Battery drying fixture, device, system and battery production line

Abstract

The present application discloses a battery drying fixture, device, system and battery production line, relating to the technical field of batteries. The battery drying fixture can uniformly heat all the batteries carried in the battery drying fixture. The battery drying fixture includes: a substrate, a limiting structural member, a heating member and a heating circuit. Among them, the substrate is made of a heat-conducting material; the limiting structural member is arranged on the substrate, and the limiting structural member is formed with a plurality of cell profiling holes for accommodating and limiting a single cell; the heating member is arranged on the side of the substrate opposite to the limiting structural member, and the heating member includes an internal heat zone and a surrounding heat zone. The internal heat zone corresponds to the cell profiling holes near the center of the substrate, and the surrounding heat zone corresponds to the cell profiling holes near the edge of the substrate. The heating powers of the internal heat zone and the surrounding heat zone are different; the internal heat zone and the surrounding heat zone are respectively electrically connected to a heating circuit, and the heating circuit is used to be electrically connected to a power supply to apply electric energy to the internal heat zone and the surrounding heat zone respectively.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery drying fixture, device, system and battery production line. Background Art

[0002] During the production of batteries, some components in the batteries contain moisture, and the batteries need to be dried to reduce or even eliminate the moisture in the batteries. For example, after the electrode assembly in the battery is installed in the housing, the electrode assembly needs to be dried. In the related art, during the drying process of the batteries, multiple batteries are often dried simultaneously, but the drying rates of the batteries at different positions are different, thus affecting the drying effect of the batteries. Summary of the Invention

[0003] This application provides a battery drying fixture, device, system and battery production line, which can achieve uniform heating of all the batteries carried in the battery drying fixture.

[0004] In a first aspect of this application, a battery drying fixture is provided. The battery drying fixture includes: a substrate, a limiting structural member, a heating member and a heating circuit. Among them, the substrate is made of a heat-conducting material; the limiting structural member is arranged on the substrate, and the limiting structural member is formed with a plurality of cell profiling holes for accommodating and limiting a single cell; the heating member is arranged on the side of the substrate opposite to the limiting structural member, and the heating member includes an internal heat zone and a surrounding heat zone. The internal heat zone corresponds to the cell profiling holes near the center of the substrate, and the surrounding heat zone corresponds to the cell profiling holes near the edge of the substrate. The heating powers of the internal heat zone and the surrounding heat zone are different; the internal heat zone and the surrounding heat zone are respectively electrically connected to a heating circuit, and the heating circuit is used to be electrically connected to a power supply to respectively apply electric energy to the internal heat zone and the surrounding heat zone.

[0005] The battery drying fixture provided by the present application can transfer heat at a relatively fast speed by using the substrate since the substrate is made of a heat-conducting material. And a limiting structural member with a plurality of cell profiling holes is arranged on the substrate, so that the cells can be accommodated in the battery drying fixture through the cell profiling holes. Moreover, a heating member is arranged on the substrate, and the heating member can provide heat to the substrate and the limiting structural member to facilitate heating the cells in the cell profiling holes. At the same time, the heating member is set to include two structures, an internal heat zone and a surrounding heat zone, which can independently control the heating power. According to the amount of heat required in different regions of the battery drying fixture, the internal heat zone and the surrounding heat zone can be controlled respectively, so that the central region and the peripheral edge region of the battery drying fixture can receive the same or nearly the same amount of heat, and thus the cells in the cell profiling holes at different positions in the battery drying fixture can receive the same or nearly the same amount of heat, thereby realizing uniform heating of all the cells carried in the battery drying fixture and enabling all the cells in the battery drying fixture to have the same or nearly the same drying rate.

[0006] In a possible implementation manner of the present application, the surrounding heat zone is arranged to surround the internal heat zone.

[0007] In the technical solution of the present application, since the surrounding heat zone is arranged in a structure that surrounds the internal heat zone for one week, less heat can be provided to the central region of the substrate through the internal heat zone, while more heat can be provided to the four peripheral edges of the substrate through the surrounding heat zone. Compared with the case where the heating member is set as a whole structure and the temperature of the central region of the substrate is higher than that of the edge region due to heat accumulation when heating the substrate, in the embodiment of the present application, less heat can be provided to the central region of the substrate through the internal heat zone, so that the heat received by each region on the substrate is nearly the same.

[0008] In a possible implementation manner of the present application, the internal heat zone includes at least two sub-heat zones, the at least two sub-heat zones are adjacent to each other in sequence, and the sub-heat zone far from the center of the substrate surrounds the sub-heat zone close to the center of the substrate.

[0009] In the technical solution of the present application, since the internal heat zone includes at least two sub-heat zones, the heat provided to the annular region corresponding to each sub-heat zone on the substrate can be independently controlled, so that the heat of each annular region on the substrate can be accurately controlled, which is beneficial to reducing the situation that the temperature of the region closer to the center of the substrate on the substrate is higher than that of other regions on the substrate.

[0010] In a possible implementation manner of the present application, the internal heat zone includes a first sub-heat zone and a second sub-heat zone, the first sub-heat zone is close to the center of the substrate, and the second sub-heat zone surrounds the first sub-heat zone.

[0011] In the technical solution of the present application, since the internal heat zone includes a first sub-heat zone and a second sub-heat zone, the heating amounts of the regions on the substrate corresponding to the first sub-heat zone and the second sub-heat zone can be independently controlled, which is beneficial to reducing the situation where the temperature of the region on the substrate corresponding to the first sub-heat zone is higher or lower than the temperature of the region corresponding to the second sub-heat zone.

[0012] In a possible implementation manner of the present application, the sub-heat zone near the center of the substrate includes at least two internal sub-heat zones, and the at least two internal sub-heat zones are distributed in a rectangular array.

[0013] In the technical solution of the present application, since the sub-heat zone near the center of the substrate is set as at least two internal sub-heat zones distributed in a rectangular array, the region near the center of the substrate can be divided into more heating regions with smaller areas. Thus, by independently controlling the heating power of each internal sub-heat zone, the temperature of the region near the center of the substrate can be made consistent or substantially consistent with the temperature of the edge of the substrate.

[0014] In a possible implementation manner of the present application, the internal heat zone includes at least four internal sub-heat zones, and the at least four internal sub-heat zones are distributed in a rectangular array.

[0015] In the technical solution of the present application, since the internal heat zone includes at least four internal sub-heat zones and the at least four internal sub-heat zones are distributed in a rectangular array, the heat received by the region on the substrate corresponding to the internal heat zone can be more precisely controlled. Thus, the heat received by different regions in the region on the substrate corresponding to the internal heat zone can be made consistent or close to consistent with the heat required by the battery cells.

[0016] In a possible implementation manner of the present application, the heating power of the internal heat zone is less than the heating power of the surrounding heat zone.

[0017] In the technical solution of the present application, since the heating power of the internal heat zone of the heating element is less than the heating power of the surrounding heat zone, the heat received by the central region of the substrate can be made less than the heat received by the edge region of the substrate. And because the heat of the edge region of the substrate dissipates faster than the heat of the central region of the substrate, the temperature of the central region and the edge region on the substrate can be made substantially the same. Furthermore, the temperatures of the battery cells at different positions in the battery drying fixture can be made substantially the same.

[0018] In a possible implementation manner of the present application, the limiting structure member includes a guiding block and a profiling block. The profiling block is disposed on the substrate, and the guiding block is located on the side of the profiling block away from the substrate; the battery cell profiling hole includes a guiding section and a limiting section. The limiting section is disposed on the profiling block, the guiding section is disposed on the guiding block, and the diameter of at least part of the guiding section is greater than the diameter of the limiting section.

[0019] In the technical solution of the present application, since the cell profiling hole includes a guiding section and a limiting section, during the process of placing the cell into the cell profiling hole, the diameter of the guiding section is larger than that of the limiting section, that is, the diameter of the guiding section is larger than the diameter of the cell, so that the cell can enter the cell profiling hole more easily, which is beneficial to reducing the requirement for the motion accuracy of the equipment or device for handling the cell.

[0020] In a possible implementation manner of the present application, the battery drying fixture further includes a flexible protection member, the flexible protection member is attached to the inside of the cell profiling hole, and the hardness of the flexible protection member is less than that of the cell.

[0021] In the technical solution of the present application, since a flexible protection member is provided inside the cell profiling hole, during the process of placing the cell into the cell profiling hole or taking the cell out of the cell profiling hole, the cell can contact the flexible protection member and move relative to the flexible protection member. Because the hardness of the flexible protection member is less than that of the cell, it is beneficial to reduce the risk of the battery drying fixture scratching the cell.

[0022] In a possible implementation manner of the present application, the battery drying fixture further includes a reflecting member, the reflecting member surrounds the limiting structural member for one week, and along the stacking direction of the limiting structural member and the substrate, the height of the reflecting member is greater than or equal to the height of the limiting structural member.

[0023] In the technical solution of the present application, since a reflecting member is arranged around the limiting structural member, the heat radiated by the limiting structural member can be reflected to the limiting structural member by the reflecting member, which is beneficial to slowing down the speed of heat dissipation of the battery drying fixture to the surrounding environment and is beneficial to improving the energy utilization rate.

[0024] In a possible implementation manner of the present application, the battery drying fixture further includes a first moving component, the first moving component is arranged on the substrate, the first moving component is matched with the moving fixture, and the battery drying fixture can move on the moving fixture through the first moving component.

[0025] In the technical solution of the present application, since the first moving component is arranged on the substrate, it is convenient for the battery drying fixture to move relative to the moving fixture through the first moving component, which is beneficial to reducing the wear of the battery drying fixture when moving relative to the moving fixture.

[0026] In a possible implementation manner of the present application, the battery drying fixture further includes a first locking component, the first locking component is arranged on the substrate, and when the battery drying fixture is placed on the moving fixture, the first locking component can move relative to the substrate and abut against the moving fixture to limit the movement of the battery drying fixture relative to the moving fixture.

[0027] In the technical solution of the present application, since a first locking component is provided on the battery drying fixture, the first locking component can be used to restrict the movement of the battery drying fixture relative to the moving fixture. Thus, after the battery drying fixture moves to the in-place position on the moving fixture, the battery drying fixture can be fixed relative to the moving fixture, so as to facilitate accurately placing the battery cell into the battery cell profiling hole or taking out the battery from the battery cell profiling hole.

[0028] The second aspect of the present application provides a battery drying device, which includes a moving fixture and the battery drying fixture provided in any one of the above first aspects. Among them, the moving fixture includes a carrier and at least two carrying mechanisms, and the at least two carrying mechanisms are stacked on the carrier at intervals; the battery drying fixture is movably carried on the carrying mechanism.

[0029] For the battery drying device provided by the present application, since it includes the battery drying fixture provided above, it can achieve uniform heating of all battery cells carried in the battery drying fixture, so that all battery cells in the battery drying fixture have the same or nearly the same drying rate. And it is convenient to move the battery drying fixture to the working station for drying the battery cells through the moving fixture.

[0030] In a possible implementation manner of the present application, the carrying mechanism includes a first guiding component, and the battery drying fixture includes a first moving component matching the first guiding component. The battery drying fixture moves on the first guiding component through the first moving component to enter or exit the moving fixture.

[0031] In the technical solution of the present application, since a first guiding component matching the first moving component in the battery drying fixture is provided in the carrying mechanism, the battery drying fixture can move relative to the moving fixture on the carrying mechanism through the first moving component and the first guiding component, so as to facilitate the battery drying fixture to enter the moving fixture or exit the moving fixture.

[0032] In a possible implementation manner of the present application, the battery drying device further includes a first locking component and a first positioning member matching the first locking component. The first locking component is provided on one of the substrate and the carrier, and the first positioning member is provided on the other of the substrate and the carrier. The first locking component cooperates with the first positioning member to restrict the movement of the battery drying fixture relative to the carrier.

[0033] In the technical solution of the present application, since a first locking component and a first positioning member are respectively arranged on the substrate and the carrier, after the battery drying fixture moves into place on the moving fixture, the first locking component can be controlled to abut against the first positioning member, so that the battery drying fixture can be fixed on the moving fixture through the first locking component and the first positioning member, thereby reducing the occurrence of unnecessary movement of the battery drying fixture relative to the moving fixture.

[0034] In a possible implementation manner of the present application, the battery drying device further includes a detection member and a trigger member. The detection member is arranged on one of the substrate and the carrier, and the trigger member is arranged on the other of the substrate and the carrier; when the battery drying fixture moves relative to the carrier until the detection member abuts against the trigger member, the detection member can generate a control signal to control the movement of the first locking component.

[0035] In the technical solution of the present application, since a matching detection member and trigger member are respectively arranged on the substrate and the carrier, when the battery drying fixture moves into place on the moving fixture, a control signal can be generated in time by the detection member, so as to obtain the information that the battery drying fixture moves into place on the moving fixture in time.

[0036] The third aspect of the present application provides a battery drying system, which includes a disassembly and assembly tray device and the battery drying device provided in the second aspect above. Among them, the disassembly and assembly tray device includes an adjacent disassembly and assembly tooling and a parking tooling; the parking tooling is matched with the moving fixture so that the moving fixture can be movably carried on the parking tooling; the disassembly and assembly tooling includes at least two extraction mechanisms stacked at intervals on the disassembly and assembly tray rack, and the battery drying fixture can be movably carried on the extraction mechanism; the disassembly and assembly tooling can move the battery drying fixture located on the extraction mechanism to the carrying mechanism, or move the battery drying fixture located on the carrying mechanism to the extraction mechanism.

[0037] In the battery drying system provided by the present application, since it includes the battery drying fixture provided above, it can realize uniform heating of all the battery cells carried in the battery drying fixture, so that all the battery cells in the battery drying fixture have the same or nearly the same drying rate. And an adjacent disassembly and assembly tooling and a parking tooling are arranged in the disassembly and assembly tray device, which is convenient for completing the assembly or disassembly of multiple battery drying fixtures on the moving fixture.

[0038] In a possible implementation of the present application, the layer extraction mechanism includes a second guiding component, which corresponds to the first guiding component and matches the first moving component of the battery drying fixture; the disassembly and assembly tooling further includes a second locking component arranged on the disassembly and assembly disc rack, and the battery drying fixture further has a second positioning member that matches the second locking component. When the battery drying fixture moves from the first guiding component to the second guiding component through the first moving component, the second locking component cooperates with the second positioning member to restrict the movement of the battery drying fixture relative to the disassembly and assembly tooling.

[0039] In the technical solution of the present application, since the layer extraction mechanism and the moving fixture respectively include corresponding second guiding components and first guiding components, it is convenient for the battery drying fixture to move along the first guiding component and the second guiding component through the first moving component, so as to realize the movement of the battery drying fixture between the disassembly and assembly tooling and the moving fixture. And the movement of the battery drying fixture relative to the disassembly and assembly tooling can be restricted through the cooperation of the second locking component and the second positioning member.

[0040] In a possible implementation of the present application, the disassembly and assembly tooling further includes a pushing and pulling mechanism, which is slidably arranged on the disassembly and assembly disc rack and corresponds to the layer extraction mechanism. The pushing and pulling mechanism can be locked or unlocked with the battery drying fixture, and is used to drive the battery drying fixture to move between the bearing mechanism and the layer extraction mechanism.

[0041] In the technical solution of the present application, since a pushing and pulling mechanism is arranged in the disassembly and assembly tooling, the battery drying fixture can be driven to move between the disassembly and assembly tooling and the moving fixture through the pushing and pulling mechanism, so that the assembly or disassembly of the battery drying fixture in the moving fixture can be quickly realized.

[0042] In a possible implementation of the present application, the parking tooling includes a third guiding component, which extends along the arrangement direction of the parking tooling and the disassembly and assembly tooling; the moving fixture includes a second moving component that matches the third guiding component, and the moving fixture moves in a direction away from or close to the disassembly and assembly tooling through the second moving component and the third guiding component.

[0043] In the technical solution of the present application, since a third guiding component is arranged at the parking station and a second moving component that matches the third guiding component is arranged on the moving fixture, it is convenient to move the moving fixture to the parking tooling through the third guiding component and the second moving component, or to move the moving fixture from the parking tooling to other stations.

[0044] The fourth aspect of the present application further provides a battery production line, which includes a transfer system, a handling system, and the battery drying system provided in the third aspect above. Among them, the transfer system is disposed adjacent to the disassembly and assembly tray device for transporting battery cells; the handling system is arranged between the transfer system and the disassembly and assembly tray device for transporting the battery cells located on the transfer system into the cell profiling holes of the battery drying fixture, or transporting the battery cells located in the cell profiling holes to the transfer system.

[0045] Since the battery production line provided by the present application includes the battery drying fixture provided above, it is possible to uniformly heat all the battery cells carried in the battery drying fixture, so that all the battery cells in the battery drying fixture have the same or nearly the same drying rate. And a handling system is provided between the transfer system and the battery drying system, which can realize the rapid transfer of the battery cells between the transfer system and the battery drying system. Description of the Drawings

[0046] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0047] Figure 1 is a schematic structural diagram of the battery drying fixture provided by the present application;

[0048] Figure 2 is an exploded schematic diagram of the battery processing tooling provided by the present application;

[0049] Figure 3 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 1 ;

[0050] Figure 4 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 2 ;

[0051] Figure 5 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 3 ;

[0052] Figure 6 is a schematic structural diagram of the profiling block in the battery drying fixture provided by the present application;

[0053] Figure 7 is a schematic cross-sectional structural diagram of the guiding block in the battery drying fixture provided by the present application;

[0054] Figure 8 is a schematic structural diagram of the guiding block in the battery drying fixture provided by the present application;

[0055] Figure 9 Schematic structural diagram of the battery drying device provided for this application;

[0056] Figure 10 Provided for this application Figure 9 Partial enlarged schematic diagram of part A in

[0057] Figure 11 Provided for this application Figure 9 Partial enlarged schematic diagram of part B in

[0058] Figure 12 Schematic structure of the battery drying system provided for this application Figure 1 ;

[0059] Figure 13 Schematic structure of the battery drying system provided for this application Figure 2 ;

[0060] Figure 14 Provided for this application Figure 13 Partial enlarged schematic diagram of part C in

[0061] Figure 15 Provided for this application Figure 13 Partial enlarged schematic diagram of part D in

[0062] Figure 16 Provided for this application Figure 12 Partial enlarged schematic diagram of part E in

[0063] Explanation of reference numerals:

[0064] 1 - Battery drying fixture; 11 - Substrate; 12 - Heating element; 121 - Internal heating zone; 1211 - First sub - heating zone; 1212 - Second sub - heating zone; 1213 - Internal sub - heating zone; 122 - Surrounding heating zone; 13 - Limiting structure member; 131 - Core profiling hole; 1311 - Guide section; 1312 - Limiting section; 132 - Guide block; 133 - Profiling block; 14 - Flexible protective part; 15 - Reflective part; 16 - Connector; 17 - First moving component; 171 - First guide wheel; 18 - First locking component; 181 - First driving part; 182 - First locking accessory; 183 - Second positioning part; 184 - Third positioning part; 191 - Pressing part; 192 - Wire groove; 2 - Moving fixture; 21 - Carrying frame; 22 - Carrying mechanism; 221 - First guiding component; 2211 - Guide rail; 2212 - Auxiliary part; 23 - First positioning part; 24 - Detection part; 25 - Trigger part; 26 - Second moving component; 261 - Second guide wheel; 262 - Second carrying wheel; 3 - Disassembly and assembly tooling; 31 - Laminating removal mechanism; 32 - Second locking component; 321 - Second carrier plate; 322 - Second driving part; 323 - Second locking accessory; 33 - Buffer component; 34 - Pushing and pulling mechanism; 341 - Pushing and pulling bracket; 342 - Third locking component; 3421 - Third locking accessory; 3422 - Unlocking part; 3423 - Third driving part; 3424 - Third sliding component; 3425 - Third carrier plate; 343 - Pushing and pulling driving part; 4 - Parking tooling; 41 - Third guiding component; 5 - Disassembly and assembly tray rack; X - First direction; Y - Second direction; Z - Stacking direction. Detailed implementation manners

[0065] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification and the above - mentioned drawings of this application are intended to cover non - exclusive inclusion.

[0067] In the description of the embodiments of the present application, technical terms such as "first", "second", "third", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary - secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality" means more than two unless otherwise specifically defined.

[0068] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0069] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0070] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0071] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it 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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0072] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0073] At present, new energy batteries are increasingly used in life and industry. New energy batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0074] During the production of the battery, some components contain moisture. For example, during the production of the electrode assembly, the electrode assembly contains moisture, and then it is necessary to dry the electrode assembly in the subsequent production process to improve the production efficiency of the battery.

[0075] The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator is disposed between the negative electrode and the positive electrode. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through. The positive electrode can be a positive electrode sheet, and the positive electrode sheet can include a positive current collector and a positive active material provided on at least one surface of the positive current collector. The positive active material can include at least one of the following materials: lithium-containing phosphate, lithium transition metal oxide, and their respective modified compounds. The negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative current collector and a negative active material provided on at least one surface of the negative current collector. The negative active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based material, tin-based material, and lithium titanate, etc. Some of the positive active material and the negative active material are in a slurry state, and the slurry-like active material containing moisture is coated on the current collector to obtain the electrode sheet.

[0076] After the electrode assembly is placed into the battery housing and before the battery is filled with liquid or infiltrated, it is necessary to make the dryness degree of the electrode assembly located in the battery housing meet the requirements. Then it is necessary to dry the battery. For example, for cylindrical batteries, square shell batteries, etc., multiple batteries can be placed in an oven and the batteries are heated to quickly evaporate the moisture in the batteries. In the related art, when drying multiple batteries simultaneously using a drying device, the heat received by the batteries at different positions in the drying device is often different, that is, uniform heating of multiple batteries cannot be achieved, which affects the drying effect of the batteries.

[0077] The embodiment of the present application provides a battery drying fixture, which can uniformly heat multiple battery cells located in the battery drying fixture. Refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 is a schematic structural diagram of the battery drying fixture provided by the present application, Figure 2 is an exploded schematic diagram of the battery drying fixture provided by the present application, Figure 3 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 1The battery drying fixture 1 includes: a substrate 11, a limiting structural member 13, a heating member 12, and a heating circuit (not shown in the figure). Among them, the substrate 11 is made of a heat-conducting material; the limiting structural member 13 is disposed on the substrate 11, and the limiting structural member 13 is formed with a plurality of cell profiling holes 131 for accommodating and limiting a single cell; the heating member 12 is disposed on the side of the substrate 11 opposite to the limiting structural member 13, and the heating member 12 includes an internal heat zone 121 and a surrounding heat zone 122. The internal heat zone 121 corresponds to the cell profiling holes 131 near the center of the substrate 11, and the surrounding heat zone 122 corresponds to the cell profiling holes 131 near the edge of the substrate 11; the internal heat zone and the surrounding heat zone are respectively electrically connected to a heating circuit, and the heating circuit is used to be electrically connected to a power supply to apply electric energy to the internal heat zone and the surrounding heat zone respectively.

[0078] In the embodiment of the present application, as Figure 1 and Figure 2 shown, the substrate 11 is used to set and carry other parts in the battery drying fixture 1 and is used to conduct heat. For example, the substrate 11 can be made of metal materials such as aluminum, aluminum alloy, copper, and copper alloy with good heat-conducting performance. The substrate 11 can be set as a flat plate structure.

[0079] In the embodiment of the present application, the limiting structural member 13 is used to limit and accommodate the battery to be dried or the components in the battery. For example, the limiting structural member 13 can be set according to the structure of the cells in the battery to heat multiple cells by using the battery drying fixture 1 so that the cells can be dried at a faster speed.

[0080] Exemplarily, a plurality of cell profiling holes 131 matching the shape of the cells can be provided on the limiting structural member 13. For example, when the cell is a cylindrical cell, the cell profiling hole 131 can be set as a cylindrical hole, and when the cell is a square cell, the cell profiling hole 131 can be set as a cubic hole. The limiting structural member 13 can be attached to one side surface of the substrate 11 and fixed to the substrate 11. Then, a single cell can be inserted into a cell profiling hole 131 so that one end of the cell abuts against the substrate 11 to realize the limitation of the cell.

[0081] In the embodiment of the present application, the heating member 12 is used to provide heat to the substrate 11 and the limiting structural member 13 to heat the cells accommodated in the cell profiling holes 131. For example, the heating member 12 can be attached and disposed on the surface of the substrate 11 opposite to the limiting structural member 13, that is, the heating member 12 is located on the side surface of the substrate 11 far from the limiting structural member 13. The heating member 12 can adopt devices such as graphene electric heating film, polyimide electric heating film, and silicone electric heating film that can utilize electric energy for heating.

[0082] Exemplarily, as Figure 3As shown, the heating element 12 can be configured to have a structure with at least two heating zones. For example, the heating element 12 is configured to have a structure with two independently controllable heating temperatures, that is, the inner heating zone 121 of the heating element 12 independently heats the central region of the substrate 11, and the surrounding heating zone 122 of the heating element 12 heats the peripheral edge region of the substrate 11. Different heating devices can be used for the inner heating zone 121 and the surrounding heating zone 122 of the heating element 12, or the same heating device can be used, but the heating devices are arranged at different densities in the inner heating zone 121 and the surrounding heating zone 122. For example, when the heating element 12 includes multiple heating wires, the density of the heating wires in the inner heating zone 121 can be made less than the density of the heating wires in the surrounding heating zone 122. Then, the inner heating zone 121 and the surrounding heating zone 122 can have different heat generation powers, that is, the heat generated by the inner heating zone 121 and the surrounding heating zone 122 in the same time is different. Correspondingly, the heat provided to the central region on the substrate 11 and the peripheral edge region on the substrate 11 is not the same, which facilitates controlling the heat of the core profiling holes 131 at different positions in the battery drying fixture 1.

[0083] In the embodiments of the present application, independent heating circuits can be respectively provided for the inner heating zone 121 and the surrounding heating zone 122, so as to electrically connect the inner heating zone 121 and the surrounding heating zone 122 to the power supply through their respective heating circuits. For example, the heating circuit can include wires and a controller, or the heating circuit can also include wires.

[0084] Exemplarily, as Figure 2 As shown, a pressing member 191 can be used to press and fit the heating element 12 onto the substrate 11 for fixation. And a connector 16 can be provided for the heating element 12. The connector 16 can be fixed at one end of the substrate 11, and each connector on the connector 16 is electrically connected to the heating circuit of a heating zone of the heating element 12, so as to electrically connect the heating circuit to the power supply through the connector 16. A wire groove 192 can also be provided on the side of the pressing member 191 away from the heating element 12, and the wire groove 192 is fixedly connected to the substrate 11 to form a space for accommodating the heating circuit between the pressing member 191 and the wire groove 192.

[0085] The battery drying fixture 1 provided by the embodiment of the present application, since the substrate 11 is made of a heat-conducting material, the substrate 11 can be used to transfer heat at a relatively fast speed. And a limiting structural member 13 with a plurality of battery cell profiling holes 131 is arranged on the substrate 11, and the battery cells can be accommodated in the battery drying fixture 1 through the battery cell profiling holes 131. Moreover, a heating member 12 is arranged on the substrate 11, and the heating member 12 can be used to provide heat to the substrate 11 and the limiting structural member 13, so as to heat the battery cells in the battery cell profiling holes 131. At the same time, the heating member 12 is set to include two structures, an internal heat zone 121 and a surrounding heat zone 122, capable of independently controlling the heating power. According to the amount of heat required in different regions of the battery drying fixture 1, the internal heat zone 121 and the surrounding heat zone 122 can be controlled respectively, so that the central region and the peripheral edge region of the battery drying fixture 1 receive the same or nearly the same amount of heat, and thus the battery cells in the battery cell profiling holes 131 at different positions in the battery drying fixture 1 receive the same or nearly the same amount of heat, so as to realize uniform heating of all the battery cells carried in the battery drying fixture 1, and make all the battery cells in the battery drying fixture 1 have the same or nearly the same drying rate.

[0086] In some possible embodiments of the present application, as Figure 3 shown, the surrounding heat zone 122 is arranged to surround the internal heat zone 121.

[0087] In the embodiment of the present application, the surrounding heat zone 122 in the heating member 12 can be set as an annular structure, and the surrounding heat zone 122 surrounds the internal heat zone 121 for one week. For example, when the substrate 11 is a rectangular structure, the internal heat zone 121 can be set as a rectangle similar to the rectangular substrate 11, and the surrounding heat zone 122 is a rectangular ring. When the substrate 11 is a circular structure, the internal heat zone 121 can be set as a circle similar to the circular substrate 11, and the surrounding heat zone 122 is a circular ring. In this way, the surrounding heat zone 122 can heat the four peripheral edge regions of the substrate 11, while the internal heat zone 121 can heat the rectangular region near the center of the substrate 11.

[0088] In the above embodiment, since the surrounding heat zone 122 is set as a structure surrounding the internal heat zone 121 for one week, less heat can be provided to the central region of the substrate 11 through the internal heat zone 121, and more heat can be provided to the four peripheral edges of the substrate 11 through the surrounding heat zone 122. Compared with the case where the heating member 12 is set as a whole structure, and the temperature of the central region of the substrate 11 is higher than that of the edge region due to heat accumulation when heating the substrate 11, in the embodiment of the present application, less heat can be provided to the central region of the substrate 11 through the internal heat zone 121, so that the heat received by each region on the substrate 11 is nearly the same.

[0089] In some possible embodiments of the present application, referring to Figure 4 , Figure 4 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 2 . The internal heat zone 121 includes at least two sub-heat zones, and the at least two sub-heat zones are adjacent to each other in sequence, and the sub-heat zone far from the center of the substrate 11 is arranged around the sub-heat zone close to the center of the substrate 11.

[0090] In the embodiments of the present application, the closer to the central region of the substrate 11, the easier it is for heat to accumulate, and the temperature of the central region of the substrate 11 is more likely to be higher than the temperature of the peripheral region of the substrate 11. As Figure 4 shown, the internal heat zone 121 of the heating element 12 can be set to a structure of at least two sub-heat zones, and the heating power of each sub-heat zone can be independently controlled.

[0091] Exemplarily, the internal heat zone 121 can be set to three sub-heat zones. Among them, one sub-heat zone is located at the center of the substrate 11, another sub-heat zone surrounds the sub-heat zone located at the center of the substrate 11, and the third sub-heat zone surrounds the other sub-heat zone. Alternatively, the internal heat zone 121 can also be set to four sub-heat zones, five sub-heat zones, etc., and multiple sub-heat zones are arranged in sequence around the center of the substrate 11.

[0092] In the above embodiments, since the internal heat zone 121 includes at least two sub-heat zones, the heat provided to the annular region corresponding to each sub-heat zone on the substrate 11 can be independently controlled, so that the heat of each annular region on the substrate 11 can be accurately controlled, which is beneficial to reducing the situation that the temperature of the region closer to the center of the substrate 11 on the substrate 11 is higher than the temperature of other regions on the substrate 11.

[0093] In some possible embodiments of the present application, as Figure 4 shown, the internal heat zone 121 includes a first sub-heat zone 1211 and a second sub-heat zone 1212. The first sub-heat zone 1211 is close to the center of the substrate 11, and the second sub-heat zone 1212 is arranged around the first sub-heat zone 1211.

[0094] In the embodiments of the present application, in order to achieve accurate control of the heat of different regions on the substrate 11 and at the same time simplify the control of the heating element 12. As Figure 4 shown, the internal heat zone 121 of the heating element 12 can be set to a structure of the first sub-heat zone 1211 and the second sub-heat zone 1212, and the heating power of the first sub-heat zone 1211 and the second sub-heat zone 1212 can be independently controlled.

[0095] Exemplarily, the first sub-heating zone 1211 can be set as a rectangle similar to the shape of the substrate 11, and the second sub-heating zone 1212 can be set as an annular structure. The first sub-heating zone 1211 is attached to the central region of the substrate 11, and the second sub-heating zone 1212 surrounds the first sub-heating zone 1211 for one week.

[0096] In the above embodiment, since the internal heating zone 121 includes the first sub-heating zone 1211 and the second sub-heating zone 1212, the heating amounts of the regions on the substrate 11 corresponding to the first sub-heating zone 1211 and the second sub-heating zone 1212 can be independently controlled, which is beneficial to reducing the situation that the temperature of the region on the substrate 11 corresponding to the first sub-heating zone 1211 is higher or lower than the temperature of the region corresponding to the second sub-heating zone 1212.

[0097] In some possible embodiments of the present application, referring to Figure 5 , Figure 5 is a schematic structural diagram of the heating element in the battery drying fixture provided by the present application Figure 3 . The sub-heating zone close to the center of the substrate 11 includes at least two internal sub-heating zones, and the at least two internal sub-heating zones are distributed in a rectangular array.

[0098] In the embodiment of the present application, as Figure 4 and Figure 5 shown, the sub-heating zone at the center of the substrate 11 in the heating element can be set as a structure of a plurality of internal sub-heating zones distributed in a rectangular array. For example, two internal sub-heating zones can be set, and the two internal sub-heating zones can be distributed side by side. Three internal sub-heating zones can also be set, and the three internal sub-heating zones can be arranged in sequence. Or, the Figure 4 the first sub-heating zone 1211 can be set as a structure including four internal sub-heating zones, and the four internal sub-heating zones can be distributed in a rectangular array of two rows and two columns.

[0099] In the above embodiment, since the sub-heating zone close to the center of the substrate 11 is set as at least two internal sub-heating zones distributed in a rectangular array, the region close to the center of the substrate 11 can be divided into more and smaller heating regions, so that the temperature of the region close to the center of the substrate 11 can be made consistent or substantially consistent with the temperature of the edge of the substrate 11 by independently controlling the heating power of each internal sub-heating zone.

[0100] In some possible embodiments of the present application, as Figure 5 shown, the internal heating zone 121 includes at least four internal sub-heating zones 1213, and the at least four internal sub-heating zones 1213 are distributed in a rectangular array.

[0101] In the embodiments of the present application, the internal heat zone 121 can be set to a structure including at least four internal sub-heat zones 1213, and the at least four internal sub-heat zones 1213 are distributed in a rectangular array. Among them, the heating power of each internal sub-heat zone 1213 can be independently controlled.

[0102] Exemplarily, the internal heat zone 121 can be set to four internal sub-heat zones 1213, and the four internal sub-heat zones 1213 can be distributed in a rectangular array of two rows and two columns. The internal heat zone 121 can also be set to six internal sub-heat zones 1213, and the six internal sub-heat zones 1213 can be distributed in a rectangular array of three rows and two columns. The internal heat zone 121 can also be set to eight internal sub-heat zones 1213, and the eight internal sub-heat zones 1213 can be distributed in a rectangular array of four rows and two columns.

[0103] In the above embodiments, since the internal heat zone 121 includes at least four internal sub-heat zones 1213 and the at least four internal sub-heat zones 1213 are distributed in a rectangular array, the heat received by the area on the substrate 11 corresponding to the internal heat zone 121 can be controlled more precisely, so that the heat received by different areas in the area on the substrate 11 corresponding to the internal heat zone 121 is consistent with or close to the heat required by the battery cell.

[0104] In some possible embodiments of the present application, the heating power of the internal heat zone 121 is less than the heating power of the surrounding heat zone 122.

[0105] In the embodiments of the present application, when setting the specific structure of the heating element 12, the heating power of the internal heat zone 121 in the heating element 12 can be set to be less than the heating power of the surrounding heat zone 122. For example, the density of the heating wires in the internal heat zone 121 can be made less than the density of the heating wires in the surrounding heat zone 122; the resistivity of the internal heat zone 121 can also be made less than the resistivity of the surrounding heat zone 122, so that when the same voltage is applied to the internal heat zone 121 and the surrounding heat zone 122, the heat generated by the internal heat zone 121 will be less than the heat generated by the surrounding heat zone 122. Alternatively, the voltage applied to the internal heat zone 121 and the surrounding heat zone 122 can also be controlled so that the heat generated by the internal heat zone 121 is less than the heat generated by the surrounding heat zone 122.

[0106] In the above embodiments, since the heating power of the internal heat zone 121 of the heating element 12 is less than the heating power of the surrounding heat zone 122, the heat received by the central region of the substrate 11 can be made less than the heat received by the edge region of the substrate 11. And because the heat in the edge region of the substrate 11 dissipates faster than the heat in the central region of the substrate 11, the temperatures of the central region and the edge region on the substrate 11 can be made substantially the same, and further, the temperatures of the battery cells at different positions in the battery drying fixture 1 can be made substantially the same.

[0107] In some possible embodiments of the present application, with reference to Figure 6 , Figure 7 and Figure 8 , Figure 6 is a schematic structural view of the profiling block in the battery drying fixture provided by the present application, Figure 7 is a sectional structural view of the guiding block in the battery drying fixture provided by the present application, Figure 8 is a schematic structural view of the guiding block in the battery drying fixture provided by the present application. The limiting structural member 13 includes a guiding block 132 and a profiling block 133. The profiling block 133 is disposed on the substrate 11, and the guiding block 132 is located on the side of the profiling block 133 away from the substrate 11; the battery cell profiling hole 131 includes a guiding section 1311 and a limiting section 1312. The limiting section 1312 is disposed on the profiling block 133, and the guiding section 1311 is disposed on the guiding block 132. The diameter of at least part of the guiding section 1311 is greater than the diameter of the limiting section 1312.

[0108] In the embodiments of the present application, as Figure 2 shown, a guiding block 132 can be provided in the limiting structural member 13, and the guiding block 132 and the profiling block 133 can be combined to form the limiting structural member 13. Alternatively, the guiding block 132 and the profiling block 133 can also be provided as an integral structure.

[0109] Exemplarily, a plurality of profiling blocks 133 can be provided in the limiting structural member 13, and the plurality of profiling blocks 133 can be arranged side by side so that the plurality of profiling blocks 133 are close to covering one side of the substrate 11. Alternatively, a single integral profiling block 133 having a size similar to that of the substrate 11 can also be provided. The outer shape of the guiding block 132 is substantially the same as the outer shape of the profiling block 133. The guiding block 132 is located on the side of the profiling block 133 away from the substrate 11, and the guiding block 132 and the profiling block 133 can be fixedly connected into one body by bolts.

[0110] In another example, the profiling block 133 can be made of the same material as the substrate 11. For example, the profiling block 133 is made of a metal material such as aluminum, aluminum alloy, copper, or copper alloy. This allows the heat generated by the heating element to be quickly transferred through the substrate 11 to the profiling block 133. Then, the bottom of the battery cell can be heated through the substrate 11, and the side wall of the battery cell can be heated through the profiling block 133, which is beneficial to improving the heating efficiency of the battery cell. The guiding block 132 can be made of a material such as plastic that is less hard than the battery cell. The thermal conductivity of plastic is poorer than that of metal. The guiding block 132 can not only reduce the scratching of the battery cell but also slow down the heat dissipation of the profiling block 133 to the surrounding environment.

[0111] In yet another example, as Figure 6 shown, a limiting section 1312 can be provided on the profiling block 133. The shape of the limiting section 1312 is the same as the shape of the battery cell. For example, the limiting section 1312 is a cylindrical hole or a square hole. As Figure 7 and Figure 8 shown, a guiding section 1311 can be provided on the guiding block 132. The shape of the guiding section 1311 is similar to the shape of the battery cell, and the diameter of the guiding section 1311 is larger than the diameter of the limiting section 1312. For example, the guiding section 1311 can be provided as a frustum-shaped through hole, and the end with a smaller diameter of the frustum-shaped through hole is adjacent to the limiting section 1312. Alternatively, a limiting section 1312 can also be provided on the guiding member. The diameter of the limiting section 1312 on the guiding member is the same as the diameter of the limiting section 1312 on the profiling block 133. Each guiding section 1311 on the guiding member corresponds to a limiting section 1312 on the profiling block 133, and the guiding section 1311 on the guiding member and the corresponding limiting section 1312 on the profiling block 133 are coaxially arranged.

[0112] In the above embodiments, since the battery cell profiling hole 131 includes the guiding section 1311 and the limiting section 1312, during the process of inserting the battery cell into the battery cell profiling hole 131, the diameter of the guiding section 1311 is larger than the diameter of the limiting section 1312, that is, the diameter of the guiding section 1311 is larger than the diameter of the battery cell. Thus, the battery cell can more easily enter the battery cell profiling hole 131, which is beneficial to reducing the requirement for the motion accuracy of the equipment or device for handling the battery cell.

[0113] In some possible embodiments of the present application, as Figure 1 shown, the battery drying fixture 1 further includes a flexible protection member 14. The flexible protection member 14 is attached to the battery cell profiling hole 131, and the hardness of the flexible protection member 14 is less than the hardness of the battery cell.

[0114] In the embodiments of the present application, a flexible protective member 14 can be provided on the substrate 11 and the limiting structural member 13, so that the battery cell abuts against the hole wall of the battery cell profiling hole 131 through the flexible protective member 14. For example, the flexible protective member 14 can be made of Teflon tape, and the flexible protective member 14 can also be made of a film made of materials such as polytetrafluoroethylene and polyimide. And the flexible protective member 14 can be made of a material with a hardness less than that of the battery cell.

[0115] Exemplarily, the flexible protective member 14 can be bonded to the surface of the substrate 11 where the limiting structural member 13 is provided, and the flexible protective member 14 can be bonded to the hole wall of the battery cell profiling hole 131, so that both the side wall and the bottom of the battery cell profiling hole 131 have the flexible protective member 14. In this way, after the battery cell is placed into the battery cell profiling hole 131, the battery cell directly abuts against the flexible protective member 14.

[0116] In the above embodiments, since the flexible protective member 14 is provided in the battery cell profiling hole 131, during the process of placing the battery cell into the battery cell profiling hole 131 or taking the battery cell out of the battery cell profiling hole 131, the battery cell can contact the flexible protective member 14 and move relative to the flexible protective member 14. Because the hardness of the flexible protective member 14 is less than that of the battery cell, it is beneficial to reduce the risk of scratching the battery cell by the battery drying fixture 1.

[0117] In some possible embodiments of the present application, as Figure 1 and Figure 2 shown, the battery drying fixture 1 further includes a reflector 15. The reflector 15 surrounds the limiting structural member 13 for one week. Along the stacking direction Z of the limiting structural member 13 and the substrate 11, the height of the reflector 15 is greater than or equal to the height of the limiting structural member 13.

[0118] In the embodiments of the present application, the reflector 15 can be provided around the limiting structural member 13. For example, the reflector 15 is set as a thin plate-like structure, and the surface of the reflector 15 facing the limiting structural member 13 can have good heat reflection performance. For example, tin foil is provided on the surface of the reflector 15, or heat-reflective paint is coated on the surface of the reflector 15 to reflect the heat radiated from the limiting structural member 13 by using the tin foil or the heat-reflective paint.

[0119] Exemplarily, around the circumferential direction of the limiting structural member 13, the reflector 15 can surround the limiting structural member 13 for one week. Along the stacking direction Z of the limiting structural member 13 and the substrate 11, the height of the reflector 15 can be greater than or equal to the height of the limiting structural member 13, such as the height of the reflector 15 being equal to the height of the limiting structural member 13.

[0120] In the above embodiments, since a reflector 15 is disposed around the limiting structural member 13, the heat radiated by the limiting structural member 13 can be reflected to the limiting structural member 13 by the reflector 15, which is beneficial to slowing down the speed at which the heat of the battery drying fixture 1 dissipates into the surrounding environment and is beneficial to improving the energy utilization rate.

[0121] In some possible embodiments of the present application, as Figure 1 and Figure 2 shown, the battery drying fixture 1 further includes a first moving assembly 17. The first moving assembly 17 is disposed on the substrate 11. The first moving assembly 17 is matched with the moving fixture 2, and the battery drying fixture 1 can move on the moving fixture 2 through the first moving assembly 17.

[0122] In the embodiments of the present application, the first moving assembly 17 can be disposed on two opposite sides of the substrate 11 so that the battery drying fixture 1 can move on the moving fixture 2 through the first moving assembly 17. For example, a plurality of first carrying wheels can be disposed in the first moving assembly 17, and the plurality of first carrying wheels are respectively disposed on two opposite sides of the substrate 11. The axis of the first carrying wheel is parallel to the plane where the substrate 11 is located. The first carrying wheel can adopt a roller. For example, if seven rollers are respectively disposed on two opposite sides of the substrate 11, the battery drying fixture 1 can move on the moving fixture 2 through the rollers.

[0123] Exemplarily, a first guiding wheel 171 can be disposed in the first moving assembly 17. The first guiding wheel 171 can adopt a roller. The first guiding wheel 171 can be disposed at a position adjacent to the first carrying wheel on the substrate 11, and the axis of the first guiding wheel 171 is perpendicular to the substrate 11. Then, the moving direction of the battery drying fixture 1 on the moving fixture 2 can be guided and limited by the first guiding wheel 171.

[0124] In the above embodiments, since the first moving assembly 17 is disposed on the substrate 11, it is convenient for the battery drying fixture 1 to move relative to the moving fixture 2 through the first moving assembly 17, which is beneficial to reducing the wear when the battery drying fixture 1 moves relative to the moving fixture 2.

[0125] In some possible embodiments of the present application, as Figure 1 and Figure 2 shown, the battery drying fixture 1 further includes a first locking assembly 18. The first locking assembly 18 is disposed on the substrate 11. When the battery drying fixture 1 is placed on the moving fixture 2, the first locking assembly 18 can move relative to the substrate 11 and abut against the moving fixture 2 to limit the movement of the battery drying fixture 1 relative to the moving fixture 2.

[0126] In the embodiment of the present application, when the battery drying fixture 1 is placed on the moving fixture 2, it is necessary to fix the battery drying fixture 1 on the moving fixture 2. Then, a first locking component 18 can be provided on the battery drying fixture 1. For example, a set of first locking components 18 can be respectively provided at two adjacent corners of the substrate 11, and the first locking component 18 can be set as a structure capable of generating movement. In this way, after the battery drying fixture 1 moves into place on the moving fixture 2, the movement of the first locking component 18 relative to the substrate 11 can be controlled, so that a part of the first locking component 18 abuts against the corresponding structure on the moving fixture 2, thereby restricting the movement of the battery drying fixture 1 relative to the moving fixture 2.

[0127] In the above embodiment, since the first locking component 18 is provided on the battery drying fixture 1, the movement of the battery drying fixture 1 relative to the moving fixture 2 can be restricted by using the first locking component 18. Thus, after the battery drying fixture 1 moves into place on the moving fixture 2, the battery drying fixture 1 can be fixed relative to the moving fixture 2, so as to facilitate accurately placing the battery cell into the battery cell profiling hole 131, or taking out the battery from the battery cell profiling hole 131.

[0128] In addition, the embodiment of the present application further provides a battery drying device. Refer to Figure 9 , Figure 9 which is a schematic structural diagram of the battery drying device provided by the present application. The battery drying device includes: a moving fixture 2 and the battery drying fixture 1 provided in any one of the above embodiments. Among them, the moving fixture 2 includes a carrier 21 and at least two carrier mechanisms 22, and the at least two carrier mechanisms 22 are stacked on the carrier 21 at intervals; the battery drying fixture 1 is movably carried on the carrier mechanism 22.

[0129] In the embodiment of the present application, the moving fixture 2 is used to move the battery drying fixture 1. The battery drying fixture 1 can be moved to the drying station by the moving fixture 2, and the battery drying fixture 1 carrying the battery cell is electrically connected to the power supply at the drying station through the connector 16 to realize heating and drying of the battery cell.

[0130] Exemplarily, such as Figure 9As shown, at least two bearing mechanisms 22 can be arranged on the bearing frame 21 of the mobile fixture 2, and the bearing mechanisms 22 match the battery drying fixture 1. The battery drying fixture 1 can be placed on the bearing mechanism 22 through the first moving component 17, or the battery drying fixture 1 can be taken out from the bearing mechanism 22 through the first moving component 17. For example, five bearing mechanisms 22 can be arranged on the bearing frame 21, and the five bearing mechanisms 22 are stacked in sequence, and there is a certain height gap between adjacent bearing mechanisms 22, and the gap between adjacent bearing mechanisms 22 is greater than the thickness of the battery drying fixture 1 containing the battery cells. Three, six, or other number of bearing mechanisms 22 can also be arranged on the bearing frame 21, and the specific number of the bearing mechanisms 22 is not limited in the embodiment of the present application.

[0131] The battery drying device provided in the embodiment of the present application includes the battery drying fixture 1 provided in the above embodiment, and therefore, can achieve uniform heating of all the battery cells carried in the battery drying fixture 1, so that all the battery cells in the battery drying fixture 1 have the same or nearly the same drying rate. And it is convenient to move the battery drying fixture 1 to the station for drying the battery cells by moving the included angle.

[0132] In some possible embodiments of the present application, refer to Figure 10 , Figure 10 Provided for this application Figure 9 The partial enlarged schematic diagram of part A in the figure. The carrying mechanism 22 includes a first guide component 221, and the battery drying fixture 1 includes a first moving component 17 matched with the first guide component 221. The battery drying fixture 1 moves on the first guide component 221 through the first moving component 17 to enter the moving fixture 2 or exit from the moving fixture 2.

[0133] In the present application embodiment, Figure 10 As shown, a first guide assembly 221 may be provided in the carrier mechanism 22 to guide and limit the movement path of the battery drying fixture 1 in the mobile fixture 2 using the first guide assembly 221. For example, the first guide assembly 221 may be provided as a structure including a guide rail 2211 and an auxiliary member 2212, and both the guide rail 2211 and the auxiliary member 2212 are matched with the first mobile assembly 17 in the battery drying fixture 1.

[0134] Exemplarily, the guide rail 2211 in the first guiding assembly 221 can be set as a bar-shaped rail structure with grooves, and the auxiliary member 2212 in the first guiding assembly 221 can be set as a flat strip-shaped structure. The guide rail 2211 and the auxiliary member 2212 are respectively located on opposite sides of the carrier 21. In this way, the first carrier wheel in the first moving assembly 17 can roll on the guide rail 2211 and the auxiliary member 2212, so that the battery drying jig 1 can move on the carrying mechanism 22; the first guiding wheel 171 can be clamped in the groove of the guide rail 2211 to limit the movement of the first carrier wheel along the extending direction of the guide rail 2211.

[0135] In the above embodiment, since the first guiding assembly 221 matching the first moving assembly 17 in the battery drying jig 1 is provided in the carrying mechanism 22, the battery drying jig 1 can move relative to the moving jig 2 on the carrying mechanism 22 through the first moving assembly 17 and the first guiding assembly 221, so as to facilitate the battery drying jig 1 to enter or exit from the moving jig 2.

[0136] In some possible embodiments of the present application, with reference to Figure 11 , Figure 11 is a partial enlarged schematic view of part B in Figure 9 provided by the present application. The battery drying device further includes a first locking assembly 18 and a first positioning member 23 matching the first locking assembly 18. The first locking assembly 18 is disposed on one of the substrate 11 and the carrier 21, and the first positioning member 23 is disposed on the other of the substrate 11 and the carrier 21. The first locking assembly 18 cooperates with the first positioning member 23 to limit the movement of the battery drying jig 1 relative to the carrier 21.

[0137] In the embodiment of the present application, a first locking assembly 18 and a first positioning member 23 that match each other can be respectively disposed on the substrate 11 in the battery drying jig 1 and the carrier 21 in the moving jig 2, so as to limit the movement of the battery drying jig 1 relative to the moving jig 2 through the cooperation of the first locking assembly 18 and the first positioning member 23.

[0138] Exemplarily, as shown in Figure 9 and Figure 11 , a first locking assembly 18 can be respectively disposed at two adjacent corners of the battery drying jig 1, and two first positioning members 23 corresponding to the first locking assembly 18 are respectively disposed at one end of each group of carrying mechanisms 22. Alternatively, a first positioning member 23 can be respectively disposed at two adjacent corners of the battery drying jig 1, and two first locking assemblies 18 corresponding to the first positioning member 23 are respectively disposed at one end of each group of carrying mechanisms 22.

[0139] Another example, as shown in Figure 11As shown, a first positioning block may be provided in the first positioning member 23. For example, the first positioning block may be fixed at a position adjacent to the guide rail 2211 on the carrier 21, and a positioning hole facing the battery drying fixture 1 may be provided on the first positioning block. A first driving member 181 and a first locking member 182 may be provided in the first locking assembly 18. For example, the first locking member 182 may be provided as a rod-shaped structure matching the positioning hole on the first positioning block. The first driving member 181 may be fixed on the substrate 11. The first driving member 181 may employ a device capable of generating linear motion, such as a cylinder, an oil cylinder, or an electric cylinder. The first locking member 182 may be fixed to the output shaft of the first driving member 181. Then, the first driving member 181 may drive the first locking member 182 to move in a direction closer to or away from the first positioning block, so that the first locking member 182 is inserted into the positioning hole on the first positioning block, or the first locking member 182 is withdrawn from the positioning hole on the first positioning block.

[0140] In the above embodiment, since the first locking assembly 18 and the first positioning member 23 that match each other are respectively provided on the substrate 11 and the carrier 21, after the battery drying fixture 1 moves into place on the moving fixture 2, the first locking assembly 18 may be controlled to abut against the first positioning member 23, so that the battery drying fixture 1 can be fixed to the moving fixture 2 through the first locking assembly 18 and the first positioning member 23, thereby reducing the occurrence of unnecessary movement of the battery drying fixture 1 relative to the moving fixture 2.

[0141] In some possible embodiments of the present application, as Figure 10 and Figure 11 shown, the battery drying device further includes a detection member 24 and a trigger member 25. The detection member 24 is provided on one of the substrate 11 and the carrier 21, and the trigger member 25 is provided on the other of the substrate 11 and the carrier 21. When the battery drying fixture 1 moves relative to the carrier 21 until the detection member 24 abuts against the trigger member 25, the detection member 24 can generate a control signal to control the movement of the first locking assembly 18.

[0142] In the embodiments of the present application, a detecting member 24 and a triggering member 25 can be respectively arranged on the substrate 11 and the carrier 21 to output a signal indicating that the battery drying fixture 1 has moved into place on the moving fixture 2 through the detecting member 24. For example, the detecting member 24 can be a contact switch, a proximity sensor, etc. The detecting member 24 can be fixed on the carrier 21, such as fixed on the side of the guide rail 2211. The triggering member 25 can be set as a plate-like structure and fixed on the substrate 11 at a position corresponding to the detecting member 24. Or, the detecting member 24 can be fixed on the substrate 11 while the triggering member 25 is fixed on the carrier 21. In this way, during the movement of the battery drying fixture 1 on the carrying mechanism 22, until the triggering member 25 abuts against the detecting member 24, the detecting member 24 can generate a control signal. For example, the control signal can be an electrical signal, and the movement of the first locking assembly 18, the pushing and pulling mechanism 34, etc. can be controlled through this electrical signal.

[0143] Exemplarily, the detecting member 24 can be electrically connected to the first driving member 181 in the first locking assembly 18. When the detecting member 24 generates a control signal, the first driving member 181 can be controlled to perform a locking action, so that the first driving member 181 drives the first locking member 182 to abut against the first positioning member 23.

[0144] In the above embodiments, since the matching detecting member 24 and triggering member 25 are respectively arranged on the substrate 11 and the carrier 21, when the battery drying fixture 1 moves into place on the moving fixture 2, the detecting member 24 can generate a control signal in time, so as to obtain the information that the battery drying fixture 1 has moved into place on the moving fixture 2 in time.

[0145] The embodiments of the present application further provide a battery drying system. Refer to Figure 12 and Figure 13 , Figure 12 is the structural schematic diagram of the battery drying system provided by the present application Figure 1 , Figure 13 is the structural schematic diagram of the battery drying system provided by the present application Figure 2 . The battery drying system includes: a disassembly and assembly tray device and the battery drying device provided in the above embodiments. Among them, the disassembly and assembly tray device includes adjacent disassembly tooling 3 and parking tooling 4; the parking tooling 4 is matched with the moving fixture 2 so that the moving fixture 2 can be movably carried on the parking tooling 4; the disassembly tooling 3 includes at least two extraction mechanisms 31 stacked at intervals on the disassembly tray rack 5, and the battery drying fixture 1 can be movably carried on the extraction mechanism 31; the disassembly tooling 3 can move the battery drying fixture 1 located on the extraction mechanism 31 to the carrying mechanism 22, or move the battery drying fixture 1 located on the carrying mechanism 22 to the extraction mechanism 31.

[0146] In the embodiments of the present application, the disassembly and assembly tray device carries the battery drying fixture 1 to facilitate placing the battery cells on the battery drying fixture 1 or taking out the dried battery cells from the battery drying fixture 1. The disassembly and assembly tray device is also used to move a plurality of battery drying fixtures 1 onto the moving fixture 2 or separate the battery drying fixture 1 from the moving fixture 2 to achieve the assembly of a plurality of battery drying fixtures 1 on the moving fixture 2 or complete the disassembly of the battery drying fixture 1 from the moving fixture 2.

[0147] Exemplarily, as Figure 12 and Figure 13 shown, a parking tooling 4 can be arranged in the disassembly and assembly tray device. The parking tooling 4 is matched with the moving fixture 2, and the moving fixture 2 can be moved onto the parking tooling 4 and temporarily parked on the parking tooling 4. After completing the disassembly or assembly of a plurality of battery drying fixtures 1 on the moving fixture 2, the moving fixture 2 can be moved from the parking tooling 4 to other workstations.

[0148] Another example, as Figure 12 and Figure 13 shown, a disassembly and assembly tooling can be arranged at a position adjacent to the parking tooling 4 in the disassembly and assembly tray device, and at least two extraction layer mechanisms 31 can be arranged in the disassembly and assembly tooling. For example, a disassembly and assembly tray frame 5 can be arranged in the disassembly and assembly tray device, and then the components in the disassembly and assembly tooling 3 and the parking tooling 4 can be installed on the disassembly and assembly tray frame 5. The extraction layer mechanism 31 can be set to be matched with the battery drying fixture 1 so that the battery drying fixture 1 can move on the extraction layer mechanism 31.

[0149] In yet another example, a plurality of extraction layer mechanisms 31 can be stacked and fixed on the disassembly and assembly tray frame 5 in sequence, and there is a gap with a certain distance between adjacent extraction layer mechanisms 31. The gap behind adjacent extraction layer mechanisms 31 can accommodate a battery drying fixture 1 with a battery cell placed therein. For example, the number of extraction layer mechanisms 31 can be the same as the number of bearing mechanisms 22 in the moving fixture 2, that is, after the moving fixture 2 is parked on the parking tooling 4, a plurality of extraction layer mechanisms 31 and a plurality of bearing mechanisms 22 correspond to each other one by one. Thus, as Figure 12 shown, after placing a battery cell in the profile hole 131 of the battery drying fixture 1 on the extraction layer mechanism 31, the battery drying fixture 1 can be moved along the extraction layer mechanism 31 to the corresponding bearing mechanism 22, that is, the battery drying fixture 1 is moved from the disassembly and assembly tooling to the moving fixture 2. After completing the drying of the battery cell on the battery drying fixture 1 on the moving fixture 2, the moving fixture 2 can be moved to the parking tooling 4, and then the battery drying fixture 1 can be moved along the bearing mechanism 22 to the corresponding extraction layer mechanism 31, that is, the battery drying fixture 1 is moved from the moving fixture 2 to the disassembly and assembly tooling to facilitate the disassembly of the battery drying fixture 1.

[0150] The battery drying system provided by the embodiment of the present application includes the battery drying fixture 1 provided by the above embodiment, so that uniform heating of all the battery cells carried in the battery drying fixture 1 can be achieved, and all the battery cells in the battery drying fixture 1 have the same or nearly the same drying rate. And an adjacent disassembly and assembly tooling and a parking tooling 4 are provided in the disassembly and assembly tray device, which is convenient for completing the assembly or disassembly of a plurality of battery drying fixtures 1 on the moving fixture 2.

[0151] In some possible embodiments of the present application, referring to Figure 14 、 Figure 15 and Figure 16 , Figure 14 is a partial enlarged schematic view of part C of Figure 13 provided by the present application, Figure 15 is a partial enlarged schematic view of part D of Figure 13 provided by the present application, Figure 16 is a partial enlarged schematic view of part E of Figure 12 provided by the present application. The layer extraction mechanism 31 includes a second guiding component, the second guiding component corresponds to the first guiding component 221 in the moving fixture 2 and matches the first moving component 17 of the battery drying fixture 1; the disassembly and assembly tooling further includes a second locking component 32 arranged on the disassembly and assembly tray rack 5, and the battery drying fixture 1 further has a second positioning component matching the second locking component 32. When the battery drying fixture 1 moves from the first guiding component 221 to the second guiding component through the first moving component 17, the second locking component 32 cooperates with the second positioning component to limit the movement of the battery drying fixture 1 relative to the disassembly and assembly tooling 3.

[0152] In the embodiment of the present application, as Figure 12 shown, a second guiding component can be arranged in the layer extraction mechanism 31, and the second guiding component can be set to a structure including two guiding members. The two guiding members are oppositely arranged on the disassembly and assembly tray rack 5 and match the first moving component 17 in the battery drying fixture 1. For example, one guiding member can be set to a plate-like structure with a groove, so that the first bearing wheel in the first moving component 17 rolls in the groove and the first guiding wheel 171 in the first moving component 17 abuts against the side wall of the groove to limit the movement direction of the battery drying fixture 1 on the layer extraction mechanism 31. The other guiding member can be set to a flat plate-like structure, so that the first bearing wheel in the first moving component 17 rolls on this flat plate. In this way, the movement of the battery drying fixture 1 on the disassembly and assembly tooling 3 is realized through the second guiding component and the first moving component 17.

[0153] In the embodiment of the present application, as Figure 14As shown, a second locking component 32 can be provided in the disassembly and assembly tooling 3 to fix the battery drying fixture 1 that moves from the moving fixture 2 to the extraction layer mechanism 31 through the second locking component 32.

[0154] Exemplarily, the second locking component 32 can be set to include a second driving member 322 and a second locking member 323. For example, a second carrier plate 321 can be fixed on the disassembly and assembly tray rack 5, such as fixing the second carrier plate 321 at a position adjacent to one end of the second guiding component on the disassembly and assembly tray rack 5. The second locking member 323 can be set to a rod-shaped structure with a barb at one end, and the second locking member 323 is rotatably arranged on the second carrier plate 321. The second driving member 322 can adopt a structure including a push rod and a compression spring. The push rod is slidably arranged on the second carrier plate 321, the compression spring is sleeved on the push rod, and one end of the push rod is connected to the end of the second locking member 323 away from the barb. Correspondingly, a second positioning member 183 can be provided on the substrate 11 of the battery drying fixture 1, and the second positioning member 183 can adopt a block-shaped cuboid block. As Figure 14 shown, after the battery drying fixture 1 moves into place on the extraction layer mechanism 31, under the action of the compression spring, the push rod moves in a direction away from the second positioning member 183, and the push rod drives the second locking member 323 to rotate, so that the barb on the second locking member 323 hooks on the second positioning member 183, thereby restricting the movement of the battery drying fixture 1 in the direction close to the parking tooling 4.

[0155] In the embodiment of the present application, as Figure 14 shown, the disassembly and assembly tooling 3 further includes a buffer component 33. The buffer component 33 is arranged at one end of the extraction layer mechanism 31 away from the parking tooling 4 and can generate deformation along the extension direction of the second guiding component; during the movement of the battery drying fixture 1 away from the first guiding component 221 on the second guiding component, the buffer component 33 generates deformation under the pressing of the battery drying fixture 1.

[0156] Exemplarily, the buffer assembly 33 can be set to a structure including a guide rod and a compression spring. For example, the guide rod can be slidably arranged on the second carrier plate 321 along the extending direction of the second guiding assembly, and the compression spring can be sleeved on the guide rod. In this way, during the process of the battery drying fixture 1 moving closer to the second locking assembly 32, the side surface of the substrate 11 first contacts the guide rod. As the battery drying fixture 1 continues to move closer to the second locking assembly 32, the compression spring sleeved on the guide rod is compressed, and the guide rod applies a force to the substrate 11 under the action of the compression spring, so as to decelerate the battery drying fixture 1 until the battery drying fixture 1 stops moving along the second guiding assembly, which is beneficial to reducing the collision between the battery drying fixture 1 and the disassembly and assembly tooling 3. During this process, the second positioning member 183 pushes the second locking member 323 to rotate, so as to realize the restriction of the movement of the battery drying fixture 1 by the second locking member 323, and thus fix the battery drying fixture 1 on the disassembly and assembly tooling 3 through the buffer assembly 33 and the second locking assembly 32.

[0157] In the above embodiment, since the layer extraction mechanism 31 and the moving fixture 2 respectively include corresponding second guiding assemblies and first guiding assemblies 221, it is convenient for the battery drying fixture 1 to move along the first guiding assembly 221 and the second guiding assembly through the first moving assembly 17, so as to realize the movement of the battery drying fixture 1 between the disassembly and assembly tooling 3 and the moving fixture 2. And the movement of the battery drying fixture 1 relative to the disassembly and assembly tooling 3 can be restricted through the cooperation of the second locking assembly 32 and the second positioning member 183.

[0158] In some possible embodiments of the present application, as Figure 13 shown, the disassembly and assembly tooling 3 further includes a push-pull mechanism 34. The push-pull mechanism 34 is slidably arranged on the disassembly and assembly tray rack 5 and corresponds to the layer extraction mechanism 31. The push-pull mechanism 34 can be locked or unlocked with the battery drying fixture 1, and the push-pull mechanism 34 is used to drive the battery drying fixture 1 to move between the bearing mechanism 22 and the layer extraction mechanism 31.

[0159] In the embodiments of the present application, a push-pull mechanism 34 can be arranged in the disassembly and assembly tooling 3 to drive the battery drying fixture 1 to move after the corresponding bearing mechanism 22 and the extraction layer mechanism 31 through the push-pull mechanism 34. For example, the push-pull mechanism 34 includes a push-pull bracket 341, a third locking component 342, and a push-pull driving member 343. The push-pull bracket 341 is slidably arranged on the disassembly and assembly tray rack 5 along the first direction X. The third locking component 342 is movably arranged on the push-pull bracket 341. The battery drying fixture 1 has a second positioning block matching the third locking component 342. The push-pull driving member 343 is fixed on the push-pull bracket 341 and is used to drive the third locking component 342 to move along the first direction X, so as to drive the battery drying fixture 1 to move between the first guiding component 221 and the second guiding component through the cooperation between the third locking component 342 and the second positioning block; the first direction X is the extending direction of the second guiding component.

[0160] Exemplarily, as Figure 13 shown, the push-pull bracket 341 can be arranged to be slidably arranged on the side of the disassembly and assembly tray rack 5 along the first direction X. The push-pull driving member 343 is fixed on the disassembly and assembly tray rack 5, and the push-pull driving member 343 is connected to the push-pull bracket 341. For example, the push-pull driving member 343 can adopt devices capable of generating linear motion such as an electric cylinder, a cylinder, and an oil cylinder. Then, the push-pull driving member 343 can drive the push-pull bracket 341 to reciprocate relative to the disassembly and assembly tray rack 5 along the first direction X. A plurality of third locking components 342 can be fixed on the push-pull bracket 341, and each third locking component 342 corresponds to an extraction layer mechanism 31. A third positioning member 184 corresponding to the third locking component 342 can be arranged on the battery drying fixture 1. In this way, the locking or unlocking of the push-pull mechanism 34 and the battery drying fixture 1 can be realized through the connection or separation between the third locking component 342 and the third positioning member 184, so as to facilitate the push-pull mechanism 34 to drive the battery drying fixture 1 to move between the bearing mechanism 22 and the extraction layer mechanism 31.

[0161] Another example, as Figure 13 shown, a push-pull mechanism 34 can be arranged on each side of the disassembly and assembly tray rack 5. One push-pull mechanism 34 can be used to push the battery drying fixture 1 from the disassembly and assembly tooling into the moving fixture 2 on the parking tooling 4, and the other push-pull mechanism 34 can be used to push the battery drying fixture 1 from the moving fixture 2 to the disassembly and assembly tooling.

[0162] In the embodiments of the present application, as Figure 15 and Figure 16As shown, the third locking component 342 includes a third locking accessory 3421, an unlocking member 3422, and a third driving member 3423. The third locking accessory 3421 is slidably disposed on the pushing and pulling bracket 341 along the second direction Y. The third locking accessory 3421 is matched with the second positioning block. The unlocking member 3422 is slidably disposed on the pushing and pulling bracket 341 along the second direction Y. The unlocking member 3422 corresponds to the second locking component 32. The third driving member 3423 is fixed to the pushing and pulling bracket 341 and is connected to both the third locking accessory 3421 and the unlocking member 3422. The third driving member 3423 is configured to drive the third locking accessory 3421 and the unlocking member 3422 to move along the second direction Y, so that the third locking accessory 3421 is connected to or separated from the second positioning member 183, and the unlocking member 3422 abuts against or separates from the second locking component 32. The second direction Y is perpendicular to the first direction X.

[0163] Exemplarily, as Figure 14 , Figure 15 and Figure 16 shown, a third positioning member 184 can be provided in the first locking component 18 of the battery drying fixture 1. The third positioning member 184 can be provided in the shape of a cuboid block and fixed to the substrate 11. The third locking accessory 3421 can be provided with a structure matching the third positioning member 184, such as a groove capable of clamping the third positioning member 184 on the third locking accessory 3421. The third carrier plate 3425 can be slidably disposed on the pushing and pulling bracket 341 along the second direction Y through the third sliding component 3424. The third sliding component 3424 can adopt a matching guide rail 2211 and slider. The third locking accessory 3421 is fixed to the third carrier plate 3425 so that the third locking accessory 3421 can move along the second direction Y, thereby clamping the third locking accessory 3421 on the third positioning member 184 or separating the third locking accessory 3421 from the third positioning member 184. The third driving member 3423 can adopt an electric cylinder, a pneumatic cylinder, an oil cylinder, etc. The third driving member 3423 is fixed to the pushing and pulling bracket 341, and the output shaft of the third driving member 3423 is fixedly connected to the third carrier plate 3425. The unlocking member 3422 can be fixed to a position adjacent to the third locking accessory 3421 on the third carrier plate 3425 and correspond to the second driving member 322 in the second locking component 32.

[0164] Such as Figure 15As shown, during the process of the third driving member 3423 driving the third locking accessory 3421 to approach the third positioning member 184, the unlocking member 3422 abuts against the second driving member 322 and pushes the second driving member 322 to slide. The second driving member 322 drives the second locking accessory 323 to rotate, so that the second locking accessory 323 can be separated from the second positioning member 183, so as to realize the unlocking of the second locking assembly 32 and the second positioning member 183. At the same time, the locking of the third locking accessory 3421 and the third positioning member 184 is realized, and then the battery drying fixture 1 can be driven by the pushing and pulling mechanism 34 to move in the first direction X towards the direction close to the moving fixture 2.

[0165] In the above embodiment, since the pushing and pulling mechanism 34 is provided in the disassembly and assembly tooling 3, the battery drying fixture 1 can be driven by the pushing and pulling mechanism 34 to move between the disassembly and assembly tooling 3 and the moving fixture 2, so that the assembly or disassembly of the battery drying fixture 1 in the moving fixture 2 can be quickly realized.

[0166] In some possible embodiments of the present application, such as Figure 10 and Figure 13 As shown, the parking tooling 4 includes a third guiding component 41, and the third guiding component 41 extends along the arrangement direction of the parking tooling 4 and the disassembly and assembly tooling 3; the moving fixture 2 includes a second moving component 26 matching the third guiding component 41, and the moving fixture 2 moves in a direction away from or close to the disassembly and assembly tooling through the second moving component 26 and the third guiding component 41.

[0167] In the embodiment of the present application, as Figure 13 shown, the third guiding component 41 can be provided on the parking tooling 4, and the third guiding component 41 can be set to include a structure of two parallel guide rails 2211, and the two guide rails 2211 are fixed on the disassembly and assembly disc rack 5 along the arrangement direction of the parking tooling 4 and the disassembly and assembly tooling 3. As Figure 10 shown, the second moving component 26 can be provided at the bottom of the moving fixture 2, the second bearing wheel 262 can be provided in the second moving component 26, the second bearing wheel 262 can adopt a plurality of rollers, and the second guiding wheel 261 can also be provided in the second moving component 26, and the axis of the second guiding wheel 261 is perpendicular to the axis of the second bearing wheel 262. So that the second bearing wheel 262 presses against the guide rail 2211 in the third guiding component 41, and the second guiding wheel 261 clamps on both sides of the guide rail 2211, so as to limit the moving direction of the moving fixture 2 on the parking tooling 4 through the second guiding wheel 261.

[0168] In the above embodiments, since the third guiding component 41 is provided at the parking station, and the second moving component 26 matching the third guiding component 41 is provided on the moving fixture 2, it is convenient to move the moving fixture 2 to the parking tooling 4 through the third guiding component 41 and the second moving component 26, or move the moving fixture 2 from the parking tooling 4 to other stations.

[0169] An embodiment of the present application further provides a battery production line, which includes a transfer system, a handling system, and the battery drying system provided in the above embodiments. Among them, the transfer system is arranged adjacent to the disassembly and assembly tray device for transporting battery cells; the handling system is arranged between the transfer system and the disassembly and assembly tray device for transporting the battery cells located on the transfer system into the cell profiling holes 131 of the battery drying fixture 1, or transporting the battery cells located in the cell profiling holes 131 to the transfer system.

[0170] In the embodiment of the present application, the transfer system is used to transport battery cells. For example, a conveyor belt capable of carrying and transporting multiple battery cells can be arranged in the transfer system to transport the battery cells to be dried to a position adjacent to the disassembly and assembly tray device through the transfer system. Or, the dried battery cells are transported from the battery drying system to the storage station or other processing stations through the transfer system.

[0171] In the embodiment of the present application, a handling system can be arranged between the transfer system and the disassembly and assembly tray device to take out the battery cells in the battery drying fixture 1 located on the disassembly and assembly tray device and place them in the transfer system. Or, the battery cells to be dried located on the transfer system are taken out through the handling system and placed in the cell profiling holes 131 of the battery drying fixture 1 located on the disassembly and assembly tray device. For example, the handling system can adopt a robotic arm, and a gripper for grasping and placing battery cells is arranged on the robotic arm.

[0172] Since the battery production line provided in the embodiment of the present application includes the battery drying fixture 1 provided in the above embodiments, uniform heating of all the battery cells carried in the battery drying fixture 1 can be realized, so that all the battery cells in the battery drying fixture 1 have the same or nearly the same drying rate. And a handling system is arranged between the transfer system and the battery drying system, which can realize the rapid transfer of battery cells between the transfer system and the battery drying system.

[0173] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the specification of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A battery drying fixture, characterized in that: include: A substrate, wherein the substrate is made of a thermally conductive material; A limiting structure, the limiting structure is arranged on the substrate, the limiting structure is formed with a plurality of battery cell profiling holes, and the battery cell profiling holes are used to accommodate and limit a single battery cell; A heating element, the heating element is arranged on a side of the substrate opposite to the limiting structure, the heating element comprises an internal heat zone and a surrounding heat zone, the internal heat zone corresponds to the battery cell profiling hole close to the center of the substrate, the surrounding heat zone corresponds to the battery cell profiling hole close to the edge of the substrate, along the overlapping direction of the heating element and the substrate, the orthographic projections of the internal heat zone and the surrounding heat zone are both located on the limiting structure, the internal heat zone and the surrounding heat zone are attached to the same surface of the substrate, and the heating power of the internal heat zone is less than the heating power of the surrounding heat zone; A heating circuit, wherein the internal heat zone and the surrounding heat zone are electrically connected to one of the heating circuits respectively, and the heating circuit is used to be electrically connected to a power supply to apply electrical energy to the internal heat zone and the surrounding heat zone respectively.

2. The battery drying fixture according to claim 1, characterized in that: The surrounding heat zone is arranged around the internal heat zone.

3. The battery drying fixture according to claim 2, characterized in that: The inner heat zone includes at least two sub-heat zones, which are arranged adjacent to each other in sequence, and the sub-heat zone far from the center of the substrate surrounds the sub-heat zone close to the center of the substrate.

4. The battery drying fixture according to claim 2, characterized in that: The inner heat zone includes a first sub-heat zone and a second sub-heat zone, wherein the first sub-heat zone is close to the center of the substrate, and the second sub-heat zone is disposed around the first sub-heat zone.

5. The battery drying fixture according to claim 3, characterized in that: The sub-heat zone near the center of the substrate includes at least two inner sub-heat zones, and the at least two inner sub-heat zones are distributed in a rectangular array.

6. The battery drying fixture according to claim 2, characterized in that: The internal heat zone includes at least four internal sub-heat zones, and the at least four internal sub-heat zones are distributed in a rectangular array.

7. The battery drying fixture according to any one of claims 1 to 6, characterized in that: The limiting structure includes a guide block and a contour block, wherein the contour block is arranged on the substrate, and the guide block is located on a side of the contour block away from the substrate; the battery cell contour hole includes a guide section and a limiting section, wherein the limiting section is arranged on the contour block, and the guide section is arranged on the guide block, and the diameter of at least part of the guide section is larger than the diameter of the limiting section.

8. The battery drying fixture according to any one of claims 1 to 6, characterized in that: The battery drying fixture further comprises a flexible protective member, which is fitted into the battery core contour hole, and the hardness of the flexible protective member is less than the hardness of the battery core.

9. The battery drying fixture according to any one of claims 1 to 6, characterized in that: The battery drying fixture further includes a reflector, which surrounds the limiting structure. Along the overlapping direction of the limiting structure and the substrate, the height of the reflector is greater than or equal to the height of the limiting structure.

10. The battery drying fixture according to any one of claims 1 to 6, characterized in that: The battery drying fixture further includes a first moving component, which is disposed on the substrate. The first moving component matches the moving fixture, and the battery drying fixture can be moved on the moving fixture through the first moving component.

11. The battery drying fixture according to any one of claims 1 to 6, characterized in that: The battery drying fixture also includes a first locking component, which is arranged on the substrate. When the battery drying fixture is placed on the mobile fixture, the first locking component can move relative to the substrate and abut against the mobile fixture to limit the movement of the battery drying fixture relative to the mobile fixture.

12. A battery drying device, characterized in that: include: A mobile fixture, the mobile fixture comprising a carrier frame and at least two carrier mechanisms, at least two of the carrier mechanisms being stacked on the carrier frame at intervals; The battery drying fixture according to any one of claims 1 to 11, wherein the battery drying fixture is movably supported on the supporting mechanism.

13. The battery drying device according to claim 12, characterized in that: The carrying mechanism includes a first guide component, the battery drying fixture includes a first moving component matched with the first guide component, and the battery drying fixture moves on the first guide component through the first moving component to enter the moving fixture or exit from the moving fixture.

14. The battery drying device according to claim 12, characterized in that: The battery drying device also includes a first locking component and a first positioning member matching the first locking component, wherein the first locking component is arranged on one of the substrate and the carrier, and the first positioning member is arranged on the other of the substrate and the carrier, and the first locking component cooperates with the first positioning member to limit the movement of the battery drying clamp relative to the carrier.

15. The battery drying device according to claim 12, characterized in that: The battery drying device also includes a detection member and a trigger member, wherein the detection member is arranged on one of the substrate and the carrier, and the trigger member is arranged on the other of the substrate and the carrier; the battery drying clamp moves relative to the carrier until the detection member abuts against the trigger member, and the detection member can generate a control signal to control the movement of the first locking component.

16. A battery drying system, characterized in that: include: The battery drying device according to any one of claims 12 to 15; A disassembly tray device, the disassembly tray device comprising adjacent disassembly tools and parking tools; The parking tool is matched with the mobile fixture so that the mobile fixture can be movably carried on the parking tool; the disassembly tool comprises at least two drawer mechanisms stacked at intervals on the disassembly tray frame, and the battery drying fixture can be movably carried on the drawer mechanism; The disassembly tool can move the battery drying fixture located on the drawer mechanism to the carrier mechanism, or move the battery drying fixture located on the carrier mechanism to the drawer mechanism.

17. The battery drying system according to claim 16, characterized in that: The drawing mechanism includes a second guide component, which corresponds to the first guide component and matches the first movable component of the battery drying fixture; the disassembly tool also includes a second locking component arranged on the disassembly disk frame, and the battery drying fixture also has a second positioning piece matching the second locking component. When the battery drying fixture moves from the first guide component to the second guide component through the first movable component, the second locking component cooperates with the second positioning piece to limit the movement of the battery drying fixture relative to the disassembly tool.

18. The battery drying system according to claim 17, characterized in that: The disassembly tool also includes a push-pull mechanism, which is slidably arranged on the disassembly disk frame and corresponds to the drawer mechanism. The push-pull mechanism can be locked or unlocked with the battery drying fixture, and is used to drive the battery drying fixture to move between the carrying mechanism and the drawer mechanism.

19. The battery drying system according to claim 16, characterized in that: The parking tool includes a third guide component, which extends along the arrangement direction of the parking tool and the disassembly tool; the mobile fixture includes a second mobile component matching the third guide component, and the mobile fixture moves in a direction away from or close to the disassembly tool through the second mobile component and the third guide component.

20. A battery production line, characterized in that: include: The battery drying system according to any one of claims 16 to 19; A transfer system, which is disposed adjacent to the deassembling tray device and is used to transport the battery cells; A transport system is arranged between the transfer system and the disassembly tray device, and is used to transport the battery cells on the transfer system to the battery cell profiling holes of the battery drying fixture, or to transport the battery cells in the battery cell profiling holes to the transport system.

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