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. Wherein the at least two clamping pieces are both arranged on the bearing frame and are sequentially arranged side by side in the first direction, the clamping pieces are provided with containing cavities, and phase change materials are arranged in the containing cavities. According to the technical scheme, the number of parts of the restraining device can be reduced, so that the structure of the restraining device is simplified.

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 the production and manufacturing process of batteries, it is usually necessary to use a restraint device to restrain the battery and heat the battery at the same time. However, the restraint device in the related art uses electric heating to heat the battery. At this time, heating rods are required on both sides of the clamping piece that clamps the battery in the restraint device, and auxiliary devices such as buffer films, solid-state relays and thermostats are also required. This makes the restraint device have a large number of parts and a more complicated structure. Utility Model Content

[0003] The main purpose of the present application is to provide a restraint device, aiming to reduce the number of parts of the restraint device to simplify the structure of the restraint device.

[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 are arranged on the support frame and are arranged side by side in sequence along the first direction. The clamping members are provided with a receiving cavity, and a phase change material is arranged in the receiving cavity.

[0007] The restraint device of the technical solution of the present application integrates a phase change material in the clamping part, so that after the clamping part is heated, heat can be stored through the phase change material, and then the clamping part can heat the clamped battery through the heat stored in the phase change material. At this time, the clamping part does not need to be additionally configured with a buffer film, a solid-state relay, a thermostat and other auxiliary devices like the traditional electric heating method, and only the phase change material is provided in the clamping part. In this way, the number of parts of the restraint device is reduced, thereby simplifying the structure of the restraint device. At the same time, the clamping part can be used as a heat source to directly heat the battery and has a large abutment area with the battery, which is beneficial to improve the efficiency and uniformity of heating the battery. In addition, when the battery is subsequently released from restraint, the volume contraction characteristic of the phase change material after cooling and solidification can also be used to quickly complete the release of the battery, thereby omitting the setting of the contact restraint device.

[0008] In some embodiments, the clamping member is provided with a perfusion hole, which is connected to the accommodating cavity; the restraining device further comprises a blocking member, which is connected to the clamping member and is configured to block the connection between the perfusion hole and the outside. Thus, the accommodating cavity of the clamping member can be directly perfused with liquid phase change material through the perfusion hole, and the amount of phase change material loaded can be conveniently controlled, thereby facilitating the convenience of loading the phase change material.

[0009] In some embodiments, the blocking member is a sealing plug, which is inserted into the injection hole, thereby making the connection between the blocking member and the clamping member simpler, thereby facilitating the installation and setting of the blocking member on the clamping member.

[0010] In some embodiments, the blocking member is a sealing cover, which is arranged outside the clamping member and covers the injection hole. Thus, the structure of the blocking member is not easily affected by the size and shape of the injection hole, which is conducive to improving the flexibility of setting the blocking member.

[0011] In some embodiments, the sealing cover is welded to the clamp; or, the sealing cover is detachably connected to the clamp, and the restraint device further comprises a sealing ring, which is sandwiched between the sealing cover and the clamp and arranged around the injection hole. Thus, welding the sealing cover to the clamp can improve the sealing of the connection between the two. The sealing cover is arranged to be detachable, so that it is convenient to open the injection hole later to supplement or replace the phase change material in the receiving cavity of the clamp; further, the arrangement of the sealing ring can improve the sealing between the sealing cover and the clamp.

[0012] In some embodiments, the clamping member includes two abutting surfaces and a connecting surface, the two abutting surfaces are arranged in a relative spacing in the first direction; the connecting surface connects the two abutting surfaces, and the injection hole is arranged on the connecting surface. Therefore, the injection hole and the blocking member described above will not affect the clamping of the product, so that the clamping member can fully and effectively abut and clamp the product.

[0013] In some embodiments, the material of the clamp is aluminum or stainless steel; and / or, the shape of the accommodating cavity is the same as the shape of the clamp; and / or, the material of the phase change material is paraffin; and / or, when the phase change material is in a liquid state, the volume of the phase change material and the volume of the accommodating cavity are equal. Thus, by setting the material of the clamp to aluminum or stainless steel, the clamp can take into account both strength and deformation capacity, so that the clamp can stably clamp the product while generating corresponding deformation protrusions when the phase change material absorbs heat and expands. By matching the shape of the accommodating cavity with the shape of the clamp, the utilization rate of the space inside the clamp can be improved. By setting the material of the phase change material to paraffin, it can have better heat storage capacity and reduce the cost of use. By setting the volume of the liquid phase change material to be consistent with the volume of the accommodating cavity, the accommodating cavity can be filled with the phase change material, thereby enhancing the extrusion protrusion effect of the phase change material on the clamp during the subsequent heat absorption and expansion process.

[0014] In some embodiments, at least two clamping members are spaced apart in the first direction and fixed relative to the carrier. Thus, the clamping members are arranged at fixed points, so that during use, the clamping members can automatically clamp and heat the product, and automatically release the clamping restraint, thereby realizing multiple functions through one structure of the clamping member, which is conducive to simplifying the structural setting of the restraint device.

[0015] In some embodiments, one of the clamping member and the carrier is provided with an inserting protrusion, and the other is provided with an inserting groove, and the inserting protrusion is inserted into the inserting groove. In this way, the installation process of the clamping member can be made simpler, which is conducive to improving the convenience of installing the clamping member. At the same time, it also makes the connection structure between the clamping member and the carrier simpler, which is conducive to improving the convenience of manufacturing the restraint device.

[0016] In some embodiments, the support frame includes a base and a frame; the frame has two ends with one of the ends being opened and connected to the base, and the other of the ends is enclosed to form a mounting opening; the arrangement direction of the base and the mounting opening is defined as a second direction, and the second direction intersects the first direction; the frame is provided with a plug-in protrusion or a plug-in groove, and the plug-in groove is extended along the second direction. Thus, 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 when installed on the restraint device. The frame can be provided with an exposed plug-in protrusion or a plug-in groove to facilitate the alignment and insertion of the clamp.

[0017] In some embodiments, in a third direction intersecting the first direction and the second direction, one of the insertion protrusions and the insertion grooves is provided on both sides of the clamping member, and the other of the insertion protrusions and the insertion grooves is provided on both sides of the frame. Thus, the clamping member can be inserted and limited at both the front and rear sides, which is beneficial to improve the stability of the clamping member installed on the carrier.

[0018] In some embodiments, the clamping member is slidably disposed on the carrier along the first direction, and the restraining device further comprises a driving mechanism; the driving mechanism is in transmission connection with at least one of the two clamping members located at the end, and the driving mechanism is configured to drive at least two clamping members to slide. Thus, the clamping member is configured to slide along the first direction, and the driving mechanism is provided in cooperation, so that the spacing between two adjacent clamping members can be adjusted, thereby facilitating the control of the degree of clamping of the product.

[0019] In some embodiments, the clamping member is detachably mounted on the carrier. Thus, the clamping member can be removed separately for heating, and then mounted on the carrier after the phase change material in the clamping member is heated to above the melting point. In this case, the heating efficiency of the clamping member can be improved, and the clamping member can be adaptively replaced according to the size of the product.

[0020] In some embodiments, the carrier is provided with a slide groove, which is extended along the first direction; the restraint device also includes a guide mechanism, which includes at least two sliders, at least two sliders are slidably arranged in the slide groove, and each clamp is detachably connected to a slider. Thus, the stability and accuracy of the sliding of the clamp can be improved through the cooperation of the slide groove and the slider. At the same time, the sliding connection and the detachable connection are respectively arranged on different components, which improves the convenience of the slidable and detachable setting of the clamp.

[0021] In some embodiments, the position of the clamping member corresponding to the slider is provided with a connecting ear, and the connecting ear and the slider are connected by a locking screw; and / or, the carrier includes a base and a frame; the frame has two ends of an opening, one of which is connected to the base, and the other of which is enclosed to form a mounting port; the arrangement direction of the base and the mounting port is defined as a second direction, and the second direction intersects the first direction; the number of the slide grooves is at least two, and at least two slide grooves are respectively located on both sides of the third direction of the frame intersecting the first direction and the second direction; the number of the guide mechanism is at least two, and each guide mechanism is provided with a corresponding slide groove. Thus, by providing the connecting ear, a connection position can be given so as to be connected in position with the slider. And further, by penetrating the locking screw for connection, the convenience of disassembling and assembling the clamping member on the carrier can be further improved. Slide grooves are provided on both the front and rear sides of the frame, so that the clamping member can be slidably and detachably connected on the front and rear sides, thereby facilitating the improvement of the stability of the clamping member sliding on the carrier and the stability of the connection.

[0022] In some embodiments, the driving mechanism includes a driving screw and a force plate, the driving screw is extended along a first direction, the driving screw is passed through the carrier, and is threadedly connected to the carrier; the force plate is connected to one end of the driving screw, and can be driven by the rotating driving screw to slide along the first direction, the force plate and the clamping member located at the end are relatively arranged, and the force plate is configured to abut and drive the clamping member located at the end. Thus, the driving screw can stably and accurately drive the force plate to slide, and then stably drive the clamping member to the required position, so that the subsequent clamping member can accurately and stably clamp the product. Moreover, after being driven into place, the driving screw can also be self-locking. The force plate can increase the abutment area with the clamping member at the end to improve the stability of the clamping member drive and avoid the possibility of damage to the clamping member due to excessive local stress.

[0023] The present application also proposes a battery production device, comprising the above-mentioned restraint device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 This is a schematic structural diagram of an embodiment of the restraint device of the present application;

[0026] Figure 2 for Figure 1 Schematic diagram of the middle restraint device from another perspective;

[0027] Figure 3 for Figure 1 A schematic structural diagram of a clamping member of the middle restraint device;

[0028] Figure 4 for Figure 1 A schematic cross-sectional view of a middle restraint device;

[0029] Figure 5 A cross-sectional schematic diagram of another embodiment of the restraint device of the present application;

[0030] Figure 6 This is a structural schematic diagram of another embodiment of the restraint device of the present application;

[0031] Figure 7 for Figure 6 A schematic cross-sectional view of a central restraint device.

[0032] Description of Figure Numbers:

[0033] 100. restraint device; 10. carrier frame; 11. base; 13. frame; 131. mounting port; 133. plug-in slot; 135. slide slot; 20. clamping member; 21. accommodating chamber; 211. phase change material; 23. abutting surface; 25. connecting surface; 251. injection hole; 253. plug-in protrusion; 255. connecting ear; 30. blocking member; 31. sealing plug; 33. sealing cover; 40. sealing ring; 50. driving mechanism; 51. driving screw; 53. force plate; 60. guiding mechanism; 61. slider; 70. locking screw; 200. product.

[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] However, the restraint device in the related art mostly adopts electric heating to heat the battery. In this case, heating rods need to be provided on both sides of the clamping member for clamping the battery in the restraint device, and auxiliary devices such as a buffer film, a solid-state relay and a temperature controller need to be configured. This makes the restraint device have a large number of parts and a complex structure.

[0041] Therefore, based on the above considerations, in order to solve the technical problem of complex structure caused by the large number of parts of the restraint device in the related art, the present application proposes a new type of restraint device. The restraint device innovatively integrates phase change material in the clamping part, so that the clamping part can directly heat the battery through the heat storage property of the phase change material, omitting the setting of auxiliary devices such as buffer film, solid-state relay and thermostat, thereby reducing the number of parts of the restraint device and simplifying the structure of the restraint device.

[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 by way of implementation:

[0044] Please refer to Figure 1 , Figure 2 as well as Figure 4 In one embodiment of the present application, the restraint device 100 proposed in the present application includes a supporting frame 10 and at least two clamping members 20; at least two clamping members 20 are both arranged on the supporting frame 10 and are arranged side by side in sequence along a first direction, and the clamping member 20 is provided with a accommodating cavity 21, and a phase change material 211 is provided in the accommodating cavity 21.

[0045] The carrier 10 can be used to install the clamping member 20 and support the product 200 (for example, the battery described above) that needs to be clamped between the clamping members 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 clamping member 20 can be used to clamp the product 200 to restrain the product 200 and reduce the expansion of the product 200 during the processing process. Among them, the clamping member 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 clamping member 20. In addition, the clamping member 20 can be a rectangular parallelepiped, of course, it can also be a cube, so as to fit and abut against the product 200. For example: when the product 200 is a square shell battery, the clamping member 20 can abut against the large surface of the battery. Of course, the clamping member 20 can also be a circular shape or other shapes, etc., and the present application does not limit the shape of the clamping member 20. In addition, the clamping member 20 can be set at a fixed point on the carrier 10. That is, after the clamping member 20 is installed on the carrier 10, the position is fixed and cannot be moved. At this time, the connection between the clamping member 20 and the carrier 10 can be a fixed connection or a detachable connection, and each clamping member 20 can be arranged at intervals in the first direction so as to allow the product 200 to be clamped to be placed. Of course, the clamping member 20 can also be slidably arranged on the carrier 10 as described below. That is, after the clamping member 20 is installed on the carrier 10, it can slide along the first direction. In addition, the number of clamping members 20 can be two, and of course it can also be three or more, and the present application does not limit the number of clamping members 20. In addition, the product 200 can be completely clamped between the two clamping members 20. Of course, the clamping member 20 at the end in the first direction can also be used to cooperate with the carrier 10 or other plates to clamp the product 200. In addition, the accommodating cavity 21 provided on the clamping member 20 can be used to install and accommodate the phase change material 211. Among them, the shape of the accommodating cavity 21 can be set to be the same as the shape of the clamping member 20, for example: both are set to be a cuboid or a cube. Of course, the shape of the accommodating cavity 21 and the shape of the clamping member 20 can also be set to be different. In addition, the phase change material 211 can be used to store heat, so that after the clamping member 20 clamps the product 200, the clamping member 20 can heat and increase the temperature of the product 200 during the process of clamping the product 200. Among them, in order to realize the phase change material 211 to store heat, the clamping member 20 can be removed from the carrier 10 and placed in a heating device to be heated to a temperature above the melting point of the phase change material 211. The phase change material 211 absorbs heat and changes from solid phase to liquid phase, and a large amount of energy is required to break the intermolecular force in the process, and then the heat can be stored as latent heat of phase change. Of course, it is also possible to directly put the product 200 into the restraint device 100, and then the restraint device 100 loaded with the product 200 is sent as a whole into a high-temperature furnace or a high-temperature factory environment. Since the ambient temperature is higher than the melting point of the phase change material 211, the phase change material 211 can absorb heat and melt.In addition, the phase change material 211 may be paraffin as described below, or hydrocarbons and organic acid salts, such as ethylene glycol, sodium acetate, or metals and alloys. The present application does not limit the material type of the phase change material 211. In addition, when the phase change material 211 is in a liquid state, the volume of the phase change material 211 may be the same as the volume of the accommodating chamber 21, that is, the accommodating chamber 21 is filled. Of course, the phase change material 211 may not fill the accommodating chamber 21. For example: the phase change material 211 fills 90% or 95% of the volume of the accommodating chamber 21. In addition, the phase change material 211 may be loaded into the accommodating chamber 21 in a solid state, or may be loaded into the accommodating chamber 21 in a solid state.

[0047] The restraint device 100 of the technical solution of the present application integrates a phase change material 211 in the clamp 20, so that after the clamp 20 is heated, heat can be stored through the phase change material 211, and then the clamp 20 can heat the clamped battery through the heat stored in the phase change material 211. At this time, the clamp 20 does not need to be additionally configured with a buffer film, a solid-state relay, a thermostat and other auxiliary devices similar to the traditional electric heating method, and only the phase change material 211 is provided in the clamp 20. In this way, the number of parts of the restraint device 100 is reduced, thereby simplifying the structure of the restraint device 100. At the same time, the clamp 20 can be used as a heat source to directly heat the battery and has a large abutment area with the battery, which is conducive to improving the efficiency and uniformity of heating the battery. In addition, when the battery is subsequently released from restraint, the volume shrinkage of the phase change material 211 after cooling and solidification can also be used to quickly complete the release of the battery, thereby omitting the setting of the contact restraint device 100.

[0048] Please refer to Figure 4 In one embodiment of the present application, the clamping member 20 is provided with an infusion hole 251, which is connected to the accommodating chamber 21; the restraint device 100 also includes a blocking member 30, which is connected to the clamping member 20 and is configured to block the connection between the infusion hole 251 and the outside.

[0049] The perfusion hole 251 can be used to connect the accommodating chamber 21 with the outside world (the outside world is also the outside of the clamping member 20). The shape of the perfusion hole 251 is circular, square, rectangular, etc., and the present application does not limit the shape of the perfusion hole 251. The setting position of the perfusion hole 251 can be set on the connecting surface 25 in the clamping member 20 that does not contact and clamp the product 200 as described below, and of course it can also be set on the abutment surface 23 in the clamping member 20 for contact and clamping the product 200. The present application does not limit the setting position of the perfusion tube. In addition, the number of perfusion holes 251 can be one, and of course it can also be two or more, and the present application does not limit the number of perfusion holes 251. The blocking member can be used to block the connection between the perfusion hole 251 and the outside world, and reduce the possibility of the phase change material 211 in the accommodating chamber 21 flowing out of the perfusion hole 251 in a liquid state. Among them, the blocking member 30 can be a sealing plug 31 arranged in the injection hole 251 as described below, or a sealing cover 33 arranged on the outside of the clamping member 20 as described below, or a control valve installed on the injection pipe protruding from the outside of the clamping member 20. The present application does not limit the structural form of the blocking member 30.

[0050] In this embodiment, by setting the injection hole 251, the liquid phase change material 211 can be directly injected into the receiving chamber 21 of the clamp 20, and the loading amount of the phase change material 211 can be conveniently controlled, thereby facilitating the loading of the phase change material 211. At the same time, the clamp 20 can be set as an integrated structure to simplify the structural setting of the clamp 20 and improve the sealing of the clamp 20. Further, the setting of the blocking member 30 can be used to achieve the sealing of the clamp 20 after the liquid phase change material 211 is completed through the injection hole 251. In addition, it should be noted that in some embodiments, the solid phase change material 211 can also be loaded into the receiving chamber 21 of the clamp 20. At this time, the clamp 20 can be set as several parts that can be disassembled and separated, so that the solid phase change material 211 can be assembled after the clamp 20 is disassembled and separated.

[0051] Please refer to Figure 4 In one embodiment of the present application, the blocking member 30 is a sealing plug 31 , and the sealing plug 31 is inserted into the injection hole 251 .

[0052] The shape of the sealing plug 31 can be the same as that of the perfusion tube. The sealing plug 31 can include a sealing body and an elastic sleeve sleeved on the sealing body. The material of the elastic sleeve can be a material that can be elastically deformed, such as silicone or rubber. In this way, when the sealing plug 31 is installed in the perfusion hole 251, the elastic sleeve can be elastically deformed and form a deformation elastic force. The deformation elastic force can drive the elastic sleeve to elastically press against the hole wall of the perfusion hole 251, thereby sealing the perfusion hole 251. Of course, the sealing plug 31 can also be an elastomer formed by a material that can be elastically deformed, such as silicone or rubber.

[0053] In this embodiment, the blocking member 30 is configured as a sealing plug 31, which can make the connection between the blocking member 30 and the clamping member 20 simpler, thereby facilitating the installation and setting of the blocking member 30 on the clamping member 20. Moreover, the blocking member 30 can be removed from the clamping member 20, thereby facilitating the subsequent replenishment or replacement of the phase change material 211 in the accommodating cavity 21 of the clamping member 20.

[0054] Please refer to Figure 5 In one embodiment of the present application, the blocking member 30 is a sealing cover 33 , which is disposed on the outer side of the clamping member 20 and seals the injection hole 251 .

[0055] The sealing cover 33 can be circular, square or rectangular. The present application does not limit the shape of the sealing cover 33, as long as it can seal the injection hole 251. The sealing cover 33 can be welded to the clamping member 20 as described below, or can be fixedly bonded, or removably screwed or snap-fitted, etc. The present application does not limit the connection method of the sealing cover 33 on the clamping member 20. In addition, the sealing cover 33 can be a plate structure, or a cylindrical structure with an opening at one end, and the present application does not limit the structural type of the sealing cover 33.

[0056] In this embodiment, the blocking member 30 is configured as a sealing cover 33 installed on the outside of the clamping member 20, so that the structure of the blocking member 30 is not easily affected by the size and shape of the injection hole 251, thereby facilitating the flexibility of setting the blocking member 30. In particular, in some embodiments, when the number of the injection holes 251 is set to two or more, the two or more injection holes 251 can also be covered by one sealing cover 33.

[0057] Please refer to Figure 5 In one embodiment of the present application, the sealing cover 33 is detachably connected to the clamping member 20 , and the restraint device 100 further includes a sealing ring 40 , which is sandwiched between the sealing cover 33 and the clamping member 20 and is arranged around the injection hole 251 .

[0058] The detachable connection mode of the sealing cover 33 may be screw connection, snap connection or magnetic connection, etc., and the present application does not limit the detachable connection mode of the sealing cover 33. The sealing ring 40 may be used to seal the connection between the sealing cover 33 and the clamping member 20. The sealing ring 40 may be made of elastically deformable materials such as silicone or rubber that can undergo elastic deformation.

[0059] In this embodiment, the sealing cover 33 is detachable, so that the filling hole 251 can be opened later to supplement or replace the phase change material 211 in the receiving cavity 21 of the clamp 20. The sealing ring 40 can further improve the sealing performance between the sealing cover 33 and the clamp 20.

[0060] In one embodiment of the present application, the sealing cover 33 is welded to the clamping member 20 .

[0061] In this embodiment, the sealing cover 33 is welded to the clamping member 20, which can improve the sealing performance of the connection between the two and make the sealing cover 33 more stably installed on the clamping member 20.

[0062] Please refer to Figures 2 to 4 In one embodiment of the present application, the clamping member 20 includes two abutting surfaces 23 and a connecting surface 25 . The two abutting surfaces 23 are arranged relatively spaced apart in the first direction. The connecting surface 25 connects the two abutting surfaces 23 , and the injection hole 251 is arranged on the connecting surface 25 .

[0063] The abutting surface 23 can be used to contact and clamp the clamped product 200. The first direction can be the left-right direction. In this case, the abutting surface 23 can be the left and right surfaces of the clamping member 20, and the connecting surface 25 can be the four surfaces of the clamping member 20, the top, bottom, front and back. The injection hole 251 can be set on at least one of the four surfaces of the clamping member 20.

[0064] In this embodiment, the injection hole 251 is arranged on the connecting surface 25 of the clamping member 20, and the connecting surface 25 of the clamping member 20 will not contact the clamped product 200, so that the setting of the injection hole 251 and the blocking member 30 introduced above will not affect the clamping of the product 200, so that the clamping member 20 can fully and effectively abut and clamp the product 200.

[0065] Please refer to Figure 4 In one embodiment of the present application, the injection hole 251 is arranged on the upper surface of the connecting surface 25 so that the injection hole 251 can face upward, reducing the possibility of the phase change material 211 located in the accommodating cavity 21 of the clamp 20 flowing out of the injection hole 251 in a liquid state.

[0066] In one embodiment of the present application, the clamping member 20 is made of aluminum or stainless steel.

[0067] In this embodiment, the material of the clamping member 20 is set to aluminum or stainless steel, so that the clamping member 20 can have both strength and deformation ability, so that the clamping member 20 can stably clamp the product 200 while generating corresponding deformation protrusions when the phase change material 211 absorbs heat and expands, thereby facilitating the subsequent stable abutment clamping of the product 200.

[0068] Please refer to Figure 4 In one embodiment of the present application, the shape of the accommodating cavity 21 is the same as the outer shape of the clamping member 20 .

[0069] In this embodiment, the shape of the accommodating cavity 21 and the outer shape of the clamping member 20 are configured to be compatible, which can improve the utilization rate of the space inside the clamping member 20, so as to reduce the volume of the clamping member 20 as much as possible while meeting the requirement for the accommodation amount of the phase change material 211.

[0070] In an embodiment of the present application, the phase change material 211 is made of paraffin.

[0071] In this embodiment, the phase change material 211 is made of paraffin wax, which can make it have better heat storage capacity, thereby improving the heating effect of the subsequent clamping member 20 on the product 200. At the same time, the cost of paraffin wax is also low, which is conducive to reducing the use cost of the restraint device 100.

[0072] Please refer to Figure 4 In one embodiment of the present application, when the phase change material 211 is in a liquid state, the volume of the phase change material 211 is equal to the volume of the accommodating cavity 21 .

[0073] In this embodiment, the volume of the liquid phase change material 211 and the volume of the accommodating cavity 21 are set to be consistent, so that the accommodating cavity 21 is filled with the phase change material 211. At this time, the extrusion protrusion effect of the phase change material 211 on the clamping member 20 in the subsequent endothermic expansion process can be enhanced, so as to improve the subsequent contact and clamping effect of the clamping member 20 on the product 200.

[0074] Please refer to Figure 1 and Figure 2 In one embodiment of the present application, at least two clamping members 20 are spaced apart in the first direction and are fixed relative to the supporting frame 10.

[0075] The clamping member 20 is fixed relative to the supporting frame 10, that is, the clamping member 20 is arranged at a fixed point on the mounting frame as described above.

[0076] In this embodiment, a gap may be formed between two adjacent clamping members 20 , thereby facilitating the product 200 to be directly placed between the two adjacent clamping members 20 . The clamping members 20 are arranged at fixed points, so that the use process of the restraint device 100 can be as follows: the product 200 is directly placed between the clamping members 20 of the restraint device 100; then the restraint device 100 loaded with the product 200 is sent into a high-temperature furnace or a high-temperature factory environment. Since the ambient temperature is higher than the melting point of the phase change material 211 in the clamping members 20, the phase change material 211 can absorb heat and melt, and expand in volume to squeeze the clamping members 20 to make them bulge, so that the clamping members 20 can automatically clamp and heat the product 200; then, after the phase change material 211 is completely melted, the restraint device 100 can be taken out of the high-temperature environment, and at this time, the phase change material 211 can still continue to heat the product 200 until the phase change material 211 solidifies; and when the phase change material 211 solidifies, its volume can shrink and recover, thereby automatically releasing the clamping restraint of the clamping member 20 on the product 200. In this way, during the process, since the clamping member 20 can automatically clamp and heat the product 200 and automatically release the clamping restraint, multiple functions can be achieved through one structure of the clamping member 20, which is conducive to simplifying the structural setting of the restraint device 100.

[0077] Please refer to Figures 1 to 4 In one embodiment of the present application, one of the clamping member 20 and the carrier frame 10 is provided with an inserting protrusion 253, and the other one is provided with an inserting groove 133, and the inserting protrusion 253 is inserted into the inserting groove 133.

[0078] The plug-in protrusion 253 can be a plate structure, a column structure or a block structure, etc., and the present application does not limit the structural type and shape of the plug-in protrusion 253. The plug-in groove 133 can be adapted to the shape of the plug-in protrusion 253. Among them, the plug-in protrusion 253 can be set on the clamp 20, and the plug-in groove 133 can be set on the carrier 10. Of course, the plug-in protrusion 253 can also be set on the carrier 10, and the plug-in groove 133 can be set on the clamp 20. In addition, when the plug-in protrusion 253 or the plug-in groove 133 is set on the clamp 20, it can be the front and rear surfaces or the lower surface of the connection surface 25 in the clamp 20 as described above. Moreover, the plug-in protrusion 253 can also be set as an integral structure with the clamp 20 to improve the connection strength between the two. Of course, the plug-in protrusion 253 and the clamp 20 can also be set as a split structure, and then assembled by any connection method such as bonding connection or snap connection.

[0079] In this embodiment, the clamping member 20 and the carrier 10 are plug-connected through the plug-in protrusion 253 and the plug-in groove 133, which can make the installation process of the clamping member 20 relatively simple, thereby facilitating the installation of the clamping member 20. At the same time, the connection structure between the clamping member 20 and the carrier 10 is relatively simple, thereby facilitating the manufacturing convenience of the restraint device 100. In addition, the plug-in connection method also facilitates the disassembly, maintenance or replacement of the clamping member 20.

[0080] 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 openings, one of which is connected to the base 11, and the other is enclosed to form a mounting opening 131; the arrangement direction of the base 11 and the mounting opening 131 is defined as a second direction, and the second direction intersects with the first direction; the frame 13 is provided with an insertion protrusion 253 or an insertion groove 133, and the insertion groove 133 is extended along the second direction.

[0081] The bottom bracket 11 may correspond to the lower surface of the connection surface 25 in the clamping member 20 as described above, so as to support the product 200. The frame 13 may be arranged around the bottom bracket 11 and form a mounting opening 131 at the upper end. When the first direction is the left-right direction as described above, the second direction may be the up-down direction.

[0082] In this embodiment, the carrier 10 is configured to include a base 11 and a frame 13, so that the base 11 can support the product 200, thereby improving the stability of the product 200 when installed on the restraint device 100. The frame 13 can be provided with an exposed insertion protrusion 253 or an insertion groove 133 to facilitate the alignment and insertion of the clamping member 20.

[0083] Please refer to Figures 2 to 4 In one embodiment of the present application, in a third direction intersecting the first direction and the second direction, one of the plug-in protrusions 253 and the plug-in grooves 133 is provided on both sides of the clamping member 20, and the other of the plug-in protrusions 253 and the plug-in grooves 133 is provided on both sides of the frame body 13.

[0084] The third direction may be a front-to-back direction.

[0085] In this embodiment, plug-in protrusions 253 and plug-in grooves 133 are provided on the front and rear sides of the clamping member 20 and the frame 13, so that the clamping member 20 can be inserted and limited on both the front and rear sides, which is beneficial to improve the stability of the clamping member 20 installed on the carrier 10.

[0086] The above description describes that the clamping member 20 is arranged at a fixed point on the carrier 10. Figure 6In one embodiment of the present application, the clamping member 20 may also be arranged to be slidably arranged on the carrier 10 along the first direction. At this time, the restraint device 100 may also include a driving mechanism 50; the driving mechanism 50 is transmission-connected to at least one of the two clamping members 20 located at the end, and the driving mechanism 50 is configured to drive at least two clamping members 20 to slide.

[0087] The slidable setting of the clamping member 20 can be installed by slidingly matching the slide groove 135 and the slider 61 as described below. Of course, a guide rod can also be provided on the carrier 10, and a guide hole for the guide rod to pass through can be provided on the clamping member 20, and the guide hole and the guide rod can be installed by sliding. The present application does not limit the sliding installation method of the clamping member 20 on the carrier 10. The driving mechanism 50 can be used to provide power to drive the clamping member 20 to slide. Among them, when the first direction is the left and right direction as described above, the driving mechanism 50 can be connected to at least one of the leftmost and rightmost ends. Among them, the driving mechanism 50 can include a driving screw 51 as described below, and of course it can also include a cylinder. When the driving mechanism 50 simultaneously drives the two clamping members 20 at the leftmost and rightmost ends to approach or move away from each other, the driving mechanism 50 can include two driving screws 51 or two cylinders to drive the two clamping members 20 at the leftmost and rightmost ends respectively. Of course, the driving mechanism 50 may also include a bidirectional screw rod, so as to simultaneously drive the two leftmost and rightmost clamping members 20 to move closer to and away from each other through a bidirectional screw rod. Alternatively, the driving mechanism 50 may also include a gear and a rack meshed with opposite sides of the gear, so as to connect and drive the two leftmost and rightmost clamping members 20 through the two racks.

[0088] In this embodiment, the clamping member 20 is configured to slide along a first direction and is provided with a driving mechanism 50 so that the distance between two adjacent clamping members 20 can be adjusted, thereby facilitating the control of the degree of clamping of the product 200. Among them, when the clamping member 20 is slidably arranged, the use process of the restraint device 100 can be: remove the clamping member 20 from the carrier 10, and put it into the heating equipment to heat it to above the melting point temperature of the phase change material 211 in the clamping member 20, so that the phase change material 211 can absorb heat and melt and expand in volume to squeeze the clamping member 20 to make it protrude; then install the clamping member 20 on the carrier 10, and install the product 200 between the clamping members 20; then drive the clamping member 20 to slide through the driving mechanism 50, so that the clamping member 20 is close to clamp the product 200, and heat the product 200; and within the preset pressurization and heating time, the ambient temperature can be maintained above the melting point temperature of the phase change material 211; then after the pressurization is completed, the phase change material 211 is cooled and solidified to automatically release the clamping restraint of the product 200.

[0089] Please refer to Figure 6 and Figure 7 In one embodiment of the present application, the clamping member 20 is detachably mounted on the supporting frame 10 .

[0090] The detachable manner of the clamping member 20 can be connected to the bearing frame 10 indirectly and detachably by screws as described below and by a slider 61 slidably mounted on the bearing frame 10. Of course, a detachable connecting plate can also be provided on the bearing frame 10, and the clamping member 20 can be clamped and installed by the connecting plate and the bearing frame 10. Alternatively, the bearing frame 10 is provided with a guide rod as described above, and the clamping member 20 is clamped and sleeved on the guide rod by two detachable half rings or two elastic arms. The present application does not limit the detachable manner of the clamping member 20, and it is sufficient to ensure that the clamping member 20 can be both slidable and detachable on the bearing frame 10.

[0091] In this embodiment, the clamping member 20 is configured to be detachable, so that the clamping member 20 can be removed separately for heating, and the phase change material 211 in the clamping member 20 is heated to above the melting point before being installed on the carrier 10. At this time, the heating efficiency of the clamping member 20 can be improved, and the clamping member 20 can also be adaptively replaced according to the size of the product 200.

[0092] Please refer to Figure 6 and Figure 7 In one embodiment of the present application, the carrier frame 10 is provided with a slide groove 135, and the slide groove 135 is extended along the first direction; the restraint device 100 also includes a guide mechanism 60, and the guide mechanism 60 includes at least two sliders 61, and at least two sliders 61 can be slidably disposed in the slide groove 135, and each clamping member 20 is detachably connected to a slider 61.

[0093] The cross section of the slide groove 135 can be square, T-shaped, or dovetail-shaped, etc., and the present application does not limit the cross-sectional shape of the slide groove 135. Among them, when the carrier 10 includes the base 11 and the frame 13 as described above, the slide groove 135 can be set on the frame 13. The slider 61 can be partially slidably installed in the slide groove 135, and the shape of the part located in the slide groove 135 can be adapted to the cross-sectional shape of the slide groove 135, and the clamping member 20 can be connected to the part located outside the slide groove 135. Among them, the clamping member 20 and the slider 61 can be magnetically connected, snap-fit ​​connected, or screwed connected.

[0094] In this embodiment, the stability and accuracy of the sliding of the clamping member 20 can be improved through the cooperation of the slide groove 135 and the slider 61. At the same time, the sliding connection of the clamping member 20 can be achieved through the cooperation of the slider 61 and the slide groove 135, and the detachable connection can be achieved through the cooperation of the clamping member 20 and the slider 61, so that the sliding connection and the detachable connection are respectively set on different parts, thereby improving the convenience of the slidable and detachable setting of the clamping member 20.

[0095] Please refer to Figure 6 and Figure 7 In one embodiment of the present application, a connecting ear 255 is provided at a position of the clamping member 20 corresponding to the slider 61 , and the connecting ear 255 and the slider 61 are connected by a locking screw 70 .

[0096] The connecting ear 255 can be provided on at least one of the front and rear surfaces of the connecting surface 25 in the clamping member 20 as described above. Moreover, the connecting ear 255 can also be an integral structure with the clamping member 20 to improve the connection strength between the two. Of course, the connecting ear 255 and the clamping member 20 can also be provided in a separate structure, and then assembled by any connection method such as bonding connection or snap connection.

[0097] In this embodiment, the connection ear 255 can provide a connection position so as to be aligned with the slider 61. Furthermore, by penetrating the locking screw 70 for connection, the convenience of disassembling and assembling the clamping member 20 on the carrier 10 can be further improved.

[0098] Please refer to Figure 6 and Figure 7 In one embodiment of the present application, the number of the slide grooves 135 is at least two, and the at least two slide grooves 135 are respectively located on both sides of the third direction where the frame 13 intersects the first direction and the second direction; the number of the guide mechanisms 60 is at least two, and each guide mechanism 60 is set corresponding to a slide groove 135.

[0099] In this embodiment, slide grooves 135 are provided on both sides of the frame 13 of the carrier 10 in the third direction, or in other words, on the front and rear sides of the frame 13, so that the clamping member 20 can be slidably and detachably connected on the front and rear sides, which is beneficial to improve the sliding stability and connection stability of the clamping member 20 on the carrier 10.

[0100] Please refer to Figure 6In one embodiment of the present application, the driving mechanism 50 includes a driving screw 51 and a force plate 53. The driving screw 51 extends along a first direction, passes through the carrier frame 10, and is threadedly connected to the carrier frame 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 located at the end are arranged opposite to each other, and the force plate 53 is configured to abut and drive the clamping member 20 located at the end.

[0101] The driving screw 51 is threadedly connected to the frame 13 in the carrier 10, so that it can move closer to the clamping member 20 and away from the clamping member 20 along the first direction during the rotation process. Among them, 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 and / or far right. Among them, the driving screw 51 can be installed on the force plate 53 through a bearing. Of course, one end of the driving screw 51 is not provided with a threaded end, and the end is inserted into the rotation hole on the force plate 53.

[0102] In this embodiment, 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, thereby stably driving the clamping member 20 to the required position, so that the clamping member 20 can subsequently clamp the product 200 accurately and stably. 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 end of the clamping member 20 to improve the stability of the driving of the clamping member 20 and avoid the possibility of damage to the clamping member 20 due to excessive local stress.

[0103] Please refer to Figures 1 to 4In one embodiment of the present application, the restraint device 100 includes a carrier 10 and at least two clamping members 20; at least two clamping members 20 are both arranged on the carrier 10 and arranged side by side in sequence along the first direction, and the clamping member 20 is provided with a receiving chamber 21, and a phase change material 211 is provided in the receiving chamber 21. The clamping member 20 is provided with a perfusion hole 251, and the perfusion hole 251 is connected to the receiving chamber 21; the restraint device 100 also includes a blocking member 30, which is connected to the clamping member 20 and is configured to block the connection between the perfusion hole 251 and the outside. The blocking member 30 is a sealing plug 31, and the sealing plug 31 is inserted into the perfusion hole 251. The clamping member 20 includes two abutting surfaces 23 and a connecting surface 25, and the two abutting surfaces 23 are arranged relatively spaced in the first direction; the connecting surface 25 connects the two abutting surfaces 23, and the perfusion hole 251 is provided on the connecting surface 25. The material of the clamping member 20 is aluminum or stainless steel; the shape of the accommodating cavity 21 is the same as the shape of the clamping member 20; the material of the phase change material 211 is paraffin; when the phase change material 211 is in a liquid state, the volume of the phase change material 211 is equal to the volume of the accommodating cavity 21. At least two clamping members 20 are arranged at intervals in the first direction and are fixed relative to the support frame 10. One of the connecting surface 25 of the clamping member 20 and the support frame 10 is provided with an inserting protrusion 253, and the other one is provided with an inserting groove 133, and the inserting protrusion 253 is inserted into the inserting groove 133. The carrier 10 includes a base 11 and a frame 13; the frame 13 has two open ends, one of which is connected to the base 11, and the other of which is enclosed to form a mounting opening 131; the arrangement direction of the base 11 and the mounting opening 131 is defined as a second direction, and the second direction intersects the first direction; the frame 13 is provided with an insertion protrusion 253 or an insertion groove 133, and the insertion groove 133 is extended along the second direction. In a third direction intersecting the first direction and the second direction, one of the insertion protrusion 253 and the insertion groove 133 is provided on both sides of the clamping member 20, and the other of the insertion protrusion 253 and the insertion groove 133 is provided on both sides of the frame 13.

[0104] 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.

[0105] 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 arranged on the supporting frame and are arranged side by side in sequence along a first direction. The clamping members are provided with a containing cavity, and a phase change material is arranged in the containing cavity.

2. The restraint device according to claim 1, characterized in that The clamping member is provided with a perfusion hole, and the perfusion hole is connected to the accommodating cavity; The restraint device further comprises a blocking member, which is connected to the clamping member and is configured to block the communication between the perfusion hole and the outside.

3. The restraint device according to claim 2, characterized in that: The blocking member is a sealing plug, and the sealing plug is inserted into the injection hole.

4. The restraint device according to claim 2, characterized in that: The blocking member is a sealing cover, which is arranged on the outside of the clamping member and seals the injection hole.

5. The restraint device according to claim 4, characterized in that: The sealing cover is welded to the clamping member; Alternatively, the sealing cover is detachably connected to the clamping member, and the restraining device further comprises a sealing ring, which is sandwiched between the sealing cover and the clamping member and arranged around the injection hole.

6. The restraint device according to claim 2, characterized in that: The clamping member comprises: two abutment surfaces, the two abutment surfaces being arranged with a relative spacing in the first direction; and A connecting surface, wherein the connecting surface connects the two abutting surfaces, and the injection hole is arranged on the connecting surface.

7. The restraint device according to claim 1, characterized in that: The material of the clamping member is aluminum or stainless steel; And / or, the shape of the accommodating cavity is the same as the outer shape of the clamping member; And / or, the phase change material is made of paraffin; And / or, when the phase change material is in a liquid state, the volume of the phase change material is equal to the volume of the accommodating cavity.

8. The restraint device according to any one of claims 1 to 7, characterized in that At least two of the clamping members are spaced apart in the first direction and are fixed relative to the supporting frame.

9. The restraint device according to claim 8, characterized in that One of the clamping member and the supporting frame is provided with an inserting protrusion, and the other one is provided with an inserting groove, and the inserting protrusion is inserted into the inserting groove.

10. The restraint device according to claim 9, characterized in that The carrier frame comprises: Base; and A frame body, wherein the frame body has two open ends, one of which is connected to the base, and the other of which is enclosed and configured as a mounting opening; defining an arrangement direction of the base bracket and the mounting opening as a second direction, wherein the second direction intersects the first direction; The frame body is provided with the plugging protrusion or the plugging groove, and the plugging groove is extended along the second direction.

11. The restraint device according to claim 10, characterized in that In a third direction intersecting the first direction and the second direction, one of the plugging protrusion and the plugging groove is provided on both sides of the clamping member, and the other of the plugging protrusion and the plugging groove is provided on both sides of the frame.

12. The restraint device according to any one of claims 1 to 7, characterized in that The clamping member is slidably disposed on the carrier along the first direction, and the restraining device further comprises a driving mechanism; The driving mechanism is in driving connection with at least one of the two clamping members located at the end portions, and the driving mechanism is configured to drive at least the two clamping members to slide.

13. The restraint device according to claim 12, characterized in that The clamping member is detachably mounted on the supporting frame.

14. The restraint device according to claim 13, characterized in that The carrier frame is provided with a slide groove, and the slide groove is extended along the first direction; The restraint device also includes a guide mechanism, which includes at least two sliders. At least two sliders can be slidably disposed in the slide groove, and each of the clamping members can be detachably connected to one of the sliders.

15. The restraint device according to claim 14, characterized in that The clamping member is provided with a connecting ear at a position corresponding to the slider, and the connecting ear and the slider are connected by a locking screw; And / or, the support frame includes a base and a frame; the frame has two openings, one of which is connected to the base, and the other of which is enclosed to form a mounting opening; the arrangement direction of the base and the mounting opening is defined as a second direction, and the second direction intersects with the first direction; the number of the slide grooves is at least two, and at least two of the slide grooves are respectively located on both sides of the third direction of the frame intersecting the first direction and the second direction; the number of the guide mechanisms is at least two, and each of the guide mechanisms corresponds to one slide groove.

16. The restraint device according to claim 12, characterized in that: The driving mechanism comprises: A driving screw rod, the driving screw rod extending along the first direction, the driving screw rod passing through the supporting frame and being threadedly connected to the supporting frame; and A force plate is connected to one end of the driving screw and can be driven by the rotating driving screw to slide along a first direction. The force plate and the clamping member located at the end are arranged opposite to each other, and the force plate is configured to abut and drive the clamping member located at the end.

17. A battery production device, characterized in that: Comprising a restraint device as claimed in any one of claims 1 to 16.

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