Hot press

Abstract

The utility model discloses a hot press. The hot press comprises a base; a first hot pressing plate, a second hot pressing plate, a driving device and a ventilation device; the first hot pressing plate and the second hot pressing plate are arranged on the base, the first hot pressing plate and the second hot pressing plate are oppositely arranged, and a first air hole is formed in the side, facing the second hot pressing plate, of the first hot pressing plate; the driving device is connected with the first hot pressing plate or the second hot pressing plate and is used for driving the first hot pressing plate or the second hot pressing plate to move, so that the first hot pressing plate and the second hot pressing plate clamp or loosen an object to be pressed; and the ventilation device is communicated with the first air hole and is configured to blow air to the first air hole when the first hot pressing plate and the second hot pressing plate loosen the to-be-pressed object. According to the hot press provided by the embodiment of the utility model, when the first hot press plate and the second hot press plate are driven to be separated, the first hot press plate can be separated from the to-be-pressed object by blowing air to the first air hole, so that the probability of plate sticking is reduced, the problem that the to-be-pressed object falls off after being lifted is solved, and the qualification rate of the to-be-pressed object is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery preparation, and more specifically, to a hot press machine. Background Art

[0002] In the related art, during the process of preparing an electric core by a hot press machine, a plurality of electrode plates need to be placed on the lower pressing plate of the hot press machine, and the upper pressing plate moves to above the lower pressing plate to press the electric core. However, after the upper pressing plate presses the electric core, the electric core is likely to adhere to the pressing plate. When the upper pressing plate moves upward, it drives the electric core to move upward, but the electric core is likely to fall off, resulting in the electric core being damaged and affecting its qualification rate. There is room for improvement. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a hot press machine, which is not prone to the problem of sticking to the plate and improves the qualification rate of the electric core.

[0004] The hot press machine according to an embodiment of the utility model includes: a base; a first hot pressing plate, a second hot pressing plate, a driving device, and a ventilation device; wherein, the first hot pressing plate and the second hot pressing plate are arranged on the base, and the first hot pressing plate and the second hot pressing plate are arranged opposite to each other. A first air hole is provided on one side of the first hot pressing plate facing the second hot pressing plate; the driving device is connected to the first hot pressing plate or the second hot pressing plate and is used to drive the first hot pressing plate or the second hot pressing plate to move, so that the first hot pressing plate and the second hot pressing plate can approach or separate from each other to clamp or release the object to be pressed; a ventilation device, the ventilation device is communicated with the first air hole, and the ventilation device is configured to blow air to the first air hole when the first hot pressing plate and the second hot pressing plate release the object to be pressed.

[0005] The hot press machine according to an embodiment of the utility model is provided with a first air hole on the first hot pressing plate. When the driving device drives the first hot pressing plate and the second hot pressing plate to separate, by blowing air to the first air hole, the first hot pressing plate can be more easily separated from the object to be pressed, reducing the probability of the problem of sticking to the plate, avoiding the problem of the object to be pressed falling after being lifted, and improving the qualification rate of the object to be pressed.

[0006] In some embodiments, a second air hole is provided on one side of the second hot pressing plate facing the first hot pressing plate, the second air hole is communicated with the ventilation device, and the ventilation device is configured to draw air through the second air hole when the first hot pressing plate and the second hot pressing plate release the object to be pressed.

[0007] In some embodiments, the first air holes include a plurality of them, the first hot pressing plate has an air flow channel communicated with the plurality of first air holes, and the ventilation device is communicated with the air flow channel.

[0008] In some embodiments, the object to be pressed is an electric core; a first positioning member is provided on the first hot pressing plate, the second hot pressing plate has a second positioning member, and the driving device can drive the first hot pressing plate or the second hot pressing plate to move, so that the first positioning member and the second positioning member are in corresponding positions to clamp the tab of the electric core.

[0009] In some embodiments, one of the first positioning member and the second positioning member is defined with a receiving groove adapted to receive the tab, and the other can be inserted into the receiving groove under the movement of one of the second hot pressing plate or the first hot pressing plate to clamp the tab.

[0010] In some embodiments, the first positioning member is detachably connected to the first hot pressing plate; and / or, the second positioning member is detachably connected to the second hot pressing plate.

[0011] In some embodiments, it further includes a short-circuit test probe connected to a short-circuit tester, the short-circuit test probe is provided on the first positioning member or the second positioning member, and at least a part of the short-circuit test probe is located between the first positioning member and the second positioning member.

[0012] In some embodiments, it further includes a first limiting member, a second limiting member and a third limiting member. The first limiting member is arranged opposite to the first positioning member, the first limiting member is movable relative to the first positioning member, and can cooperate with the first positioning member to clamp both sides of the electric core. The second limiting member and the third limiting member are arranged opposite to each other, and at least one of the second limiting member and the third limiting member can move in a direction close to the other to cooperate with clamping the other two sides of the electric core.

[0013] In some embodiments, the driving device includes a first driving component and a second driving component. The first driving component is provided on the base, the second driving component is connected to the first driving component, the first hot pressing plate or the second hot pressing plate is connected to the second driving component. The first driving component is used to drive the second driving component to move in a first direction, and the second driving component is used to drive the first hot pressing plate or the second hot pressing plate to move in a second direction, and the first direction and the second direction are perpendicular.

[0014] In some embodiments, the first driving component includes a driving motor, a lead screw and a slider. The driving motor is provided on the base and connected to the lead screw. The slider is slidably provided on the base and is in threaded cooperation with the lead screw. The second driving component is connected to the slider to slide along the axial direction of the lead screw under the drive of the driving motor.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic diagram of a hot press according to an embodiment of the present utility model from one perspective;

[0018] Figure 2 is a schematic diagram of a hot press according to an embodiment of the present utility model from another perspective;

[0019] Figure 3 is a schematic diagram of a hot press according to an embodiment of the present utility model from yet another perspective.

[0020] Reference Numerals:

[0021] Hot press 100,

[0022] Base 10, platform 11, bracket 12, slide rail 13,

[0023] First hot pressing plate 20, first positioning member 21, first air hole 22,

[0024] Second hot pressing plate 30, second positioning member 31, receiving groove 311, second air hole 32, first limiting member 33, second limiting member 34, third limiting member 35, limiting air cylinder 36,

[0025] Driving device 40, first driving assembly 41, driving motor 411, lead screw 412, slider 413, second driving assembly 42,

[0026] Short - circuit test probe 50, heating element 60. Detailed Description of the Embodiment

[0027] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "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 drawings, and is only for the convenience of describing the present utility model 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 to the present utility model. In addition, features defined as "first", "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Next, reference is made to Figures 1 - 3 Describe the hot press 100 according to an embodiment of the present utility model.

[0031] As Figures 1 - 3 shown, the hot press 100 according to an embodiment of the present utility model includes a base 10, a first hot press plate 20, and a second hot press plate 30. The first hot press plate 20 and the second hot press plate 30 are provided on the base 10, and the first hot press plate 20 and the second hot press plate 30 are arranged opposite to each other. For example, the first hot press plate 20 is located above the second hot press plate 30, and a first air hole 22 is provided on the side of the first hot press plate 20 facing the second hot press plate 30.

[0032] A heating element 60, such as a heating tube, is provided on the hot press plate here. At least a part of the heating element 60 can be located inside the hot press plate. The heating element 60 can extend along the length direction or the width direction of the hot press plate. After the heating element 60 is powered on, heat can be transferred into the hot press plate to provide heat energy, so that when the first hot press plate 20 and the second hot press plate 30 press the object to be pressed, the object to be pressed is hot-pressed. Here, the object to be pressed can be an electric core, or other objects that need to be hot-pressed and compounded.

[0033] The hot press 100 further includes a driving device 40 which is arranged on the base 10. The hot press 100 is connected to the first hot pressing plate 20 or the second hot pressing plate 30 and is used to drive the first hot pressing plate 20 or the second hot pressing plate 30 to move, so as to clamp the battery cell by the first hot pressing plate 20 and the second hot pressing plate 30, thereby facilitating hot pressing of the battery cell. Or the two hot pressing plates 100 can release the battery cell to perform subsequent processes.

[0034] Among them, the driving device 40 can move the second hot pressing plate 30 or drive the first hot pressing plate 20 to move horizontally, so that the second hot pressing plate 30 and the driven first hot pressing plate 20 are in opposite positions, and then drive the first hot pressing plate 20 to move downward or drive the second hot pressing plate 30 to move upward to clamp the battery cell. As Figure 2 shown, the second hot pressing plate 30 can be fixed, and the driving device 40 can drive the first hot pressing plate 20 to move so that it corresponds to the position of the second hot pressing plate 30. Of course, it can also be that the first hot pressing plate 20 is fixed, and the driving device 40 drives the second hot pressing plate 30 to move so that it corresponds to the position of the first hot pressing plate 20.

[0035] The hot press 100 further includes a ventilation device (not shown in the figure). The ventilation device is communicated with the first air hole 22. When the first hot pressing plate 20 and the second hot pressing plate 30 release the battery cell, the ventilation device can blow air to the first air hole 22, so as to facilitate the separation of the first hot pressing plate 20 from the battery cell, prevent the battery cell from sticking to the first hot pressing plate 20 during the hot pressing process, and further prevent the battery cell from being damaged after sticking to the plate, resulting in defective conditions.

[0036] According to the hot press 100 of the embodiment of the present invention, by providing the first air hole 22 on the first hot pressing plate 20, when the driving device 40 drives the first hot pressing plate 20 and the second hot pressing plate 30 to separate, by blowing air to the first air hole 22, the first hot pressing plate 20 can be more easily separated from the battery cell, reducing the probability of the sticking plate problem, avoiding the problem of the battery cell falling after being lifted, and improving the qualified rate of the battery cell.

[0037] As Figure 2 shown, in some embodiments, a second air hole 32 is provided on the side of the second hot pressing plate 30 facing the first hot pressing plate 20. The second air hole 32 is communicated with the ventilation device. When the first hot pressing plate 20 and the second hot pressing plate 30 release the battery cell, the ventilation device can draw air through the second air hole 32, so that the second hot pressing plate 30 can adsorb the battery cell, further preventing the battery cell from adhering to the first hot pressing plate 20 and further facilitating the separation of the first hot pressing plate 20 from the battery cell.

[0038] As Figure 2As shown, in some embodiments, the second hot pressing plate 30 is provided with second air holes 32, and the second air holes 32 are communicated with the ventilation device. After the first hot pressing plate 20 and the second hot pressing plate 30 release the battery cell, the ventilation device can blow air into the second air holes 32, which is beneficial to the separation of the second hot pressing plate 30 from the battery cell, preventing the battery cell from adhering to the second hot pressing plate 30 and further facilitating the transfer of the battery cell to the next process position.

[0039] As Figure 1 and Figure 2 shown, both the first hot pressing plate 20 and the second hot pressing plate 30 are provided with air holes. The air holes can be communicated with the same ventilation device or different ventilation devices. After hot pressing is completed, the second air holes 32 of the second hot pressing plate 30 are evacuated to suck the battery cell, and the first air holes 22 of the first hot pressing plate 20 are blown with air to prevent the battery cell from adhering to the first hot pressing plate 20. Subsequently, the driving device 40 drives the first hot pressing plate 20 or the second hot pressing plate 30 to move. After the two hot pressing plates move away from each other until they return to the safe position, the second air holes 32 of the second hot pressing plate 30 can also be blown with air to facilitate the separation of the battery cell from the second hot pressing plate 30, so that the battery cell can be unloaded.

[0040] As Figure 1 shown, the first hot pressing plate 20 has a plurality of first air holes 22. The plurality of first air holes 22 can be arranged in an array. The first hot pressing plate 20 has a first air flow channel (not shown in the figure). The first air flow channel is communicated with the plurality of first air holes 22. One end of the first air flow channel is communicated with the ventilation device, so that the plurality of first air holes 22 can be blown with air simultaneously, further preventing the battery cell from adhering to the first hot pressing plate 20 and facilitating the separation of the first hot pressing plate 20 from the battery cell.

[0041] As Figure 2 shown, the second hot pressing plate 30 has a plurality of second air holes 32. The plurality of second air holes 32 can be arranged in an array. The second hot pressing plate 30 has a second air flow channel. The second air flow channel is communicated with the plurality of second air holes 32. One end of the second air flow channel is communicated with the ventilation device, so that the plurality of second air holes 32 can be evacuated simultaneously, improving the adsorption effect on the battery cell, further preventing the battery cell from adhering to the first hot pressing plate 20 and facilitating the separation of the first hot pressing plate 20 from the battery cell.

[0042] As Figure 1 and Figure 2As shown, in some embodiments, a first positioning member 21 is provided on the first hot pressing plate 20, the second hot pressing plate 30 has a second positioning member 31, and the driving device 40 can drive the first hot pressing plate 20 or the second hot pressing plate 30 to move, so that the positions of the first positioning member 21 and the second positioning member 31 correspond to clamp the tab of the battery cell. By cooperating the second positioning member 31 and the first positioning member 21 to clamp the tab, the fixing of the tab can be achieved, thereby positioning the battery cell and reducing the probability of misalignment of multiple electrode plates during the hot pressing of the battery cell, and improving the qualification rate of the battery cell.

[0043] As Figure 1 and Figure 2 shown, one of the first positioning member 21 and the second positioning member 31 defines a receiving groove 311 adapted to receive the tab, and the other can be inserted into the receiving groove 311 under the movement of one of the second hot pressing plate 30 or the first hot pressing plate 20 to clamp the tab.

[0044] As Figure 2 shown, in some embodiments, the second positioning member 31 defines a receiving groove 311 adapted to receive the tab, and the side of the receiving groove 311 facing the first hot pressing plate 20 is open. The driving device 40 drives one of the second hot pressing plate 30 or the first hot pressing plate 20 to move, so as to make the first positioning member 21 and the receiving groove 311 in plug-in fit. That is to say, under the action of the driving device 40, the first positioning member 21 can move to the receiving groove 311 of the second positioning member 31. By driving the second positioning member 31 or the first positioning member 21 to move, the two are made to approach each other, so that the first positioning member 21 can be inserted into the receiving groove 311 to achieve clamping of the tab. The receiving groove 311 can have a better positioning effect on the tab, further improving the stability of the battery cell.

[0045] In other embodiments, the second positioning member 31 can also be a block structure, the first positioning member 21 defines a receiving groove 311 open to the side facing the second positioning member 31, and the second positioning member 31 can be inserted into the receiving groove 311.

[0046] In some embodiments, both the second positioning member 31 and the first positioning member 21 are block structures, and the two clamp the tab through plane cooperation.

[0047] As Figure 1 and Figure 2As shown, in some embodiments, the first positioning member 21 has a mating hole. The first positioning member 21 and the first hot pressing plate 20 are connected by a fastener passing through the mounting hole and the mating hole, realizing the assembly of the first positioning member 21 and the first hot pressing plate 20. Moreover, the first positioning member 21 and the first hot pressing plate 20 are detachably connected. Thus, it is convenient to adjust the position of the first positioning member 21 to be able to correspond to the tab positions of batteries of different models, realizing the clamping of the tabs. That is, the first positioning member 21 is adjustable, enabling the hot press 100 to adapt to the fixation of batteries of various models and reducing the changeover cost.

[0048] As Figure 1 and Figure 2 shown, the side of the second hot pressing plate 30 has a plurality of mounting holes. The second positioning member 31 has a mating hole. The second positioning member 31 and the second hot pressing plate 30 are connected by a fastener passing through the mounting hole and the mating hole, realizing the assembly of the second positioning member 31 and the second hot pressing plate 30. Moreover, the second positioning member 31 and the second hot pressing plate 30 are detachably connected. Thus, it is convenient to adjust the position of the second positioning member 31 to be able to correspond to the tab positions of batteries of different models, realizing the clamping of the tabs. That is to say, the second positioning member 31 is set to be adjustable, enabling the hot press 100 to adapt to the fixation of batteries of various models and reducing the changeover cost.

[0049] Of course, for different batteries, the first positioning member 21 and the second positioning member 31 need to be adjusted synchronously so that the first positioning member 21 and the second positioning member 31 can clamp the corresponding tabs.

[0050] As Figure 2 and Figure 3 shown, the hot press 100 further includes a first limiting member 33, a second limiting member 34, and a third limiting member 35. The first limiting member 33 is arranged opposite to the first positioning member 21. The first limiting member 33 is movable relative to the first positioning member 21, and the first limiting member 33 can cooperate with the first positioning member 21 to clamp both sides of the battery cell.

[0051] As Figure 3 shown, the first limiting member 33 is located above the first hot pressing plate 20. The first limiting member 33 is connected to a limiting air cylinder 36. The limiting air cylinder 36 can drive the first limiting member 33 to move to realize the clamping and positioning of the electrode plate. At the same time, since the first limiting member 33 is arranged opposite to the second positioning member 31, when the first limiting member 33 moves in the direction close to the second positioning member 31, if the tab is not installed in place, the second positioning member 31 can be made to push the electrode plate to move so that the tab cooperates with the second positioning member 31 in place, thereby facilitating subsequent detection, hot pressing, etc.

[0052] The second limiting member 34 and the third limiting member 35 are arranged oppositely, and at least one of the second limiting member 34 and the third limiting member 35 can move towards the other to cooperate with clamping the other two sides of the battery cell, thereby not only realizing further limiting and clamping of the battery cell and reducing the probability of the battery cell being misaligned during hot pressing, but also clamping the battery cell to a certain extent, preventing the battery cell from sticking to the first hot pressing plate 20 and moving up with the first hot pressing plate 20, and further avoiding the battery cell from being damaged, thus improving the qualified rate of the battery cell.

[0053] As Figure 2 and Figure 3 shown, the second limiting member 34 is located on one side of the second hot pressing plate 30, and the second limiting member 34 can be fixedly connected to the second hot pressing plate 30, or the second limiting member 34 is directly fixedly connected to the base 10. The third limiting member 35 is connected to a limiting air cylinder 36, and the limiting air cylinder 36 can drive the third limiting member 35 to move to realize clamping and positioning of the battery cell. That is to say, the second limiting member 34 and the second positioning member 31 can be fixed on the second hot pressing plate 30, and the two can position the tab and one side edge of the electrode sheet of a certain model. Then, through the movement of the first limiting member 33 and the third limiting member 35, the battery cell can be clamped, so that it can be stabilized on the second hot pressing plate 30.

[0054] It should be noted that when positioning battery cells of different models, the battery cell needs to be placed on the second hot pressing plate 30 first, and one side of the battery cell is abutted against the second limiting member 34. Subsequently, the positions of the first positioning member 21 and the second positioning member 31 are adjusted so that the tab of the battery cell can be placed in the receiving groove 311 of the second positioning member 31. At this time, for this model of battery cell, the positions of the first positioning member 21 and the second positioning member 31 are fixed and no longer adjusted. Then, during hot pressing, the first limiting member 33 and the third limiting member 35 are driven by the limiting air cylinder 36 to move to fix the battery cell.

[0055] As Figure 2 shown, in some embodiments, the hot press 100 further includes a short - circuit test probe 50 connected to a short - circuit tester. The short - circuit test probe 50 is arranged on the first positioning member 21 or the second positioning member 31, and at least a part of the short - circuit test probe 50 is located between the first positioning member 21 and the second positioning member 31. As Figure 2 shown, the first positioning member 21 includes two spaced - apart ones, and two short - circuit test probes 50 are arranged on the two first positioning members 21, and at least a part of each short - circuit test probe 50 protrudes from the side of the first positioning member 21 close to the second positioning member 31. Thus, when the tab is clamped between the second positioning member 31 and the first positioning member 21, the short - circuit tester is externally connected through the short - circuit test probe 50 to detect the short - circuit condition of the battery.

[0056] Specifically, a short-circuit test can be carried out before hot pressing to sequentially determine whether the incoming materials are normal, or a short-circuit test can be carried out after hot pressing, without the need to perform a short-circuit test at another station; sequentially detect whether the battery cells after hot pressing are normal. If defective products are found, they can be removed in time to further prevent defective products from flowing into the next process.

[0057] Since the short-circuit test probe 50 is arranged on the positioning member and is detachably matched with the corresponding hot pressing plate through the positioning member, the position of the short-circuit test probe 50 can be adjusted, which can adapt to the short-circuit tests of various battery cells and reduce the equipment changeover cost.

[0058] Such as Figure 2 and Figure 3 As shown in the figures, in some embodiments, the driving device 40 includes a first driving component 41 and a second driving component 42. The first driving component 41 is arranged on the base 10, the second driving component 42 is connected to the first driving component 41, the second hot pressing plate 30 or the first hot pressing plate 20 is connected to the second driving component 42. The first driving component 41 is used to drive the second driving component 42 to move along a first direction (such as Figure 2 the left-right direction shown in the figure), and the second driving component 42 is used to drive the second hot pressing plate 30 or the first hot pressing plate 20 to move along a second direction (such as Figure 2 the up-down direction shown in the figure). The first direction and the second direction are perpendicular. Thus, the second hot pressing plate 30 or the first hot pressing plate 20 can be driven to move in two directions, so as to facilitate the reliable cooperation between the second positioning member 31 and the first positioning member 21, and thus the ear can be clamped. Among them, by controlling the movement of the second driving component 42, the pressure between the two hot pressing plates can be accurately controlled.

[0059] In addition, by enabling the first hot pressing plate 20 or the second hot pressing plate 30 to move in two directions, the two hot pressing plates can be made to move away from each other as much as possible, increasing the operating space, facilitating loading and unloading, reducing the probability of collision between the battery cell and the hot pressing plate, improving the product qualification rate, and preventing scalding accidents, etc., improving safety.

[0060] Such as Figure 2 and Figure 3 As shown in the figures, in some embodiments, the first driving component 41 includes a driving motor 411, a lead screw 412 and a slider 413. The driving motor 411 is arranged on the base 10 and is connected to the lead screw 412. The slider 413 is slidably arranged on the base 10. The slider 413 is in threaded cooperation with the lead screw 412. The second driving component 42 is connected to the slider 413 to slide along the axial direction of the lead screw 412 under the drive of the driving motor 411.

[0061] That is to say, by providing power through the driving motor 411, the lead screw 412 can convert the rotational motion of the driving motor 411 into a horizontal movement. The second driving assembly 42 is connected to the lead screw 412 through the slider 413, so that the second driving assembly 42 can move along the first direction.

[0062] As Figure 3 shown, in some embodiments, there are two sets of the driving motor 411 and the lead screw 412, and the two sets of structures are located on both sides of the second driving assembly 42. Both ends of the slider 413 are connected to the two lead screws 412, and the second driving assembly 42 is arranged on the slider 413. By setting two driving motors 411 and two lead screws 412, the stability and reliability of the overall structure can be improved. The second driving assembly 42 is installed on the slider 413 and is located between the two lead screws 412. Thus, under the action of the two driving motors 411, the second driving assembly 42 can be driven to move along the first direction, reducing the probability of the second driving assembly 42 rotating or shaking, and further improving the reliability of the thermal pressing of the battery cell.

[0063] As Figure 2 shown, in some embodiments, the second driving assembly 42 is a cylinder, and the cylinder is connected to the first hot pressing plate 20. By controlling the telescopic movement of the cylinder, the movement of the first hot pressing plate 20 along the second direction is controlled.

[0064] As Figure 3 shown, in some embodiments, the base 10 includes a platform 11 and a bracket 12. The second hot pressing plate 30 is arranged on the platform 11, and the bracket 12 is arranged on the platform 11 and is located on the outer periphery of the second hot pressing plate 30 to avoid interference between the bracket 12 and the placement of the electrode sheet. The driving device 40 is arranged on the bracket 12, and the driving device 40 is connected to the first hot pressing plate 20. Thus, the first hot pressing plate 20 can be arranged above the second hot pressing plate 30, and at the same time, the driving device 40 can drive the first hot pressing plate 20 to move, thereby realizing the clamping of the battery cell.

[0065] The bracket 12 is arranged above the platform 11 and includes four columns and two slide rails 13. Each slide rail 13 is connected between the two columns, and the two slide rails 13 are arranged at intervals in the horizontal direction. The driving motor 411 is arranged on the bracket 12 and is connected to the lead screw 412. The slider 413 is in threaded cooperation with the lead screw 412, and the slider 413 is in sliding cooperation with the slide rail 13, thereby further improving the sliding stability of the slider 413.

[0066] Next, the thermal pressing process of the battery cell is described in combination with the hot press 100 according to the embodiments of the present invention.

[0067] Before thermal pressing, the heating elements 60 in the first hot pressing plate 20 and the second hot pressing plate 30 are powered on to start heating and raise the temperature to the set temperature.

[0068] Place the battery cell on the second hot press plate 30, put the tabs of the battery cell into the receiving groove 311 of the second positioning member 31, and the limit air cylinder 36 drives the first limiting member 33 and the third limiting member 35 to move to clamp the battery cell.

[0069] The driving device 40 drives the first hot press plate 20 to move. First, turn on the driving motor 411. The driving motor 411 drives the lead screw 412 to rotate, driving the second driving assembly 42 and the first hot press plate 20 to move horizontally above the battery cell. Then turn on the second driving assembly 42 to lower the first hot press plate 20 to press the battery cell tightly. The first positioning member 21 will move down with the first hot press plate 20 to cooperate with the second positioning member 31 to clamp the tabs.

[0070] The short - circuit test probe 50 on the first positioning member 21 is externally connected to a short - circuit tester to perform a short - circuit test on the battery cell to detect whether there is a short circuit before and after hot pressing.

[0071] After hot pressing, the ventilation device evacuates the second air holes 32 on the second hot press plate 30 to suck the battery cell, and the ventilation device blows air into the first air holes 22 on the first hot press plate 20 to prevent the battery cell from sticking to the first hot press plate 20. After the first hot press plate 20 returns to the safe position, the ventilation device blows air into the second air holes 32 on the second hot press plate 30 to facilitate the blanking of the battery cell.

[0072] Other components and operations of the hot press 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here. Among them, the up - down direction, left - right direction, and front - back direction are based on the up - down direction, left - right direction, and front - back direction shown in the figure.

[0073] In the description of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than the second feature.

[0074] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A hot press, characterized in that, Comprising: A base, a first hot pressing plate, a second hot pressing plate, a driving device, and a ventilation device; wherein, The first hot pressing plate and the second hot pressing plate are arranged on the base, and the first hot pressing plate and the second hot pressing plate are arranged oppositely. A first air hole is provided on one side of the first hot pressing plate facing the second hot pressing plate; The driving device is connected to the first hot pressing plate or the second hot pressing plate, and is used for driving the first hot pressing plate or the second hot pressing plate to move, so that the first hot pressing plate and the second hot pressing plate can approach or separate from each other to clamp or release an object to be pressed; The ventilation device is communicated with the first air hole, and the ventilation device is configured to blow air to the first air hole when the first hot pressing plate and the second hot pressing plate release the object to be pressed.

2. The hot press according to claim 1, wherein A second air hole is provided on one side of the second hot pressing plate facing the first hot pressing plate, and the second air hole is communicated with the ventilation device. The ventilation device is configured to extract air through the second air hole when the first hot pressing plate and the second hot pressing plate release the object to be pressed.

3. The hot press according to claim 1, characterized in that, The first air holes include a plurality of them, and the first hot pressing plate has an air flow channel communicated with the plurality of first air holes, and the ventilation device is communicated with the air flow channel.

4. The hot press according to claim 1, characterized in that, The object to be pressed is an electric core; a first positioning member is provided on the first hot pressing plate, the second hot pressing plate has a second positioning member, and the driving device can drive the first hot pressing plate or the second hot pressing plate to move, so that the positions of the first positioning member and the second positioning member correspond to clamp the tab of the electric core.

5. The hot press according to claim 4, characterized in that, One of the first positioning member and the second positioning member defines a receiving groove adapted to receive the tab, and the other can be inserted into the receiving groove under the movement of one of the second hot pressing plate or the first hot pressing plate to clamp the tab.

6. The hot press according to claim 4, wherein, The first positioning member is detachably connected to the first hot pressing plate; and / or, the second positioning member is detachably connected to the second hot pressing plate.

7. The hot press according to claim 4, characterized in that, It further includes a short-circuit test probe connected to a short-circuit tester. The short-circuit test probe is provided on the first positioning member or the second positioning member, and at least a part of the short-circuit test probe is located between the first positioning member and the second positioning member.

8. The hot press according to claim 4, characterized in that It further includes a first limiting member, a second limiting member, and a third limiting member, The first limiting member and the second positioning member are arranged oppositely, the first limiting member is movable relative to the second positioning member, and can cooperate with the second positioning member to clamp both sides of the electric core, The second limiting member and the third limiting member are arranged oppositely, and at least one of the second limiting member and the third limiting member can move in a direction close to the other to cooperate with clamping the other two sides of the electric core.

9. The hot press according to any one of claims 1-8, characterized in that, The driving device includes a first driving assembly and a second driving assembly. The first driving assembly is arranged on the base, the second driving assembly is connected to the first driving assembly, and the first hot pressing plate or the second hot pressing plate is connected to the second driving assembly. The first driving component is used to drive the second driving component to move in a first direction, and the second driving component is used to drive the first hot pressing plate or the second hot pressing plate to move in a second direction, where the first direction and the second direction are perpendicular to each other.

10. The hot press according to claim 9, characterized in that, The first driving component includes a driving motor, a lead screw, and a slider. The driving motor is arranged on the base and connected to the lead screw. The slider is slidably arranged on the base and is in threaded cooperation with the lead screw. The second driving component is connected to the slider to slide along the axial direction of the lead screw under the drive of the driving motor.

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