Battery cell housing method and battery cell housing apparatus

Abstract

The application belongs to the technical field of batteries, and discloses a cell casing method and a cell casing device. The cell casing method first places a battery shell on a first bearing mechanism, so that a first opening and a second opening of the battery shell are opposite along a first direction, then a clamping device of a traction mechanism enters the battery shell from the first opening, waits for the traction part to be opposite to the second opening and the cell and the battery shell to move relative to each other until the traction part contacts the clamping device, the clamping device clamps and fixes the traction part, the cell is pulled to move along the first direction by the traction mechanism, so that the traction part is close to the first opening, the casing of the cell is completed, and the assembly of the cell and the battery shell is realized. The cell casing method solves the problem of difficult cell casing without affecting the energy density of the battery itself.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a method and equipment for inserting battery cells into a casing. Background Technology

[0002] The cell insertion process refers to the process of placing the battery cell into the battery's steel casing. Current blade batteries face difficulties in cell insertion, and the reasons for this are as follows: 1. Because the length and width of the battery casing are slightly smaller than the length and width of the battery cell, and the edges of the casing opening are sharp, even a slight misalignment between the end of the cell and the casing opening can cause the casing edge to cut the cell; 2. Due to the relatively long length of the blade battery itself, prolonged direct pushing of the cell into the casing can easily cause cell deformation; 3. Due to energy density requirements, the blade battery itself is made relatively long, resulting in slow insertion and low production efficiency.

[0003] Therefore, there is an urgent need to provide a new method and equipment for inserting battery cells into the casing, so as to solve the above-mentioned technical problems in the prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a method and equipment for inserting battery cells into a casing, which solves the problem of difficulty in inserting battery cells into a casing without affecting the energy density of the battery itself.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The battery casing in the cell insertion method includes a first opening and a second opening arranged opposite each other along a first direction. The cell assembly is covered with an insulating film, and at least one side of the insulating film in the first direction is connected to a traction part. The cell insertion method specifically includes the following steps: placing the battery casing on a first support mechanism and arranging the first opening and the second opening of the battery casing opposite each other along the first direction; placing the cell assembly on a second support mechanism and arranging the traction part facing the second opening of the battery casing; controlling the relative movement of the clamping device of the traction mechanism and the battery casing, so that the clamping device of the traction mechanism enters the battery casing from the first opening; controlling the relative movement of the clamping device of the traction mechanism and the cell assembly in the first direction until the traction part is at the clamping device of the traction mechanism; controlling the clamping device of the traction mechanism to clamp the traction part; S4, controlling the clamping device of the traction mechanism and the cell assembly to move together in the first direction along the direction close to the first opening, so that the cell assembly enters the battery casing.

[0007] Optionally, controlling the relative movement of the clamping device of the traction mechanism and the battery housing includes: restricting the movement of the battery housing by the first bearing mechanism, controlling the clamping device of the traction mechanism and the first opening of the battery housing to be aligned, and controlling the clamping device of the traction mechanism to move towards the second opening of the battery housing.

[0008] Optionally, controlling the clamping device of the traction mechanism and the cell assembly to move relative to each other in a first direction until the traction part is located at the clamping device of the traction mechanism includes the steps of: controlling the second bearing mechanism to drive the cell assembly to move in a first direction along the direction close to the second opening until the traction part at least partially extends into the second opening of the battery casing; controlling the clamping device of the traction mechanism to move in a first direction along the direction away from the first opening until the clamping device of the traction mechanism is located at the traction part.

[0009] Optionally, in step S2, controlling the clamping device of the traction mechanism and the battery cell assembly to move together in a first direction along the direction close to the first opening includes: controlling the second bearing mechanism to drive the battery cell assembly to move in a first direction along the direction close to the first opening, and controlling the clamping device of the traction mechanism to drive the battery cell assembly to move in a first direction along the direction close to the first opening.

[0010] Optionally, the method further includes the step of pre-bending the traction part before the clamping device of the traction mechanism clamps the traction part.

[0011] Optionally, the method further includes the step of: continuing to control the clamping device of the traction mechanism and the cell assembly to move together in a first direction away from the second opening until the cell assembly is fully inserted into the battery casing.

[0012] Optionally, the method further includes the steps of: controlling a portion of the cell assembly to enter the battery housing; controlling the clamping device of the traction mechanism to release the traction part and controlling the clamping device of the traction mechanism to leave the battery housing; and then applying force to fully push the cell assembly into the battery housing.

[0013] Optionally, the method further includes the step of: after the cell assembly has fully entered the battery housing, controlling the cutting mechanism to cut off the traction portion.

[0014] The present invention also provides a battery cell insertion device, which is applicable to the battery cell insertion method described in any of the above embodiments, specifically including a first supporting mechanism, a second supporting mechanism, a pre-bending mechanism, and a traction mechanism. The first supporting mechanism is used to support and fix the battery casing; the second supporting mechanism is used to support and transport the battery cell assembly along a first direction, and the second supporting mechanism and the first supporting mechanism are arranged sequentially along the first direction; the pre-bending mechanism is used to pre-bend the traction part; the pre-bending mechanism is located between the first supporting mechanism and the second supporting mechanism; the traction mechanism includes a clamping device and a running drive device, the clamping device is driven to move by the running drive device; the clamping device is used to clamp or release the traction part.

[0015] Optionally, it also includes a cutting mechanism for cutting off the traction portion.

[0016] Beneficial effects:

[0017] This cell insertion method places the battery casing on a first support mechanism, with the first and second openings of the battery casing facing each other along a first direction. The cell assembly is then placed on a second support mechanism, with the traction part facing the second opening of the battery casing. The clamping device of the traction mechanism enters the battery casing through the first opening, and the traction mechanism is further controlled to grip the traction part. The traction mechanism then pulls the cell assembly along the first direction, causing it to enter the battery casing, thus assembling the cell assembly with the battery casing. This cell insertion method uses a traction mechanism to clamp the traction part, pulling the cell into the battery casing, solving the problem of difficult cell insertion without affecting the battery's energy density. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the battery cell assembly provided in a specific embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the battery cell assembly after it enters the battery casing, according to a specific embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the end cap sealed battery casing provided in a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a battery cell provided in a specific embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the insulating film when it is unfolded according to a specific embodiment of the present invention;

[0023] Figure 6This is a schematic diagram of the structure of the battery cell housing device provided in a specific embodiment of the present invention;

[0024] Figure 7 This is a top view of the process by which the battery cell assembly is inserted into the battery casing provided in a specific embodiment of the present invention.

[0025] Figure 8 A side view of the cell insertion device provided in this invention, showing the process of inserting the cell assembly into the battery casing.

[0026] Figure 9 This is a cross-sectional view of a battery cell provided in a specific embodiment of the present invention.

[0027] In the picture:

[0028] 10. First bearing mechanism; 11. Clamping plate; 12. Workbench; 20. Second bearing mechanism; 30. Traction mechanism; 31. Clamping device; 40. Fixing block; 41. Channel; 42. First opening; 43. Second opening; 44. Inclined surface;

[0029] 100, Battery cell; 101, First tab; 102, Second tab; 200, Battery casing; 210, First opening; 220, Second opening; 300, First adapter; 400, Second adapter; 500, Insulating film; 501, Traction part; 600, First cover plate; 601, First insulating component; 700, Second cover plate; 701, Second insulating component; 800, End cap; 801, Third opening. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0031] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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 present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0034] In this specific embodiment, the first direction refers to the length direction of the battery cell 100, that is... Figure 1 , Figure 2 , Figure 6 and Figure 7 The X direction shown is shown; the second direction is the width direction of the cell 100, that is... Figure 1 and Figure 2 The Y direction is shown; the first and second directions are perpendicular to each other.

[0035] Example 1

[0036] This embodiment provides a method for inserting a battery cell into a battery housing 200, wherein the battery housing 200 has a first opening 210 and a second opening 220 disposed opposite to each other along a first direction, and the insulating film 500 has a traction portion 501 on at least one side in the first direction.

[0037] See Figures 1 to 8 As can be seen, a method for inserting a battery cell into a casing according to this embodiment specifically includes the following steps:

[0038] The battery casing 200 is mounted on the first support mechanism 10, with the first opening 210 and the second opening 220 of the battery casing 200 positioned opposite each other along a first direction; the battery cell assembly is mounted on the second support mechanism 20, with the traction unit 501 facing the second opening 220 of the battery casing 200; the clamping device 31 of the traction mechanism 30 and the battery casing 200 are controlled to move relative to each other, so that the clamping device 31 of the traction mechanism 30 enters the battery casing 200 from the first opening 210; the clamping device 31 of the traction mechanism 30 and the battery cell assembly are controlled to move relative to each other. The components move relative to each other in the first direction until the traction part 501 is at the clamping device 31 of the traction mechanism 30; the clamping device 31 of the traction mechanism 30 is controlled to clamp the traction part 501; the clamping device 31 of the traction mechanism 30 and the cell assembly are controlled to move together in the first direction in the direction close to the first opening 210 so that the cell assembly enters the battery housing 200; the clamping device 31 of the traction mechanism 30 and the cell assembly are controlled to move together in the first direction in the direction away from the second opening 220 until the cell assembly is completely inside the battery housing 200.

[0039] In the battery cell insertion method of this embodiment, since the battery housing 200 has a first opening 210 and a second opening 220 arranged opposite to each other along a first direction, the clamping device 31 of the traction device can be controlled to enter the battery housing from the first opening. Furthermore, since the traction part 501 is disposed on the insulating film 500, and the insulating film 500 covers and fixes the battery cell assembly, the traction device can pull the battery cell assembly through the traction part 501, allowing the battery cell assembly to enter the battery housing 200 from the second opening. This makes the insertion operation quick and accelerates the insertion speed. In addition, since the traction force is transmitted to the insulating film 500 through the traction part 501 during the process of driving the battery cell assembly into the battery housing 200, and the insulating film 500 then transmits the force to the battery cell assembly, the risk of battery cell deformation can be reduced compared to directly applying force to the battery cell.

[0040] It should be noted that in order to make the force on the battery cell assembly more uniform, multiple traction parts 501 are generally designed, and the multiple traction parts 501 are evenly distributed around the battery cell assembly in the first direction; specifically in this embodiment, there are two traction parts 501, and the two traction parts 501 are arranged opposite each other in the second direction.

[0041] It should also be noted that as long as the battery casing 200 of the battery cell has a first opening 210 and a second opening 220 arranged opposite to each other along the first direction, and the battery cell assembly is covered with an insulating film 500, the battery cell insertion method of this embodiment can be implemented for the insertion process. The battery cell assembly can be the battery cell 100, or it can be composed of the battery cell 100 and supports located on both sides of the battery cell 100 along the first direction. The specific composition of the battery cell assembly is not limited, as long as it has the battery cell 100. The size of the first opening 210 and the size relationship of the second opening 220 are not limited, as long as the battery cell assembly can enter the battery casing 200 through the second opening 220 and the clamping device of the traction equipment can enter the battery casing 200 through the first opening 210.

[0042] Specifically, in this embodiment, see Figure 9 It is known that the battery cell assembly includes a battery cell 100, a first cover plate assembly and a second cover plate assembly, and an insulating film 500 covers the battery cell 100. The two ends of the insulating film 500 along the first direction are respectively fixed to the first cover plate assembly and the second cover plate assembly.

[0043] In this embodiment, the battery cell 100 is confined within the space formed by the first cover plate assembly, the second cover plate assembly, and the insulating film 500. During the process of inserting the battery cell into the casing, it plays a role in protecting the battery cell 100 and can reduce the risk of battery cell deformation.

[0044] Specifically, see Figure 9 The first cover plate assembly includes a first cover plate 600, a first terminal post, and a first insulating member 601. The first terminal post is disposed on the first cover plate 600 and is insulated from the first cover plate 600. The first insulating member 601 is located between the first cover plate 600 and the cell body and is attached to the first cover plate 600. The second cover plate assembly includes a second cover plate 700, a second terminal post, and a second insulating member 701. The second terminal post is disposed on the second cover plate 700 and is insulated from the second cover plate 700. The second insulating member 701 is located between the second cover plate 700 and the cell body and is attached to the second cover plate 700. An insulating film 500 covers the outside of the cell 100, and one end of the insulating film 500 in a first direction is connected to the first insulating member 601 and the second insulating member 701.

[0045] Continuing, the battery cell 100 includes a battery cell body, a first tab 101, and a second tab 102. The first tab 101 and the second tab 102 extend from both sides of the battery cell body along a first direction, respectively. The first tab 101 of the battery cell 100 is connected to the first terminal of the first cover plate assembly through a first adapter 300; the second tab 102 of the battery cell 100 is connected to the second terminal of the second cover plate assembly through a second adapter 400.

[0046] In addition, in this specific embodiment, the first opening 210 and the second opening 220 of the battery casing 200 are the same size, that is, the battery cell also includes an end cap 800, the first cover plate 600 of the first cover plate assembly seals the second opening 220, the end cap 800 seals the second opening 220, the end cap 800 is provided with a third opening 801, and the second cover plate 700 of the second cover plate assembly seals the third opening 801.

[0047] In some other embodiments, the orthographic projection of the first opening 210 of the battery casing onto the projection plane is located within the orthographic projection of the second opening 220 of the battery casing onto the projection plane, and the projection plane and the first direction are perpendicular to each other; that is, the battery casing includes an outer shell and a cover, the second opening 220 is disposed at one end of the outer shell in the first direction, the other end of the outer shell is integrally formed or welded with a cover, and the first opening 210 is disposed on the cover.

[0048] In some embodiments, controlling the relative movement of the clamping device 31 of the traction mechanism 30 and the battery housing 200 includes: restricting the movement of the battery housing 200 by the first bearing mechanism 10, controlling the clamping device 31 of the traction mechanism 30 and the first opening 210 of the battery housing 200 to be aligned, and controlling the clamping device 31 of the traction mechanism 30 to move toward the second opening 220 of the battery housing 200.

[0049] In this embodiment, since the battery housing 200 is designed to be restricted from movement by the first support mechanism 10, that is, the battery housing 200 remains stationary throughout the entire process of the battery cell being inserted into the housing, the movement accuracy can be improved for both the clamping device 31 of the traction mechanism 30 entering the battery housing 200 and the battery cell assembly entering the battery housing 200. This can improve the accuracy of the battery cell assembly aligning with the second opening 220 of the battery housing 200 and prevent the edge of the battery housing from damaging the battery cell.

[0050] It should be noted that if the purpose is simply to allow the clamping device 31 of the traction mechanism 30 to enter the battery casing 200 through the first opening 210, it can be designed such that the clamping device 31 of the traction mechanism 30 remains stationary, while the first bearing mechanism 10 can drive the battery casing 200 to move until the clamping device 31 of the traction mechanism 30 enters the battery casing 200 through the first opening 210; it can also be designed such that the clamping device 31 of the traction mechanism 30 moves, and the first bearing mechanism 10 can drive the battery casing 200 to move until the clamping device 31 of the traction mechanism 30 enters the battery casing 200 through the first opening 210.

[0051] In some embodiments, controlling the clamping device 31 of the traction mechanism 30 and the battery cell assembly to move relative to each other in a first direction until the traction part 501 is positioned at the clamping device 31 of the traction mechanism 30 includes:

[0052] The second bearing mechanism 20 is controlled to move the cell assembly in the first direction along the direction close to the second opening 220 until the traction part 501 extends at least partially into the second opening 220 of the battery casing 200; the clamping device 31 of the traction mechanism 30 is controlled to move in the first direction along the direction away from the first opening 210 until the clamping device 31 of the traction mechanism 30 is at the traction part 501.

[0053] In this embodiment, the traction part 501 is designed to extend at least partially into the second opening 220 of the battery housing 200 before stopping the relative movement of the clamping device 31 of the traction mechanism 30 and the cell assembly in the first direction. In this way, the traction part 501 plays the role of guiding the cell assembly into the battery housing 200, further improving the accuracy of the cell assembly aligning with the second opening 220 of the battery housing 200.

[0054] It should be noted that, in order for the clamping device 31 of the traction mechanism 30 to clamp the traction part 501, it is also possible to control only the movement of the clamping device 31 of the traction mechanism 30 to extend out of the second opening 220 of the battery housing 200 until the clamping device 31 of the traction mechanism 30 is in the traction part 501.

[0055] Furthermore, in order to make it easier for the traction part 501 to extend into the second opening 220 of the battery housing 200, the traction part 501 is pre-bent before the clamping device 31 of the traction mechanism 30 clamps the traction part 501. It should be noted that pre-bending the traction part 501 means closing the traction part 501, so that the end of the traction part 501 away from the cell assembly can more easily enter the second opening 220 of the battery housing 200.

[0056] Specifically, the pre-bent traction section 501 is inclined toward the end face of the battery cell assembly, and the end face of the battery cell assembly is perpendicular to the first direction.

[0057] In some embodiments, controlling the clamping device 31 of the traction mechanism 30 and the battery cell assembly to move together in a first direction in a direction close to the first opening 210 includes: controlling the second bearing mechanism 20 to drive the battery cell assembly to move in a first direction in a direction close to the first opening 210, and controlling the clamping device 31 of the traction mechanism 30 to drive the battery cell assembly to move in a first direction in a direction close to the first opening 210.

[0058] In this embodiment, not only is a traction mechanism 30 designed to pull the cell assembly into the battery housing 200, but a second bearing mechanism 20 is also designed to assist the cell assembly in entering the battery housing 200. This not only greatly shortens the insertion time, but also reduces the traction force applied by the traction mechanism 30, thereby reducing the risk of deformation of the cell assembly.

[0059] It should be noted that, in order to allow the battery cell assembly to enter the battery casing 200, it is also possible to control only the clamping device 31 of the traction mechanism 30 to drive the battery cell assembly to move in the first direction along the direction close to the first opening 210.

[0060] See Figure 6 , Figure 7 and Figure 8 This embodiment of a battery cell installation device, applicable to a battery cell installation method, includes: a first support mechanism 10 for supporting and fixing a battery casing 200; a second support mechanism 20 for supporting and conveying a battery cell assembly along a first direction, the second support mechanism 20 and the first support mechanism 10 being arranged sequentially along the first direction; a pre-bending mechanism for pre-bending a traction part 501; the pre-bending mechanism being located between the first support mechanism 10 and the second support mechanism 20; and a traction mechanism 30, the traction mechanism 30 including a clamping device 31 and a running drive device, the clamping device 31 being driven to move by the running drive device; the clamping device 31 being used to clamp or release the traction part 501.

[0061] It should be noted that, in order to ensure that the battery cell assembly can be transported from the second support mechanism 10 to the first support mechanism 10, the distance between the second support mechanism 10 and the first support mechanism 10 is designed to be less than the length of the battery cell assembly along the first direction.

[0062] Regarding the first support mechanism 10, as long as the first support mechanism 10 can support and fix the battery housing 200, the specific structure is not limited. For example, the first support mechanism 10 includes a worktable 12 and a clamp. The clamp includes two clamping plates 11 arranged opposite to each other along the second direction. First, place the battery housing 200 on the worktable 12 and let the battery housing 200 be located between the two clamping plates 11. Then, control the two clamping plates 11 to move towards each other to achieve the purpose of fixing the battery housing 200.

[0063] The two clamping plates 11 can be controlled by a double-threaded ball screw and nut pair to move in opposite directions or in opposite directions at the same time, or each clamping plate 11 can be equipped with a telescopic actuator to achieve opposite or in opposite directions.

[0064] Regarding the second support mechanism 10, as long as the second support mechanism 10 can carry and transport the battery cell assembly along the first direction, the specific structure is not limited. For example, the second support mechanism 10 is a belt conveyor mechanism. First, the battery cell assembly is placed on the belt of the belt conveyor mechanism, and then the belt of the belt conveyor mechanism rotates to drive the battery cell assembly to move.

[0065] Regarding the pre-bending mechanism, it is only necessary to be able to pre-bend the traction part 501, and the specific structure is not limited. For example, the pre-bending mechanism includes a fixing block 40, which is fixed on the side of the workbench 12 near the second support mechanism 10. The fixing block 40 is provided with a channel 41 that runs through the fixing block 40 along the first direction. The channel 41 has a first opening 42 that is away from the second support mechanism 10, a second opening 43 that is opposite to the first opening 42, and an inclined surface 44 that connects the first opening 42 and the second opening 43. The size of the first opening 42 is equal to the size of the second opening 220 of the battery casing 200. The orthographic projection of the second opening 43 on the projection plane covers the orthographic projection of the traction part 501 on the projection plane of the insulating film 500. The projection plane is perpendicular to the first direction. The inclined surface 44 and the traction part 501 are in a one-to-one correspondence. Specifically, since the insulating film 500 has two traction parts 501 that are arranged opposite to each other along the second direction, the channel 41 has two inclined surfaces 44 that are arranged opposite to each other along the second direction.

[0066] The specific pre-bending process is as follows: the second bearing mechanism 10 is controlled to work, and the cell assembly is fed into the channel 41 from the second opening 43. Then, the traction part 501 is pre-bent under the cooperation of the thrust of the second bearing mechanism 10 conveying the cell assembly and the inclined surface 44. In addition, under the action of the inclined surface 44, the traction part 501 and the cell assembly are guided into the second opening 210 of the battery housing 200, ensuring the accuracy of the cell assembly aligned with the second opening 210 of the battery housing 200.

[0067] Regarding the clamping device 31, it is only necessary to be able to clamp or release the traction part 501. The specific structure is not limited. For example, the clamping device 31 includes at least one electric gripper. By giving the electric gripper an electrical signal, the electric gripper can be controlled to clamp or release the traction part 501.

[0068] Regarding the running drive device, it is only necessary to be able to drive the clamping device 31 to move in three-dimensional space. The specific structure is not limited. For example, the running drive device is an XYZ three-axis linear module. The drive end of the running drive device is connected to the electric gripper. Controlling the running drive device can drive the electric gripper to move, thereby enabling the clamping and traction unit 501 and the movement of the battery cell assembly through the traction unit 501.

[0069] Example 2

[0070] The method and equipment for inserting a battery cell into the casing in Embodiment 2 are the same as those in Embodiment 1, except that: after the battery cell assembly is completely inserted into the battery casing 200, the cutting mechanism is controlled to cut off the traction part 501.

[0071] In this embodiment, without changing the structure of the battery cell, and to avoid the added traction part 501 occupying the space inside the battery casing 200, the traction part 501 is designed to be directly cut off.

[0072] The battery cell housing device of this embodiment 2 also includes a cutting mechanism. The cutting mechanism is used to cut off the traction part 501. The cutting mechanism is only required to cut off the traction part 501. The specific structure is not limited. For example, the cutting mechanism includes a driver and a cutter. The driver drives the cutter to run to the traction part 501, and the driver drives the cutter to cut off the traction part 501.

[0073] Example 3

[0074] The method and equipment for inserting a battery cell into the battery casing in this embodiment 3 are the same as those in embodiment 1, except that: part of the battery cell assembly is controlled to enter the battery casing 200; the clamping device 31 of the traction mechanism 30 is controlled to release the traction part 501 and the clamping device 31 of the traction mechanism 30 is controlled to leave the battery casing 200; then a force is applied to push the battery cell assembly completely into the battery casing 200.

[0075] In this embodiment, the cell assembly is first pulled into the battery casing 200, and then pushed completely into the battery casing 200. This push-pull combination provides greater flexibility and is suitable for a wider range of battery cells. The cell insertion device in this embodiment 3 also includes a pushing mechanism. This mechanism is used to push the cell assembly into the battery casing 200. The specific structure of the pushing mechanism is not limited, as long as it can move the cell assembly. For example, the pushing mechanism includes a push plate and a driver. The driver moves the push plate to the end of the cell assembly away from the traction part 501, and the driver also drives the push plate to push the cell assembly along a first direction until the cell assembly is completely inside the battery casing 200.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for inserting battery cells into a casing, characterized in that, The battery casing (200) has a first opening (210) and a second opening (220) disposed opposite each other along a first direction. The battery cell assembly is covered with an insulating film (500), and the insulating film (500) has a traction portion (501) on at least one side in the first direction. The specific steps include: The battery housing (200) is disposed on the first support mechanism (10), and the first opening (210) and the second opening (220) of the battery housing (200) are disposed opposite to each other in a first direction; The cell assembly is mounted on the second support mechanism (20), and the traction part (501) is positioned directly opposite the second opening (220) of the battery casing (200). The clamping device (31) of the traction mechanism (30) and the battery housing (200) move relative to each other, so that the clamping device (31) of the traction mechanism (30) enters the battery housing (200) through the first opening (210) of the battery housing (200); Control the clamping device (31) of the traction mechanism (30) and the cell assembly to move relative to each other in a first direction until the traction part (501) is at the clamping device (31) of the traction mechanism (30); The clamping device (31) that controls the traction mechanism (30) clamps the traction part (501); The clamping device (31) of the traction mechanism (30) and the cell assembly move together in a first direction in a direction close to the first opening (210) so that the cell assembly enters the battery housing (200).

2. The method for inserting a battery cell into a casing according to claim 1, characterized in that, Controlling the relative movement of the clamping device (31) of the traction mechanism (30) and the battery housing (200) includes: restricting the movement of the battery housing (200) by means of a first bearing mechanism (10), controlling the clamping device (31) of the traction mechanism (30) and the first opening (210) of the battery housing (200) to be aligned, and controlling the clamping device (31) of the traction mechanism (30) to move toward the second opening (220) of the battery housing (200).

3. The method for inserting a battery cell into a casing according to claim 2, characterized in that, Controlling the clamping device (31) of the traction mechanism (30) and the cell assembly to move relative to each other in a first direction until the traction part (501) is positioned at the clamping device (31) of the traction mechanism (30) includes: Control the second support mechanism (20) to drive the cell assembly to move in a first direction along the direction close to the second opening (220) until the traction part (501) at least partially extends into the second opening (220) of the battery casing (200); The clamping device (31) of the traction mechanism (30) is controlled to move in a first direction away from the first opening (210) until the clamping device (31) of the traction mechanism (30) is at the traction part (501).

4. The method for inserting a battery cell into a casing according to claim 3, characterized in that, Controlling the clamping device (31) of the traction mechanism (30) and the battery cell assembly to move together in a first direction in a direction close to the first opening (210) includes: controlling the second bearing mechanism (20) to drive the battery cell assembly to move in a first direction in a direction close to the first opening (210), and controlling the clamping device (31) of the traction mechanism (30) to drive the battery cell assembly to move in a first direction in a direction close to the first opening (210).

5. The method for inserting a battery cell into a casing according to any one of claims 1 to 4, characterized in that, The method also includes the step of pre-bending the traction part (501) before the clamping device (31) of the traction mechanism (30) clamps the traction part (501).

6. The method for inserting a battery cell into a casing according to claim 5, characterized in that, It also includes the following steps: Continue to control the clamping device (31) of the traction mechanism (30) and the cell assembly to move together in the first direction away from the second opening (220) until the cell assembly is completely inserted into the battery housing (200).

7. The method for inserting a battery cell into a casing according to claim 5, characterized in that, The method also includes the steps of: controlling a portion of the cell assembly to enter the battery housing (200); controlling the clamping device (31) of the traction mechanism (30) to release the traction part (501) and controlling the clamping device (31) of the traction mechanism (30) to leave the battery housing (200); and then applying force to push the cell assembly completely into the battery housing (200).

8. The method for inserting a battery cell into a casing according to claim 5, characterized in that, It also includes the following steps: After the cell assembly is fully inserted into the battery housing (200), the cutting mechanism is controlled to cut off the traction part (501).

9. A battery cell installation device, characterized in that, The method for inserting battery cells into a casing as described in any one of claims 1-7 includes: A first support mechanism (10) is used to support and fix the battery casing (200); The second support mechanism (20) is used to support and transport the battery cell assembly along the first direction. The second support mechanism (20) and the first support mechanism (10) are arranged sequentially along the first direction. A pre-bending mechanism is used to pre-bend the traction part (501); the pre-bending mechanism is located between the first bearing mechanism (10) and the second bearing mechanism (20); The traction mechanism (30) includes a clamping device (31) and a running drive device. The clamping device (31) is driven to move by the running drive device. The clamping device (31) is used to clamp or release the traction unit (501).

10. The cell insertion device according to claim 9, characterized in that, It also includes a cutting mechanism for cutting off the traction part (501).

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