Restraining device and battery production equipment

Abstract

The utility model discloses a restraining device and battery production equipment. The restraining device comprises a bearing frame and at least two clamping pieces, the at least two clamping pieces are arranged on the bearing frame and are sequentially arranged side by side in the first direction. A heat exchange space is formed in the clamping piece, and the clamping piece is further provided with an airflow passing opening communicating with the heat exchange space and the outside. According to the technical scheme, the heat exchange efficiency of the clamping piece can be improved, so that the heating efficiency of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a restraint device and battery production equipment. Background Art

[0002] In some battery production processes, such as the formation process or the aging process, the battery needs to be clamped, pressurized and heated. For this reason, the relevant technology uses a restraint device to restrain the battery, and then sends the restraint device to the factory or heating furnace for hot air heating. At this time, since the clamping plates and batteries in the restraint device are alternately stacked and distributed, the contact area between the clamping plates and the hot air is limited, resulting in slow heat transfer of the clamping plates and affecting the heating efficiency of the battery. Utility Model Content

[0003] The main purpose of the present application is to provide a restraint device, which aims to accelerate the heat exchange efficiency of the clamping member to improve the heating efficiency of the battery.

[0004] To achieve the above purpose, the restraint device proposed in this application includes:

[0005] a carrier frame; and

[0006] At least two clamping members, both of which are arranged on the carrier and arranged side by side in sequence along a first direction;

[0007] A heat exchange space is arranged inside the clamping piece, and an air flow port communicating the heat exchange space with the outside is also arranged in the clamping piece.

[0008] The restraint device in the technical solution of the present application is provided with a heat exchange space in the clamp, and further provided with an airflow port connecting the heat exchange space and the outside, so that when the restraint device loaded with a battery is placed in an environment with hot air, the hot air can enter the heat exchange space of the clamp through the airflow port. In this way, both the inside and the outside of the clamp can be in contact with the air, increasing the contact area between the clamp and the hot air, thereby accelerating the heat exchange efficiency between the clamp and the hot air, achieving rapid heating of the clamp and improving the heating efficiency of the battery.

[0009] In some embodiments, the clamping member includes a plate body and fins. The plate body is provided with a heat exchange space and an air flow opening, and the fins are provided in the heat exchange space. Thus, the contact area with the hot air can be further increased through the fins.

[0010] In some embodiments, the heat exchange space is a cavity structure, and the heat exchange space includes two first cavity walls that are relatively spaced in the first direction, and at least one of the two first cavity walls is provided with a fin. Therefore, by setting the heat exchange space as a cavity structure, the heat exchange space can have a larger volume, which makes it convenient to set the fin in the heat exchange space. In the clamping member, a fin is set on the first cavity wall corresponding to the battery clamping member, so that after the fin exchanges heat with the hot air, the heat can be transferred to the first cavity wall in a timely and sufficient manner, thereby facilitating the first cavity wall to quickly heat up the corresponding battery.

[0011] In some embodiments, at least one first cavity wall is provided with a plurality of fins, and on the same first cavity wall, at least some of the fins are arranged side by side and spaced to form a fin group, thereby making the fin distribution more regular, so as to maximize the number of fins within the limited heat exchange space.

[0012] In some embodiments, at least one first cavity wall is provided with at least two fin groups, and the at least two fin groups are arranged side by side and spaced apart. Thus, the number of fins can be increased, and the space between the fin groups can allow the hot air flow to pass through, thereby increasing the contact area with the hot air and improving the fluidity of the hot air flow.

[0013] In some embodiments, fins are provided on both first cavity walls, and the fins on the two first cavity walls correspond to each other and are arranged at intervals. Thus, the heating efficiency and uniformity of heating each battery installed on the restraint device can be improved, and at the same time, the structure of the clamping piece can be made more regular, which is conducive to improving the convenience of processing and manufacturing the clamping piece.

[0014] In some embodiments, the heat exchange space includes two second cavity walls spaced relatively in the second direction, the second direction intersects the first direction; the two second cavity walls and the two first cavity walls are enclosed to form a heat exchange space, and in a third direction intersecting the first direction and the second direction, the two second cavity walls and the two first cavity walls are also enclosed to form two opposite air flow openings. Thus, the batteries located on both sides of the first direction of the clamping member will not cover the air flow opening, so that the clamping member can clamp the battery and supply hot air through different sides, so as to take into account both the clamping effect and the air flow effect on the battery.

[0015] In some embodiments, the plane where the fins are located intersects in a third direction; and / or, the support frame includes a base and a frame, the frame has two ends with an opening, one of which is connected to the base, and the other of which is enclosed to form a mounting port, and the base and the mounting port are arranged in the third direction; the base is provided with a connecting port, and at least part of the connecting port is correspondingly connected to the airflow port provided in the clamp near the base. As a result, when the hot air enters the heat exchange space, the fins can block part of the hot air, prolong the contact time between the hot air and the fins, and further help to improve the heat exchange effect between the clamp and the hot air. The support frame is configured to include a base and a frame, so that the base can support the product, thereby improving the stability of the product installed on the restraint device.

[0016] In some embodiments, the clamping member further includes a reinforcing plate, which is disposed in the heat exchange space; the reinforcing plate connects the two first cavity walls and is disposed relatively spaced apart from the second cavity wall. Thus, the processing strength of the clamping member can be enhanced so that the battery can be clamped and pressurized stably in the subsequent process.

[0017] In some embodiments, the number of reinforcing plates is at least two, and at least two reinforcing plates are arranged side by side and spaced apart along the second direction, and the heat exchange space is divided into a plurality of subspaces, and each subspace is provided with fins. Thus, it can be achieved that at least two locations in the second direction can strengthen the structural strength of the clamping member, thereby improving the strengthening effect on the clamping member. Furthermore, if fins are provided in each subspace, heat exchange with hot air can be achieved in each subspace.

[0018] In some embodiments, the clamp is an integrated structure; and / or the material of the clamp is aluminum. Thus, the clamp is set as an integrated structure, so that the clamp can be manufactured by one-piece molding, omitting the assembly process and thus improving the production efficiency of the clamp. At the same time, it is also beneficial to further improve the structural strength of the clamp. Setting the material of the clamp to aluminum can better balance the thermal conductivity and strength of the clamp.

[0019] In some embodiments, the clamping member includes two abutment surfaces facing each other in the first direction, and the restraining device also includes a contoured boss, which is arranged on the abutment surface. Thus, the contoured boss can be used to perform targeted abutment and clamping on the area where the electrode assembly in the battery is located, thereby facilitating improving the clamping and pressurizing effect on the battery.

[0020] In some embodiments, the restraint device further includes a thermally conductive flexible pad, which is disposed on the contoured boss and covers the surface of the contoured boss except the corresponding abutment surface. Thus, the thermally conductive flexible pad can play a buffering role and reduce the possibility of pressure loss on the battery surface. At the same time, the thermal conductivity of the thermally conductive flexible pad can better transfer the heat on the contoured boss to the battery.

[0021] In some embodiments, the thermally conductive flexible pad is bonded to the contoured boss; and / or, the thermally conductive flexible pad is made of thermally conductive silicone. As a result, the connection structure between the two can be hidden, and the buffering effect of the thermally conductive flexible pad will not be affected. At the same time, the contact area between the thermally conductive flexible pad and the contoured boss can be increased, which is beneficial to improve the stability of the installation of the thermally conductive flexible pad. Setting the material of the thermally conductive flexible pad to thermally conductive silicone can better balance the thermal conductivity and flexibility of the thermally conductive flexible pad, while reducing the cost of using the thermally conductive flexible pad.

[0022] In some embodiments, the profiling boss is detachably arranged on the abutting surface, so that the profiling boss can be replaced according to the size of the battery.

[0023] In some embodiments, one of the profiling boss and the abutting surface is provided with a buckle, and the other is provided with a buckle hole, and the buckle is engaged with the buckle hole. Thus, the connection structure of the profiling boss can be made simpler, which is conducive to improving the convenience of disassembling and assembling the profiling boss.

[0024] In some embodiments, the profiling boss is chamfered except for the corners abutting against the abutting surface; and / or the profiling boss is made of aluminum. Thus, chamfering the corner of the profiling boss close to the battery can reduce the possibility of pressure damage to the battery. Setting the material of the profiling boss to aluminum can better balance the thermal conductivity and strength of the profiling boss.

[0025] The present application also proposes a battery production device, comprising the above-mentioned restraint device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of an embodiment of the restraint device of the present application;

[0028] Figure 2 for Figure 1 A schematic cross-sectional view of a middle restraint device;

[0029] Figure 3 for Figure 2 A schematic diagram of a partial structure of the middle restraint device;

[0030] Figure 4 for Figure 1A schematic cross-sectional view of a clamping plate of a middle restraint device;

[0031] Figure 5 for Figure 3 Schematic diagram of the connection between the contoured boss and the clamping plate of the middle restraint device.

[0032] Description of Figure Numbers:

[0033] 100, restraint device; 10, carrier frame; 11, bottom support; 13, frame; 130, installation port; 131, connecting port; 133, slide rod; 20, clamping member; 21, clamping member body; 211, heat exchange space; 2111, subspace; 213, air flow port; 215, first cavity wall; 2151, abutment surface; 2153, buckle hole; 217, second cavity wall; 219, slide hole; 23, fin; 231, fin group; 25, reinforcement plate; 30, contoured boss; 31, buckle; 40, thermally conductive flexible pad; 50, driving mechanism; 51, driving screw; 53, force plate; 200, battery.

[0034] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] In the battery production process, after the injection process is completed, the battery needs to be loaded into a restraint device for transportation and subsequent infiltration, formation, aging, self-discharge testing, capacity separation and other processes. In some processes, the battery needs to be heated to accelerate the electrochemical reaction, and the battery needs to be clamped and pressurized to optimize the battery quality and improve performance. For example: in the formation process, a large amount of gas will be produced during the first charge and activation of the battery cell to produce a solid electrolyte interface film, and pressurizing the battery can promote gas discharge.

[0040] Therefore, in the related art, a restraint device is often used to restrain the battery, and then the restraint device is sent to a factory or a heating furnace to pass hot air for heating. At this time, since the clamping plates and batteries in the restraining device are alternately stacked and distributed, the contact area between the clamping plates and the hot air is limited, resulting in slow heat transfer of the clamping plates and affecting the heating efficiency of the battery.

[0041] Therefore, based on the above considerations, in order to solve the technical problem of slow heat transfer of the restraint device in the related art, the present application proposes a new type of restraint device. The restraint device innovatively provides a heat exchange space in the clamping plate, and is provided with an air flow port connecting the heat exchange space and the outside world, so that the hot air from the outside world can enter the heat exchange space in the clamping plate through the air flow port for heat exchange, thereby increasing the contact area between the clamping plate and the hot air, accelerating the heat exchange efficiency of the clamping plate and improving the heating efficiency of the battery.

[0042] In addition, it should be noted that the restraint device proposed in the present application can be used in the battery formation process introduced above. Of course, it can also be used in the battery aging process, or in application scenarios where other products need to be clamped and heated.

[0043] Next, the structure of the restraint device proposed in this application is explained with an embodiment:

[0044] Please refer to Figures 1 to 4 In one embodiment of the present application, the restraint device 100 proposed in the present application includes a carrier frame 10 and at least two clamping members 20; at least two clamping members 20 are arranged on the carrier frame 10 and are arranged side by side in sequence along the first direction; a heat exchange space 211 is provided in the clamping member 20, and the clamping member 20 is also provided with an air flow outlet 213 connecting the heat exchange space 211 and the outside.

[0045] The carrier 10 can be used to install the clamp 20 and support the battery 200 that needs to be between the clamps 20. Among them, the carrier 10 can be a structural form including a base 11 and a frame 13 as described below. Of course, the carrier 10 can include only a carrier plate, and the present application does not limit the structural type of the carrier 10. In addition, the carrier 10 can be a rectangular parallelepiped extending along the first direction, and of course it can also be a cube or other shapes, and the present application does not limit the shape of the carrier 10. Among them, the first direction can be a horizontal direction, and of course it can also be an inclined direction or other directions, and the present application does not limit the specific direction type of the first direction. In addition, the material of the carrier 10 can be metal, such as iron or steel. Of course, the material of the carrier 10 can also be plastic, and the present application does not limit the material of the carrier 10.

[0046] The clamp 20 can be used to clamp the battery 200 to restrain the product and reduce the expansion of the product during the processing process. Among them, the clamp 20 can be a plate structure, of course, it can also be a block structure, etc., and the present application does not limit the structural type of the clamp 20. In addition, the clamp 20 can be a rectangular parallelepiped, of course, it can also be a cube, so as to fit against the battery 200. Of course, the clamp 20 can also be a circular shape or other shapes, etc., and the present application does not limit the shape of the clamp 20. In addition, the heat exchange space 211 and the air flow port 213 provided on the clamp 20 can be used to allow hot air from the outside to enter the heat exchange space 211 through the air flow port 213. The inner side of the clamp 20 can also be in contact with the hot air for heat exchange. Among them, the heat exchange space 211 can be a cavity structure as described below. Of course, the heat exchange space 211 can also be a channel structure. At this time, the heat exchange space 211 may be provided with only one, and may be arranged in a circuitous manner in the clamp 20. Of course, the heat exchange space 211 may also be provided with at least two, and may be arranged side by side in the clamp 20. Therefore, the present application does not limit the structural form of the heat exchange space 211. The number of airflow openings 213 may be one, or at least two, as long as the heat exchange space 211 and the outside world can be connected. The shape of the airflow opening 213 may be circular, rectangular or square, etc., and the present application does not limit the shape of the airflow opening 213. The setting position of the airflow opening 213 may be set on the surface of the clamp 20 that does not correspond to the battery 200, or may be set on the surface of the clamp 20 that corresponds to the battery 200, and the present application does not limit the setting position of the airflow opening 213. In addition, the number of the clamps 20 may be two, or three or more, and the present application does not limit the number of the clamps 20. In addition, the battery 200 may be completely clamped between the two clamps 20. Of course, the clamping member 20 at the end in the first direction can also cooperate with the carrier 10 or other plates to clamp the battery 200. In addition, the clamping member 20 can be slidably mounted on the carrier 10 along the first direction, and the restraint device 100 can also include a driving mechanism 50, which can be connected to the clamping member 20 at the end to drive at least two clamps to approach and clamp and pressurize the battery 200. The driving mechanism 50 can include a driving screw 51 and a force plate 53, and the driving screw 51 can be extended along the first direction and threaded through the carrier 10. The force plate 53 is connected to one end of the driving screw 51 and can be driven by the rotating driving screw 51 to slide along the first direction. The force plate 53 and the clamping member 20 at the end are arranged relative to each other, and the force plate 53 is configured to abut and drive the clamping member 20 at the end. At this time, since the driving screw 51 is threadedly connected to the carrier 10, it can move closer to the clamping member 20 and away from the clamping member 20 along the first direction during the rotation process.The driving screw 51 can be manually driven to rotate by an operator. Of course, the driving mechanism 50 can also further include a driving motor to automatically drive the driving screw 51 to rotate through the driving motor. The force plate 53 can be used to rotate with the driving screw 51 in the circumferential direction of the driving screw 51, and is limited in the axial direction of the driving screw 51, so that the driving screw 51 can push or pull the force plate 53 when rotating. At the same time, the force plate 53 can also be used to abut and drive the clamping member 20 at the far left or far right. The driving screw 51 can be mounted on the force plate 53 through a bearing. Of course, one end of the driving screw 51 may not be provided with a threaded end, and the end is inserted into the rotating hole on the force plate 53. In this way, the driving mechanism 50 is configured to include a driving screw 51 and a force plate 53, so that the driving screw 51 can stably and accurately drive the force plate 53 to slide, and then stably drive the clamp 20 to the required position, so that the subsequent clamp 20 can accurately and stably clamp the battery 200. Moreover, after being driven into place, the driving screw 51 can also be self-locking, and there is no need to configure an additional structure for locking the force plate 53. The force plate 53 can increase the contact area with the clamp 20 at the end to improve the stability of the drive of the clamp 20 and avoid the possibility of damage to the clamp 20 due to excessive local stress. In addition, the driving mechanism 50 can be provided with one, and is located on the left or right side of at least two clamps 20. Of course, the driving mechanism 50 can be provided with two, and is located on the left and right sides of at least two clamps 20 respectively.

[0047] The restraint device 100 in the technical solution of the present application is provided with a heat exchange space 211 in the clamp 20, and further provided with an air flow port 213 connecting the heat exchange space 211 and the outside, so that when the restraint device 100 loaded with the battery 200 is placed in an environment with hot air, the hot air can enter the heat exchange space 211 of the clamp 20 through the air flow port 213. In this way, both the inside and the outside of the clamp 20 can be in contact with the air, increasing the contact area between the clamp 20 and the hot air, thereby accelerating the heat exchange efficiency between the clamp 20 and the hot air, achieving rapid temperature rise of the clamp 20 and improving the heating efficiency of the battery 200. In addition, since the restraint device 100 in the present solution is heated by hot air generated by an external factory or heating furnace, each clamping member 20 does not need to be equipped with cumbersome devices such as heating rods, buffer films, solid-state relays and temperature controllers, which is beneficial to reduce the number of components in the restraint device 100 and simplify the structure of the restraint device 100.

[0048] Please refer to Figures 2 to 4In one embodiment of the present application, the clamp 20 includes a clamp body 21 and fins 23 . The clamp body 21 is provided with a heat exchange space 211 and an air flow opening 213 ; the fins 23 are provided in the heat exchange space 211 .

[0049] The clamp body 21 can be used as the main structure of the clamp 20 to clamp and pressurize the battery 200. The fins 23 can be used to increase the contact area of ​​the hot air entering the heat exchange space 211. The number of fins 23 can be one, two or more. In addition, when the number of fins 23 is multiple, at least some of the fins 23 are fin groups 231 arranged one by one as described below; of course, it can also be that each two adjacent fins 23 are staggered, and the two fins 23 located at the end of each three adjacent fins 23 correspond; or, all fins 23 are staggered. In addition, the plane where the fins 23 are located can be intersecting or parallel to the air flow direction of the air flow through the port 213. It can be seen that the present application does not limit the arrangement of the fins 23. In addition, the fins 23 and the clamp body 21 can be arranged as an integral structure, or as a split structure, and then assembled by any connection method such as bonding or screw connection. In addition, it should be noted that the integrated structure proposed in the present application refers to a structure manufactured by integrated molding, which may be formed by casting, stamping or injection molding.

[0050] In this embodiment, the clamp 20 is configured to include a clamp body 21 and fins 23, so that the fins 23 can further increase the contact area with the hot air, thereby facilitating further improving the heat exchange efficiency between the clamp 20 and the hot air.

[0051] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, the heat exchange space 211 is a cavity structure, and the heat exchange space 211 includes two first cavity walls 215 relatively spaced apart in a first direction, and at least one of the two first cavity walls 215 is provided with a fin 23 protruding therefrom.

[0052] The heat exchange space 211 is a cavity structure, that is, the interior of the plate body can be hollowed out to form a hollow structure. Among them, the shape of the cavity formed by the heat exchange space 211 can be the same as the shape of the clamping member 20, for example: both are rectangular or cubed. In addition, since at least two clamping members 20 are arranged side by side in the first direction, the first cavity wall 215 of the heat exchange space 211 can correspond to the battery 200 and clamp it. For example: when the first direction is the left and right direction as described above, the clamping member 20 is clamped on both sides of the left and right large surfaces of the battery 200, and at this time, the two first cavity walls 215 are the left and right cavity walls of the heat exchange space 211. At least one first cavity wall 215 is convexly provided with a fin 23, that is, only one first cavity wall 215 can be provided with a fin 23, or both first cavity walls 215 can be provided with a fin 23. In addition, the plane where the fin 23 is located can be horizontally arranged or vertically arranged.

[0053] In this embodiment, the heat exchange space 211 is set as a cavity structure, so that the heat exchange space 211 can have a larger volume, thereby facilitating the arrangement of the fins 23 in the heat exchange space 211. Furthermore, the fins 23 are arranged on the first cavity wall 215 in the clamping member 20 for clamping the battery 200, so that the fins 23 can transfer the heat to the first cavity wall 215 in a timely and sufficient manner after exchanging heat with the hot air, thereby facilitating the first cavity wall 215 to quickly heat the corresponding battery 200.

[0054] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, at least one first cavity wall 215 is provided with a plurality of fins 23 . On the same first cavity wall 215 , at least some of the fins 23 are arranged side by side and spaced apart to form a fin group 231 .

[0055] At least some of the fins 23 on the same first cavity wall 215 are configured as a fin group 231, that is, the same first cavity wall 215 may be formed with at least one fin group 231, or may be formed with at least one fin group 231 and at least one independent fin 23. In addition, the multiple fins 23 in the fin group 231 may be arranged in sequence along the first direction, or in the left-right direction. Of course, the multiple fins 23 in the fin group 231 may also be arranged in sequence along the up-down direction.

[0056] In this embodiment, at least part of the fins 23 on the same first cavity wall 215 are arranged side by side and spaced apart to form a fin group 231, so that the fins 23 can be distributed more regularly, so as to increase the number of fins 23 as much as possible within the limited space of the heat exchange space 211, thereby improving the heat exchange efficiency between the clamp 20 and the hot air.

[0057] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, at least two fin groups 231 are provided on at least one first cavity wall 215, and the at least two fin groups 231 are arranged side by side and spaced apart.

[0058] In this embodiment, at least two spaced fin groups 231 are provided on the same first cavity wall 215, which can not only increase the number of fins 23, but also allow hot air flow to pass through the gaps between the fin groups 231, thereby increasing the contact area with the hot air while improving the fluidity of the hot air flow, thereby further improving the heat exchange efficiency between the clamp 20 and the hot air.

[0059] Please refer to Figure 3 In one embodiment of the present application, fins 23 are provided on both first cavity walls 215 , and the fins 23 on the two first cavity walls 215 correspond to each other and are spaced apart.

[0060] The fins 23 on the two first cavity walls 215 are spaced apart correspondingly, that is, the fins 23 on the two first cavity walls 215 may be symmetrically arranged.

[0061] In this embodiment, fins 23 are provided on both first cavity walls 215, so that both first cavity walls 215 can have a high heat transfer efficiency, so as to quickly heat up the batteries 200 located on the left and right sides of the clamp 20. Furthermore, the fins 23 on the two first cavity walls 215 are symmetrically arranged, which can improve the uniformity of heating up the batteries 200 installed on the restraint device 100. At the same time, the fins 23 can be distributed very regularly on the clamp body 21, which is conducive to improving the convenience of processing and manufacturing the clamp 20.

[0062] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, the heat exchange space 211 includes two second cavity walls 217 relatively spaced apart in the second direction, and the second direction intersects with the first direction; the two second cavity walls 217 and the two first cavity walls 215 are enclosed and configured to form the heat exchange space 211, and in a third direction intersecting the first direction and the second direction, the two second cavity walls 217 and the two first cavity walls 215 are also enclosed and configured to form two relative air flow openings 213.

[0063] When the first direction is the left-right direction as described above, the second direction may be the front-back direction, and the third direction may be the up-down direction. Two opposite airflow openings 213 may be respectively disposed at the upper and lower ends of the plate body.

[0064] In this embodiment, two second cavity walls 217 and two first cavity walls 215 are enclosed in the third direction to form two opposite airflow openings 213, so that the batteries 200 located on both sides of the clamping member 20 in the first direction will not cover the airflow openings 213, so that the clamping member 20 can clamp the battery 200 and provide hot air to enter from different sides, so as to take into account both the clamping effect and the air flow effect of the battery 200. At the same time, the upper and lower ends of the clamping member body 21 are opened, so that the structure of the clamping member body 21 can be simplified.

[0065] Please refer to Figure 4 In one embodiment of the present application, the plane where the fins 23 are located intersects in the third direction.

[0066] In this embodiment, the plane where the fins 23 are located intersects in the third direction, which means that the fins 23 are arranged horizontally. At this time, since the two air flow openings 213 are distributed in the up-down direction, when the hot air enters the heat exchange space 211, the fins 23 can block part of the hot air, prolonging the contact time between the hot air and the fins 23, thereby further improving the heat exchange effect between the clamp 20 and the hot air.

[0067] Please refer to Figures 1 to 4 In one embodiment of the present application, the carrier 10 includes a base 11 and a frame 13, the frame 13 has two ends of an opening, one of which is connected to the base 11, and the other of which is enclosed to form a mounting port 130, and the base 11 and the mounting port 130 are arranged in a third direction; the base 11 is provided with a connecting port 131, and at least a portion of the connecting port 131 is correspondingly connected to an air flow port 213 arranged in the clamp 20 near the base 11.

[0068] The base 11 can be located at the lower side of the clamp 20, and can support the product after the battery 200 is installed. The frame 13 can be arranged around the circumference of the base 11, and a mounting port 130 is formed at the upper end. The connecting port 131 provided on the base 11 can be used to be connected to the two airflow ports 213 in the clamp 20 at the lower end, so that hot air can pass through the connecting port 131 and enter the heat exchange space 211 through the airflow port 213. The shape of the connecting port 131 can be the same as the shape of the airflow port 213, or it can be different, including that at least part of the connecting port 131 is connected to the airflow port 213.

[0069] In the present embodiment, the support frame 10 is configured to include a base 11 and a frame 13, so that the base 11 can support the product, thereby improving the stability of the product when installed on the restraint device 100. In addition, the frame 13 can be used to provide an installation position so as to slide the clamp 20. For example, a slide rod 133 can be provided on the frame 13, and the clamp body 21 in the clamp 20 can be provided with a slide hole 219 separated from the heat exchange space 211, so as to be slidably mounted on the slide rod 133 through the slide hole 219. Of course, a slide groove can also be provided on the frame 13, and the clamp body 21 in the clamp 20 can be provided with a slider, and the slider is slidably installed in the slide groove. In addition, the drive screw 51 in the drive mechanism 50 introduced above can also be threadedly penetrated on the frame 13.

[0070] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, the clamping member 20 further includes a reinforcing plate 25 , which is disposed in the heat exchange space 211 ; the reinforcing plate 25 connects the two first cavity walls 215 , and is disposed relatively spaced apart from the second cavity wall 217 .

[0071] The reinforcing plate 25 can be used to connect and reinforce the two first cavity walls 215. The number of reinforcing plates 25 can be one, or two or more. The reinforcing plate 25 can be an integral structure with the clamp body 21, or a separate structure, and then connected and assembled by any means such as bonding or screw connection.

[0072] In this embodiment, a reinforcing plate 25 is further provided in the heat exchange space 211 , which can enhance the processing strength of the clamping member 20 , so as to subsequently clamp and pressurize the battery 200 stably.

[0073] Please refer to Figure 3 and Figure 4 In one embodiment of the present application, the number of reinforcing plates 25 is at least two, and at least two reinforcing plates 25 are arranged side by side and spaced apart along the second direction, and divide the heat exchange space 211 into a plurality of subspaces 2111, and each subspace 2111 is provided with a fin 23.

[0074] At least two reinforcing plates 25 may be arranged at uniform intervals in the second direction. Of course, they may also be arranged at uneven intervals. In each subspace 2111 separated by the reinforcing plates 25, at least one fin set 231 may be arranged on each first cavity wall 215.

[0075] In this embodiment, the number of reinforcing plates 25 is set to at least two arranged at intervals along the second direction, so that at least two locations in the second direction can strengthen the structural strength of the clamping member 20, thereby improving the strengthening effect of the clamping member 20. Furthermore, fins 23 are provided in each subspace 2111, so that heat exchange with hot air can be achieved in each subspace 2111, thereby improving the heat exchange efficiency between the clamping member 20 and the hot air.

[0076] In one embodiment of the present application, the clamping member 20 is an integrated structure.

[0077] In this embodiment, the clamping member 20 is provided as an integral structure, so that the clamping member 20 can be manufactured by integral molding, and the assembly process is omitted, which is beneficial to improving the production efficiency of the clamping member 20. At the same time, the connection strength of the connection between the clamping member body 21, the fins 23 and the reinforcing plate 25 in the clamping member 20 can also be enhanced, which is beneficial to further improve the structural strength of the clamping member 20.

[0078] In one embodiment of the present application, the clamping member 20 is made of aluminum.

[0079] In this embodiment, the material of the clamping member 20 is set to be aluminum, which can make it have good thermal conductivity, thereby facilitating the improvement of the heat exchange efficiency of the clamping member 20. At the same time, the clamping member 20 can also have good strength, so as to effectively clamp and pressurize the battery 200. Of course, in other embodiments, the material of the clamping member 20 can also be iron or copper.

[0080] Please refer to Figures 1 to 3 In one embodiment of the present application, the clamping member 20 includes two back-to-back abutment surfaces 2151 in the first direction, and the restraint device 100 also includes a contoured boss 30 , which is disposed on the abutment surface 2151 .

[0081] The abutting surface 2151 can also be said to be the outer surface of the first cavity wall 215 described above. The shape of the profiling boss 30 can be the same as the shape of the battery 200, for example, it can be set as a rectangular parallelepiped or a cube. Among them, the profiling boss 30 and the clamping member 20 can be an integral structure, of course, they can also be a separable structure, and can be fixedly connected and assembled or detachably connected and assembled as described below. In addition, the clamping member 20 can be provided with one profiling boss 30 on the same abutting surface 2151, or it can be provided with at least two profiling bosses 30 distributed along the second direction.

[0082] In this embodiment, a contoured boss 30 is provided on the abutment surface 2151 of the clamping member 20, so that the clamping member 20 can perform targeted abutment and clamping on the area where the electrode assembly in the battery 200 is located via the contoured boss 30, thereby facilitating improving the clamping and pressurizing effect on the battery 200.

[0083] Please refer to Figure 2 and Figure 3 In one embodiment of the present application, the restraint device 100 further includes a thermally conductive flexible pad 40 , which is disposed on the contoured boss 30 and covers the surface of the contoured boss 30 except the corresponding abutting surface 2151 .

[0084] The thermally conductive flexible pad 40 can have thermal conductivity and be made of flexible material. The thermally conductive flexible material can be thermally conductive silicone as described below, or can be a flexible fiber bio-electronic composite material. In addition, the thermally conductive flexible pad 40 and the contoured boss 30 can be connected by bonding as described below, or can be connected by screws or other methods. The present application does not limit the installation method of the thermally conductive flexible pad 40 on the contoured boss 30.

[0085] In this embodiment, a thermally conductive flexible pad 40 is provided on the profiling boss 30, so that when the clamping member 20 clamps the pressurized battery 200, the thermally conductive flexible pad 40 can play a buffering role, reducing the possibility of pressure damage to the surface of the battery 200. At the same time, through the thermal conductivity of the thermally conductive flexible pad 40, the heat on the profiling boss 30 can be better transferred to the battery 200.

[0086] In one embodiment of the present application, the thermally conductive flexible pad 40 is bonded to the contoured boss 30 .

[0087] In this embodiment, the thermally conductive flexible pad 40 is bonded to the contoured boss 30 by glue, so that the connection structure between the two can be hidden, and thus the buffering effect of the thermally conductive flexible pad 40 will not be affected. At the same time, the contact area between the thermally conductive flexible pad 40 and the contoured boss 30 can also be increased, which is conducive to improving the stability of the installation of the thermally conductive flexible pad 40. Moreover, the adhesive connection will not damage the structures of the thermally conductive flexible pad 40 and the contoured boss 30.

[0088] In one embodiment of the present application, the thermally conductive flexible pad 40 is made of thermally conductive silicone.

[0089] In this embodiment, the material of the thermally conductive flexible pad 40 is set to be thermally conductive silicone, which can make the thermally conductive flexible pad 40 easy to obtain in the market and low in cost. At the same time, the thermally conductive flexible pad 40 can also have good thermal conductivity and flexibility.

[0090] Please refer to Figure 5In one embodiment of the present application, the contoured boss 30 is detachably disposed on the abutting surface 2151 .

[0091] In this embodiment, the profiling boss 30 is set to be detachably connected, so that the profiling boss 30 can be replaced according to the size of the battery 200. The detachable connection method of the profiling boss 30 can be a buckle connection of the buckle 31 and the buckle hole 2153 as described below, or it can be a screw connection or a magnetic connection, etc. The present application does not limit the detachable connection method of the profiling boss 30.

[0092] Please refer to Figure 5 In one embodiment of the present application, one of the contoured boss 30 and the abutting surface 2151 is provided with a buckle 31 , and the other one is provided with a buckle hole 2153 , and the buckle 31 is buckled into the buckle hole 2153 .

[0093] In the embodiment, the profiling boss 30 and the clamp body 21 of the clamp 20 are arranged to be buckled, so that the connection structure of the profiling boss 30 is relatively simple, which is conducive to improving the convenience of disassembly and assembly of the profiling boss 30. In addition, the connection structure formed by the buckle 31 and the buckle hole 2153 can also be hidden between the profiling boss 30 and the clamp body 21 of the clamp 20, which can reduce the possibility of the connection structure between the profiling boss 30 and the clamp 20 being damaged. Among them, the number of buckles 31 can be set to one, or two or more, and the number of buckle holes 2153 can be set corresponding to the number of buckles 31.

[0094] Please refer to Figure 3 In one embodiment of the present application, all corners of the contoured boss 30 are chamfered except for the corners abutting against the abutting surface 2151 .

[0095] Chamfers can be rounded or beveled.

[0096] In this embodiment, the chamfer of the side of the contoured protrusion close to the battery 200 is chamfered to reduce the possibility of causing pressure damage to the battery 200.

[0097] In one embodiment of the present application, the material of the contoured boss 30 is aluminum.

[0098] In this embodiment, the material of the profiling boss 30 is set to be aluminum, which can make it have good thermal conductivity, thereby facilitating the rapid transfer of heat from the clamping member 20 to the battery 200, thereby achieving rapid heating and temperature rise of the battery 200. At the same time, the profiling boss 30 can also have good strength, so as to effectively clamp and pressurize the battery 200. Of course, in other embodiments, the material of the profiling boss 30 can also be iron or copper.

[0099] Please refer to Figures 1 to 5In one embodiment of the present application, the restraint device 100 includes a carrier 10 and at least two clamps 20; at least two clamps 20 are both arranged on the carrier 10 and arranged side by side in sequence along the first direction; a heat exchange space 211 is provided in the clamp 20, and the clamp 20 is also provided with an air flow opening 213 connecting the heat exchange space 211 and the outside. The clamp 20 includes a clamp body 21 and fins 23, and the clamp body 21 is provided with a heat exchange space 211 and an air flow opening 213; the fins 23 are arranged in the heat exchange space 211. The heat exchange space 211 is a cavity structure, and the heat exchange space 211 includes two first cavity walls 215 spaced relatively in the first direction, and at least one of the two first cavity walls 215 is convexly provided with a fin 23. At least one first cavity wall 215 is convexly provided with a plurality of fins 23, and on the same first cavity wall 215, at least some of the fins 23 are arranged side by side and spaced to form a fin group 231. At least two fin groups 231 are provided on at least one first cavity wall 215, and at least two fin groups 231 are arranged side by side and spaced apart. Fins 23 are provided on both first cavity walls 215, and the fins 23 on the two first cavity walls 215 correspond to each other and are spaced apart. The heat exchange space 211 includes two second cavity walls 217 spaced apart from each other in the second direction, and the second direction intersects with the first direction; the two second cavity walls 217 and the two first cavity walls 215 are enclosed and configured to form the heat exchange space 211, and in the third direction intersecting with the first direction and the second direction, the two second cavity walls 217 and the two first cavity walls 215 are also enclosed and configured to form two opposite air flow openings 213. The plane where the fin 23 is located intersects in the third direction; the support frame 10 includes a base 11 and a frame 13, one of the two ends of the frame 13 having an opening is connected to the base 11, and the other of the two ends is enclosed to form a mounting port 130, and the base 11 and the mounting port 130 are arranged in the third direction; the base 11 is provided with a connecting port 131, and at least part of the connecting port 131 is correspondingly connected to the air flow port 213 arranged near the base 11 in the clamp 20. The clamp 20 also includes a reinforcing plate 25, which is arranged in the heat exchange space 211; the reinforcing plate 25 connects the two first cavity walls 215, and is arranged relative to the second cavity wall 217. The number of reinforcing plates 25 is at least two, and at least two reinforcing plates 25 are arranged side by side and spaced along the second direction, and the heat exchange space 211 is divided into a plurality of subspaces 2111, and each subspace 2111 is provided with a fin 23. The clamp 20 is an integral structure; the material of the clamp 20 is aluminum. The clamp body 21 includes two abutment surfaces 2151 facing each other in the first direction, and the restraint device 100 also includes a contoured boss 30, which is disposed on the abutment surface 2151. The restraint device 100 also includes a thermally conductive flexible pad 40, which is disposed on the contoured boss 30 and covers the surface of the contoured boss 30 except the surface corresponding to the abutment surface 2151. The thermally conductive flexible pad 40 is bonded to the contoured boss 30; the material of the thermally conductive flexible pad 40 is thermally conductive silicone. The contoured boss 30 is detachably disposed on the abutment surface 2151.One of the profiling boss 30 and the abutting surface 2151 is provided with a buckle 31, and the other one is provided with a buckle hole 2153, and the buckle 31 is engaged with the buckle hole 2153. The profiling boss 30 is chamfered except for the corners abutting against the abutting surface 2151. The material of the profiling boss 30 is aluminum.

[0100] In one embodiment of the present application, the use process of the restraint device 100 can be: placing each battery 200 between each clamping member 20; then driving the clamping member 20 to clamp the battery 200 through the driving mechanism 50, and stopping the movement when the clamping member 20 slides along the first direction to a preset position, thereby completing the clamping and pressurizing of the battery 200; then, the restraint device 100 loaded with the battery 200 can be placed in a factory or a heating furnace to pass hot air for heating; due to the setting of the heat exchange space 211 and the fins 23 on the clamping member 20, the hot air enters the inner side of the clamping member 20 for rapid heat exchange, thereby realizing rapid heating of the clamping member 20; then, the clamping member 20 can quickly transfer the heat to the battery 200 through the contoured boss 30, thereby realizing rapid heating of the battery 200.

[0101] The present application also proposes a battery production equipment, which includes a restraint device 100. The specific structure of the restraint device 100 refers to the above embodiment. Since the battery production equipment adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, when the restraint device 100 is applied to the battery formation process as described above, the battery production equipment can be a battery formation equipment. And when the restraint device 100 is applied to the battery aging process as described above, the battery production equipment can be a battery aging equipment.

[0102] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A restraint device, characterized in that: include: Carrying frame; and At least two clamping members are both provided on the carrier and are arranged side by side in sequence along a first direction; A heat exchange space is provided in the clamping member, and the clamping member is also provided with an air flow opening connecting the heat exchange space and the outside.

2. The restraint device according to claim 1, characterized in that The clamping member comprises: A clamping member body, wherein the clamping member body is provided with the heat exchange space and the air flow opening; and Fins are arranged in the heat exchange space.

3. The restraint device according to claim 2, characterized in that: The heat exchange space is a cavity structure, and the heat exchange space includes two first cavity walls that are relatively spaced apart in the first direction, and the fin is protrudingly provided on at least one of the two first cavity walls.

4. The restraint device according to claim 3, characterized in that At least one of the first cavity walls is protrudingly provided with a plurality of the fins. On the same first cavity wall, at least part of the fins are arranged side by side and spaced apart to form a fin group.

5. The restraint device according to claim 4, characterized in that: At least two fin groups are provided on at least one of the first cavity walls, and at least two fin groups are arranged side by side and spaced apart.

6. The restraint device according to claim 3, characterized in that: The two first cavity walls are both provided with the fins, and the fins on the two first cavity walls correspond to each other and are arranged at intervals.

7. The restraint device according to claim 3, characterized in that: The heat exchange space includes two second cavity walls spaced relatively from each other in a second direction, and the second direction intersects with the first direction; The two second cavity walls and the two first cavity walls are enclosed to form the heat exchange space, and in a third direction intersecting the first direction and the second direction, the two second cavity walls and the two first cavity walls are further enclosed to form two opposite air flow openings.

8. The restraint device according to claim 7, characterized in that The plane where the fins are located intersects with the third direction; And / or, the support frame includes a base support and a frame body, the frame body has two openings at either end, one of which is connected to the base support, and the other of which is enclosed to form a mounting port, and the base support and the mounting port are arranged in the third direction; the base support is provided with a connecting through-port, and at least a portion of the connecting through-port is correspondingly connected to the airflow through-port arranged in the clamping member near the base support.

9. The restraint device according to claim 7, characterized in that: The clamping member further comprises a reinforcing plate, and the reinforcing plate is arranged in the heat exchange space; The reinforcing plate connects the two first cavity walls and is arranged relative to and spaced from the second cavity wall.

10. The restraint device according to claim 9, characterized in that The number of the reinforcing plates is at least two, and at least two of the reinforcing plates are arranged side by side and spaced apart along the second direction, and divide the heat exchange space into a plurality of subspaces, and each of the subspaces is provided with the fins.

11. The restraint device according to claim 1, characterized in that: The clamping member is provided as an integral structure; And / or, the clamping member is made of aluminum.

12. The restraint device according to any one of claims 1 to 11, characterized in that The clamping member includes two abutment surfaces facing each other in the first direction, and the restraint device also includes a contoured boss, which is arranged on the abutment surfaces.

13. The restraint device according to claim 12, characterized in that The restraint device also includes a thermally conductive flexible pad, which is arranged on the contoured boss and covers the surface of the contoured boss except the surface corresponding to the abutting surface.

14. The restraint device according to claim 13, characterized in that The thermally conductive flexible pad is bonded to the contoured boss; And / or, the thermally conductive flexible pad is made of thermally conductive silicone.

15. The restraint device according to claim 12, characterized in that The contoured boss is detachably arranged on the abutting surface.

16. The restraint device according to claim 15, characterized in that One of the contoured boss and the abutting surface is provided with a buckle, and the other one is provided with a buckle hole, and the buckle is buckled in the buckle hole.

17. The restraint device according to claim 12, characterized in that: The contoured boss is chamfered except for the corners where it abuts against the abutting surface; And / or, the contoured boss is made of aluminum.

18. A battery production device, characterized in that: Comprising a restraint device as claimed in any one of claims 1 to 17.

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