A battery core hot press

Abstract

The present invention discloses a battery cell hot press, which includes a hot pressing platform, a material receiving plate and a pressure mechanism, and also includes a bracket and a fixed seat located beside the hot pressing platform; the material receiving plate can be driven by a first translation drive mechanism to slide horizontally relative to the hot pressing platform; the bracket can be driven by a rotation drive mechanism to rotate relative to the hot pressing platform; the bracket includes a transition frame, and also includes a support unit, and the support unit can allow the material receiving plate to move in and out. In the present invention, by enabling the material receiving plate to detach from the hot pressing platform and enter the support unit, and by providing a rotatable bracket, the battery cell can be transferred to the material receiving plate through a transfer operation through the transition effect of the transition frame and the rotational movement of the bracket, thereby avoiding the problem of contact between the manipulator and the material receiving plate, and maintaining the integrity of the bearing plane below the battery cell, that is, the upper surface of the material receiving plate, during the hot pressing process, so as to ensure the quality of the battery cell after hot pressing.

Description

Technical Field

[0001] The invention relates to the technical field of battery core hot pressing, and in particular to a battery core hot pressing machine. Background Art

[0002] Battery cell hot pressing technology is a key process in the field of modern battery manufacturing. It is related to the performance, safety and service life of the battery. With the rapid development of new energy technologies, the quality of batteries, as the core components of energy storage, directly affects the performance of the entire energy system. The battery cell hot pressing process compacts the electrode materials inside the battery by precisely controlling temperature and pressure to improve the energy density and structural stability of the battery. This process not only optimizes the charging and discharging performance of the battery, but also enhances its reliability under extreme conditions. As the global demand for sustainable energy solutions continues to grow, the development of battery cell hot pressing technology is of great significance to promoting progress in areas such as electric vehicles, smart grids and portable electronic devices.

[0003] Before hot pressing of the battery cells, the stacked battery cells need to be transported to the hot pressing table. During the transport process, since the battery cells are in a loose state, the robot that transports the battery cells needs to hold the bottom of the battery cells. Therefore, the battery cells cannot be placed on the flat hot pressing table. In order to solve this problem, in the prior art, patent CN 114784360 B discloses a battery cell hot pressing device and a hot pressing method thereof, wherein the lower hot pressing plate is set to a three-section structure, and the middle section is a lifting plate that can move up and down. When the battery cells need to be placed on the lower hot pressing plate, the lifting plate rises to receive the battery cells moved by the robot, and then the lifting plate descends so that the lower side of the battery cells is completely supported. In this structure, the integrity of the lower hot pressing plate structure is destroyed, and there will inevitably be gaps and unevenness between the three sections of the lower hot pressing plate, and the uniformity of thermal conductivity is also affected, so the quality of the battery cells after hot pressing is affected. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a battery cell hot pressing machine that provides a complete support surface for the battery cell during the hot pressing process and ensures the quality of hot pressing.

[0005] Technical solution: To achieve the above-mentioned purpose, the battery core hot press of the present invention comprises a hot press platform, a material receiving plate and a pressure mechanism, and also comprises a bracket and a fixing seat located beside the hot press platform;

[0006] The hot press platform has an electric heating device inside, and the material receiving plate is made of a material with high hardness and good thermal conductivity; the material receiving plate can be driven by the first translation driving mechanism to slide horizontally relative to the hot press platform;

[0007] The bracket can be driven by a rotation drive mechanism to rotate relative to the hot press platform; the bracket includes a transition frame and a support unit, and the support unit can allow the receiving plate to move in and out. The first translation drive mechanism can drive the receiving plate to enter the support unit and leave the hot press platform, so that when the bracket rotates, the receiving plate can follow the rotation of the bracket.

[0008] During operation, the receiving plate slides relative to the hot pressing platform under the drive of the transition frame and enters the support unit. At this time, the receiving plate is placed above the transition frame; the external manipulator moves the battery cells that need to be hot pressed after lamination to the transition frame, and then the rotary drive mechanism drives the bracket to rotate 180° to reverse the battery cells that need to be hot pressed so that the battery cells are supported by the receiving plate. Finally, the first translation drive mechanism drives the receiving plate to retract so that the receiving plate returns to the hot pressing platform. Subsequently, the battery cells can be hot pressed.

[0009] Furthermore, the transition frame has a receiving platform and side plates on both sides of the receiving platform, and a groove is provided between the receiving platform and each of the side plates, and when the transition frame is upright, the groove is in a concave state relative to the transition frame. When the manipulator transfers the battery cell to be hot-pressed to the transition frame, the support body of the manipulator is placed in the groove, so that the battery cell can be smoothly placed on the upper end surface of the receiving platform.

[0010] Furthermore, the transition frame and the support unit are both installed in a hollow, cylindrical rotating frame; the rotation drive mechanism includes a ring gear fixed on the rotating frame, a pinion gear meshing with the ring gear and a motor driving the pinion gear to rotate; the motor is installed on the fixed seat.

[0011] Furthermore, both axial sides of the rotating frame are provided with annular guide rails, and a guide slider corresponding to each of the annular guide rails is fixed on the fixing seat, and the guide slider is slidably matched with the annular guide rails.

[0012] The manipulator and the hot pressing platform respectively carry out the battery cell transportation and battery cell hot pressing operations at the two ends of the transition frame. Since the rotary frame is a structure with two ends connected, it will not affect the manipulator's support body and the receiving plate from entering and exiting from the two ends of the rotary frame respectively.

[0013] Furthermore, the upper end of the hot press platform has a concave groove, and the material receiving plate has a convex portion that can be engaged with the groove. With this structure, the material receiving plate can be prevented from moving left and right relative to the hot press platform.

[0014] Furthermore, the support unit has a groove portion, the number of the support units is two, and the two support units are symmetrically arranged. When in use, the two side edges of the receiving plate enter the groove portions of the two support units respectively, and the receiving plate can be effectively supported before and after the rotating frame rotates.

[0015] Furthermore, the first translation drive mechanism is an electric cylinder, which has a telescopic rod, and a loop is installed at the end of the telescopic rod; a connecting seat used in conjunction with the loop is installed on the material receiving plate; there is a gap between the loop and the connecting seat, so that the connecting seat can rotate relative to the loop. Specifically, the connecting seat has a slot for the loop to be embedded, and the loop has two ribs placed on the front and rear sides of the slot, and a rod is placed in the slot between the two ribs, and the diameter of the rod is smaller than the width of the slot. With this connection structure, the electric cylinder can drive the material receiving plate to perform horizontal translation movement, and the material receiving plate can rotate relative to the loop.

[0016] Furthermore, the transition frame can translate relative to the rotating frame so that the distance between the transition frame and the supporting unit changes.

[0017] Specifically, the rotating frame has a plurality of support beams, and guide rods are slidably installed at both ends of each support beam. The guide rods are sleeved with springs placed between the transition frame and the support beams; the springs make the transition frame tend to move closer to the support unit. In addition, rollers are installed on each guide rod; the transition frame has a translation frame that can translate relative to it, and the translation frame has a block installed corresponding to each roller, and the block has a profile, and the profile has a first plane and a second plane that are arranged in parallel, and there is a transition slope between the first plane and the second plane. The translation frame is driven by the second translation drive mechanism to translate relative to the guide rod. When the first plane acts on the roller, the transition frame is in a position away from the support unit. At this time, after the manipulator puts the battery cell on the top of the transition frame, there is a gap between the material receiving plate at the support unit and the transition frame; after the manipulator withdraws from the rotating frame, the second translation drive mechanism operates, so that the second plane acts on the roller, so that the transition frame moves in the direction close to the support unit, and the upper and lower ends of the battery cell respectively resist the material receiving plate and the transition frame. When the rotary frame rotates, the battery cells will not slide relative to the receiving plate.

[0018] Preferably, the side plate can slide relative to the receiving platform so that the distance between the two side plates can be changed; each side plate is connected to a plate portion arranged perpendicularly thereto, the plate portion has a guide hole, the guide hole has two parallel straight grooves, the two straight grooves are connected by an inclined groove, and the translation frame is installed with a guide pin corresponding to each guide hole. Before the battery cell is placed on the receiving platform, the width between the two side plates is greater than the width of the battery cell. After the battery cell is placed on the receiving platform, when the translation frame is translated relative to the transition frame, on the one hand, the block on the translation frame shortens the distance between the transition frame and the support unit, and on the other hand, the guide pin moves in the guide hole so that the two side plates are close to each other, clamping the left and right sides of the battery cell. In this way, during the rotation of the rotating frame, the battery cell is surrounded by the side plates, the receiving platform and the receiving plate and cannot slide, which can ensure the position accuracy of the battery cell on the receiving plate after the rotating frame is flipped 180°.

[0019] Beneficial effects: The battery core hot press of the present invention has the following beneficial effects:

[0020] (1) By enabling the receiving plate to detach from the hot pressing platform and enter the supporting unit, and by providing a rotatable bracket, the battery cells can be transferred to the receiving plate through the transition effect of the transition frame and the rotational movement of the bracket, thereby avoiding the problem of contact between the robot and the receiving plate, and maintaining the integrity of the bearing plane below the battery cell, that is, the upper surface of the receiving plate, during the hot pressing process, thereby ensuring the quality of the battery cell after hot pressing.

[0021] (2) By providing a rotating frame, a circular guide rail and a rotating drive mechanism, it is convenient for the manipulator and the receiving plate to perform the operation of placing and removing the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a side view of the structure of the battery cell hot press;

[0023] Figure 2 This is a top view of the structure of the battery cell hot press;

[0024] Figure 3 This is a three-dimensional structural diagram of a battery cell hot press;

[0025] Figure 4 It is a front view structural diagram of the battery cell hot press in the first state;

[0026] Figure 5 for Figure 2 The enlarged structure diagram of part A in the middle;

[0027] Figure 6 for Figure 3 The enlarged structure diagram of part B;

[0028] Figure 7 for Figure 4 The enlarged structure diagram of the middle C part;

[0029] Figure 8 It is a schematic diagram of the combination of the battery cell and the support body of the robot;

[0030] Fig. 9 It is a front view structural diagram of the battery cell hot press in the second state;

[0031] Fig.10 It is a first combined structural diagram of the translation frame and the transition frame part in the preferred embodiment;

[0032] Fig.11 It is a second combined structural diagram of the translation frame and the transition frame part in the preferred embodiment.

[0033] In the figure: 1-hot pressing platform; 11-groove; 2-material receiving plate; 21-protrusion; 22-connecting seat; 3-bracket; 31-transition frame; 31a-receiving platform; 31b-side plate; 31c-groove; 31d-plate; 31e-guide hole; 32-support unit; 32a-groove; 4-first translation drive mechanism; 41-slip ring; 5-rotation drive mechanism; 51-ring gear; 52-pinion; 53-motor; 6-manipulator; 61-bracket; 7-rotating frame; 71-ring guide rail; 72-guide slider; 73-support beam; 74-guide rod; 75-spring; 81-roller; 82-translation frame; 83-block; 84-second translation drive mechanism; 85-guide pin; 9-pressure mechanism; 10-fixed seat. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figure 1-3 The battery cell hot press shown in the figure comprises a hot press platform 1, a material receiving plate 2 and a pressure mechanism 9, and also comprises a bracket 3 and a fixing seat 10 located beside the hot press platform 1;

[0036] The hot press platform 1 has an electric heating device inside, and the receiving plate 2 is made of a material with high hardness and good thermal conductivity; the receiving plate 2 can be driven by the first translation driving mechanism 4 to slide horizontally relative to the hot press platform 1;

[0037] The bracket 3 can be driven by the rotation drive mechanism 5 to rotate relative to the hot press platform 1; the bracket 3 includes a transition frame 31 and a support unit 32, and the support unit 32 can allow the receiving plate 2 to move in and out. The first translation drive mechanism 4 can drive the receiving plate 2 to enter the support unit 32 and leave the hot press platform 1, so that when the bracket 3 rotates, the receiving plate 2 can rotate with the bracket 3.

[0038] During operation, the receiving plate 2 slides relative to the hot pressing platform 1 under the drive of the transition frame 31 and enters the supporting unit 32. At this time, the receiving plate 2 is placed above the transition frame 31. Figure 4 As shown; the external manipulator 6 moves the battery cells that need to be hot-pressed after lamination to the transition rack 31, and then the rotary drive mechanism 5 drives the bracket 3 to rotate 180° to reverse the battery cells that need to be hot-pressed so that the battery cells are supported by the receiving plate 2 (as shown in FIG. Fig. 9 As shown), finally, the first translation drive mechanism 4 drives the receiving plate 2 to retract, so that the receiving plate 2 returns to the hot pressing platform 1. Subsequently, the battery cell can be hot pressed.

[0039] By adopting the above structure, the receiving plate 2 can be separated from the hot pressing platform 1 and enter the supporting unit 32, and by providing a rotatable bracket 3, the battery cell can be transferred to the receiving plate 2 through the transition effect of the transition frame 31 and the rotation movement of the bracket 3 through a transfer operation, thereby avoiding the problem of contact between the robot and the receiving plate 2, and maintaining the integrity of the bearing plane below the battery cell, that is, the upper surface of the receiving plate 2 during the hot pressing process, thereby ensuring the quality of the battery cell after hot pressing.

[0040] Preferably, the transition rack 31 has a receiving platform 31a and side panels 31b located on both sides of the receiving platform 31a, and a groove 31c is provided between the receiving platform 31a and each of the side panels 31b. When the transition rack 31 is upright, the groove 31c is in a concave state relative to the transition rack 31. When the manipulator 6 transfers the battery cell to be hot-pressed to the transition rack 31, the support body 61 of the manipulator 6 is placed in the groove 31c, so that the battery cell can be smoothly placed on the upper end surface of the receiving platform 31a.

[0041] Preferably, the transition frame 31 and the support unit 32 are both installed in a hollow, cylindrical rotating frame 7; the rotation drive mechanism 5 includes a ring gear 51 fixed on the rotating frame 7, and also includes a pinion 52 meshing with the ring gear 51 and a motor 53 driving the pinion 52 to rotate; the motor 53 is installed on the fixed seat 10.

[0042] The slewing frame 7 has annular guide rails 71 on both axial sides. A guide slider 72 corresponding to each annular guide rail 71 is fixed on the fixing seat 10 . The guide slider 72 is slidably matched with the annular guide rail 71 .

[0043] In the above structure, by setting the rotating frame 7, the annular guide rail 71 and the rotating drive mechanism 5, the manipulator 6 and the receiving plate 2 can be conveniently placed in and removed from the battery cells. The manipulator 6 and the hot pressing platform 1 perform the battery cell handling and hot pressing operations at the two ends of the transition frame 31. Since the rotating frame 7 is a structure with two ends through, it will not affect the support body 61 of the manipulator 6 and the receiving plate 2 from entering and exiting from the two ends of the rotating frame 7. The support body 61 of the manipulator 6 holds the battery cells. Figure 8 As shown, when the robot 6 places the battery cell on the receiving platform 31a, the support body 61 is located in the groove 31c.

[0044] The upper end of the hot press platform 1 has a concave groove 11, and the material receiving plate 2 has a convex portion 21 that can be engaged with the groove 11. With this structure, the material receiving plate 2 can be prevented from moving left and right relative to the hot press platform 1.

[0045] The support unit 32 has a groove 32a, and there are two support units 32, which are symmetrically arranged. When in use, the two side edges of the receiving plate 2 enter the grooves 32a of the two support units 32 respectively, and the receiving plate 2 can be effectively supported before and after the rotating frame 7 rotates.

[0046] The first translation driving mechanism 4 is an electric cylinder having a telescopic rod. Figure 2 , 5 As shown, a loop 41 is installed at the end of the telescopic rod; a connection seat 22 used in conjunction with the loop 41 is installed on the material receiving plate 2; there is a gap between the loop 41 and the connection seat 22, so that the connection seat 22 can rotate relative to the loop 41. Specifically, the connection seat 22 has a notch for the loop 41 to be embedded, and the loop 41 has two ribs placed on the front and rear sides of the notch, and a rod portion is placed in the notch between the two ribs, and the diameter of the rod portion is smaller than the width of the notch. With this connection structure, the electric cylinder can drive the material receiving plate 2 to perform horizontal translation movement, and the material receiving plate 2 can rotate relative to the loop 41.

[0047] The transition frame 31 can translate relative to the rotating frame 7 so that the distance between the transition frame 31 and the support unit 32 changes. Specifically, the rotating frame 7 has a plurality of support beams 73, and guide rods 74 are slidably mounted at both ends of each support beam 73. Figure 7 As shown, the guide rod 74 is provided with a spring 75 between the transition frame 31 and the support beam 73; the spring 75 makes the transition frame 31 tend to move toward the support unit 32. In addition, each guide rod 74 is provided with a roller 81; the transition frame 31 is provided with a translation frame 82 which can translate relative to the transition frame 31. Figure 6As shown, the translation frame 82 has a block 83 installed corresponding to each roller 81, and the block 83 has a profile, and the profile has a first plane and a second plane arranged in parallel, and a transition slope is provided between the first plane and the second plane. The translation frame 82 is driven by the second translation drive mechanism 84 to perform translational motion relative to the guide rod 74. When the first plane acts on the roller 81, the transition frame 31 is at a position away from the support unit 32. At this time, after the manipulator 6 puts the battery cell on the top of the transition frame 31, there is a gap between the material receiving plate 2 at the support unit 32 and the transition frame 31; after the manipulator 6 withdraws from the rotating frame 7, the second translation drive mechanism 84 operates, so that the second plane acts on the roller 81, so that the transition frame 31 moves in the direction close to the support unit 32, and the upper and lower ends of the battery cell respectively abut against the material receiving plate 2 and the transition frame 31. When the rotating frame 7 rotates, the battery cell will not produce a sliding motion relative to the material receiving plate 2.

[0048] In a preferred embodiment, Figure 10-11 As shown, the side plate 31b can slide relative to the receiving platform 31a, and the side plate 31b and the receiving platform 31a are disengaged from each other so that the distance between the two side plates 31b can be changed; each side plate 31b is connected to a plate portion 31d arranged perpendicularly thereto, and the plate portion 31d has a guide hole 31e, and the guide hole 31e has two parallel straight grooves, which are connected by an inclined groove, and the translation frame 82 is installed with a guide pin 85 arranged corresponding to each guide hole 31e. Before the battery cell is placed on the receiving platform 31a, the width between the two side plates 31b is greater than the width of the battery cell. After the battery cell is placed on the receiving platform 31a, when the translation frame 82 is translated relative to the transition frame 31, on the one hand, the block 83 on the translation frame 82 shortens the distance between the transition frame 31 and the support unit 32, and on the other hand, the guide pin 85 moves in the guide hole 31e to make the two side plates 31b approach each other, clamping the left and right sides of the battery cell. In this way, during the rotation of the rotating frame 7, the battery cell is surrounded by the side plates 31b, the receiving platform 31a and the receiving plate 2 and cannot slide, which can ensure the position accuracy of the battery cell on the receiving plate 2 after the rotating frame 7 is flipped 180°. After the rotating frame 7 rotates 180°, the battery cell is supported by the receiving plate 2. Thereafter, the second translation drive mechanism 84 causes the translation frame 82 to move in the opposite direction, so that the side plates 31b move to both sides and the distance between the two side plates 31b becomes larger. At the same time, the transition frame 31 moves upward to release the battery cell. Finally, the first translation drive mechanism 4 retracts to pull the receiving plate 2 back onto the hot pressing platform 1. The hot pressing platform 1 heats the receiving plate 2, and the pressure mechanism 9 presses down to complete the hot pressing operation.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A battery core hot press, comprising a hot press platform (1), a material receiving plate (2) and a pressure mechanism (9), and also comprising a bracket (3) and a fixing seat (10) located beside the hot press platform (1); characterized in that: The receiving plate (2) can be driven by a first translation driving mechanism (4) to slide horizontally relative to the hot pressing platform (1); The bracket (3) can be driven by a rotary drive mechanism (5) to rotate relative to the hot pressing platform (1); the bracket (3) includes a transition frame (31) and a support unit (32), and the support unit (32) can allow the receiving plate (2) to move in and out; The transition frame (31) comprises a receiving platform (31a) and side panels (31b) located on both sides of the receiving platform (31a), and a groove (31c) is provided between the receiving platform (31a) and each of the side panels (31b); The transition frame (31) and the support unit (32) are both installed in a hollow, cylindrical rotating frame (7); the rotation drive mechanism (5) comprises a ring gear (51) fixed on the rotating frame (7), a pinion gear (52) meshing with the ring gear (51), and a motor (53) driving the pinion gear (52) to rotate; the motor (53) is installed on the fixed seat (10); The rotating frame (7) has annular guide rails (71) on both axial sides, and a guide slider (72) corresponding to each of the annular guide rails (71) is fixed on the fixed seat (10), and the guide slider (72) is slidably matched with the annular guide rail (71); The transition frame (31) is capable of translationally moving relative to the rotating frame (7) so that the distance between the transition frame (31) and the supporting unit (32) changes; The rotating frame (7) is provided with a plurality of support beams (73), and guide rods (74) are slidably mounted at both ends of each support beam (73), and a spring (75) is sleeved on the guide rod (74) and is arranged between the transition frame (31) and the support beam (73); the spring (75) enables the transition frame (31) to have a tendency to move toward the support unit (32); each guide rod (74) is mounted with a roller (81); the transition frame (31) is provided with a translation frame (82) capable of translation relative to the transition frame, and the translation frame (82) is provided with a block (83) mounted corresponding to each roller (81), and the block (83) has a profile, and the profile has a first plane and a second plane arranged in parallel, and the first plane and the second plane are parallel to each other. A transition slope is provided between the two planes; the translation frame (82) is driven by the second translation drive mechanism (84) to perform translational motion relative to the guide rod (74); when the first plane acts on the roller (81), the transition frame (31) is at a position away from the support unit (32); at this time, after the manipulator (6) places the battery cell above the transition frame (31), a gap is provided between the material receiving plate (2) at the support unit (32) and the transition frame (31); after the manipulator (6) withdraws from the rotating frame (7), the second translation drive mechanism (84) operates, so that the second plane acts on the roller (81), so that the transition frame (31) moves in a direction close to the support unit (32), and the upper and lower ends of the battery cell respectively abut against the material receiving plate (2) and the transition frame (31).

2. The battery core hot press according to claim 1, characterized in that: The upper end of the hot pressing platform (1) is provided with a concave groove (11), and the receiving plate (2) is provided with a protruding portion (21) capable of being engaged with the groove (11).

3. The battery core hot press according to claim 1, characterized in that: The support unit (32) has a groove portion (32a), the number of the support units (32) is two, and the two support units (32) are arranged symmetrically.

4. The battery core hot press according to claim 1, characterized in that: The first translation drive mechanism (4) is an electric cylinder having a telescopic rod, the end of which is provided with a looper (41); a connecting seat (22) for use with the looper (41) is installed on the material receiving plate (2); there is a loose fit between the looper (41) and the connecting seat (22), so that the connecting seat (22) can rotate relative to the looper (41).

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