Pressurizing device and pressurizing equipment for battery module

Abstract

The utility model provides a pressurizing device and pressurizing equipment for a battery module. The pressurizing device of the battery module comprises a limiting tool which is provided with a limiting space and an avoiding channel communicated with the limiting space, and the limiting space is used for accommodating the battery module; the pressing mechanism comprises a plurality of pressing components which are arranged in parallel in the first direction, and the plurality of pressing components are movably arranged in the avoiding channel in the second direction, so that the plurality of pressing components can be pressed on or away from the battery module through the avoiding channel; the locking mechanism comprises a plurality of locking components, the plurality of locking components and the plurality of pressing components are correspondingly arranged, and each locking component has a locking state for locking the corresponding pressing component on the limiting tool and an unlocking state for unlocking the corresponding pressing component and the limiting tool. According to the technical scheme provided by the utility model, the problem that the pressurizing device of the battery module in the prior art is difficult to achieve the uniform and flexible pressurizing effect on the battery module is solved.

Description

Battery module pressurization device and pressurization equipment Technical Field

[0001] This utility model relates to the field of soft-pack battery assembly technology, and more specifically, to a pressurizing device and pressurizing equipment for a battery module. Background Technology

[0002] All-solid-state pouch cells require a pressure of 1MPa to 5MPa in the normal direction of the electrode surface. To achieve this design pressure value, a common method is to sandwich a piece of elastic material with high elasticity-strain between the cells, stack them into a module, and then set a side plate 4 on each side of the module. Finally, the side plate 4 is compressed with a pressure device, and then the binding strap 2 is put on. Releasing the pressure device will obtain the high stress inside the module. Specifically, in the battery modules shown in Figures 1 and 2, before the strap 2 is put on, because the elastic material is not compressed, the total length of the stack 3 is greater than the inner length of the strap 2. In order to smoothly put the strap 2 on the stack 3, it is necessary to use a pressure device to compress the length of the stack 3 to be less than the inner length of the strap 2 so that the strap 2 can be easily put on (as shown in Figure 1). However, since the required pressure is very large, for example, for a module with a large surface area of ​​400mm×110mm cells, the pressure corresponding to 1MPa to 5MPa is a force of T4 to 25T. In order to smoothly put on the strap 2, such a large force can only be applied to the middle of the side plate 4, which often leads to severe deformation of the side plate 4 under huge pressure (as shown in Figure 1).

[0003] To address the issue of end plate deformation, the binding strap 2 can be divided into multiple thinner binding straps 2. Then, multiple pressure heads 5 can be used to press the side plate 4 in sections, releasing each pressure head 5 individually (i.e., each pressure head 5 is independently controlled), and the binding strap 2 can be inserted section by section (as shown in Figure 2). However, the pressure head 5 generally requires hydraulic cylinders or electric cylinders (drive structure 6) to control its movement. Hydraulic cylinders or electric cylinders that can generate significant pressure are very large. If multiple hydraulic cylinders or electric cylinders are used to independently control multiple pressure heads 5, interference problems will occur (as shown in Figure 2). Thus, while introducing multiple independently controlled pressure heads 5 can reduce the deformation of the battery module side plate, the size limitations of the hydraulic cylinders or electric cylinders make it difficult for existing equipment to simultaneously arrange multiple drive structures 6 on both sides of the module. This makes it difficult to achieve the operation of pressing and releasing multiple pressure heads 5 separately, and consequently, it is difficult to achieve a uniform and flexible pressurization effect on the battery module. Summary of the Invention

[0004] The main objective of this invention is to provide a pressurizing device and equipment for battery modules, so as to solve the problem that the existing pressurizing devices for battery modules are difficult to achieve a uniform and flexible pressurization effect on the battery modules.

[0005] To achieve the above objectives, this utility model provides a pressurizing device for a battery module, comprising: a limiting fixture having a limiting space and a clearance channel communicating with the limiting space, the limiting space being used to accommodate the battery module; a pressing mechanism including a plurality of pressing members arranged in parallel along a first direction, the plurality of pressing members being movably disposed in the clearance channel along a second direction, so that the plurality of pressing members can press against or move away from the battery module via the clearance channel; and a locking mechanism including a plurality of locking members, the plurality of locking members being disposed corresponding to the plurality of pressing members, each locking member having a locked state of locking the corresponding pressing member in the limiting fixture and an unlocked state of unlocking the corresponding pressing member from the limiting fixture.

[0006] Furthermore, the limiting fixture is provided with multiple through slots, which are corresponding to multiple locking components. Each through slot is located above the corresponding clamping component. The clamping component is provided with a locking slot. Multiple locking components can be inserted into multiple locking slots through multiple through slots, so that multiple clamping components can be locked onto the limiting fixture respectively.

[0007] Furthermore, the locking groove is a through groove that passes through the clamping component. The limiting fixture is also provided with multiple grooves, which are corresponding to multiple locking components. The grooves are located below the corresponding clamping components, and each locking component passes through the corresponding through groove, the corresponding locking groove, and the corresponding groove in sequence.

[0008] Furthermore, the clamping component includes a clamping body and a clamping head. The clamping head is connected to the side of the clamping body facing the limiting space. Along the first direction, the clamping head has a first side and a second side that are arranged opposite to each other. At least one of the first side and the second side is an inclined surface. Along the second direction, from the clearance channel to the limiting space, the distance between the first side and the second side gradually decreases.

[0009] Furthermore, at least a portion of the first side is an inclined surface that forms an angle with the second direction, the second side is parallel to the second direction, and the pressing head is also provided with an abutting plane for connecting the first side and the second side, the abutting plane being parallel to the first direction.

[0010] Furthermore, there are two clamping mechanisms, located on both sides of the limiting space along the second direction; there are two clearance channels, each corresponding to one of the two clamping mechanisms; and there are two locking mechanisms, each corresponding to one of the two clamping mechanisms.

[0011] Furthermore, the limiting fixture includes: a support platform; two main limiting components arranged at intervals along the second direction on the support platform, each main limiting component having an avoidance passage; and an auxiliary limiting component covering the two main limiting components, the two main limiting components, the support platform, and the auxiliary limiting component forming a limiting space.

[0012] Furthermore, the support platform has a clearance area and a support area for supporting the battery module, with the support area protruding from the clearance area.

[0013] Furthermore, the two main limiting members are detachably connected to the support platform; and / or, the auxiliary limiting member is detachably connected to the two main limiting members.

[0014] According to another aspect of the present invention, the present invention provides a pressurizing device for a battery module, comprising: a driving device having a driving end; wherein the driving end of the aforementioned pressurizing device for the battery module is used to drive a pressing mechanism to move along a second direction.

[0015] By applying the technical solution of this utility model, the limiting space can provide an assembly position for the battery module, and the clearance channel allows multiple clamping components to move in the second direction. These multiple clamping components are arranged side-by-side in the first direction, allowing multiple clamping components to act on the battery module simultaneously, achieving multi-point clamping and multi-point release operations. This effectively reduces the deformation of the side plate under high pressure and enhances the structural stability and consistency of the battery module. Furthermore, by setting multiple locking components, each with a locking state for locking the corresponding clamping component in the limiting fixture and an unlocking state for unlocking the corresponding clamping component from the limiting fixture, only one driving device is needed to drive the clamping mechanism. This also allows the user to adjust or release a single clamping component (clamping point) without affecting other clamping components (clamping points), selectively operating on single or partial clamping points. This greatly facilitates the installation process of the straps, thereby achieving a uniform and flexible pressure effect on the battery module. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 shows a schematic diagram of the structure of a side plate of a battery module using a single pressure head in the prior art;

[0018] Figure 2 shows a schematic diagram of the side plate of a battery module using multiple pressure heads and multiple drive structures in the prior art;

[0019] Figure 3 shows a schematic diagram of an embodiment of the pressurization device for the battery module of this utility model;

[0020] Figure 4 shows an exploded structural diagram of the pressurization device for the battery module in Figure 3;

[0021] Figure 5 shows a partial structural schematic diagram of the pressurization device of the battery module in Figure 3;

[0022] Figure 6 shows a partial structural schematic diagram of the pressurization device of the battery module in Figure 3;

[0023] Figure 7 shows a schematic diagram of the pressing mechanism of the pressurizing device for the battery module in Figure 3.

[0024] The above figures include the following reference numerals:

[0025] 1. Battery module; 2. Strap; 3. Stacked body; 4. Side plate; 5. Pressure head; 6. Drive structure; 10. Limiting fixture; 11. Limiting space; 12. Clearance channel; 13. Through groove; 14. Groove; 15. Support platform; 151. Clearance area; 152. Support area; 16. Main limiting component; 17. Auxiliary limiting component; 20. Pressing mechanism; 21. Pressing component; 211. Pressing body; 213. Pressing head; 214. First side; 215. Second side; 216. Abutment plane; 22. Locking groove; 30. Locking mechanism; 31. Locking component. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, as shown in Figure 3, in the embodiment of this utility model, the first direction is the width direction of the battery module 1, that is, multiple cells are stacked sequentially along the first direction, the second direction is the length direction of the battery module 1, the two side plates of the battery module 1 are spaced apart along the second direction, and the first direction and the second direction are perpendicular to each other.

[0028] As shown in Figures 3 to 7, an embodiment of this utility model provides a pressurizing device for a battery module. The pressurizing device for the battery module includes: a limiting fixture 10 having a limiting space 11 and a clearance channel 12 communicating with the limiting space 11, the limiting space 11 being used to accommodate the battery module 1; a pressing mechanism 20 including a plurality of pressing members 21 arranged in parallel along a first direction, the plurality of pressing members 21 being movably arranged in a second direction within the clearance channel 12 so that the plurality of pressing members 21 can be pressed against or away from the battery module 1 via the clearance channel 12; and a locking mechanism 30 including a plurality of locking members 31, the plurality of locking members 31 being correspondingly arranged with the plurality of pressing members 21, each locking member 31 having a locked state of locking the corresponding pressing member 21 in the limiting fixture 10 and an unlocked state of unlocking the corresponding pressing member 21 from the limiting fixture 10.

[0029] In the above technical solution, the limiting space 11 can provide an assembly position for the battery module 1, and the clearance channel 12 allows multiple clamping members 21 to move in the second direction therein. The multiple clamping members 21 are arranged side-by-side in the first direction, thus enabling multiple clamping members 21 to act on the battery module 1 simultaneously, achieving multi-point clamping and multi-point release operations on the battery module 1. This effectively reduces the deformation of the side plate under high pressure and enhances the structural stability and consistency of the battery module 1. Furthermore, by setting multiple locking members 31, each locking member 31 has... The device has a locked state where the corresponding clamping component 21 is locked in the limiting fixture 10, and an unlocked state where the corresponding clamping component 21 is unlocked from the limiting fixture 10. In this way, only one drive device is needed to drive the clamping mechanism 20. It also allows the user to adjust or release a certain clamping component 21 (clamping point) individually without affecting other clamping components 21 (clamping points), so as to selectively operate on a single or partial clamping point. This greatly facilitates the installation process of the strap, thereby achieving a uniform and flexible pressure effect on the battery module 1.

[0030] In one embodiment, the pressing device for the battery module may not have a locking mechanism; instead, it uses two pressure cylinders, one controlling four pressure heads and the other controlling three. This significantly reduces the deformation of the side plates. In this application, all seven pressure heads can be controlled individually, resulting in even smaller deformation of the side plates. This reduces the amount of material used (thickness) in the side plates, thereby reducing weight and cost. Therefore, the more precise the control of the pressure heads, the better.

[0031] As shown in Figures 4 and 6, in the embodiment of this utility model, the limiting fixture 10 is provided with a plurality of through slots 13, and the plurality of through slots 13 are correspondingly provided with a plurality of locking members 31. Each through slot 13 is located above the corresponding pressing member 21. The pressing member 21 is provided with a locking slot 22. The plurality of locking members 31 can be inserted into the plurality of locking slots 22 through the plurality of through slots 13 respectively, so that the plurality of pressing members 21 can be locked on the limiting fixture 10 respectively.

[0032] With the above configuration, multiple locking components 31 can be inserted into the locking grooves 22 of the clamping components 21 through the corresponding through grooves 13, thereby realizing the separate locking of multiple clamping components 21 on the limiting fixture 10. In this way, each clamping component 21 can be locked or released independently through the through groove 13 above it and the locking groove 22 inside it. This allows the operator to selectively apply or release pressure to specific parts of the battery module, greatly improving the flexibility and accuracy of the pressurization operation. Moreover, by inserting and pulling out the locking components 31, only one drive device is needed to control multiple clamping components 21, simplifying the operation process, reducing the complexity of operation, and improving production efficiency.

[0033] Specifically, in the embodiments of this utility model, the compression amount of the pressed battery module 1 can be adjusted by changing the position of the locking groove 22 on the pressing member 21 in the second direction (i.e., by adjusting the distance between the locking groove 22 and the pressing member 21 on the side facing the battery module 1).

[0034] Preferably, in the embodiments of this utility model, the pressing member 21 is a pressing block, and the locking member 31 is a PIN block, that is, a locking block or a locking pin.

[0035] As shown in Figures 5 and 6, in the embodiment of this utility model, the locking groove 22 is a through groove that passes through the pressing member 21. The limiting tooling 10 is also provided with a plurality of grooves 14, which are correspondingly arranged with a plurality of locking members 31. The grooves 14 are located below the corresponding pressing member 21, and each locking member 31 is sequentially inserted into the corresponding through groove 13, the corresponding locking groove 22 and the corresponding groove 14.

[0036] With the above settings, the locking component 31 passes through the through groove 13 on the limiting fixture 10, the locking groove 22 of the pressing component 21, and the groove 14 of the limiting fixture 10 in sequence, which can ensure that the locking is more stable and avoid the displacement or instability of the pressing component 21 under high pressure.

[0037] In one embodiment, the groove 14 may not be provided, and the locking member 31 may be sequentially inserted into the corresponding through groove 13 and the corresponding locking groove 22.

[0038] As shown in Figures 6 and 7, in an embodiment of this utility model, the pressing member 21 includes a pressing body 211 and a pressing head 213. The pressing head 213 is connected to the side of the pressing body 211 facing the limiting space 11. Along the first direction, the pressing head 213 has a first side 214 and a second side 215 arranged opposite to each other. At least one of the first side 214 and the second side 215 is an inclined surface. Along the second direction, from the avoidance channel 12 to the limiting space 11, the distance between the first side 214 and the second side 215 gradually decreases.

[0039] With the above configuration, the inclined side of the clamping head 213 can form an avoidance notch at the clamping head 213. During the process of clamping the battery module 1 and binding the strap, the strap is installed from the notch side, and the notch can avoid the strap to ensure the smooth installation of the strap.

[0040] As shown in Figures 6 and 7, in an embodiment of the present invention, at least part of the first side surface 214 is an inclined surface that is set at an angle to the second direction, the second side surface 215 is parallel to the second direction, and the pressing head 213 is also provided with an abutting plane 216 for connecting the first side surface 214 and the second side surface 215, the abutting plane 216 being parallel to the first direction.

[0041] With the above configuration, the clamping head 213 can effectively clamp on one side (the contact plane 216 abuts against the battery module 1) to form a clamped position, while the other side remains suspended to form a suspended position. Thus, when the clamping head 213 reverses (rotates in a second direction), the original clamped and suspended positions can be interchanged. This allows a single clamping head 213 to effectively operate on two different positions. For example, if seven such clamping heads 213 are distributed within a defined space, it effectively provides 14 clamping and depressurization control points, essentially dividing the module side panel into 14 independently adjustable sections, significantly enhancing the precision and flexibility of pressure control over the module side panel.

[0042] In one embodiment, both the first side surface 214 and the second side surface 215 can be inclined surfaces.

[0043] As shown in Figures 3 to 5, in the embodiments of this utility model, there are two pressing mechanisms 20, which are located on both sides of the limiting space 11 along the second direction; there are two clearance channels 12, which are correspondingly arranged with the two pressing mechanisms 20; and there are two locking mechanisms 30, which are correspondingly arranged with the two pressing mechanisms 20.

[0044] With the above configuration, the two clamping mechanisms 20 ensure that both sides of the battery module 1 are subjected to balanced clamping force and clamp the two side plates of the battery module 1 to facilitate the binding.

[0045] Preferably, in the embodiments of this utility model, the two pressing mechanisms 20 are arranged symmetrically, and similarly, the two clearance channels 12 are arranged symmetrically, and the two locking mechanisms 30 are arranged symmetrically.

[0046] Specifically, in the embodiments of this utility model, the pressing process is as follows: a hydraulic cylinder (or electric cylinder) is set on each side of the limiting space 11. After the hydraulic cylinder (or electric cylinder) is started, it pushes all the pressing components 21 (pressing blocks) to press the battery module 1. After pressing in place, multiple locking components 31 are inserted respectively. After the hydraulic cylinder (or electric cylinder) is removed, due to the locking effect of the multiple locking components 31, the battery module 1 is still pressed by the multiple pressing components 21 on both sides. When it is necessary to loosen a certain clamping component 21, first activate the hydraulic cylinders (or electric cylinders) on both sides to clamp all the clamping components 21, so that the locking component 31 is loosened to the point where it can be manually removed. Then remove the locking component 31 corresponding to the clamping component 21 that needs to be loosened, and then release the hydraulic cylinder (or electric cylinder). The clamping component 21 that has not removed the locking component 31 will still press against the battery module 1. The clamping component 21 that has removed the locking component 31 can be freely removed. In this way, the strap can be moved to the designated position. By operating in sequence, the side plate can be precisely clamped while the strap is put on.

[0047] As shown in Figure 4, in an embodiment of this utility model, the limiting fixture 10 includes: a support platform 15; two main limiting members 16, which are spaced apart on the support platform 15 along a second direction, and each main limiting member 16 is provided with an avoidance channel 12; and an auxiliary limiting member 17, which covers the two main limiting members 16. The two main limiting members 16, the support platform 15, and the auxiliary limiting member 17 form a limiting space 11.

[0048] In the above technical solution, the support platform 15 serves as the basic platform to support the entire device and battery module 1. The two main limiting members 16 are fixed at intervals on the support platform 15 along the second direction. In this way, the two main limiting members 16 form a channel through which the strap can pass freely, ensuring the efficiency and smoothness of the strap installation and providing a safe operating environment for the operator. The limiting space 11 formed by the two main limiting members 16, the support platform 15 and the auxiliary limiting member 17 effectively limits the position of the battery module 1, preventing it from shifting during the pressurization process.

[0049] Preferably, in the embodiments of this utility model, the auxiliary limiting member 17 is a cover plate, which is located above the battery module 1 and spaced apart from the battery module 1, and the cover plate is provided with a plurality of through grooves 13; the main limiting member 16 is a limiting block, and the limiting block is provided with a plurality of grooves 14.

[0050] As shown in Figure 5, in an embodiment of the present invention, the support platform 15 has a clearance area 151 and a support area 152 for supporting the battery module 1, with the support area 152 protruding from the clearance area 151.

[0051] With the above configuration, the protrusion of the support area 152 not only provides a stable support platform for the battery module 1, but also the introduction of the avoidance area 151 creates enough space for the strap to move, allowing it to flexibly pass through during installation. This ensures that the strap or other components can pass through unimpeded during pressurization, without being restricted by the structure of the support platform 15, avoiding direct collision or friction with the support platform 15, and greatly reducing the complexity of strap installation and the potential risk of damage.

[0052] Specifically, as shown in Figure 5, in this embodiment of the present invention, the support area 152 is an I-shaped structure. This configuration can enhance the stability and load-bearing capacity of the battery module 1 when placed. The I-shaped structure typically consists of a left beam, a right beam, and a central crossbeam. The clearance area 151 is located at the gaps on both sides of the central crossbeam of the I-shaped structure. Its purpose is to provide sufficient space for the insertion and removal of the straps, avoiding direct contact between the straps and the support platform 15, thereby simplifying the installation process of the straps and improving assembly efficiency.

[0053] It should be noted that, as shown in Figure 5, in the embodiment of this utility model, both the avoidance area 151 and the avoidance area 151 are located within the limiting space 11.

[0054] In one embodiment, the support region 152 may also include only the left and right beams.

[0055] As shown in Figure 4, in an embodiment of this utility model, the two main limiting members 16 are detachably connected to the support platform 15; and / or, the auxiliary limiting member 17 is detachably connected to the two main limiting members 16.

[0056] With the above configuration, on the one hand, the detachable connection method makes equipment maintenance simpler and faster. When the main limiting component 16 or the auxiliary limiting component 17 is worn or malfunctions, it can be quickly replaced without completely disassembling the equipment, reducing maintenance costs and downtime. On the other hand, since the main limiting component 16 and the auxiliary limiting component 17 can be disassembled and assembled independently, the position of the main limiting component 16 and the shape of the auxiliary limiting component 17 can be adjusted according to the specific size and shape of the battery module 1, thereby achieving adaptation to battery modules 1 of different sizes and types and improving the versatility of the assembly line.

[0057] It should be noted that, in the embodiments of this utility model, by dividing the pressure head into multiple parts and locking the multiple pressure heads with multiple PIN blocks, the operation of pressing and releasing multiple pressure heads can be realized by a single hydraulic cylinder (or electric cylinder), thereby solving the problem of local compression deformation of the side plate of the battery module to the greatest extent. This greatly simplifies the pressing equipment, significantly shortens the equipment development time, and greatly simplifies and accelerates the product design, development and verification process.

[0058] It should be noted that in the embodiments of this utility model, the pressure head can be divided into multiple independent ones, and each pressure head and the limiting fixture can be locked and unlocked separately by mechanical means. When it is necessary to lock all the pressure heads or unlock one of the pressure heads, it is only necessary to push all the pressure heads at the same time with the hydraulic cylinder (or electric cylinder) to loosen the locking mechanism of the pressure head. After locking or unlocking the corresponding pressure head, the hydraulic cylinder (or electric cylinder) can be released to achieve the purpose of finely controlling the pressure head separately.

[0059] An embodiment of this utility model provides a pressurizing device for a battery module, including: a driving device having a driving end; the driving end of the aforementioned pressurizing device for the battery module is used to drive the pressing mechanism 20 to move along a second direction.

[0060] Preferably, in the embodiments of this utility model, the driving device can be a hydraulic cylinder or an electric cylinder. The pressurizing device of the battery module 1 also includes a driving plate. The driving plate is connected to the driving end and is used to abut against multiple pressing members 21 to provide a stable and evenly distributed force transmission platform. When the driving plate of the driving device moves forward, its front end face will contact and apply force to multiple pressing heads 213 of the pressing mechanism 20. The multiple pressing heads 213 then transmit the force to the side plate of the battery module 1 to achieve the pressing of the battery module 1.

[0061] Preferably, in the embodiments of this utility model, there are two driving devices, and the two driving devices are respectively arranged corresponding to the two pressing mechanisms 20.

[0062] In embodiments of this invention, multiple pressure heads can be individually controlled by a single hydraulic cylinder (or electric cylinder), and the number of pressure heads can be controlled up to fourteen.

[0063] The pressurizing device for the battery module 1 described above has all the advantages of the pressurizing device for the battery module described above, which will not be repeated here.

[0064] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: the limiting space can provide an assembly position for the battery module, the clearance channel allows multiple clamping components to move in the second direction, and the multiple clamping components are arranged side by side in the first direction. In this way, multiple clamping components can act on the battery module at the same time to realize multi-point clamping and multi-point release operations on the battery module, effectively reducing the deformation of the side plate under high pressure and enhancing the structural stability and consistency of the battery module; and by setting multiple locking components, each locking component has a locking state of locking the corresponding clamping component in the limiting fixture and an unlocking state of unlocking the corresponding clamping component from the limiting fixture. In this way, only one driving device is needed to drive the clamping mechanism, and users can adjust or release a certain clamping component (clamping point) individually without affecting other clamping components (clamping points) to selectively operate on a single or partial clamping point, which greatly facilitates the installation process of the strap, thereby achieving a uniform and flexible pressure effect on the battery module.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pressurization device for a battery module, characterized in that, include: A limiting fixture (10) has a limiting space (11) and a clearance channel (12) communicating with the limiting space (11), the limiting space (11) being used to accommodate a battery module (1); a clamping mechanism (20) includes a plurality of clamping members (21) arranged in parallel along a first direction, the plurality of clamping members (21) being movably arranged in the clearance channel (12) along a second direction, so that the plurality of clamping members (21) can be clamped to or away from the battery module (1) through the clearance channel (12); a locking mechanism (30) includes a plurality of locking members (31), the plurality of locking members (31) being correspondingly arranged with the plurality of clamping members (21), each of the locking members (31) having a locking state that locks the corresponding clamping member (21) to the limiting fixture (10) and an unlocking state that unlocks the corresponding clamping member (21) from the limiting fixture (10).

2. The pressurization device for the battery module according to claim 1, characterized in that, The limiting fixture (10) is provided with a plurality of through slots (13), and the plurality of through slots (13) are correspondingly provided with a plurality of locking members (31). Each through slot (13) is located above the corresponding clamping member (21). The clamping member (21) is provided with a locking groove (22). The plurality of locking members (31) can be inserted into the plurality of locking grooves (22) through the plurality of through slots (13) respectively, so that the plurality of clamping members (21) can be locked on the limiting fixture (10) respectively.

3. The pressurization device for the battery module according to claim 2, characterized in that, The locking groove (22) is a through groove that passes through the clamping member (21). The limiting fixture (10) is also provided with a plurality of grooves (14). The plurality of grooves (14) are correspondingly arranged with the plurality of locking members (31). The grooves (14) are located below the corresponding clamping member (21). Each locking member (31) is sequentially inserted into the corresponding through groove (13), the corresponding locking groove (22), and the corresponding groove (14).

4. The pressurizing device for the battery module according to any one of claims 1 to 3, characterized in that, The clamping member (21) includes a clamping body (211) and a clamping head (213). The clamping head (213) is connected to the side of the clamping body (211) facing the limiting space (11). Along a first direction, the clamping head (213) has a first side surface (214) and a second side surface (215) arranged opposite to each other. At least one of the first side surface (214) and the second side surface (215) is an inclined surface. Along a second direction, from the clearance channel (12) to the limiting space (11), the distance between the first side surface (214) and the second side surface (215) gradually decreases.

5. The pressurizing device for the battery module according to claim 4, characterized in that, At least a portion of the first side (214) is an inclined surface that is angled to the second direction, the second side (215) is parallel to the second direction, and the pressing head (213) is also provided with an abutting plane (216) for connecting the first side (214) and the second side (215), the abutting plane (216) being parallel to the first direction.

6. The pressurizing device for the battery module according to any one of claims 1 to 3, characterized in that, There are two clamping mechanisms (20), and along the second direction, the two clamping mechanisms (20) are respectively located on both sides of the limiting space (11); there are two clearance channels (12), and the two clearance channels (12) are respectively arranged corresponding to the two clamping mechanisms (20); there are two locking mechanisms (30), and the two locking mechanisms (30) are respectively arranged corresponding to the two clamping mechanisms (20).

7. The pressurizing device for the battery module according to any one of claims 1 to 3, characterized in that, The limiting fixture (10) includes: a support platform (15); two main limiting members (16) arranged at intervals along the second direction on the support platform (15), and each main limiting member (16) is provided with the avoidance channel (12); and an auxiliary limiting member (17) covering the two main limiting members (16), the two main limiting members (16), the support platform (15) and the auxiliary limiting member (17) forming the limiting space (11).

8. The pressurizing device for the battery module according to claim 7, characterized in that, The support platform (15) has a clearance area (151) and a support area (152) for supporting the battery module (1), the support area (152) protruding from the clearance area (151).

9. The pressurizing device for the battery module according to claim 7, characterized in that, The two main limiting members (16) are detachably connected to the support platform (15); and / or, the auxiliary limiting member (17) is detachably connected to the two main limiting members (16).

10. A pressurization device for a battery module, characterized in that, include: A driving device having a driving end; a pressurizing device for a battery module according to any one of claims 1 to 9, wherein the driving end is used to drive the pressing mechanism (20) to move along the second direction.

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