Battery module boxing equipment and method and battery production system

Abstract

The invention provides battery module boxing equipment, a battery module boxing method and a battery production system, and belongs to the technical field of batteries. The battery module boxing equipment comprises a clamping mechanism, a support, a first lifting mechanism and a second lifting mechanism. The clamping mechanism is used for clamping a battery module, the first lifting mechanism comprises a first driving part connected with the support and a shaft body in transmission connection with the first driving part, the shaft body is connected with the clamping mechanism, and the shaft body and the clamping mechanism are jointly driven by the first driving part to move in the vertical direction. The second lifting mechanism is fixedly connected with the shaft body, and the second lifting mechanism is constructed to drive the battery module to move in the vertical direction in a mode independent of the first lifting mechanism. And through two-section type descending and box entering of the battery modules, the box entering efficiency of the battery modules is improved, and the interference phenomenon in the box entering process of the battery modules is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module loading device, method and battery production system. Background Technology

[0002] Currently, with the increasing demand for battery capacity, in order to increase battery capacity, multiple battery cells are usually connected in series to form a battery pack, and multiple battery packs are arranged in double rows or multiple rows to form a battery module.

[0003] In the subsequent production of battery modules, the battery modules need to be placed into a box. Typically, multiple battery modules are placed inside a single battery box, and these modules are sequentially placed into the box to form a battery. The process of placing the battery modules into the box is inefficient and prone to interference. Summary of the Invention

[0004] This application aims to at least address one of the technical problems existing in the background art. Therefore, one object of this application is to provide a battery module packing device, method, and battery production system to improve / mitigate / solve the problems in the related art.

[0005] An embodiment of the first aspect of this application provides a battery module loading device, including a clamping mechanism, a bracket, a first lifting mechanism, and a second lifting mechanism. The clamping mechanism is used to clamp the battery module. The first lifting mechanism includes a first driving member connected to the bracket and a shaft drively connected to the first driving member. The shaft is connected to the clamping mechanism and moves vertically together with the clamping mechanism under the drive of the first driving member. The second lifting mechanism is fixedly connected to the shaft and is configured to drive the battery module to move vertically independently of the first lifting mechanism.

[0006] In the technical solution of this application embodiment, the battery module is lowered into the box in two stages by setting a first lifting mechanism and a second lifting mechanism, which improves the efficiency of the battery module entering the box and reduces the interference phenomenon during the battery module entering the box.

[0007] In some embodiments, the shaft includes a first end and a second end opposite each other in a vertical direction. The first end is drively connected to a first drive member, and the second end has a first receiving cavity extending in a vertical direction. At least a portion of the second lifting mechanism is received within the first receiving cavity. This makes the overall structure more compact, thereby reducing the space occupied by the battery module mounting device.

[0008] In some embodiments, the bracket has a second receiving cavity extending vertically, and the first end of the shaft is disposed in the second receiving cavity and is drively connected to the first driving member. This makes the overall structure more compact, thereby reducing the space occupied by the battery module mounting device.

[0009] In some embodiments, the outer surface of the shaft is provided with at least one guide structure extending in a vertical direction, and the shaft is slidably connected to the inner surface of the bracket defining the second receiving cavity through the guide structure. This improves the stability of the shaft during movement.

[0010] In some embodiments, the battery module loading device further includes a displacement detection component, which detects the distance the shaft of the first lifting mechanism moves vertically. This determines whether the battery module has descended to the correct position, providing a reference for controlling the first driving component.

[0011] In some embodiments, the displacement detection component is configured as a magnetic scale, which includes a magnetic scale and a reading head for reading the magnetization signal on the magnetic scale. The reading head is fixed to the shaft, and the magnetic scale is fixed to a bracket. The magnetic scale has high precision, good stability, and strong anti-interference ability, thus improving the accuracy of shaft displacement detection.

[0012] In some embodiments, the battery module loading device further includes a balancing cylinder, which includes a cylinder body and a piston rod movably connected together. One of the cylinder body and the piston rod is fixed to a shaft, and the other is fixedly connected to a bracket. The balancing cylinder is configured to adjust the pressure inside the cylinder according to the distance the shaft moves vertically. By setting up the balancing cylinder, the entire lifting motion component can maintain dynamic gravity balance during the first stage of lifting, improving the stability and control accuracy of battery module loading, reducing the risk of fall in case of transmission failure, and improving the reliability of battery module loading operations.

[0013] In some embodiments, the battery module loading device further includes a braking assembly; the braking assembly is used to limit the vertical movement of the shaft. This improves the accuracy of the shaft's descent position and the reliability of positioning during descent and maintenance.

[0014] In some embodiments, the braking assembly includes a plurality of toothed slots connected to the outer surface of the shaft and spaced apart in a vertical direction, and a braking element fixedly connected to a bracket. The output end of the braking element is configured to move between a first position located within the toothed slots and a second position completely away from the toothed slots. This improves the reliability of shaft braking, thereby improving the accuracy of the shaft's position after the first stage of descent.

[0015] In some embodiments, the braking element is further configured to move its output end to a first position in response to a difference between the distance the shaft moves vertically and the value of the servo encoder of the first drive element being greater than a preset threshold. By actively controlling the movement of the braking element based on the displacement detection result, the movement of the shaft can be braked in a timely and effective manner in the event of abnormal conditions, reducing the risk of the shaft falling out of control and improving the reliability of the box-loading operation.

[0016] In some embodiments, the braking assembly further includes a socket disposed on the outer surface of the shaft and a pin movably connected to a bracket, the pin being configured to move between a third position within the socket and a fourth position completely away from the socket. This further locks the shaft in the current position, reducing the safety hazard of accidental shaft falls and improving safety during maintenance.

[0017] In some embodiments, the second lifting mechanism includes a second driving member and a connecting assembly located at the output end of the second driving member. The second driving member is fixedly connected to the shaft and drives the connecting assembly to move vertically. The connecting assembly is used to connect to the battery module in a detachable manner. This improves the reliability of the connection between the battery module and the output end of the second driving member, thereby improving the stability of the battery module during the second descent process.

[0018] In some embodiments, the connecting assembly includes at least one adsorption unit for adsorbing and connecting with the surface of the battery module. This improves the ease of connecting the adsorption unit to the battery module, reduces damage to the outer surface of the battery module caused by the adsorption unit, and also reduces interference between the adsorption unit and the battery housing or the battery module already placed in the housing.

[0019] In some embodiments, the connecting assembly further includes a pressing unit configured to move vertically, wherein the lowest point of the pressing unit moving vertically is lower than the lowest point of at least one adsorption unit. This allows the battery module and the bottom of the battery housing to fit together as closely as possible, i.e., to assemble the battery module as accurately as possible, thus improving the assembly precision of the battery module.

[0020] In some embodiments, the vertical displacement range of the output end of the first lifting mechanism is greater than the vertical displacement range of the output end of the second lifting mechanism. During the first stage of descent, a larger descent distance is required; therefore, the descent speed during the first stage can be appropriately increased to allow the battery module to quickly descend to a position close to the battery housing, thereby improving the efficiency of the entire insertion operation. During the second stage of descent, the battery module gradually enters the battery housing; at this time, the second lifting mechanism facilitates a slower descent to improve stability.

[0021] An embodiment of the second aspect of this application provides a battery production system, which includes the battery module loading device described in the above embodiments.

[0022] An embodiment of the third aspect of this application provides a battery module loading method, applied to the battery module loading device as described in the above embodiment, comprising: controlling a clamping mechanism to clamp the battery module and move it above the battery box; controlling a first lifting mechanism to adjust the clamping mechanism and the battery module to a preset height position above the battery box; controlling the clamping mechanism to release the battery module; and controlling a second lifting mechanism to lower the battery module into the battery box.

[0023] By using a two-stage descent method for battery modules into the box, the efficiency of battery module loading into the box is improved, and interference during the loading process is reduced.

[0024] In some embodiments, controlling the first lifting mechanism to adjust the clamping mechanism and battery module to a preset height position above the battery box includes: acquiring the vertical movement distance of the shaft; and controlling the braking component to restrict the vertical movement of the shaft if the difference between the vertical movement distance of the shaft and the servo encoder value of the first drive component is greater than a preset threshold. By comparing the vertical movement distance of the shaft with the detection result of the servo encoder of the first drive component, it is possible to determine whether there is any abnormality in the shaft during the first descent, reducing the risk of uncontrolled descent of the shaft due to failure of the first drive component and improving the reliability of the operation.

[0025] In some embodiments, controlling the first lifting mechanism to adjust the clamping mechanism and the battery module to a preset height position above the battery box further includes: obtaining the vertical movement distance of the shaft; adjusting the pressure inside the cylinder of the balancing cylinder according to the detection result; the balancing cylinder includes a cylinder body and a piston rod that are movably connected, one of the cylinder body and the piston rod being fixedly connected to the shaft body, and the other of the cylinder body and the piston rod being fixedly connected to the bracket. By adjusting the pressure inside the cylinder of the balancing cylinder, the shaft body can achieve dynamic gravity balance during the first lifting process, thereby improving the stability and reliability of the battery module.

[0026] In some embodiments, before the clamping mechanism releases the battery module, the method further includes controlling the adsorption unit of the second lifting mechanism to adsorb onto the top surface of the battery module. The adsorption unit's connection to the battery module simplifies the connection and separation between the second lifting mechanism and the battery module, and facilitates automated control, improving the electrification level and operational efficiency of the loading operation.

[0027] In some embodiments, after controlling the second lifting mechanism to lower the battery module to the bottom of the battery box, the process includes: releasing the adsorption unit from the battery module; and controlling the top-pressing unit of the second lifting mechanism to move vertically downward to apply a force to the battery module toward the bottom of the box. By applying a force to the battery module through the top-pressing unit, the battery module and the bottom of the battery box can fit together as closely as possible, that is, the battery module is assembled into place as much as possible, thus improving the quality of battery module assembly.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0029] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0030] Figure 1 This is a schematic diagram of the overall structure of the battery module box-loading device according to some embodiments of this application;

[0031] Figure 2 This is one of the partial structural schematic diagrams of a battery module box-loading device according to some embodiments of this application;

[0032] Figure 3 This is a schematic diagram of the structure of the shaft in some embodiments of this application;

[0033] Figure 4 This is a second partial structural schematic diagram of a battery module box-loading device according to some embodiments of this application;

[0034] Figure 5 for Figure 4 A magnified structural diagram at point A;

[0035] Figure 6 This is the third partial structural schematic diagram of a battery module box-loading device according to some embodiments of this application;

[0036] Figure 7 for Figure 4 A magnified structural diagram at point B;

[0037] Figure 8 This is a flowchart illustrating a battery module loading method according to some embodiments of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Battery module packing equipment;

[0040] 10. Clamping mechanism;

[0041] 11. Bracket; 110. Pin-type storage bracket;

[0042] 12. First lifting mechanism; 120. First driving component; 121. Shaft; 1210. First receiving cavity; 1211. Guide structure;

[0043] 13. Second lifting mechanism; 130. Second driving component; 131. Connecting assembly; 1310. Adsorption unit; 1311. Top pressure unit;

[0044] 14. Displacement detection assembly; 140. Magnetic scale; 141. Reading head;

[0045] 15. Balance cylinder;

[0046] 16. Braking assembly; 160. Tooth groove; 161. Braking element; 162. Pin;

[0047] F. Vertical direction. Detailed Implementation

[0048] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0054] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0056] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0057] Currently, with the increasing demand for battery capacity, multiple battery cells are typically connected in series to form battery packs, and multiple battery packs are arranged in double or multi-row configurations to form battery modules. In the subsequent production of battery modules, they need to be placed into boxes. Usually, multiple battery modules are placed inside a battery box, and these multiple battery modules are sequentially placed into the box to form a battery.

[0058] One method of placing battery modules into the battery box involves lifting the battery module above the battery box and then gradually lowering it into the battery box. During this process, in order to reduce the shaking and displacement of the battery module, the descent speed is limited, resulting in low efficiency. Furthermore, when the space available for placing the battery module inside the battery box is small, the components used to lift the battery module are prone to interference with the battery box, making it difficult to place the module.

[0059] Based on the above considerations, this application provides a battery module loading device, method, and battery production system. The battery module loading device includes: a clamping mechanism, a bracket, a first lifting mechanism, and a second lifting mechanism. The clamping mechanism is used to clamp the battery module. The first lifting mechanism includes a first driving member connected to the bracket and a shaft driven by the first driving member. The shaft is connected to the clamping mechanism and moves vertically together with the clamping mechanism under the drive of the first driving member. The second lifting mechanism is fixedly connected to the shaft and is configured to drive the battery module to move vertically independently of the first lifting mechanism.

[0060] By incorporating a first lifting mechanism and a second lifting mechanism, the battery module is lowered into the battery box in two stages, improving the efficiency of battery module placement and reducing interference during the process. When the battery module needs to be placed into the box, a clamping mechanism holds it in place, positioning it above the battery box. A first drive unit then drives the shaft, the second lifting mechanism, the clamping mechanism, and the battery module in a vertical first-stage descent, bringing the battery module as close to the battery box as possible. Because the battery module is clamped, the descent speed during this first stage can be increased, thus improving overall placement efficiency. The second lifting mechanism then independently lowers the battery module in a second stage until it reaches the bottom of the battery box. During this second stage, the clamping mechanism separates from the battery module, meaning it does not continue to descend with the battery module, reducing interference between the clamping mechanism and the battery box or the battery module inside the battery box. The shaft provides stable support for the second lifting mechanism, reducing the shaking and offset of the battery module during the loading process, and further reducing interference during loading.

[0061] The battery module loading equipment disclosed in this application can be used, but is not limited to, for loading battery modules into boxes during battery production. A battery production system equipped with the battery module loading equipment disclosed in this application can be used for loading battery modules into boxes during battery production.

[0062] like Figures 1 to 4 As shown, Figure 1 This is a schematic diagram of the overall structure of a battery module box-loading device according to some embodiments of this application. Figure 2 This is one of the partial structural schematic diagrams of a battery module box-loading device according to some embodiments of this application. Figure 3 This is a schematic diagram of the structure of the shaft in some embodiments of this application. Figure 4 This is a second partial structural schematic diagram of a battery module box-loading device according to some embodiments of this application.

[0063] This application provides a battery module loading device 1, including: a clamping mechanism 10, a bracket 11, a first lifting mechanism 12, and a second lifting mechanism 13. The clamping mechanism 10 clamps the battery module. The first lifting mechanism 12 includes a first driving member 120 connected to the bracket 11 and a shaft 121 pulverizedly connected to the first driving member 120. The shaft 121 is connected to the clamping mechanism 10 and moves vertically along the direction F together with the clamping mechanism under the drive of the first driving member 120. The second lifting mechanism 13 is fixedly connected to the shaft 121 and is configured to drive the battery module to move vertically along the direction F independently of the first lifting mechanism 12.

[0064] The clamping mechanism 10 refers to a component capable of applying clamping force to the battery module to clamp it and prevent it from falling out. The clamping mechanism 10 may include a gripper assembly that clamps the battery module in different directions, and may also include a drive mechanism that drives the gripper assembly to move.

[0065] The first driving component 120 can be any feasible power component. In some embodiments, the first driving component 120 can be a cylinder, hydraulic cylinder, or motor, etc. The shaft 121 can be an elongated structural component extending in the vertical direction, such as a columnar structural component, a square tubular structural component, or a round tubular structural component. Specifically, the shaft 121 can be manufactured by integral molding, or it can be obtained by splicing multiple plates, profiles, or a combination of both.

[0066] The transmission connection refers to the power output by the first driving component 120 being transmitted to the shaft 121 through a mechanical transmission mechanism, so that the shaft 121 moves in the vertical direction F. The mechanical transmission mechanism can be, but is not limited to, a ball screw transmission mechanism, a gear transmission mechanism, a belt transmission mechanism, a steel belt transmission mechanism, etc., and is not specifically limited here.

[0067] The first driving member 120 of the first lifting mechanism 12 is used to drive the shaft 121 to move up and down in the vertical direction F. The second lifting mechanism 13 can be fixed at the lowest end of the shaft 121, so that the shaft 121 drives the second lifting mechanism 13, the clamping mechanism 10 and the battery module on the clamping mechanism 10 to move relative to the bracket 11 in the vertical direction F.

[0068] The output end of the second lifting mechanism 13 can be connected to the battery module to drive the battery module to move vertically. When the battery module is driven to move vertically in the direction F by the second lifting mechanism 13 alone, the shaft 121 provides stable support for the second lifting mechanism 13. The shaft 121 and the clamping mechanism 10 are relatively stationary. It can be understood that the clamping mechanism 10 can be separated from the battery module at this time, and the battery module can be driven into the box by the second lifting mechanism 13 alone.

[0069] In some embodiments, the second lifting mechanism 13 may be a cylinder, a hydraulic cylinder, or a motor, etc.

[0070] By setting up a first lifting mechanism 12 and a second lifting mechanism 13, the battery module is lowered into the battery box in two stages, improving the efficiency of battery module placement and reducing interference during the process. When the battery module needs to be placed into the box, the clamping mechanism 10 clamps the battery module, positioning it above the battery box. The first drive component 120 drives the shaft 121, the second lifting mechanism 13, the clamping mechanism 10, and the battery module to descend vertically in the first stage F, bringing the battery module as close to the battery box as possible. Because the battery module is clamped by the clamping mechanism 10, the descent speed of the battery module during the first stage can be appropriately increased, thereby improving the overall placement efficiency. Then, the second lifting mechanism 13 independently drives the battery module for the second stage of descent until the battery module reaches the bottom of the battery box. During the second stage of descent, the clamping mechanism 10 separates from the battery module, meaning the clamping mechanism 10 does not continue to descend with the battery module, reducing interference between the clamping mechanism 10 and the battery box or the battery module inside the battery box. The shaft 121 provides stable support for the second lifting mechanism, reducing the shaking and offset of the battery module during the loading process, and further reducing interference during the loading process.

[0071] like Figures 1 to 3 As shown, according to some embodiments of this application, the shaft 121 includes a first end and a second end opposite to each other in the vertical direction. The first end is connected to the first drive member 120 in a transmission manner, and the second end has a first receiving cavity 1210 extending in the vertical direction F. At least a portion of the second lifting mechanism 13 is received in the first receiving cavity 1210.

[0072] The shaft 121 extends in the vertical direction F, that is, the shaft 121 has a certain length, so that the second end of the shaft 121 has enough space to arrange the first receiving cavity 1210 extending in the vertical direction F, and then the first receiving cavity 1210 with a certain length can accommodate at least a part of the second lifting mechanism 13.

[0073] The shaft 121 can be a completely hollow tubular structure or a partially hollow structure, for example, the second end is a hollow structure to form a first receiving cavity 1210.

[0074] The second lifting mechanism 13 is accommodated by the first receiving cavity 1210, thereby making full use of the space inside the shaft 121. While protecting the second lifting mechanism 13, the overall structure is more compact, reducing the length of the battery module box-in device along the vertical direction F, and thus reducing the space occupied by the battery module box-in device 1.

[0075] like Figure 1 , Figure 2 and Figure 4 As shown, according to some embodiments of this application, the bracket 11 has a second receiving cavity extending in the vertical direction F, and the first end of the shaft 121 is disposed in the second receiving cavity and is connected to the first driving member 120 in a transmission manner.

[0076] The bracket 11 is a fixed assembly used to support other moving parts. The bracket 11 can be a cover-shaped structure that extends in the vertical direction F and has a bottom opening. The first end of the shaft 121 is located in the second receiving cavity. The shaft 121 and the first driving member 120 can be connected by any feasible transmission method, such as gear rack, ball screw, etc.

[0077] In some embodiments, the first driving member 120 is a motor, which is fixed on the bracket 11. The output shaft of the motor is connected to a lead screw that extends in the vertical direction. A nut sleeved on the lead screw is connected to the shaft 121. The rotation of the lead screw drives the nut and the shaft 121 to move in the vertical direction.

[0078] The first end of the shaft 121 is accommodated by the second receiving cavity, which not only protects the first end of the shaft 121, but also makes the overall structure more compact, further reducing the length of the battery module box-in device 1 in the vertical direction, thereby reducing the space occupied by the battery module box-in device 1.

[0079] like Figure 2 and Figure 4 As shown, according to some embodiments of this application, the outer surface of the shaft 121 is provided with at least one guide structure 1211 extending in the vertical direction, and the shaft 121 is slidably connected to the inner surface of the bracket defining the second receiving cavity through the guide structure 1211.

[0080] The guide structure 1211 is sandwiched between the inner surfaces of the shaft 121 and the bracket 11, so that when the shaft 121 moves up and down relative to the bracket 11, the guide structure 1211 can hold and guide the shaft 121.

[0081] In some embodiments, the guide structure 1211 may be a slide rail and a slider slidably disposed on the slide rail, the slider being fixedly connected to the inner surface forming the second receiving cavity. Slide rails may be disposed on multiple adjacent outer surfaces of the shaft 121, so that the shaft 121 is subjected to uniform force, further improving the stability of the shaft 121 during movement.

[0082] By setting a guide structure 1211 on the outer surface of the shaft 121, the shaft 121 can move stably and reliably along the vertical direction F on the bracket 11 under the guidance of the guide structure 1211, thereby improving the stability of the battery module during the first stage of descent.

[0083] like Figure 4 and Figure 5 As shown, Figure 5 for Figure 4 An enlarged structural schematic diagram at point A. According to some embodiments of this application, the battery module loading device 1 further includes a displacement detection component 14, which is used to detect the distance that the shaft 121 of the first lifting mechanism 12 moves in the vertical direction F.

[0084] The displacement detection component 14 can be any sensor capable of detecting the vertical movement distance of the shaft 121. In some embodiments, the displacement detection component 14 can be a displacement sensor, specifically a photoelectric sensor, an infrared sensor, or a vision sensor used to detect displacement or distance.

[0085] By setting the displacement detection component 14, the distance moved by the shaft 121 is detected, and then the distance the battery module descends during the first descent is detected. This determines whether the battery module has descended to the correct position, so as to provide a reference for the control of the first drive component 120 and improve the accuracy of the battery module entering the box.

[0086] like Figure 4 and Figure 5 As shown, according to some embodiments of this application, the displacement detection component 14 is configured as a magnetic scale, which includes a magnetic scale 140 and a reading head 141 for reading the magnetization signal on the magnetic scale 140. The reading head 141 is fixed on the shaft 121, and the magnetic scale 140 is fixed on the bracket 11.

[0087] The measurement principle of the magnetic scale is as follows: equally spaced magnetization signals are recorded on the magnetic scale 140. During the process of the reading head 141 moving along the magnetic scale 140 in a non-contact manner, the change of the magnetic field is sensed and the change of the magnetic field is converted into an analog signal or a digital signal for output.

[0088] In some embodiments, the magnetic ruler 140 is fixed to the outer surface of the bracket 11. The bracket 11 is provided with a slot extending in the vertical direction. The slot is used for the reading head 141 fixed on the shaft 121 to pass through and to provide space for the reading head 141 to move in the vertical direction. There is a certain distance between the reading head 141 and the magnetic ruler 140, and the reading head 141 moves relative to the magnetic ruler 140 in a non-contact manner.

[0089] By configuring the displacement detection component 14 as a magnetic scale, which has high precision, good stability and strong anti-interference ability, the accuracy of displacement detection of shaft 121 is improved.

[0090] like Figure 6 As shown, Figure 6 This is a third partial structural schematic diagram of a battery module loading device according to some embodiments of this application. According to some embodiments of this application, the battery module loading device 1 further includes a balancing cylinder 15, which includes a cylinder body and a piston rod movably connected together. One of the cylinder body and the piston rod is fixed to a shaft 121, and the other is fixedly connected to a bracket 11. The balancing cylinder 15 is configured to adjust the pressure within the cylinder body according to the distance the shaft 121 moves in the vertical direction F.

[0091] Since the shaft 121 itself has a certain weight, and the second lifting mechanism 13 is fixedly installed at the second end of the shaft 121, and there is even the weight of the clamped battery module, this further increases the weight of the overall structure in the vertical direction. The shaft 121, which is primarily connected to the first driving component 120 for transmission, is therefore unable to support its own significant weight. In this embodiment, a balance cylinder 15 is used to connect the shaft 121 and the bracket 11 respectively, thereby balancing the gravity of the shaft 121 and the second lifting mechanism 13, thus achieving more reliable lifting motion.

[0092] Since the shaft 121 needs to move vertically, its own weight needs to be dynamically balanced during the movement. The balancing cylinder 15 can accommodate changes in the distance between the shaft 121 and the bracket 11, which can be achieved by adjusting the length of the piston rod extending relative to the cylinder body. The relative movement between the cylinder body and the piston rod of the balancing cylinder 15 is achieved by the pressure inside the cylinder body, so the extension length of the piston rod can be adjusted by regulating the pressure inside the cylinder body.

[0093] In some embodiments, the pressure inside the cylinder of the balancing cylinder 15 can be dynamically adjusted in real time based on the results detected by the displacement detection component 14. For example, a controller can receive the detection results from the displacement detection component 14, calculate the pressure value to be adjusted based on the detection results, and output a corresponding control signal to the air pressure control unit of the balancing cylinder 15, thereby adjusting the pressure inside the cylinder of the balancing cylinder 15 in a timely manner. This allows for the dynamic maintenance of the gravity balance of the entire moving component without affecting the lifting and lowering movement of the shaft 121. Even if a transmission fault or failure occurs between the first drive component 120 and the shaft 121, effective gravity support can still be provided for the entire moving component, reducing the risk of sudden falls.

[0094] The cylinder body of the balance cylinder 15 is fixed to the first end of the shaft 121. The axis of the piston rod coincides with the axis of the shaft 121. The piston rod is connected to the center of the top of the bracket 11, so that the shaft 121 is subjected to relatively balanced forces.

[0095] By setting up a balance cylinder 15, the entire lifting motion component can maintain dynamic gravity balance during the first stage of lifting, which improves the stability and control accuracy of the battery module entering the box, reduces the risk of falling when the transmission fails, and improves the reliability of the battery module entering the box operation.

[0096] like Figure 4 and Figure 7 As shown, Figure 7 for Figure 4 Enlarged structural schematic diagram at point B. According to some embodiments of this application, the battery module loading device 1 further includes a braking assembly 16; the braking assembly 16 is used to limit the movement of the shaft 121 in the vertical direction F.

[0097] The braking assembly 16 is used to lock the shaft 121, for example, it can lock the position between the shaft 121 and the bracket 11 so that the shaft 121 remains in the current position.

[0098] In some embodiments, once the first segment of the shaft 121 has descended to its designated position, the shaft 121 needs to stop descending and remain in its current position. In other embodiments, if the first drive element 120 fails, causing the shaft 121 to descend rapidly, the shaft 121 needs to be locked in a timely manner to reduce safety hazards. In still other embodiments, when maintenance is required, the shaft 121 needs to be held in its current position to prevent accidental falls and thus improve safety during maintenance.

[0099] By setting the braking assembly 16 to restrict the movement of the shaft 121, the accuracy of the shaft 121's descent position and the reliability of its positioning during descent and maintenance are improved.

[0100] like Figure 7As shown, according to some embodiments of this application, the braking assembly 16 includes a plurality of toothed grooves 160 connected to the outer surface of the shaft 121 and spaced apart in the vertical direction F, and a braking element 161 fixedly connected to the bracket 11. The output end of the braking element 161 is configured to move between a first position located within the toothed grooves 160 and a second position completely away from the toothed grooves 160.

[0101] Multiple toothed grooves 160 can be continuously arranged vertically and fixedly installed on the outer surface of the shaft 121. The structural form of the toothed grooves 160 can be adapted according to specific locking requirements, and this application does not limit this. The braking element 161 is a component that cooperates with the toothed grooves 160. The braking element 161 can be fixedly installed on the bracket 11, and its output end can move back and forth between a first position and a second position. In some embodiments, the first position and the second position are on the same horizontal line, wherein the first position is located inside the toothed groove 160, that is, between two adjacent toothed grooves 160, and the second position is located outside the toothed groove 160. In this way, the output end of the braking element 161 can abut against the adjacent tooth of the toothed groove 160 in the first position, thereby achieving locking. In the second position, the output end of the braking element 161 is separated from the toothed groove 160 and the adjacent tooth, so as not to affect the vertical movement of the shaft 121.

[0102] In some embodiments, the braking element 161 can be configured as a cylinder and signal-connected to the displacement detection component 14. After the displacement detection component 14 detects that the shaft 121 has descended to the correct position, the output end of the cylinder extends to engage with the toothed groove 160, preventing the shaft 121 from moving further downward and thus restricting the shaft 121 to its current position. At this time, the output end is in the first position. After the shaft is inserted into the housing, the output end retracts and leaves the toothed groove 160, i.e., the output end separates from the toothed groove 160, and the shaft 121 is released, allowing it to move in the vertical direction F. At this time, the output end is in the second position.

[0103] By configuring the braking assembly 16 as a toothed groove 160 and a braking element 161, the braking and release of the shaft 121 can be achieved by extending and retracting the output end of the braking element 161, thereby improving the reliability of the braking of the shaft 121 and thus improving the accuracy of the position of the shaft 121 after completing the first stage of descent.

[0104] According to some embodiments of this application, the braking element 161 is also configured to drive the output end of the braking element 161 to move to a first position when the difference between the distance the shaft 121 moves along the vertical direction F and the value of the servo encoder of the first drive member 120 is greater than a preset threshold.

[0105] The first driving component 120 can be a motor. The servo encoder is a sensor arranged inside the motor and used to measure and provide feedback on the position and speed of the servo motor. The displacement value output by the motor can be detected through the servo encoder.

[0106] Normally, the displacement value detected by the servo encoder is consistent with the displacement value of the shaft 121, and the difference between the two is only within the allowable error range. In some special cases, such as when the shaft 121 suddenly falls, the actual displacement value of the shaft 121 will be significantly greater than the displacement value detected by the servo encoder. Therefore, a preset threshold can be set, and when the difference between the distance moved by the shaft 121 and the displacement value detected by the servo encoder exceeds the preset threshold, the output end of the braking element 161 is controlled to extend and move to the first position, thereby preventing the shaft 121 from falling further.

[0107] In some embodiments, the battery module loading device may include a controller, which may be signal-connected to the displacement detection component 14, the servo encoder and the braking component 16. In this way, the controller can receive the detection results of the displacement detection component 14 and the servo encoder, and output the corresponding control signal to the braking component 16 according to the detection results, so that the braking component 16 can perform the corresponding action, such as extending the output end of the braking element 161 and moving it to the first position.

[0108] By actively controlling the movement of the braking element 161 based on the displacement detection results, the movement of the shaft 121 can be braked in a timely and effective manner when abnormal conditions occur, reducing the risk of the shaft 121 falling out of control and improving the reliability of the box-entry operation.

[0109] like Figure 1 and Figure 4 As shown, according to some embodiments of this application, the braking assembly further includes a socket disposed on the outer surface of the shaft 121, and a pin 162 movably connected to the bracket 11, the pin 162 being configured to move between a third position located within the socket and a fourth position completely away from the socket.

[0110] In some embodiments, when maintenance is required, it is necessary to keep the shaft 121 in its current position. This can be achieved by inserting the pin 162 into the socket and engaging the braking element 161 to prevent the shaft 121 from accidentally falling, thereby improving safety during maintenance. A pin storage bracket 110 can be provided on the bracket 11. When the battery module loading device 1 is working normally, the pin 162 is temporarily placed in the pin storage bracket 110, at which time the pin 162 is in the fourth position. When maintenance is required, the pin 162 is removed from the pin storage bracket 110 and inserted into the socket, at which time the pin 162 is in the third position.

[0111] By setting the pin 162 to further lock the shaft 121 in the current position, the safety hazard of the shaft 121 falling accidentally is reduced and the safety during maintenance is improved.

[0112] like Figure 1 and Figure 2 As shown, according to some embodiments of this application, the second lifting mechanism 13 includes a second driving member 130 and a connecting component 131 located at the output end of the second driving member 130. The second driving member 130 is fixedly connected to the shaft 121 and drives the connecting component 131 to move in the vertical direction. The connecting component 131 is used to connect to the battery module in a detachable manner.

[0113] After the first descent is completed, the clamping mechanism 10 separates from the battery module. At this time, the battery module is only connected through the connecting component 131. The second driving component 130 drives the battery module to descend in the second stage through the connecting component 131. After the battery module descends to the bottom of the battery box, the connecting component 131 separates from the battery module.

[0114] In some embodiments, the second drive element 130 may be configured as a motor, cylinder, or hydraulic cylinder, etc. The connecting component 131 may be any separable connecting structure, such as a snap-fit ​​structure, an adsorption structure, etc.

[0115] By providing a connection component 131 that can be detachably connected to the battery module, the reliability of the connection between the battery module and the output end of the second drive unit 130 is improved, thereby enhancing the stability of the battery module during the second descent process.

[0116] According to some embodiments of this application, the connecting component 131 includes at least one adsorption unit 1310, which is used for adsorption connection with the surface of the battery module.

[0117] In some embodiments, the adsorption unit 1310 can be configured as a suction cup, such as a vacuum suction cup, which uses negative pressure to adsorb onto the surface of the battery module. The adsorption site of the suction cup can be the top surface of the battery module, so that during the second stage of descent of the battery module, the suction cup will not interfere with the battery box located on the side of the battery module or the battery module already placed in the box.

[0118] The number of adsorption units 1310 can be one or more. Multiple adsorption units 1310 can be arranged at intervals to achieve a stable connection with the battery module.

[0119] By setting the connecting component 131 as the adsorption unit 1310, the convenience of connecting the adsorption unit 1310 to the battery module is improved, the damage of the adsorption unit 1310 to the outer surface of the battery module is reduced, and the interference between the adsorption unit 1310 and the battery box or the battery module already in the box is also reduced.

[0120] like Figure 1 and Figure 2 As shown, according to some embodiments of this application, the connecting assembly 131 further includes a pressing unit 1311, which is configured to move in the vertical direction F, and the lowest point of the pressing unit 1311 moving in the vertical direction F is lower than the lowest point of at least one adsorption unit 1310.

[0121] The top pressure unit 1311 can move relatively independently along the vertical direction F, thereby applying a force toward the bottom of the battery box to the battery module so that the battery module can fit as close as possible to the bottom of the battery box.

[0122] In some embodiments, the top pressing unit 1311 includes a pressure plate and a third driving member that drives the pressure plate to descend. The third driving member drives the pressure plate to move downward to a position below the lowest point of the adsorption unit 1310, thereby applying a force to the top surface of the battery module. The pressure plate can be a single piece or multiple pieces arranged at intervals, but the lower surfaces of the multiple pressure plates need to be kept on the same horizontal plane and rise and fall synchronously.

[0123] By setting up the top pressure unit 1311, after the adsorption unit 1310 drives the battery module to complete the second stage of descent, the adsorption unit 1310 separates from the battery module, and the top pressure unit 1311 is activated to press down on the battery module, so that the battery module and the bottom of the battery box can fit together as much as possible, that is, to assemble the battery module as well as possible, thereby improving the assembly accuracy of the battery module.

[0124] According to some embodiments of this application, the displacement range of the output end of the first lifting mechanism 12 along the vertical direction F is greater than the displacement range of the output end of the second lifting mechanism 13 along the vertical direction F.

[0125] The displacement range of the output end of the first lifting mechanism 12 along the vertical direction F is greater than the displacement range of the output end of the second lifting mechanism 13 along the vertical direction F. It can be understood that the stroke of the first lifting mechanism 12 is greater than the stroke of the second lifting mechanism 13, that is, the distance of the first descent is greater than the distance of the second descent.

[0126] During the first stage of descent, a relatively large distance needs to be covered. Therefore, the descent speed during this stage can be appropriately increased to allow the battery module to descend quickly to a position close to the battery housing, thereby improving the efficiency of the entire installation process. During the second stage of descent, the battery module gradually enters the battery housing. At this point, a second lifting mechanism is used for a slower descent to improve stability.

[0127] An embodiment of the second aspect of this application provides a battery production system, including the battery module loading device 1 as described in the above embodiment.

[0128] In some embodiments, a battery production system may be constructed using the battery module loading device 1 disclosed in the embodiments of this application for loading battery modules into the battery box during the battery production process.

[0129] The battery production system in this embodiment can have all the beneficial effects of the battery module boxing equipment 1 described above, which will not be repeated here.

[0130] like Figure 8 As shown, Figure 8 This is a flowchart illustrating a battery module loading method according to some embodiments of this application. A third aspect of this application provides a battery module loading method applied to the battery module loading device as described above. The method includes:

[0131] Step 810: Control the clamping mechanism to clamp the battery module and move it above the battery box.

[0132] Step 820: Control the first lifting mechanism to drive the clamping mechanism and battery module to adjust to the preset height position above the battery box.

[0133] Step 830: Control the clamping mechanism to release the battery module.

[0134] Step 840: Control the second lifting mechanism to lower the battery module into the battery housing.

[0135] The battery module loading method can be executed by the controller of the battery module loading equipment or by another computer device. The following description uses the controller of the battery module loading equipment as an example to illustrate the method steps of this embodiment.

[0136] In step 810, the controller can send a control command to the clamping mechanism, which clamps the battery module and moves it horizontally, thereby adjusting the relative position between the battery module and the battery box, so that the battery module is located directly above the insertion position in the battery box.

[0137] In step 820, the controller can issue a control command to the first drive component of the first lifting mechanism. The first drive component drives the shaft to simultaneously lower the clamping mechanism, the battery module, and the second lifting mechanism in the first stage, so that the battery module is closer to the battery box. The accuracy requirement in this stage is relatively low, and a higher descent speed can be used to improve the efficiency of loading into the box.

[0138] In step 830, some sensors can be used to detect the displacement of the first descent and send the detection results to the controller. The controller sends a control command to the clamping mechanism based on the detection results, and the clamping mechanism releases the clamp on the battery module.

[0139] In step 840, the controller can send a second lifting control command to the second drive unit of the second lifting mechanism, and the output end of the second drive unit can drive the battery module to descend in the second stage until the battery module descends to the bottom of the battery box.

[0140] By controlling the clamping mechanism, the first lifting mechanism, and the second lifting mechanism, the battery module can be lowered into the box in two stages, reducing interference during the battery module insertion process and improving the efficiency of battery module insertion.

[0141] In some embodiments, step 820 includes: obtaining the vertical movement distance of the shaft; and in response to the vertical movement distance of the shaft and the servo encoder value of the first drive member being greater than a preset threshold, driving the braking component to restrict the movement of the shaft in the vertical direction.

[0142] The vertical movement distance of the shaft can be obtained by detecting it with a displacement detection component, or by reading data detected by the displacement detection component and stored in a storage medium. The displacement detection component can be any displacement sensor, such as a photoelectric sensor, an infrared sensor, or a vision sensor. In some embodiments, the vertical movement distance of the shaft can be detected using a magnetic scale.

[0143] If the difference between the vertical movement distance of the shaft and the servo encoder value of the first drive unit is greater than a preset threshold, it indicates that the movement distance of the shaft and the servo encoder value do not match, and the shaft is prone to rapid vertical descent. In other words, the descent of the shaft is not fully controlled by the first drive unit, which leads to a safety hazard of accidental fall of the battery module.

[0144] By comparing the vertical movement distance of the shaft with the detection result of the servo encoder of the first drive component, it is possible to determine whether there is any abnormality in the shaft during the first descent, thereby reducing the risk of uncontrolled descent of the shaft due to failure of the first drive component and improving the reliability of the operation.

[0145] In some embodiments, step 820 further includes: obtaining the vertical movement distance of the shaft; controlling the balancing cylinder to adjust the pressure inside the cylinder according to the detection result; the balancing cylinder includes a cylinder body and a piston rod that are movably connected, one of the cylinder body and the piston rod being fixedly connected to the shaft body, and the other of the cylinder body and the piston rod being fixedly connected to the bracket.

[0146] In some embodiments, the vertical movement distance of the shaft can be detected by a magnetic scale.

[0147] By adjusting the pressure inside the balancing cylinder, the shaft can achieve dynamic gravity balance during the first stage of lifting and lowering, thereby improving the stability and reliability of the battery module.

[0148] In some embodiments, before step 830, the method further includes: controlling the adsorption unit of the second lifting mechanism to adsorb onto the top surface of the battery module.

[0149] In some embodiments, the adsorption unit can be configured as a suction cup, which uses negative pressure to adsorb the battery module onto the suction cup. Since the adsorption area of ​​the suction cup can be the top surface of the battery module, the suction cup will not interfere with the battery box located on the side of the battery module or the battery module already placed in the box during the second stage of descent of the battery module.

[0150] By connecting the adsorption unit to the battery module, the connection and separation between the second lifting mechanism and the battery module can be achieved more easily, which is conducive to realizing automated control and improving the electrification level and work efficiency of the box loading operation.

[0151] In some embodiments, after step 840, the method further includes: releasing the adsorption connection between the adsorption unit and the battery module, and controlling the top pressing unit of the second lifting mechanism to move downward in the vertical direction to apply a force toward the bottom of the box to the battery module.

[0152] In some embodiments, the top pressing unit includes a pressure plate and a third driving member for driving the pressure plate to descend. After the second descent is completed, the controller can send a command to the adsorption unit of the second lifting mechanism to release the adsorption connection, and at the same time send a control command to the third driving member to drive the pressure plate to press down and apply force to the top surface of the battery module.

[0153] By applying force to the battery module through the top pressure unit, the battery module and the bottom of the battery box can fit together as closely as possible, thus assembling the battery module into place as much as possible and improving the quality of battery module assembly.

[0154] The following is combined Figures 1 to 8 The embodiments of this application will be described in further detail.

[0155] The battery module loading device 1 includes: a clamping mechanism 10, a bracket 11, a first lifting mechanism 12, a second lifting mechanism 13, a displacement detection component 14, a balance cylinder 15, and a braking component 16.

[0156] The clamping mechanism 10 is used to clamp the battery module. The first lifting mechanism 12 includes a first driving member 120 connected to the bracket 11 and a shaft 121 pulsatorically connected to the first driving member 120. The shaft 121 is connected to the clamping mechanism 10 and moves vertically in the direction F together with the clamping mechanism under the drive of the first driving member 120 to achieve the first stage of descent of the battery module. The second lifting mechanism 13 is fixedly connected to the shaft 121. A portion of the second lifting mechanism 13 is accommodated in a first receiving cavity at the second end of the shaft. The second lifting mechanism 13 includes a second driving member 130 and a connecting assembly 131 located at the output end of the second driving member 130. The second driving member 130 is fixedly connected to the shaft 121 and drives the connecting assembly 131 to move vertically. The connecting assembly 131 is used to connect to the battery module in a detachable manner.

[0157] The second lifting mechanism 13 is configured to drive the battery module to move in the vertical direction F independently of the first lifting mechanism 12, so as to realize the second stage of descent of the battery module. During the second stage of descent, the clamping mechanism 10 releases the battery module, and the adsorption unit 1310 of the second lifting mechanism 13 adsorbs the top surface of the battery module.

[0158] The displacement detection component 14 is configured as a magnetic scale. The first drive component 120 is connected to the side of the first end of the shaft 121. The cylinder body of the balance cylinder 15 is fixed inside the first end of the shaft 121. The axis of the piston rod coincides with the axis of the shaft 121. The piston rod is connected to the center of the top of the bracket 11, so that the shaft 121 is subjected to relatively balanced force.

[0159] The braking assembly 16 includes a plurality of toothed grooves 160 connected to the outer surface of the shaft 121 and spaced apart in the vertical direction F, a braking element 161 fixedly connected to the bracket 11, an insertion hole provided on the outer surface of the shaft 121, and a pin 162 movably connected to the bracket 11. Braking of the shaft 121 is achieved by inserting the braking element 161 into the toothed grooves 160 or by inserting the pin 162 into the insertion hole.

[0160] After the battery module completes the second stage of descent, the adsorption unit 1310 separates from the battery module, and the top pressing unit 1311 of the second lifting mechanism 13 further presses down on the battery module, so that the battery module fits as closely as possible to the bottom of the battery box, thereby completing the insertion of the battery module into the box.

[0161] In some embodiments, the battery module loading device 1 may further include a controller, which is signal-connected to the clamping mechanism 10, the first drive member 120, the second drive member 130, the displacement detection component 14, the balance cylinder 15 and the braking component 16, respectively, to control the above components to perform the battery module loading method in the above embodiments.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery module boxing apparatus, characterized by, Comprise: A clamping mechanism; For clamping the battery module; A bracket; A first lifting mechanism comprising a first driving member connected with the bracket and a shaft body in transmission connection with the first driving member, the shaft body being connected with the clamping mechanism and moving together with the clamping mechanism along the vertical direction under the driving of the first driving member; A second lifting mechanism, the second lifting mechanism being fixedly connected with the shaft body, and being configured to drive the battery module to move along the vertical direction independently of the first lifting mechanism.

2. The battery module in-box apparatus according to claim 1, wherein The shaft body comprises a first end and a second end opposite along the vertical direction, the first end being in transmission connection with the first driving member, and the second end having a first accommodating cavity extending along the vertical direction, at least part of the second lifting mechanism being accommodated in the first accommodating cavity.

3. The battery module in-box apparatus according to claim 1, wherein The bracket has a second accommodating cavity extending along the vertical direction, the first end of the shaft body being arranged in the second accommodating cavity and being in transmission connection with the first driving member.

4. The battery module in-box apparatus according to claim 3, characterized by, An outer surface of the shaft body is provided with at least one guide structure extending along the vertical direction, the shaft body being in sliding connection with an inner surface of the bracket defining the second accommodating cavity through the guide structure.

5. The battery module in-box apparatus according to any one of claims 1-4, wherein, The battery module boxing equipment further comprises a displacement detection assembly for detecting a distance of the shaft body of the first lifting mechanism moving along the vertical direction.

6. The battery module in-box apparatus according to claim 5, wherein The displacement detection assembly is configured as a magnetic grating ruler; The magnetic grating ruler comprises a magnetic ruler and a reading head for reading a magnetized signal on the magnetic ruler, the reading head being fixed on the shaft body, and the magnetic ruler being fixed on the bracket.

7. The battery module in-box apparatus according to any one of claims 1-6, wherein, Further comprise: A balance cylinder comprising a cylinder body and a piston rod in movable connection, one of the cylinder body and the piston rod being fixedly connected with the shaft body, and the other of the cylinder body and the piston rod being fixedly connected with the bracket; The balance cylinder is configured to adjust a pressure in the cylinder body according to a distance of the shaft body moving along the vertical direction.

8. The battery module in-box apparatus according to any one of claims 1-7, wherein, Further comprise: A brake assembly; The brake assembly is used to limit the movement of the shaft body along the vertical direction.

9. The battery module in-box apparatus of claim 8, wherein, The brake assembly comprises a plurality of tooth grooves connected to an outer surface of the shaft body and arranged along the vertical direction; and A brake element fixedly connected with the bracket, an output end of the brake element being configured to move between a first position located in the tooth groove and a second position completely away from the tooth groove.

10. The battery module in-box apparatus according to claim 8 or 9, characterized by, The brake element is further configured to drive the output end of the brake element to move to the first position in response to a condition that a difference between a distance of the shaft body moving along the vertical direction and a servo encoder value of the first driving member is greater than a preset threshold value.

11. The battery module in-box apparatus according to any one of claims 8-10, wherein, The brake assembly further comprises a socket arranged on the outer surface of the shaft body; and A latch movably connected with the bracket, the latch being configured to move between a third position located in the socket and a fourth position completely away from the socket.

12. The battery module in-box apparatus according to any one of claims 1-11, wherein, The second lifting mechanism comprises a second driving member and a connecting assembly at an output end of the second driving member, the second driving member being fixedly connected with the shaft body and driving the connecting assembly to move along the vertical direction, and the connecting assembly being used to connect with the battery module in a separable manner.

13. The battery module in-box apparatus of claim 11, wherein, The connecting assembly comprises at least one adsorption unit for adsorptive connection with the surface of the battery module.

14. The battery module in-box apparatus of claim 13, wherein, The connecting assembly further comprises a top pressing unit configured to move in a vertical direction, and the lowest point of the top pressing unit in the vertical direction is lower than the lowest point of the at least one adsorption unit.

15. The battery module boxing apparatus according to any one of claims 1-14, wherein, The displacement range of the output end of the first lifting mechanism in the vertical direction is greater than the displacement range of the output end of the second lifting mechanism in the vertical direction.

16. A battery production system characterized by comprising: The battery module boxing device comprises the battery module boxing device according to any one of claims 1-15.

17. A battery module boxing method applied to the battery module boxing apparatus according to any one of claims 1 to 15, characterized by, The battery module boxing device comprises: controlling the clamping mechanism to clamp the battery module and move above the battery box; controlling the first lifting mechanism to drive the clamping mechanism and the battery module to adjust to a preset height position above the battery box; controlling the clamping mechanism to release the battery module; controlling the second lifting mechanism to drive the battery module to descend to the bottom of the battery box.

18. The battery module-in-a-box method of claim 17, wherein, The control of the first lifting mechanism to drive the clamping mechanism and the battery module to adjust to a preset height position above the battery box comprises: obtaining the movement distance of the shaft body in the vertical direction; in response to the difference between the movement distance of the shaft body in the vertical direction and the servo encoder value of the first driving member being greater than a preset threshold, controlling the brake assembly to limit the movement of the shaft body in the vertical direction.

19. The battery module-in-a-box method of claim 17, wherein, The control of the first lifting mechanism to drive the clamping mechanism and the battery module to adjust to a preset height position above the battery box further comprises: obtaining the movement distance of the shaft body in the vertical direction; controlling the balance cylinder to adjust the pressure in the cylinder body according to the detection result, the balance cylinder comprising a cylinder body and a piston rod movably connected, one of the cylinder body and the piston rod being fixedly connected with the shaft body, and the other of the cylinder body and the piston rod being fixedly connected with a support.

20. The battery module-in-a-box method of claim 17, wherein, Before the control of the clamping mechanism to release the battery module, the method further comprises: controlling the adsorption unit of the second lifting mechanism to adsorptively connect to the top surface of the battery module.

21. The battery module-in-a-box method of claim 20, wherein, After the control of the second lifting mechanism to drive the battery module to descend to the bottom of the battery box, the method comprises: releasing the adsorptive connection between the adsorption unit and the battery module; controlling the top pressing unit of the second lifting mechanism to move downward in the vertical direction to exert a force on the battery module towards the bottom of the battery box.

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