Module pressing device and pressing method therefor

Abstract

The present application discloses a module pressing device and a pressing method therefor. The module pressing device is provided with a pressing workstation for maintaining pressure on a battery module, the bottom of which is bonded to a heat dissipation plate. The module pressing device comprises a conveying line, a pressing apparatus, and a control apparatus. The conveying line passes through the pressing workstation and is used for conveying the battery module. The pressing apparatus is arranged corresponding to the pressing workstation, and comprises a jacking mechanism and a pressing mechanism opposite to each other in a first direction. The jacking mechanism is provided with a plurality of jacking portions movable in the first direction. The plurality of jacking portions are arranged in a second direction and are used to jack up the heat dissipation plate. The pressing mechanism is used to tightly press the battery module. The control apparatus is electrically connected to the jacking mechanism and the pressing mechanism, so as to control the jacking mechanism and the pressing mechanism to act. The heat dissipation plate is supported by means of the jacking mechanism, which cooperates with the pressing mechanism applying pressure to the battery module, so that thermally conductive adhesive coated between the heat dissipation plate and the battery module is evenly spread by means of pressing, thereby mitigating uneven coating of the thermally conductive adhesive and improving the heat dissipation capability of the battery module.

Description

Module pressurizing equipment and pressurizing method thereof

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 29, 2024, with application number 202410115172.7 and invention name “Module pressurizing equipment and pressurizing method thereof”, the entire contents of which are incorporated by reference into the application. Technical Field

[0002] The present application relates to the technical field of battery module pressurization and static placement, and in particular to a module pressurization device and a pressurization method thereof. Background Art

[0003] Power batteries generally include battery modules and water-cooling plates. The water-cooling plates are used to cool the battery modules in use. During the production process of power batteries, a water-cooling plate installation process is generally required. During this process, thermal conductive adhesive needs to be applied between the water-cooling plate and the battery module to improve the thermal conductivity of the water-cooling plate. However, in the existing technology, the thermal conductive adhesive is prone to uneven coating, resulting in poor heat dissipation performance of the produced power batteries. Technical Solutions

[0004] The main purpose of this application is to propose a module pressurizing device and a pressurizing method thereof, which improve the poor heat dissipation performance of the power battery caused by uneven coating of thermal conductive adhesive during the production process of the power battery.

[0005] In a first aspect, the present application provides a module pressurizing device having a pressurizing station for maintaining pressure on a battery module having a heat sink bonded to the bottom. The module pressurizing device includes:

[0006] A conveyor line passes through the pressurizing station, and is used to convey the battery module;

[0007] A pressurizing device is provided corresponding to the pressurizing station, the pressurizing device includes a supporting mechanism and a pressurizing mechanism opposite to each other along a first direction, the supporting mechanism has a plurality of supporting parts movable along the first direction, the plurality of supporting parts are arranged along a second direction, and are used to lift and support the heat dissipation plate to separate the battery module from the conveyor line, and the pressurizing mechanism is used to compress the battery module; and

[0008] The control device is electrically connected to the supporting mechanism and the pressing mechanism to control the actions of the supporting mechanism and the pressing mechanism.

[0009] In the technical solution of the embodiment of the present application, the battery module that has been bonded with the heat sink in the upstream process can be automatically transported to the pressurizing station through the conveyor line, and the transfer efficiency is high. At the pressurizing station, the control device can first control the supporting mechanism to support the heat sink from the bottom through multiple supporting parts, so that the battery module is separated from the conveyor line. In this process, since the multiple supporting parts are arranged along the second direction, a supporting force can be applied to the heat sink from various positions, thereby effectively preventing the heat sink from being deformed due to local lack of support during the pressurization process, thereby improving the quality rate of the battery module. Then the pressurizing mechanism is controlled to pressurize the battery module from the top, so that the thermal conductive adhesive coated between the heat sink and the battery module is evenly pressed open under the action of pressure, the uneven coating of the thermal conductive adhesive is improved, and the heat dissipation capacity of the battery module is improved. Not only that, since the supporting mechanism supports the battery module from the conveyor line, during the pressurization process of the pressurizing mechanism, the pressure is transmitted to the supporting mechanism through the battery module, thereby avoiding stress on the conveyor line and ensuring the stable operation of the conveyor line.

[0010] In some embodiments, the pressurizing mechanism includes a plurality of pressurizing components, each of which is configured to correspond to at least one row of cells in the battery module. The pressurizing components include:

[0011] a driving structure having a driving portion movable along a first direction; and

[0012] a pressure plate structure, disposed on the driving portion, so as to be pressed against the at least one row of battery cells when the driving portion moves toward the supporting mechanism;

[0013] The control device is electrically connected to the plurality of driving structures.

[0014] Through the above technical means, the pressurizing mechanism is composed of multiple pressurizing components, each pressurizing component corresponds to at least one row of battery cells. Under the driving action of each driving structure, the driving part can drive the pressure plate structure to press the corresponding at least one row of battery cells, thereby ensuring that multiple rows of battery cells are independently driven and pressurized by different driving structures, and the pressurizing force is locally controllable, so that the force at each position on the battery module is uniform, which also ensures that the thermal conductive glue between the battery module and the heat sink is uniformly pressurized at each position, thereby improving the quality rate of the product.

[0015] In some embodiments, within the movable range of the driving part, the pressing plate structure can be pressed tightly against two rows of battery cell modules in the battery module.

[0016] Through the above-mentioned technical means, one pressure plate structure is used to press two rows of battery cell modules. For battery modules of most specifications, the pressurizing operation can be completed using four rows of pressurizing components. The number setting is relatively reasonable, and the arrangement of the drive structure is also relatively compact. The production cost of the equipment is also controlled under the premise of realizing local separate pressurization.

[0017] In some embodiments, the driving structure includes a plurality of cylinders arranged along the length direction of the pressure plate structure, and the piston rods of the cylinders are connected to the pressure plate structure;

[0018] The driving portion includes the piston rod.

[0019] Through the above technical means, the principle and structure of the cylinder are simple, easy to install and maintain, and the requirements for users are not high. At the same time, the purchase cost of the cylinder is low. Arranging multiple cylinders in the length direction of the pressure plate structure can ensure that each part of the pressure plate structure is evenly subjected to the driving force, which is conducive to maintaining the rigidity of the pressure plate structure, so that multiple battery cells in the same row can withstand the same pressure, that is, the battery module is evenly compressed.

[0020] In some embodiments, the pressing plate structure includes an insulating pressing plate, and the insulating pressing plate is used to press the battery cell.

[0021] Through the above technical means, the insulating pressure plate can maintain the insulation state between the two poles of the battery cell when pressing the battery cell, preventing the battery cell from being damaged due to short circuit, and improving the safety of the pressurization process.

[0022] In some embodiments, the pressure plate structure further includes a connecting plate, which is disposed on the driving portion, and the insulating pressure plate is detachably disposed on the connecting plate.

[0023] Through the above technical means, the insulating pressure plate and the connecting plate are set to a detachable form, which is easy to replace and helps to improve maintenance efficiency.

[0024] In some embodiments, a plurality of pressing protrusions are formed on the insulating pressing plate, and the plurality of pressing protrusions are used to respectively press onto a plurality of poles of the at least one row of battery cells.

[0025] Through the above-mentioned technical means, since the poles of the battery cell are located on both sides of the length direction of the battery cell top cover, they can withstand a large pressurizing force. Multiple pressing protrusions are arranged corresponding to the poles of the battery cell. During the pressurization process, the poles can be subjected to pressure to prevent other components on the battery cell shell from being deformed or damaged due to the pressure. At the same time, due to the protruding setting of the pressing protrusions, the poles can be contacted first during the downward pressing process of the pressure plate structure, thereby preventing the explosion-proof valve and the temperature sensing wiring harness on the battery cell top cover from being squeezed by the pressure plate structure and avoiding them from being crushed.

[0026] In some embodiments, the module pressurizing device further includes a foolproof structure, the foolproof structure including:

[0027] Two matching parts, one of which is arranged on the pressure plate structure and the other is fixed relative to the position of the pressurizing station, and the two matching parts can be arranged in an aligned manner during the movable stroke of the pressure plate structure away from the supporting mechanism; and

[0028] The connecting portion can connect the two matching portions when the two matching portions are arranged in an opposite position to limit the movement of the pressure plate structure toward the supporting mechanism.

[0029] Through the above technical means, when the two mating parts are in relative positions, the pressure plate structure is in a position away from the supporting mechanism. At this time, the pressurization process has not started. If the equipment needs to be repaired, the two mating parts can be connected with the connecting part. In this way, the pressure plate structure can be locked in the current position, and the equipment is difficult to enter the working state, preventing the maintenance personnel from accidentally starting the equipment during the maintenance process and causing personal injury to the maintenance personnel, thereby improving the production safety of the equipment.

[0030] In some embodiments, the foolproof structure further comprises:

[0031] A placement portion, which is fixed relative to the pressurizing station, and the connecting portion can be selectively placed on the placement portion; and

[0032] The in-position detection device is provided corresponding to the placement portion and is electrically connected to the control device to generate a warning signal after detecting the connection portion.

[0033] Through the above-mentioned technical means, when the connecting part is placed on the placement part, it means that there is no connection between the two mating parts, and the pressure plate structure can be driven by the driving structure to work. At this time, the equipment can enter the working state. After detecting the existence of the connecting part, the in-situ detection device can generate a warning signal to remind maintenance personnel to pay attention to safety; when the connecting part is not placed on the placement part, the in-situ detection device cannot detect the existence of the connecting part, and the warning signal cannot be generated. At this time, the equipment is in a locked safety state, and maintenance personnel can perform maintenance on it.

[0034] In some embodiments, the module pressurizing device includes a fixing portion, the fixing portion being fixed relative to the pressurizing station;

[0035] The pressure plate structure is provided with a limiting portion opposite to the fixing portion along a first direction. When the pressure plate structure moves to a position that presses the at least one row of battery cells, the limiting portion can abut against the fixing portion.

[0036] Through the above-mentioned technical means, the limiting part is set on the pressure plate structure. When the pressure plate structure moves along the first direction to the position of pressing the battery cell, the limiting part can abut against the fixed part, thereby limiting the pressure plate structure from continuing to press the battery cell with excessive stroke, which can prevent the battery cell from being over-pressed, ensure the safety of the battery cell, and reduce economic losses; not only that, the forced hard limit of the limiting part can also ensure the repeated pressing accuracy of the pressure plate structure, ensuring the stable quality of battery module products in the same batch.

[0037] In some embodiments, the fixing portion is provided with a sleeve having a hole opened along the first direction;

[0038] The pressure plate structure is provided with a guide shaft extending along the first direction. The guide shaft is passed through the shaft sleeve. The end of the guide shaft away from the pressure plate structure is formed with a mounting structure. The limiting portion is provided on the mounting structure.

[0039] Through the above-mentioned technical means, the sleeve can guide the guide shaft, that is, guide the pressure plate structure, ensuring that the pressure plate structure can be accurately pressed onto the battery module; not only that, this solution also makes full use of the installation structure on the guide shaft as the installation basis of the limiting part, which is relatively simple in structure, and when the limiting part abuts against the fixed part, the generated reverse force can directly act on the guide shaft in the axial direction, reducing the radial load of the guide shaft on the sleeve and improving the service life of the guide shaft and the sleeve.

[0040] In some embodiments, the limiting portion includes a limiting bolt, which is connected to the pressure plate structure through a threaded pair. During the screwing stroke of the limiting bolt, the position of the limiting bolt in the first direction is adjustable.

[0041] Through the above-mentioned technical means, taking advantage of the infinitely adjustable characteristics of the limit bolts, the movable stroke of the pressure plate structure can be accurately adjusted to adapt to battery modules of different specifications, thereby improving the applicability of the equipment. It can also apply more precise clamping force to the battery module, thereby improving the quality rate of the battery module.

[0042] In some embodiments, a sensing portion is further provided on the pressure plate structure;

[0043] The module pressurizing device further includes two in-place detection devices spaced apart along a first direction, the two in-place detection devices being electrically connected to the control device;

[0044] During the movable stroke of the pressure plate structure, the sensing part can sequentially reach the positions of the two in-place detection devices. The in-place detection devices are used to identify the sensing part and feed back an in-place signal to the control device.

[0045] Through the above-mentioned technical means, during the movement of the pressure plate structure, the sensing part can move accordingly, and the two in-place detection devices are fixedly arranged as sensing elements and are located at both ends of the stroke of the pressure plate structure to sense the position of the sensing part, thereby reflecting the position of the pressure plate structure, and then being able to feed back the current state of the pressure plate structure to the system, so that the system can make corresponding control over the drive structure, thereby reducing ineffective energy consumption. For example, when the pressure plate structure is in the position of pressing the battery module, the corresponding in-place detection device can feed back a downward pressure signal, and the control device can control the drive structure to stop driving.

[0046] In some embodiments, a tray for conveying the battery modules is provided on the conveyor line, the tray having a bottom end and a top end opposite to each other along a first direction, and a plurality of clearance channels connecting the bottom end and the top end, the top end being used to place the battery modules;

[0047] When the tray is at the pressurizing station, the supporting portion can support the battery module through the corresponding clearance channel within its movable stroke.

[0048] Through the above-mentioned technical means, the battery modules are carried on the conveyor line by using pallets, which avoids the battery modules from directly contacting the conveyor line and being damaged by collision. When the pallet loaded with battery modules is conveyed to the pressurizing station, the top support part can contact the battery module at the top of the pallet through the clearance channel on the pallet, thereby smoothly separating the top support from the pallet and avoiding pressure on the pallet and the conveyor line.

[0049] In some embodiments, a movable blocking structure is further provided on the conveyor line, and the movable blocking structure can block the battery module at the pressurizing station.

[0050] Through the above-mentioned technical means, the movable blocking structure can be movable on the conveyor line to have two positions: extending the conveyor line and retracting the conveyor line. When extending the conveyor line, the movable blocking structure can block the battery module, thereby stopping it at the pressurizing station, facilitating subsequent pressurizing actions and improving production efficiency.

[0051] In some embodiments, the module pressurizing device further includes an anti-deflection detection device for detecting the position of the battery module after the supporting mechanism is actuated to generate a corresponding detection signal;

[0052] The control device is electrically connected to the anti-deflection detection device to control the action of the pressurizing mechanism when the detection signal is a normal signal.

[0053] Through the above-mentioned technical means, the anti-deviation detection device can detect the position of the battery module after the supporting mechanism is activated. Only after ensuring that the position of the battery module is accurate, the detection signal fed back is a normal signal. The control device can control the pressurizing mechanism to follow up to complete the pressurization. When there is an offset in the position of the battery module, the detection signal fed back by the anti-deviation detection device is an abnormal signal. The control device controls the pressurizing mechanism to stop moving, and at the same time warns the operator to make timely adjustments to the battery module, or controls other adjustment mechanisms to adjust the battery module until the position of the battery module is restored to accuracy, thereby avoiding production losses caused by the battery module not being placed in place.

[0054] In a second aspect, the present application provides a pressurizing method for a module pressurizing device, wherein the module pressurizing device has a pressurizing station for maintaining pressure on a battery module having a heat sink bonded to the bottom, and the module pressurizing device includes a supporting mechanism, a pressurizing mechanism, and a conveyor line;

[0055] The pressurization method includes:

[0056] Entering the station step: controlling the conveyor line to work so as to transfer the battery module to the pressurizing station;

[0057] Lifting step: controlling the supporting mechanism to support the heat sink from the bottom;

[0058] Pressure maintaining step: controlling the pressurizing mechanism to pressurize the battery module from the top and maintaining the pressure for a target time.

[0059] In the technical solution of the embodiment of the present application, the automated conveying of the conveyor line can improve the transfer efficiency of the battery module and improve the production efficiency of the battery pack production line. The battery module can then be supported from the conveyor line through the supporting mechanism, thereby avoiding the conveyor line from being subjected to a pressurized force. With the cooperation of the pressurizing mechanism, the thermal conductive adhesive between the battery module and the heat sink can be fully squeezed and evenly spread, so that thermal conductive adhesive is present at various local positions on the heating surface of the battery module, thereby improving the heat dissipation efficiency of the battery module.

[0060] In some embodiments, the pressurizing mechanism includes a plurality of pressurizing components, each of which includes a driving structure and a pressure plate structure;

[0061] The pressure maintaining step includes:

[0062] The plurality of driving structures are controlled to move respectively, so as to drive the plurality of pressure plate structures to pressurize the plurality of rows of battery cells of the battery module and maintain the pressure for a target time.

[0063] Through the above-mentioned technical means, multiple driving structures can be driven and controlled separately, thereby realizing controllable local pressure, making the force at various positions on the battery module uniform, that is, ensuring that the thermal conductive adhesive between the battery module and the heat sink is uniformly pressurized at various positions. At the same time, maintaining the pressure for the target time can prevent the thermal conductive adhesive from shrinking, so that it can remain in close contact with the heat sink and the battery module, thereby improving the heat dissipation efficiency of the battery module.

[0064] In some embodiments, the module pressurizing device further includes an anti-deflection detection device for detecting the position of the battery module after the supporting mechanism is actuated, and feeding back a corresponding detection signal to the control device;

[0065] The pressure maintaining step comprises:

[0066] After the heat sink is supported and the detection signal fed back by the anti-deflection detection device is a normal signal, the pressurizing mechanism is controlled to pressurize the battery module from the top and maintain the pressure for a target time.

[0067] Through the above-mentioned technical means, an anti-deviation detection device is set up to sense the position status of the battery module, so that when it is in the correct position, the detection signal fed back by the anti-deviation detection device is a normal model, and the control device can control the pressurizing mechanism to accurately pressurize the battery module, thereby ensuring the pressurization quality. When the battery module is in an inaccurate position, the detection signal fed back by the anti-deviation detection device is an abnormal model, and the control device can control the pressurizing mechanism to stop pressing down, so that the operator or other adjustment device can adjust the position of the battery module to ensure the pressurization quality.

[0068] In some embodiments, the conveyor line is used to convey the battery module via a pallet, and the module pressurizing device further includes a pallet positioning device;

[0069] After the station entry step, the pressurization method further includes:

[0070] Positioning step: controlling the tray positioning device to operate so as to position the tray.

[0071] Through the above technical means, the incoming pallet is positioned at the pressurizing station through the pallet positioning device, so that the battery module can be accurately positioned at the pressurizing station to be accurately aligned with the pressurizing mechanism, ensuring the pressurization accuracy and improving the product quality rate.

[0072] In some embodiments, after the pressure maintaining step, the pressurizing method further comprises:

[0073] Pressure relief step: controlling the pressurizing mechanism to rise to separate from the battery module;

[0074] Falling back step: controlling the supporting mechanism to fall back to separate from the heat sink.

[0075] Through the above-mentioned technical means, after the pressure holding step, the pressurization and pressure holding operations of the battery module and the heat sink have been completed. At this time, by setting the pressure relief step, the pressurizing mechanism can be restored to its initial position, thereby detaching from the battery module. At the same time, by setting the fallback step, the supporting mechanism can be restored to its initial position, thereby detaching from the heat sink. At this time, the battery module can return to the conveyor line and can be conveyed to the next station through the conveyor line. After this, the module pressurizing equipment can be restored to an idle state, and the conveyor line can convey the next battery module to the pressurizing station in time, thereby realizing uninterrupted pressurization operation of the module pressurizing equipment on the battery module, thereby ensuring production efficiency.

[0076] In some embodiments, a movable blocking structure is further provided on the conveying line of the module pressurizing device;

[0077] The station entry step includes:

[0078] Controlling the movable blocking structure to rise and controlling the conveying line to operate so as to transfer the battery module to the pressurizing station until it is blocked by the movable blocking structure;

[0079] Correspondingly, after the fallback step, the pressurization method further includes an exit step, and the exit step includes:

[0080] The movable blocking structure is controlled to fall back and the conveying line is controlled to operate so as to transfer the battery module to the next workstation.

[0081] Through the above-mentioned technical means, a movable blocking structure is set on the conveyor line, which can extend the conveyor line and retract the conveyor line in its movable stroke, so that the battery module can be blocked at the pressurizing station, and the initial positioning of the battery module can be achieved, which makes it easier for the pressurizing device to follow up on the pressurization and pressure-maintaining operations of the battery module, and can also release the pressurized battery module in time, thereby improving the pressurization efficiency of the module pressurizing equipment.

[0082] In some embodiments, the pressurizing mechanism includes a driving structure and a pressing plate structure, and the module pressurizing device further includes two in-place detection devices, the two in-place detection devices are respectively used to feedback in-place signals indicating that the pressing plate structure is in a corresponding position;

[0083] The pressure maintaining step comprises:

[0084] Controlling the movement of the driving structure to drive the pressing plate structure to move toward the supporting mechanism;

[0085] After receiving the arrival signal fed back by the corresponding one of the arrival detection devices, controlling the driving structure to stop the action and maintain the target duration;

[0086] Correspondingly, the fallback step includes:

[0087] After receiving the in-position signal fed back by the corresponding other in-position detection device, the supporting mechanism is controlled to fall back.

[0088] Through the above-mentioned technical means, during the movement of the pressure plate structure, the position state of the pressure plate structure can be detected by two in-place detection devices, and then the current state of the pressure plate structure can be fed back to the control device. If the pressure plate structure reaches the position of pressing the battery module during the movement toward the supporting mechanism, the corresponding in-place detection device can detect the position state in time, and the control device can control the driving structure to stop working in time, thereby preventing excessive pressing on the battery module at the source and reducing the ineffective energy consumption of the driving structure. If the corresponding in-place detection device is triggered during the process of the pressure plate structure rising away from the supporting mechanism, it means that the pressurizing mechanism returns to the initial position, and then the supporting mechanism can be controlled to fall back, thereby realizing the initialization of the module pressurizing equipment, which is convenient for pressurizing the next battery module.

[0089] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0090] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0091] FIG1 is a schematic structural diagram of an embodiment of a module pressurizing device provided by the present application;

[0092] FIG2 is a schematic structural diagram of the pressurizing mechanism in FIG1 ;

[0093] FIG3 is a schematic diagram of the partial structure of the foolproof structure and the pressurizing mechanism in FIG2 from another perspective;

[0094] FIG4 is a schematic structural diagram of the supporting mechanism in FIG1 from another perspective;

[0095] FIG5 is a schematic flow chart of a first embodiment of a pressurization method provided by the present application;

[0096] FIG6 is a schematic flow chart of a second embodiment of the pressurization method provided by the present application;

[0097] FIG7 is a schematic flow chart of a third embodiment of the pressurization method provided in this application;

[0098] FIG8 is a schematic flow chart of a fourth embodiment of the pressurization method provided in this application;

[0099] FIG9 is a schematic flow chart of a fifth embodiment of the pressurization method provided in this application;

[0100] FIG10 is a schematic flow chart of a sixth embodiment of the pressurization method provided in this application.

[0101] Description of Figure Numbers:

[0102] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

[0103] Implementation Methods of the Application

[0104] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0105] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0106] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0107] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0108] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0109] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0110] In the description of the embodiments of the present application, the technical 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 the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0111] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0112] Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, their market demand is also constantly increasing, and with it, the demand for their product performance is constantly increasing. One of the more important performance is heat dissipation, which directly affects the service life of the power battery.

[0113] Power batteries generally include battery modules and water-cooling plates. The water-cooling plates are used to cool the battery modules in use. During the production process of power batteries, a water-cooling plate installation process is generally required. During this process, thermal conductive adhesive needs to be applied between the water-cooling plate and the battery module to improve the thermal conductivity of the water-cooling plate. However, in the existing technology, the thermal conductive adhesive is prone to uneven coating, resulting in the lack of thermal conductive adhesive in local locations on the battery module. This directly leads to the inability to transfer heat to the water-cooling plate in a timely manner during the operation of the power battery, which in turn leads to poor heat dissipation performance of the produced power battery.

[0114] Based on the above considerations, in order to improve the poor heat dissipation performance of power batteries caused by uneven coating of thermal conductive adhesive during the production process of power batteries, the present application proposes a module pressurizing equipment. By setting a conveyor line, the conveyor line can convey the battery module to the pressurizing station of the module pressurizing equipment. A supporting mechanism and a pressurizing mechanism are provided at the pressurizing station. The supporting mechanism has a plurality of supporting parts that are movable along a first direction, and a plurality of supporting parts are arranged along a second direction to lift and support the heat dissipation plate. The heat dissipation plate can be supported by a plurality of supporting parts, thereby separating the battery module from the conveyor line, and then pressurizing the battery module through the pressurizing mechanism. Under the action of pressure, the thermal conductive adhesive coated between the heat dissipation plate and the battery module can be evenly pressed open, thereby improving the poor heat dissipation performance of the battery module.

[0115] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0116] Please refer to Figure 1, and in combination with Figures 2 to 4, wherein Figure 1 is a structural schematic diagram of an embodiment of the module pressurizing device 100 provided in the present application; Figure 2 is a structural schematic diagram of the pressurizing mechanism 3 in Figure 1; Figure 3 is a partial structural schematic diagram of the anti-foolproof structure and the pressurizing mechanism in Figure 2 from another perspective; and Figure 4 is a structural schematic diagram of the supporting mechanism in Figure 1 from another perspective. In some embodiments of the present application, the module pressurizing equipment 100 has a pressurizing station for maintaining pressure on a battery module with a heat sink adhered to the bottom. The module pressurizing equipment 100 includes a conveyor line 1, a pressurizing device and a control device. The conveyor line 1 passes through the pressurizing station, and the conveyor line 1 is used to convey the battery module; the pressurizing device is arranged corresponding to the pressurizing station, and the pressurizing device includes a supporting mechanism 2 and a pressurizing mechanism 3 relative to each other along a first direction. The supporting mechanism 2 has a plurality of supporting parts 21 that are movable along the first direction, and the plurality of supporting parts 21 are arranged along the second direction to lift and support the heat sink so that the battery module is separated from the conveyor line 1, and the pressurizing mechanism 3 is used to press the battery module; the control device is electrically connected to the supporting mechanism 2 and the pressurizing mechanism 3 to control the action of the supporting mechanism 2 and the pressurizing mechanism 3.

[0117] It should be noted that the battery module and the heat sink mentioned in the embodiment of the present application are bonded together by thermally conductive adhesive. The heat sink includes but is not limited to a water-cooled plate, and may also be an oil-cooled plate or even an air-cooled plate. Its main function is to absorb heat from the battery module through the thermally conductive adhesive and dissipate it to the external environment.

[0118] It should be noted that the function of the conveyor line 1 is to transport the battery modules on the production line, so as to transport the battery modules processed in the upstream station to the pressurizing station, and at the same time transport the battery modules pressurized at the pressurizing station to the downstream station. There are many types of structures. For example, the conveyor line 1 can be a belt conveyor line 1, a roller conveyor line 1 or a double-speed chain conveyor line 1. The present embodiment does not limit its specific structure, but it is worth mentioning that since the supporting mechanism 2 needs to support the battery module at the pressurizing station to separate from the conveyor line 1, the conveyor line 1 needs to be at the pressurizing station. There is a space for the support mechanism 2 to pass through, and there are many specific implementation methods. For example, when the conveyor line 1 is a double-speed chain conveyor line 1, due to the structural convenience of the double-speed chain conveyor line 1, there is enough space between the double-speed chains on both sides. When the conveyor line 1 is a roller conveyor line 1, a sufficient gap can be set between the two adjacent rollers at the pressurizing station to form a space. At the same time, the conveyor line 1 can directly convey the battery module, or it can indirectly convey the battery module by loading the tray 200. This embodiment does not limit this.

[0119] It should be noted that the arrangement positions of the supporting mechanism 2 and the pressurizing mechanism 3 can be in various situations. The two can be arranged on the same basis or on different basis, as long as they can correspond to the pressurizing station; since the supporting mechanism 2 and the pressurizing mechanism 3 are opposite to each other along the first direction and can act on the heat dissipation plate and the battery module from the top and bottom sides respectively, it can be understood that the first direction is the thickness direction of the battery module; after the supporting mechanism 2 supports the battery module to leave the conveyor line 1, it itself needs to bear the entire gravity of the battery module and the pressure applied to the battery module by the pressurizing mechanism 3. Therefore, the supporting mechanism 2 should be set to a structure with strong bearing capacity and can be lifted and moved along the first direction. There are many types of such structures, and this embodiment does not limit this; the function of the pressurizing mechanism 3 is to apply a pressurizing force to the battery module, and its structural type also has many types. For example, the pressurization can be driven by a cylinder or by a servo motor. This embodiment does not limit its specific structure;

[0120] It should be noted that multiple top support parts 21 can be connected together and moved in a synchronous driving manner to ensure synchronous support of the heat sink, but are not limited to this. They can also be set independently of each other and moved in a distributed driving manner. As long as it can ensure that the heat sink is stably supported before the pressurizing mechanism 3 is pressed, this embodiment does not limit this; the top support part 21 can be directly driven by a driving source such as a pressure cylinder and a servo motor, or indirectly driven by a guide structure, and this embodiment does not limit this; the second direction refers to a direction intersecting with the first direction. When the battery module with a heat sink bonded to the bottom is placed in place, the second direction can be consistent with the width direction or length direction of the heat sink, that is, multiple top support parts 21 can be arranged along the length direction of the heat sink, or along the width direction of the heat sink.

[0121] It should be noted that the electrical connection in the embodiment should not be narrowly understood as being connected only through a circuit structure, and wireless connection can also be selected. The control device can control the actions of the supporting mechanism 2 and the pressurizing mechanism 3 respectively through electrical signals or wireless signals. At the same time, it can be understood that there is no necessary order relationship between the control device and the control of the two. It needs to be determined according to the activity stroke of the supporting mechanism 2 and the activity stroke of the pressurizing mechanism 3, as well as the activity speed of the supporting mechanism 2 and the activity speed of the pressurizing mechanism 3. What needs to be ensured in the end is that before the pressurizing mechanism 3 acts on the battery module, the supporting mechanism 2 needs to act on the heat sink first, so that it can play a bearing role and prevent the conveyor line 1 from being subjected to the pressurizing force.

[0122] In the technical solution of the embodiment of the present application, the battery module to which the heat sink has been bonded in the upstream process can be automatically transported to the pressurizing station through the conveyor line 1, and the transfer efficiency is high. At the pressurizing station, the control device can first control the supporting mechanism 2 to support the heat sink from the bottom through multiple supporting parts 21, so that the battery module is separated from the conveyor line 1. In this process, since the multiple supporting parts 21 are arranged along the second direction, a supporting force can be applied to the heat sink from various positions, thereby effectively preventing the heat sink from being partially unsupported during the pressurization process. The deformation is produced, which improves the quality rate of the battery module, and then the pressurizing mechanism 3 is controlled to pressurize the battery module from the top, so that the thermal conductive glue coated between the heat sink and the battery module is evenly pressed open under the action of pressure, the uneven coating of the thermal conductive glue is improved, and the heat dissipation capacity of the battery module is improved. Not only that, since the supporting mechanism 2 supports the battery module away from the conveyor line 1, during the pressurization process of the pressurizing mechanism 3, the pressure is transmitted to the supporting mechanism 2 through the battery module, thereby avoiding the force on the conveyor line 1 and ensuring the stable operation of the conveyor line 1.

[0123] Please continue to refer to Figures 1 and 2. In some embodiments, the pressurizing mechanism 3 includes multiple pressurizing components 3a, which are used to correspond to at least one row of battery cells in the battery module. The pressurizing component 3a includes a driving structure 31 and a pressure plate structure 32. The driving structure 31 has a driving part 311 that is movable along a first direction; the pressure plate structure 32 is arranged on the driving part 311 so that it can be pressed onto at least one row of battery cells when the driving part 311 moves toward the supporting mechanism 2; the control device is electrically connected to the multiple driving structures 31.

[0124] It should be noted that the battery module is composed of multiple rows of battery cells, and the pressure plate structure 32 in each pressure component 3a corresponds to at least one row of battery cells. It can be understood that it can correspond to only one row of battery cells, or it can correspond to two rows of battery cells, or even correspond to three rows of battery cells. The rows of battery cells in this embodiment can refer to battery cells arranged along the horizontal direction of the battery module, or it can refer to battery cells arranged along the longitudinal direction of the battery module. To correspond to the multiple rows of battery cells in the battery module, at least multiple pressure plate structures 32 in multiple pressure components 3a are required to correspond thereto; there are multiple specific driving forms of the driving structure 31, and this embodiment does not limit it, as long as it has a controllable driving part 311 and can move along the first direction; the shape of the pressure plate structure 32 can have various forms, but the size of the pressure plate structure 32 in the length direction of the entire row of battery cells needs to be set larger to cover the entire row of battery cells.

[0125] Through the above embodiment, the pressurizing mechanism 3 is composed of multiple pressurizing components 3a, each pressurizing component 3a corresponds to at least one row of battery cells, and under the driving action of each driving structure 31, the driving part 311 can drive the pressure plate structure 32 to press the corresponding at least one row of battery cells, thereby ensuring that multiple rows of battery cells are independently driven and pressurized by different driving structures 31, and the pressurizing force is locally controllable, so that the force at each position on the battery module is uniform, that is, it ensures that the pressure at each position of the thermal conductive glue between the battery module and the heat sink is uniform, thereby improving the quality rate of the product.

[0126] In some embodiments, within the movable range of the driving portion 311 , the pressing plate structure 32 can be pressed tightly against two rows of battery cell modules in the battery module.

[0127] It should be noted that a battery module is usually composed of multiple groups of battery cell modules arranged in rows, and a group of battery cell modules is generally composed of multiple single battery cells arranged in rows. For a considerable number of battery modules, it is generally composed of eight rows of battery cell modules.

[0128] Through the above embodiment, one pressure plate structure 32 is used to press two rows of battery cell modules. For most specifications of battery modules, four rows of pressure components 3a can complete the pressurization operation. The number setting is relatively reasonable, and the arrangement of the driving structure 31 is also relatively compact. The production cost of the equipment is also controlled under the premise of realizing local separate pressurization.

[0129] 2 , in some embodiments, the driving structure 31 includes a plurality of cylinders 31 a arranged along the length of the pressure plate structure 32 , wherein the piston rods 311 a of the cylinders 31 a are connected to the pressure plate structure 32 ; the driving portion 311 includes the piston rod 311 a .

[0130] It should be noted that the length direction of the pressure plate structure 32 corresponds to the arrangement direction of the entire row of battery cells; the number of cylinders 31a can be two, three, or even more, depending on the specifications of the battery module and the pressing force requirements.

[0131] Through the above embodiment, the principle and structure of the cylinder 31a are simple, easy to install and maintain, and have low requirements for users. At the same time, the purchase cost of the cylinder 31a is low. Arranging multiple cylinders 31a in the length direction of the pressure plate structure 32 can ensure that each part of the pressure plate structure 32 is evenly subjected to the driving force, which is conducive to maintaining the rigidity of the pressure plate structure 32, so that multiple battery cells in the same row can withstand the same pressure, that is, the battery module is evenly compressed.

[0132] Continuing to refer to FIG. 2 , in some embodiments, the pressing plate structure 32 includes an insulating pressing plate 322 , and the insulating pressing plate 322 is used to press the battery cell.

[0133] It should be noted that the insulating pressure plate 322 refers to a pressure plate with insulating properties, which can be made of inorganic insulating materials, organic materials or mixed insulating materials. Inorganic insulating materials include mica sheets, ceramics, marble, glass, sulfur, etc., organic insulating materials include rubber, resin, shellac, cotton paper, hemp, silk, rayon tubes, etc., and mixed insulating materials such as insulating materials formed by mixing two insulating materials. This embodiment does not limit its specific material, but it itself should have sufficient strength to apply pressure to the battery module, or it itself can obtain sufficient support to offset the pressurizing force between it and the battery module.

[0134] Through the above embodiment, the insulating pressure plate 322 can maintain the insulation state between the two poles of the battery cell when pressing the battery cell due to its insulation property, prevent the battery cell from being damaged due to short circuit, and improve the safety of the pressurization process.

[0135] Continuing to refer to FIG. 2 , in some embodiments, the pressure plate structure 32 further includes a connecting plate 321 . The connecting plate 321 is disposed on the driving portion 311 , and the insulating pressure plate 322 is detachably disposed on the connecting plate 321 .

[0136] It should be noted that the connecting plate 321 is arranged on the driving part 311, and the insulating pressure plate 322 is detachably arranged on the connecting plate 321. It can be understood that the connecting plate 321 serves as the installation base of the insulating pressure plate 322, and it needs to have greater strength. Since there is a partition between the connecting plate 321 and the battery module with the insulating pressure plate 322, the material of the connecting plate 321 can be a metal material or alloy material with greater strength; there are many ways to detach the insulating pressure plate 322 and the connecting plate 321, for example, it can be detachable through a snap connection or a bolt connection, which is not limited in this embodiment.

[0137] Through the above embodiment, the insulating pressing plate 322 and the connecting plate 321 are set to be detachable, which is convenient for replacement and helps to improve maintenance efficiency.

[0138] Continuing to refer to FIG. 2 , in some embodiments, a plurality of pressing protrusions 3221 are formed on the insulating pressing plate 322 , and the plurality of pressing protrusions 3221 are used to respectively press onto a plurality of poles of at least one row of battery cells.

[0139] It should be noted that the composition of the battery cell generally includes a battery cell shell, a battery cell top cover and a bare battery cell. The bare battery cell is arranged inside the battery cell shell, and the battery cell top cover is arranged on the battery cell shell to encapsulate the bare battery cell. The battery cell top cover is correspondingly provided with an explosion-proof valve, two battery cell poles, a temperature sensing harness and other components. The two battery cell poles are respectively connected to the cathode and anode of the bare battery cell, and the two battery cell poles are respectively arranged at both ends of the length direction of the battery cell top cover; it can be understood that the clamping protrusion 3221 should protrude from the main body of the insulating pressure plate 322, so that it can first contact the battery cell pole during the downward pressing process of the insulating pressure plate 322.

[0140] Through the above embodiment, since the poles of the battery cell are located on both sides of the length direction of the battery cell top cover, they can withstand a large pressurizing force. Multiple pressing protrusions 3221 are arranged corresponding to the poles of the battery cell. During the pressurization process, the poles can be subjected to pressure to prevent other components on the battery cell shell from being deformed or damaged due to the pressure. At the same time, due to the protruding setting of the pressing protrusions 3221, the poles can be contacted first during the downward pressing process of the pressure plate structure 32, thereby preventing the explosion-proof valve and the temperature sensing wiring harness on the battery cell top cover from being squeezed by the pressure plate structure 32 and avoiding them from being crushed.

[0141] Please continue to refer to Figures 2 and 3. In some embodiments, the module pressurizing device 100 also includes an anti-foolproof structure 4, which includes two mating parts 41 and a connecting part 42. One of the two mating parts 41 is set on the pressure plate structure 32, and the position of the other is fixed relative to the pressure station. In the movable stroke of the pressure plate structure 32 away from the supporting mechanism 2, the two mating parts 41 can be arranged in a aligned position; when the two mating parts 41 are arranged in a aligned position, the connecting part 42 can connect the two mating parts 41 to limit the movement of the pressure plate structure 32 toward the supporting mechanism 2.

[0142] It should be noted that, in the embodiment of the present application, a fixed position of a component relative to the pressurizing station means that, in the same space, a point in the pressurizing station is used as the coordinate origin, and the coordinates of the component relative to this coordinate origin are determined and will not change with changes in the external environment. In this embodiment, the position of the other matching portion 41 is fixed; in the movable stroke of the pressure plate structure 32 away from the supporting mechanism 2, the two matching portions 41 can be arranged in a counter-positioned manner, which means that in the first direction, during the process of the pressure plate structure 32 moving away from the supporting mechanism 2, the matching portion 41 on the pressure plate structure 32 can move to a relative position with the other fixed matching portion 41. The relative direction can be the first direction, or it can be opposite to the first direction. In a different second direction, when the two mating parts 41 are opposite to each other along the first direction, the connecting part 42 can choose to lock the two mating parts 41 by means of a hook lock, and at this time the connecting part 42 is subjected to tensile stress along its axial direction; when the two mating parts 41 are opposite to each other along the second direction, the connecting part 42 can choose to lock the two mating parts 41 by means of plugging, and at this time the connecting part 42 is subjected to shear force along its radial direction. The specific structure of the connecting part 42 can be selected according to the selected locking method. In some specific embodiments, the two mating parts 41 include two sockets extending along the second direction, and the connecting part 42 includes a pin, which can be inserted into the two sockets correspondingly along the second direction, thereby limiting the downward pressure of the pressure plate structure 32.

[0143] Through the above embodiment, when the two mating parts 41 are in relative positions, the pressure plate structure 32 is in a position away from the supporting mechanism 2. At this time, the pressurization process has not started. If the equipment needs to be repaired, the two mating parts 41 can be connected by the connecting part 42. In this way, the pressure plate structure 32 can be locked in the current position, and the equipment is difficult to enter the working state, preventing the maintenance personnel from accidentally starting the equipment during the maintenance process and causing personal injury to the maintenance personnel, thereby improving the production safety of the equipment.

[0144] Please continue to refer to Figures 2 and 3. In some embodiments, the anti-fool structure 4 also includes a placement portion 44 and an in-position detection device 43. The placement portion 44 is fixed relative to the pressurizing station, and the connecting portion 42 can also be selectively placed on the placement portion 44; the in-position detection device is arranged corresponding to the placement portion 44, and the in-position detection device 43 is electrically connected to the control device to generate a warning signal after detecting the connecting portion 42.

[0145] It should be noted that in FIG3 , the connecting portion 42 is in a position connecting the two matching portions 41, and the placement portion 44 is in an empty state at this time; the function of the placement portion 44 is that when the connecting portion 42 is not needed to connect the two matching portions 41, the placement portion 44 can place the connecting portion 42 so that it appears in the corresponding position; the in-position detection device 43 is provided corresponding to the placement portion 44, and its function is to detect the in-position status of the connecting portion 42 at the placement portion 44. When the connecting portion 42 is detected, a warning signal can be fed back to the control device. When the connecting portion 42 is not detected, no warning signal will be fed back. After receiving the warning signal, the control device can control the warning device to emit an alarm. The arrangement of the placing portion 44 is carried out according to the embodiment of the present invention, that is, the action of issuing a warning corresponds one-to-one to the state of the connecting portion 42 on the placement portion 44, which can reflect the locking status of the equipment. Generally, the connecting portion 42 has only two position states, namely the connection state on the two mating portions 41 and the placement state on the placement portion 44. The connection state reflects that the pressure plate structure 32 is locked, and the placement state reflects that the pressure plate structure 32 is not locked. The structure of the placement portion 44 depends on the connecting portion 42. As long as the connecting portion 42 can be stably placed thereon, for example, when the connecting portion 42 is set as a pin, the placement portion 44 can be set as a mounting hole, and the pin can be stably inserted and placed in the mounting hole.

[0146] Through the above embodiment, when the connecting part 42 is placed on the placement part 44, it means that there is no connection between the two matching parts 41, and the pressure plate structure 32 can be driven by the driving structure 31 to work. At this time, the equipment can enter the working state. After detecting the existence of the connecting part 42, the in-situ detection device 43 can generate a warning signal to remind maintenance personnel to pay attention to safety; when the connecting part 42 is not placed on the placement part 44 (that is, the connecting part 42 is in the position connecting the two matching parts 41), the in-situ detection device 43 cannot detect the existence of the connecting part 42, and the warning signal cannot be generated. At this time, the equipment is in a locked safety state, and maintenance personnel can perform maintenance on it.

[0147] Please continue to refer to Figures 2 and 3. In some embodiments, the module pressurizing device 100 includes a fixing portion 5, which is fixed relative to the pressurizing station. A limiting portion 324 is provided on the pressure plate structure 32, which is opposite to the fixing portion 5 along the first direction. When the pressure plate structure 32 moves to a position that presses at least one row of battery cells, the limiting portion 324 can abut against the fixing portion 5.

[0148] It should be noted that the position of the fixing portion 5 relative to the pressurizing station is fixed and will not be described in detail here; the function of the limiting portion 324 is to limit the stroke of the pressure plate structure 32 after abutting against the fixing portion 5, and its position on the pressure plate structure 32 can be selected from a variety of options, for example, it can be on the side of the pressure plate structure 32 away from the supporting mechanism 2, or on the side of the pressure plate structure 32 close to the supporting mechanism 2, or on the side of the pressure plate structure 32, as long as it is not between the pressure plate structure 32 and the supporting mechanism 2 and is facing the pressure plate structure 32. At the same time, in order to ensure the accuracy of the limit, the limiting portion 324 and the fixing portion 5 need to be made of rigid material to prevent deformation after contact and loss of the limiting effect.

[0149] Through the above embodiment, the limiting portion 324 is set on the pressure plate structure 32. When the pressure plate structure 32 moves along the first direction to the position for pressing the battery cell, the limiting portion 324 can abut against the fixing portion 5, thereby limiting the pressure plate structure 32 from continuing to press the battery cell with an excessive stroke, which can prevent the battery cell from being over-pressed, ensure the safety of the battery cell, and reduce economic losses; not only that, the forced hard limit of the limiting portion 324 can also ensure the repeated pressing accuracy of the pressure plate structure 32, and ensure the stable quality of the battery module products in the same batch.

[0150] Please continue to refer to Figures 2 and 3. In some embodiments, a sleeve 51 with an opening along the first direction is provided on the fixing portion 5; a guide shaft 325 extending along the first direction is provided on the pressure plate structure 32, and the guide shaft 325 is passed through the sleeve 51. The end of the guide shaft 325 away from the pressure plate structure 32 is formed with a mounting structure 3251, and the limiting portion 324 is provided on the mounting structure 3251.

[0151] It should be noted that the guide shaft 325 is passed through the sleeve 51, and the sleeve 51 has a guiding function for the guide shaft 325, that is, the guide shaft 325 can only move along the first direction on the sleeve 51. The guide shaft 325 generally has two ends, one end is connected to the pressure plate structure 32, and the other end is used as the end for the limit part 324 to be set. The limit part 324 can be directly set on the guide shaft 325, or it can be indirectly connected to the guide shaft 325 through other structures. The limit part 324 in this embodiment is indirectly installed on the guide shaft 325 through the mounting structure 3251, but it is worth mentioning that the limit part 324 needs to be rigidly connected to the guide shaft 325 to ensure rigid locking of the stroke of the pressure plate structure 32.

[0152] Through the above embodiment, the sleeve 51 can guide the guide shaft 325, that is, it can guide the pressure plate structure 32, ensuring that the pressure plate structure 32 can be accurately pressed onto the battery module; not only that, the present solution also makes full use of the mounting structure 3251 on the guide shaft 325 as the mounting basis of the limiting portion 324, which is relatively simple in structure, and when the limiting portion 324 abuts against the fixing portion 5, the generated reverse force can directly act on the guide shaft 325 in the axial direction, reducing the radial load of the guide shaft 325 on the sleeve 51, thereby improving the service life of the guide shaft 325 and the sleeve 51.

[0153] In some embodiments, the limiting portion 324 includes a limiting bolt, which is connected to the pressure plate structure 32 via a threaded pair. During the screwing stroke of the limiting bolt, the position of the limiting bolt in the first direction is adjustable.

[0154] It should be noted that the thread pair refers to the internal thread and external thread that mesh with each other. In this embodiment, the external thread is formed on the limiting bolt, and the internal bolt is formed in the threaded hole of the pressure plate structure 32. Obviously, in order to make the position of the limiting bolt adjustable in the first direction during the screwing stroke of the limiting bolt, the extension direction of the threaded hole on the pressure plate structure 32 is the first direction.

[0155] Through the above-mentioned technical means, taking advantage of the infinitely adjustable characteristics of the limit bolts, the movable stroke of the pressure plate structure can be accurately adjusted to adapt to battery modules of different specifications, thereby improving the applicability of the equipment. It can also apply more precise clamping force to the battery module, thereby improving the quality rate of the battery module.

[0156] In some embodiments, the limiting portion 324 includes a limiting bolt 324 a.

[0157] It should be noted that the position adjustment method of the limiting bolt 324a is that the limiting bolt 324a extends along the first direction and is directly or indirectly threadedly connected to the pressure plate structure 32. By screwing the limiting bolt 324a forward or reverse, its position in the first direction can be adjusted.

[0158] Through the above embodiment, the infinitely adjustable characteristic of the limiting bolt 324a can be utilized to accurately adjust the movable stroke of the pressure plate structure 32, thereby applying a more precise pressing force to the battery module and improving the quality rate of the battery module.

[0159] Please continue to refer to Figure 2. In some embodiments, a sensing part 323 is further provided on the pressure plate structure 32; the module pressurizing device 100 also includes two in-place detection devices 6 arranged at intervals along the first direction, and the two in-place detection devices 6 are electrically connected to the control device; in the movable stroke of the pressure plate structure 32, the sensing part 323 can reach the positions of the two in-place detection devices 6 in turn, and the in-place detection device 6 is used to identify the sensing part 323 and feedback the in-place signal to the control device.

[0160] It should be noted that the sensing part 323 can be a part of the pressure plate structure 32, or it can be directly or indirectly installed on the pressure plate structure 32 as a split structure. Its function is to correspond to the position of the in-place detection device 6. In the movable stroke of the pressure plate structure 32, the sensing part 323 can reach the position of the in-place detection device 6 respectively, so that the in-place detection device 6 can identify the sensing part 323 and feedback the in-place signal. The positions of the two in-place detection devices 6 correspond to the two ends of the stroke of the pressure plate structure 32, that is, the two detection devices are used to feedback the signals of the pressure plate structure 32 in the retracted position and the pressurized position respectively. Specifically, it can be a photoelectric sensor, which generates a signal by blocking the photoelectric sensor with the sensing part 323, or it can be a pressure sensor, which generates an in-place signal by contacting the sensing part 323.

[0161] Through the above embodiment, during the movement of the pressure plate structure 32, the sensing part 323 can move accordingly, and the two in-place detection devices 6 are fixedly arranged as sensing elements and are located at both ends of the stroke of the pressure plate structure 32 to sense the position of the sensing part 323, thereby reflecting the position of the pressure plate structure 32, and then being able to feed back the current state of the pressure plate structure 32 to the system, so that the system can make corresponding control over the drive structure 31, thereby reducing ineffective energy consumption. For example, when the pressure plate structure 32 is in the position of pressing the battery module, the corresponding in-place detection device 6 can feed back a downward pressure signal, and the control device can control the drive structure 31 to stop driving.

[0162] Please continue to refer to Figures 1 and 4. In some embodiments, a tray 200 for conveying battery modules is provided on the conveyor line 1. The tray 200 has a bottom end and a top end opposite to each other along a first direction, and a plurality of clearance channels 210 connecting the bottom end and the top end. The top end is used to place the battery module. When the tray is in the pressurizing station, the supporting portion can support the battery module through the corresponding clearance channel 210 within its movable stroke.

[0163] It should be noted that the positions of the multiple give-way channels 210 on the pallet 200 should be set so that when the pallet 200 is in the pressurizing station, each give-way channel 210 corresponds to a corresponding top support portion 21; the pallet 200 can specifically be a frame structure or a plate structure, which is not limited in the embodiments of the present application.

[0164] Through the above-mentioned technical means, the battery module is carried by the tray 200 and circulated on the conveyor line 1, which avoids the battery module from directly contacting the conveyor line 1 and being damaged by collision. When the tray 200 loaded with the battery module is conveyed to the pressurizing station, the supporting part 21 can contact the battery module at the top of the tray 200 through the yield channel 210 on the tray 200, thereby smoothly separating its supporting part from the tray 200 and avoiding the tray 200 and the conveyor line 1 from being compressed.

[0165] Furthermore, in some embodiments, the module pressurizing device 100 further includes a pallet positioning device 8 provided corresponding to the pressurizing station, and the pallet positioning device 8 is used to position the pallet 200 .

[0166] It should be noted that the function of the tray positioning device 8 is to correspond to the position of the pressurizing mechanism 3, so as to position the incoming material tray 200 at the pressurizing station, and the tray 200 itself has the function of positioning the battery module, that is, the tray positioning device 8 can position the battery module correctly placed on the tray 200 at the position corresponding to the pressurizing mechanism 3; there are many structures of the tray positioning device 8, which can be positioned by a positioning block or by a positioning pin, and the drive of the positioning block or the positioning pin is generally achieved by a cylinder, of course, it can also be achieved by a servo motor, and the positioning direction is generally along the first direction, which is not described in detail in this embodiment.

[0167] Through the above embodiment, when the tray 200 loaded with the battery module is transported to the pressurizing station, the tray positioning device 8 can position the tray 200, thereby ensuring that the tray 200 remains in the position corresponding to the pressurizing mechanism 3, that is, ensuring that the battery module is in the position corresponding to the pressurizing mechanism 3, so that the pressurizing mechanism 3 can accurately pressurize the battery module.

[0168] In some embodiments, a movable blocking structure 7 is further provided on the conveyor line 1, and the movable blocking structure 7 can block the battery module at the pressurizing station.

[0169] It should be noted that the movable blocking structure 7 is a common structure on the conveyor line 1. It can be movably set and generally has two positions, namely, an extended position extending from the conveyor line 1 and a retracted position retracting from the conveyor line 1. When in the extended position, the movable blocking structure 7 can block the battery module from moving forward. When in the retracted position, the movable blocking structure 7 can allow the battery module to pass through. There are many specific mechanisms, which are not limited in this embodiment.

[0170] Through the above embodiment, the movable blocking structure 7 can move on the conveyor line 1 to have two positions: extending the conveyor line 1 and retracting the conveyor line 1. When extending the conveyor line 1, the movable blocking structure 7 can block the battery module, thereby stopping it at the pressurizing station, facilitating subsequent pressurizing actions and improving production efficiency.

[0171] Please continue to refer to Figure 1. In some embodiments, the module pressurizing device 100 also includes an anti-deflection detection device 9, which is used to detect the position of the battery module after the supporting mechanism 2 is activated to generate a corresponding detection signal; the control device is electrically connected to the anti-deflection detection device 9 to control the action of the pressurizing mechanism 3 when the detection signal is a normal signal.

[0172] It should be noted that the function of the anti-deviation detection device 9 is to detect whether the position of the battery module is offset. If the battery module is loaded on a tray 200, it will reflect whether the placement position of the battery module on the tray 200 is accurate. The specific detection method can be that the anti-deviation detection device 9 can be an infrared sensor. The recognition range of the infrared sensor is strongly correlated with the position where the battery module needs to appear, that is, when the battery module is offset, it can enter the recognition range of the infrared sensor to be detected by it. The anti-deviation detection device 9 can also be a visual camera to identify the position of the battery module by taking pictures. This embodiment does not limit its specific structure.

[0173] Through the above embodiment, the anti-deviation detection device 9 can detect the position of the battery module after the supporting mechanism 2 is actuated. Only after ensuring that the position of the battery module is accurate, the detection signal fed back is a normal signal. The control device can control the pressurizing mechanism 3 to follow up to complete the pressurization. When there is an offset in the position of the battery module, the detection signal fed back by the anti-deviation detection device 9 is an abnormal signal. The control device controls the pressurizing mechanism 3 to stop the action, and at the same time warns the operator to make timely adjustments to the battery module, or controls other adjustment mechanisms to adjust the battery module until the position of the battery module is restored to accuracy, thereby avoiding production losses caused by the battery module not being placed in place.

[0174] The present application also provides a pressurizing method for a module pressurizing device 100. Please refer to FIG5 , which is a flow chart of a first embodiment of the pressurizing method provided by the present application. The module pressurizing device 100 has a pressurizing station for maintaining pressure on a battery module with a heat sink bonded to the bottom. The module pressurizing device 100 includes a supporting mechanism 2, a pressurizing mechanism 3, and a conveyor line 1.

[0175] Pressurization methods include:

[0176] S10, station entry step: controlling the conveyor line 1 to transfer the battery module to the pressurizing station;

[0177] Among them, upstream of the pressurizing station is generally the installation station of the heat sink. The battery module can be automatically transferred to the pressurizing station through the conveyor line 1, realizing the automatic transportation of the battery module.

[0178] S30, lifting step: controlling the lifting mechanism 2 to work so as to support the heat sink from the bottom;

[0179] Among them, by controlling the operation of the lifting mechanism 2, the battery module that has reached the pressurizing station can be lifted up and separated from the conveyor line 1, and the lifting mechanism 2 can stably carry the battery module with a heavier weight.

[0180] S40, pressure maintaining step: controlling the pressurizing mechanism 3 to pressurize the battery module from the top and maintaining the pressure for a target time.

[0181] Among them, by controlling the operation of the pressurizing mechanism 3, the pressure on the battery module can be released from the top, thereby cooperating with the supporting mechanism 2 to clamp the heat sink and the battery module, so that the thermal conductive glue coated between the two can withstand extrusion and spread out.

[0182] In the technical solution of the embodiment of the present application, the automated conveying of the conveyor line 1 can improve the transfer efficiency of the battery module and improve the production efficiency of the battery pack production line. Afterwards, the battery module can be supported and separated from the conveyor line 1 through the supporting mechanism 2, thereby avoiding the conveyor line 1 from being subjected to the pressurizing force. Under the cooperation of the pressurizing mechanism 3, the thermal conductive glue between the battery module and the heat sink can be fully squeezed and evenly spread, so that the thermal conductive glue is present at each local position on the heating surface of the battery module, thereby improving the heat dissipation efficiency of the battery module.

[0183] Please refer to FIG6 , which is a flow chart of a second embodiment of the pressurizing method provided by the present application. In some embodiments, the pressurizing mechanism 3 includes a plurality of pressurizing components 3 a , each of which includes a driving structure 31 and a pressing plate structure 32 ;

[0184] The pressure holding step includes:

[0185] S41 , controlling the multiple driving structures 31 to respectively drive the multiple pressing plate structures 32 to pressurize the multiple rows of battery cells of the battery module, and maintaining the pressure for a target time.

[0186] Through the above embodiment, multiple driving structures 31 can be driven and controlled separately, thereby realizing controllable local pressure, so that the force at various positions on the battery module is uniform, that is, it ensures that the pressure at various positions of the thermal conductive adhesive between the battery module and the heat sink is uniform. At the same time, maintaining the pressure for a target time can prevent the thermal conductive adhesive from shrinking, so that it can remain in close contact with the heat sink and the battery module, thereby improving the heat dissipation efficiency of the battery module.

[0187] Please refer to FIG. 7 , which is a flow chart of a third embodiment of the pressurizing method provided by the present application. In some embodiments, the module pressurizing device 100 further includes an anti-deflection detection device 9 for detecting the position of the battery module after the supporting mechanism 2 is actuated, and feeding back a corresponding detection signal to the control device.

[0188] The pressure holding step includes:

[0189] S42: After the heat sink is supported and the detection signal fed back by the anti-deflection detection device 9 is a normal signal, the pressurizing mechanism 3 is controlled to pressurize the battery module from the top and maintain the pressure for a target time.

[0190] Among them, after the battery module is transported to the pressurizing station by the conveyor line 1, it needs to be supported by the supporting mechanism 2 to separate from the conveyor line 1. Therefore, during the supporting process, the position of the battery module may change, or the battery module may have a position offset on the conveyor line 1. If these position changes or position offsets are not detected and adjusted and compensated in time, they will undoubtedly affect the pressurization of the pressurizing mechanism 3.

[0191] Through the above embodiment, the anti-deviation detection device 9 is set to sense the position status of the battery module, so that when it is in an accurate position, the detection signal fed back by the anti-deviation detection device 9 is a normal model, and the control device can control the pressurizing mechanism 3 to accurately pressurize the battery module, thereby ensuring the pressurization quality. When the battery module is in an inaccurate position, the detection signal fed back by the anti-deviation detection device 9 is an abnormal model, and the control device can control the pressurizing mechanism 3 to stop pressing down, so that the operator or other adjustment device can adjust the position of the battery module to ensure the pressurization quality.

[0192] Please refer to FIG8 , which is a schematic flow chart of a fourth embodiment of the pressurizing method provided by the present application. In some embodiments, the conveyor line 1 is used to convey battery modules via a tray 200 , and the module pressurizing device 100 further includes a tray positioning device 8 ;

[0193] After the pit stop step, the pressurization method also includes:

[0194] S20 , positioning step: controlling the tray positioning device 8 to operate so as to position the tray 200 .

[0195] Among them, the pressurizing mechanism 3 has a high pressurizing accuracy for the battery module. When there is a large deviation in the position of the battery module in the pressurizing station, it may cause incomplete pressurization, that is, the heat sink is partially not under pressure. The movement of the battery module on the conveyor line 1 is usually not carried out directly, but also needs to be carried by the tray 200. Under the premise of correct placement, the relative position of the battery module and the tray 200 is fixed. Therefore, the position of the battery module can be fixed by fixing the position of the tray 200.

[0196] Through the above embodiment, the incoming pallet 200 is positioned at the pressurizing station by the pallet positioning device 8, so that the battery module can be accurately positioned at the pressurizing station to be precisely aligned with the pressurizing mechanism 3, thereby ensuring the pressurizing accuracy and improving the product quality rate.

[0197] Please refer to FIG9 , which is a schematic flow chart of a fifth embodiment of the pressurization method provided by the present application. In some embodiments, after the pressure-maintaining step, the pressurization method further includes:

[0198] S50, pressure relief step: controlling the pressurizing mechanism 3 to rise to separate from the battery module;

[0199] S60, falling back step: controlling the supporting mechanism 2 to fall back to separate from the heat sink.

[0200] Among them, in the production line, the incoming materials are continuous, so as to ensure the uninterrupted production of products. Therefore, the movement of the equipment in the production line is usually reciprocating, so that after processing one piece of incoming material, it returns to the initial position to wait for the processing of the next piece of incoming material.

[0201] Through the above embodiment, after the pressure holding step, the pressurization and pressure holding operations of the battery module and the heat sink have been completed. At this time, by setting the pressure relief step, the pressurizing mechanism 3 can be restored to the initial position, thereby disengaging from the battery module. At the same time, by setting the fallback step, the supporting mechanism 2 can be restored to the initial position, thereby disengaging from the heat sink. At this time, the battery module can return to the conveyor line 1, so that it can be conveyed to the next station through the conveyor line 1. After this, the module pressurizing equipment 100 can be restored to an idle state, and the conveyor line 1 can convey the next battery module to the pressurizing station in time, thereby realizing the uninterrupted pressurization operation of the module pressurizing equipment 100 on the battery module, thereby ensuring production efficiency.

[0202] Please continue to refer to FIG9 . In some embodiments, a movable blocking structure 7 is further provided on the conveying line 1 of the module pressurizing device 100 .

[0203] The steps of the pit stop include:

[0204] S11, controlling the movable blocking structure 7 to rise and controlling the conveyor line 1 to operate, so as to transfer the battery module to the pressurizing station until it is blocked by the movable blocking structure 7;

[0205] Among them, the two actions of controlling the lifting of the movable blocking structure 7 and controlling the conveying work can be performed simultaneously or separately, as long as it can be ensured that the battery module can be blocked by the movable blocking structure 7 in time after being conveyed to the pressurizing station by the conveyor line 1; there are many types of movable blocking structures 7 on the conveyor line 1, and this embodiment does not limit them; the movable blocking structure 7 can directly block the battery module, and can also indirectly block the battery module by loading the battery module through the tray 200.

[0206] Correspondingly, after the fallback step, the pressurization method further includes an exit step, which includes:

[0207] S70 , controlling the movable blocking structure 7 to fall back and controlling the conveyor line 1 to operate, so as to transfer the battery module to the next station.

[0208] Similarly, the two actions of controlling the movable blocking structure 7 to fall back and controlling the operation of the conveyor line 1 can be performed simultaneously or separately. As long as it can be ensured that the battery module can be promptly transported to the next workstation by the conveyor line 1 after pressurization, this embodiment does not limit it.

[0209] Through the above embodiment, a movable blocking structure 7 is provided on the conveyor line 1, which can extend the conveyor line 1 and retract the conveyor line 1 in its movable stroke, so that the battery module can be blocked at the pressurizing station, and the initial positioning of the battery module is achieved, which facilitates the pressurizing device to follow up on the pressurization and pressure-maintaining operations of the battery module, and can also release the pressurized battery module in time, thereby improving the pressurization efficiency of the module pressurizing equipment 100.

[0210] Please refer to FIG10 , which is a flow chart of a sixth embodiment of the pressurizing method provided by the present application. In some embodiments, the pressurizing mechanism 3 includes a driving structure 31 and a pressing plate structure 32 . The module pressurizing device 100 further includes two in-position detection devices 6 . The two in-position detection devices 6 are respectively used to feedback in-position signals indicating that the pressing plate structure 32 is in a corresponding position.

[0211] The pressure holding step includes:

[0212] S43, controlling the driving structure 31 to move, so as to drive the pressing plate structure 32 to move toward the supporting mechanism 2;

[0213] S44, after receiving the in-position signal fed back by one of the corresponding in-position detection devices 6, controlling the driving structure 31 to stop the action and maintain the target duration;

[0214] Correspondingly, the fallback steps include:

[0215] S61 , after receiving the in-position signal fed back by the corresponding other in-position detection device 6 , controlling the supporting mechanism 2 to fall back.

[0216] Typically, the driving position state of the driving structure 31 needs to be fed back to the control system in a timely manner so that the control system can perform timely feedback control on the driving structure 31 , thereby controlling the driving stroke of the driving structure 31 .

[0217] Through the above embodiment, during the movement of the pressure plate structure 32, the position state of the pressure plate structure 32 can be detected by the two in-place detection devices 6, and then the current state of the pressure plate structure 32 can be fed back to the control device. If the pressure plate structure 32 reaches the position where it is pressed against the battery module during the movement toward the supporting mechanism 2, the corresponding in-place detection device 6 can detect the position state in time, and the control device can control the driving structure 31 to stop working in time, thereby preventing excessive pressing on the battery module at the source and reducing the ineffective energy consumption of the driving structure 31. If the corresponding in-place detection device 6 is triggered during the process of the pressure plate structure 32 rising away from the supporting mechanism 2, it means that the pressurizing mechanism 3 returns to its initial position, and then the supporting mechanism 2 can be controlled to fall back, thereby realizing the initialization of the module pressurizing device 100, which is convenient for pressurizing the next battery module.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A module pressurizing device, characterized in that: The module pressurizing device has a pressurizing station for maintaining pressure on the battery module with a heat sink bonded to the bottom. The module pressurizing device includes: A conveyor line passes through the pressurizing station, and is used to convey the battery module; A pressurizing device is provided corresponding to the pressurizing station, the pressurizing device includes a supporting mechanism and a pressurizing mechanism opposite to each other along a first direction, the supporting mechanism has a plurality of supporting parts movable along the first direction, the plurality of supporting parts are arranged along a second direction, and are used to lift and support the heat dissipation plate to separate the battery module from the conveyor line, and the pressurizing mechanism is used to compress the battery module; and The control device is electrically connected to the supporting mechanism and the pressing mechanism to control the actions of the supporting mechanism and the pressing mechanism.

2. The module pressurizing device according to claim 1, wherein: The pressurizing mechanism includes a plurality of pressurizing components, each of which is arranged to correspond to at least one row of cells in the battery module. The pressurizing components include: a driving structure having a driving portion movable along a first direction; and a pressure plate structure, disposed on the driving portion, so as to be pressed against the at least one row of battery cells when the driving portion moves toward the supporting mechanism; The control device is electrically connected to the plurality of driving structures.

3. The module pressurizing device according to claim 2, characterized in that: Within the movable range of the driving part, the pressing plate structure can be pressed tightly against two rows of battery cell modules in the battery module.

4. The module pressurizing device according to claim 2, wherein: The driving structure includes a plurality of cylinders arranged along the length direction of the pressure plate structure, and the piston rods of the cylinders are connected to the pressure plate structure; The driving portion includes the piston rod.

5. The module pressurizing device according to claim 2, wherein: The pressing plate structure includes an insulating pressing plate, and the insulating pressing plate is used to press the battery core.

6. The module pressurizing device according to claim 5, wherein: The pressure plate structure further includes a connecting plate, which is arranged on the driving part, and the insulating pressure plate is detachably arranged on the connecting plate.

7. The module pressurizing device according to claim 5, characterized in that: A plurality of pressing protrusions are formed on the insulating pressing plate, and the plurality of pressing protrusions are used to press respectively onto the plurality of poles of the at least one row of battery cells.

8. The module pressurizing device according to claim 2, wherein: The module pressurizing device further includes an anti-fool-proof structure, which includes: Two matching parts, one of which is arranged on the pressure plate structure and the other is fixed relative to the position of the pressurizing station, and the two matching parts can be arranged in an aligned manner during the movable stroke of the pressure plate structure away from the supporting mechanism; and The connecting portion can connect the two matching portions when the two matching portions are arranged in an opposite position to limit the movement of the pressure plate structure toward the supporting mechanism.

9. The module pressurizing device according to claim 8, wherein: The fool-proof structure also includes: A placement portion, which is fixed relative to the pressurizing station, and the connecting portion can be selectively placed on the placement portion; and The in-position detection device is provided corresponding to the placement portion and is electrically connected to the control device to generate a warning signal after detecting the connection portion.

10. The module pressurizing device according to claim 2, wherein: The module pressurizing device includes a fixing portion, the fixing portion being fixed relative to the pressurizing station; The pressure plate structure is provided with a limiting portion opposite to the fixing portion along a first direction. When the pressure plate structure moves to a position that presses the at least one row of battery cells, the limiting portion can abut against the fixing portion.

11. The module pressurizing device according to claim 10, wherein: The fixing portion is provided with a shaft sleeve with a hole opened along the first direction; The pressure plate structure is provided with a guide shaft extending along the first direction. The guide shaft is passed through the shaft sleeve. The end of the guide shaft away from the pressure plate structure is formed with a mounting structure. The limiting portion is provided on the mounting structure.

12. The module pressurizing device according to claim 10, wherein: The limiting portion includes a limiting bolt, which is connected to the pressure plate structure through a threaded pair. During the screwing stroke of the limiting bolt, the position of the limiting bolt in the first direction is adjustable.

13. The module pressurizing device according to claim 2, wherein: The pressure plate structure is also provided with a sensing part; The module pressurizing device further includes two in-place detection devices spaced apart along a first direction, the two in-place detection devices being electrically connected to the control device; During the movable stroke of the pressure plate structure, the sensing part can sequentially reach the positions of the two in-place detection devices. The in-place detection devices are used to identify the sensing part and feed back an in-place signal to the control device.

14. The module pressurizing device according to any one of claims 1 to 13, characterized in that: The conveyor line is provided with a tray for conveying the battery modules, the tray having a bottom end and a top end opposite to each other along a first direction, and a plurality of clearance channels connecting the bottom end and the top end, the top end being used to place the battery modules; When the tray is at the pressurizing station, the supporting portion can support the battery module through the corresponding clearance channel within its movable stroke.

15. The module pressurizing device according to claim 14, wherein: The module pressurizing equipment further includes a pallet positioning device provided corresponding to the pressurizing station, and the pallet positioning device is used to position the pallet.

16. The module pressurizing device according to any one of claims 1 to 13, characterized in that: The conveyor line is further provided with a movable blocking structure, which can block the battery module at the pressurizing station.

17. The module pressurizing device according to any one of claims 1 to 13, characterized in that: The module pressurizing device further includes an anti-deflection detection device for detecting the position of the battery module after the supporting mechanism is actuated to generate a corresponding detection signal; The control device is electrically connected to the anti-deflection detection device to control the action of the pressurizing mechanism when the detection signal is a normal signal.

18. A pressurizing method for a module pressurizing device, characterized in that: The module pressurizing equipment has a pressurizing station for maintaining pressure on the battery module with a heat sink bonded to the bottom. The module pressurizing equipment includes a supporting mechanism, a pressurizing mechanism and a conveying line. The pressurization method includes: Entering the station step: controlling the conveyor line to work so as to transfer the battery module to the pressurizing station; Lifting step: controlling the supporting mechanism to support the heat sink from the bottom; Pressure maintaining step: controlling the pressurizing mechanism to pressurize the battery module from the top and maintaining the pressure for a target time.

19. The pressurizing method according to claim 18, wherein: The pressurizing mechanism includes a plurality of pressurizing components, each of which includes a driving structure and a pressing plate structure; The pressure maintaining step includes: The plurality of driving structures are controlled to move respectively, so as to drive the plurality of pressure plate structures to pressurize the plurality of rows of battery cells of the battery module and maintain the pressure for a target time.

20. The pressurizing method according to claim 18, wherein The module pressurizing device further includes an anti-deflection detection device for detecting the position of the battery module after the supporting mechanism is actuated and feeding back a corresponding detection signal to the control device; The pressure maintaining step includes: After the heat sink is supported and the detection signal fed back by the anti-deflection detection device is a normal signal, the pressurizing mechanism is controlled to pressurize the battery module from the top and maintain the pressure for a target time.

21. The pressurizing method according to claim 18, wherein The conveyor line is used to convey the battery module via a pallet, and the module pressurizing device further includes a pallet positioning device; After the station entry step, the pressurization method further includes: Positioning step: controlling the tray positioning device to operate so as to position the tray.

22. The pressurizing method according to claim 18, wherein: After the pressure maintaining step, the pressurizing method further comprises: Pressure relief step: controlling the pressurizing mechanism to rise to separate from the battery module; Falling back step: controlling the supporting mechanism to fall back to separate from the heat sink.

23. The pressurizing method according to claim 22, wherein: The conveying line of the module pressurizing device is also provided with a movable blocking structure; The entry step includes: Controlling the movable blocking structure to rise and controlling the conveying line to operate so as to transfer the battery module to the pressurizing station until it is blocked by the movable blocking structure; Correspondingly, after the fallback step, the pressurization method further includes an exit step, and the exit step includes: The movable blocking structure is controlled to fall back and the conveying line is controlled to operate so as to transfer the battery module to the next workstation.

24. The pressurizing method according to claim 22, wherein: The pressurizing mechanism includes a driving structure and a pressing plate structure, and the module pressurizing device also includes two in-place detection devices, the two in-place detection devices are respectively used to feedback in-place signals indicating that the pressing plate structure is in a corresponding position; The pressure maintaining step includes: Controlling the driving structure to move so as to drive the pressing plate structure to move toward the supporting mechanism; After receiving the arrival signal fed back by the corresponding one of the arrival detection devices, controlling the driving structure to stop the action and maintain the target duration; Correspondingly, the fallback step includes: After receiving the in-position signal fed back by the corresponding other in-position detection device, the supporting mechanism is controlled to fall back.

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