31 can be driven to move in the vertical direction synchronously.

[0104] Each probe 32 is arranged on the mounting plate 31 along the first direction a, wherein the interval between adjacent probes 32 can be fixed or adjustable. When the interval between adjacent probes 32 is fixed, the specific position of each battery monomer 200 can be adjusted by adjusting the specific position of each detection site 21, so that each battery monomer 200 is arranged relative to the corresponding probe 32, and the probe 32 and the electrode terminal of the battery monomer 200 are connected.

[0105] Of course, each probe 32 can also be movably arranged on the mounting plate 31 along the first direction a, so that the specific position between the probe 32 and the electrode terminal of the corresponding battery monomer 200 is fine-tuned by the movement of the probe 32 in the first direction a, so that they can be more smoothly connected.

[0106] Through the above structure, since each probe 32 is arranged on the mounting plate 31, when the mounting plate 31 is driven by the linear bearing 27 to move in the vertical direction, each probe 32 can move synchronously in the vertical direction, and the operation is more convenient.

[0107] As shown in Figure 5 some embodiments, each probe 32 is movably arranged on the mounting plate 31 along the third direction c, and the conductive assembly 30 further comprises an elastic member 33 connected between the corresponding probe 32 and the mounting plate 31, and used to provide a buffering force when the probe 32 abuts against the electrode terminal.

[0108] Specifically, the elastic member 33 can be but not limited to a spring, and the spring is connected between the corresponding probe 32 and the mounting plate 31. In this way, when the mounting plate 31 drives all the probes 32 thereon to move in the vertical direction to the target position, the probe 32 abuts against the electrode terminal of the corresponding battery monomer 200, and the spring can provide a buffering force, so that the probe 32 can more stably abut against the electrode terminal.

[0109] In addition, the buffering force provided by the spring can also compensate for the height difference of different probes 32 and corresponding electrode terminals in the vertical direction, so that each probe 32 can more stably abut against the corresponding electrode terminal.

[0110] Through the above structure, the probe 32 can more stably abut against the electrode terminal of the corresponding battery monomer 200, so that the connection between the probe 32 and the corresponding battery monomer 200 is more stable.

[0111] As shown in Figure 1 and Figure 4 some embodiments, two mounting plates 31 are a group and are movably arranged on the corresponding linear bearing 27 along the second direction b. The conductive assembly 30 comprises at least one group of mounting plates 31.

[0112] It should be noted that each battery monomer 200 has two electrode terminals, namely a positive electrode terminal and a negative electrode terminal, so that each two mounting plates 31 are a group, and the probe 32 on one of the mounting plates 31 abuts against the positive electrode terminal of the battery monomer 200, and the probe 32 on the other mounting plate 31 abuts against the negative electrode terminal of the battery monomer 200, so as to realize the smooth series connection of the battery monomer 200.

[0113] Further, each mounting plate 31 is movably arranged on the corresponding linear bearing 27 along the second direction b. The movement of the mounting plate 31 along the second direction b can be achieved by arranging a plurality of screw holes on the linear bearing 27 and the mounting plate 31, or by a sliding rail or other means, which will not be described herein.

[0114] Through the above structure, the probes 32 on each mounting plate 31 can be more accurately connected to the electrode terminals of the corresponding battery monomer 200, and the aging test of each battery monomer 200 can be smoothly realized.

[0115] In some embodiments, the aging test device 100 further comprises an elbow clamp assembly 40, which has a clamping state of simultaneously clamping at least one group of mounting plates 31 and a separation state of separating from the corresponding mounting plates 31 under the action of external force.

[0116] Specifically, the clamping state of the elbow clamp assembly 40 refers to that the elbow clamp assembly 40 clamps the mounting plate 31 to fix the position of the mounting plate 31, so that the probes 32 on the mounting plate 31 can more stably abut against the electrode terminals of the corresponding battery monomer 200. The separation state of the elbow clamp assembly 40 refers to that the elbow clamp assembly 40 releases the corresponding mounting plate 31, so as to adjust the position of the mounting plate 31.

[0117] In actual operation, the elbow clamp assembly 40 is in the separation state at the beginning, that is, the elbow clamp assembly 40 releases the corresponding mounting plate 31. At this time, the position of the mounting plate 31 in the vertical direction and the horizontal direction can be adjusted, so that the probes 32 on the mounting plate 31 can smoothly abut against the electrode terminals of the battery monomer 200.

[0118] When the probes 32 and the electrode terminals are smoothly abutted, the elbow clamp assembly 40 is switched from the separation state to the clamping state, that is, the elbow clamp assembly 40 clamps the mounting plate 31 to fix the position of the mounting plate 31, so that the probes 32 on the mounting plate 31 can stably abut against the electrode terminals of the battery monomer 200.

[0119] Further, when the elbow clamp assembly 40 is in the clamping state, it can clamp one group of mounting plates 31 at the same time, that is, clamp two mounting plates 31 in the group at the same time, so that the two mounting plates 31 remain relatively stable, thereby maintaining the stability between the probes 32 on the two mounting plates 31 and the corresponding electrode terminals.

[0120] Of course, according to actual operation requirements, the elbow clamp assembly 40 can clamp two or more groups of mounting plates 31 at the same time, so as to simultaneously maintain the stability between the mounting plates 31 in each group.

[0121] Through the above structure, the stability in the testing process can be further improved, thereby improving the accuracy of the test results.

[0122] Based on the same concept as the above aging test device 100, the application also provides a battery processing equipment, comprising the aging test device 100 as described above, and the aging test device 100 is used for aging test on the battery monomer 200.

[0123] According to one or more embodiments, in actual application, first, the threaded rod 26 is rotated to drive the mounting plate 31 to move upward through the linear bearing 27. Then, the plurality of battery monomers 200 are placed one by one on the detection position 21 in a one-to-one correspondence, the first limiting block and the second limiting block are moved, and the positions of the battery monomers 200 in the first direction a and the second direction b are adjusted, so that the battery monomers 200 are aligned with the corresponding probes 32.

[0124] Further, after the positions of the battery monomers 200 are fixed, the threaded rod 26 is rotated to drive the mounting plate 31 to move downward through the linear bearing 27 until the probes 32 abut on the electrode terminals of the corresponding battery monomers 200. At the same time, the springs on the probes 32 provide a buffering force when abutting, so that the probes 32 can more stably abut on the electrode terminals.

[0125] After abutting stably, one end of the first wire harness group 11 is connected with the charge-discharge assembly. Since the other end of the first wire harness group 11 has been connected with each probe 32 through the electric wire, when the first wire harness group 11 is connected with the charge-discharge assembly, the connection of each battery monomer 200 with the charge-discharge assembly can be realized.

[0126] At the same time, the second wire harness group 12 is also connected to the charge-discharge assembly. The first wire harness group 11 can realize the charge-discharge of the charge-discharge assembly on each battery monomer 200, and the second wire harness group 12 can monitor the voltage of each battery monomer 200.

[0127] When the voltage difference between each battery monomer 200 is large, the second wire harness group 12 is transferred from the charge-discharge assembly to the equalization assembly, and each battery monomer 200 is subjected to equalization treatment through the equalization assembly to adjust the voltage difference between each battery monomer 200, so that each battery monomer 200 can be properly charged and discharged.

[0128] After the equalization treatment is completed, the second wire harness group 12 is connected with the charge-discharge assembly, and the charge-discharge of the battery monomer 200 is continued.

[0129] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0130] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An aging test device, characterized in that: Used to perform aging tests on multiple battery cells, the aging test device has a charge and discharge mode and a balance mode and includes: A connection assembly including a first wiring harness group and a second wiring harness group; a charge and discharge assembly, configured to charge and discharge each of the battery cells in a charge and discharge mode; and A balancing component, configured to balance the state differences between the battery cells in a balancing mode; The first wiring harness group is configured to connect each battery cell and the charging and discharging assembly in series to form a loop in both the charging and discharging mode and the balancing mode, and the second wiring harness group is configured to connect each battery cell and the balancing assembly in series in the balancing mode.

2. The aging test device according to claim 1, characterized in that: The second wiring harness group is configured to connect each of the battery cells in series with the charge and discharge assembly in a charge and discharge mode, so as to obtain a voltage value of each of the battery cells and transmit the voltage value to the charge and discharge assembly.

3. The aging test device according to claim 1, characterized in that: The aging test device includes a limiting component and a conductive component. The limiting component includes a plurality of detection positions for fixing each battery cell in a one-to-one correspondence. The conductive component is arranged on the limiting component and is used to connect the battery cells on each detection position in series to the connecting component.

4. The aging test device according to claim 3, characterized in that: The limiting assembly includes a limiting tray and a limiting bracket. The limiting bracket and each of the detection positions are arranged on the limiting tray. The conductive assembly is arranged on the limiting bracket and is used to electrically connect to the electrode terminals of each of the battery cells on the detection positions.

5. The aging test device according to claim 4, characterized in that: The limiting assembly further includes a first limiting member and a second limiting member, wherein the first limiting member is movably disposed on the limiting tray along a first direction and is used to limit each of the battery cells to the corresponding detection position along the first direction; The second limiting member is movably provided on the limiting tray along a second direction, and is used to limit each of the battery cells to the corresponding detection position along the second direction; Wherein, the first direction and the second direction are both parallel to the limiting tray and intersect with each other.

6. The aging test device according to claim 5, characterized in that: The conductive component is movably arranged on the limiting bracket along a third direction, and the third direction is arranged to intersect with the limiting tray.

7. The aging test device according to claim 6, characterized in that: The limiting assembly also includes a threaded rod and a linear bearing. The threaded rod is connected to the limiting bracket and extends along the third direction. The linear bearing is connected between the threaded rod and the conductive assembly to drive the conductive assembly to move on the threaded rod.

8. The aging test device according to claim 7, characterized in that: The conductive component includes a mounting plate and at least one probe. The mounting plate is connected to the linear bearing and extends along the first direction. The probes are spaced apart on the mounting plate along the first direction.

9. The aging test device according to claim 8, characterized in that: Each probe is movably arranged on the mounting plate along the third direction. The conductive component also includes an elastic member, which is connected between the corresponding probe and the mounting plate and is used to provide a buffering force when the probe is pressed against the corresponding electrode terminal.

10. The aging test device according to claim 8, characterized in that: The two mounting plates form a group and are movably arranged on the corresponding linear bearings along the second direction; Wherein, the conductive component includes at least one set of the mounting plates.

11. The aging test device according to claim 10, characterized in that: The aging test device further includes a toggle clamp assembly, which, under the action of an external force, has a clamping state of simultaneously clamping at least one group of the mounting plates and a separation state of separating from the corresponding mounting plates.

12. A battery processing device, characterized in that: The aging test device comprises the aging test device according to any one of claims 1 to 11, wherein the aging test device is used to perform an aging test on a battery cell.

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