Restraining tray

Abstract

The utility model relates to the technical field of battery trays, and discloses a restraining tray which comprises a machine frame. At least one restraining unit is arranged; battery cell placing spaces are formed between the restraining units and the rack and / or between the adjacent restraining units in the first direction; the restraining unit comprises a fixing plate and a pressing plate which are arranged at intervals in the first direction, and the pressing plate is arranged on at least one side of the fixing plate in the first direction; the restraining unit further comprises an adjusting piece, and the adjusting piece enables the pressing plate to move in the direction close to the fixing plate or away from the fixing plate. According to the restraining tray provided by the utility model, the movable restraining tray is arranged, so that a single tray can be adapted to the production and use of battery cells with different thicknesses, and the tray does not need to be replaced or remanufactured when the production requirements of the battery cells with different thicknesses are met, so that the production cost is greatly reduced; meanwhile, it is guaranteed that the restraining tray exerts an effective restraining effect on the large face of the battery cell, good contact between a battery cell pole piece and a diaphragm is guaranteed, and the production quality of the battery cell is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery tray technology, and specifically to a restraint tray. Background Technology

[0002] During the production of battery cells, restraint trays are often used to process dozens of cells in batches. The restraint trays stably fix the cells in place, ensuring the smooth insertion of the injection needle into the injection hole and the contact of the probe with the terminal.

[0003] In addition, the restraint tray is also responsible for applying appropriate pressure to the large surface of the cell so that the electrode and electrolyte can better contact during the formation process, promoting the uniform formation of the solid electrolyte interface film.

[0004] In related technologies, the restraint trays used in the production of battery cells have a fixed structure. On the one hand, the trays can only be used to produce battery cells of a single thickness. When faced with the production needs of battery cells of different thicknesses, the trays need to be replaced or remade, which increases production costs and time consumption. On the other hand, the fixed restraint trays are difficult to apply an effective restraint effect to the large surface of the battery cells, which affects the performance of the battery cells. Utility Model Content

[0005] In view of this, the present invention provides a restraint tray to solve the problem that the restraint tray has a fixed structure, can only be used for the production of battery cells with a single thickness, and is difficult to apply an effective restraint effect to the large surface of the battery cell.

[0006] This utility model provides a restraint tray, comprising: a frame; restraint units disposed on the frame, the restraint units having at least one; along a first direction, a cell placement space is formed between the restraint units and the frame and / or between adjacent restraint units; the restraint unit includes a fixing plate and a pressure plate spaced apart along the first direction, the fixing plate being connected to the frame, the pressure plate being disposed on at least one side of the fixing plate along the first direction, the pressure plate being movable relative to the fixing plate along the first direction; the restraint unit further includes an adjusting member, the adjusting member causing the pressure plate to move toward or away from the fixing plate.

[0007] Beneficial effects: By setting up a movable restraint tray, compared with the fixed restraint trays in related technologies, a single tray can be adapted to the production of various cell thicknesses, offering strong compatibility. When facing the production needs of cell thicknesses, there is no need to replace or remake the tray, greatly reducing production costs and time consumption. At the same time, it ensures that after the cell is placed, the restraint tray applies an effective restraint effect on the large surface of the cell, ensuring good contact between the cell electrode and the separator, and improving the cell production quality. In addition, when the cell is clamped and fixed, the force applied to the pressure plate by the adjusting component can be adjusted to adjust the clamping force of the pressure plate on the cell to adapt to cells with different pressure requirements, ensuring that the restraint tray applies an effective restraint effect on the large surface of the cell. The movable restraint tray is easy to operate, allowing workers to quickly adjust it, further improving production efficiency.

[0008] In one alternative embodiment, the adjusting member includes a first adjusting unit and a second adjusting unit, wherein the first adjusting unit moves the pressure plate toward the fixed plate, and the second adjusting unit moves the pressure plate away from the fixed plate.

[0009] Beneficial effects: Through the cooperation of the first adjustment unit and the second adjustment unit, the restraint tray can stably clamp and fix the battery cell. At the same time, under the drive of the first adjustment unit, the pressure plate can gradually increase the distance between adjacent restraint units, that is, the size of the battery cell placement space gradually increases in the first direction, thereby improving the adaptability of the restraint tray to battery cells of different thicknesses, so as to achieve the purpose of a single restraint tray to adapt to a variety of battery cells of different thicknesses. Furthermore, the clamping force of the pressure plate on the battery cell can be controlled by adjusting the output force of the second adjustment unit (in this embodiment, elastic elements with different elastic coefficients can be replaced), thereby adapting to the production needs of different battery cell materials.

[0010] In one optional embodiment, the first adjustment unit is an adsorption device, which is disposed on the fixed plate and can be adsorbedly engaged with the pressure plate; the second adjustment unit is an elastic element, which is detachably disposed between the fixed plate and the pressure plate, and the elastic extension and contraction direction of the elastic element is parallel to the first direction.

[0011] Beneficial effects: Through the cooperation of the adsorption device and the elastic element, the adsorption device can actively apply adsorption force to the pressure plate to adjust the position of the pressure plate. At the same time, during the adjustment process, the elastic element is compressed. Then, after the adsorption device is closed, the elastic element can rebound to push the pressure plate to adjust the position of the pressure plate. The adsorption device and the elastic element cooperate to form a combined structure, realizing the stable clamping and fixing of the battery cell by the restraint tray. At the same time, under the adsorption force of the adsorption device, the pressure plate can gradually increase the distance between adjacent restraint units, that is, the size of the battery cell placement space gradually increases in the first direction. This allows a single restraint tray to adapt to a variety of battery cells of different thicknesses. Furthermore, by replacing the elastic element with different elastic coefficients, the clamping force of the pressure plate on the battery cell can be controlled, thereby adapting to the production needs of different battery cell materials. This ensures that the restraint tray applies an effective restraining effect on the large surface of the battery cell, so that the electrode and the separator maintain good contact during the formation process, improving the performance of the battery cell.

[0012] In one optional embodiment, the restraint tray further includes a limiting rod extending along a first direction; wherein both ends of the limiting rod are connected to the frame, and the limiting rod passes through the fixing plate, and the position of the fixing plate on the limiting rod is adjustable; and / or; the limiting rod is provided with several segments along the first direction, and the limiting rod is provided between the frame and adjacent fixing plates and between adjacent fixing plates.

[0013] In one alternative embodiment, in the second direction, the edge plate of the fixing plate protrudes relative to the pressure plate, and the limiting rod is attached to the edge plate of the fixing plate.

[0014] In one optional embodiment, the restraint tray further includes a fixing member and fasteners. The fixing member extends along a first direction and has a plurality of fixing holes spaced apart along the first direction. A plurality of fasteners are provided, and the plurality of fasteners are correspondingly inserted through the plurality of fixing holes. Adjacent fasteners are respectively fastened to the frame and an adjacent fixing plate or to an adjacent fixing plate.

[0015] In one alternative embodiment, the pressure plate is connected to the second adjustment unit on a first surface along a first direction, and the second surface is spaced apart from and opposite to the adjacent restraint unit and / or the frame.

[0016] In one alternative embodiment, the side of the pressure plate facing away from the second adjustment unit is covered with a protective layer.

[0017] In one alternative embodiment, at least two of the restraint units are spaced apart in the second direction, and the fixing plates of two adjacent restraint units in the second direction are integrally formed.

[0018] In one optional embodiment, the frame includes a base frame, side plates, and crossbeams; the side plates are fixed to the base frame, and the side plates and adjacent restraint units form the cell placement space; the crossbeams are connected to the side plates and pass through the fixing plate.

[0019] In one alternative embodiment, the restraint tray further includes a support bar disposed on the base frame, the support bar extending along a first direction, and the end of the fixing plate engaging with the support bar for limiting position. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the restraint unit of this utility model;

[0022] Figure 2 This is a schematic diagram showing the fit between the restraint unit and the fixing plate of this utility model;

[0023] Figure 3 This is a schematic diagram of the restraint tray of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the restraint tray of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Frame; 11. Base frame; 12. Side panels; 13. Crossbeams;

[0028] 2. Restraint unit; 21. Pressure plate; 22. Fixing plate;

[0029] 3. Battery cells;

[0030] 4. Adjusting component; 41. First adjusting unit; 42. Second adjusting unit;

[0031] 5. Support strips;

[0032] 6. Protective layer;

[0033] 7. Fasteners; 71. Fasteners;

[0034] 8. Space for battery cell placement;

[0035] 9. Limit rod. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] The following is combined Figures 1 to 5 The following describes embodiments of the present invention.

[0041] According to an embodiment of the present invention, a restraint tray is provided, comprising: a frame 1; a restraint unit 2 disposed on the frame 1, wherein at least one restraint unit 2 is provided; a cell placement space 8 is formed between the restraint unit 2 and the frame 1 and / or between adjacent restraint units 2 along a first direction; the restraint unit 2 includes a fixing plate 22 and a pressure plate 21 spaced apart along the first direction, the fixing plate 22 is connected to the frame 1, and the pressure plate 21 is provided on at least one side of the fixing plate 22 along the first direction, the pressure plate 21 being movable relative to the fixing plate 22 along the first direction; the restraint unit 2 further includes an adjusting member 4, the adjusting member 4 causing the pressure plate 21 to move toward or away from the fixing plate 22.

[0042] It should be noted that the first direction is Figures 1 to 3 The direction indicated by the middle arrow. That is, the direction perpendicular to the surface of the fixing plate 22 and the pressure plate 21.

[0043] Specifically, the structure of the restraint tray can include the following three specific implementation methods:

[0044] In one embodiment, the restraint tray includes a frame 1 and a restraint unit 2 disposed adjacent to the frame 1, with the restraint unit 2 spaced apart from the frame 1, thereby forming a cell placement space 8 only between the frame 1 and the restraint unit 2.

[0045] In another embodiment, the restraint tray includes a plurality of restraint units 2, which are arranged sequentially and spaced apart to form a cell placement space 8 between adjacent restraint units 2. In this case, no cell placement space 8 is formed between the frame 1 and the restraint units 2.

[0046] In this embodiment, the restraint tray includes a frame 1 and a plurality of restraint units 2 arranged sequentially within the frame 1; wherein, a cell placement space 8 is formed between the frame 1 and the adjacent restraint units 2, and the plurality of restraint units 2 are arranged at intervals in sequence, thereby forming a cell placement space 8 between adjacent restraint units 2.

[0047] Specifically, before inserting the battery cell 3, the adjusting member 4 is used to move the pressure plate 21 towards the fixed plate 22, thereby increasing the distance between adjacent restraint units 2 (or between the frame and adjacent restraint units 2) and expanding the size of the battery cell placement space 8 in the first direction, thus accommodating batteries of various thicknesses. After inserting the battery cell 3, the adjusting member 4 is used to move the pressure plate 21 away from the fixed plate 22 until the adjacent restraint units 2 (or between adjacent restraint units 2 and the frame 1) clamp the battery cell, ensuring that the restraint tray applies an effective restraint effect to the large surface of the battery cell. When the battery cell is clamped and fixed, the force applied by the adjusting member 4 to the pressure plate 21 can be adjusted, thereby adjusting the clamping force of the pressure plate 21 on the battery cell to accommodate batteries with different pressure requirements, ensuring that the restraint tray applies an effective restraint effect to the large surface of the battery cell.

[0048] This embodiment provides a movable restraint tray. Compared to the fixed restraint trays in related technologies, a single tray can be adapted to the production of various battery cells of different thicknesses, offering strong compatibility. When facing the production needs of battery cells of different thicknesses, there is no need to replace or remake the tray, greatly reducing production costs and time consumption. At the same time, it ensures that after the battery cell is placed, the restraint tray applies an effective restraint effect on the large surface of the battery cell, ensuring good contact between the battery cell electrode and the separator, and improving the battery cell production quality. In addition, when the battery cell is clamped and fixed, the force applied by the adjusting component 4 to the pressure plate 21 can be adjusted to adjust the clamping force of the pressure plate 21 on the battery cell, so as to adapt to the battery cells with different pressure requirements and ensure that the restraint tray applies an effective restraint effect on the large surface of the battery cell. The movable restraint tray is easy to operate and allows workers to quickly adjust it, further improving production efficiency.

[0049] It is understood that the pressure plate 21 can be set on opposite sides of the fixed plate 22 along the first direction, or it can be set on one side of the fixed plate 22, as long as there is at least one pressure plate 21 between adjacent restraint units 2 (or between restraint unit 2 and frame 1).

[0050] Furthermore, when the battery cell needs to be removed, the adjusting member 4 moves the pressure plate 21 toward the fixed plate 22, so that the battery cell can be removed.

[0051] In one alternative implementation, such as Figure 1 As shown, the adjusting member 4 includes a first adjusting unit 41 and a second adjusting unit 42. The first adjusting unit 41 moves the pressure plate 21 toward the direction of the fixed plate 22, and the second adjusting unit 42 moves the pressure plate 21 away from the fixed plate 22.

[0052] Specifically, before inserting the battery cell, the first adjustment unit 41 drives the pressure plate 21 to move closer to the fixed plate 22, thereby widening the gap between the restraint units 2 (or the gap between the restraint unit 2 and the frame 1) to accommodate battery cells of various thicknesses. After inserting the battery cell, the first adjustment unit 41 is closed, stopping its driving action on the pressure plate 21. The second adjustment unit 42 drives the pressure plate 21 to move away from the fixed plate 22, gradually bringing adjacent restraint units 2 (or adjacent restraint units 2 and the frame 1) closer together, thus clamping the battery cell. When the battery cell is clamped and fixed, the force applied by the second adjustment unit 42 to the pressure plate 21 can be adjusted to adjust the clamping force of the pressure plate 21 on the battery cell to accommodate battery cells with different pressure requirements. This ensures that the restraint tray applies an effective restraint effect on the large surface of the battery cell, allowing the electrode and separator to maintain good contact during the formation process, thus improving the battery cell performance.

[0053] Furthermore, when the battery cell needs to be removed, the first adjustment unit 41 drives the pressure plate 21 to move toward the fixed plate 22, so that the battery cell can be removed.

[0054] In this embodiment, the first adjustment unit 41 and the second adjustment unit 42 cooperate to achieve stable clamping and fixing of the battery cell by the restraint tray. At the same time, the pressure plate 21 can gradually increase the distance between adjacent restraint units 2 under the drive of the first adjustment unit 41, that is, the size of the battery cell placement space gradually increases in the first direction, thereby improving the adaptability of the restraint tray to battery cells of different thicknesses, so as to achieve the purpose of a single restraint tray to adapt to a variety of battery cells of different thicknesses. Furthermore, the clamping force of the pressure plate 21 on the battery cell can be controlled by adjusting the output force of the second adjustment unit 42 (in this embodiment, elastic elements with different elastic coefficients can be replaced), thereby adapting to the production needs of different battery cell materials.

[0055] In one alternative implementation, such as Figure 1 As shown, the first adjustment unit 41 is an adsorption device, which is located on the fixed plate 22 and can be adsorbedly engaged with the pressure plate 21; the second adjustment unit 42 is an elastic element, which is detachably connected between the fixed plate 22 and the pressure plate 21, and the elastic extension and contraction direction of the elastic element is parallel to the first direction.

[0056] Specifically, before the battery cell is inserted, the adsorption device provides an attractive force, drawing the pressure plate 21 towards the fixed plate 22. The elastic element is gradually compressed, increasing the distance between adjacent restraint units 2 (or the distance between adjacent restraint units 2 and the frame 1). After the battery cell is inserted, the adsorption device is turned off, canceling its suction effect. The elastic element rebounds under the action of elastic force, causing the pressure plate 21 to gradually move away from the fixed plate 22 until the battery cell is clamped and fixed. Furthermore, by replacing the elastic element with one of different elastic coefficients, the elastic force applied by the elastic element to the pressure plate 21 can be adjusted, thereby adjusting the pressure of the pressure plate 21 on the battery cell to meet the clamping requirements of different battery cells.

[0057] Furthermore, when the battery cell needs to be removed, the adsorption device attracts the pressure plate 21 and moves it toward the fixed plate 22, so that the battery cell can be removed.

[0058] It is understandable that when the battery cell is clamped and fixed, if it is necessary to reduce the pressure of the pressure plate 21 on the battery cell, in addition to replacing the elastic element, the pressure of the pressure plate 21 on the battery cell can also be adjusted by using an adsorption device. Specifically, the adsorption device is turned on and it attracts the pressure plate 21 with a small adsorption force. This small adsorption force acts on the pressure plate 21, offsetting part of the pressure of the elastic element on the pressure plate 21, thereby reducing the pressure of the pressure plate 21 on the battery cell.

[0059] Specifically, if, under certain circumstances, when the battery cell is clamped and fixed, the pressure applied to the battery cell by the elastic element is A, but if the battery cell does not require such a large force, the adsorption device can be turned on without replacing the elastic element, and the adsorption device can attract the pressure plate 21 with a smaller adsorption force B to counteract the pressure value B of the elastic element acting on the battery cell. The pressure value of the pressure plate 21 acting on the battery cell becomes AB, thereby reducing the pressure on the battery cell.

[0060] Optionally, the adsorption device can be, but is not limited to, an electromagnet. The electromagnet is set at the fixed plate 22 and is positioned opposite to the pressure plate 21. When the electromagnet is energized, it generates magnetism to attract the pressure plate 21 to move. When the power is turned off, the attraction is canceled. The pressure plate 21 can be made of, but is not limited to, metal materials, so that the adsorption device and the pressure plate 21 can be adsorbed together. The elastic element can be, but is not limited to, a spring. Both sides of the spring are detachably connected to the fixed plate 22 and the pressure plate 21, respectively.

[0061] Optionally, the pressure applied to the battery cell by the pressure plate 21 is P, and the range of P can be, but is not limited to, 0.1MPa≤P≤1MPa, so that the pressure on the battery cell is within a reasonable range, avoiding excessive pressure on the battery cell, which would cause the battery cell to be over-compressed and easily lead to problems such as electrode wrinkling and diaphragm damage, affecting the performance of the battery cell; on the other hand, it avoids that the pressure on the battery cell is too low, which would cause the electrode and diaphragm inside the battery cell to not be in close contact, affecting the performance of the battery cell.

[0062] Specifically, the pressure P can be any value among 0.1MPa, 0.15MPa, 0.2MPa, 0.3MPa, 0.6MPa, 0.98MPa, 1MPa, etc., or a value between any two values.

[0063] Optionally, the restraint tray can be adapted to a cell thickness of D, where D can be, but is not limited to, 25mm≤D≤100mm. Preferably, D is in the range of 30mm≤D≤80mm. The restraint tray is highly adaptable and can be adapted to a variety of cell thicknesses.

[0064] Specifically, the cell thickness D can be any value among 25mm, 25.2mm, 30mm, 50mm, 80mm, 90mm, 90.8mm, 100mm, etc., or a value between any two values.

[0065] In this embodiment, through the cooperation of the adsorption device and the elastic element, the adsorption device can actively apply adsorption force to the pressure plate 21 to adjust the position of the pressure plate 21. At the same time, during the adjustment process, the elastic element is compressed. Then, after the adsorption device is closed, the elastic element can rebound to push the pressure plate 21 to move and adjust the position of the pressure plate 21. The adsorption device and the elastic element cooperate to form a combined structure, realizing the stable clamping and fixing of the battery cell by the restraint tray. At the same time, under the action of the adsorption force of the adsorption device, the pressure plate 21 can gradually increase the distance between adjacent restraint units 2, that is, the size of the battery cell placement space gradually increases in the first direction. This achieves the purpose of a single restraint tray to adapt to a variety of battery cells of different thicknesses. Furthermore, by replacing the elastic element with different elastic coefficients, the clamping force of the pressure plate 21 on the battery cell can be controlled, thereby adapting to the production needs of different battery cell materials. This ensures that the restraint tray applies an effective restraining effect on the large surface of the battery cell, so that the electrode and the separator maintain good contact during the formation process, improving the battery cell performance.

[0066] In some embodiments, such as Figure 3 As shown, the restraint tray also includes a limiting rod 9, which extends along a first direction.

[0067] In one embodiment, such as Figure 3 As shown, both ends of the limiting rod 9 are connected to the frame 1, and the limiting rod 9 passes through the fixing plate 22. The position of the fixing plate 22 on the limiting rod 9 is adjustable.

[0068] Specifically, the fixing plate 22 has a free state and a limited fixed state. In the free state, the fixing plate 22 can slide along the limiting rod 9 to adjust the position of the fixing plate 22 to adapt to different production needs. After adjustment, the position of the fixing plate 22 is fixed by means of the fixing structure to prevent the fixing plate 22 from moving during the cell production process. The fixing plate 22 is in the limited fixed state.

[0069] Furthermore, the fixing structure can be, but is not limited to, a limiting ring. The limiting ring is fixedly sleeved on the outer periphery of the limiting rod, and at least two limiting rings are arranged on opposite sides of the fixing plate 22 along the first direction and abut against the plate surface of the fixing plate 22 to fix the position of the fixing plate 22 and prevent the fixing plate 22 from moving in the first direction.

[0070] In another embodiment, the limiting rod 9 is provided with several segments along the first direction, and the limiting rod 9 is provided between the frame 1 and the adjacent fixed plate 22 and between the adjacent fixed plates 22.

[0071] Specifically, compared to the limiting rod 9 in the previous embodiment, the limiting rod 9 in this embodiment is configured as several segments. One segment of the limiting rod 9 is detachably connected to the adjacent fixing plate 22 at both ends along the first direction, and the other segment of the limiting rod 9 is detachably connected to the adjacent fixing plate 22 and the side plate 12 at both ends. The several segments of the limiting rod 9 are arranged sequentially along the first direction to play the role of upper limit fixation in the first direction, so that the fixing plate 22 is limited and fixed. When adjusting the position of the fixing plate 22, the limiting rod 9 is removed so that the fixing plate 22 can be moved to adjust the position of the fixing plate 22. After the adjustment is completed, according to the distance between the adjacent fixing plates 22 or the distance between the adjacent fixing plates 22 and the side plate 12, the limiting rod 9 of the same length and spacing is installed between them, so that the fixing plate 22 is re-limited and fixed.

[0072] In some embodiments, such as Figure 3 As shown, the restraint tray also includes a fixing member 7 and fasteners 71. The fixing member 7 extends along the first direction and has a plurality of fixing holes spaced apart along the first direction. A plurality of fasteners 71 are provided, and the plurality of fasteners 71 are respectively inserted through the plurality of fixing holes. Adjacent fasteners 71 are respectively fastened to the frame 1 and the adjacent fixing plate 22 or to the adjacent fixing plate 22.

[0073] Specifically, the fastener 7 cooperates with the fastener 71 to form a fixing structure for the fixing plate 22 in the limited and fixed state. Specifically, the fastener 7 is a strip plate, fixedly connected to the fixing plate 22 and the frame 1 (specifically, the side plate 12) on one side along the second direction. The fastener 7 is provided with several segments along the first direction, or it can be a single segment. The fastener 7 is provided with several fixing holes spaced apart along the first direction. The fastener 71 cooperates with the fixing holes, and adjacent fasteners 71 are respectively fixed to the frame 1 and the adjacent fixing plate 22, or to the adjacent fixing plate, so that the fastener 7 is fixed to the frame 1 and the adjacent fixing plate 22, and to the adjacent fixing plate, thereby limiting and fixing the fixing plate 22, and fixing the position of the fixing plate 22 in the first direction. When it is necessary to adjust the position of the fixing plate 22, the fastener 71 and the fastener 7 can be removed. The fastener 71 can be, but is not limited to, screws.

[0074] In some embodiments, such as Figure 2 As shown, along the second direction, the edge of the fixing plate 22 extends out of the edge of the pressure plate 21, and the limiting rod 9 is correspondingly set with the part of the fixing plate 22 that extends out of the pressure plate 21.

[0075] Specifically, in the second direction, the edge plate of the fixing plate 22 protrudes relative to the pressure plate 21. The protruding part provides a basic mounting position for the limiting rod 9, and at the same time can prevent the limiting rod 9 from interfering with the position of the pressure plate 21, ensuring that the limiting rod 9 and the pressure plate 21 maintain an appropriate distance, avoiding friction or collision during movement, and improving the stability of the overall structure.

[0076] In some embodiments, such as Figure 3 As shown, the pressure plate 21 is connected to the second adjustment unit 42 on its first surface along the first direction, and its second surface is spaced apart from and opposite to the adjacent restraint unit 2 and / or frame 1.

[0077] Specifically, two pressure plates 21 are respectively located on opposite sides of the fixed plate 22 along the first direction, and the first side of the pressure plate 21 along the first direction is connected to the elastic element, and the second side is spaced apart from and opposite to the adjacent restraint unit 2 or the side plate 12 of the frame 1, so as to place the battery cell at the spaced position and ensure that it remains stable during the production process.

[0078] In some embodiments, such as Figure 2 As shown, the pressure plate 21 is covered with a protective layer 6 on at least one side facing away from the fixing plate 22.

[0079] Specifically, the protective layer 6 can be, but is not limited to, Teflon tape. Teflon tape is a high-temperature resistant tape made by coating glass fiber with Teflon emulsion, drying it to form Teflon glass fiber cloth, and then coating it again with silicone adhesive. The Teflon tape covers the contact surface between the pressure plate 21 and the battery cell, reducing friction, isolating the pressure plate 21 from the battery cell, improving battery cell stability, and extending service life. The thickness and width of the protective layer 6 can be determined according to the dimensions of the battery cell and the pressure plate 21.

[0080] In some embodiments, such as Figure 3 As shown, in the second direction, at least two restraint units 2 are arranged side by side, and the fixing plates 22 of two adjacent restraint units 2 in the second direction are integrally arranged.

[0081] Specifically, in the first direction, multiple restraint units 2 are arranged sequentially at intervals to form a row of clamping groups; in the second direction, at least two restraint units 2 are arranged side by side to set two rows of clamping groups at the restraint tray. The two rows of clamping groups are arranged side by side along the second direction to increase the number of battery cells that the restraint tray can clamp and improve production efficiency.

[0082] In some embodiments, such as Figure 3As shown, the frame 1 includes a base frame 11, a side plate 12 and a crossbeam 13; the side plate 12 is fixed to the base frame 11, and a cell placement space 8 is formed between the side plate 12 and the adjacent restraint unit 2; the crossbeam 13 is connected to the side plate 12 and is disposed through the fixing plate 22.

[0083] Specifically, the structure of the frame 1 includes, but is not limited to, the base frame 11, the side plate 12 and the crossbeam 13. The base frame 11 provides stable support, the side plate 12 cooperates with the adjacent restraint unit 2 to form the cell placement space 8, and the crossbeam 13 passes through the fixing plate 22, which supports the fixing plate 22 and enhances the stability of the overall structure.

[0084] In some embodiments, such as Figure 4 As shown, the restraint tray also includes a support bar 5, which is disposed on the base frame 11. The support bar 5 extends along a first direction, and the fixing plate 22 abuts against the support bar 5 at one end along a second direction.

[0085] Specifically, the cross-sectional shape of the support bar 5 is L-shaped, and the L-shaped notch matches the right-angle end of the fixing plate 22 to lock and limit the movement. The two support bars 5 are respectively located on opposite sides of the base plate along the second direction, and are respectively locked with opposite sides of the fixing plate 22 along the second direction to restrict the movement of the fixing plate 22 in the second direction.

[0086] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A restraint tray, characterized in that, include: Rack (1); A restraint unit (2) is provided on the frame (1), and the restraint unit (2) is provided at least one; along the first direction, a cell placement space (8) is formed between the restraint unit (2) and the frame (1) and / or between adjacent restraint units (2); The restraint unit (2) includes a fixing plate (22) and a pressure plate (21) spaced apart along a first direction. The fixing plate (22) is connected to the frame (1). The pressure plate (21) is provided on at least one side of the fixing plate (22) along the first direction. The pressure plate (21) is movable along the first direction. The restraint unit (2) further includes an adjustment member (4) adapted to move the pressure plate (21) closer to or further away from the fixed plate (22).

2. The restraint tray according to claim 1, characterized in that, The adjusting member (4) includes a first adjusting unit (41) and a second adjusting unit (42). The first adjusting unit (41) is adapted to bring the pressure plate (21) closer to the fixed plate (22), and the second adjusting unit (42) is adapted to move the pressure plate (21) away from the fixed plate (22).

3. The restraint tray according to claim 2, characterized in that, The first adjustment unit (41) is an adsorption device, which is disposed on the fixed plate (22) and can be adsorbedly engaged with the pressure plate (21); and / or, The second adjustment unit (42) is an elastic element, which is connected between the fixed plate (22) and the pressure plate (21).

4. The restraint tray according to any one of claims 1 to 3, characterized in that, The restraint tray also includes a limiting rod (9) that extends along a first direction; Wherein, both ends of the limiting rod (9) are connected to the frame (1), and the limiting rod (9) passes through the fixing plate (22), and the position of the fixing plate (22) on the limiting rod (9) is adjustable; and / or; the limiting rod (9) is provided with several segments along the first direction, and the limiting rod (9) is provided between the frame (1) and the adjacent fixing plate (22) and between the adjacent fixing plates (22).

5. The restraint tray according to claim 4, characterized in that, The restraint tray also includes a fixing member (7) and fasteners (71). The fixing member (7) extends along a first direction and has a plurality of fixing holes spaced apart along the first direction. A plurality of fasteners (71) are provided, and the plurality of fasteners (71) are respectively inserted through the plurality of fixing holes. Adjacent fasteners (71) are respectively fastened to the frame (1) and the adjacent fixing plate (22) or to the adjacent fixing plate (22).

6. The restraint tray according to claim 4, characterized in that, Along the second direction, the edge of the fixing plate (22) extends out of the edge of the pressure plate (21), and the limiting rod (9) is correspondingly arranged with the part of the fixing plate (22) that extends out of the pressure plate (21).

7. The restraint tray according to claim 5, characterized in that, The pressure plate (21) is covered with a protective layer (6) at least on the side facing away from the fixing plate (22).

8. The restraint tray according to claim 6, characterized in that, In the second direction, at least two of the restraint units (2) are arranged side by side, and the fixing plates (22) of two adjacent restraint units (2) in the second direction are integrally arranged.

9. The restraint tray according to claim 8, characterized in that, The frame (1) includes a base frame (11), side plates (12) and crossbeams (13); The side plate (12) is fixed to the base frame (11), and the side plate (12) and the adjacent restraint unit (2) form the cell placement space (8); The crossbeam (13) is connected to the side plate (12) and is disposed through the fixing plate (22).

10. The restraint tray according to claim 9, characterized in that, The restraint tray also includes a support bar (5), which is disposed on the base frame (11). The support bar (5) extends along a first direction, and one end of the fixing plate (22) along a second direction abuts against the support bar (5).

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