Surface pressure compression device for electrode plate stack for all-solid-state battery, and press equipment for electrode plate stack for all-solid-state battery including same

Abstract

The surface pressure compression device for an electrode plate stack for an all-solid-state battery of the present invention may comprise: a support structure which provides a supporting force; a transfer part which is mounted on the support structure, receives an electrode plate stack entering from the outside, and transfers the electrode plate stack along a transfer path; and pressing units which are positioned at the opposite sides of the transferred electrode plate stack interposed therebetween, and apply a surface pressure to the upper and lower surfaces of the electrode plate stack to compress the electrode plate stack. Therefore, the surface pressure compression device distributes the compression force applied to the electrode plate stack and thus prevents pressure concentration, so as to reduce thickness non-uniformity of the electrode plate stack, prevent damage to the electrode plate stack, and enable manufacture of a high-efficiency electrode plate stack.

Description

Surface pressure compression device for electrode laminates for all-solid-state batteries and press equipment for electrode laminates for all-solid-state batteries equipped with the same

[0001] The present invention relates to a surface pressure compression device for compressing a laminate of electrode plates for an all-solid-state battery simultaneously with conveying, and more specifically, to a surface pressure compression device for an laminate of electrode plates for an all-solid-state battery that increases the compression efficiency of the laminate by applying a surface compressive force to the laminate.

[0002] Various types of rechargeable batteries are used in a wide range of applications, from mobile phones, camcorders, and laptop computers to electric vehicles and energy storage systems (ESS). Rechargeable batteries have the advantages of being rechargeable, having a low self-discharge rate, and being free from the memory effect. However, because they use liquid electrolytes, there is a risk of fire or explosion due to thermal runaway during charging and discharging.

[0003] To address these issues, research is being conducted on all-solid-state batteries that utilize solid electrolytes instead of liquid electrolytes. An all-solid-state battery is a battery that uses a solid electrolyte. Solid electrolytes have a higher energy density than liquid electrolytes, relatively shorter charging times, and are safe due to a lower risk of explosion or fire.

[0004] The solid electrolyte is located between the anode and cathode and provides a pathway for lithium ions to pass through. The electrical performance of an all-solid-state battery improves as the contact area between the anode and cathode and the solid electrolyte increases.

[0005] This is because increasing the contact area between the anode, cathode, and solid electrolyte shortens the ion transport path and reduces interfacial resistance, thereby improving battery efficiency. Lower interfacial resistance facilitates the movement of lithium ions, increasing electrochemical reaction efficiency and potentially enhancing the battery's output and energy density.

[0006] For this reason, the production process of all-solid-state batteries includes a step of compressing the electrode laminate (a laminate of the anode, solid electrolyte, and cathode). The reason for compressing the electrode laminate is to improve battery performance by eliminating voids within the laminate and expanding the contact area between the anode and cathode and the electrolyte.

[0007] Conventional surface pressure compression devices for compressing electrode plate laminates include a pair of pressure rollers. The electrode plate laminate is compressed as it passes between the pressure rollers. However, this type of surface pressure compression device using a pressure roller compression method has the disadvantage of not having high compression efficiency for the electrode plate laminate. This is because the electrode plate laminate is compressed only by a line contact method as it passes between the pressure rollers during transport. Line compression applies excessively high local pressure to the compression area, which can cause excessive deformation or material damage to the electrode plate laminate. Furthermore, since it is difficult to apply uniform pressure across the entire electrode plate laminate, there is a possibility that internal voids may not be completely removed. There is a need for a surface pressure compression device capable of producing an electrode plate laminate with good performance by applying uniform pressure to the entire surface of the electrode plate laminate to efficiently remove internal voids. In this regard, Korean Registered Patent Publication No. 10-2549831 (Method for manufacturing an all-solid-state battery) has been disclosed.

[0008] The present invention was created to resolve the above-mentioned problems and aims to provide a surface pressure compression device for an all-solid-state battery electrode laminate that can produce a high-efficiency electrode laminate by dispersing the compressive force applied to the electrode laminate to eliminate thickness non-uniformity and preventing damage to the electrode laminate caused by pressure concentration.

[0009] The surface pressure compression device for an all-solid-state battery electrode plate laminate according to the present invention, as a means of solving the problem for achieving the above objective, compresses an electrode plate for an all-solid-state battery while moving it along a transport path, and comprises: a support structure that provides support; a transport unit mounted on the support structure that receives an electrode plate laminate entering from the outside and transports it along a transport path; and a pressing unit located on opposite sides with the transported electrode plate laminate and compresses it by applying surface pressure to the upper and lower surfaces of the electrode plate laminate.

[0010] In addition, the above-mentioned conveying unit comprises an upper conveying belt located above the conveying path of the electrode plate laminate and circulating while supported by a plurality of guide rolls, a lower conveying belt installed below the conveying path and circulating while supported by a plurality of guide rolls, and a conveying belt drive that circulates the upper conveying belt and the lower conveying belt and controls the circulation speed, wherein a portion of the upper conveying belt and the lower conveying belt is mutually parallel and can be in contact with the electrode plate laminate with the electrode plate laminate in between.

[0011] In addition, the pressing unit comprises: a plurality of upper rollers that press downward through the upper conveyor belt a stack of electrode plates in contact with the upper conveyor belt; a plurality of lower rollers that press upward through the lower conveyor belt a stack of electrode plates in contact with the lower conveyor belt; and a pressure control unit that controls the surface pressure applied to the stack of electrode plates by adjusting the gap between the lower rollers and the upper rollers.

[0012] In addition, the pressing unit comprises an upper roller housing that is supported by the support structure and rotatably accommodates an upper roller, and a lower roller housing that is positioned correspondingly below the upper roller housing and is capable of being raised or lowered by a pressure adjustment unit.

[0013] In addition, the above-mentioned pressure adjustment unit has a lifting actuator that raises and lowers the lower roller housing while mounted on the support structure.

[0014] In addition, a fine gap adjustment unit is further provided to adjust the gap of the upper roller relative to the electrode plate body during transport.

[0015] In addition, the conveyor belt drive includes a variable speed motor capable of adjusting the output speed, and a drive roller that contacts the upper conveyor belt and the lower conveyor belt, respectively, and transmits the rotational force of the variable speed motor to the upper conveyor belt and the lower conveyor belt.

[0016] In addition, it further has a temperature control module that heats the upper and lower conveyor belts to regulate the heat transferred to the electrode plate.

[0017] In addition, a belt temperature sensor is further provided to detect the temperature of the upper conveyor belt and the lower conveyor belt and transmit it to a temperature control module.

[0018] In addition, a tension control unit is further included to maintain the tension of the upper and lower conveyor belts by reflecting the expansion and contraction amounts when the upper and lower conveyor belts expand or contract due to heat from the temperature control module.

[0019] In addition, a meandering control sensor is further provided to detect meandering during the circulating movement of the upper conveyor belt and the lower conveyor belt.

[0020] Meanwhile, in another aspect of the present invention, a press machine for an all-solid-state battery is provided, comprising a surface pressure pressing device for the electrode plate laminate and an additional pressing unit that passes the electrode plate laminate separated from the surface pressure pressing device after passing between the driving roll and the pressing unit and performs additional pressing.

[0021] In this case, the additional compression unit is equipped with rollers facing each other, so that the electrode plate laminate that has passed through the surface pressure compression device can be pressed by linear pressure as it passes between the rollers.

[0022] The surface pressure compression device for an all-solid-state battery electrode laminate according to the present invention, as described above, can correct thickness non-uniformity of the electrode laminate and prevent damage to the electrode laminate by dispersing the compression force applied to the electrode laminate to prevent pressure concentration.

[0023] FIG. 1 is a drawing illustrating the overall structure of a press equipment for a laminated electrode plate for an all-solid-state battery according to one embodiment of the present invention.

[0024] Figures 2 and 3 are drawings for explaining the operation of a surface pressure pressing device among the electrode plate laminate press equipment for a solid-state battery of Figure 1.

[0025] FIGS. 4 and FIGS. 5 are drawings showing the compression unit separately in the surface compression device shown in FIGS. 1.

[0026] Figure 6 is a drawing to explain the structure and function of the speed control unit and the tension control unit in the surface pressure compression device of Figure 1.

[0027] Hereinafter, one embodiment according to the present invention will be described in more detail with reference to the attached drawings.

[0028] FIG. 1 is a drawing illustrating the overall structure of a press equipment for a laminated electrode plate for an all-solid-state battery according to an embodiment of the present invention, FIG. 2 and FIG. 3 are drawings for explaining the operation of a surface pressure pressing device among the press equipment for a laminated electrode plate for an all-solid-state battery of FIG. 1, and FIG. 4 and FIG. 5 are drawings separately illustrating a pressing unit in the surface pressure pressing device shown in FIG. 1. In addition, FIG. 6 is a drawing for explaining the structure and function of a speed control unit and a tension control unit in the surface pressure pressing device of FIG. 1.

[0029] The press equipment for a solid-state battery electrode plate laminate according to the present embodiment is equipment that compresses the solid-state battery electrode plate laminate (100) while moving it along a transport path. As the sheet-type electrode plate laminate (100) is compressed in the thickness direction, the structure becomes denser and internal voids are eliminated, thereby increasing the contact area of ​​the solid electrolyte with respect to the positive and negative electrodes.

[0030] The electrode plate lamination press equipment for a solid-state battery according to the present embodiment is equipped with a surface pressure compression device (20) and an additional compression part (70).

[0031] The surface pressure compression device (20) of the present embodiment can transfer the electrode plate body (100) delivered from the electrode plate laminate supply unit (10) to the additional compression unit (70) after surface pressure. The 'surface pressure' is a compression in which a pressure member (an upper conveyor belt and a lower conveyor belt in this embodiment) in contact with the upper and lower surfaces of the object, i.e., the electrode plate laminate, is pressed toward the electrode plate laminate.

[0032] In the same concept, the electrode plate body (100) that is compressed while passing between the rollers is compressed in a state of line contact with the rollers, so it can be called line pressing. The electrode plate laminate (100) compressed by the surface pressure compression device (20) can be moved to an additional compression part (70) and further compressed.

[0033] In this embodiment, a supply unit (10) may be located on the upstream side of the surface pressure compression device (20), and an additional compression unit (70) may be located on the downstream side. The supply unit (10) serves to continuously deliver the electrode plate laminate (100) to be compressed to the surface pressure compression device (20).

[0034] The additional compression unit (70) applies a linear pressure to the electrode plate body (100) that has passed through the surface pressure compression device (20) to apply additional compression. The electrode plate laminate (10) passes between the rollers of the additional compression unit (70), is pressed by the linear pressure, and then transferred to a subsequent process.

[0035] As described above, the electrode plate laminate surface pressure compression device (20) according to the present embodiment includes a support structure (21), a conveying unit, and a pressing unit.

[0036] The support structure (21) provides a supporting force that supports the components of the surface pressure compression device (20). The structure of the support structure (21) can be implemented in various ways. The transfer unit, pressing unit, pressure adjustment unit, gap fine adjustment unit, and moving belt drive are mounted on the support structure (21). The transfer unit, while mounted on the support structure (21), receives the electrode plate laminate (100) entering from the electrode plate laminate supply unit (10) and transports it along the transport path. The transfer unit includes an upper transfer belt (23a), a lower transfer belt (23b), and a transfer belt drive (57).

[0037] The upper conveyor belt (23a) is located above the conveyor path of the electrode plate laminate (100) and moves in a cyclic motion while supported by a plurality of guide rolls (21a) and drive rolls (21c). The upper conveyor belt (23a) can be made of stainless steel. The upper conveyor belt (23a) has a certain width and moves in a cyclic motion along the guide rolls (21a) and drive rolls (21c). The guide rolls (21a) are mounted on the support structure (21) and support the upper conveyor belt (23a) tautly. The tension of the upper conveyor belt (23a) is achieved by the tension control unit (27) described later. The thickness of the upper conveyor belt (23a) can be varied, for example, it can have a thickness of 0.3m to 0.5mm. Also, the diameter of the guide rolls (21a) is at least 160 times the thickness of the upper conveyor belt (23a).

[0038] Additionally, the lower conveyor belt (23b) is installed at the bottom of the conveyor path of the electrode plate laminate (100) and moves in a circulating motion while supported by a plurality of guide rolls (21a). The lower conveyor belt (23b) can also be made of stainless steel. The lower conveyor belt (23b) has a certain width and moves in a circulating motion along a plurality of guide rolls (21a) and drive rolls (21c). The guide rolls (21a) are mounted on a support structure (21) and support the lower conveyor belt (23b) tautly. The tension of the lower conveyor belt (23b) is also controlled by the tension control unit (27) described later. The thickness of the lower conveyor belt (23b) is the same as the thickness of the upper conveyor belt (23a).

[0039] The tension of the upper conveyor belt (23a) and the lower conveyor belt (23b) is controlled by the tension control unit (27). In this embodiment, two tension control units (27) are applied to the surface pressure compression device (20). One maintains the tension of the upper conveyor belt (23a), and the other maintains the tension of the lower conveyor belt. An explanation of this will be provided later.

[0040] A portion of the upper conveyor belt (23a) and the lower conveyor belt (23b) is parallel to each other and can come into contact with the upper and lower surfaces of the electrode plate stack (100) with the electrode plate stack in between. That is, a portion of the upper conveyor belt (23a) comes into close contact with the upper surface of the electrode plate stack (100), and a portion of the lower conveyor belt (23b) comes into close contact with the lower surface of the electrode plate stack (100).

[0041] Meanwhile, the conveyor belt drive (57) causes the upper conveyor belt (23a) and the lower conveyor belt (23b) to circulate and controls the circulation speed. The conveyor belt drive (57) is installed on the inner side of the upper conveyor belt (23a) and on the inner side of the lower conveyor belt (23b), respectively.

[0042] The conveyor belt drive (57) includes a speed-shifting motor (57a), a drive roller (21c), and a power transmission unit. The speed-shifting motor (57a) is a motor capable of adjusting rotational speed. The rotational speed of the speed-shifting motor (57a) can be controlled through a separate control unit (not shown). Additionally, the drive roller (21c) in the conveyor belt drive (57) that drives the upper conveyor belt (23a) comes into contact with the upper conveyor belt (23a). The drive roller (21c) has the same size as the guide roller (21a).

[0043] The drive roller (21c) receives rotational force from the transmission motor (57a) through a plurality of pulleys (57b) and a transmission belt (57c), rotates, and transmits the power of the transmission motor (57a) to the upper conveyor belt (23a). The upper conveyor belt (23a) receives rotational force from the drive roller (21c) and performs a circulating motion.

[0044] Additionally, the conveyor belt drive (57) that causes the lower conveyor belt (23b) to circulate also has a speed-shifting motor (57a), a drive belt (57f), and a drive roller (21e). The drive roller (21e) comes into contact with the lower conveyor belt (23b) and transmits the rotational force of the speed-shifting motor (57a) to the lower conveyor belt (23b). The lower conveyor belt (23b) receives the rotational force of the speed-shifting motor through the drive roller (21e) and circulates. The rotational speeds of the upper conveyor belt (23a) and the lower conveyor belt (23b) are the same.

[0045] The pressing unit (30) is located on the opposite side with the conveying electrode plate stack (100) in between and serves to apply surface pressure to the upper and lower surfaces of the electrode plate stack to compress it.

[0046] The pressing unit (30) includes an upper roller housing (31), an upper roller (32), a lower roller housing (33), a lower roller (34), a pressure adjustment unit, and a gap fine adjustment unit (22).

[0047] The upper roller housing (31) is supported by the support structure (21) and rotatably accommodates a plurality of upper rollers (32). The upper rollers (32) are mutually parallel and rotatable. It also serves to apply downward pressure to the electrode plate stack (100) in contact with the bottom surface of the upper conveyor belt (23a) through the upper conveyor belt. That is, it provides downward pressure to the upper conveyor belt (23a), causing the upper conveyor belt (23a) to press down on the electrode plate stack (100). Since the upper conveyor belt (23a) and the electrode plate stack (100) are in contact, the upper conveyor belt (23a) ultimately presses against the electrode plate stack (100).

[0048] The pressure applied to the electrode plate laminate (100) by the upper roller (32) is a reaction force to the pressure applied by the lower roller (34) pushing up the lower conveyor belt (23b).

[0049] The upper roller housing (31) can be finely adjusted in position while mounted on the support structure (21). That is, the spacing of the upper roller housing (31) can be adjusted along the transport path of the electrode plate laminate (100). This fine adjustment can be made through the spacing fine adjustment unit (22). The spacing fine adjustment unit (22) includes a fixed supporter (22a) and a height adjustment bolt (22b). The fixed supporter (22a) is a block-shaped member fixed to the support structure (21) and provides a vertical female hole (not shown in the drawing).

[0050] Additionally, the height adjustment bolt (22b) is a member that is screw-coupled to the female screw hole of the fixed supporter (22a) and has its lower end connected to the upper roller housing (31). The lower end of the height adjustment bolt (22b) is axially rotatable while connected to the upper roller housing (31). Therefore, when the height adjustment bolt (22b) rotates to adjust the height, the height of the upper roller housing (31) can also be adjusted.

[0051] The lower roller housing (33) is positioned vertically below the upper roller housing (31) to be vertically movable and accommodates a plurality of lower rollers (34) inside. The lower rollers (34) are rotatable while supported by the lower roller housing (33). Additionally, the lower rollers (34) are located vertically below the upper roller (32).

[0052] The lower roller (34) presses the lower conveyor belt (23b) upward. Since the electrode plate laminate (100) is located on the upper surface of the lower conveyor belt (23b), pressing the lower conveyor belt (23b) upward causes the electrode plate laminate (100) to be compressed between the upper conveyor belt (23a).

[0053] Since the electrode plate stack (100) is in contact with the lower conveyor belt (23b), the electrode plate stack (100) is ultimately pressed in the thickness direction between the upper conveyor belt (23a) and the lower conveyor belt (23b). The electrode plate stack (100) is pressed in the thickness direction while a certain rectangular area of ​​the upper conveyor belt (23a) and the lower conveyor belt (23b) is in contact with the electrode plate stack (100). The pressure area may vary depending on the size of the device.

[0054] The above surface pressure can be controlled by a pressure control unit. That is, the pressure applied to the electrode plate laminate (100) can be controlled through the pressure control unit. The pressure control unit controls the surface pressure applied to the electrode plate laminate by controlling the gap between the lower roller (34) and the upper roller (32), and in this embodiment, a lifting actuator (37) is applied.

[0055] The lifting actuator (37) is a hydraulic cylinder and can raise the lower roller housing (33). Since the lower roller (34) is supported by the lower roller housing (33), the height of the lower roller (34) is ultimately controlled by the lifting actuator (37). FIG. 4 shows the lower roller housing (33) in a raised state. FIG. 5 also shows the lower roller housing (33) in a lowered state. As the lower roller housing (33) lowers, the lower roller (34) is separated from the lower conveyor belt (23b). Additionally, the surface pressure compression device (20) according to the present embodiment is further equipped with a temperature control module (25), a belt temperature sensor (55), and a meandering control sensor (51). The temperature control module (25) heats the upper conveyor belt and the lower conveyor belt to control the heat transferred to the electrode plate body (100). That is, the temperature control module (25) heats the upper conveyor belt (23a) and the lower conveyor belt (23b) to increase the compression efficiency of the electrode plate laminate (100). The compression efficiency can be increased by applying heat during the compression of the electrode plate laminate (100). The temperature control module (25) can heat the upper conveyor belt (23a) and the lower conveyor belt (23b) to a temperature of 150°C to 170°C.

[0056] The belt temperature sensor (55) detects the temperature of the upper conveyor belt (23a) and the lower conveyor belt (23b) in real time and transmits it to the temperature control module (25). The temperature control module (25) controls the temperature of the upper conveyor belt (23a) and the lower conveyor belt (23b) based on the temperature information received from the belt temperature sensor (55).

[0057] The meandering control sensor (51) detects meandering during the circulating movement of the upper conveyor belt (23a) and the lower conveyor belt (23b). The detection results of the meandering control sensor (51) are transmitted to a separate control unit. When meandering occurs, the control unit returns the upper conveyor belt (23a) or the lower conveyor belt (23b) that has meandered to a normal position.

[0058] Meanwhile, the tension control unit (27) maintains the tension of the upper conveyor belt and the lower conveyor belt by reflecting the amount of expansion and contraction when the upper conveyor belt and the lower conveyor belt expand or contract due to heat from the temperature control module (25). The upper conveyor belt (23a) and the lower conveyor belt (23b) can always be kept taut by the tension control unit (27).

[0059] The tension control unit (27) includes an actuator (27a) and a connecting body (27b). The actuator (27a) is operated by a separate control unit and adjusts the position of the connecting body (27b). The connecting body (27b) is an assembly that rotatably supports some guide rolls (21a) and presses the upper conveyor belt (23a) and the lower conveyor belt (23b) in the direction of arrow a in Fig. 1 by the actuator (27a). Of course, the stronger the force pressing the upper conveyor belt (23a) and the lower conveyor belt (23b) in the direction of arrow a, the stronger the tension of the upper and lower conveyor belts becomes.

[0060] Ultimately, the electrode plate laminate surface pressure compression device (20) according to the present embodiment can efficiently compress the electrode plate laminate (100) moving along the transport path through the organic operation of the conveyor belt drive (57), the tension control unit (27), the temperature control module (25), and the lifting actuator (37). In addition, the electrode plate laminate, which is uniformly compressed throughout after passing through the surface pressure compression device, can be compressed to an appropriate thickness and density by being pressed by line contact while passing through the additional compression unit (60). Although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications are possible by those skilled in the art within the scope of the technical concept of the present invention.

[0061] It is industrially applicable because it allows for the production of high-efficiency electrode plates by dispersing the compressive force applied to the electrode plate laminate by means of a surface pressure compression device for all-solid-state batteries, thereby eliminating thickness non-uniformity.

Claims

1. A compression device for compressing an electrode plate for an all-solid-state battery while moving it along a transport path, A supporting structure that provides support; A transfer unit mounted on the above support structure and receiving a stack of electrode plates entering from the outside and transferring them along a transfer path; and A surface pressure compression device for an all-solid-state battery electrode laminate, characterized by including a pressing unit located on opposite sides with the conveying electrode laminate and applying surface pressure to the upper and lower surfaces of the electrode laminate to compress it.

2. In Paragraph 1, The above transfer unit is, An upper conveyor belt located above the conveyor path of a laminated electrode and circulating while supported by a plurality of guide rollers, and A lower conveyor belt installed at the bottom of the above conveyor path and capable of circulating motion while supported by a plurality of guide rollers, and A conveyor belt drive is provided to control the circulation speed while causing the upper conveyor belt and the lower conveyor belt to circulate, and A surface pressure compression device for an all-solid-state battery electrode stack, characterized in that a portion of the upper conveyor belt and the lower conveyor belt are provided to be mutually parallel and to be able to come into contact with the electrode stack with the electrode stack in between.

3. In Paragraph 2, The above pressing unit is, A plurality of upper rollers that press downward through the upper conveyor belt a laminate of electrode plates in contact with the upper conveyor belt, and A plurality of lower rollers that press upward through the lower conveyor belt the electrode plate laminate in contact with the lower conveyor belt, and A surface pressure compression device for an all-solid-state battery electrode laminate, characterized by including a pressure adjustment unit that controls the surface pressure applied to the electrode laminate by adjusting the gap between the lower roller and the upper roller.

4. In Paragraph 3, The above pressing unit is, An upper roller housing that is supported by the above support structure and rotatably accommodates an upper roller, and A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by including a lower roller housing that is positioned correspondingly to the lower side of an upper roller housing and is capable of being raised or lowered by a pressure adjustment unit.

5. In Paragraph 4, The above pressure control unit is, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by including a lifting actuator that raises and lowers a lower roller housing while mounted on a support structure.

6. In Paragraph 4, The above pressing unit is, A surface pressure compression device for an all-solid-state battery electrode laminate, characterized by including a gap fine adjustment unit for adjusting the gap of an upper roller for an electrode plate body during transport.

7. In Paragraph 2, The above conveyor belt drive is, A variable speed motor capable of adjusting output speed, and A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by including a drive roller that contacts the upper conveyor belt and the lower conveyor belt, respectively, and transmits the rotational force of a speed-shifting motor to the upper conveyor belt and the lower conveyor belt.

8. In Paragraph 2, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by further including a temperature control module that controls the heat transferred to the electrode plate body by heating the upper conveyor belt and the lower conveyor belt.

9. In Paragraph 8, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by further including a belt temperature sensor that detects the temperature of the upper conveyor belt and the lower conveyor belt and transmits it to a temperature control module.

10. In Paragraph 8, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by further including a tension control unit that maintains the tension of the upper conveyor belt and the lower conveyor belt by reflecting the amount of expansion and contraction when the upper conveyor belt and the lower conveyor belt expand or contract due to heat from the temperature control module above.

11. In Paragraph 2, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized by further including a meandering control sensor that detects meandering during the circulation movement of the upper conveyor belt and the lower conveyor belt.

12. In Paragraph 1, A surface pressure compression device for an all-solid-state battery electrode plate laminate, characterized in that the upper conveyor belt and lower conveyor belt are made of stainless steel and have a thickness of 0.3 m to 0.5 mm.

13. A surface pressure compression device for a laminated electrode according to any one of claims 1 to 12; and A press equipment for a solid-state battery electrode plate laminate, characterized by including an additional compression unit that passes the electrode plate laminate separated from the surface pressure compression device through the space between the drive roll of the above-mentioned conveying unit and the pressing unit, and performs additional compression.

14. In Paragraph 13, The above additional compression unit is equipped with rollers facing each other, and A press equipment for a solid-state battery electrode laminate, characterized in that the electrode laminate passing through the above surface pressure compression device is pressed by linear pressure while passing between the above rollers.

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