Battery extrusion apparatus

Abstract

This application discloses a battery extrusion device, relating to the field of battery technology. The battery extrusion device includes a mounting platform, extrusion components, and a driving device. The mounting platform is configured to hold a battery device. The battery device includes a housing and at least two battery cell groups partially disposed within the housing, the at least two battery cell groups arranged along a first direction. The extrusion components are provided in at least two sets, the at least two sets of extrusion components are arranged opposite each other along a second direction, and at least one extrusion component is slidably disposed on the mounting platform. Each extrusion component includes at least two extrusion heads arranged along the first direction, the first direction and the second direction forming an angle. The driving device is drively connected to at least one extrusion component and drives the at least two extrusion heads arranged along the first direction to move in the second direction. The technical solution of this application can achieve the effect of extruding battery cell groups of old battery devices to an initial length.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery extrusion device. Background Technology

[0002] Under the coupled conditions of long-term charging, discharging, and vibration, the internal structure of individual battery cells expands and deforms, resulting in an increasingly longer battery cell assembly. This makes the steel strip surrounding the battery cell assembly prone to breakage, which can easily lead to a decline in battery performance. Therefore, the steel strip needs to be replaced promptly when problems occur. However, traditional extrusion fixtures can only extrude multiple new battery cells; currently, there is no equipment available for extruding multiple old battery cell assemblies bonded to the casing to their initial length. Utility Model Content

[0003] The main objective of this application is to propose a battery extrusion device designed to improve the problem of not being able to extrude multiple old battery cells bonded to the casing to their initial length.

[0004] To achieve the above objectives, the battery extrusion equipment proposed in this application includes an installation platform, extrusion components, and a drive device. The installation platform is configured to hold a battery device. The battery device includes a housing and at least two battery cell groups partially disposed in the housing, with the at least two battery cell groups arranged along a first direction. The extrusion components are provided in at least two sets, with the at least two sets of extrusion components arranged opposite each other along a second direction, and at least one extrusion component slidably disposed on the installation platform. Each extrusion component includes at least two extrusion heads arranged along the first direction, with the first direction and the second direction forming an angle. The drive device is drively connected to at least one of the extrusion components and drives the at least two extrusion heads arranged along the first direction to move in the second direction.

[0005] The technical solution of this application places the battery device on the installation platform, and the extrusion assembly includes at least two extrusion heads arranged along the first direction. The at least two extrusion heads can simultaneously extrude at least two battery cell groups, which is suitable for situations where at least two battery cell groups in the old battery device are stuck to the box and are difficult to remove, so as to achieve the effect of extruding the battery cell groups of the old battery device to the initial length.

[0006] In addition, by setting two extrusion components, at least one of which is slidably mounted on the mounting platform, and the driving device is connected to at least one extrusion component and drives at least two extrusion heads arranged in the first direction to move in the second direction, the driving device can automatically achieve the driving effect of the extrusion components, thereby achieving the effect of extruding the battery cell pack located between the two extrusion components in the second direction.

[0007] In one embodiment of this application, the battery extrusion device further includes an adapter plate, which is independent of the extrusion head; the battery cell assembly includes an end plate, and the adapter plate is configured to be clamped between the extrusion head and the end plate; in the direction perpendicular to the mounting platform, the size of the adapter plate is larger than the size of the extrusion head.

[0008] This design results in a larger contact area between the adapter plate and the end plate, thereby reducing the pressure exerted by the adapter plate on the end plate during the extrusion process, and thus reducing the risk of damage to the end plate and the battery cells.

[0009] In one embodiment of this application, the end plate is provided with a rib, and the adapter plate is provided with a groove on the side opposite to the extrusion head, the groove being configured to allow the rib to be inserted.

[0010] This design further increases the contact area between the end plate and the adapter plate, thereby further reducing the risk of deformation of the end plate due to the adapter plate's resistance.

[0011] In one embodiment of this application, the end plate is provided with a positioning hole, and the adapter plate is provided with a positioning pin on the side opposite to the extrusion head, the positioning pin being configured to engage with the positioning hole.

[0012] This design allows for good positioning of the adapter plate and end plate during installation by inserting the positioning pin into the positioning hole, ensuring a more accurate installation position of the adapter plate and reducing the risk of the end plate deforming due to the holding force of the extrusion head caused by the adapter plate deviating from the end plate.

[0013] In one embodiment of this application, a gap is provided between the extrusion head and the mounting platform, and the extrusion head is configured to abut against one end of the adapter plate away from the mounting platform.

[0014] Understandably, older battery packs also include a housing, comprising a detachably connected first housing and a second housing, with at least two battery cell groups mounted on the first housing. The first housing is placed on a mounting platform, and in the direction perpendicular to the mounting platform, portions of at least two battery cell groups are located outside the first housing. When the adapter plate mates with the end plates of the battery cell groups, a portion of the adapter plate can be located inside the first housing, and another portion outside. By providing a gap between the extrusion head and the mounting platform, and by pressing against the end of the adapter plate away from the mounting platform, the extrusion head presses against the area of ​​the adapter plate located outside the first housing. With this configuration, when the extrusion head presses against the adapter plate, the adapter plate will not compress the housing, thus achieving a lower pressure on the end plate and reducing its deformation when it is pressed; it also avoids the risk of deformation caused by direct extrusion of the housing by the extrusion head.

[0015] In one embodiment of this application, the adapter board includes:

[0016] Adapter body, the adapter body being configured to abut against the extrusion head; and

[0017] A buffer layer is provided on the side of the adapter body opposite to the extrusion head.

[0018] With this configuration, the buffer layer can directly contact the end plate, thereby further reducing the risk of deformation caused by the extrusion head against the end plate and ensuring more stable performance of the battery cell.

[0019] In one embodiment of this application, the extrusion assembly further includes a connecting plate, which is slidably disposed on the mounting platform. At least two extrusion heads are connected to the connecting plate, and the driving device is drivenly connected to the connecting plate.

[0020] This configuration enables the simultaneous compression of at least two battery cell groups, thereby improving compression efficiency. It also allows at least two battery cell groups to be compressed to their initial length simultaneously, and ensures that at least two battery cell groups are aligned in the first direction.

[0021] In one embodiment of this application, the driving device includes a first driving component and a second driving component, wherein the first driving component and the second driving component are respectively connected to the two extrusion components in a driving connection.

[0022] This configuration allows for the simultaneous movement of both extrusion components, bringing them closer together to improve extrusion efficiency; or, conversely, for the simultaneous movement of both extrusion components, moving them further apart to improve the efficiency of removing the battery device from the mounting platform. Of course, users can also flexibly select one of the nearest drive components to drive the extrusion head based on the actual operating location, increasing the flexibility of the drive unit.

[0023] In one embodiment of this application, the first drive assembly includes a motor and a transmission rod, one end of which is connected to the motor and the other end of which is connected to the connecting plate.

[0024] This configuration enables the first drive component to automatically drive the connecting plate, thereby achieving the effect of automatically driving the extrusion head.

[0025] In one embodiment of this application, the second drive assembly includes a bracket, a lead screw, and a handle, and the connecting plate is provided with a threaded hole; the lead screw is rotatably mounted on the bracket, one end of the lead screw is connected to the handle, and the other end is threaded into the threaded hole and connected to the connecting plate.

[0026] With this setup, users can manually rotate the handle to drive the connecting plate and the extrusion head connected to the connecting plate, thus enabling the battery extrusion device to extrude battery cells to their initial length even when the device is powered off.

[0027] In one embodiment of this application, the installation platform is further provided with limiting members on opposite sides in the first direction.

[0028] This configuration allows for the limiting of the battery device in the first direction, reducing the risk of slippage in the first direction during the compression of the battery cell pack.

[0029] In one embodiment of this application, the mounting platform is further provided with a slide rail, the slide rail extends along the second direction, and the extrusion component is slidably disposed on the slide rail.

[0030] This configuration provides a good guiding effect for the sliding process of the extrusion component along the second direction, and also reduces the friction force when the extrusion component slides. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0033] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0034] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0035] Figure 4 This is a three-dimensional structural diagram of the battery extrusion device according to some embodiments of this application;

[0036] Figure 5 This is a schematic diagram of the structure of the battery extrusion device according to some embodiments of this application, showing the extrusion head and adapter plate extruding the end plate of the battery device under extrusion conditions;

[0037] Figure 6 This is a schematic diagram of the structure of the adapter board according to some embodiments of this application;

[0038] Figure 7This is an exploded structural diagram of an adapter plate according to some embodiments of this application.

[0039] Explanation of icon numbers:

[0040] 1000, vehicles;

[0041] 100. Battery assembly; 200. Controller; 300. Motor;

[0042] 10. Box body; 11. First shell; 12. Second shell;

[0043] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Cell assembly; 23a. Tab;

[0044] 30. Battery cell assembly; 31. End plate;

[0045] 400. Battery extrusion equipment; 410. Mounting platform; 420. Extrusion assembly; 421. Connecting plate; 422. Extrusion head; 430. Drive unit; 431. First drive assembly; 4311. Motor; 4312. Transmission rod; 432. Second drive assembly; 4321. Bracket; 4322. Lead screw; 4323. Handle; 440. Adapter plate; 441. Adapter body; 4411. Groove; 4412. Positioning pin; 442. Buffer layer; 450. Limiting component; 460. Slide rail;

[0046] X, first direction;

[0047] Y, the second direction.

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0052] This application provides a battery extrusion device for extruding battery cells within an existing battery assembly. The battery assembly serves as a power source for an electrical device, which can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0053] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0054] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is disposed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be configured to supply power to the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300; for example, the battery device 100 is configured to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0055] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0056] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 20, the battery cell 20 being housed within the housing 10. The housing 10 is configured to provide a receiving space for the battery cell 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first housing 11 and a second housing 12, the first housing 11 and the second housing 12 overlapping each other, the first housing 11 and the second housing 12 jointly defining a receiving space for accommodating the battery cell 20. The second housing 12 may be a hollow structure with one open end, and the first housing 11 may be a plate-like structure, the first housing 11 covering the open side of the second housing 12 so that the first housing 11 and the second housing 12 jointly define the receiving space; the first housing 11 and the second housing 12 may also both be hollow structures with one open side, the open side of the first housing 11 covering the open side of the second housing 12. Of course, the housing 10 formed by the first housing 11 and the second housing 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0057] In the battery device 100, there can be multiple battery cells 20. These multiple battery cells 20 can be connected in series, parallel, or in a hybrid configuration via electrical connection components. A hybrid configuration means that multiple battery cells 20 can be connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a hybrid configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a hybrid configuration to form a battery cell group 30, and then the multiple battery cell groups 30 are connected in series, parallel, or in a hybrid configuration via electrical connection components to form a whole, which is then housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component to achieve electrical connection between the multiple battery cells 20.

[0058] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0059] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit constituting the battery device 100. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, a cell assembly 23, and other functional components.

[0060] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure or impact, allowing battery cell 20 to have higher structural strength. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be configured to be electrically connected to cell assembly 23 to output or input electrical energy from battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element may be configured to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. Exemplarily, the insulating element may be made of plastic, rubber, etc.

[0061] The housing 22 is a component configured to cooperate with the end cap 21 to form the internal environment of the battery cell 20, wherein the formed internal environment can accommodate the cell assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the cell assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this embodiment does not impose any special limitations on this.

[0062] The cell assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more cell assemblies 23. The cell assembly 23 is mainly formed by winding or stacking positive and negative electrode plates, and typically a separator is provided between the positive and negative electrode plates. The portions of the positive and negative electrode plates containing active material constitute the main body of the cell assembly 23, while the portions of the positive and negative electrode plates without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals 21a to form a current loop.

[0063] like Figure 2 As shown, under the coupled conditions of long-term charging, discharging, and vibration, the internal structure of the battery cells 20 in the battery device 100 will expand and deform. The length of the battery cell group 30 in the direction of the battery cells 20 arrangement will increase, and the steel strip surrounding the battery cell group 30 is prone to breakage, which can easily lead to a decline in battery performance. Therefore, the steel strip needs to be replaced in time when problems occur. However, traditional extrusion fixtures can only extrude multiple new single battery cell groups 30. In the old battery device 100, multiple battery cell groups 30 are usually bonded inside the housing 10. If extrusion is performed on a single battery cell group 30, it is necessary to pry the battery cell group 30 out of the housing 10. It is understandable that due to the expansion, the old battery cells 20 are prone to irreversible damage such as cracking when the battery cell group 30 is pried out of the housing 10, which can easily lead to the scrapping of the battery device 100. Currently, there is no equipment for extruding multiple old battery cell groups 30 bonded inside the housing 10 to their initial length.

[0064] To address the issue of multiple old battery cells 30 bonded within the housing 10 failing to be compressed to their initial length, please refer to the following reference. Figure 2 , Figure 4 and Figure 5This application proposes a battery extrusion device 400, which includes a mounting platform 410, an extrusion assembly 420, and a drive device 430. The mounting platform 410 is configured to hold a battery device 100. The battery device 100 includes a housing 10 and at least two battery cell groups 30 partially disposed in the housing 10, with the at least two battery cell groups 30 arranged along a first direction X. The extrusion assembly 420 has at least two sets, with the at least two sets of extrusion assemblies 420 arranged opposite each other along a second direction Y, and at least one extrusion assembly 420 is slidably disposed on the mounting platform 410. Each extrusion assembly 420 includes at least two extrusion heads 422 arranged along the first direction X, with the first direction X and the second direction Y forming an angle. The drive device 430 is drively connected to at least one extrusion assembly 420 and drives the at least two extrusion heads 422 arranged along the first direction X to move in the second direction Y.

[0065] Mounting platform 410 refers to a platform configured to mount battery device 100, which can be an old battery device 100 or a new battery device 100. Mounting platform 410 can be circular, rectangular, or other shapes, as long as it can stably support battery device 100. Battery device 100 includes housing 10 and at least two battery cell groups 30 partially disposed in housing 10. At least two battery cell groups 30 are arranged along a first direction X, and each battery cell group 30 includes at least two battery cells 20 arranged along a second direction Y. For example, battery device 100 may include two, three, or more battery cell groups 30 arranged along the first direction X. When the battery device 100 is an older battery device 100, at least two battery cell groups 30 are bonded to the housing 10. A steel strip is also fitted around each battery cell group 30. At least two battery cells 20 within the same battery cell group 30 are arranged along a second direction Y. The steel strip is configured to bind the battery cells 20 within the same battery cell group 30 together to ensure more stable performance of the battery device 100. The first direction X can be a front-to-back direction, and the second direction Y can be a left-to-right direction; or the first direction X can be a left-to-right direction, and the second direction Y can be a front-to-back direction. When the battery device 100 is a new battery device 100, the battery cell groups 30 are not bonded to the housing 10, so only the battery cell groups 30 can be placed on the mounting platform 410. When the battery device 100 is an older battery device 100, the battery cell groups 30 are already bonded to the housing 10. Therefore, the battery device 100 placed on the mounting platform 410 includes the housing 10 and the battery cell groups 30 located within the housing 10. It is understood that the housing 10 includes a first housing 11 and a second housing 12, which are detachably connected to facilitate the installation or removal of the battery cell assembly 30 from the housing 10. Therefore, in order to compress the battery cell assembly 30, the mounting platform 410 can hold the battery cell assembly 30 and either the first housing 11 or the second housing 12 of the housing 10. For example, when the battery cell assembly 30 is bonded to the first housing 11, the mounting platform 410 holds both the battery cell assembly 30 and the first housing 11; when the battery cell assembly 30 is bonded to the second housing 12, the mounting platform 410 holds both the battery cell assembly 30 and the second housing 12.

[0066] The extrusion assembly 420 is an execution assembly configured to extrude the battery cell pack 30. At least two sets of extrusion assemblies 420 are arranged opposite each other along the second direction Y, allowing the battery device 100 to be placed between the two sets of extrusion assemblies 420. At least one extrusion assembly 420 is slidably disposed on the mounting platform 410, enabling it to extrude the battery cell pack 30 along the second direction Y, i.e., to extrude it in the expansion direction of the battery cell pack 30, thereby extruding the battery cell pack 30 to its initial length. Specifically, only one extrusion assembly 420 may be slidably disposed on the mounting platform 410, allowing it to move closer to or further away from the other extrusion assembly 420 as it slides along the second direction Y. Alternatively, both sets of extrusion assemblies 420, arranged opposite each other in the second direction Y, may be slidably disposed on the mounting platform 410, allowing them to move simultaneously to move closer to or further away from each other.

[0067] Each extrusion assembly 420 includes at least two extrusion heads 422 arranged along the first direction X. The extrusion heads 422 can be plate-shaped or block-shaped. Since at least two extrusion heads 422 in the same extrusion assembly 420 are arranged along the first direction X, the at least two extrusion heads 422 can extrude two sets of battery cell groups 30 respectively. This is applicable to situations where at least two sets of battery cell groups 30 in an old battery device 100 are bonded to the first housing 11 or the second housing 12. In this case, it is not necessary to remove the battery cell groups 30 from the housing 10. The part of the housing 10 that is not bonded to the battery cell group 30 can be directly removed. At this time, part of the battery cell group 30 is exposed. By extruding the at least two sets of battery cell groups 30 arranged along the first direction X with the at least two extrusion heads 422, it is applicable to scenarios where at least two sets of battery cell groups 30 are bonded together and it is impossible to pry out a single battery cell group 30 from the housing 10. That is, the old battery cell group 30 can be extruded to its initial length. Of course, when at least two extrusion heads 422 in the same extrusion assembly 420 are arranged in the first direction X, they can also extrude new battery cell groups 30, that is, at least two new battery cell groups 30 can be extruded at the same time, so as to facilitate the subsequent step of simultaneously attaching steel strips to the two battery cell groups 30.

[0068] The drive device 430 is a device for driving the extrusion head 422 to move in the second direction Y. The drive device 430 can be a linear motor, a lead screw and nut assembly, a connecting rod assembly, or a gear and rack assembly, etc. The drive device 430 can drive the extrusion head 422 of only one extrusion assembly 420 to move in the second direction Y, or it can drive the extrusion heads 422 of two extrusion assemblies 420 to move in the second direction Y.

[0069] The technical solution of this application places the battery device 100 on the mounting platform 410, and the extrusion assembly 420 includes at least two extrusion heads 422 arranged along the first direction X. The at least two extrusion heads 422 can simultaneously extrude at least two battery cell groups 30, which is suitable for situations where at least two battery cell groups 30 in the old battery device 100 are stuck inside the housing 10 and are difficult to remove, so as to achieve the effect of extruding the battery cell groups 30 of the old battery device 100 to the initial length.

[0070] In addition, by setting two extrusion components 420, with at least one extrusion component 420 slidably disposed on the mounting platform 410, and the driving device 430 being connected to at least one extrusion component 420 and driving at least two extrusion heads 422 arranged along the first direction X to move in the second direction Y, the driving device 430 can automatically achieve the driving effect of the extrusion component 420, thereby achieving the effect of extruding the battery cell group 30 disposed between the two extrusion components 420 in the second direction Y.

[0071] Please refer to the reference. Figure 2 , Figure 4 as well as Figure 5 In one embodiment of this application, the battery extrusion device 400 further includes an adapter plate 440, which is independent of the extrusion head 422; the battery cell pack 30 includes an end plate 31, and the adapter plate 440 is configured to be clamped between the extrusion head 422 and the end plate 31; in the direction of the vertical mounting platform 410, the size of the adapter plate 440 is larger than the size of the extrusion head 422.

[0072] The adapter plate 440 refers to the component that isolates and connects the extrusion head 422 to the end plate 31 in the battery device 100. The adapter plate 440 can be flat or have a shape adapted to the shape of the end plate 31. For example, when the end plate 31 has a recessed structure on the side away from the battery cell 20, the adapter plate 440 can have a protruding structure adapted to the recessed structure; when the end plate 31 has a protruding structure on the side away from the battery cell 20, the adapter plate 440 can have a recessed structure adapted to the protruding structure.

[0073] By making the adapter plate 440 and the extrusion head 422 independent of each other, the adapter plate 440 can be placed at the end plate 31 before the extrusion head 422 extrudes the battery cell group 30 in the battery device 100. This is suitable for scenarios where the battery device 100 on the mounting platform 410 has a partial housing 10. In this case, the adapter plate 440 can be further placed inside the housing 10, thereby achieving the flexibility of the adapter plate 440 installation. By clamping the adapter plate 440 between the extrusion head 422 and the end plate 31, and with the size of the adapter plate 440 being larger than that of the extrusion head 422 in the direction perpendicular to the mounting platform 410, the extrusion head 422 directly applies extrusion force to the adapter plate 440, thereby indirectly achieving the effect of extruding the end plate 31 and the entire battery cell assembly 30, without directly supporting the end plate 31. This reduces the risk of deformation of the end plate 31 when the extrusion head 422 is a rod-shaped or small-area block. Furthermore, the larger contact area between the adapter plate 440 and the end plate 31 reduces the pressure exerted by the adapter plate 440 on the end plate 31 during the extrusion process, thereby reducing the risk of damage to the end plate 31 and the battery cell 20.

[0074] Please refer to the reference. Figure 2 , Figure 4 , Figure 5 as well as Figure 6 In one embodiment of this application, the end plate 31 is provided with a rib, and the adapter plate 440 is provided with a groove 4411 on the side opposite to the extrusion head 422. The groove 4411 is configured to allow the rib to be inserted.

[0075] The raised rib can be a long strip or a block, and its shape can be flexibly set according to actual needs. The presence of raised ribs on the end plate 31 enhances its strength. It is understood that in order for the raised rib to fit into the groove 4411 on the adapter plate 440, the raised rib can be located on the side of the end plate 31 facing the adapter plate 440, that is, on the side of the end plate 31 away from the battery cell 20.

[0076] By providing a groove 4411 on the side of the adapter plate 440 away from the extrusion head 422, and by allowing the protruding rib to be inserted into the groove 4411, the user can first place the adapter plate 440 close to the end plate 31, and allow the protruding rib of the end plate 31 to be inserted into the groove 4411 of the adapter plate 440, thereby achieving the effect of pre-installing the adapter plate 440 on the end plate 31. This can be applied to situations where part of the box 10 installed on the installation platform 410 covers part of the end plate 31. Specifically, the adapter plate 440 can be first placed inside the portion of the housing 10 that shields the end plate 31, and then the adapter plate 440 can be snapped onto the end plate 31. This improves the stability of the adapter plate 440 installation, so that when the pressing head 422 is pressing against the part of the adapter plate 440 that protrudes from the housing 10, it will not affect the housing 10. Moreover, the adapter plate 440 evenly distributes the pressing force across its entire surface, thereby reducing the pressure of the adapter plate 440 on the end plate 31 and thus reducing the risk of deformation of the end plate 31. In addition, by providing ribs on the end plate 31 and having grooves 4411 that fit the ribs, the contact area between the end plate 31 and the adapter plate 440 is increased, thereby further reducing the risk of deformation of the end plate 31 by the adapter plate 440.

[0077] Please refer to the reference. Figure 2 , Figure 4 , Figure 5 as well as Figure 6 In one embodiment of this application, the end plate 31 is provided with a positioning hole, and the adapter plate 440 is provided with a positioning pin 4412 on the side opposite to the extrusion head 422. The positioning pin 4412 is configured to be inserted into the positioning hole.

[0078] The positioning hole on the end plate 31 can be circular, rectangular, or other shapes, and the positioning pin 4412 can be cylindrical or prismatic, etc. It is understood that in order for the positioning hole to be compatible with the positioning pin 4412 on the adapter plate 440, the opening of the positioning hole must at least face the adapter plate 440.

[0079] By providing a positioning hole on the end plate 31, and a positioning pin 4412 on the side of the adapter plate 440 away from the extrusion head 422, and the positioning pin 4412 being configured to be inserted into the positioning hole, the adapter plate 440 and the end plate 31 can achieve a good positioning effect by inserting the positioning pin 4412 into the positioning hole when they are installed. This ensures that the installation position of the adapter plate 440 is more accurate, thereby reducing the risk that the adapter plate 440 will deviate from the end plate 31 and cause the end plate 31 to deform due to the holding force of the extrusion head 422.

[0080] Please refer to the reference. Figure 2 , Figure 4 , Figure 5 as well as Figure 6In one embodiment of this application, a gap is provided between the extrusion head 422 and the mounting platform 410, and it is configured to abut against the end of the adapter plate 440 away from the mounting platform 410.

[0081] It is understood that the battery device 100 also includes a housing 10, which includes a detachably connected first housing 11 and a second housing 12. The first housing 11 and the second housing 12 together define a receiving space for accommodating the battery cell 20. The second housing 12 can be a hollow structure with one end open, and the first housing 11 can be a plate-like structure. The first housing 11 covers the open side of the second housing 12 so that the first housing 11 and the second housing 12 together define the receiving space. Alternatively, the first housing 11 and the second housing 12 can both be hollow structures with one side open, and the open side of the first housing 11 covers the open side of the second housing 12. Of course, the housing 10 formed by the first housing 11 and the second housing 12 can be of various shapes, such as a cylinder, a cuboid, etc. For example, at least two battery cell groups 30 are mounted on a first housing 11, which is a hollow structure with an opening on one side. Before the battery cell groups 30 are squeezed, the first housing 11 and the battery cell groups 30 located inside the first housing 11 can be placed on a mounting platform 410, with the battery cell groups 30 still located inside the first housing 11. The second housing 12 is not covered by the first housing 11 and is not placed on the mounting platform 410. In the direction perpendicular to the mounting platform 410, parts of at least two battery cell groups 30 are located outside the first housing 11. At this time, part of the adapter plate 440 mounted on the end plate 31 of the battery cell group 30 can be located inside the first housing 11, and the other part can be located outside the first housing 11, thereby facilitating the provision of an area for the extrusion head 422 to hold.

[0082] By providing a gap between the extrusion head 422 and the mounting platform 410, and by configuring it to abut against the end of the adapter plate 440 away from the mounting platform 410, the extrusion head 422 can abut against the area of ​​the adapter plate 440 located outside the first housing 11. Understandably, since the extrusion head 422 can only support the area of ​​the end plate 31 located outside the first housing 11, the supporting area of ​​the extrusion head 422 is relatively small. However, in this embodiment, by setting an adapter plate 440, which is located on the side of the end plate 31 away from the battery cell 20, and in the direction of the vertical mounting platform 410, at least two battery cell groups 30 are partially located outside the first housing 11, part of the adapter plate 440 is located inside the first housing 11, and another part is located outside the first housing 11, the contact area between the adapter plate 440 and the end plate 31 is increased. On the other hand, when the extrusion head 422 extrudes the adapter plate 440, the adapter plate 440 will not extrude the housing 10, thereby achieving the effect that the pressure on the end plate 31 is small and it is not easy to deform when the end plate 31 is extruded; it also avoids the risk of the adapter plate 440 extruding and deforming the housing 10 when the extrusion head 422 extrudes the adapter plate 440.

[0083] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, the adapter plate 440 includes an adapter body 441 and a buffer layer 442. The adapter body 441 is configured to abut against the extrusion head 422. The buffer layer 442 is disposed on the side of the adapter body 441 opposite to the extrusion head 422.

[0084] The adapter body 441 is the main component configured to withstand the pressure of the extrusion head 422, i.e., the component configured to abut against the extrusion head 422. The rigidity of the adapter body 441 is greater than the strength of the buffer layer 442, its function being to reduce the risk of deformation of the adapter plate 440, thereby reducing the risk of deformation of the end plate 31 by the extrusion head 422. The adapter body 441 can be made of steel, aluminum, or other high-strength plastics. Based on the aforementioned adapter plate 440 including the groove 4411, positioning holes, and other structures, the adapter body 441 in this embodiment can also have the groove 4411, positioning holes, and other structures.

[0085] The buffer layer 442 refers to a single elastic sheet or plate structure, or multiple independent elastic sheet or plate structures. The buffer layer 442 is sandwiched on the side of the adapter body 441 opposite to the extrusion head 422, which further reduces the holding force of the adapter plate 440 against the end plate 31, thereby reducing the risk of deformation of the adapter plate 440 against the end plate 31. It should be noted that, in addition to having a certain degree of elasticity, the buffer layer 442 also needs to be made of materials with insulating properties, such as rubber or silicone, to reduce the risk of short circuits caused by electrical connection between the battery cell assembly 30 and the adapter plate 440.

[0086] By including an adapter body 441 and a buffer layer 442 in the adapter plate 440, with the adapter body 441 abutting against the extrusion head 422 and the buffer layer 442 disposed on the side of the adapter body 441 away from the extrusion head 422, the buffer layer 442 can directly contact the end plate 31, thereby further reducing the risk of deformation of the end plate 31 by the extrusion head 422 and ensuring more stable performance of the battery cell 20.

[0087] Of course, in other examples, in order to further reduce the risk of deformation of the end plate 31, the adapter plate 440 can be made of a material with a certain degree of elasticity, such as rubber or silicone.

[0088] like Figure 4 As shown, in one embodiment of this application, the extrusion assembly 420 further includes a connecting plate 421, which is slidably disposed on the mounting platform 410. At least two extrusion heads 422 are connected to the connecting plate 421, and the driving device 430 is connected to the connecting plate 421 in a transmission manner.

[0089] The connecting plate 421 refers to a component configured to connect at least two extrusion heads 422 together. The connecting plate 421 can be made of metal or plastic, etc.

[0090] By sliding the connecting plate 421 onto the mounting platform 410, with at least two extrusion heads 422 connected to the connecting plate 421 and the driving device 430 connected to the connecting plate 421, the driving device 430 can drive the connecting plate 421 to slide along the mounting platform 410 while simultaneously driving the at least two extrusion heads 422 to move synchronously. This achieves the effect of synchronously extruding at least two battery cell groups 30, thereby improving the extrusion efficiency. It also ensures that at least two battery cell groups 30 can be extruded to their initial length simultaneously and that at least two battery cell groups 30 can be aligned in the first direction X.

[0091] like Figure 4 As shown, in one embodiment of this application, the driving device 430 includes a first driving component 431 and a second driving component 432, which are respectively connected to two extrusion components 420 in a transmission manner.

[0092] The first drive assembly 431 may have the same structure as the second drive assembly 432, or they may be different. For example, both the first drive assembly 431 and the second drive assembly 432 may be linear motors, cylinders, or lead screw assemblies, or one of the first drive assembly 431 and the second drive assembly 432 may be a linear motor and the other a lead screw assembly; or one of the first drive assembly 431 and the second drive assembly 432 may be a linear motor and the other a cylinder, etc. It should be noted that since these drive methods are all conventionally understood in the art, their operating mechanisms and structures will not be described in detail.

[0093] By connecting the first drive assembly 431 and the second drive assembly 432 to the two extrusion assemblies 420 respectively, the two extrusion assemblies 420 can be driven to move simultaneously and move closer to each other to improve extrusion efficiency; or they can be driven to move simultaneously and move further apart to improve the efficiency of removing the battery device 100 from the mounting platform 410. Of course, by connecting the first drive assembly 431 and the second drive assembly 432 to the two extrusion assemblies 420 respectively, the user can also flexibly select one of the nearby drive assemblies to drive the extrusion head 422 according to the actual operating position, thereby improving the flexibility of the drive device 430.

[0094] like Figure 4 As shown, in one embodiment of this application, the first drive assembly 431 includes a motor 4311 and a transmission rod 4312. One end of the transmission rod 4312 is connected to the motor 4311 for transmission, and the other end is connected to the connecting plate 421.

[0095] The motor 4311 can be a linear motor or a rotary motor. The transmission rod 4312 can be a single rod or multiple rods; that is, the transmission rod 4312 can be a coupling structure or a connecting rod assembly.

[0096] By including a motor 4311 and a transmission rod 4312 in the first drive assembly 431, with one end of the transmission rod 4312 connected to the motor 4311 and the other end connected to the connecting plate 421, the first drive assembly 431 can automatically drive the connecting plate 421, thereby achieving the effect of automatically driving the extrusion head 422 to move.

[0097] like Figure 4 As shown, in one embodiment of this application, the second drive assembly 432 includes a bracket 4321, a lead screw 4322, and a handle 4323. The connecting plate 421 is provided with a threaded hole. The lead screw 4322 is rotatably mounted on the bracket 4321. One end of the lead screw 4322 is connected to the handle 4323, and the other end is threaded into the threaded hole and connected to the connecting plate 421.

[0098] The bracket 4321 refers to a component configured to support the lead screw 4322. The bracket 4321 can be a plate-like body placed on the vertical mounting platform 410, with a through hole or semi-circular groove for the lead screw 4322 to pass through; or the bracket 4321 can include a tripod, with the lead screw 4322 supported on the tripod; or the bracket 4321 can include a tripod and a support block located at the top of the tripod, with a through hole or semi-circular groove for the lead screw 4322 to pass through. The bracket 4321 can be mounted on the mounting platform 410 or located outside the mounting platform 410.

[0099] The handle 4323 can be a rod-shaped body extending radially outward along the lead screw 4322, or a handwheel structure installed at the end of the lead screw 4322 away from the connecting plate 421. The handle 4323 and the lead screw 4322 can be connected by detachable connection methods such as threaded connection and snap-fit ​​connection, or they can be connected as a whole by welding.

[0100] With this configuration, the user can manually rotate the handle 4323 to drive the connecting plate 421 and the extrusion head 422 connected to the connecting plate 421 to move, so that the battery extrusion device 400 can still extrude the battery cell pack 30 to the initial length even when the device is powered off.

[0101] like Figure 4 As shown, in one embodiment of this application, the mounting platform 410 is further provided with limiting members 450 on opposite sides in the first direction X.

[0102] The limiting component 450 can be a limiting plate, a limiting block, or a limiting post, etc. On the same side of the mounting platform 410, there can be one, two, or more limiting components 450.

[0103] By providing limiting members 450 on opposite sides of the mounting platform 410 along the first direction X, the battery device 100 can be limited in the first direction X, reducing the risk of slippage in the first direction X during the extrusion of the battery cell pack 30, thereby improving the stability of the battery extrusion equipment 400 in extruding the battery cell pack 30.

[0104] like Figure 4 As shown, in one embodiment of this application, the installation platform 410 is further provided with a slide rail 460, which extends along the second direction Y, and the extrusion assembly 420 is slidably disposed on the slide rail 460.

[0105] By setting a slide rail 460 on the mounting platform 410, the slide rail 460 extends along the second direction Y, and the extrusion assembly 420 is slidably mounted on the slide rail 460, on the one hand, it provides a good guiding effect for the sliding process of the extrusion assembly 420 along the second direction Y, and on the other hand, it reduces the friction force when the extrusion assembly 420 slides, thereby reducing the energy consumption of the drive device 430.

[0106] The above are merely exemplary embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery extrusion device, characterized in that, include: An installation platform is configured to hold a battery device; the battery device includes a housing and at least two battery cell groups partially disposed in the housing, the at least two battery cell groups being arranged along a first direction. The extrusion assembly includes at least two sets of extrusion assemblies, which are arranged opposite to each other along a second direction, and at least one extrusion assembly is slidably disposed on the mounting platform; each extrusion assembly includes at least two extrusion heads arranged along a first direction, which is at an angle to the second direction. as well as A driving device is connected to at least one of the extrusion components and drives at least two extrusion heads arranged along the first direction to move in the second direction.

2. The battery extrusion equipment as described in claim 1, characterized in that, The battery extrusion equipment further includes an adapter plate, which is independent of the extrusion head; the battery cell assembly includes an end plate, and the adapter plate is configured to be clamped between the extrusion head and the end plate; in the direction perpendicular to the mounting platform, the size of the adapter plate is larger than the size of the extrusion head.

3. The battery extrusion equipment as described in claim 2, characterized in that, The end plate is provided with a protruding rib, and the adapter plate is provided with a groove on the side opposite to the extrusion head. The groove is configured to allow the protruding rib to be inserted.

4. The battery extrusion equipment as described in claim 2, characterized in that, The end plate is provided with a positioning hole, and the adapter plate is provided with a positioning pin on the side opposite to the extrusion head. The positioning pin is configured to be engaged in the positioning hole.

5. The battery extrusion equipment as described in claim 2, characterized in that, A gap is provided between the extrusion head and the mounting platform, and the head is configured to abut against the end of the adapter plate away from the mounting platform.

6. The battery extrusion equipment as described in claim 2, characterized in that, The adapter plate includes: Adapter body, the adapter body being configured to abut against the extrusion head; and A buffer layer is provided on the side of the adapter body opposite to the extrusion head.

7. The battery extrusion apparatus according to any one of claims 1 to 6, characterized in that, The extrusion assembly further includes a connecting plate, which is slidably disposed on the mounting platform. At least two extrusion heads are connected to the connecting plate, and the driving device is drivenly connected to the connecting plate.

8. The battery extrusion equipment as described in claim 7, characterized in that, The driving device includes a first driving component and a second driving component, which are respectively connected to the two extrusion components.

9. The battery extrusion equipment as described in claim 8, characterized in that, The first drive assembly includes a motor and a transmission rod, one end of which is connected to the motor and the other end of which is connected to the connecting plate; And / or, the second drive assembly includes a bracket, a lead screw, and a handle, and the connecting plate is provided with a threaded hole; the lead screw is rotatably mounted on the bracket, one end of the lead screw is connected to the handle, and the other end is threaded into the threaded hole and connected to the connecting plate.

10. The battery extrusion apparatus according to any one of claims 1 to 6, characterized in that, The installation platform is also provided with limiting components on opposite sides in the first direction; And / or, the mounting platform is further provided with a slide rail, the slide rail extending along the second direction, and the extrusion assembly is slidably disposed on the slide rail.

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