Clamping device for battery and battery manufacturing method

Abstract

The invention discloses a clamping device for a battery and a battery manufacturing method, and the clamping device comprises a plurality of clamping plates which are arranged at intervals; the first pressurizing device is suitable for pushing the plurality of clamping plates to move close to each other in sequence from one end in the thickness direction to the other end in the thickness direction so as to apply pressure to the battery; the clamping assembly is movably arranged on at least one side of each clamping plate in the thickness direction, and the clamping assembly can move in the thickness direction of the clamping plates and is suitable for clamping and fixing the final edge sealing position of the battery. According to the clamping device, the clamping assembly capable of moving in the thickness direction is arranged on at least one side of the clamping plate in the thickness direction so as to clamp and fix the final edge sealing position of the battery, so that electrolyte cannot enter the final edge sealing position of the battery in the gel curing process of the battery, no gel-state pollutant exists at the final edge sealing position of the battery, and the service life of the battery is prolonged. And effective final sealing of the final sealing edge of the battery is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a battery clamping device and a battery manufacturing method. Background Art

[0002] Among the related technologies, solid-state batteries have become the mainstream research direction due to their high safety and high energy density. Solid-state batteries need to gel the electrolyte inside the battery under certain external pressure and temperature conditions. In the process of external pressurization of the solid-state battery, the free electrolyte inside the solid-state battery is subject to external pressure, and the electrolyte is redistributed. Some of the free electrolyte will be squeezed to the air bag position and remain in the final sealing edge area of ​​the battery. The electrolyte in the final sealing edge area is gelled and solidified, and the gel-like substance remains in the final sealing edge. Due to the residual gel-like substance on the surface of the aluminum-plastic film at the final sealing edge of the battery, the aluminum-plastic film cannot be effectively heat-sealed, and there is a phenomenon of low heat sealing strength or ineffective heat sealing, which causes the risk of battery leakage and swelling, seriously affecting battery performance. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a clamping device for a battery. The clamping device according to the present invention clamps and fixes the final sealing edge of the battery by arranging a clamping assembly that can move along the thickness direction on at least one side of the clamping plate in the thickness direction, so that the electrolyte cannot enter the final sealing edge of the battery during the gel curing process of the battery, so that there is no gel-state contaminant at the final sealing edge of the battery, thereby achieving effective final sealing at the final sealing edge of the battery.

[0004] The invention also provides a method for manufacturing a battery used in the clamping device.

[0005] The clamping device for batteries according to the present invention comprises: a clamping plate, wherein the clamping plate is constructed to be a plurality of clamping plates arranged at intervals, and an installation space suitable for accommodating the battery is formed between two adjacent clamping plates; a first pressurizing device, which is arranged on the clamping plate, and is suitable for pushing the plurality of clamping plates to move successively from one end in the thickness direction toward the other end in the thickness direction so as to be close to each other to apply pressure to the battery; a clamping assembly, which is movably arranged on at least one side in the thickness direction of each clamping plate, and the clamping assembly can move along the thickness direction of the clamping plate and is suitable for clamping and fixing the final sealing edge of the battery.

[0006] The clamping device according to the present invention clamps and fixes the battery by a plurality of clamping plates, the first pressurizing device can push the clamping plates to apply pressure to the battery, a clamping assembly is further provided on at least one side of the clamping plates in the thickness direction, and at least a portion of the clamping assembly can move along the thickness direction to clamp and fix the final sealing edge of the battery, so that during the gel curing process of the battery, the electrolyte cannot enter the final sealing edge of the battery, so that there is no gel-state contaminant at the final sealing edge of the battery, thereby achieving effective final sealing of the final sealing edge of the battery.

[0007] According to some embodiments of the present invention, the clamping assembly includes: a second pressurizing device, which is arranged on the clamping plate; a clamping plate, which is arranged on at least one side in the thickness direction of each clamping plate and is connected to the second pressurizing device, and a protrusion protruding away from the clamping plate is formed on the clamping plate, wherein the second pressurizing device is suitable for driving the clamping plate to move along the thickness direction.

[0008] According to some embodiments of the present invention, the protrusion is configured as a flexible member.

[0009] According to some embodiments of the present invention, the clamping assembly further includes: a first buffer member, wherein the first buffer member is disposed between the clamping plate and the second pressurizing device.

[0010] According to some embodiments of the present invention, the second pressurizing device is configured as a cylinder, which includes: a cylinder body and a piston rod, wherein the piston rod is movably arranged in the cylinder body, and the movable end of the piston rod is connected to the clamping plate and is suitable for pushing the clamping plate to move along the thickness direction; or the second pressurizing device is configured as a linear motor, wherein a driving shaft is provided on the linear motor, and the driving shaft is connected to the clamping plate to drive the clamping plate to make a linear motion along the thickness direction.

[0011] According to some embodiments of the present invention, a matching hole is formed on each of the clamping plates, and the clamping device further includes: a guide member, which passes through the multiple matching holes respectively, and the outer peripheral wall of the guide member is in contact with the inner peripheral wall of each of the matching holes to limit the movement of the multiple clamping plates along the length and height directions.

[0012] According to some embodiments of the present invention, the clamping device further comprises: a heating device, wherein the heating device is disposed in the clamping plate and is used to heat the battery.

[0013] According to some embodiments of the present invention, the clamping device further comprises: a pressure detection device, which is disposed at the other end of the plurality of clamps in terms of thickness and is suitable for detecting the magnitude of the force applied by the clamps on the battery.

[0014] According to some embodiments of the present invention, the clamping device further includes: a second buffer member, wherein the second buffer member is arranged on both sides of the clamping plate in the thickness direction.

[0015] The following is a brief description of the battery manufacturing method according to the present invention.

[0016] The battery pack manufacturing method according to the present invention comprises: after obtaining the battery final edge sealing signal, controlling the movement of the clamping assembly according to the signal to clamp and fix the final edge sealing of the battery, and after the final edge sealing is clamped and fixed, driving the first pressurizing device to push the clamping plate to move to pressurize the battery in the installation space.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a clamping device according to an embodiment of the present invention;

[0020] Figure 2 is a schematic structural diagram of a clamping assembly according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of manufacturing a battery applied to a clamping device according to an embodiment of the present invention;

[0022] Figure 4 is a flow chart of a battery manufacturing method according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] 100. Clamping device;

[0025] 11. Clamping plate; 12. First pressurizing device; 13. Clamping assembly; 14. Guide member;

[0026] 21. Clamping plate; 22. Second pressurizing device; 23. Protruding portion;

[0027] 31. Battery. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] Among the related technologies, solid-state batteries have become the mainstream research direction due to their high safety and high energy density. Solid-state batteries need to gel the electrolyte inside the battery under certain external pressure and temperature conditions. In the process of external pressurization of the solid-state battery, the free electrolyte inside the solid-state battery is subject to external pressure, and the electrolyte is redistributed. Some of the free electrolyte will be squeezed to the air bag position and remain in the final sealing edge area of ​​the battery. The electrolyte in the final sealing edge area is gelled and solidified, and the gel-like substance remains in the final sealing edge. Due to the residual gel-like substance on the surface of the aluminum-plastic film at the final sealing edge of the battery, the aluminum-plastic film cannot be effectively heat-sealed, and there is a phenomenon of low heat sealing strength or ineffective heat sealing, which causes the risk of battery leakage and swelling, seriously affecting battery performance.

[0030] Reference below Figure 1-Figure 4 A clamping device according to an embodiment of the present invention is described.

[0031] The clamping device 100 for a battery according to the present invention comprises: a clamping plate 11, a first pressurizing device 12 and a clamping assembly 13, wherein the clamping plate 11 is constructed as a plurality of clamping plates arranged at intervals, and an installation space suitable for accommodating a battery 31 is formed between two adjacent clamping plates 11; the first pressurizing device 12 is arranged on the clamping plate 11, and the first pressurizing device 12 is suitable for pushing the plurality of clamping plates 11 to move in sequence from one end in the thickness direction toward the other end in the thickness direction close to each other to apply pressure to the battery 31; the clamping assembly 13 is movably arranged on at least one side in the thickness direction of each clamping plate 11, and the clamping assembly 13 can move along the thickness direction of the clamping plate 11 and is suitable for clamping and fixing the final sealing edge of the battery 31.

[0032] In some specific embodiments, the clamping device 100 is composed of a splint 11, a first pressurizing device 12 and a clamping assembly 13. The splint 11 is constructed as a plurality of splints 11 and the plurality of splints 11 are arranged at intervals from each other in the thickness direction. An installation space is formed between two adjacent splints 11. The battery 31 is accommodated in the installation space to ensure that the position of the battery 31 is stable during the pressurization process. The first pressurizing device 12 is arranged at one end of the plurality of splints 11 in the thickness direction. The first pressurizing device 12 can push the plurality of splints 11 at one end in the thickness direction to move toward the other end in the thickness direction in sequence to apply pressure to the battery 31. A clamping assembly 13 is also provided on at least one side of the splint 11 in the thickness direction. At least a portion of the clamping assembly 13 can move along the thickness direction to clamp and fix the final sealing edge of the battery 31, so that during the gel curing process of the battery 31, the electrolyte cannot enter the final sealing edge of the battery 31, so that there are no gel-state contaminants at the final sealing edge of the battery 31, thereby achieving effective final sealing at the final sealing edge of the battery 31.

[0033] The clamping device 100 according to the present invention clamps and fixes the battery 31 through a plurality of clamps 11, the first pressurizing device 12 can push the clamps 11 to apply pressure to the battery 31, and a clamping assembly 13 is further provided on at least one side of the clamps 11 in the thickness direction, and at least a portion of the clamping assembly 13 can move along the thickness direction to clamp and fix the final sealing edge of the battery 31, so that during the gel curing process of the battery 31, the electrolyte cannot enter the final sealing edge of the battery 31, so that there is no gel-state contaminant at the final sealing edge of the battery 31, thereby achieving effective final sealing of the final sealing edge of the battery 31.

[0034] According to some embodiments of the present invention, the clamping assembly 13 includes: a second pressurizing device 22 and a clamping plate 21, the second pressurizing device 22 is arranged on the clamping plate 11; the clamping plate 21 is arranged on at least one side in the thickness direction of each clamping plate 11 and is connected to the second pressurizing device 22, and a protrusion 23 protruding toward the direction away from the clamping plate 11 is formed on the clamping plate 21, the protrusion 23 can more accurately contact and clamp the final sealing edge of the battery 31 to prevent the electrolyte from being redistributed to the final sealing edge area of ​​the battery 31 during the gel process, thereby improving the sealing of the battery 31, and the second pressurizing device 22 can drive the clamping plate 21 to move along the thickness direction to realize the clamping and fixation of the final sealing edge of the battery 31 by the clamping plate 21.

[0035] According to some embodiments of the present invention, the protrusion 23 is configured as a flexible member.

[0036] In some specific embodiments, the raised portion 23 is made of an elastic material and can be constructed as a silicone sheet. The silicone sheet has a certain elasticity and deformation ability and can adapt to slight unevenness on the surface of the battery 31. The raised portion 23 can fit tightly against the final sealing edge of the battery 31 and provide uniform pressure distribution, thereby improving the sealing and contact quality of the clamping assembly 13 during the process of pressurizing the final sealing edge of the battery 31. In addition, the silicone sheet has good wear resistance and tear resistance. Even during repeated and long-term use, the silicone sheet can maintain good performance, thereby extending the service life of the clamping assembly 13. At the same time, the silicone sheet can be customized into various shapes and sizes according to actual needs to adapt to the final sealing edges of batteries 31 of different models and sizes, thereby improving the versatility and flexibility of the clamping device 100.

[0037] According to some embodiments of the present invention, the clamping assembly 13 further includes: a first buffer member, which is disposed between the clamping plate 21 and the second pressurizing device 22 .

[0038] In some specific embodiments, the first buffer member can be constructed as a spring, and the spring is installed between the clamping plate 21 and the second pressurizing device 22 as an elastic component. The spring can be constructed as one or more. The spring can provide a certain buffering effect, allowing the second pressurizing device 22 to have a certain compression space during the pressurization process of the clamping plate 21, ensuring that the clamping plate 21 clamps the final sealing area of ​​the battery 31 more gently, avoiding excessive pressure on the battery 31 and damaging the battery 31. The spring also helps to maintain a constant pressure of the clamping plate 21 on the final sealing area of ​​the battery 31, even during the pressurization process, it can ensure that the final sealing area of ​​the battery 31 is always stably clamped, preventing the electrolyte from being redistributed to the final sealing area of ​​the battery 31 during the gel process. At the same time, the spring can also provide elastic support, so that the clamping assembly 13 can adapt to batteries 31 of different sizes or shapes, ensuring that the final sealing area can be evenly pressurized.

[0039] According to some embodiments of the present invention, the second pressurizing device 22 is constructed as a cylinder, which includes: a cylinder body and a piston rod, the piston rod is movably arranged in the cylinder body, the movable end of the piston rod is connected to the clamping plate 21, and is suitable for pushing the clamping plate 21 to move along the thickness direction; or the second pressurizing device 22 is constructed as a linear motor, a driving shaft is provided on the linear motor, and the driving shaft is connected to the clamping plate 21 to drive the clamping plate 21 to make a linear motion along the thickness direction.

[0040] In some specific embodiments, the second pressurizing device 22 can be constructed as a cylinder or a linear motor. When the second pressurizing device 22 is constructed as a cylinder, the cylinder consists of a cylinder body and a piston rod. The piston rod can move axially in the cylinder body. The clamping plate 21 is connected to the free end of the piston rod. When compressed air enters the cylinder body, the piston rod extends outward under the action of gas pressure, thereby pushing the clamping plate 21 to move in the thickness direction to achieve clamping and fixation of the final sealing edge of the battery 31. The cylinder structure is simple, the manufacturing cost is low, and it is easy to maintain. When the second pressurizing device 22 is constructed as a linear motor, the linear motor directly converts electrical energy into linear motion. The drive shaft arranged on the linear motor is connected to the clamping plate 21, thereby directly pushing the clamping plate 21 to move linearly in the thickness direction through electromagnetic force to achieve clamping and fixation of the final sealing edge of the battery 31. The linear motor has a compact structure and no intermediate transmission mechanism. It can achieve high-speed and high-precision linear motion, and has a short response time and high energy conversion efficiency.

[0041] According to some embodiments of the present invention, a matching hole is formed on each clamping plate 11, and the clamping device 100 also includes: a guide member 14, the guide member 14 passes through the multiple matching holes respectively, and the outer peripheral wall of the guide member 14 is in contact with the inner peripheral wall of each matching hole to limit the movement of the multiple clamping plates 11 along the length and height directions.

[0042] In some specific embodiments, each splint 11 is provided with a matching hole that passes through the splint 11 in the thickness direction, and the guide member 14 passes through the matching holes provided on the multiple splints 11 in sequence, and the outer peripheral wall of the guide member 14 fits with the inner peripheral wall of each matching hole, so that when the first pressurizing device 12 pushes the splint 11 to move in the thickness direction, the guide member 14 limits the lateral and longitudinal movement of the splint 11, ensuring that the splint 11 only moves in the thickness direction when pressurizing the battery 31, that is, moves along the axial direction of the guide member 14, preventing the battery 31 from unnecessary displacement during pressurization, and ensuring that the battery 31 is subjected to more uniform force during the clamping process.

[0043] In addition, the movement of the clamp 11 becomes smoother and more precise through the guidance of the guide member 14, thereby avoiding the shaking of the clamp 11 during the pressurization process, thereby improving the stability and reliability of the entire clamping device 100 and ensuring the consistency of multiple batteries 31 during the pressurization process.

[0044] According to some embodiments of the present invention, the clamping device 100 further includes: a heating device, which is disposed in the clamping plate 11 and is used to heat the battery 31 .

[0045] In some specific embodiments, a heating device is further provided in the clamping device 100. The heating device can be constructed as a heating wire. The heating wire is provided in the clamping plate 11. The heating wire can exchange heat with the clamping plate 11 so that the temperature of the clamping plate 11 can quickly and evenly reach a preset temperature, thereby achieving heating of the battery 31.

[0046] According to some embodiments of the present invention, the clamping device 100 further includes: a pressure detection device, which is disposed at the other end of the plurality of clamps 11 in the thickness direction and is suitable for detecting the magnitude of the force applied by the clamps 11 to the battery 31 .

[0047] In some specific embodiments, the pressure detection device is arranged at the other end of the plurality of splints 11 in terms of thickness. The pressure detection device can monitor the pressure changes of the battery 31 during the pressurization process in real time to ensure that the surface pressure of the battery 31 reaches the surface pressure required by the technology, such as 0.1 MPa, which helps to control the pressure conditions of the battery 31 during the gel process and prevent overpressure or underpressure from causing damage to the battery 31. In addition, the pressure detection device can ensure whether the pressure is evenly distributed on the battery 31 by continuously monitoring the pressure on the battery 31, so as to ensure the stability of the curing process of the battery 31.

[0048] According to some embodiments of the present invention, the clamping device 100 further includes: a second buffer member, which is disposed on both sides of the clamping plate 11 in the thickness direction.

[0049] In some specific embodiments, second buffer members are respectively provided on both side surfaces of the splint 11 in the thickness direction. The second buffer members can be made of elastic materials such as silicone. In the process of the first pressurizing device 12 pushing the splint 11 to pressurize the battery 31, the second buffer member can avoid direct contact between the surface of the battery 31 and the splint 11, and prevent the splint 11 from scratching or damaging the surface of the battery 31, thereby maintaining the integrity of the appearance of the battery 31 and the functionality of the battery 31. In addition, the second buffer member can also ensure that the pressure applied by the splint 11 on the battery 31 can be evenly distributed on the surface of the battery 31, avoiding damage to the battery 31 caused by excessive local pressure, and ensuring the battery 31 during the curing process.

[0050] The following briefly describes a method for manufacturing the battery 31 according to the present invention.

[0051] The manufacturing method of the battery 31 group according to the present invention includes: after obtaining the final edge sealing signal of the battery 31, controlling the movement of the clamping assembly 13 according to the signal to clamp and fix the final edge sealing of the battery 31, and after the final edge sealing is clamped and fixed, driving the first pressurizing device 12 to push the clamping plate 11 to move to pressurize the battery 31 in the installation space.

[0052] In some specific embodiments, the battery 31 to be gelled is placed vertically into the clamping device 100 manually or automatically by a robot arm, the height of the battery 31 is adjusted so that the final edge sealing position is consistent with the height of the clamping plate 21, the second pressurizing device 22 is controlled to extend the clamping plate 21 so that the protrusion 23 of the clamping plate 21 contacts the final edge sealing area of ​​the battery 31, the first pressurizing device 12 is started to push the clamping plate 11 to slowly move toward the battery 31 and clamp the battery 31, and the clamping assembly 13 follows the battery 31 to press The plates move together, and the clamping assembly 13 can clamp and fix the battery 31 at the final sealing edge position first before the clamping plate 11. When the surface of the battery 31 is gradually squeezed by the clamping plate 11, the clamping assembly 13 continuously pressurizes the final sealing edge position of the battery 31 until the pressure detection device detects that the surface of the battery 31 is under pressure to the technical requirement of 0.1Mpa, and maintains the pressure; a heating device is provided in the clamping plate 11. After the pressurization is completed, the heating device is started to heat the clamping plate 11 to 60°C. Under this condition, the battery 31 is pressed The battery 31 undergoes a gelling process; after the battery 31 is clamped and heated by the clamping plate 11, after 5 minutes, the electrolyte inside the battery 31 has been redistributed and stabilized under the pressure of the clamping plate 11 and the clamping assembly 13, and the second pressurizing device 22 is closed, the clamping plate 21 is separated from the aluminum-plastic film of the battery 31, so that the final sealing edge of the battery 31 is in a non-clamped state. Since the electrolyte inside the battery 31 is distributed stably and no other external pressure acts on the surface of the battery 31, the electrolyte inside the battery 31 will not re-enter the final sealing edge. During the gelling process, the final sealing edge will not be contaminated by the gel material, and the gas generated during the gelling process can be discharged into the air bag area through the final sealing edge; the battery 31 is pressurized and heated in the clamping device 100 for a duration of 4 hours. After the time is up, the heating function of the clamping plate 11 is turned off and the clamping plate 11 of the clamping device 100 is opened, and the battery 31 is taken out vertically and cooled and placed; after the battery 31 is cooled and placed, the subsequent charging and discharging process is carried out according to the technical requirements and the final sealing edge heat sealing is completed.

[0053] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In the description of the present invention, "first feature" or "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more.

[0055] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0056] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0057] In the description of this specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention.

[0058] In this specification, the schematic representations 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.

[0059] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clamping device for a battery, characterized in that: include: A clamping plate (11), wherein the clamping plates (11) are configured to be arranged in a plurality at intervals, and an installation space suitable for accommodating a battery (31) is formed between two adjacent clamping plates (11); A first pressurizing device (12), the first pressurizing device (12) being arranged on the clamping plate (11), the first pressurizing device (12) being adapted to push the plurality of clamping plates (11) to move in sequence from one end in the thickness direction toward the other end in the thickness direction so as to be close to each other and apply pressure to the battery; A clamping assembly (13) is movably arranged on at least one side of each clamping plate (11) in the thickness direction, and the clamping assembly (13) can move along the thickness direction of the clamping plate (11) and is suitable for clamping and fixing the final sealing edge of the battery.

2. The battery clamping device according to claim 1, characterized in that: The clamping assembly (13) comprises: A second pressurizing device (22), wherein the second pressurizing device (22) is arranged on the clamping plate (11); A clamping plate (21), wherein the clamping plate (21) is arranged on at least one side in the thickness direction of each clamping plate (11) and is connected to the second pressurizing device (22), and a protrusion (23) protruding in a direction away from the clamping plate (11) is formed on the clamping plate (21), wherein the second pressurizing device (22) is suitable for driving the clamping plate (21) to move in the thickness direction.

3. The battery clamping device according to claim 2, characterized in that: The protrusion (23) is constructed as a flexible member.

4. The battery clamping device according to claim 2, characterized in that: The clamping assembly (13) further comprises: A first buffer member is arranged between the clamping plate (21) and the second pressurizing device (22).

5. The battery clamping device according to claim 2, characterized in that: The second pressurizing device (22) is constructed as a cylinder, which includes: a cylinder body and a piston rod, wherein the piston rod is movably arranged in the cylinder body, and the movable end of the piston rod is connected to the clamping plate (21) and is suitable for pushing the clamping plate (21) to move along the thickness direction; or the second pressurizing device (22) is constructed as a linear motor, and a driving shaft is arranged on the linear motor, and the driving shaft is connected to the clamping plate (21) to drive the clamping plate (21) to make a linear motion along the thickness direction.

6. The battery clamping device according to claim 5, characterized in that: A matching hole is formed on each of the clamping plates (11), and the clamping device further comprises: a guide member (14), wherein the guide member (14) passes through the plurality of matching holes respectively, and the outer peripheral wall of the guide member (14) is fitted with the inner peripheral wall of each of the matching holes to limit the movement of the plurality of clamping plates (11) in the length and height directions.

7. The battery clamping device according to claim 1, characterized in that: Also includes: A heating device is arranged in the clamping plate (11), and is used to heat the battery.

8. The battery clamping device according to claim 1, characterized in that: Also includes: A pressure detection device is provided at the other end of the plurality of clamps (11) on the thickness side and is suitable for detecting the magnitude of the force applied by the clamps (11) to the battery.

9. The battery clamping device according to claim 2, characterized in that: Also includes: A second buffer member, wherein the second buffer member is arranged on both sides of the clamping plate (11) in the thickness direction.

10. A method for manufacturing a battery applied to the clamping device according to any one of claims 1 to 9, characterized in that: include: After obtaining the battery final edge sealing signal, the clamping assembly (13) is controlled to move according to the signal to clamp and fix the final edge sealing of the battery, and after the final edge sealing is clamped and fixed, the first pressurizing device (12) is driven to push the clamping plate (11) to move to pressurize the battery in the installation space.

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