Hot pressing mechanism and hot pressing equipment

Abstract

The utility model discloses a hot-pressing mechanism and hot-pressing equipment, and relates to the technical field of battery processing, the hot-pressing mechanism is used for hot-pressing a battery cell, the hot-pressing mechanism comprises two pressing plate assemblies, the two pressing plate assemblies are oppositely arranged, each pressing plate assembly is internally provided with an installation cavity and a fixing groove communicated with the installation cavity, and the fixing grooves are communicated with the installation cavities. A first inclined surface part is arranged on the side wall of the fixing groove; the heating assembly is arranged in the mounting cavity, and one end of the heating assembly extends into the fixing groove; the clamping piece is in sliding fit with the first inclined surface part; the fastening piece is arranged on the pressing plate assembly and is in driving connection with the clamping piece, so that the clamping piece is driven to slide along the first inclined surface part and is matched with the fixing groove to clamp or release the heating assembly; according to the technical scheme provided by the utility model, the universality of the hot-pressing mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, and particularly relates to a hot pressing mechanism and a hot pressing device. Background Art

[0002] Technological progress has promoted the increasingly widespread application of power batteries in fields such as electric vehicles. Among them, the battery cell, as a key component of the power battery, plays a core role. The production process of the battery cell involves a key process - the hot pressing process. This step heats and presses the battery cell to ensure that the separator and the electrode plate can be effectively bonded and fixed.

[0003] The current hot pressing mechanism is generally only applicable to battery cells under specific heating conditions and is difficult to adapt to battery cells of different models. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a hot pressing mechanism and a hot pressing device, aiming to improve the versatility of the hot pressing mechanism.

[0005] To achieve the above purpose, a hot pressing mechanism proposed by the utility model is used for hot pressing a battery cell. The hot pressing mechanism includes:

[0006] Press plate assemblies, there are two of them, and the two press plate assemblies are arranged oppositely. An installation cavity and a fixing groove communicating with the installation cavity are arranged inside the press plate assembly, and a first inclined surface portion is arranged on the side wall of the fixing groove;

[0007] Heating component, arranged in the installation cavity, and one end of the heating component extends into the fixing groove;

[0008] Clamping member, slidingly matched with the first inclined surface portion;

[0009] Fastening member, arranged on the press plate assembly and drivingly connected with the clamping member to drive the clamping member to slide along the first inclined surface portion and cooperate with the fixing groove to clamp or release the heating component.

[0010] In an embodiment, a connection hole communicating with the fixing groove is arranged on the press plate assembly, and one end of the fastening member passes through the connection hole and is threadedly connected with the clamping member.

[0011] In an embodiment, the clamping member has a clamping portion, and the clamping portion fits against the side wall of the heating component.

[0012] In an embodiment, the heating component includes:

[0013] Magnetic conductive member, having a fixed end and a connection end arranged at the fixed end, and the fixed end extends into the fixing groove;

[0014] Coil, wound around the connection end.

[0015] In one embodiment, a plurality of connection ends are provided, and the plurality of connection ends are arranged in a matrix.

[0016] In one embodiment, the two pressing plate assemblies include an upper pressing plate assembly disposed above and a lower pressing plate assembly disposed below. The lower pressing plate assembly includes:

[0017] A support base provided with the installation cavity and the fixing groove;

[0018] A first support plate disposed on the top of the support base. There are two first support plates, and the two first support plates are arranged side by side and spaced apart to support the edge of the battery cell;

[0019] A second support plate disposed between the two first support plates, and the second support plate is used to support the middle part of the battery cell;

[0020] A driving device disposed on the support base and drivingly connected to the second support plate to drive the second support plate to move up and down.

[0021] In one embodiment, the driving device includes:

[0022] Two telescopic members are provided. The two telescopic members are respectively disposed on opposite sides of the support base. The telescopic member has a fixed end and a telescopic end. The fixed end is connected to the support base, and the telescopic end telescopically moves in the vertical direction;

[0023] A connecting member is disposed on the telescopic end and connected to the second support plate.

[0024] In one embodiment, the first support plate is detachably connected to the support base; and / or, the second support plate is detachably connected to the connecting member.

[0025] In one embodiment, the first support plate and the second support plate are made of non-metallic materials.

[0026] The present utility model further provides a hot pressing device, including the above-mentioned hot pressing mechanism.

[0027] Compared with the prior art, in the technical solution of the present utility model, the hot pressing mechanism includes a pressing plate assembly. There are two pressing plate assemblies, which are spaced apart in the height direction. The two pressing plate assemblies can approach each other to squeeze the battery cell. An installation cavity is provided in the pressing plate assembly. A fixing groove is provided on one side of the installation cavity. The side wall of the fixing groove is provided with a first inclined surface portion. A heating component is provided in the installation cavity. The heating component can heat the battery cell. One end of the heating component extends into the fixing groove. A clamping member is provided in the fixing groove. The clamping member slides with the first inclined surface portion. A fastening member is further provided on the pressing plate assembly. The fastening member is drivingly connected to the clamping member and can drive the clamping member to slide along the first inclined surface, so as to adjust the distance between the clamping member and the inner wall of the fixing groove, and further realize clamping or releasing the heating component. In this solution, the setting of the clamping member and the fastening member facilitates the fixing and disassembly of the heating component in the pressing plate assembly. In addition, by adjusting the sliding of the clamping member on the first inclined surface portion, it can be adapted to install heating components of different sizes. In this way, the hot pressing mechanism can replace different heating components according to the specifications of the hot pressed battery cells, improving the versatility of the hot pressing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0029] Figure 1 is a schematic structural diagram of the hot pressing mechanism provided by the present utility model;

[0030] Figure 2 is a schematic cross-sectional structural diagram of the hot pressing mechanism provided by the present utility model along the length direction;

[0031] Figure 3 is a schematic cross-sectional structural diagram of the hot pressing mechanism provided by the present utility model along the width direction;

[0032] Figure 4 is Figure 3 a partial enlarged view of part A in

[0033] Explanation of the reference numerals in the drawings:

[0034] 100, pressing plate assembly; 110, installation cavity; 120, fixing groove; 130, inclined surface portion; 140, support seat; 150, first support plate; 160, second support plate; 170, driving device; 171, telescopic member; 172, connecting member; 200, heating component; 210, magnetic conductive member; 220, coil; 300, clamping member; 400, fastening member.

[0035] The realization, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions such as "first" and "second" involved in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] In order to enable the hot pressing mechanism to adapt to the hot pressing of different specifications of battery cells, the present technical solution proposes a hot pressing mechanism for hot pressing battery cells. The hot pressing mechanism includes:

[0040] Two pressing plate assemblies 100 are provided and are arranged opposite to each other. An installation cavity 110 and a fixing groove 120 communicating with the installation cavity 110 are arranged inside the pressing plate assembly 100, and a first inclined surface portion 130 is provided on the side wall of the fixing groove 120;

[0041] A heating component 200 is arranged in the installation cavity 110, and one end of the heating component 200 extends into the fixing groove 120;

[0042] A clamping member 300 is slidably matched with the first inclined surface portion 130;

[0043] A fastener 400 is provided on the pressing plate assembly 100 and is drivingly connected to the clamping member 300 to drive the clamping member 300 to slide along the first inclined surface portion 130 and cooperate with the fixing groove 120 to clamp or release the heating component 200.

[0044] Compared with the prior art, in the technical solution of the present utility model, the hot pressing mechanism includes a pressing plate assembly 100. There are two pressing plate assemblies 100, and the two pressing plate assemblies 100 are spaced apart in the height direction. The two pressing plate assemblies 100 can approach each other to squeeze the battery cell. An installation cavity 110 is provided in the pressing plate assembly 100. One side of the installation cavity 110 is provided with a fixing groove 120. The side wall of the fixing groove 120 is provided with a first inclined surface portion 130. A heating component 200 is provided in the installation cavity 110. The heating component 200 can heat the battery cell. One end of the heating component 200 extends into the fixing groove 120. A clamping member 300 is provided in the fixing groove 120. The clamping member 300 slides on the first inclined surface portion 130. A fastener 400 is further provided on the pressing plate assembly 100. The fastener 400 is drivingly connected to the clamping member 300 and can drive the clamping member 300 to slide along the first inclined surface, so that the distance between the clamping member 300 and the inner wall of the fixing groove 120 can be adjusted, thereby realizing clamping or releasing the heating component 200; in this solution, the setting of the clamping member 300 and the fastener 400 facilitates the fixing and disassembly of the heating component 200 in the pressing plate assembly 100. In addition, by adjusting the clamping member 300 to slide on the first inclined surface portion 130, the installation of heating components 200 of different sizes can be adapted. In this way, the hot pressing mechanism can replace different heating components 200 according to the specifications of the battery cells to be hot pressed, improving the versatility of the hot pressing assembly.

[0045] Such as Figures 1 to 4In the present embodiment, the hot pressing mechanism is used for hot pressing of the battery core. Two pressing plate assemblies 100 are provided. The two pressing plate assemblies 100 are arranged opposite to each other in the vertical direction. The pressing plate assembly 100 is a square structure. Both pressing plate assemblies 100 are provided with an installation cavity 110. A fixing groove 120 is provided on one side of the installation cavity 110. The fixing groove 120 is arranged in the installation cavity 110 at a position away from the opposite side pressing plate assembly 100. In addition, a side wall of one side of the fixing groove 120 is inclined to form a first inclined portion 130. In addition, a heating component 200 is also provided in the first installation cavity 110. The heating component 200 can be a heating wire or an electromagnetic coil 220. One end of the heating component 200 extends into the fixing groove 120. In addition, the first A clamping member 300 is slidably provided on the inclined portion 130, and the clamping member 300 can be a block-shaped structure. The clamping member 300 can adjust the width of the fixing groove 120 by sliding on the first inclined portion 130. In addition, a fastener 400 is provided on the pressure plate assembly 100, and the fastener 400 can drive the clamping member 300 to slide on the first inclined portion 130, so that the width of the fixing groove 120 can be adjusted to achieve clamping, fixing or releasing the heating component 200. This not only facilitates the disassembly and assembly of the heating component 200, but also, since the width of the fixing groove 120 is adjustable, heating components 200 of different specifications can be installed on the pressure plate assembly 100, thereby meeting the hot pressing requirements of battery cells of different specifications and enhancing the versatility of the hot pressing mechanism.

[0046] like Figure 4 In one embodiment of the utility model, the pressure plate assembly 100 is provided with a connection hole connected to the fixing groove 120 , and one end of the fastener 400 passes through the connection hole and is threadedly connected to the clamping member 300 . In the present embodiment, the connecting hole is arranged on a side of the pressure plate assembly 100 away from the other pressure plate assembly 100, and the connecting hole extends into the fixing groove 120, the connecting hole is an oblong hole, the fastener 400 is a bolt, and a threaded hole corresponding to the position of the connecting hole is opened on the clamping member 300, and one end of the fastener 400 passes through the threaded hole on the clamping member 300 in the area of ​​the connecting hole and is threadedly connected. In this way, the clamping member 300 can be driven to slide on the first inclined portion 130 by screwing the fastener 400. During this process, the fastener 400 and the clamping member 300 move together. After the clamping member 300 slides to abut against the heating component 200, the fastener 400 can limit the clamping member 300 from being separated from the heating component 200, thereby clamping the heating component 200. The technical solution provided in this embodiment can simplify the connection structure between the clamping member 300 and the fastener 400, and can also improve the accuracy of position adjustment of the clamping member 300.

[0047] In an embodiment of the present utility model, the clamping member 300 has a clamping portion which fits against the side wall of the heating component 200. The clamping portion is arranged on the side of the clamping member 300 facing the heating component 200. When fixing the heating component 200, the clamping portion fits against the side wall of the heating component 200. In this way, the local stress on the clamping member 300 and the heating component 200 can be reduced, and the friction between the clamping member 300 and the heating component 200 can also be increased, improving the fixing stability of the heating component 200.

[0048] As Figure 2 , in an embodiment of the present utility model, the heating component 200 includes:

[0049] A magnetic conductive member 210 having a fixed end and a connection end provided at the fixed end, and the fixed end extends into the fixed groove 120;

[0050] A coil 220 wound around the connection end.

[0051] Among them, the magnetic conductive member 210 can be a traditional iron core structure. The magnetic conductive member 210 has a fixed end and a connection end, the fixed end extends into the fixed groove 120, the connection end extends towards the opposite pressing plate assembly 100, and the coil 220 is sleeved on the connection end. By passing an alternating current through the coil 220, the battery cell can be heated by electromagnetic induction, so as to improve the heating efficiency and effect. In addition, the positions of the connection ends on the two pressing plate assemblies 100 are opposite to each other, so as to ensure that the heating areas of the heating components 200 on the two pressing plate assemblies 100 for the battery cell are sufficiently concentrated, further improving the heating effect.

[0052] As Figure 2 , in an embodiment of the present utility model, a plurality of connection ends are provided, and the plurality of connection ends are arranged in a matrix. The connection ends can be arranged in a matrix on the horizontal plane, so as to increase the area where the heating component 200 can heat, so as to adapt to larger-sized battery cells; in addition, the arrangement mode of the connection ends is not limited to matrix arrangement. For example, circular array arrangement or diamond arrangement can also be adopted, which is not limited here.

[0053] As Figures 1 to 3 , in an embodiment of the present utility model, the two pressing plate assemblies 100 include an upper pressing plate assembly 100 arranged above and a lower pressing plate assembly 100 arranged below. The lower pressing plate assembly 100 includes:

[0054] A support seat 140 provided with an installation cavity 110 and a fixed groove 120;

[0055] A first support plate 150 arranged on the top of the support seat 140. There are two first support plates 150, and the two first support plates 150 are arranged side by side and at intervals to support the edges of the battery cell;

[0056] The second support plate 160 is disposed between the two first support plates 150 and is used to support the middle part of the battery cell.

[0057] The driving device 170 is disposed on the support base 140 and is drivingly connected to the second support plate 160 to drive the second support plate 160 to move up and down.

[0058] In this embodiment, the support base 140 includes a bottom plate and a frame disposed on the bottom plate. The two enclose a chamber with an open top. At the opening, the first support plate 150 and the second support plate 160 are provided. The first support plate 150 and the second support plate 160 close the opening to form the above-mentioned installation cavity 110. The fixing groove 120 is opened on the bottom plate; the two first support plates 150 are spaced apart, and the second support plate 160 is disposed between the two first support plates 150. During hot pressing, the two first support plates 150 support the edge position of the battery cell, and the second support plate 160 supports the middle part of the battery cell; in this solution, the second support plate 160 is movably disposed, and a driving device 170 is provided on the support base 140. The driving device 170 can drive the second support plate 160 to move up and down. After hot pressing is completed, the second support plate 160 rises and can lift the battery cell. At this time, the edge of the battery cell will be suspended, so that it is convenient for the clamping jaws to clamp the battery cell, which is beneficial to preventing the battery cell from being damaged during clamping and improving the yield of the battery cell.

[0059] Such as Figure 2 , in an embodiment of the present invention, the driving device 170 includes:

[0060] There are two telescopic members 171. The two telescopic members 171 are respectively disposed on opposite sides of the support base 140. The telescopic member 171 has a fixed end and a telescopic end. The fixed end is connected to the support base 140, and the telescopic end telescopically moves in the vertical direction;

[0061] The connecting member 172 is disposed at the telescopic end and is connected to the second support plate 160.

[0062] In this embodiment, the telescopic member 171 can be a device such as a cylinder. There are two cylinders. The two cylinders are disposed at opposite ends of the support base 140 along the length direction. The cylinder body forms the fixed end, and the piston rod of the cylinder forms the telescopic end. The cylinder body is fixedly connected to the support base 140 by screwing, and the piston rod telescopically moves in the vertical direction. The connecting member 172 can be a connecting plate structure. The connecting member 172 is fixedly connected to the edge of the second support plate 160 by screwing. The two cylinders synchronously expand and contract, thereby driving the second support plate 160 to move up and down.

[0063] In an embodiment of the present utility model, the first support plate 150 is detachably connected to the support base 140; in this way, the installation and disassembly of the first support plate 150 can be facilitated, thereby facilitating the assembly and subsequent maintenance of the hot pressing mechanism; similarly, the second support plate 160 is detachably connected to the connecting member 172, and thus, the installation and disassembly of the second support plate 160 can also be facilitated, thereby facilitating the assembly and subsequent maintenance of the hot pressing mechanism.

[0064] In an embodiment of the present utility model, the first support plate 150 and the second support plate 160 are made of non-metallic materials. In this solution, the first support plate 150 and the second support plate 160 can be ceramic materials. In this way, while ensuring that the first support plate 150 and the second support plate 160 can withstand sufficient pressure, the electromagnetic signal of the heating component 200 can smoothly pass through the first support plate 150 and the second support plate 160, ensuring the hot pressing effect.

[0065] The present utility model also proposes a hot pressing device, which is provided with a hot pressing mechanism for heating and extruding the battery cell. The specific structure of the hot pressing mechanism refers to the above-mentioned embodiment. Since this hot pressing device adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one.

[0066] The above description is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the technical concept of the present utility model, or direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A hot pressing mechanism for hot pressing a battery cell, characterized in that: The hot pressing mechanism comprises: There are two pressing plate assemblies, the two pressing plate assemblies are arranged opposite to each other, a mounting cavity and a fixing groove communicating with the mounting cavity are arranged inside the pressing plate assemblies, and a first inclined portion is arranged on a side wall of the fixing groove; A heating component is arranged in the installation cavity, and one end of the heating component extends into the fixing groove; A clamping member, slidably engaged with the first inclined portion; A fastener is disposed on the pressure plate assembly and is drivingly connected to the clamping member to drive the clamping member to slide along the first inclined surface portion and cooperate with the fixing groove to clamp or release the heating component.

2. The hot pressing mechanism according to claim 1, characterized in that: The pressure plate assembly is provided with a connection hole communicating with the fixing groove, and one end of the fastener passes through the connection hole and is threadedly connected with the clamping member.

3. The hot pressing mechanism according to claim 1, characterized in that: The clamping member has a clamping portion, and the clamping portion is attached to the side wall of the heating component.

4. The hot pressing mechanism according to claim 1, characterized in that: The heating component comprises: A magnetic conductive member having a fixed end and a connecting end arranged at the fixed end, wherein the fixed end extends into the fixed groove; The coil is wound around the connecting end.

5. The hot pressing mechanism according to claim 4, characterized in that: A plurality of the connection ends are provided, and the plurality of the connection ends are arranged in a matrix.

6. The hot pressing mechanism according to claim 1, characterized in that: The two pressing plate assemblies include an upper pressing plate assembly disposed at the top and a lower pressing plate assembly disposed at the bottom, and the lower pressing plate assembly includes: A support seat, provided with the installation cavity and the fixing groove; A first support plate, disposed on the top of the support seat, wherein two first support plates are provided, and the two first support plates are arranged side by side and at intervals to support the edge of the battery cell; A second support plate, disposed between the two first support plates, the second support plate being used to support the middle portion of the battery cell; The driving device is arranged on the supporting seat and is drivingly connected with the second supporting plate to drive the second supporting plate to rise and fall.

7. The hot pressing mechanism according to claim 6, characterized in that: The driving device comprises: There are two telescopic members, which are arranged on opposite sides of the support seat, and the telescopic members have a fixed end and a telescopic end, the fixed end is connected to the support seat, and the telescopic end is telescopic in the vertical direction; A connecting member is disposed at the telescopic end and connected to the second supporting plate.

8. The hot pressing mechanism according to claim 7, characterized in that: The first support plate is detachably connected to the support seat; and / or the second support plate is detachably connected to the connecting member.

9. The hot pressing mechanism according to claim 6, characterized in that: The first support plate and the second support plate are made of non-metal material.

10. A hot pressing device, characterized in that: The invention comprises the heat pressing mechanism as claimed in any one of claims 1 to 9.

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