Hot pressing plate, hot pressing assembly and hot press

Abstract

The utility model provides a hot pressing plate, a hot pressing assembly and a hot press. A heating part and a flow channel are arranged in the hot pressing plate, and a cooling working medium circulates in the flow channel so as to cool the hot pressing plate; the flow channels comprise the multiple first flow channels and the multiple second flow channels, inlets and outlets of the first flow channels are located in the side face of the hot pressing plate, inlets of the second flow channels are communicated with the first flow channels, outlets of the second flow channels are located in the hot pressing face of the hot pressing plate, and cooling working media circulate in the first flow channels and the second flow channels. Therefore, the maintenance efficiency of the hot pressboard is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot pressing, and specifically, the utility model relates to a hot pressing plate, a hot pressing assembly and a hot press machine. Background Art

[0002] In the process of manufacturing electric cores, the hot pressing operation is a key link to ensure the stable performance and compact structure of the electric cores. At present, the hot pressing device used for pressing electric cores usually adopts two sets of upper and lower hot pressing assemblies, and through hot pressing at a preset temperature, the efficient pressing of the electric cores is realized.

[0003] However, after the hot pressing operation is completed, the residual temperature of the hot pressing plate is often too high. The cooling method of the hot pressing plate mainly depends on natural heat dissipation at room temperature, which not only has low efficiency but also takes a long time, affecting the maintenance efficiency of the hot pressing equipment. Summary of the Utility Model

[0004] An object of the utility model is to provide a new technical solution for a hot pressing plate, a hot pressing assembly and a hot press machine.

[0005] According to the first aspect of the utility model, a hot pressing plate is provided, in which a heating part and a flow channel are arranged, and a cooling working medium is used to flow through the flow channel to cool the hot pressing plate;

[0006] The flow channel includes a plurality of first flow channels and a plurality of second flow channels. The inlet and outlet of the first flow channel are located on the side surface of the hot pressing plate, the inlet of the second flow channel is communicated with the first flow channel, and the outlet of the second flow channel is located on the hot pressing surface of the hot pressing plate.

[0007] Optionally, the hot pressing plate includes:

[0008] A heating plate layer;

[0009] A pressing plate layer, which is arranged on one side of the heating plate layer, and a hot pressing surface is formed on the surface of the pressing plate layer far from the heating plate layer;

[0010] The heating part is arranged on the heating plate layer, and the flow channel is arranged on the pressing plate layer.

[0011] Optionally, a plurality of the first flow channels are arranged at intervals parallel to the hot pressing surface;

[0012] A plurality of the second flow channels are arranged at intervals perpendicular to the hot pressing surface.

[0013] Optionally, a plurality of the second flow channels are divided into multiple rows;

[0014] The inlet of each row of the second flow channels is communicated with one of the first flow channels, and the outlet of each row of the second flow channels is located on the hot pressing surface.

[0015] Optionally, the cross-sectional diameter of the second flow channel is smaller than that of the first flow channel.

[0016] Optionally, the cross-sectional diameter of the first flow channel ranges from 4.0 to 5.0 mm, and the cross-sectional diameter of the second flow channel ranges from 0.2 to 0.3 mm.

[0017] According to a second aspect of the present invention, a hot pressing assembly is provided, and the hot pressing assembly includes the hot pressing plate described in the first aspect.

[0018] Optionally, the hot pressing assembly further includes a first blowing member. The inlet and outlet of the first flow channel in the hot pressing plate are respectively located on different sides of the hot pressing plate. The first blowing member is connected to the inlet of the first flow channel and is used to blow air into the first flow channel, and the outlet of the first flow channel faces an empty area outside the hot pressing assembly.

[0019] Optionally, the first blowing member includes a main pipe and a plurality of secondary pipes. One ends of the plurality of secondary pipes are connected to the main pipe, and the other ends of the plurality of secondary pipes are respectively connected to the plurality of first flow channels in one-to-one correspondence.

[0020] Optionally, a second blowing member is further included, and the second blowing member is used to blow air onto the hot pressing surface to disperse the heat accumulated on the hot pressing surface.

[0021] Optionally, the hot pressing assembly includes a mounting member and a heat insulation plate. The heat insulation plate is connected to the mounting member, and the hot pressing plate is disposed on a side of the heat insulation plate away from the mounting member.

[0022] According to a third aspect of the present invention, a hot press is provided, and the hot press includes a support frame, a hot pressing structure, and a first driving member;

[0023] The hot pressing structure includes a first hot pressing assembly and a second hot pressing assembly, and at least one of the first hot pressing assembly and the second hot pressing assembly adopts the hot pressing assembly described in the second aspect;

[0024] The hot pressing structure is disposed on the support frame, and the first driving member is used to drive at least one of the first hot pressing assembly and the second hot pressing assembly to move in the support frame so as to form a hot pressing space between the first hot pressing assembly and the second hot pressing assembly.

[0025] An embodiment of the present application provides a hot pressing plate, in which a heating part and a flow channel are arranged, and a cooling working medium is used to flow through the flow channel to cool the hot pressing plate; the flow channel includes a plurality of first flow channels and a plurality of second flow channels. The inlet and outlet of the first flow channel are located on the side surface of the hot pressing plate. The inlet of the second flow channel is communicated with the first flow channel, and the outlet of the second flow channel is located on the hot pressing surface of the hot pressing plate. The first flow channel and the second flow channel are used to flow the cooling working medium, so as to accelerate the outflow of the heat inside the hot pressing plate, cool the hot pressing plate, and improve the maintenance efficiency of the hot pressing plate.

[0026] Other features and advantages of the present utility model will become clear from the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings incorporated in and constituting a part of this specification illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model.

[0028] Figure 1 Schematic diagram of a hot pressing plate provided for an embodiment of the present utility model;

[0029] Figure 2 Schematic diagram of a blowing member provided for an embodiment of the present utility model;

[0030] Figure 3 Schematic diagram of a hot pressing assembly provided for an embodiment of the present utility model;

[0031] Figure 4 Schematic diagram of a hot press provided for an embodiment of the present utility model Figure 1 ;

[0032] Figure 5 Schematic diagram of a hot press provided for an embodiment of the present utility model Figure 2 。

[0033] Wherein:

[0034] 1000, hot pressing assembly;

[0035] 100, hot pressing plate; 1, heating plate layer; 11, heating part; 2, pressing plate layer; 21, flow channel; 211, first flow channel; 212, second flow channel; 3, hot pressing surface;

[0036] 200, first blowing member; 201, main pipeline; 202, secondary pipeline; 300, second blowing member; 400, mounting member; 500, pressure sensor; 600, heat insulation plate; 700, guiding block;

[0037] 2000, Support Frame; 2001, Upper Support Plate; 2002, Lower Support Plate; 2003, Support Column; 2004, Guide Column;

[0038] 3000, Hot Press Structure; 3001, Second Hot Press Assembly; 3002, Adjusting Plate; 3004, Lower Hot Press Plate; 3005, First Hot Press Assembly;

[0039] 4001, First Driving Member; 4002, Second Driving Member; 4003, Third Driving Member. Detailed Embodiment

[0040] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0041] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0042] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0043] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0044] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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 communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0045] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] During the use of the battery, the battery cell may have safety hazards such as expansion or distortion due to the continuous internal chemical reaction. The hot pressing of the battery cell can closely bond the electrode plate and the separator in the battery cell. On the one hand, it can prevent the battery cell from expanding, and on the other hand, it can improve the adhesion effect between the electrode plate and the separator, thereby increasing the energy density and capacity of the battery cell.

[0047] Referring to Figure 1 , an embodiment of the present application provides a hot pressing plate for hot pressing a battery cell. A heating part 11 and a flow channel 21 are arranged in the hot pressing plate. A cooling working medium is used to flow through the flow channel 21 to cool the hot pressing plate;

[0048] The flow channel 21 includes a plurality of first flow channels 211 and a plurality of second flow channels 212. The inlet and outlet of the first flow channel 211 are located on the side surface of the hot pressing plate. The inlet of the second flow channel 212 is communicated with the first flow channel 211, and the outlet of the second flow channel 212 is located on the hot pressing surface 3 of the hot pressing plate.

[0049] In this embodiment, since the temperature of the hot pressing plate will increase significantly when heated by the heating part 11, and a flow channel 21 is arranged in the hot pressing plate. When the cooling working medium flows through the flow channel 21, the hot pressing plate can be cooled by the cooling working medium, so that the temperature of the hot pressing plate is reduced to cool and lower the temperature of the hot pressing plate.

[0050] In this embodiment, the cooling working medium flows into the first flow channel 211 from the side surface of the hot pressing plate, and drives the heat to flow out from the outlet on the side surface of the hot pressing plate and the outlet on the surface of the hot pressing plate through the first flow channel 211 and the second flow channel 212 to realize the cooling of the hot pressing plate.

[0051] In one embodiment, the cooling working medium flows into the flow channel 21 from the side surface of the hot pressing plate, turns in the flow channel 21, and then flows out of the flow channel 21 from the hot pressing surface 3, which improves the heat exchange efficiency of the cooling working medium in the flow channel 21 and ensures the cooling effect of the hot pressing plate.

[0052] In one embodiment, after the hot press plate completes the hot pressing operation on the battery cell, cooling medium such as cooling gas or cooling liquid can be conveyed in the flow channel 21 of the hot press plate to accelerate the outflow of heat inside the hot press plate, rapidly reduce the temperature of the hot press plate, improve the maintenance efficiency of the hot press plate after hot pressing, and ensure the service life of the hot press plate.

[0053] In one embodiment, referring to Figure 1 , the hot press plate includes:

[0054] A heating plate layer 1;

[0055] A pressing plate layer 2, which is arranged on one side of the heating plate layer 1, and a hot pressing surface 3 is formed on the surface of the pressing plate layer 2 away from the heating plate layer 1;

[0056] A heating part 11 is arranged on the heating plate layer 1, and the flow channel 21 is arranged on the pressing plate layer 2.

[0057] In this embodiment, referring to Figure 1 , the flow channel 21 is arranged in the pressing plate layer 2, the inlet of the flow channel 21 is located on the side surface of the pressing plate layer 2, and the outlet of the flow channel 21 is located on other side surfaces of the pressing plate layer 2 and the hot pressing surface 3.

[0058] Since the temperature of the pressing plate layer 2 will increase significantly during the process of conducting the heat of the heating plate layer 1, and the flow channel 21 is arranged in the pressing plate layer 2, when the cooling working medium flows through the flow channel 21, the pressing plate layer 2 can be cooled by the cooling working medium, so that the temperature of the pressing plate layer 2 is reduced to cool and lower the temperature of the hot press plate.

[0059] In this embodiment, heating parts 11 such as heating tubes or heating wires can be arranged in the heating plate layer 1, so that when the hot press plate hot presses the battery cell, the heating part 11 is used to provide heat for the hot press plate to ensure that the hot press plate provides the heat for hot pressing the battery cell.

[0060] In one embodiment, the pressing plate layer 2 can be connected to the heating plate layer 1 to form a double-layer structure of the hot press plate, so as to form the hot press plate by combining the split pressing plate layer 2 and the heating plate layer 1, which is convenient for the independent molding of the pressing plate layer 2 and the heating plate layer 1; in another embodiment, the pressing plate layer 2 can be integrally connected to the heating plate layer 1 to obtain an integrally formed hot press plate to ensure the structural integrity of the hot press plate.

[0061] In one embodiment, the hot press plate can directly press the battery cell through the hot pressing surface 3, and the pressing plate layer 2 can transfer the heat generated by the heating plate layer 1 to the battery cell. For example, the pressing plate layer 2 is a heat-conducting layer such as a metal layer or a silicon carbide layer to ensure the stability of the battery cell under pressure and heat.

[0062] In one embodiment, referring to Figure 1, a plurality of first flow channels 211 are arranged in parallel at intervals with respect to the hot pressing surface 3;

[0063] A plurality of said second flow channels 212 are arranged at intervals perpendicular to the hot pressing surface.

[0064] In this embodiment, a plurality of first flow channels 211 can be arranged in parallel in the pressing plate layer 2, and are arranged at equal intervals between the plurality of first flow channels 211, so that the plurality of first flow channels 211 are evenly distributed in the pressing plate layer 2. More cooling working fluid can be introduced into the plurality of first flow channels 211. On the basis of improving the cooling efficiency of the hot pressing plate, the balance of the hot pressing plate cooling is ensured; moreover, the cooling working fluid flows in from the inlet of the first flow channel 211, turns in the first flow channel 211 and then flows into the second flow channel 212, improving the heat exchange efficiency of the cooling working fluid in the first flow channel 211.

[0065] In another embodiment, the flow channel 21 includes a first flow channel 211. A first flow channel 211 extends in the pressing plate layer 2 along a direction parallel to the hot pressing surface 3, and the width of a first flow channel 211 reaches more than 50% of the width of the pressing plate layer 2 to ensure the cooling efficiency of the cooling working fluid in the flow channel 21 for the hot pressing plate.

[0066] In one embodiment, refer to Figure 1 , a plurality of second flow channels 212 are divided into multiple rows;

[0067] The inlet of each row of second flow channels 212 is communicated with a first flow channel 211, and the outlet of each row of second flow channels 212 is located on the hot pressing surface 3.

[0068] In this embodiment, the first flow channel 211 can extend along Figure 1 the left - right direction in Figure 1 One row of laterally arranged second flow channels 212 is shown in

[0069] Each row of second flow channels 212 includes a plurality of second flow channels 212 extending vertically. The plurality of second flow channels 212 are parallel to each other and are spaced apart in sequence. The inlets of the plurality of second flow channels 212 are communicated with the first flow channel 211, and the outlets of the plurality of second flow channels 212 are located on the hot pressing surface 3, so that the second flow channels 212 in each row of second flow channels 212 serve as heat dissipation holes of the first flow channel 211, accelerating the dissipation of heat on the heat dissipation surface of the hot pressing plate and improving the heat dissipation efficiency of the hot pressing plate.

[0070] One end of multiple branch channels forms the inlet of the first channel 211, the other ends of the multiple branch channels are connected to the middle of the main channel, the end of the main channel forms the outlet of the first channel 211, and the direction in which the cooling working fluid flows out of the outlet in the first channel 211 faces the vacant area outside the hot pressing plate. For example, the air flow in the first channel 211 flows out of the outlet and then faces the area where no other components are arranged on one side of the hot pressing plate. The vacant area refers to the area where no other components or devices are arranged for the equipment including the hot pressing plate, the area where other components or devices are arranged but are less affected by heat, and other areas that have no impact or damage on the equipment or operators. This is to avoid the influence and damage of the cooling working fluid on other components while increasing the flow area of the first channel 211 and improving the cooling efficiency of the hot pressing plate.

[0071] In one embodiment, both the inlet and the outlet of the first channel 211 are located on the side surface of the pressing plate layer 2. The inlet and the outlet of the first channel 211 can be located on the same side surface of the pressing plate layer 2 or on different side surfaces of the pressing plate layer 2.

[0072] In one embodiment, the first channel 211 extends linearly in the pressing plate layer 2 so that the inlet and the outlet of the first channel 211 are respectively located on two opposite side surfaces of the pressing plate layer 2. At the same time, the inlet of the second channel 212 is connected to one first channel 211, and the outlet of the second channel 212 can also be on the hot pressing surface 3 to form at least part of the outlet of the channel 21, and the cooling working fluid is output through both the side surface and the bottom surface of the pressing plate layer 2 for cooling.

[0073] In another embodiment, the first channel 211 extends in a broken line in the pressing plate layer 2, and the inlet and the outlet of the first channel 211 are respectively located on two adjacent side surfaces of the pressing plate layer 2, increasing the flow area of the cooling working fluid in the first channel 211 in the pressing plate layer 2.

[0074] In one embodiment, the cross-sectional diameter of the second channel 212 is smaller than the cross-sectional diameter of the first channel 211.

[0075] In this embodiment, the first channel 211 can be used as the main channel in the hot pressing plate to provide most of the cooling working fluid that can flow in the pressing plate layer 2. The second channel 212 can be used as the secondary channel in the hot pressing plate. The number of the second channels 212 is greater than the number of the first channels 211 to divide the cooling working fluid in the first channel 211 and improve the distribution density of the channels in the hot pressing plate.

[0076] In one embodiment, the range of the cross-sectional diameter of the first channel 211 is 4.0 - 5.0 mm.

[0077] In this embodiment, the cross-sectional area of the first flow channel 211 can be circular to increase the contact area between the cooling working fluid in the first flow channel 211 and the pressing plate layer 2. When the diameter of the cross-sectional area of the first flow channel 211 is in the range of 4.0 - 5.0 mm, for example, the diameter of the cross-sectional area of the first flow channel 211 is 4.2 mm, 4.5 mm or 4.8 mm, it is possible to maintain the flow rate of the cooling working fluid in the first flow channel 211 and improve the cooling efficiency of the hot pressing plate, while ensuring the structural strength of the hot pressing plate.

[0078] In one embodiment, the diameter range of the cross-sectional area of the second flow channel 212 is 0.2 - 0.3 mm.

[0079] In this embodiment, the second flow channel 212 provides a plurality of heat dissipation holes in the pressing plate layer 2 to ensure the cooling effect of the hot pressing plate. At the same time, the second flow channel 212 with a diameter range of 0.2 - 0.3 mm has a relatively small impact on the structural strength of the hot pressing plate, and can ensure the hot pressing effect of the hot pressing plate while maintaining the structural strength of the hot pressing plate.

[0080] In one embodiment, see Figure 1 , the hot pressing plate further includes a contact layer, and the contact layer is attached to the hot pressing surface 3.

[0081] In this embodiment, the hot pressing surface 3 is used to hot press the battery cell. In order to avoid hard contact between the hot pressing surface 3 and the battery cell, a contact layer can be attached to the hot pressing surface 3, and the contact layer can prevent the battery cell from adhering to the hot pressing plate during the hot pressing process, ensuring the integrity of the battery cell after hot pressing; and the contact layer can ensure good thermal contact between the hot pressing plate and the battery cell, so that the battery cell can be quickly and evenly heated to the required temperature, helping the materials inside the battery cell to undergo expected changes at high temperature to meet the requirements of the battery cell production process.

[0082] At the same time, the contact layer can also effectively conduct pressure, so that the battery cell can be evenly stressed when under pressure, helping the materials inside the battery cell to better and tightly combine, and improving the overall performance of the battery cell.

[0083] In one embodiment, a plurality of air holes are provided on the contact layer, and the plurality of air holes are arranged in one-to-one correspondence with the outlets of the plurality of second flow channels 212.

[0084] In this embodiment, the outlets of the plurality of second flow channels 212 are located on the hot pressing surface 3 to facilitate the rapid dissipation of the heat accumulated on the hot pressing surface 3; and the plurality of air holes on the contact layer are arranged in one-to-one correspondence with the outlets of the plurality of second flow channels 212, which can facilitate the rapid output of the cooling working fluid in the second flow channels 212 and ensure the heat dissipation efficiency of the hot pressing surface 3.

[0085] In one embodiment, a temperature measuring component is provided in the pressing plate layer 2, and the temperature measuring component is used to measure the temperature of the hot pressing plate.

[0086] In this embodiment, the hot pressing plate can directly press the battery cell through the hot pressing surface 3, and the pressing plate layer 2 can transfer the heat generated by the heating plate layer 1 to the battery cell. The temperature measuring component can indirectly measure the temperature of the hot pressing plate by detecting the transferred heat, so as to achieve the purpose of controlling the temperature of the hot pressing plate.

[0087] An embodiment of the present application provides a hot pressing assembly, and the hot pressing assembly includes the above-mentioned hot pressing plate 100.

[0088] In this embodiment, the hot pressing assembly can directly press the battery cell through the hot pressing plate 100, and the hot pressing plate 100 includes a heating plate layer 1, in which a heating part 11 is arranged; a pressing plate layer 2, which is arranged on one side of the heating plate layer 1, and a hot pressing surface 3 is formed on the surface of the pressing plate layer 2 away from the heating plate layer 1; a flow channel 21 is arranged in the pressing plate layer 2, and a cooling working medium is used to flow through the flow channel 21 to cool the hot pressing plate, improving the maintenance efficiency of the hot pressing plate and ensuring the hot pressing efficiency of the hot pressing assembly.

[0089] In one embodiment, referring to Figure 2 and Figure 3 , the hot pressing assembly further includes a first blowing member 200. The inlet and outlet of the first flow channel 211 are respectively located on different sides of the hot pressing plate 100. The first blowing member 200 is communicated with the inlet of the first flow channel 211 and is used to blow air into the first flow channel 211, and the outlet of the first flow channel 211 faces the vacant area outside the hot pressing assembly.

[0090] In this embodiment, the first blowing member 200 can be located on the side of the hot pressing plate 100. The cooling working medium is input into the hot pressing plate 100 through the first blowing member 200, so that the cooling working medium drives the heat to flow out after passing through the outlet of the first flow channel 211 and the outlet of the second flow channel 212.

[0091] The first blowing member 200 sends the cooling working medium into the first flow channel 211 from the inlet on one side of the hot pressing plate. The cooling working medium flows along the first flow channel 211 and the second flow channel 212, driving most of the heat in the hot pressing plate to flow out from the outlet on the other side of the hot pressing plate, and at the same time driving a small part of the heat to flow out from the outlet of the second flow channel 212 on the surface of the hot pressing plate after passing through the second flow channel 212, so as to ensure the cooling efficiency of the cooling working medium in the flow channel 21 for the hot pressing plate.

[0092] In this embodiment, when the hot pressing assembly presses the battery cell through the hot pressing plate 100, the outlet of the first flow channel 211 can be arranged on the side of the hot pressing plate close to the vacant area. The vacant area can be an area on the side of the hot pressing assembly where no components are arranged or other areas that are harmless to the hot pressing equipment and operators. The outlet of the first flow channel 211 faces the vacant area outside the hot pressing assembly, which can avoid the influence of the working medium flowing out of the outlet of the first flow channel 211 on the hot pressing assembly and other components.

[0093] In one embodiment, refer to Figure 2 , the first blowing member 200 includes a main pipe 201 and a plurality of secondary pipes 202. One end of the plurality of secondary pipes 202 communicates with the main pipe 201, and the other ends of the plurality of secondary pipes 202 communicate with a plurality of first flow channels 211 in one-to-one correspondence.

[0094] In this embodiment, when the plurality of first flow channels 211 are arranged at intervals parallel to the hot pressing surface 3, in order to ensure the uniformity of the cooling working fluid introduced into each first flow channel 211, one secondary pipe 202 can communicate with one first flow channel 211 correspondingly, so as to facilitate the delivery of the cooling working fluid to the first flow channel 211 through the secondary pipe 202.

[0095] In one embodiment, refer to Figure 3 , the hot pressing assembly further includes a second blowing member 300, and the second blowing member 300 is used to blow air towards the hot pressing surface 3 to disperse the heat accumulated on the hot pressing surface 3.

[0096] In this embodiment, the outlet of the second flow channel 212 is located on the hot pressing surface 3. By blowing air towards the hot pressing surface 3 of the hot pressing plate through the second blowing member 300 on the side of the hot pressing plate, the heat dissipation efficiency of the cooling working fluid at the outlet of the second flow channel 212 can be improved, the heat dissipation on the hot pressing surface 3 can be accelerated, and the rapid cooling of the hot pressing plate can be ensured; the second blowing member 300 can blow air towards the hot pressing surface 3 along a direction parallel to the hot pressing surface 3, or can also blow air towards the hot pressing surface 3 along a direction at a certain angle to the hot pressing surface 3; moreover, the blowing direction of the second blowing member 300 can be the same as the air outlet direction of the first flow channel 211, so as to drive the heat accumulated on the surface area of the hot pressing surface 3 to flow to the vacant area outside the hot pressing assembly, avoiding the influence of the air flow blown out by the second blowing member 300 on the hot pressing assembly and other components.

[0097] In one embodiment, when multiple groups of second flow channels 212 are arranged at intervals perpendicular to the hot pressing surface 3, the second blowing member 300 can also include a second main pipe and a plurality of second secondary pipes, and each second secondary pipe corresponds to the outlets of a row of second flow channels 212 to ensure the uniformity of the output of the cooling working fluid at the outlets of each group of second flow channels 212.

[0098] In one embodiment, the hot pressing assembly includes a mounting member 400 and a heat insulation plate 600. The heat insulation plate 600 is connected to the mounting member 400, and the hot pressing plate 100 is arranged on the side of the heat insulation plate away from the mounting member 400, that is, the heat generated by the hot pressing plate 100 is isolated from the mounting member 400. The heat insulation plate can prevent the heat of the hot pressing plate 100 from being transferred to the mounting member 400, avoid the thermal deformation of the mounting member 400, and ensure the structural stability of the mounting member in the hot pressing assembly.

[0099] In one embodiment, refer to Figure 3, the hot pressing assembly further includes a pressure sensor 500, and the mounting member 400 is a movable mounting plate;

[0100] The pressure sensor 500, the heat insulation plate 600, and the hot pressing plate 100 are sequentially arranged on the movable mounting plate.

[0101] In this embodiment, when the hot pressing plate 100 hot presses the battery cell, the hot pressing plate 100 needs to be able to move flexibly, so as to facilitate the hot pressing plate 100 to approach the battery cell and hot press the battery cell, and move away from the battery cell after the hot pressing is completed; the movable mounting plate can drive the hot pressing plate 100 to move, and the pressure sensor 500 can monitor the pressing force during the hot pressing process of the hot pressing plate 100, and the heat insulation plate 600 can prevent the heat generated by the hot pressing plate 100 from being transferred to other parts of the hot pressing assembly, ensuring the hot pressing stability of the hot pressing assembly.

[0102] In one embodiment, see Figure 4 and Figure 5 , the mounting member can be the adjusting plate 3002;

[0103] The heat insulation plate 600 and the hot pressing plate 100 are sequentially arranged on the adjusting plate 3002, and the hot pressing plate 100 is fixed on the adjusting plate 3002 through the heat insulation plate 600, ensuring the setting stability of the hot pressing plate 100.

[0104] See Figure 4 and Figure 5 , the embodiment of the present application provides a hot press, which includes a support frame 2000, a hot pressing structure 3000, and a first driving member 4001;

[0105] The hot pressing structure 3000 includes a first hot pressing assembly 3005 and a second hot pressing assembly 3001, and at least one of the first hot pressing assembly and the second hot pressing assembly adopts the above-mentioned hot pressing assembly 1000;

[0106] The hot pressing structure 3000 is arranged on the support frame 2000, and the first driving member 4001 is fixedly arranged on the support frame 2000, and is used to drive at least one of the first hot pressing assembly and the second hot pressing assembly to move in the support frame 2000, so as to form a hot pressing space between the first hot pressing assembly and the second hot pressing assembly, and the hot pressing space is used to accommodate the battery cell.

[0107] In one embodiment, see Figure 5, the support frame 2000 includes an upper support plate 2001, a lower support plate 2002, support columns 2003 and guide columns 2004. The support columns 2003 are arranged between the upper support plate 2001 and the lower support plate 2002, and the guide columns 2004 are arranged on the support columns 2003. The second hot pressing assembly is fixedly connected to the lower support plate 2002, and the first hot pressing assembly is slidably connected to the guide columns 2004 through guide blocks 700. The first driving member 4001 drives the first hot pressing assembly to approach or move away from the second hot pressing assembly to hot press the battery cell.

[0108] In this embodiment, refer to Figure 5 , in this embodiment, the first hot pressing assembly uses the above-mentioned hot pressing assembly 1000 to form the upper hot pressing assembly. The first hot pressing assembly 3005 includes, from top to bottom, a mounting member 400 (the mounting member is a movable mounting plate), a pressure sensor 500, a heat insulation plate 600, and a hot pressing plate 100; the second hot pressing assembly 3001 includes an adjusting plate 3002, a heat insulation plate 600, and a lower hot pressing plate 3004 to form the lower hot pressing assembly. The adjusting plate 3002, the heat insulation plate 600, and the lower hot pressing plate 3004 are sequentially arranged on the lower support plate 2002 from bottom to top. The lower hot pressing plate 3004 includes a lower heating layer and a lower pressing plate layer. The lower pressing plate layer includes a movable heating block in the middle and pressing blocks on both sides. Thermocouples are arranged in both the movable heating block and the pressing blocks to monitor the hot pressing temperature of the lower hot pressing plate 3004.

[0109] Refer to Figure 5 , in this embodiment, the hot press further includes a second driving member 4002 and a third driving member 4003. The first driving member 4001 is connected to the first hot pressing assembly and is used to drive the first hot pressing assembly to move up and down. The second driving member 4002 is connected to the movable heating block and is used to drive the movable heating block to move up and down to facilitate the blanking of the battery cell after hot pressing; the driving direction of the third driving member 4003 is opposite to that of the first driving member, and the driving end is connected to the first hot pressing assembly and is used to offset the weight of the first hot pressing assembly.

[0110] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A hot pressing plate, characterized in that: The hot pressing plate is provided with a heating portion (11) and a flow channel (21), and the flow channel (21) is used to flow a cooling medium to cool the hot pressing plate; The flow channel (21) comprises a plurality of first flow channels (211) and a plurality of second flow channels (212), wherein the inlet and outlet of the first flow channel (211) are located on the side of the hot pressing plate, the inlet of the second flow channel (212) is connected to the first flow channel (211), and the outlet of the second flow channel (212) is located on the hot pressing surface (3) of the hot pressing plate.

2. The hot pressing plate according to claim 1, characterized in that: The hot pressing plate comprises: Heating the plate layer (1); A pressing plate layer (2), the pressing plate layer (2) being arranged on one side of the heating plate layer (1), and forming the hot pressing surface (3) on a surface of the pressing plate layer (2) away from the heating plate layer (1); The heating portion (11) is arranged on the heating plate layer (1), and the flow channel (21) is arranged on the pressing plate layer (2).

3. The hot pressing plate according to claim 1, characterized in that: A plurality of the first flow channels (211) are arranged in parallel with the hot pressing surface (3) at intervals; A plurality of the second flow channels (212) are arranged perpendicularly to the hot pressing surface and at intervals.

4. The hot pressing plate according to claim 3, characterized in that: The plurality of second flow channels (212) are divided into a plurality of rows; The inlet of each row of the second flow channels (212) is communicated with one of the first flow channels (211), and the outlet of each row of the second flow channels (212) is located on the hot pressing surface.

5. The hot pressing plate according to claim 1, characterized in that: The flow channel cross-sectional diameter of the second flow channel (212) is smaller than the flow channel cross-sectional diameter of the first flow channel (211).

6. The hot pressing plate according to claim 1, characterized in that: The diameter of the cross section of the first flow channel (211) is in the range of 4.0-5.0 mm; the diameter of the cross section of the second flow channel (212) is in the range of 0.2-0.3 mm.

7. A hot pressing assembly, characterized in that: The hot pressing plate (100) comprises any one of claims 1 to 6.

8. The hot pressing assembly according to claim 7, characterized in that: It also includes a first blowing member (200), wherein the inlet and outlet of the first flow channel (211) in the hot pressing plate (100) are respectively located on different sides of the hot pressing plate (100), the first blowing member (200) is connected to the inlet of the first flow channel (211) and is used to blow air into the first flow channel (211), and the outlet of the first flow channel (211) faces an empty area outside the hot pressing assembly.

9. The hot pressing assembly according to claim 8, characterized in that: The first blowing member (200) comprises a main pipe (201) and a plurality of secondary pipes (202), one end of the plurality of secondary pipes (202) being connected to the main pipe (201), and the other end of the plurality of secondary pipes (202) being connected to a plurality of first flow channels (211) in a one-to-one correspondence.

10. The hot pressing assembly according to claim 7, characterized in that: It also comprises a second blowing member (300), wherein the second blowing member (300) is used to blow air toward the hot pressing surface (3) to dissipate the heat accumulated on the hot pressing surface (3).

11. The hot pressing assembly according to claim 7, characterized in that: The hot pressing assembly comprises a mounting member (400) and a heat insulating plate (600), wherein the heat insulating plate (600) is connected to the mounting member (400), and the hot pressing plate (100) is arranged on a side of the heat insulating plate (600) away from the mounting member (400).

12. A hot press, characterized in that: It comprises a supporting frame (2000), a hot pressing structure (3000) and a first driving member (4001); The hot pressing structure (3000) comprises a first hot pressing assembly (3005) and a second hot pressing assembly (3001), and at least one of the first hot pressing assembly and the second hot pressing assembly adopts the hot pressing assembly (1000) according to any one of claims 7 to 11; The hot pressing structure (3000) is arranged on the supporting frame (2000), and the first driving member (4001) is used to drive at least one of the first hot pressing component and the second hot pressing component to move in the supporting frame (2000) to form a hot pressing space between the first hot pressing component and the second hot pressing component.

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