A negative pressure component, a restraint tray, and a battery charging / discharging device.

Abstract

This utility model provides a negative pressure component, a restraint tray, and a battery charging and discharging device, belonging to the field of lithium battery production equipment. The negative pressure component provided in this application includes multiple negative pressure units, multiple first positioning blocks, and a first floating mechanism. The multiple negative pressure units are arranged at intervals along a first direction; the multiple first positioning blocks are arranged at intervals along the first direction and positioned at one end of the multiple negative pressure units, and are all slidably connected to the first floating mechanism. The first positioning blocks are used to engage with corresponding layers in the restraint tray. Each first positioning block is fixedly connected to a corresponding negative pressure unit. The first floating mechanism is configured to allow the first positioning block to float during the engagement of the corresponding layer, thereby displacing the corresponding negative pressure unit along the first direction, enabling the corresponding negative pressure unit to connect with the corresponding battery filling port. The negative pressure component provided in this application can adapt to the fixed clamping of a constant pressure restraint tray when facing batteries of different thicknesses, ensuring balanced pressure on the battery while ensuring normal battery leakage rate.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment, and in particular to a negative pressure component, a restraint tray, and a battery charging and discharging device. Background Technology

[0002] In the field of lithium-ion battery manufacturing, the formation and capacity testing process is a key step that determines battery performance. This process typically uses a fixed-spacing restraint tray to apply constant pressure to the battery, while a negative pressure component draws out the gas generated after the electrolyte is injected, and a probe component is used to press the battery terminals together for charge and discharge testing.

[0003] However, in traditional fixed-spacing restraint trays, the battery-fixing plates are spaced at a fixed interval along the battery thickness direction. When clamping batteries of varying thicknesses, it's difficult to ensure even pressure distribution. To address this, a constant-pressure restraint tray exists on the market, employing a floating structure design to guarantee uniform pressure on the batteries. However, current negative pressure components or probe assemblies compatible with fixed-spacing restraint trays all use a fixed-spacing design, making them incompatible with constant-pressure restraint trays.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] This invention provides a negative pressure component, a restraint tray, and a battery charging and discharging device, aiming to solve at least one problem existing in the prior art.

[0006] The first aspect of this application provides a negative pressure assembly, including multiple negative pressure units, multiple first positioning blocks, and a first floating mechanism; the multiple negative pressure units are arranged at intervals along a first direction; the multiple first positioning blocks are arranged at intervals along the first direction and disposed at one end of the multiple negative pressure units, and are all slidably connected to the first floating mechanism, wherein the first positioning blocks are used to engage with corresponding shelves in a restraint tray; wherein each first positioning block is fixedly connected to a corresponding negative pressure unit, and the first floating mechanism is configured to enable the first positioning block to float during the engagement of the corresponding shelf, so as to drive the corresponding negative pressure unit to move along the first direction, so that the corresponding negative pressure unit can dock with the corresponding battery filling port.

[0007] In some embodiments, the first floating mechanism includes a first linear guide rail and a first floating spring; the first linear guide rail is arranged along a first direction, and a plurality of first positioning blocks are slidably connected to the linear guide rail; a plurality of first floating springs are provided, each first floating spring being connected between two adjacent first positioning blocks, so that the first positioning blocks can float during the engagement of corresponding layer plates.

[0008] In some embodiments, a support mechanism is also included, comprising a support frame and a mounting bracket; the support frame is connected to the mounting bracket, and both ends of the mounting bracket are used to connect restraint trays; a first linear guide rail is disposed on the mounting bracket, and multiple negative pressure units are disposed within the support frame; the first floating mechanism further includes a first return spring, which is connected along a first direction between multiple first positioning blocks and one end of the mounting bracket, and the first return spring is configured to drive the first positioning blocks to return to their original positions when the first positioning blocks are not engaged with the shelf.

[0009] In some embodiments, the negative pressure unit includes a negative pressure cup and a negative pressure nozzle; the negative pressure cup is housed within a support frame; the negative pressure nozzle is connected to the negative pressure cup and is connected to a corresponding first positioning block.

[0010] In some implementations, one end of the mounting bracket is provided with a negative pressure connector; the negative pressure connector is connected to multiple negative pressure cups.

[0011] In some embodiments, each first positioning block has a latch at the end away from the negative pressure unit that can engage with the corresponding layer; the projection of each latch along the second direction is located between two adjacent negative pressure units.

[0012] The second aspect of this application provides a restraint tray, including the negative pressure assembly as described above, and further including multiple shelves, the restraint assembly, and a tray frame; the multiple shelves are arranged at intervals along a first direction and slidably connected within the tray frame, with the space between two adjacent shelves used for clamping batteries; the restraint assembly is at least partially disposed within the tray frame and disposed at one end of the multiple shelves along the first direction, the restraint assembly being movable toward the multiple shelves and abutting against one end of the multiple shelves along the first direction; the negative pressure assembly is disposed on the tray frame along a second direction, and multiple first positioning blocks engage with corresponding shelves and are able to float with the movement of the corresponding shelves, so that the corresponding negative pressure unit can dock with the corresponding battery filling port.

[0013] In some embodiments, the shelf includes a tray shelf and a battery shelf; the tray shelf is provided with two guide portions arranged at intervals along a third direction, the guide portions being slidably connected to the tray frame; the battery shelf is disposed between the two guide portions for applying pressure to the battery; one of the guide portions can engage with a first positioning block.

[0014] In some embodiments, the restraint assembly includes a restraint layer and a locking screw; the restraint layer is slidably connected within a tray frame and disposed at one end of a plurality of layers along a first direction; one end of the locking screw along the first direction is connected to the restraint layer, the other end passes through the tray frame, and is capable of rotating based on the tray frame to apply pressure to the restraint layer.

[0015] In some embodiments, the pallet frame includes a first end plate, a second end plate, a support plate, and a plurality of guide rods; the first end plate and the second end plate are spaced apart at both ends of the support plate along a first direction and are respectively connected to the support plate; the plurality of guide rods are arranged between the first end plate and the second end plate along the first direction and are respectively connected to the first end plate and the second end plate; a plurality of shelves and restraint shelves are slidably connected to the guide rods, and the end of the locking screw away from the restraint shelf is connected to the second end plate.

[0016] In some embodiments, the second end plate is further provided with a restraint rod through hole for the pressure rod of the restraint device to pass through and apply pressure to the restraint layer plate.

[0017] A third aspect of this application provides a battery charging and discharging device, including a restraint tray as described above, and a mechanical unit. The mechanical unit includes a first probe assembly, a fixed frame assembly, a tray positioning assembly, and a drive mechanism. The tray positioning assembly is disposed within the fixed frame assembly and slidably connected to the fixed frame assembly, and is used to support the restraint tray. The drive mechanism is connected to the fixed frame assembly and to the tray positioning assembly, and is capable of driving the tray positioning assembly to move along a second direction. The first probe assembly is disposed on the fixed frame assembly and includes a plurality of first probe units spaced apart along a first direction, a plurality of second positioning blocks, and a second floating mechanism. The plurality of second positioning blocks are slidably connected to the second floating mechanism, and each first probe unit is connected to a second positioning block. The second positioning blocks are used to engage with corresponding shelves within the restraint tray. The second floating mechanism is configured to enable the second positioning blocks to float during the engagement of corresponding shelves, thereby driving the corresponding first probe units to displace along the first direction, so that the corresponding first probe units can press against a corresponding battery terminal.

[0018] In some embodiments, the second floating mechanism includes a second linear guide rail and a second floating spring; the second linear guide rail is arranged along a first direction, and a plurality of second positioning blocks are slidably connected to the linear guide rail; a plurality of second floating springs are provided, each second floating spring being connected between two adjacent second positioning blocks, so that the second positioning blocks can float during the engagement of corresponding layer plates.

[0019] In some embodiments, a support member is also included, which is connected to the fixed frame assembly; a second linear guide is disposed on the support member; the second floating mechanism further includes a second return spring, which is connected along a first direction between a plurality of second positioning blocks and one end of the support member, and the second return spring is configured to drive the second positioning blocks to reset when the second positioning blocks are not engaged with the shelf.

[0020] In some embodiments, the mechanical unit further includes a second probe assembly and a movable frame assembly; the second probe assembly is disposed on the movable frame assembly; a tray positioning assembly is arranged along a second direction between the movable frame assembly and the first probe assembly; the movable frame assembly is slidably connected to the fixed frame assembly and connected to a drive mechanism; the drive mechanism is capable of driving the movable frame assembly to move so that the second probe assembly can press against the other terminal of the battery.

[0021] In some embodiments, the mechanical unit also includes a transmission assembly disposed on the pallet positioning assembly for transporting an externally restrained pallet to the pallet positioning assembly.

[0022] In some embodiments, the fixed frame assembly includes a first fixed frame, a second fixed frame, a plurality of guide posts, a plurality of first limiting rods, and a plurality of second limiting rods; the first fixed frame and the second fixed frame are arranged at intervals along a second direction, and the first probe assembly and the drive mechanism are connected to the first fixed frame; the plurality of guide posts are arranged at intervals between each other and along the second direction between the first fixed frame and the second fixed frame, and each guide post is connected to the first fixed frame and the second fixed frame respectively; a tray positioning assembly is arranged along the second direction between the first fixed frame and the second fixed frame, and a movable frame assembly is arranged along the second direction between the tray positioning assembly and the second fixed frame, and the tray positioning assembly and the movable frame assembly are slidably connected to the guide posts respectively; the plurality of first limiting rods are spaced apart from each other, and one end of each first limiting rod is connected to the first fixed frame along the second direction to limit the maximum displacement of the restraint tray toward the first probe assembly; the plurality of second limiting rods are spaced apart from each other, and one end of each second limiting rod is connected to the second fixed frame along the second direction to limit the maximum displacement of the second probe assembly toward the restraint tray.

[0023] Compared with the prior art, the negative pressure component, restraint tray, and battery charging / discharging equipment provided in this application have at least the following advantages:

[0024] Beneficial effects:

[0025] Through the structural design of the negative pressure assembly, the negative pressure assembly includes multiple negative pressure units, multiple first positioning blocks, and a first floating mechanism; the multiple negative pressure units are arranged at intervals along a first direction for docking with corresponding batteries arranged at intervals along the first direction; the multiple first positioning blocks are arranged at intervals along the first direction and are placed at one end of the multiple negative pressure units, and are all slidably connected to the first floating mechanism. The first positioning blocks are used to engage with the corresponding shelf in the restraint tray. Each first positioning block is fixedly connected to a corresponding negative pressure unit. During the engagement of the corresponding shelf, the first positioning block can perform adaptive floating motion under the action of the shelf with the help of the first floating mechanism, thereby driving the negative pressure unit connected to it to move along the first direction, so that each negative pressure unit can dock with the corresponding battery filling port.

[0026] Therefore, the negative pressure component provided in this application can be adapted to the restraint tray structure that performs battery restraint with a constant pressure to ensure that the pressure on the battery is balanced. The first positioning block performs adaptive floating motion based on the first floating mechanism when the plate is engaged, driving the corresponding negative pressure unit to move synchronously to compensate for the assembly position deviation of the battery injection port caused by different battery thicknesses, so as to ensure that the battery leakage rate is normal and meet the battery charging and discharging process under the premise of uneven and inconsistent battery thickness. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an isometric schematic diagram of the negative pressure component provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of a negative pressure component provided in an embodiment of this application.

[0030] Figure 3 This is an isometric schematic diagram of the restraint tray provided in the embodiments of this application;

[0031] Figure 4 This is a partial isometric view of the restraint tray provided in an embodiment of this application;

[0032] Figure 5 A partial structural schematic diagram of the restraint tray provided in an embodiment of this application;

[0033] Figure 6 A partial top view of the restraint tray provided in an embodiment of this application;

[0034] Figure 7 A schematic diagram of a restraint tray provided in an embodiment of this application;

[0035] Figure 8 This is a left view of the battery charging and discharging device provided in an embodiment of this application;

[0036] Figure 9 An isometric schematic diagram of the first probe assembly provided in an embodiment of this application;

[0037] Figure 10 A front view of the first probe assembly provided in an embodiment of this application;

[0038] Figure 11This is an isometric schematic diagram of the mechanical unit provided in the embodiments of this application;

[0039] Figure 12 This is a front view of the battery charging and discharging device provided in an embodiment of this application.

[0040] The attached figures are labeled as follows:

[0041] 100. Negative pressure components;

[0042] 110. Negative pressure unit; 111. Negative pressure cup; 112. Negative pressure nozzle;

[0043] 120. First positioning block; 121. Bayonet;

[0044] 130. First floating mechanism; 131. First linear guide rail; 132. First floating spring; 133. First return spring;

[0045] 140. Support mechanism; 141. Support frame; 142. Mounting bracket; 142A. Negative pressure connector;

[0046] 10. Restraint tray;

[0047] 200. Shelf; 210. Tray shelf; 211. Guide section; 220. Battery shelf;

[0048] 300. Restraint assembly; 310. Restraint shelf; 320. Locking screw;

[0049] 400, Pallet frame; 410, First end plate; 420, Second end plate; 421, Restraint rod through hole; 430, Support plate; 440, Guide rod;

[0050] 1. Battery charging and discharging equipment;

[0051] 20. Mechanical unit;

[0052] 500, First probe assembly; 510, First probe unit; 520, Second positioning block; 530, Second floating mechanism; 531, Second linear guide rail; 532, Second floating spring; 533, Second return spring; 540, Support member;

[0053] 600, Fixed frame assembly; 610, First fixed frame; 620, Second fixed frame; 630, Guide post; 640, First limiting rod; 650, Second limiting rod;

[0054] 700. Pallet positioning assembly;

[0055] 800. Second probe assembly;

[0056] 900. Activity framework components;

[0057] 1000. Transmission components;

[0058] 1100, Negative Pressure Connection Assembly;

[0059] X, first direction; Z, second direction; Y, third direction. Detailed Implementation

[0060] To make the above and other features and advantages of this application clearer, the application is further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art, and are exemplary only, not restrictive.

[0061] In the following description, numerous specific details are set forth to provide a thorough understanding of this application. However, it will be apparent to those skilled in the art that the specific details are not required to practice this application. In other instances, well-known steps or operations have not been described in detail to avoid obscuring this application.

[0062] In the description of this application, it should be understood that the use of terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" to indicate orientation or positional relationship, unless otherwise specified, is understood to be based on the orientation or positional relationship shown in the accompanying drawings, and 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0063] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this application, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] It should be noted that the fixed-spacing restraint tray described in this application refers to a tray structure that clamps batteries by rigidly fixing the spacing between the shelves. The shelf spacing is not adjustable, and it can only clamp batteries with exactly the same thickness. The pressure on the battery depends on the shelf spacing; if the thickness exceeds the tolerance, it will lead to overpressure. The constant-pressure restraint tray described in this application refers to a tray frame in which the shelves are slidably connected to the tray frame via linear guides / spring assemblies. The shelves can be displaced along the battery stacking direction to clamp batteries of different thicknesses and ensure that the pressure on the batteries is balanced.

[0067] Unless otherwise specified, the first direction X in this application description is defined by the spaced arrangement direction of the plurality of shelves 200 within the restraint tray 10, the second direction Z is defined by the height direction, and the third direction Y is defined by the direction perpendicular to the plane formed by the first direction X and the second direction Z. For details, please refer to [reference needed]. Figure 1-12 The symbol is shown in the image.

[0068] As mentioned above, the general concept of this application embodiment is to provide a negative pressure component 100, a restraint tray 10, and a battery charging and discharging device 1. By designing the structure of the negative pressure component 100, an independent floating first positioning block 120 is combined with a linkage structure of the corresponding negative pressure unit 110. When the negative pressure component 100 engages with the shelf 200 of the restraint tray 10, the first positioning block 120 floats under the action of the shelf 200, driving the corresponding negative pressure unit 110 to move. This ensures that the negative pressure unit 110 is precisely connected to the corresponding battery filling port, thus adapting to the floating structure design of the constant pressure restraint tray when fixing batteries of different thicknesses.

[0069] Based on the above ideas, and referring to Figure 1-7As shown, this application embodiment provides a negative pressure assembly 100, including multiple negative pressure units 110, multiple first positioning blocks 120, and a first floating mechanism 130; the multiple negative pressure units 110 are arranged at intervals along a first direction X; the multiple first positioning blocks 120 are arranged at intervals along the first direction X and are arranged at one end of the multiple negative pressure units 110, and are all slidably connected to the first floating mechanism 130. The first positioning blocks 120 are used to engage with the corresponding shelf 200 in the restraint tray 10; wherein, each first positioning block 120 is fixedly connected to a corresponding negative pressure unit 110, and the first floating mechanism 130 is configured to enable the first positioning blocks 120 to float during the engagement of the corresponding shelf 200, so as to drive the corresponding negative pressure unit 110 to move along the first direction X, so that the corresponding negative pressure unit 110 can dock with the corresponding battery filling port.

[0070] It is understood that the multiple shelves 200 within the constant pressure restraint tray 10 may experience irregular floating due to differences in battery thickness. In this embodiment, the negative pressure assembly 100 includes multiple negative pressure units 110, multiple first positioning blocks 120, and a first floating mechanism 130. The first positioning blocks 120 are rigidly connected to the corresponding negative pressure units 110 to form independent motion units, which cooperate with the corresponding shelves 200. When a shelf 200 floats and shifts along the first direction X due to differences in battery thickness, the first positioning blocks 120 that engage the shelf 200 shift synchronously through the first floating mechanism 130, thereby driving the negative pressure units 110 to compensate for positional deviations in real time. This allows the negative pressure units 110 to track the battery injection port position in real time, achieving dynamic and precise docking and ensuring normal battery leakage rate.

[0071] refer to Figure 1 and Figure 2 As shown, in some embodiments, the first floating mechanism 130 includes a first linear guide rail 131 and a first floating spring 132; the first linear guide rail 131 is arranged along a first direction X, and a plurality of first positioning blocks 120 are slidably connected to the first linear guide rail 131; a plurality of first floating springs 132 are provided, and each first floating spring 132 is connected between two adjacent first positioning blocks 120 so that the first positioning blocks 120 float during the engagement of the corresponding layer plate 200.

[0072] In this embodiment, the first linear guide rail 131 is fixedly laid along the battery stacking direction, i.e., the first direction X, to provide a sliding path for multiple first positioning blocks 120. Multiple first floating springs 132 are designed, and each first floating spring 132 is connected between two adjacent first positioning blocks 120 to form a series elastic floating unit. When the shelf 200 of the restraint tray 10 floats along the X direction due to the difference in battery thickness, the first positioning block 120 is subjected to the displacement force generated by the difference in battery thickness of the shelf 200 and slides along the first linear guide rail 131. The first floating springs 132 between adjacent first positioning blocks 120 undergo compression or stretching deformation. The displacement of the first positioning block 120 is transmitted to the corresponding negative pressure unit 110 through a rigid connection to drive the negative pressure unit 110 to move synchronously along the X direction, thereby covering the battery injection port in real time and ensuring that the negative pressure unit 110 is accurately connected to the battery injection port. In addition, the first floating spring 132 serves as a mechanical buffer medium between adjacent first positioning blocks 120, enabling each first positioning block 120 and its corresponding negative pressure unit 110 to form an independent motion unit, thereby eliminating motion interference caused by multi-battery clamping.

[0073] Continue to refer to Figure 1 and Figure 2 As shown, in some embodiments, the negative pressure assembly 100 further includes a support mechanism 140, which includes a support frame 141 and a mounting bracket 142; the support frame 141 is connected to the mounting bracket 142, and the two ends of the mounting bracket 142 are used to connect the restraint tray 10; a first linear guide rail 131 is disposed on the mounting bracket 142, and a plurality of negative pressure units 110 are disposed within the support frame 141.

[0074] The support frame 141 is connected to the top of the mounting bracket 142 along the second direction, forming a receiving cavity in which all negative pressure units 110 are received. The two ends of the mounting bracket 142 are used to connect the restraint tray 10 along the second direction Z. For example, the two ends of the mounting bracket 142 can be fixed to the restraint tray 10 by the cooperation of positioning pins and latches to achieve modular quick release. The first linear guide rail 131 is provided on the mounting bracket 142, for example, at the bottom of the mounting bracket 142, so that all the first positioning blocks 120 are located at the bottom of the mounting bracket 142 to engage the shelf 200 in the restraint tray 10 along the second direction Z.

[0075] To achieve the reset of the first positioning block 120 and the negative pressure unit 110 after the battery is unloaded, the first floating mechanism 130 further includes a first reset spring 133. The first reset spring 133 is connected along the first direction X between the plurality of first positioning blocks 120 and one end of the mounting bracket 142. The first reset spring 133 is configured to drive the first positioning block 120 to reset when the first positioning block 120 is not engaged with the layer plate 200.

[0076] The first reset spring 133 is connected between the first positioning block 120 and the end of the mounting bracket 142 along the first direction X. When the layer plate 200 is engaged, the first positioning block 120 slides along the first linear guide rail 131 to compress the first reset spring 133 to store energy, and at the same time drives the negative pressure unit 110 to move to connect with the battery filling port. When the first positioning block 120 is not engaged with the layer plate 200, the first reset spring 133 pulls all the first positioning blocks 120 to return to the zero position synchronously, realizing reset, so as to facilitate the adaptation to high-frequency battery replacement.

[0077] refer to Figure 2 As shown, in some embodiments, the negative pressure unit 110 includes a negative pressure cup 111 and a negative pressure nozzle 112; the negative pressure cup 111 is housed within the support frame 141; the negative pressure nozzle 112 is connected to the negative pressure cup 111 and is connected to the corresponding first positioning block 120.

[0078] In this embodiment, a single negative pressure unit 110 consists of a negative pressure cup 111 and a negative pressure nozzle 112 forming a core sealing structure. The negative pressure cup 111 is sealed and housed within the support frame 141. The negative pressure nozzle 112 is rigidly connected to the bottom of the negative pressure cup 111. The outlet end of the negative pressure nozzle 112 is directly fixed to the corresponding first positioning block 120. When the first positioning block 120 is driven by the layer plate 200 to float along the first direction X, the negative pressure nozzle 112 moves synchronously, so that the port of the negative pressure nozzle 112 covers the battery filling port in real time for precise docking. The negative pressure cup 111 is stably suspended through the receiving cavity of the support frame 141.

[0079] To provide negative pressure, in some embodiments, one end of the mounting bracket 142 is provided with a negative pressure connector 142A; the negative pressure connector 142A is connected to a plurality of negative pressure cups 111.

[0080] refer to Figure 1 The mounting bracket 142 is also provided with a negative pressure connector 142A at one end near the first reset spring 133. The negative pressure connector 142A can be connected to a negative pressure device to form a negative pressure. The negative pressure connector 142A is connected to each negative pressure cup 111, so that the negative pressure suction nozzle 112 can also form a negative pressure, thereby performing a negative pressure suction operation when connected to the corresponding battery filling port.

[0081] In some embodiments, each first positioning block 120 is provided with a slot 121 at one end away from the negative pressure unit 110, which can engage with the corresponding layer plate 200; the projection of each slot 121 along the second direction Z is located between two adjacent negative pressure units 110.

[0082] In this embodiment, the first positioning block 120 engages with the corresponding shelf 200 along the second direction Z. The bottom of the first positioning block 120 can be designed with a slot 121 that matches the top of the corresponding shelf 200 to facilitate engagement with the top of the shelf 200. For example... Figure 2As shown, the bayonet 121 can be an "n" shaped opening. The projection of each bayonet 121 along the second direction Z is located between two adjacent negative pressure units 110. That is, after the bayonet 121 engages with the corresponding shelf 200, the battery located between the two shelves 200 can be precisely aligned with the top negative pressure unit 110, avoiding interference with the docking process between the negative pressure nozzle 112 and the battery filling port.

[0083] refer to Figure 3-7 As shown, another embodiment of this application provides a restraint tray 10, including the negative pressure component 100 as described above, and also including multiple shelves 200, restraint components 300, and a tray frame 400; the multiple shelves 200 are arranged at intervals along a first direction X and slidably connected within the tray frame 400, and the space between two adjacent shelves 200 is used for clamping batteries; the restraint components 300 are at least partially disposed within the tray frame 400 and disposed at one end of the multiple shelves 200 along the first direction X, and the restraint components 300 can move toward the multiple shelves 200 and abut against one end of the multiple shelves 200 along the first direction X; the negative pressure component 100 is disposed on the tray frame 400 along a second direction Z, and multiple first positioning blocks 120 engage with the corresponding shelves 200 and can float with the movement of the corresponding shelves 200, so that the corresponding negative pressure unit 110 can dock with the corresponding battery filling port.

[0084] It is understood that the restraint tray 10 provided in this application embodiment is a constant pressure restraint tray 10, such as Figure 3 As shown, in the restraint tray 10, multiple shelves 200 are slidably connected to the tray frame 400 along the first direction X (battery stacking direction). The adjacent shelves 200 are used to clamp batteries, so the spacing between adjacent shelves 200 can adapt to battery thickness fluctuations. The restraint assembly 300 abuts against one end of the multiple shelves 200 along the first direction X to apply restraint pressure to the multiple shelves 200, thereby making the multiple batteries pressurized evenly. The negative pressure assembly 100 is installed on the tray frame 400 along the second direction Z. Specifically, the mounting bracket 142 of the negative pressure assembly 100 is connected to the tray frame 400 at both ends. The latch 121 of the first positioning block 120 engages with the top of the shelf 200. When the battery thickness difference drives the shelf 200 to float along the first direction X, the first positioning block 120 moves synchronously, driving the negative pressure nozzle 112 to track the battery injection port in real time to match the charging and discharging process of batteries with different thicknesses.

[0085] refer to Figure 4As shown, in some embodiments, the shelf 200 includes a tray shelf 210 and a battery shelf 220; the tray shelf 210 is provided with two guide portions 211 arranged at intervals along the third direction Y, and the guide portions 211 are slidably connected to the tray frame 400; the battery shelf 220 is disposed between the two guide portions 211 for applying pressure to the battery; one of the guide portions 211 can engage with the first positioning block 120.

[0086] In this embodiment, a single shelf 200 includes a tray shelf 210 and a battery shelf 220. The tray shelf 210 is designed with two guide portions 211 spaced apart along the third direction Y. The battery shelf 220 is disposed between the two guide portions 211 and is used to fit against one side of the battery. Since the two guide portions 211 are slidably connected to the tray frame 400, when the guide portions 211 are subjected to force, pressure can be applied to the battery through the battery shelf 220 to ensure uniform pressure on the battery. Furthermore, since the guide portions 211 need to be displaced along the first direction X to adapt to the battery thickness, one of the two guide portions 211 can engage with the first positioning block 120, thereby driving the first positioning block 120 to move synchronously along the first direction X, and in turn driving the negative pressure unit 110 to move synchronously, ensuring that the negative pressure unit 110 is precisely aligned with the corresponding battery filling port.

[0087] refer to Figure 5 and Figure 6 As shown, in some embodiments, the restraint assembly 300 includes a restraint layer 310 and a locking screw 320; the restraint layer 310 is slidably connected within the tray frame 400 and disposed at one end of a plurality of layers 200 along a first direction X; one end of the locking screw 320 along the first direction X is connected to the restraint layer 310, and the other end passes through the tray frame 400, and is capable of rotating based on the tray frame 400 to apply pressure to the restraint layer 310.

[0088] In this embodiment, the restraint plate 310 is designed at one end of the plurality of plates 200 along the first direction X. The restraint plate 310 abuts against the outermost plate 200 among the plurality of plates 200. The restraint plate 310 is slidably connected within the tray frame 400. One end of the locking screw 320 along the first direction X is connected to the restraint plate 310, and the other end passes through the tray frame 400. By rotating the locking screw 320, the restraint plate 310 is pushed toward the plurality of plates 200 to apply pressure to the battery through the plates 200. At this time, the locking screw 320 can be fixed on the tray frame 400 to maintain the battery under balanced pressure.

[0089] Continue to refer to Figure 4 and Figure 7As shown, in some embodiments, the pallet frame 400 includes a first end plate 410, a second end plate 420, a support plate 430, and a plurality of guide rods 440; the first end plate 410 and the second end plate 420 are spaced apart at both ends of the support plate 430 along a first direction X and are respectively connected to the support plate 430; the plurality of guide rods 440 are arranged between the first end plate 410 and the second end plate 420 along the first direction X and are respectively connected to the first end plate 410 and the second end plate 420; a plurality of shelf plates 200 and a restraint shelf plate 310 are slidably connected to the guide rods 440, and one end of the locking screw 320 away from the restraint shelf plate 310 is connected to the second end plate 420.

[0090] In this embodiment, the first end plate 410 and the second end plate 420 are arranged at intervals along the first direction X. The two ends of the support plate 430 along the first direction X are respectively connected to the bottom of the first end plate 410 and the bottom of the second end plate 420. Each guide rod 440 is connected between the first end plate 410 and the second end plate 420 along the first direction X. The guide portion 211 of each tray shelf 210 is slidably connected to four guide rods 440. These four guide rods 440 are arranged at intervals along the second direction Z. The guide portion 211 can slide on the guide rods 440 and drive the battery shelf 220 connected to it to move to adapt to batteries of different thicknesses. In addition, the restraint shelf 310 is also slidably connected to these guide rods 440. The end of the locking screw 320 away from the restraint shelf 310 is connected to the second end plate 420 to apply pressure to the shelf 200 through the restraint shelf 310 to ensure that the battery is under balanced pressure.

[0091] Furthermore, the first end plate 410 and the second end plate 420 in this embodiment can be used to fix the mounting bracket 142 of the negative pressure assembly 100, such as... Figure 3 As shown, mounting bracket 142 has mounting parts (unlabeled) at both ends, and pin assemblies (unlabeled) are designed on the first end plate 410 and the second end plate 420 respectively. The mounting parts of mounting bracket 142 and the pin assemblies can be fixedly connected along the second direction Z by pins or positioning pins.

[0092] refer to Figure 5 In some embodiments, the second end plate 420 is also provided with a restraint rod through hole 421 for the pressure rod of the restraint device to pass through and apply pressure to the restraint layer plate 310. That is, after the battery is clamped between each layer plate 200, the pressure rod of the restraint device can first pass through and apply pressure to the restraint layer plate 310 to a preset pressure, and then the locking screw 320 is tightened to maintain the pressure, so as to improve the battery loading efficiency.

[0093] refer to Figures 8-12As shown, another embodiment of this application provides a battery charging and discharging device 1, including the restraint tray 10 as described above, and a mechanical unit 20. The mechanical unit 20 includes a first probe assembly 500, a fixed frame assembly 600, a tray positioning assembly 700, and a drive mechanism. The tray positioning assembly 700 is disposed within the fixed frame assembly 600 and slidably connected to the fixed frame assembly 600, for supporting the restraint tray 10. The drive mechanism is connected to the fixed frame assembly 600 and connected to the tray positioning assembly 700, and can drive the tray positioning assembly 700 to move along the second direction Z. The first probe assembly 500 is disposed on the fixed frame assembly 600. The device includes multiple first probe units 510 arranged at intervals along a first direction X, multiple second positioning blocks 520, and a second floating mechanism 530. The multiple second positioning blocks 520 are slidably connected to the second floating mechanism 530. Each first probe unit 510 is connected to a second positioning block 520. The second positioning block 520 is used to engage with the corresponding shelf 200 in the restraint tray 10. The second floating mechanism 530 is configured to enable the second positioning blocks 520 to float during the engagement of the corresponding shelf 200, thereby driving the corresponding first probe unit 510 to move along the first direction X, so that the corresponding first probe unit 510 can press against the corresponding battery terminal.

[0094] In this embodiment, the restraint tray 10 is supported on the tray positioning component 700 during battery charging and discharging. The tray positioning component 700 is arranged inside the fixed frame component 600 and is slidably connected to the fixed frame component 600. The top of the fixed frame component 600 is connected to the first probe component 500. Under the action of the driving mechanism, the tray positioning component 700 can move up and down in the second direction Z within the fixed frame component 600 so that the top terminal of the battery contacts and presses against the first probe component 500.

[0095] It should be understood that, unlike the traditional fixed-spacing probe assembly structure, the first probe assembly 500 in this embodiment is based on the design concept of the negative pressure assembly 100 and also adopts an independent floating second positioning block 520 combined with the linkage structure of the corresponding first probe unit 510. When the first probe assembly 500 presses against the battery corresponding to the restraint tray 10, the second positioning block 520 floats under the action of another guide part 211 of the shelf 200 (i.e., the guide part 211 that is not engaged with the first positioning block 120), driving the corresponding first probe unit 510 to move, thereby ensuring that the first probe unit 510 is accurately pressed against the corresponding battery terminal, so as to adapt to the floating structure design of the fixed pressure restraint tray when facing the fixed clamping of batteries with different thicknesses.

[0096] Specifically, the first probe assembly 500 is similar to the negative pressure assembly 100, including multiple first probe units 510 arranged at intervals along the first direction X, multiple second positioning blocks 520, and a second floating mechanism 530. The second positioning blocks 520 are rigidly connected to the corresponding first probe units 510 to form independent motion units to cooperate with the corresponding shelf 200. When the drive mechanism of the mechanical unit 20 drives the tray positioning assembly 700 to support the restraint tray 10 and move upward along the second direction Z, approaching the first probe assembly 500 on the fixed frame assembly 600, the second positioning block 520 will contact and lock with the top of the corresponding shelf 200 extending from the restraint tray 10. During this process, the second floating mechanism 530 enables the second positioning block 520 to float and displace along the first direction X, thereby driving the first probe unit 510 to compensate for position deviation in real time, so that the first probe unit 510 tracks the position of the corresponding battery terminal in real time and achieves precise pressing. Through the aforementioned floating mechanism, although the positions of different layers 200 and batteries in the first direction X may vary considerably due to the battery thickness, each first probe unit 510 can automatically track and move to the precise position of the corresponding battery terminal. When the drive mechanism continues to drive the tray positioning assembly 700 upward, the first probe unit 510 can reliably and consistently press against the battery terminal, ensuring the electrical connection quality of the charging and discharging circuit and eliminating the risk of poor contact.

[0097] It should be noted that the drive mechanism is used to provide driving force for the movement of mechanisms such as the pallet positioning assembly 700. For example, the drive mechanism can be composed of a motor or cylinder and a transmission rod system.

[0098] refer to Figure 9 and Figure 10 As shown, in some embodiments, the second floating mechanism 530 includes a second linear guide rail 531 and a second floating spring 532; the second linear guide rail 531 is arranged along a first direction X, and a plurality of second positioning blocks 520 are slidably connected to the second linear guide rail 531; a plurality of second floating springs 532 are provided, and each second floating spring 532 is connected between two adjacent second positioning blocks 520 so that the second positioning blocks 520 float during the engagement of the corresponding layer plate 200.

[0099] The second linear guide rail 531 is arranged along the first direction X, providing a precise sliding path and guiding constraint for all second positioning blocks 52. It ensures that all second positioning blocks 520 and their connected first probe units 510 can only move linearly along the first direction X; each second positioning block 520 is independently slidably connected to the second linear guide rail 531, meaning that the movement of each second positioning block 520 in the first direction X is relatively independent; each second floating spring 532 is connected between two adjacent second positioning blocks 520 to form a series elastic floating unit. When not subjected to external force, the second floating spring 532 is normally in a natural state or a slightly pre-compressed state, maintaining the second positioning blocks 520 and their probes in a preset relative position. The restraint tray 10 is lifted along the Z-direction. The various shelves 200 inside it will be in different positions in the X-direction due to the varying thickness of the batteries they hold. At this time, each second positioning block 520 will engage with its corresponding shelf 200. Because the shelf 200 is in different positions in the first X-direction, each shelf 200 applies a force of different magnitude and direction to its corresponding second positioning block 520 through the engaging action. The force-bearing second positioning block 520 slides along the second linear guide 531 in the first X-direction, directly and synchronously driving its connected first probe unit 510 to move the same distance in the first X-direction. In this way, each first probe unit 510 can accurately track the actual position of the terminal post of the battery below it, ensuring that regardless of the actual thickness fluctuations of the batteries within the same restraint tray 10 or the floating position of each shelf 200, its corresponding first probe unit 510 can automatically track into place.

[0100] Furthermore, the first probe assembly 500 also includes a support member 540, which is connected to the fixed frame assembly 600; the second linear guide rail 531 is disposed on the support member 540; the second floating mechanism 530 also includes a second reset spring 533, which is connected along the first direction X between the plurality of second positioning blocks 520 and one end of the support member 540, and the second reset spring 533 is configured to drive the second positioning blocks 520 to reset when the second positioning blocks 520 are not engaged with the layer plate 200.

[0101] In this embodiment, the support member 540 is connected to the top of the fixed frame assembly 600 to provide stable support for the second floating mechanism 530. The second linear guide rail 531 is disposed at the bottom of the support member 540. The second return spring 533 of the second floating mechanism 530 is arranged along the first direction X and connected between the second positioning block 520 located at the far end of the second linear guide rail 531 and the support member 540. When the restraint tray 10 descends with its floating shelf 200 away or has not yet reached its position to engage with the second positioning block 520, i.e., in an unengaged state, the second return spring 533 is in a stretched or compressed state. At this time, the stored elastic potential energy will strongly pull the second positioning block 520 connected to it to move towards a preset "initial position" or "zero position". Since all the second positioning blocks 520 are connected by the second floating spring 532 and slidably connected to the second linear guide rail 531, pulling one end of the second positioning block 520 to move towards the zero position will, through the linkage of the second floating spring 532, pull all other second positioning blocks 520 to move synchronously together. Finally, all the second positioning blocks 520 and their connected first probe units 510 are pulled back to the preset original reference position. This ensures that before each new restraint tray 10 is loaded for charging and discharging operations, all the first probe units 510 start their floating stroke from the same known and precise initial position, which is conducive to adapting to high-frequency battery replacement.

[0102] refer to Figure 11 In some embodiments, the mechanical unit 20 further includes a second probe assembly 800 and a movable frame assembly 900; the second probe assembly 800 is disposed on the movable frame assembly 900; the tray positioning assembly 700 is arranged along the second direction Z between the movable frame assembly 900 and the first probe assembly 500; the movable frame assembly 900 is slidably connected to the fixed frame assembly 600 and connected to the drive mechanism; the drive mechanism can drive the movable frame assembly 900 to move so that the second probe assembly 800 can press against the other terminal of the battery.

[0103] It should be noted that in this embodiment, the first probe assembly 500 can be a positive electrode probe assembly, and the second probe assembly 800 can be a negative electrode probe assembly, so that one terminal of the battery can be a positive terminal and the other terminal of the battery can be a negative terminal. In addition, to ensure that both the upper and lower terminals of the battery can be pressed together, the restraint tray 10 can adopt an open design at both ends. For example, a pressing interface for exposing the other terminal of the battery can be designed on the support plate 430 below the restraint tray 10.

[0104] The structure of the second probe assembly 800 can be designed with reference to the first probe assembly 500, and will not be described in detail here. The second probe assembly 800 is connected to the movable frame assembly 900, which is slidably connected to the fixed frame assembly 600 and connected to the drive mechanism. The movable frame assembly 900 is located at the bottom of the tray positioning assembly 700. The drive mechanism can drive the movable frame assembly 900 to move so that the second probe assembly 800 can press against the other terminal of the battery. During the charge and discharge test: the drive mechanism drives the tray positioning assembly 700 to move the restraint tray 10 upward along the second direction Z. When the tray rises to a certain height, the second positioning block 520 fixed on the first probe assembly 500 above will engage with the corresponding shelf in the tray. 200, and under the action of the second floating mechanism 530, the position is adaptively adjusted, and the first probe unit 510 moves into place accordingly, pressing one terminal (such as the positive terminal) of all batteries. At this time, the drive mechanism drives the movable frame assembly 900 to move upward along the second direction Z with the second probe assembly 800. When the movable frame assembly 900 rises to a certain position, the second probe assembly 800 presses the other terminal (such as the negative terminal) of all batteries. At this time, the positive and negative terminals of each battery have been pressed by the probe, forming a complete electrical path, and charge and discharge tests can be performed. The upper and lower probe pressing method is conducive to meeting the charge and discharge test of dual-sided tab batteries.

[0105] In some embodiments, the mechanical unit 20 further includes a transmission assembly 1000, which may consist of two sets of rolling elements arranged at intervals along a third direction Y. Each rolling element is provided with a plurality of rollers arranged at intervals along a first direction X. The transmission assembly 1000 is disposed on the pallet positioning assembly 700, and the transmission assembly 1000 can transport the restraint pallet 10 located on the outside to the pallet positioning assembly 700.

[0106] refer to Figure 12As shown, in some embodiments, the fixed frame assembly 600 includes a first fixed frame 610, a second fixed frame 620, a plurality of guide posts 630, a plurality of first limiting rods 640, and a plurality of second limiting rods 650; the first fixed frame 610 and the second fixed frame 620 are arranged at intervals along a second direction Z, and the first probe assembly 500 and the driving mechanism are connected to the first fixed frame 610; the plurality of guide posts 630 are arranged at intervals between each other and arranged along the second direction Z between the first fixed frame 610 and the second fixed frame 620, and each guide post 630 is connected to the first fixed frame 610 and the second fixed frame 620 respectively; the tray positioning assembly 700 is arranged along the second direction Z between the first fixed frame 610 and the second fixed frame 620. Between the two fixed frames 620, a movable frame assembly 900 is arranged along the second direction Z between the tray positioning assembly 700 and the second fixed frame 620. The tray positioning assembly 700 and the movable frame assembly 900 are slidably connected to the guide post 630, respectively. A plurality of first limiting rods 640 are spaced apart from each other, and one end of each first limiting rod 640 is connected to the first fixed frame 610 along the second direction Z to limit the maximum displacement of the restraint tray 10 toward the first probe assembly 500. A plurality of second limiting rods 650 are spaced apart from each other, and one end of each second limiting rod 650 is connected to the second fixed frame 620 along the second direction Z to limit the maximum displacement of the second probe assembly 800 toward the restraint tray 10.

[0107] In this embodiment, the first fixed frame 610 is located at the top of the mechanical unit 20 and serves as the fixed platform for the first probe assembly 500 and the drive mechanism. The second fixed frame 620 is located at the bottom of the mechanical unit 20 and is arranged at intervals with the first fixed frame 610 along the second direction Z. Together, they constitute the upper and lower boundaries of the entire fixed frame assembly 600 and form the space of the core working area of ​​the battery charging and discharging device 1. Multiple guide posts 630, typically four in number, are located at the four corners of the fixed frame assembly 600 and are arranged at intervals. The two ends of each guide post 630 are rigidly connected to the first fixed frame 610 and the second fixed frame 620, respectively, providing a track for the tray positioning assembly 700 and the movable frame assembly 900 to move precisely in a straight line along the second direction Z. Multiple first limiting rods 640 are spaced apart from each other. One end of each first limiting rod 640 is connected to the first fixed frame 610 along the second direction Z. When the tray positioning assembly 700 moves upward with the restraint tray 10, the tray positioning assembly 700 will eventually touch the end of the downwardly extending first limiting rod 640, thereby preventing the restraint tray 10 from continuing to rise and preventing it from rising excessively and hitting the first probe assembly 500 fixed above, causing equipment damage. This ensures that the floating mechanism of the first probe assembly 500 operates within its safe stroke. Multiple second limiting rods 650 are spaced apart from each other. One end of each second limiting rod 650 is connected to the second fixed frame 620 along the second direction Z. When the movable frame assembly 900 moves upward with the second probe assembly 800, the movable frame assembly 900 will eventually contact the end of the upwardly extending second limiting rod 650, thereby preventing the movable frame assembly 900 from continuing to rise and preventing the second probe assembly 800 from rising excessively and damaging the terminal post at the bottom of the battery or the battery itself with excessive pressure.

[0108] In this embodiment of the application, a negative pressure docking component 1100 is also provided at one end of the first fixed frame 610. The negative pressure docking component 1100 is connected to the driving mechanism and can dock and communicate with the negative pressure connector 142A under the drive of the driving mechanism to connect to an external negative pressure device and provide negative pressure to the negative pressure cup 111 of the negative pressure component 100.

[0109] In another embodiment of this application, the battery is clamped on the tray frame 400 and pressurized by the tray frame 400 through the negative pressure workstation and restraint equipment, and combined with the negative pressure component 100 to form a restraint tray 10. The transmission component 1000 transports it from the outside to the tray positioning component 700. The drive mechanism (such as a cylinder) on the fixed frame component 600 drives the tray positioning component 700 to lift along the second direction Z. The first limit rod 640 triggers a hard limit, constraining the pressing stroke of the restraint tray 10, so that the restraint tray 10 reaches the preset position. The first probe component 500 presses against the positive terminal of the battery first. Then, the movable frame component 900 drives the second probe component 800 to move upward. The second limit rod 650 triggers a hard limit. At this time, the second probe component 800 presses against the negative terminal of the battery. Then, the negative pressure docking component 1100 is driven by the drive mechanism on the fixed frame component 600 to dock and connect with the negative pressure connector 142A on the negative pressure component 100 to realize battery charging and discharging or negative pressure process processing.

[0110] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A negative pressure assembly (100), characterized in that, It includes multiple negative pressure units (110), multiple first positioning blocks (120), and a first floating mechanism (130). The plurality of negative pressure units (110) are arranged at intervals along a first direction (X); Multiple first positioning blocks (120) are arranged at intervals along the first direction (X) and are placed at one end of multiple negative pressure units (110), and are all slidably connected to the first floating mechanism (130). The first positioning blocks (120) are used to engage with the corresponding shelf (200) in the restraint tray (10). Each of the first positioning blocks (120) is fixedly connected to a corresponding negative pressure unit (110). The first floating mechanism (130) is configured to enable the first positioning block (120) to float during the engagement of the corresponding layer plate (200), thereby driving the corresponding negative pressure unit (110) to move along the first direction (X), so that the corresponding negative pressure unit (110) can dock with the corresponding battery filling port.

2. The negative pressure assembly (100) of claim 1, wherein, The first floating mechanism (130) includes a first linear guide rail (131) and a first floating spring (132). The first linear guide (131) is arranged along the first direction (X), and a plurality of the first positioning blocks (120) are slidably connected to the linear guide (131); Multiple first floating springs (132) are provided, and each first floating spring (132) is connected between two adjacent first positioning blocks (120) so that the first positioning blocks (120) can float during the engagement of the corresponding layer plate (200).

3. The negative pressure component (100) according to claim 2, characterized in that, It also includes a support mechanism (140), which includes a support frame (141) and a mounting bracket (142). The support frame (141) is connected to the mounting bracket (142), and the two ends of the mounting bracket (142) are used to connect the restraint tray (10). The first linear guide rail (131) is mounted on the mounting bracket (142), and a plurality of the negative pressure units (110) are mounted inside the support frame (141); The first floating mechanism (130) further includes a first return spring (133), which is connected along a first direction (X) between a plurality of first positioning blocks (120) and one end of the mounting bracket (142). The first return spring (133) is configured to drive the first positioning block (120) to reset when the first positioning block (120) is not engaged with the shelf (200).

4. The negative pressure assembly (100) of claim 3, wherein, The negative pressure unit (110) includes a negative pressure cup (111) and a negative pressure nozzle (112). The negative pressure cup (111) is housed within the support frame (141); The negative pressure suction nozzle (112) is connected to the negative pressure cup (111) and is connected to the corresponding first positioning block (120).

5. The negative pressure assembly (100) according to any one of claims 1 to 4, characterized in that Each of the first positioning blocks (120) has a bayonet (121) at one end away from the negative pressure unit (110) that can engage with the corresponding layer plate (200). The projection of each of the bayonet slots (121) along the second direction (Z) is located between two adjacent negative pressure units (110).

6. A restraining tray (10) characterized by, It includes the negative pressure assembly (100) as described in any one of claims 1 to 5, and further includes a plurality of shelves (200), a restraint assembly (300) and a tray frame (400). Multiple shelves (200) are arranged at intervals along a first direction (X) and slidably connected within the tray frame (400), with the space between two adjacent shelves (200) used for clamping batteries; The restraint assembly (300) is at least partially disposed within the tray frame (400) and disposed at one end of the plurality of shelves (200) along a first direction (X). The restraint assembly (300) is movable toward the plurality of shelves (200) and abuts against one end of the plurality of shelves (200) along the first direction (X). The negative pressure assembly (100) is disposed on the tray frame (400) along the second direction (Z). A plurality of first positioning blocks (120) engage with the corresponding shelf (200) and can float as the corresponding shelf (200) moves, so that the corresponding negative pressure unit (110) can dock with the corresponding battery filling port.

7. The restraint tray (10) of claim 6, characterized in that, The shelf (200) includes a tray shelf (210) and a battery shelf (220). The pallet shelf (210) is provided with two guide portions (211) arranged at intervals along a third direction (Y), and the guide portions (211) are slidably connected to the pallet frame (400); The battery layer (220) is disposed between two guide portions (211) for applying pressure to the battery; One of the guide portions (211) can engage with the first positioning block (120).

8. The restraint tray (10) of claim 6, characterized in that, The restraint assembly (300) includes a restraint layer (310) and a locking screw (320). The restraint shelf (310) is slidably connected within the tray frame (400) and disposed at one end of the plurality of shelves (200) along the first direction (X); The locking screw (320) is connected to the restraint plate (310) at one end along the first direction (X), and the other end passes through the tray frame (400), and can rotate based on the tray frame (400) to apply pressure to the restraint plate (310).

9. The restraint tray (10) of claim 8, characterized in that, The pallet frame (400) includes a first end plate (410), a second end plate (420), a support plate (430), and a plurality of guide rods (440). The first end plate (410) and the second end plate (420) are arranged at intervals along the first direction (X) at both ends of the support plate (430) and are respectively connected to the support plate (430); Multiple guide rods (440) are arranged between the first end plate (410) and the second end plate (420) along a first direction (X) and are respectively connected to the first end plate (410) and the second end plate (420). The plurality of the layers (200) and the restraint layer (310) are slidably connected to the guide rod (440), and the end of the locking screw (320) away from the restraint layer (310) is connected to the second end plate (420).

10. A battery charging and discharging device (1), characterized in that, The device includes the restraint tray (10) as described in any one of claims 6 to 9, and also includes a mechanical unit (20), the mechanical unit (20) including a first probe assembly (500), a fixing frame assembly (600), a tray positioning assembly (700), and a drive mechanism; The pallet positioning component (700) is disposed within the fixed frame component (600) and is slidably connected to the fixed frame component (600) for supporting the restraint pallet (10). The drive mechanism is connected to the fixed frame assembly (600), connected to the pallet positioning assembly (700), and can drive the pallet positioning assembly (700) to move along the second direction (Z); The first probe assembly (500) is disposed on the fixed frame assembly (600) and includes a plurality of first probe units (510) arranged at intervals along a first direction (X), a plurality of second positioning blocks (520) and a second floating mechanism (530). Multiple second positioning blocks (520) are slidably connected to the second floating mechanism (530), and each first probe unit (510) is connected to a second positioning block (520). The second positioning block (520) is used to engage with the corresponding shelf (200) in the restraint tray (10). The second floating mechanism (530) is configured to enable the second positioning block (520) to float during the engagement of the corresponding layer plate (200), thereby driving the corresponding first probe unit (510) to move along the first direction (X), so that the corresponding first probe unit (510) can press the corresponding battery terminal.

11. The battery charging and discharging device (1) according to claim 10, characterized in that, The second floating mechanism (530) includes a second linear guide (531) and a second floating spring (532); The second linear guide (531) is arranged along the first direction (X), and a plurality of second positioning blocks (520) are slidably connected to the second linear guide (531); Multiple second floating springs (532) are provided, each second floating spring (532) is connected between two adjacent second positioning blocks (520) so that the second positioning blocks (520) can float during the engagement of the corresponding layer plate (200).

12. The battery charging and discharging device (1) according to claim 11, characterized in that, It also includes a support member (540) connected to the fixed frame assembly (600); The second linear guide (531) is disposed on the support member (540); The second floating mechanism (530) further includes a second return spring (533), which is connected along a first direction (X) between a plurality of second positioning blocks (520) and one end of the support member (540). The second return spring (533) is configured to drive the second positioning block (520) to reset when the second positioning block (520) is not engaged with the layer plate (200).

13. The battery charging and discharging device (1) according to any one of claims 10 to 12, characterized in that, The mechanical unit (20) also includes a second probe assembly (800) and a movable frame assembly (900). The second probe assembly (800) is disposed on the active frame assembly (900); The pallet positioning assembly (700) is arranged along the second direction (Z) between the movable frame assembly (900) and the first probe assembly (500); The movable frame assembly (900) is slidably connected to the fixed frame assembly (600) and connected to the drive mechanism; The drive mechanism can move the movable frame assembly (900) so that the second probe assembly (800) can press against the other terminal of the battery.

14. The battery charging and discharging device (1) according to any one of claims 10 to 12, characterized in that, The mechanical unit (20) further includes a transmission assembly (1000) disposed on the pallet positioning assembly (700) for transporting the externally restrained pallet (10) onto the pallet positioning assembly (700).

15. The battery charging and discharging device (1) according to claim 13, characterized in that, The fixed frame assembly (600) includes a first fixed frame (610), a second fixed frame (620), a plurality of guide posts (630), a plurality of first limiting rods (640), and a plurality of second limiting rods (650). The first fixed frame (610) and the second fixed frame (620) are arranged at intervals along the second direction (Z), and the first probe assembly (500) and the drive mechanism are connected to the first fixed frame (610). The multiple guide posts (630) are arranged at intervals between each other and along the second direction (Z) between the first fixed frame (610) and the second fixed frame (620), and each guide post (630) is connected to the first fixed frame (610) and the second fixed frame (620). The pallet positioning assembly (700) is arranged along the second direction (Z) between the first fixed frame (610) and the second fixed frame (620), and the movable frame assembly (900) is arranged along the second direction (Z) between the pallet positioning assembly (700) and the second fixed frame (620). The pallet positioning assembly (700) and the movable frame assembly (900) are slidably connected to the guide post (630). Multiple first limiting rods (640) are spaced apart from each other, and one end of each first limiting rod (640) is connected to the first fixed frame (610) along the second direction (Z) to limit the maximum displacement of the restraint tray (10) toward the first probe assembly (500); Multiple second limiting rods (650) are spaced apart from each other, and one end of each second limiting rod (650) is connected to the second fixed frame (620) along the second direction (Z) to limit the maximum displacement of the second probe assembly (800) toward the restraint tray (10).

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