Casing device and assembling method of battery and battery assembling system

Abstract

The invention discloses a shell entering device and an assembling method of a battery and a battery assembling system. The shell entering device comprises a rack, a bearing mechanism and a shell assembling mechanism, the bearing mechanism is arranged on the rack and is used for bearing the bottom cover and the electrode assembly supported above the bottom cover; the shell loading mechanism is arranged on the rack and comprises a shell fixing mechanism and a tab part guiding mechanism, the shell fixing mechanism is used for fixing a shell, and the tab part guiding mechanism and the shell fixing mechanism can be close to or far away from the bearing mechanism; the shell fixing mechanism is configured to enable the shell to be arranged on the outer side of the electrode assembly in a sleeving mode through the opening end when the shell fixing mechanism moves close to the bearing mechanism. And the tab part guide mechanism is configured to guide the tab part to penetrate out of the accommodating cavity from the through hole when the shell sleeves the electrode assembly. Through the mode, the tab part smoothly extends out of the shell, so that the electrode assembly can be accurately put into the shell, the preparation difficulty of the battery is reduced, and the assembly efficiency and the yield of the battery are improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery shell insertion device and assembly method and a battery assembly system. Background Art

[0002] A battery is a cup, tank or other container or part of a composite container that contains an electrolyte solution and metal electrodes to generate an electric current. It is a device that can convert chemical energy into electrical energy. With the development of science and technology, batteries with advantages such as easy portability, simple and easy charging and discharging, and long-term stable power supply are widely used in the fields of automobiles, home appliances, aerospace, etc.

[0003] The battery's tabs are metal conductors that lead the positive and negative electrodes out of the shell from the battery cell. Therefore, during the battery assembly process, the battery's tabs need to be led out of the shell to serve as contact points when the battery is charged and discharged. However, during the battery assembly process, when the battery cell is assembled in the shell, the tabs are easily bent inside the shell and cannot extend out of the shell, which makes the battery assembly and preparation process more difficult and the battery preparation yield is low. Summary of the invention

[0004] In view of the above problems, the present application provides a battery shell insertion device and assembly method and a battery assembly system, which can enable the pole ear to smoothly extend out of the shell to achieve accurate shell insertion of the electrode assembly, reduce the difficulty of the battery preparation process, and thus improve the battery assembly efficiency and yield rate.

[0005] In a first aspect, the present application provides a battery shell insertion device, wherein the battery includes a shell, a bottom cover, and an electrode assembly. The shell has an open end, and a pole is arranged on the wall of the shell opposite to the open end, and the pole has a through hole, and the shell and the bottom cover are connected to form a receiving cavity connected to the through hole. The active material coating portion of the electrode assembly is arranged in the shell, and the pole ear portion of the electrode assembly passes through the through hole and is connected to the side of the pole away from the receiving cavity.

[0006] The shell insertion device includes a frame, a bearing mechanism and a shell loading mechanism. The bearing mechanism is arranged on the frame, and is used to carry the bottom cover and the electrode assembly supported on the bottom cover. The shell loading mechanism is arranged on the frame, and includes a shell fixing mechanism and a pole ear guiding mechanism. The shell fixing mechanism is used to fix the shell, and the pole ear guiding mechanism and the shell fixing mechanism can be close to or away from the bearing mechanism. Among them, the shell fixing mechanism is configured to be able to sleeve the shell through the open end on the outside of the electrode assembly when moving close to the bearing mechanism. The pole ear guiding mechanism is configured to guide the pole ear to pass through the accommodating cavity from the through hole when the shell is sleeved on the electrode assembly.

[0007] In the technical solution of the embodiment of the present application, a housing fixing mechanism and an ear tab guiding mechanism are provided on the housing insertion device. The housing fixing mechanism can sleeved the housing from the open end outside the electrode assembly. During the process of sleeving the housing on the electrode assembly, the ear tab guiding mechanism can guide the ear tabs to pass through the through hole and out of the receiving cavity. Such a design enables the ear tabs of the battery to be smoothly guided through the through hole and out of the receiving cavity when the electrode assembly of the battery is inserted into the housing, so that the ear tabs are not likely to block the housing from being sleeved outside the electrode assembly, realizing the accurate insertion of the electrode assembly into the housing, reducing the difficulty of the battery manufacturing process, and improving the assembly efficiency and the yield rate of the battery.

[0008] In some embodiments, both the ear tab guiding mechanism and the housing fixing mechanism are arranged above the carrying mechanism, and both can move up or down relative to the carrying mechanism.

[0009] By arranging both the ear tab guiding mechanism and the housing fixing mechanism to be able to move up or down relative to the carrying mechanism, it is convenient for the ear tab guiding mechanism and the housing fixing mechanism to approach the electrode assembly carried on the carrying mechanism, so that the housing fixing mechanism can more conveniently sleeve the housing outside the electrode assembly, and the ear tab guiding mechanism can also more effectively penetrate into the receiving cavity to clamp the ear tabs.

[0010] In some embodiments, the process of sleeving the housing on the electrode assembly includes a first stage and a second stage arranged in sequence. In the first stage, the housing fixing mechanism and the ear tab guiding mechanism are arranged to be able to move down relative to the carrying mechanism together, so that the ear tab guiding mechanism can contact the ear tabs in the receiving cavity. In the second stage, the housing fixing mechanism is arranged to be able to move down relative to the ear tab guiding mechanism, so that the ear tab guiding mechanism guides the ear tabs to pass through the through hole and out of the receiving cavity.

[0011] Through the above arrangement, after the ear tab guiding mechanism can contact the ear tabs in the receiving cavity in the first stage, the housing fixing mechanism further moves down relative to the ear tab guiding mechanism, so that the ear tab guiding mechanism can be stationary relative to the ear tabs in the second stage. At this time, when the housing fixing mechanism further drives the housing to move down, the ear tab guiding mechanism can guide the ear tabs to penetrate into the through hole, so that the ear tabs are not likely to contact the housing and block the housing from being sleeved on the electrode assembly or cause the ear tabs to bend and deform in the second stage, improving the efficiency of inserting the electrode assembly into the housing and thus improving the yield rate of the battery.

[0012] In some embodiments, before the first stage, the ear tab guiding mechanism is arranged to be able to move down relative to the housing fixing mechanism along the preset assembly direction, penetrate into the receiving cavity from one side of the housing through the through hole, and move down relative to the carrying mechanism together with the housing fixing mechanism in the first stage.

[0013] By passing the tab guiding mechanism through the accommodation cavity before the housing is sleeved onto the electrode assembly, it is convenient for the tab guiding mechanism to contact the tabs in the accommodation cavity after the housing is sleeved onto the electrode assembly, so as to facilitate guiding the tabs through the through holes, thereby improving the battery assembly efficiency.

[0014] In some embodiments, the housing fixing mechanism is slidably disposed on the frame so as to be able to move up or down relative to the carrying mechanism, and the tab guiding mechanism is slidably connected to the housing fixing mechanism so as to be able to move up or down relative to the carrying mechanism.

[0015] By setting the tab guiding mechanism to be slidably connected to the housing fixing mechanism, it is convenient for the tab guiding mechanism and the housing fixing mechanism to perform relative movement, and it can make the housing fixing mechanism and the tab guiding mechanism have a floating function, so as to facilitate the housing fixing mechanism and the tab guiding mechanism to be able to approach or move away from the electrode assembly on the carrying mechanism relatively, so as to facilitate assembling the housing and guiding the tabs through the through holes, and improving the battery assembly efficiency.

[0016] In some embodiments, the housing loading mechanism includes a first lifting drive mechanism, the housing fixing mechanism includes a first support frame and a fixing execution mechanism, the first support frame is slidably disposed on the frame, the first lifting drive mechanism is disposed on the frame and is used to drive the first support frame to move up and down relative to the frame, the fixing execution mechanism is disposed on the first support frame and is used to fix the housing. The housing loading mechanism includes a second lifting drive mechanism, the tab guiding mechanism includes a second support frame and a guiding execution mechanism, the second support frame is slidably disposed on the first support frame, the second lifting drive mechanism is disposed on the first support frame and is used to drive the second support frame to move up and down relative to the first support frame, and the guiding execution mechanism is disposed on the second support frame and is used to contact and guide the tabs.

[0017] By disposing the second support frame and the guiding execution mechanism on the first support frame, when the first lifting drive mechanism drives the first support frame, the first support frame can move the tab guiding mechanism and the fixing execution mechanism for fixing the housing at the same time, and the second support frame can move relative to the first support frame and the fixing execution mechanism under the drive of the second lifting drive mechanism, so that the guiding execution mechanism and the fixing execution mechanism can cooperate with each other to guide the tabs through the through holes when assembling the electrode assembly into the housing, thereby improving the battery assembly efficiency.

[0018] In some embodiments, the casing mechanism includes a guiding and positioning mechanism, which is slidably disposed on the frame so as to be able to move up and down relative to the frame. The casing fixing mechanism is slidably connected to the guiding and positioning mechanism so as to be able to move up and down relative to the guiding and positioning mechanism. The guiding and positioning mechanism is used to position and align the casing and the electrode assembly before the casing is sleeved on the electrode assembly, and is configured to guide the relative movement between the electrode assembly and the casing when the casing is sleeved on the electrode assembly.

[0019] By providing the guiding and positioning mechanism to position the casing and the electrode assembly, the electrode assembly can be aligned with the casing when entering the casing, so as to achieve accurate insertion of the electrode assembly into the casing, thereby improving the assembly efficiency of the battery.

[0020] In some embodiments, the casing mechanism includes a third lifting drive mechanism. The guiding and positioning mechanism includes a third support frame and a positioning execution mechanism. The third support frame is slidably disposed on the frame. The third lifting drive mechanism is disposed on the frame and is used to drive the third support frame to move up and down relative to the frame. The positioning execution mechanism is disposed on the third support frame. The positioning execution mechanism is used to position and align the casing and the electrode assembly, and to guide the relative movement between the electrode assembly and the casing.

[0021] By disposing the positioning execution mechanism on the third support frame and using the third lifting drive mechanism to drive the third support frame to drive the positioning execution mechanism to move relative to the frame, the positioning execution mechanism can be made to move relative to the loading mechanism on the frame. Separating the drive mechanism of the positioning execution mechanism from the drive mechanism of the casing can make the positioning execution mechanism move relative to the casing, and further make more effective use of the positioning execution mechanism to cooperate with the casing to move, position and align the casing and the electrode assembly, and guide them, so as to achieve accurate insertion of the electrode assembly into the casing.

[0022] In some embodiments, the casing mechanism includes a guiding and positioning mechanism, which is disposed between the casing fixing mechanism and the loading mechanism. The guiding and positioning mechanism is configured to position and align the casing and the electrode assembly before the casing is sleeved on the electrode assembly.

[0023] By disposing the guiding and positioning mechanism between the casing fixing mechanism and the loading mechanism to simultaneously position and align the casing and the electrode assembly, not only can the casing and the electrode assembly be positioned and guided at the moment when the electrode assembly enters the casing, achieving accurate insertion of the electrode assembly into the casing, but also the components of the casing device can be simplified, the cost of the casing device can be reduced, and the assembly efficiency of the battery can be improved.

[0024] In some embodiments, the guiding and positioning mechanism is configured to guide the relative movement between the electrode assembly and the casing along a preset assembly direction during the process of the casing being sleeved on the electrode assembly.

[0025] By utilizing the guiding and positioning mechanism to guide the movement of the electrode assembly and the shell during the process of the shell being inserted into the electrode assembly, not only can the positions of the shell and the electrode assembly be less likely to shift during the process of the shell being inserted into the electrode assembly, but also the shell is less likely to interfere with each other and get stuck during the process of the shell being inserted into the electrode assembly, thereby more effectively achieving accurate insertion of the electrode assembly into the shell.

[0026] In some embodiments, the shell fixing mechanism and the guide positioning mechanism are configured to be able to move relative to each other in a preset assembly direction, and the shell fixing mechanism can be lowered relative to the guide positioning mechanism so that the guide positioning mechanism positions the shell. The shell fixing mechanism and the guide positioning mechanism are configured to be lowered relative to the supporting mechanism together after the guide positioning mechanism positions the shell so that the guide positioning mechanism positions the electrode assembly.

[0027] By using the guide positioning mechanism to position the shell fixing mechanism, the position of the shell can be relatively fixed, so that the subsequent electrode assembly is not likely to collide with the shell and cause the shell to shift when entering the shell. After the guide positioning mechanism positions the shell, it descends relative to the supporting mechanism, so that the guide positioning mechanism positions the electrode assembly to facilitate the electrode assembly to enter the shell, thereby making the process of the electrode assembly entering the shell more accurate, thereby improving the assembly efficiency of the battery.

[0028] In some embodiments, the guiding and positioning mechanism includes a positioning guide plate, which is located between the shell fixing mechanism and the supporting mechanism. The positioning guide plate is provided with a positioning hole that passes through a preset assembly direction, and the positioning hole is used to position and align the shell and the electrode assembly.

[0029] By using the positioning guide plate to position and align the shell and the electrode assembly, the positioning process can be made simpler and more convenient, thereby reducing the difficulty of battery preparation, simplifying the shell insertion device, and saving costs.

[0030] In some embodiments, the guiding and positioning mechanism includes a positioning drive mechanism, the positioning guide plate includes at least two guide plates, the positioning drive mechanism is transmission-connected to the at least two guide plates so as to be able to drive the at least two guide plates to be assembled or separated from each other in a direction vertical to a preset assembly direction, and the at least two guide plates are assembled to form a positioning hole.

[0031] Through the above arrangement, the movement of the guide plates can be made more flexible, so that they can be assembled together to form positioning holes before the electrode assembly is inserted into the shell. After the electrode assembly is inserted into the shell, at least two guide plates can be separated from each other in the vertical direction of the preset assembly direction, and it is not easy to block the shell and the electrode assembly from moving in other directions, so that the supporting mechanism can drive the electrode assembly and the shell to leave the shell entry station and enter other processing stations, so as to improve the overall assembly efficiency of the battery.

[0032] In some embodiments, the positioning drive mechanism is configured to drive at least two guide plates to mate with each other when the shell fixing mechanism descends to a preset position relative to the guide positioning mechanism, so that the shell can be positioned through the positioning hole. After being assembled with each other, the at least two guide plates can descend together with the shell fixing mechanism, so that the electrode assembly can be positioned through the positioning hole.

[0033] By driving at least two guide plates to fit together when the shell fixing mechanism descends to a preset position, the guide positioning mechanism can form a positioning hole between the shell fixing mechanism and the electrode assembly, so that the shell clamped by the shell fixing mechanism passes through the positioning hole before it is descended and inserted into the electrode assembly, so that the positioning hole can be used to position the shell, and then the guide plate descends together with the shell to position the electrode assembly, thereby improving the efficiency of the electrode assembly entering the shell.

[0034] In some embodiments, each guide plate has a partial hole wall for enclosing the positioning hole, and the partial hole wall includes a first hole wall segment and a second hole wall segment connected along a preset assembly direction, and the connection between the first hole wall segment and the second hole wall segment forms a bearing edge. When at least two guide plates are assembled with each other, their bearing edges are assembled with each other to form a support surface facing the shell fixing mechanism, and the support surface is used to abut the open end of the shell to position the shell. The positioning hole is configured to allow the electrode assembly to pass through the positioning hole from the other side of the at least two guide plates away from the support surface, so that the electrode assembly can be positioned.

[0035] By providing the supporting edge portion, it is possible to facilitate the guiding and positioning mechanism to position the shell, thereby improving the accuracy and efficiency of inserting the electrode assembly into the shell.

[0036] In some embodiments, the positioning drive mechanism is configured to drive at least two guide plates to separate from each other after the pole ear guiding mechanism contacts the pole ear to evacuate the stopper facing the open end of the support platform, so that the shell fixing mechanism can further insert the shell into the electrode assembly.

[0037] By arranging the positioning drive mechanism to drive at least two guide plates to separate from each other after the pole ear guide mechanism contacts the pole ear, the positioning drive mechanism can still position the shell and the electrode assembly during the process of the pole ear guide mechanism contacting the pole ear, so that the shell and the electrode assembly can be relatively fixed, and it is convenient for the pole ear guide mechanism to contact the pole ear. The arrangement of driving at least two guide plates to separate from each other after the pole ear guide mechanism contacts the pole ear can prevent the at least two guide plates from blocking each other with the shell fixing mechanism that clamps the shell, so that the shell can be smoothly inserted into the electrode assembly to complete the step of inserting the electrode assembly into the shell.

[0038] In some embodiments, guiding inclined surfaces are respectively arranged on both sides of the positioning and guiding plate. The guiding inclined surfaces are arranged in a converging shape in the direction close to the positioning hole to guide the open end and the electrode assembly to move into the positioning hole.

[0039] By arranging the guiding inclined surfaces, the housing and the electrode assembly can be guided, facilitating the movement of the housing electrode assembly into the positioning hole, so that the positioning and guiding plate can position the housing and the electrode assembly.

[0040] In some embodiments, the carrying mechanism includes a carrying fixture and a fixture driving mechanism. The carrying fixture is connected to the fixture driving mechanism. The carrying fixture is used for clamping the electrode assembly, and the fixture driving mechanism is used for driving the carrying fixture to switch between a clamping state and an unloading state. The fixture driving mechanism is arranged to drive the carrying fixture to switch to the unloading state during the process of the housing being sleeved on the electrode assembly to avoid the housing fixing mechanism.

[0041] By using the carrying fixture to clamp the electrode assembly, the electrode assembly and the bottom cover can be fixed. When the electrode assembly and the electrode assembly are sleeved into the housing, the electrode assembly is not likely to shift or even fall off. Moreover, by arranging the fixture driving mechanism to drive the carrying fixture to be in the unloading state during the process of the housing being sleeved on the electrode assembly, the fixture driving mechanism is not likely to block the housing, so that the housing driving mechanism can smoothly sleeve the housing on the electrode assembly.

[0042] In some embodiments, the housing fixing mechanism is arranged to clamp the housing, and the ear tab guiding mechanism is arranged to clamp the ear tab to guide the ear tab to pass through the through hole by clamping the ear tab.

[0043] By adopting the method of clamping the housing and the ear tab, the housing and the ear tab can be conveniently fixed, the battery assembly process can be made simpler, and the assembly equipment can also be simplified.

[0044] In a second aspect, the present application provides a battery assembly system, which includes the housing inserting device as described above.

[0045] In some embodiments, the battery assembly system further includes a conveying device and an assembly device. The conveying device is used for conveying the structures to be assembled to each station of the assembly device. The stations of the assembly device include the housing inserting device, and at least further include an ear tab welding device, an ear tab passing device, a terminal welding device, and a bottom cover welding device.

[0046] Among them, the tab welding device is used to weld multiple tabs of the electrode assembly to form a tab. The shell inserting device is used to insert the electrode assembly into the set housing from the open end. The tab passing through device is used to hold the tab and pass it through the through hole when the electrode assembly is inserted into the housing. The pole column welding device is used to weld the tab passing through the through hole to the side of the pole column facing away from the accommodating cavity. The bottom cover welding device is used to weld the bottom cover to the open end of the housing.

[0047] By providing a shell inserting device in the battery assembly system, it can enable the tab to smoothly extend out of the housing, so as to achieve the precise insertion of the electrode assembly into the housing, reduce the difficulty of the battery manufacturing process, and thus improve the assembly efficiency and the qualified rate of the battery.

[0048] In a third aspect, the present application provides an assembly method for a battery. The battery includes a housing and an electrode assembly. The housing has an open end, and a pole column is provided on the wall of the housing opposite to the open end. The pole column has a through hole, and the housing and the bottom cover are connected to form an accommodating cavity communicating with the through hole. The active material coating part of the electrode assembly is arranged inside the housing, and the tab of the electrode assembly passes through the through hole and is connected to the side of the pole column facing away from the accommodating cavity.

[0049] The assembly method includes: respectively fixing the housing and the electrode assembly; controlling the housing to descend relative to the electrode assembly so as to sleave the housing over the electrode assembly through the open end during the descending process; and guiding the tab to pass out of the accommodating cavity from the through hole during the process of sleaving the housing over the electrode assembly.

[0050] During the process of sleaving the housing over the electrode assembly, the shell inserting device can guide the tab to penetrate into the through hole, so that the tab is not likely to block the sleaving of the housing over the electrode assembly, thereby achieving the precise insertion of the electrode assembly into the housing, and improving the assembly efficiency and the qualified rate of the battery.

[0051] In some embodiments, before controlling the housing to descend relative to the electrode assembly along a preset direction, it includes: penetrating into the accommodating cavity from one side of the housing through the through hole.

[0052] Guiding the tab to pass out of the accommodating cavity from the through hole includes: contacting the tab during the process of sleaving the housing over the electrode assembly and guiding the tab to pass out of the accommodating cavity from the through hole.

[0053] Through the above settings, before the housing is sleaved over the electrode assembly, the shell inserting device can penetrate into the accommodating cavity from one side of the housing through the through hole to prepare for clamping and guiding the tab. And during the process of sleaving the housing over the electrode assembly, the shell inserting device contacts the tab and guides the tab to pass out of the accommodating cavity from the through hole, which can reduce the contact between the tab and the housing, so that the tab is not likely to contact the housing in the second stage and block the sleaving of the housing over the electrode assembly or cause the tab to bend and deform, etc., and can improve the efficiency of inserting the electrode assembly into the housing.

[0054] In some embodiments, during the process of fitting the housing onto the electrode assembly, the contact electrode ear part is contacted, and the electrode ear part is guided to pass through the through hole and out of the accommodation cavity, including: in the first stage, the contact electrode ear part is contacted within the accommodation cavity; in the second stage, the housing is controlled to descend relative to the electrode ear part to guide the electrode ear part to pass through the through hole and out of the accommodation cavity.

[0055] Through the above arrangement, after the contact electrode ear part is contacted within the accommodation cavity, the housing can descend relative to the electrode ear part guiding mechanism along the preset assembly direction, so as to be able to guide the electrode ear part to pass through the through hole and out of the accommodation cavity, and complete the process of fitting the electrode assembly into the housing, thereby improving the efficiency of fitting the electrode assembly into the housing and the yield rate of the battery.

[0056] In some embodiments, the assembly method further includes: welding the electrode ear part and the electrode post.

[0057] Through the above arrangement, when assembling the battery, the electrode ear part of the electrode assembly and the electrode post on the housing are welded, which can not only enable the electrode ear part and the electrode post to achieve electrical connection, but also ensure the reliability and stability of the connection between the electrode ear and the electrode post.

[0058] In some embodiments, the battery further includes an electrode post cover plate. The assembly method further includes: welding the electrode post cover plate and the electrode post to seal the through hole with the electrode post cover plate.

[0059] Through the above arrangement, an electrode post cover plate is provided on the battery, and the through hole is covered with the electrode post cover plate, so that the electrode post cover plate and the electrode post cooperate with each other to seal the through hole, enabling the accommodation cavity inside the battery housing to be a closed environment, making it difficult for external impurities, water droplets and other substances to enter the accommodation cavity of the battery through the through hole, and also making it difficult for the material components in the accommodation cavity to leak out to the outside through the through hole. Moreover, the arrangement of welding the electrode post cover plate and the electrode post can enable the electrode post cover plate to be connected to the electrode ear through the electrode post, so that the energy of the electrode assembly can be transmitted to the outside of the battery through the relatively large-area electrode post and the electrode post cover plate, thereby improving the charging and discharging efficiency of the battery.

[0060] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0061] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0062] Figure 1Schematic diagram of the exploded structure of the battery according to some embodiments of the present application;

[0063] Figure 2 Schematic diagram of the structure of the shell - inserting device according to some embodiments of the present application;

[0064] Figure 3 Schematic diagram of the structure of the carrying mechanism according to some embodiments of the present application;

[0065] Figure 4 Schematic diagram of the structure of the shell - installing mechanism according to some embodiments of the present application;

[0066] Figure 5 Front - view structure schematic diagram of the shell - installing mechanism according to some embodiments of the present application;

[0067] Figure 6 Exploded - structure schematic diagram of the shell - installing mechanism according to some embodiments of the present application;

[0068] Figure 7 Schematic diagram of the structure of the guiding and positioning mechanism according to some embodiments of the present application;

[0069] Figure 8 is Figure 7 An enlarged schematic diagram of the Q area in the guiding and positioning mechanism shown in equal proportion;

[0070] Figure 9 is Figure 8 Cross - sectional structure schematic diagram of the component positioning guide plate shown along the cutting line C - C;

[0071] Figure 10 Another schematic diagram of the structure of the carrying mechanism according to some embodiments of the present application;

[0072] Figure 11 Flow - chart schematic diagram of the battery assembly method according to some embodiments of the present application.

[0073] The reference numerals in the specific embodiments are as follows:

[0074] Vehicle 1000;

[0075] Battery 1, housing 10, electrode assembly 20, accommodation cavity 11, open end 12, top 13, through - hole 14, tab 21, terminal 15, bottom cover 30, terminal cover plate 40;

[0076] Shell loading device 2, shell loading mechanism 200, bearing mechanism 300, shell fixing mechanism 210, tab guiding mechanism 220, frame 230, first lifting drive mechanism 240, first support frame 211, fixing execution mechanism 212, second lifting drive mechanism 250, second support frame 221, guiding execution mechanism 222, guiding and positioning mechanism 260, third lifting drive mechanism 270, third support frame 261, positioning execution mechanism 262, positioning guide plate 263, positioning hole 264, positioning drive mechanism 265, guide plate 2631, first hole wall section 2632, second hole wall section 2633, flange portion 2634, bearing surface 2635, guiding inclined surface 2636, conveying line 310, bearing fixture 320, fixture drive mechanism 330. Detailed implementation manners

[0077] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0079] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0080] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0081] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0082] In the description of the embodiments of the present application, the term "a plurality of" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups), and "a plurality of sheets" means two or more sheets (including two sheets).

[0083] In the description of the embodiments of the present application, for technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0084] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0085] With the development of battery technology, batteries are applied in more and more fields and gradually replace traditional fossil energy in the field of automotive power. A battery can store chemical energy and controllably convert the chemical energy into electrical energy. In a recyclable battery, after discharging, the active substances can be activated by charging and continue to be used.

[0086] A battery refers to a cup, trough or other container or a partial space of a composite container containing an electrolyte solution and metal electrodes to generate current, and is a device that can convert chemical energy into electrical energy. With the development of technology, batteries with the advantages of being easy to carry, simple and easy to charge and discharge, and providing stable power supply for a long time are widely used in fields such as automobiles, household appliances, and aerospace.

[0087] The tab of a battery is a metal conductor that leads the positive and negative electrodes out of the cell case. Therefore, during the assembly process of the battery, the tab of the battery needs to be led out of the case to serve as the contact point when the battery is charged and discharged. However, during the assembly process of the battery, when the cell of the battery is assembled into the case, the tab is easily bent inside the case and cannot extend out of the case, resulting in a high difficulty in the assembly preparation process of the battery and a low yield of battery preparation.

[0088] In order to achieve accurate insertion of the electrode assembly into the shell and smoothly extend the pole ear portion from the inside of the shell to the outside of the shell, the pole ear portion can be guided when the electrode assembly is inserted into the shell so that the pole ear portion can smoothly extend from the inside of the shell to the outside of the shell.

[0089] Based on the above considerations, the present application provides a battery shell insertion device and assembly method. The shell fixing mechanism can be used to insert the shell into the electrode assembly through the open end during the descent process, and the pole ear guiding mechanism can guide the pole ear to penetrate into the through hole during the shell insertion process. Such a design enables the pole ear of the battery to be guided through the through hole when the electrode assembly of the battery is inserted into the shell, so that the pole ear is not easy to block the shell from being inserted into the electrode assembly, so as to achieve accurate shell insertion of the electrode assembly, thereby improving the assembly efficiency and yield rate of the battery.

[0090] The following is an exemplary description of a battery.

[0091] like Figure 1 As shown, the battery 1 can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0092] In some embodiments, the battery 1 may include a housing 10, a bottom cover 30, and an electrode assembly 20. The battery 1 may also include other functional components.

[0093] In some embodiments, the housing 10 is used to encapsulate components such as the electrode assembly 20 and the electrolyte.

[0094] The housing 10 may have an open end 12, a pole 15 may be provided on a wall of the housing 10 opposite to the open end 12, the pole 15 may have a through hole 14, and the housing 10 and the bottom cover 30 may be connected to form a receiving cavity 11 connected to the through hole 14. The active material coating portion of the electrode assembly 20 may be disposed in the housing 10, and the pole ear portion 21 of the electrode assembly 20 passes through the through hole 14 and is connected to a side of the pole 15 away from the receiving cavity 11.

[0095] The bottom cover 30 can cover the open end 12 of the shell 10 to isolate the internal environment of the battery 1 from the external environment. Without limitation, the shape of the bottom cover 30 can be adapted to the shape of the open end 12 to match the shell 10. Optionally, the bottom cover 30 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the bottom cover 30 is not easily deformed when squeezed and collided, so that the battery 1 can have a higher structural strength and the safety performance can also be improved.

[0096] In some embodiments, components such as the terminal post 15 may be provided on the top 13 of the housing 10. The terminal post 15 can be used for electrically connecting with the electrode assembly 20 to output or input electrical energy of the battery 1. In some embodiments, a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery 1 reaches a threshold may also be provided on the housing 10.

[0097] The housing 10 is a component for cooperating with the bottom cover 30 to form the internal environment of the battery 1. Among them, the formed internal environment can be used to accommodate the electrode assembly 20, the electrolyte, and other components. The housing 10 and the bottom cover 30 can be independent components. An open end 12 may be provided on the housing 10, and the bottom cover 30 is covered at the open end 12 to form the internal environment of the battery 1. In other embodiments, the shape of the housing 10 can be determined according to the specific shape and size of the electrode assembly 20. The material of the housing 10 can be various, for example, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0098] The electrode assembly 20 is a component in the battery 1 where an electrochemical reaction occurs. The housing 10 can contain one or more electrode assemblies 20.

[0099] In some embodiments, the electrode assembly 20 is provided with tab portions 21. The tab portions 21 can conduct current out of the electrode assembly 20. The tab portions 21 include a positive tab and a negative tab. The positive tab and the negative tab can be located at one end of the main body portion together or at both ends of the main body portion respectively. During the charging and discharging process of the battery, the positive active material and the negative active material react with the electrolyte, and the tab portions 21 are connected to the terminal post 15 to form a current loop.

[0100] In some embodiments, the electrode assembly 20 includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short - circuiting and at the same time allow the active ions to pass through.

[0101] In some embodiments, the positive electrode can be a positive electrode sheet, and the positive electrode sheet can include a positive current collector and a positive active material provided on at least one surface of the positive current collector.

[0102] As an example, the positive current collector has two surfaces opposite to each other in its own thickness direction, and the positive active material is provided on any one or both of the two opposite surfaces of the positive current collector.

[0103] As an example, the positive electrode current collector can be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium, etc. can be used. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver, and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0104] As an example, the positive electrode active material can include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, this application is not limited to these materials, and other conventional materials that can be used as battery positive electrode active materials can also be used. These positive electrode active materials can be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates can include, but are not limited to, lithium iron phosphate (such as LiFePO 4 (which can also be abbreviated as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO 4 ), a composite material of lithium manganese phosphate and carbon, lithium manganese iron phosphate, a composite material of lithium manganese iron phosphate and carbon, etc. Examples of lithium transition metal oxides can include, but are not limited to, lithium cobalt oxide (such as LiCoO 2 ), lithium nickel oxide (such as LiNiO 2 ), lithium manganese oxide (such as LiMnO 2 , LiMn2O 4 ), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O 2 (which can also be abbreviated as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O 2 (which can also be abbreviated as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O 2 (which can also be abbreviated as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O 2 (which can also be abbreviated as NCM 622 ), LiNi 0.8 Co 0.1 Mn0.1 O 2 (which can also be abbreviated as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O 2 ) and at least one of its modified compounds, etc.

[0105] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0106] As an example, the negative electrode current collector can be a metal foil, a foam metal or a composite current collector. For example, as the metal foil, aluminum or stainless steel with a silver surface treatment, stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel or titanium, etc. can be used. The foam metal can be foam nickel, foam copper, foam aluminum, foam alloy, or foam carbon, etc. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (such as copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0107] As an example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material provided on at least one surface of the negative electrode current collector.

[0108] As an example, the negative electrode current collector has two surfaces opposite to each other in its own thickness direction, and the negative electrode active material is provided on any one or both of the two opposite surfaces of the negative electrode current collector.

[0109] As an example, the negative electrode active material can be a negative electrode active material for a battery well-known in the art. As an example, the negative electrode active material can include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, and lithium titanate, etc. The silicon-based materials can be selected from at least one of elemental silicon, silicon oxides, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based materials can be selected from at least one of elemental tin, tin oxides, and tin alloys. However, the present application is not limited to these materials, and other conventional materials that can be used as the negative electrode active material of the battery can also be used. These negative electrode active materials can be used alone or in combination of two or more.

[0110] In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0111] In some embodiments, the electrode assembly 20 further includes a separator, and the separator is disposed between the positive electrode and the negative electrode.

[0112] In some embodiments, the separator is a separation membrane. The present application does not particularly limit the type of the separation membrane, and any well-known porous structure separation membrane with good chemical stability and mechanical stability can be selected.

[0113] As an example, the main material of the separation membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramics. The separation membrane can be a single-layer film or a multi-layer composite film, without particular limitation. When the separation membrane is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a single component located between the positive and negative electrodes or attached to the surfaces of the positive and negative electrodes.

[0114] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0115] In some embodiments, the battery 1 further includes an electrolyte, which functions to conduct ions between the positive and negative electrodes. The present application does not specifically limit the type of the electrolyte, and it can be selected according to requirements. The electrolyte can be liquid, gel-like, or solid.

[0116] Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0117] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalate borate, lithium bis(oxalate)borate, lithium difluorodioxalate phosphate, and lithium tetrafluorooxalate phosphate.

[0118] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, sulfolane, dimethyl sulfone, methyl ethyl sulfone, and diethyl sulfone. The solvent can also be an ether solvent. The ether solvent can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether, and crown ether.

[0119] Among them, the gel-like electrolyte includes a polymer as the skeleton network of the electrolyte, combined with an ionic liquid-lithium salt.

[0120] Among them, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0121] As an example, the polymer solid electrolyte can be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, single-ion polymer, polyionic liquid-lithium salt, cellulose, etc.

[0122] As an example, the inorganic solid electrolyte can be one or more of oxide solid electrolytes (crystalline perovskite, sodium superionic conductor, garnet, amorphous LiPON film), sulfide solid electrolytes (crystalline lithium superionic conductor (lithium germanium phosphorus sulfur, argyrodite), amorphous sulfide), and halide solid electrolytes, nitride solid electrolytes, and hydride solid electrolytes.

[0123] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to the polymer solid electrolyte.

[0124] In some embodiments, the electrode assembly 20 has a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0125] In some embodiments, the electrode assembly 20 and the housing 10 are assembled and fitted through the housing insertion device 2 to form the battery 1.

[0126] Reference can be made to Figure 2 , hereinafter, the housing insertion device 2 of the battery 1 is exemplarily described in the present application. The housing insertion device 2 can be used to insert the electrode assembly 20 into the housing 10 from the open end 12.

[0127] As Figure 2 shown, the housing insertion device 2 can include a frame 230, a housing loading mechanism 200, and a carrying mechanism 300.

[0128] The carrying mechanism 300 can be disposed on the frame 230 and is used to carry the bottom cover 30 and support the electrode assembly 20 above the bottom cover 30.

[0129] The housing loading mechanism 200 can be disposed on the frame 230 and can include a housing fixing mechanism 210 and an ear tab guiding mechanism 220. The housing fixing mechanism 210 is used to fix the housing 10, and both the ear tab guiding mechanism 220 and the housing fixing mechanism 210 can approach or move away from the carrying mechanism 300.

[0130] Optionally, as Figures 2 to 3 shown, the electrode assembly 20 and the bottom cover 30 can be stacked on the carrying mechanism 300 in a preset assembly direction in sequence, so that after the electrode assembly 20 is inserted into the housing, the bottom cover 30 can cover the open end 12. The carrying mechanism 300 can also further fix the electrode assembly 20 and the bottom cover 30 to reduce the displacement of the electrode assembly 20 during transportation or housing insertion.

[0131] Among them, as Figures 2 to 4 shown, the housing fixing mechanism 210 can be configured to sleave the housing 10 outside the electrode assembly 20 through the open end 12 when moving close to the bearing mechanism 300. The tab guiding mechanism 220 can be configured to guide the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11 when the housing 10 is sleeved on the electrode assembly 20.

[0132] With the above arrangement, when the housing fixing mechanism 210 drives the housing 10 to be sleeved on the electrode assembly 20, the tab guiding mechanism 220 can guide the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11. Such a design enables the tab 21 of the battery 1 to be smoothly guided and pass through the through hole 14 and out of the accommodation cavity 11 when the electrode assembly 20 of the battery 1 is inserted into the housing, so that the tab 21 is not likely to block the housing 10 from being sleeved on the electrode assembly 20, thereby realizing the accurate insertion of the electrode assembly 20 into the housing, and improving the assembly efficiency and the yield rate of the battery 1.

[0133] In some embodiments, as Figures 2 to 4 shown, both the tab guiding mechanism 220 and the housing fixing mechanism 210 can be arranged above the bearing mechanism 300, and both can move up or down relative to the bearing mechanism 300.

[0134] By arranging both the tab guiding mechanism 220 and the housing fixing mechanism 210 above the bearing mechanism 300, it is convenient to assemble the tabs. Being arranged to be able to move up or down relative to the bearing mechanism 300 can facilitate the tab guiding mechanism 220 and the housing fixing mechanism 210 to approach the electrode assembly 20 carried on the bearing mechanism 300, so that the housing fixing mechanism 210 can more conveniently sleave the housing 10 outside the electrode assembly 20, and also enable the tab guiding mechanism 220 to more effectively penetrate into the accommodation cavity 11 to clamp the tab 21.

[0135] Of course, in other embodiments, both the tab guiding mechanism 220 and the housing fixing mechanism 210 can be arranged in other positions of the bearing mechanism 300. For example, both the tab guiding mechanism 220 and the housing fixing mechanism 210 can be arranged on the left or right side of the bearing mechanism 300, and both the tab guiding mechanism 220 and the housing fixing mechanism 210 can move relative to the bearing mechanism 300 to approach or move away from the electrode assembly 20 on the bearing mechanism 300.

[0136] Optionally, the housing fixing mechanism 210 and the tab guiding mechanism 220 are arranged to be able to lift relative to the carrier mechanism 300 along a preset assembly direction, so as to correspondingly move away from or close to the carrier mechanism 300. During the descending process of the housing fixing mechanism 210, the housing 10 is sleeved into the electrode assembly 20 through the open end 12. During the process of the housing 10 being sleeved into the electrode assembly 20, the tab guiding mechanism 220 is configured to guide the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11 when the housing 10 is sleeved into the electrode assembly 20. Wherein, the preset assembly direction is as Figure 2 shown by the arrow A in

[0137] In some embodiments, the housing fixing mechanism 210 can be arranged to clamp the housing 10, and the tab guiding mechanism 220 is arranged to clamp the tab 21, so as to clamp the tab 21 and guide the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11.

[0138] Optionally, the housing fixing mechanism 210 can be arranged to clamp the housing 10 above the carrier mechanism 300, so that the housing fixing mechanism 210 will not block the electrode assembly 20 from entering the housing, and is not likely to block the tab 21 from passing through the through hole 14 at the top 13 of the housing 10. Thus, it is convenient to fix the housing 10 and the tab 21, which can also make the assembly process of the battery 1 simpler and simplify the assembly equipment.

[0139] In some embodiments, the process of the housing 10 being sleeved into the electrode assembly 20 can include a first stage and a second stage arranged in sequence.

[0140] In the first stage, the housing fixing mechanism 210 and the tab guiding mechanism 220 can be arranged to be able to descend together relative to the carrier mechanism 300, so that the tab guiding mechanism 220 can contact the tab 21 within the accommodation cavity 11. In the second stage, the housing fixing mechanism 210 can be arranged to be able to descend relative to the tab guiding mechanism 220, so that the tab guiding mechanism 220 guides the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11.

[0141] Through the above arrangement, after the tab guiding mechanism 220 contacts the tab 21, the housing fixing mechanism 210 further descends relative to the tab guiding mechanism 220, so that the tab guiding mechanism 220 can be stationary relative to the tab 21 in the second stage. At this time, when the housing fixing mechanism 210 further drives the housing 10 to descend, the tab guiding mechanism 220 can guide the tab 21 to pass through the through hole 14 and out of the accommodation cavity 11. Thus, it is not easy for the tab 21 to contact the housing 10 in the second stage to block the housing 10 from being sleeved into the electrode assembly 20 or cause the tab 21 to be bent and deformed, etc. The efficiency of the electrode assembly 20 entering the housing can be improved, and thus the yield rate of the battery 1 can be improved.

[0142] In some embodiments, before the first stage, the ear guiding mechanism 220 can be set to be able to descend relative to the housing fixing mechanism 210 along a preset assembly direction, penetrate into the accommodation cavity 11 from one side of the housing 10 through the through hole 14, and descend relative to the bearing mechanism 300 together with the housing fixing mechanism 210 in the first stage. Wherein, the preset assembly direction can be as Figure 2 shown by direction A in

[0143] By penetrating the ear guiding mechanism 220 into the accommodation cavity 11 before the housing 10 is sleeved on the electrode assembly 20, it is convenient for the ear guiding mechanism 220 to contact the ear part 21 in the accommodation cavity 11 after the housing 10 is sleeved on the electrode assembly 20, so as to facilitate guiding the ear part 21 to penetrate out of the accommodation cavity 11 from the through hole 14, thereby improving the assembly efficiency of the battery 1.

[0144] In some embodiments, as Figure 2 shown, the housing fixing mechanism 210 is slidably arranged on the frame 230 to be able to rise or lift relative to the bearing mechanism 300, and the ear guiding mechanism 220 is slidably connected to the housing fixing mechanism 210 to be able to rise or lift relative to the housing fixing mechanism 210.

[0145] By setting the ear guiding mechanism 220 to be slidably connected to the housing fixing mechanism 210, it is convenient for the ear guiding mechanism and the housing fixing mechanism to perform relative movement, and the housing fixing mechanism 210 and the ear guiding mechanism 220 can have a floating function, so as to facilitate the housing fixing mechanism 210 and the ear guiding mechanism 220 to be able to approach or move away from the electrode assembly 20 on the bearing mechanism 300 relatively, so as to facilitate assembling the housing 10 and guiding the ear part 21 to penetrate out of the accommodation cavity 11 from the through hole 14, and improve the assembly efficiency of the battery 1.

[0146] In some embodiments, as Figures 2 to 6 shown, the housing loading mechanism 200 can include a first lifting driving mechanism 240, the housing fixing mechanism 210 can include a first support frame 211 and a fixing execution mechanism 212. The first support frame 211 is slidably arranged on the frame 230, the first lifting driving mechanism 240 is arranged on the frame 230 for driving the first support frame 211 to lift relative to the frame 230, and the fixing execution mechanism 212 is arranged on the first support frame 211. The fixing execution mechanism 212 is used to fix the housing 10. Wherein, the first lifting driving mechanism 240 can be, for example, a cylinder driving mechanism, or other devices such as a motor.

[0147] Optionally, the first lifting drive mechanism 240 can drive the first support frame 211 to lift relative to the frame 230 along a preset assembly direction. Specifically, when the first lifting drive mechanism 240 drives the first support frame 211 to lift relative to the frame 230, the first support frame 211 can drive the fixed actuator 212 that fixedly clamps the housing 10 to lift relative to the frame 230, so that the fixed actuator 212 can perform a lifting motion relative to the electrode assembly 20 on the bearing mechanism 300 in the preset assembly direction.

[0148] Optionally, as Figures 2 to 6 shown, the case loading mechanism 200 can include a second lifting drive mechanism 250, and the pole ear guiding mechanism 220 can include a second support frame 221 and a guiding actuator 222. The second support frame 221 is slidably disposed on the first support frame 211. The second lifting drive mechanism 250 is disposed on the first support frame 211 and is used to drive the second support frame 221 to lift relative to the first support frame 211. The guiding actuator 222 is disposed on the second support frame 221, and the guiding actuator 222 is used to contact and guide the pole ear 21. Among them, the second lifting drive mechanism 250 can be, for example, a cylinder drive mechanism, or other devices such as a motor.

[0149] Optionally, the second lifting drive mechanism 250 can drive the second support frame 221 to lift relative to the frame 230 along a preset assembly direction. Specifically, when the first support frame 211 is driven by the first lifting mechanism to lift relative to the frame 230, the first support frame 211 can drive the pole ear guiding mechanism 220 to lift relative to the frame 230 together, so that the pole ear guiding mechanism 220 can approach the pole ear 21. And the second lifting drive mechanism can drive the second support frame 221 to lift relative to the first support frame 211 and the fixed actuator 212 on the first support frame 211, so that the guiding actuator 222 can perform a lifting motion relative to the fixed actuator 212, so that the guiding actuator 222 can enter the through hole 14 and enter the accommodation cavity 11 to be prepared to clamp the pole ear 21.

[0150] By arranging the second support frame 221 and the guiding actuator 222 on the first support frame 211, when the first lifting drive mechanism 240 drives the first support frame 211, the first support frame 211 can simultaneously move the pole ear guiding mechanism 220 and the fixing actuator 212 for fixing the housing 10, and the second support frame 221 can move relative to the first support frame 211 and the fixing actuator 212 under the drive of the second lifting drive mechanism 250, so that the guiding actuator 222 and the fixing actuator 212 can cooperate with each other to guide the pole ear 21 to pass through the through hole 14 and out of the accommodation cavity 11 when the electrode assembly 20 is assembled into the housing 10, thereby improving the assembly efficiency of the battery 1.

[0151] In some embodiments, as Figures 2 to 8 shown, the housing assembly mechanism 200 may further include a guiding and positioning mechanism 260. The guiding and positioning mechanism 260 is slidably disposed on the frame 230 to be able to lift relative to the frame 230.

[0152] The housing fixing mechanism 210 is slidably connected to the guiding and positioning mechanism 260 to be able to lift relative to the guiding and positioning mechanism 260. The guiding and positioning mechanism 260 is used to position and align the housing 10 and the electrode assembly 20 before the housing 10 is sleeved on the electrode assembly 20, and is configured to guide the relative movement of the electrode assembly 20 and the housing 10 when the housing 10 is sleeved on the electrode assembly 20.

[0153] By arranging the guiding and positioning mechanism 260 to position the housing 10 and the electrode assembly 20, the electrode assembly 20 can be aligned with the housing 10 when entering the housing, so as to achieve accurate insertion of the electrode assembly 20 into the housing, thereby improving the assembly efficiency of the battery 1.

[0154] In some embodiments, as Figure 2 shown, the housing assembly mechanism 200 may include a third lifting drive mechanism 270. The guiding and positioning mechanism 260 includes a third support frame 261 and a positioning actuator 262. The third support frame 261 is slidably disposed on the frame 230. The third lifting drive mechanism 270 is disposed on the frame 230 and is used to drive the third support frame 261 to lift relative to the frame 230. The positioning actuator 262 may be disposed on the third support frame 261. The positioning actuator 262 can be used to position and align the housing 10 and the electrode assembly 20, and guide the relative movement of the electrode assembly 20 and the housing 10. Among them, the third lifting drive mechanism 270 may be, for example, a cylinder drive mechanism, or other devices such as a motor.

[0155] By arranging the positioning actuator 262 on the third support frame 261 and using the third lifting drive mechanism 270 to drive the third support frame 261 to drive the positioning actuator 262 to lift relative to the frame 230, the positioning actuator 262 can be lifted relative to the bearing mechanism 300 on the frame 230, so that the positioning actuator 262 can position and guide the housing 10 according to the movement of the housing 10, and can also be restored relative to the electrode assembly 20 to prepare for the next guidance.

[0156] Separating the drive mechanism of the positioning actuator 262 from the drive mechanism of the housing 10 enables the positioning actuator 262 to move relative to the housing 10, and further enables the positioning actuator 262 to be more effectively used to cooperate with the housing 10 in motion, position and align the housing 10 and the electrode assembly 20, and guide them to achieve the precise insertion of the electrode assembly 20 into the housing.

[0157] In some embodiments, the guiding and positioning mechanism 260 can be arranged between the housing fixing mechanism 210 and the bearing mechanism 300. The guiding and positioning mechanism 260 can be arranged to position and align the housing 10 and the electrode assembly 20 before the housing 10 is sleeved on the electrode assembly 20.

[0158] Arranging the guiding and positioning mechanism 260 between the housing fixing mechanism 210 and the bearing mechanism 300 to simultaneously position and align the housing 10 and the electrode assembly 20 can not only position and guide the housing 10 and the electrode assembly 20 at the moment when the electrode assembly 20 is inserted into the housing, achieve the precise insertion of the electrode assembly 20 into the housing, but also simplify the components of the insertion device 2 and improve the assembly efficiency of the battery 1.

[0159] In some embodiments, the guiding and positioning mechanism 260 can be arranged to guide the relative movement of the electrode assembly 20 and the housing 10 along a preset assembly direction during the process of the housing 10 being sleeved on the electrode assembly 20.

[0160] Utilizing the guiding and positioning mechanism 260 to guide the relative movement of the electrode assembly 20 and the housing 10 along a preset assembly direction can prevent the positions of the housing 10 and the electrode assembly 20 from shifting easily during the process of the housing 10 being sleeved on the electrode assembly 20, so that the housing 10 and the electrode assembly 20 are not likely to hinder or jam each other during the sleeving process, and thus more effectively achieve the precise insertion of the electrode assembly 20 into the housing.

[0161] In some embodiments, the housing fixing mechanism 210 and the guiding and positioning mechanism 260 can be arranged to be able to move relative to each other in a preset assembly direction. The housing fixing mechanism 210 can descend relative to the guiding and positioning mechanism 260, enabling the guiding and positioning mechanism 260 to position the housing 10.

[0162] The housing fixing mechanism 210 and the guiding and positioning mechanism 260 are arranged to descend relative to the bearing mechanism 300 together after the guiding and positioning mechanism 260 positions the housing 10, so that the guiding and positioning mechanism 260 positions the electrode assembly 20.

[0163] Optionally, when the housing fixing mechanism 210 drives the housing 10 to descend relative to the guiding and positioning mechanism 260 and reaches the position of the guiding and positioning mechanism 260, the housing 10 can be guided and positioned by the guiding and positioning mechanism 260. Then, the third lifting drive mechanism 270 can drive the guiding and positioning mechanism 260 and the housing fixing mechanism 210 to descend relative to the bearing mechanism 300, so that the electrode assembly 20 is guided and positioned by the guiding and positioning mechanism 260 before approaching the housing 10 to prepare for housing insertion, so that the electrode assembly 20 can be positioned and aligned with the housing 10, so that when the housing fixing mechanism 210 and the guiding and positioning mechanism 260 further descend, the electrode assembly 20 can be accurately inserted into the housing, so as to improve the assembly efficiency of the battery 1.

[0164] In some embodiments, such as Figure 7 and Figure 8 As shown, the guiding and positioning mechanism 260 may include a positioning and guiding plate 263. The positioning and guiding plate 263 may be located between the housing fixing mechanism 210 and the bearing mechanism 300. The positioning and guiding plate 263 may be provided with a positioning hole 264 penetrating along a preset assembly direction. The positioning hole 264 can be used to position and align the housing 10 and the electrode assembly 20.

[0165] Optionally, the positioning and guiding plate 263 may be adapted to the housing 10, and the positioning hole 264 may be adapted to the shape of the electrode assembly 20, so that the housing 10 is guided and positioned by the positioning and guiding plate 263, and the positioning hole 264 and the positioning and guiding plate 263 can guide the electrode assembly 20, so that when the electrode assembly 20 is inserted into the housing, the positioning and guiding plate 263 aligns the electrode assembly 20 with the housing 10.

[0166] Moreover, only using the positioning and guiding plate 263 to position and align the housing 10 and the electrode assembly 20 can make the positioning process simpler and more convenient, thereby reducing the preparation difficulty of the battery 1, and can also simplify the housing insertion device 2 and save costs.

[0167] In some embodiments, such as Figure 7 and Figure 8As shown, the guiding and positioning mechanism 260 may include a positioning driving mechanism 265. The positioning guiding plate 263 may include at least two guiding plates 2631. The positioning driving mechanism 265 is in transmission connection with the at least two guiding plates 2631 so as to be able to drive the at least two guiding plates 2631 to fit together or separate from each other in the direction perpendicular to the preset assembly direction. The at least two guiding plates 2631 fit together to enclose a positioning hole 264. Among them, the positioning driving mechanism 265 may be, for example, a cylinder driving mechanism, or other devices such as a motor.

[0168] Since the housing 10 fixing assembly drives the housing 10 to move relative to the electrode assembly 20 on the bearing mechanism 300 in the preset assembly direction, setting the at least two guiding plates 2631 to be able to fit together or move away from each other in the direction perpendicular to the preset assembly direction can enable the at least two guiding plates 2631 to avoid the housing 10 and the electrode assembly 20 during the movement process and is not likely to block or collide with the housing 10 or the electrode assembly 20.

[0169] Such a setting can make the movement of the guiding plate 2631 more flexible, facilitating the fit together to form the positioning hole 264 before the electrode assembly 20 enters the housing. After the electrode assembly 20 enters the housing, the at least two guiding plates 2631 can also separate from each other in the direction perpendicular to the preset assembly direction, so as to facilitate the bearing mechanism 300 to drive the electrode assembly 20 and the housing 10 to leave the housing insertion station and enter other processing stations, thereby improving the overall assembly efficiency of the battery 1.

[0170] In some embodiments, the positioning driving mechanism 265 may be set to drive the at least two guiding plates 2631 to fit together when the housing fixing mechanism 210 descends relative to the guiding and positioning mechanism 260 to a preset position, so as to be able to position the housing 10 through the positioning hole 264. After the at least two guiding plates 2631 fit together, they can descend together with the housing fixing mechanism 210 to position the electrode assembly 20 through the positioning hole 264.

[0171] Optionally, the preset position may be set to be before the housing fixing mechanism 210 drives the housing 10 to descend relative to the guiding and positioning mechanism 260 to the position corresponding to the at least two guiding plates 2631, so that before the housing fixing mechanism 210 drives the housing 10 to reach the position corresponding to the at least two guiding plates 2631, the at least two guiding plates 2631 can fit together to form the positioning hole 264, and then when the housing fixing mechanism 210 drives the housing 10 to descend further, it can be positioned by the at least two guiding plates 2631 and the positioning hole 264, wherein the open end 12 of the housing 10 can be aligned with the positioning hole 264.

[0172] Further, after at least two guide plates 2631 position the housing 10 through the positioning holes 264, they can descend along the preset assembly direction together with the housing fixing mechanism 210 to approach the electrode assembly 20. Subsequently, at least two guide plates 2631 position the electrode assembly 20 through the positioning holes 264, enabling the electrode assembly 20 to align with the positioning holes 264 and the open end 12 of the housing 10. After that, after at least two guide plates 2631 and the housing fixing mechanism 210 further descend, the electrode assembly 20 can further pass through the positioning holes 264 to enter the accommodation cavity 11 of the housing 10 through the open end 12, thereby effectively achieving the precise insertion of the electrode assembly 20 into the housing and improving the assembly efficiency of the battery 1.

[0173] Optionally, as Figure 8 shown, the number of at least two guide plates 2631 can be two, and the two guide plates 2631 can be joined together or separated from each other in the direction perpendicular to the preset assembly direction. Among them, the movement directions of the two guide plates 2631 can be as Figure 8 shown by the B arrow in

[0174] When the two guide plates 2631 are joined together, they can enclose to form the positioning holes 264. When the housing fixing mechanism 210 drives the housing 10 to descend, it can be guided by the two guide plates 2631, and the open end 12 of the housing 10 is aligned with the electrode assembly 20. When the two guide plates 2631 are separated from each other, they can move away from the housing 10 so that the fixing actuator 212 can clamp the housing 10 to continue to insert the electrode assembly 20, completing the process of inserting the electrode assembly 20 into the housing.

[0175] Using two guide plates 2631 to form the positioning holes 264 can simplify the housing insertion device 2, reduce the cost of the housing insertion device 2, and also facilitate the positioning drive mechanism 265 to control and drive the two guide plates 2631 to form the positioning holes 264 or separate from each other and move away from the housing 10.

[0176] In some embodiments, as Figures 8 to 9 shown, each guide plate 2631 can have a partial hole wall for surrounding the positioning hole 264. The partial hole wall can include a first hole wall section 2632 and a second hole wall section 2633 connected along the preset assembly direction. A bearing edge portion 2634 is formed at the connection of the first hole wall section 2632 and the second hole wall section 2633. When at least two guide plates 2631 are joined together, their bearing edge portions 2634 are spliced together to form a bearing surface 2635 facing the housing fixing mechanism 210. The bearing surface 2635 can be used to abut against the open end 12 of the housing 10 to position the housing 10.

[0177] A bearing edge portion 2634 is provided on a part of the hole wall surrounding the positioning hole 264 to form a bearing surface 2635, so that the bearing surface 2635 can surround the positioning hole 264. When the open end 12 of the housing 10 abuts against the bearing surface 2635, the open end 12 can be aligned with the positioning hole 264, so that the housing 10 is aligned with the electrode assembly 20 below the guide plate 2631.

[0178] Optionally, the positioning hole 264 can be arranged such that the electrode assembly 20 passes through the positioning hole 264 from the other side of at least two guide plates 2631 facing away from the bearing surface 2635, so as to be able to position the electrode assembly 20.

[0179] Specifically, after the open end 12 of the housing 10 abuts against the bearing surface 2635, at least two guide plates 2631 are driven by the positioning driving mechanism 265 to descend along with the housing 10 along the preset assembly direction. Then, the side of the positioning hole 264 facing away from the housing 10 approaches the electrode assembly 20. The electrode assembly 20 can be positioned and guided by the positioning hole 264 and pass through the positioning hole 264, and then further penetrate into the accommodation cavity 11 of the housing 10 through the open end 12, thereby improving the accuracy and efficiency of the electrode assembly 20 entering the housing.

[0180] In some embodiments, the positioning driving mechanism 265 can be arranged to drive at least two guide plates 2631 to separate from each other after the pole ear guiding mechanism 220 contacts the pole ear 21, so as to withdraw the stop of the bearing surface 2635 on the open end 12, so that the housing fixing mechanism 210 can further sleeved the housing 10 onto the electrode assembly 20.

[0181] Optionally, when the pole ear guiding mechanism 220 contacts the pole ear 21, the housing 10 has not been completely sleeved onto the electrode assembly 20. After the pole ear guiding mechanism 220 contacts the pole ear 21, the housing 10 will be driven by the first lifting driving mechanism 240 to further move along the preset assembly direction towards the electrode assembly 20 to be further completely sleeved onto the electrode assembly 20. During this process, at least two guide plates 2631 will not only stop the open end 12, but also cause mutual blocking with the bearing mechanism 300 that clamps and fixes the electrode assembly 20. Therefore, the arrangement of driving at least two guide plates 2631 to separate from each other can enable the housing 10 to be smoothly sleeved onto the electrode assembly 20 to complete the step of the electrode assembly 20 entering the housing.

[0182] In some embodiments, as Figure 9 shown, guiding inclined surfaces 2636 can be respectively arranged on both sides of the positioning and guiding plate 263. The guiding inclined surfaces 2636 are arranged in a converging shape in the direction approaching the positioning hole 264 to guide the open end 12 and the electrode assembly 20 to move into the positioning hole 264.

[0183] Specifically, on one side of the positioning guide plate 263 facing the housing 10 and on one side facing the carrier mechanism 300 in the preset assembly direction, guiding inclined surfaces 2636 are respectively provided. The guiding inclined surfaces 2636 on both sides can surround the positioning hole 264 and are connected to a partial hole wall of the positioning hole 264. The extending direction of the guiding inclined surfaces 2636 is set at an acute angle with the preset assembly direction, so that the guiding inclined surfaces 2636 are arranged in a converging shape in the direction closer to the positioning hole 264.

[0184] During the process that the housing 10 approaches and contacts at least two guide plates 2631, if the original position of the housing 10 is accurate, the open end 12 of the housing 10 can directly abut against the bearing surface 2635. If the position of the housing 10 is shifted and does not align with the bearing surface 2635, after contacting at least two guide plates 2631, it can be guided by the guiding inclined surfaces 2636 to position and guide the housing 10, so that the housing 10 moves to align with the bearing surface 2635 and the positioning hole 264.

[0185] The electrode assembly 20 is also positioned and aligned with the positioning hole 264 through the guiding inclined surfaces 2636 on the other side of the guide plate 2631, which facilitates the movement of the electrode assembly 20 into the positioning hole 264 to complete the step of inserting the electrode assembly 20 into the housing.

[0186] In some embodiments, as Figure 10 shown, the carrier mechanism 300 may include a carrier fixture 320 and a fixture driving mechanism 330, and the fixture driving mechanism 330 is connected to the carrier fixture 320.

[0187] The carrier fixture 320 can be used to clamp the electrode assembly 20, and the fixture driving mechanism 330 can be used to drive the carrier fixture 320 to switch between the clamping state and the unloading state. The fixture driving mechanism 330 is configured to drive the carrier fixture 320 to switch to the unloading state during the process of sleeving the housing 10 on the electrode assembly 20 to avoid the housing fixing mechanism 210.

[0188] Furthermore, the carrier fixture 320 can also clamp the bottom cover 30, so that the electrode assembly 20 and the bottom cover 30 can be relatively fixed after being stacked in sequence. When the conveyor line 310 conveys the carrier fixture 320, it can simultaneously drive the electrode assembly 20 and the bottom cover 30 clamped by the carrier mechanism 300, so that during the process of the conveyor line 310 conveying the electrode assembly 20 and the bottom cover 30, the electrode assembly 20 and the bottom cover 30 are not likely to be displaced or even dropped.

[0189] Moreover, the fixture driving mechanism 330 is configured to drive the carrier fixture 320 to be in the unloading state during the process of the housing 10 being sleeved onto the electrode assembly 20, which can prevent the fixture driving mechanism 330 from easily blocking the housing 10. The housing 10 can be smoothly sleeved onto the electrode assembly 20, and the open end 12 of the housing 10 can abut against the bottom cover 30 to complete the step of inserting the electrode assembly 20 into the housing.

[0190] Optionally, the fixture driving mechanism 330 is configured to drive the carrier fixture 320 to switch to the unloading state during the further process of the housing 10 being sleeved onto the electrode assembly 20 after the pole ear guiding mechanism 220 contacts the pole ear 21. With this arrangement, during the process of the pole ear guiding mechanism 220 contacting the pole ear 21, the carrier fixture 320 still clamps the electrode assembly 20 to further fix the electrode assembly 20, so as to prevent the pole ear guiding assembly from colliding with the electrode assembly 20 and causing the electrode assembly 20 to shift.

[0191] Based on the basic structures of the above battery 1 and the battery housing device 2 of the battery 1, the following is an exemplary description of the battery assembly system in the battery assembly system embodiments.

[0192] The battery assembly system may include the housing device 2 as described above. The battery assembly system may further include a conveying device and an assembling device. The conveying device can be used to convey the structures to be assembled and the carrier mechanism 300 to each station of the assembling device. The stations of the assembling device may at least include a pole ear welding device, a pole ear piercing device, a terminal welding device, and a bottom cover welding device.

[0193] It should be noted that, in this embodiment, the conveying device may include a conveying line 310. The conveying line 310 can be a conveying structure formed by a conveying roller driven by a motor cooperating with a conveyor belt, or a conveying structure formed by articulated conveying chain links driven by a motor, or an AGV conveying trolley, which can realize conveying in at least one direction and can support and ensure the stability of the structures to be assembled.

[0194] Optionally, the carrier fixture 320 can be arranged on the conveying line 310 of the conveying device, and the conveying line 310 can be used to convey the carrier fixture 320. The fixture driving mechanism 330 can be arranged on the conveying line 310. The carrier mechanism 300 is used to carry the structures to be assembled of the battery 1, and the conveying line 310 can be connected to the carrier mechanism 300, and the conveying line 310 can convey the structures to be assembled of the battery and the carrier mechanism 300 together.

[0195] Among them, the ear welding device can be used to weld a plurality of tab pieces of the electrode assembly 20 to form an ear part 21. The housing inserting device 2 is used to insert the electrode assembly 20 into the housing 10 from the open end 12. The ear part passing through device is used to hold the ear part 21 and pass it through the through hole 14 when the electrode assembly 20 is inserted into the housing 10. The terminal welding device is used to weld the ear part 21 passing through the through hole 14 to the side of the terminal 15 away from the accommodating cavity 11. The bottom cover welding device is used to weld the bottom cover 30 to the open end 12 of the housing 10.

[0196] Specifically, the purpose of the ear welding device can be to form the ear part 21 after pre-welding the tab pieces, and it can be an ultrasonic welding device, which can ensure that the tab pieces are welded in a stable clamped state. The housing inserting device can be a pushing mechanism or a clamping mechanism, which can stably move the electrode assembly 20 towards the open end 12 of the housing 10 and enter the accommodating cavity 11 through the open end 12. Similarly, the ear part passing through device can adopt a clamping structure or a guiding structure, which can guide the ear part 21 to smoothly pass through the through hole 14 without interfering with the housing 10. The purpose of the terminal welding device is to weld the ear part 21 and the terminal 15, and it can be a laser welding device. The purpose of the bottom cover welding device is to weld the circumferential edge of the bottom cover 30 and the open end 12 of the housing 10, and it is also a laser welding device.

[0197] In addition, the assembly equipment is not limited to including the ear welding device, the housing inserting device, the ear part passing through device, the terminal welding device and the bottom cover welding device. Exemplarily, when the number of electrode assemblies 20 is multiple, for example, two, the assembly equipment can further include a pairing device, which can be used to stack a plurality of electrode assemblies 20 so that the ear parts of the two electrode assemblies 20 are substantially opposite, so that the conveying structure can convey the paired electrode assemblies 20 to the ear welding device for welding the ear parts to facilitate the formation of the ear part 21. Another example is that in order to ensure the reliability of the battery 1 assembly process, a dust removal and NG detection station can also be added between any two adjacent workstations, which is not limited in this embodiment.

[0198] Taking the above battery 1 embodiment and the housing inserting device 2 of the battery 1 as an example, the following describes the assembly method of the battery 1 exemplarily, as Figure 11 shown, the assembly method includes the following steps:

[0199] S100: Fix the housing and the electrode assembly respectively.

[0200] Optionally, the bottom cover 30 can be first placed on the carrying mechanism 300, and then the electrode assembly 20 can be placed on the bottom cover 30, so that the electrode assembly 20 and the bottom cover 30 are stacked in sequence in the preset assembly direction, and the pole ear part 21 of the electrode assembly 20 faces away from the bottom cover 30. Further, the carrying fixture 320 clamps and fixes the electrode assembly 20 and the bottom cover 30, and the conveying line 310 further conveys the carrying fixture 320, the electrode assembly 20 and the bottom cover 30 together to the shell loading station corresponding to the shell loading mechanism 200.

[0201] The shell loading mechanism 200 can drive the fixing actuator 212 on the first support frame 211 through the first lifting drive mechanism 240 to fix the shell 10, and make the opening end 12 of the shell 10 face the electrode assembly 20 on the carrying mechanism 300 in the preset assembly direction.

[0202] S200: Control the shell to descend relative to the carrying mechanism, so as to sleeved the shell on the electrode assembly through the opening end during the descending process.

[0203] In some embodiments, before controlling the shell 10 to descend relative to the carrying mechanism 300, the steps include: passing through the through hole 14 from one side of the shell 10 into the accommodation cavity 11 to clamp the pole ear part 21.

[0204] In some embodiments, first, the second lifting drive mechanism 250 drives the second support frame 221 of the pole ear guiding mechanism 220 to descend relative to the first support frame 211 in the preset assembly direction, so that the guiding actuator 222 provided on the second support frame 221 can descend relative to the fixing actuator 212 on the first support frame 211, so that the guiding actuator 222 of the pole ear guiding mechanism 220 passes through the through hole 14 from one side of the shell 10 into the accommodation cavity 11 to prepare for guiding the pole ear part 21 to penetrate into the through hole 14.

[0205] Further, in some embodiments, the first lifting drive mechanism 240 drives and controls the shell fixing mechanism 210 and the pole ear guiding mechanism 220 to descend relative to the carrying mechanism 300 in the preset assembly direction, so as to drive the shell 10 to move along the preset assembly direction towards the carrying mechanism 300.

[0206] Then, when the housing fixing mechanism 210 descends relative to the guiding and positioning mechanism 260 to a preset position, the positioning driving mechanism 265 drives at least two guiding plates 2631 to fit together with each other to form a positioning hole 264. During the further descent of the housing 10, its open end 12 abuts against at least two guiding plates 2631 in the guiding and positioning mechanism 260, and the guiding inclined surfaces 2636 on the at least two guiding plates 2631 perform positioning and guiding on the housing 10 assembly, so that the open end 12 of the housing 10 abuts against the bearing surface 2635 to align with the positioning hole 264, and surrounds the positioning hole 264 on the side facing the housing 10.

[0207] Then, in some embodiments, the positioning driving mechanism 265 drives the guiding and positioning mechanism 260, the housing fixing mechanism 210 and the housing 10 to descend along a preset assembly direction to approach the electrode assembly 20. Similarly, during the descent, the guiding inclined surfaces 2636 on the side of the positioning guiding plate 263 facing away from the housing 10 mechanism perform positioning and guiding on the electrode assembly 20, so that the electrode assembly 20 can pass through the positioning hole 264 from the other side of the positioning hole 264 facing away from the housing fixing mechanism 210, and further pass through the open end 12 and penetrate into the accommodation cavity 11, thereby realizing the accurate insertion of the electrode assembly 20 into the housing.

[0208] S300: During the process of the housing being sleeved on the electrode assembly, the guiding pole ear part penetrates out of the accommodation cavity from the through hole.

[0209] In some embodiments, during the process of the housing 10 being sleeved on the electrode assembly 20, the contact pole ear part 21 is contacted, and the guiding pole ear part 21 penetrates out of the accommodation cavity 11 from the through hole 14. Optionally, this step may include the following steps S311 - S312:

[0210] S311: In the first stage, the contact pole ear part is contacted in the accommodation cavity.

[0211] Optionally, during the process of the housing 10 being sleeved on the electrode assembly 20, when the pole ear part guiding mechanism 220 moves relative to the contact pole ear part 21 to a position, the housing fixing mechanism 210 and the pole ear part guiding mechanism 220 stop descending, and the pole ear part guiding mechanism 220 moves to contact and clamp the pole ear part 21.

[0212] In some embodiments, after the pole ear part guiding mechanism 220 moves to contact and clamp the pole ear part 21, the positioning driving mechanism 265 drives at least two guiding plates 2631 to separate from each other in the vertical direction of the preset assembly direction to move away from the housing 10, so as to remove the stop of the bearing surface 2635 on the open end 12, so that the housing fixing mechanism 210 can further sleeve the housing 10 on the electrode assembly 20.

[0213] Optionally, after the ear guiding mechanism 220 moves to contact and hold the ear 21, the clamp driving mechanism 330 can drive the carrier clamp 320 to switch to the unloading state, so that the carrier clamp 320 moves away from the electrode assembly 20 and the bottom cover 30, avoiding the housing 10 driving and fixing mechanism and the housing 10, so that the subsequent housing 10 can be completely sleeved on the electrode assembly 20, and its open end 12 can smoothly abut against the bottom cover 30.

[0214] S312: In the second stage, control the housing to descend relative to the ear, so that the ear guiding mechanism guides the ear to pass out of the accommodation cavity through the through hole.

[0215] Optionally, the first lifting drive mechanism 240 drives the first support frame 211 to drive the housing fixing mechanism 210 to descend relative to the ear guiding mechanism 220 and the ear 21 along the preset assembly direction, so that the housing 10 can descend relative to the ear guiding mechanism 220 and the ear 21 along the preset assembly direction, so that the ear guiding mechanism 220 guides the ear 21 to pass out of the accommodation cavity 11 through the through hole 14, and the housing 10 is smoothly sleeved on the electrode assembly 20, and its open end 12 can smoothly abut against the bottom cover 30, so as to complete the process of inserting the electrode assembly 20 into the housing.

[0216] Through the above settings, after the ear guiding mechanism 220 can contact the ear 21 in the accommodation cavity 11, the housing fixing mechanism 210 further descends relative to the ear guiding mechanism 220 along the preset assembly direction, so that the ear guiding mechanism 220 can be stationary relative to the ear 21 in the second stage. At this time, when the housing fixing mechanism 210 further drives the housing 10 to descend along the preset assembly direction, the ear guiding mechanism 220 can guide the ear 21 to pass out of the accommodation cavity 11 through the through hole 14, so that the ear 21 is not likely to contact the housing 10 in the second stage to block the housing 10 from being sleeved on the electrode assembly 20 or cause the ear 21 to be bent and deformed, etc., which can improve the efficiency of inserting the electrode assembly 20 into the housing, thereby improving the yield rate of the battery 1.

[0217] In some embodiments, the assembly method further includes step S400:

[0218] S400: Weld the ear and the pole column.

[0219] Optionally, after successfully sleeving the housing 10 outside the electrode assembly 20, the ear 21 passes out of the accommodation cavity 11 through the through hole and faces the pole column 15 in the through hole 14. At this time, the ear 21 is welded to the pole column 15, so that the ear 21 and the pole column 15 are electrically connected, and can form a current loop together with the electrode assembly 20, so that the electrode assembly 20 can be connected to the outside through the pole column 15 and the ear 21 and realize the charge and discharge function.

[0220] Moreover, by welding the tab portion 21 of the electrode assembly 20 to the terminal post 15 on the housing 10, the reliability and stability of the connection between the tab portion 21 and the terminal post 15 can be ensured.

[0221] In some embodiments, as Figure 1 shown, the battery 1 may further include a terminal post cover plate 40. The assembly method further includes step S500:

[0222] S500: Weld the terminal post cover plate to the terminal post to close the through hole.

[0223] Optionally, after welding the tab portion 21 to the terminal post 15, a terminal post cover plate 40 may be provided on the side of the terminal post 15 away from the housing 10, and the terminal post cover plate 40 is welded to the terminal post 15 so that the terminal post cover plate 40 can close the through hole 14 and, together with the housing 10, enclose the accommodation cavity 11 to form a sealed space. Such an arrangement makes it difficult for external impurities, water droplets and other substances to enter the accommodation cavity 11 of the battery through the through hole 14, and also makes it difficult for the material elements in the accommodation cavity 11 to leak out to the outside through the through hole 14.

[0224] Moreover, the arrangement of welding the terminal post cover plate 40 to the terminal post 15 enables the terminal post cover plate 40 to be connected to the tab portion 21 through the terminal post 15, so that the energy of the electrode assembly 20 can be transmitted to the outside of the battery 1 through the terminal post 15 and the terminal post cover plate 40 with a larger area, thereby improving the charging and discharging efficiency of the battery 1.

[0225] In a first aspect, as Figures 1 to 10As shown, the present application provides a casing device 2 for a battery 1. The casing 10 may have an open end 12, a pole post 15 may be provided on the wall of the casing 10 opposite to the open end 12, the pole post 15 may have a through hole 14, and the casing 10 and the bottom cover 30 may be connected to form a receiving cavity 11 communicating with the through hole 14. The active material coating portion of the electrode assembly 20 may be disposed inside the casing 10, and the pole ear portion 21 of the electrode assembly 20 passes through the through hole 14 and is connected to the side of the pole post 15 facing away from the receiving cavity 11. The casing device 2 includes a frame 230, a casing mechanism 200, and a carrying mechanism 300. The carrying mechanism 300 may be disposed on the frame 230 and is used for carrying the bottom cover 30 and supporting the electrode assembly 20 above the bottom cover 30. The casing mechanism 200 may be disposed on the frame 230 and may include a casing fixing mechanism 210 and a pole ear guiding mechanism 220. The casing fixing mechanism 210 is used for fixing the casing 10, and both the pole ear guiding mechanism 220 and the casing fixing mechanism 210 can approach or move away from the carrying mechanism 300. Among them, the casing fixing mechanism 210 may be configured to be able to sleeved the casing 10 outside the electrode assembly 20 through the open end 12 when moving closer to the carrying mechanism 300. The pole ear guiding mechanism 220 may be configured to guide the pole ear portion 21 to pass out of the receiving cavity 11 through the through hole 14 when the casing 10 is sleeved on the electrode assembly 20.

[0226] Both the pole ear guiding mechanism 220 and the casing fixing mechanism 210 may be disposed above the carrying mechanism 300, and both can rise or fall relative to the carrying mechanism 300.

[0227] The process of sleeving the casing 10 onto the electrode assembly 20 may include a first stage and a second stage arranged in sequence. In the first stage, the casing fixing mechanism 210 and the pole ear guiding mechanism 220 may be arranged to be able to descend together relative to the carrying mechanism 300, so that the pole ear guiding mechanism 220 can contact the pole ear portion 21 inside the receiving cavity 11. In the second stage, the casing fixing mechanism 210 may be arranged to be able to descend relative to the pole ear guiding mechanism 220, so that the pole ear guiding mechanism 220 guides the pole ear portion 21 to pass out of the receiving cavity 11 through the through hole 14. Before the first stage, the pole ear guiding mechanism 220 may be arranged to be able to descend relative to the casing fixing mechanism 210 along a preset assembly direction, penetrate into the receiving cavity 11 through the through hole 14 from one side of the casing 10, and descend together with the casing fixing mechanism 210 relative to the carrying mechanism 300 in the first stage.

[0228] The housing fixing mechanism 210 is slidably disposed on the frame 230 so as to be able to move up or down relative to the frame 230. The tab guiding mechanism 220 is slidably connected to the housing fixing mechanism 210 so as to be able to move up or down relative to the housing fixing mechanism 210. The housing loading mechanism 200 includes a first lifting drive mechanism 240. The housing fixing mechanism 210 includes a first support frame 211 and a fixing actuator 212. The first support frame 211 is slidably disposed on the frame 230. The first lifting drive mechanism 240 is disposed on the frame 230 and is used to drive the first support frame 211 to move up and down relative to the frame 230. The fixing actuator 212 is disposed on the first support frame 211, and the fixing actuator 212 is used to fix the housing 10. The housing loading mechanism 200 includes a second lifting drive mechanism 250. The tab guiding mechanism 220 includes a second support frame 221 and a guiding actuator 222. The second support frame 221 is slidably disposed on the first support frame 211. The second lifting drive mechanism 250 is disposed on the first support frame 211 and is used to drive the second support frame 221 to move up and down relative to the first support frame 211. The guiding actuator 222 is disposed on the second support frame 221, and the guiding actuator 222 is used to contact and guide the tabs 21.

[0229] The housing loading mechanism 200 includes an alignment positioning mechanism 260. The alignment positioning mechanism 260 is slidably disposed on the frame 230 so as to be able to move up and down relative to the frame 230. The housing fixing mechanism 210 is slidably connected to the alignment positioning mechanism 260 so as to be able to move up and down relative to the alignment positioning mechanism 260. The alignment positioning mechanism 260 is used to position and align the housing 10 and the electrode assembly 20 before the housing 10 is sleeved on the electrode assembly 20, and is configured to guide the relative movement between the electrode assembly 20 and the housing 10 when the housing 10 is sleeved on the electrode assembly 20. The housing loading mechanism 200 includes a third lifting drive mechanism 270. The alignment positioning mechanism 260 includes a third support frame 261 and a positioning actuator 262. The third support frame 261 is slidably disposed on the frame 230. The third lifting drive mechanism 270 is disposed on the frame 230 and is used to drive the third support frame 261 to move up and down relative to the frame 230. The positioning actuator 262 is disposed on the third support frame 261. The positioning actuator 262 is used to position and align the housing 10 and the electrode assembly 20, and to guide the relative movement between the electrode assembly 20 and the housing 10.

[0230] The housing mechanism 200 includes a guiding and positioning mechanism 260, and the guiding and positioning mechanism 260 is disposed between the housing fixing mechanism 210 and the carrying mechanism 300. The guiding and positioning mechanism 260 is configured to position and align the housing 10 and the electrode assembly 20 before the housing 10 is sleeved on the electrode assembly 20. The guiding and positioning mechanism 260 is configured to guide the relative movement of the electrode assembly 20 and the housing 10 along a preset assembly direction during the process of the housing 10 being sleeved on the electrode assembly 20. The housing fixing mechanism 210 and the guiding and positioning mechanism 260 are configured to be able to move relative to each other in the preset assembly direction, and the housing fixing mechanism 210 can descend relative to the guiding and positioning mechanism 260, so that the guiding and positioning mechanism 260 positions the housing 10. The housing fixing mechanism 210 and the guiding and positioning mechanism 260 are configured to descend together relative to the carrying mechanism 300 after the guiding and positioning mechanism 260 positions the housing 10, so that the guiding and positioning mechanism 260 positions the electrode assembly 20.

[0231] The guide and positioning mechanism 260 includes a positioning guide plate 263, which is located between the shell fixing mechanism 210 and the bearing mechanism 300. The positioning guide plate 263 is provided with a positioning hole 264 that penetrates along the preset assembly direction. The positioning hole 264 is used to position and align the shell 10 and the electrode assembly 20. The guide and positioning mechanism 260 includes a positioning drive mechanism 265, and the positioning guide plate 263 includes at least two guide plates 2631. The positioning drive mechanism 265 is connected to the at least two guide plates 2631 in a transmission connection so as to drive the at least two guide plates 2631 to be assembled or separated from each other in a vertical direction of the preset assembly direction. The at least two guide plates 2631 are assembled to enclose the positioning hole 264. The positioning drive mechanism 265 is configured to drive the at least two guide plates 2631 to be assembled to each other when the shell fixing mechanism 210 is lowered to a preset position relative to the guide and positioning mechanism 260, so as to position the shell 10 through the positioning hole 264. After being assembled with each other, at least two guide plates 2631 can be lowered together with the shell fixing mechanism 210, so that the electrode assembly 20 can be positioned through the positioning hole 264. Each guide plate 2631 has a partial hole wall for surrounding the positioning hole 264, and the partial hole wall includes a first hole wall section 2632 and a second hole wall section 2633 connected along a preset assembly direction, and the connection between the first hole wall section 2632 and the second hole wall section 2633 forms a bearing edge 2634. When at least two guide plates 2631 are assembled with each other, their bearing edges 2634 are assembled with each other to form a support surface 2635 facing the shell fixing mechanism 210, and the support surface 2635 is used to abut against the open end 12 of the shell 10, so as to position the shell 10. The positioning hole 264 is configured for the electrode assembly 20 to penetrate into the positioning hole 264 from the other side of the at least two guide plates 2631 away from the support surface 2635, so as to position the electrode assembly 20. The positioning drive mechanism 265 is configured to drive at least two guide plates 2631 to separate from each other after the pole ear guide mechanism 220 contacts the pole ear 21, so as to remove the stop of the support surface 2635 on the opening end 12, so that the shell fixing mechanism 210 can further insert the shell 10 into the electrode assembly 20. The two sides of the positioning guide plate 263 are respectively provided with guiding inclined surfaces 2636, and the guiding inclined surfaces 2636 are arranged in a convergent shape in the direction close to the positioning hole 264, so as to guide the opening end 12 and the electrode assembly 20 to move into the positioning hole 264.

[0232] In some embodiments, Figure 10As shown, the bearing mechanism 300 includes a bearing fixture 320 and a fixture driving mechanism 330, and the bearing fixture 320 is connected to the fixture driving mechanism 330. The bearing fixture 320 is used to clamp the electrode assembly 20, and the fixture driving mechanism 330 is used to drive the bearing fixture 320 to switch between a clamping state and an unloading state. The fixture driving mechanism 330 is configured to drive the bearing fixture 320 to switch to an unloading state during the process of inserting the shell 10 into the electrode assembly 20, so as to avoid the shell fixing mechanism 210. The shell fixing mechanism 210 is configured to clamp the shell 10, and the pole ear guide mechanism 220 is configured to clamp the pole ear 21, so as to clamp the pole ear 21 and guide the pole ear 21 to pass through the accommodating cavity 11 from the through hole 14.

[0233] In the second aspect, the present application provides a battery assembly system, which may include the shell insertion device 2 as described above. The battery 1 may include a shell 10, a bottom cover 30 and an electrode assembly 20. The shell 10 has an open end 12, and a pole 15 is arranged on the wall of the shell 10 opposite to the open end 12. The pole 15 has a through hole 14, and the shell 10 and the bottom cover 30 are connected to form a accommodating cavity 11 connected to the through hole 14. The active material coating portion of the electrode assembly 20 is arranged in the shell, and the pole ear portion 21 of the electrode assembly 20 passes through the through hole 14 and is connected to the side of the pole 15 away from the accommodating cavity 11.

[0234] The battery assembly system may include a conveying device and an assembly device, wherein the conveying device is used to convey the structure to be assembled and the carrying mechanism 300 as described above to each station of the assembly device. The stations of the assembly device at least include a pole ear welding device, a pole ear piercing device, a pole column welding device, a bottom cover welding device, and a shell insertion device 2 as described above.

[0235] Among them, the pole ear welding device can be used to weld multiple pole ear sheets of the electrode assembly 20 to form the pole ear 21. The shell insertion device 2 is used to load the electrode assembly 20 into the shell 10 from the open end 12. The pole ear penetration device is used to clamp the pole ear 21 through the through hole 14 when the electrode assembly 20 is loaded into the shell 10. The pole column welding device is used to weld the pole ear 21 passing through the through hole to the side of the pole 15 away from the accommodating cavity 11. The bottom cover welding device is used to weld the bottom cover 30 to the open end 12 of the shell 10.

[0236] Thirdly, Figure 1As shown in the figure, the present application provides an assembly method for a battery 1, where the battery 1 includes a housing 10 and an electrode assembly 20. The housing 10 is provided with a receiving cavity 11 and an open end 12 communicating with the receiving cavity 11. The housing 10 further has a top 13 disposed opposite to the open end 12, and the top 13 is provided with a through hole 14 communicating the receiving cavity 11 with the outside. One end of the electrode assembly 20 is provided with a tab 21. The housing 10 is used to sleeve the electrode assembly 20 through the open end 12, so that the electrode assembly 20 is received in the receiving cavity 11 and the tab 21 penetrates through the through hole 14.

[0237] The assembly method includes: fixing the housing 10 and the electrode assembly 20 respectively; controlling the housing 0 to descend relative to the carrying mechanism 300, so that the housing 10 is sleeved on the electrode assembly 20 through the open end 12 during the descending process; guiding the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14 during the process of sleeving the housing 10 on the electrode assembly 20.

[0238] Before controlling the housing 10 to descend relative to the carrying mechanism 300, it includes: penetrating into the receiving cavity 11 from one side of the housing 10 through the through hole 14. Guiding the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14 includes: contacting the tab 21 during the process of sleeving the housing 10 on the electrode assembly 20, and guiding the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14.

[0239] During the process of sleeving the housing 10 on the electrode assembly 20, contacting the tab 21 and guiding the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14 includes: in the first stage, contacting the tab 21 in the receiving cavity 11; in the second stage, controlling the housing 10 to descend relative to the tab 21, and guiding the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14.

[0240] The assembly method further includes: welding the tab 21 and the terminal post 15.

[0241] The battery 1 may further include a terminal post cover plate 40. The assembly method further includes: welding the terminal post cover plate 40 and the terminal post 15 to seal the through hole 14 with the terminal post cover plate 40.

[0242] In summary, the present application provides a housing fixing mechanism 210 and a tab guiding mechanism 220 on the housing inserting device 2. The housing fixing mechanism 210 can sleeve the housing 10 on the electrode assembly 20 through the open end 12 during the descending process. During the process of sleeving the housing 10 on the electrode assembly 20, the tab guiding mechanism 220 can guide the tab 21 to penetrate out of the receiving cavity 11 from the through hole 14. Such a design enables the tab 21 of the battery 1 to be guided through the through hole 14 when the electrode assembly 20 of the battery 1 is inserted into the housing, so that the tab 21 is not easily blocked when the housing 10 is sleeved on the electrode assembly 20, thereby realizing the accurate insertion of the electrode assembly 20 into the housing, and improving the assembly efficiency and the qualified product rate of the housing inserting device 2.

[0243] The above are only embodiments of the present application, and do not thereby limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present application.

Claims

1. A battery shell insertion device, It is characterized in that The battery comprises a shell, a bottom cover and an electrode assembly; the shell has an open end, a pole is arranged on a wall of the shell opposite to the open end, the pole has a through hole, the shell and the bottom cover are connected to form a receiving cavity communicated with the through hole; the active material coating part of the electrode assembly is arranged in the shell, and the pole ear part of the electrode assembly passes through the through hole and is connected to a side of the pole away from the receiving cavity; The shell insertion device comprises: frame; A bearing mechanism, disposed on the frame, for bearing the bottom cover and the electrode assembly supported above the bottom cover; A shell loading mechanism, arranged on the frame, comprising a shell fixing mechanism and a pole ear guide mechanism, wherein the shell fixing mechanism is used to fix the shell, and both the pole ear guide mechanism and the shell fixing mechanism can be close to or away from the bearing mechanism; Among them, the shell fixing mechanism is configured to be able to sleeve the shell on the outside of the electrode assembly through the open end when moving close to the supporting mechanism; the pole ear guiding mechanism is configured to guide the pole ear to pass through the accommodating cavity from the through hole when the shell is sleeved on the electrode assembly.

2. The shell insertion device according to claim 1, It is characterized in that The pole lug guiding mechanism and the shell fixing mechanism are both arranged above the supporting mechanism, and both can rise or fall relative to the supporting mechanism.

3. The shell insertion device according to claim 2, It is characterized in that The process of inserting the shell into the electrode assembly includes a first stage and a second stage arranged in sequence; in the first stage, the shell fixing mechanism and the pole ear guiding mechanism are arranged to be able to descend together relative to the supporting mechanism, so that the pole ear guiding mechanism can contact the pole ear in the accommodating cavity; in the second stage, the shell fixing mechanism is arranged to be able to descend relative to the pole ear guiding mechanism, so that the pole ear guiding mechanism guides the pole ear to pass through the through hole to pass through the accommodating cavity.

4. The shell insertion device according to claim 3, It is characterized in that Before the first stage, the pole ear guiding mechanism is configured to be able to descend along a preset assembly direction relative to the shell fixing mechanism, and penetrate into the accommodating cavity through the through hole from one side of the shell, and descend relative to the supporting mechanism together with the shell fixing mechanism in the first stage.

5. The shell insertion device according to claim 2, It is characterized in that The shell fixing mechanism is slidably arranged on the frame so as to be able to rise or fall relative to the supporting mechanism, and the pole ear guiding mechanism is slidably connected to the shell fixing mechanism so as to be able to rise or fall relative to the supporting mechanism.

6. The shell insertion device according to claim 5, It is characterized in that The casing mechanism includes a first lifting drive mechanism. The housing fixing mechanism includes a first support frame and a fixing actuator. The first support frame is slidably disposed on the frame. The first lifting drive mechanism is disposed on the frame and is configured to drive the first support frame to lift relative to the frame. The fixing actuator is disposed on the first support frame and is configured to fix the housing. The casing mechanism further includes a second lifting drive mechanism. The tab guiding mechanism includes a second support frame and a guiding actuator. The second support frame is slidably disposed on the first support frame. The second lifting drive mechanism is disposed on the first support frame and is configured to drive the second support frame to lift relative to the first support frame. The guiding actuator is disposed on the second support frame and is configured to contact and guide the tabs.

7. The casing device according to claim 5, wherein, the casing mechanism includes a guiding and positioning mechanism. The guiding and positioning mechanism is slidably disposed on the frame so as to be able to lift relative to the frame. The housing fixing mechanism is slidably connected to the guiding and positioning mechanism so as to be able to lift relative to the guiding and positioning mechanism. The guiding and positioning mechanism is configured to position and align the housing and the electrode assembly before the housing is sleeved on the electrode assembly, and is configured to guide the relative movement between the electrode assembly and the housing when the housing is sleeved on the electrode assembly.

8. The casing device according to claim 7, wherein, the casing mechanism further includes a third lifting drive mechanism. The guiding and positioning mechanism includes a third support frame and a positioning actuator. The third support frame is slidably disposed on the frame. The third lifting drive mechanism is disposed on the frame and is configured to drive the third support frame to lift relative to the frame. The positioning actuator is disposed on the third support frame. The positioning actuator is configured to position and align the housing and the electrode assembly and to guide the relative movement between the electrode assembly and the housing.

9. The casing device according to claim 1, wherein, the casing mechanism includes a guiding and positioning mechanism. The guiding and positioning mechanism is disposed between the housing fixing mechanism and the carrying mechanism. The guiding and positioning mechanism is configured to position and align the housing and the electrode assembly before the housing is sleeved on the electrode assembly.

10. The casing device according to claim 9, wherein, the guiding and positioning mechanism is configured to guide the relative movement between the electrode assembly and the housing along a preset assembly direction during the process of the housing being sleeved on the electrode assembly.

11. The casing device according to claim 10, wherein, the housing fixing mechanism and the guiding and positioning mechanism are configured to be able to move relative to each other in the preset assembly direction. The housing fixing mechanism is capable of descending relative to the guiding and positioning mechanism so that the guiding and positioning mechanism positions the housing. The shell fixing mechanism and the guide positioning mechanism are configured to descend together relative to the supporting mechanism after the guide positioning mechanism positions the shell, so that the guide positioning mechanism positions the electrode assembly.

12. The shell insertion device according to claim 10, It is characterized in that The guiding and positioning mechanism includes a positioning guide plate, which is located between the shell fixing mechanism and the supporting mechanism. The positioning guide plate is provided with a positioning hole that passes through the preset assembly direction, and the positioning hole is used to position and align the shell and the electrode assembly.

13. The shell insertion device according to claim 12, It is characterized in that The guiding and positioning mechanism includes a positioning drive mechanism, and the positioning guide plate includes at least two guide plates. The positioning drive mechanism is transmission-connected to the at least two guide plates so as to be able to drive the at least two guide plates to be assembled or separated from each other in a direction perpendicular to the preset assembly direction. The at least two guide plates are assembled to form the positioning hole.

14. The shell insertion device according to claim 13, It is characterized in that The positioning drive mechanism is configured to drive the at least two guide plates to mate with each other when the shell fixing mechanism descends to a preset position relative to the guide positioning mechanism, so that the shell can be positioned through the positioning hole; after being assembled with each other, the at least two guide plates can descend together with the shell fixing mechanism, so that the electrode assembly can be positioned through the positioning hole.

15. The shell insertion device according to claim 13, It is characterized in that Each of the guide plates has a partial hole wall for surrounding the positioning hole, and the partial hole wall includes a first hole wall section and a first hole wall section connected along the preset assembly direction, and the connection between the first hole wall section and the first hole wall section forms a supporting edge portion; when the at least two guide plates are assembled with each other, the supporting edges are assembled with each other to form a supporting platform surface facing the shell fixing mechanism, and the supporting platform surface is used to abut the open end of the shell to position the shell; the positioning hole is configured to allow the electrode assembly to pass through the positioning hole from the other side of the at least two guide plates away from the supporting platform surface to position the electrode assembly.

16. The shell insertion device according to claim 15, It is characterized in that The positioning drive mechanism is configured to drive the at least two guide plates to separate from each other after the pole ear guiding mechanism contacts the pole ear to evacuate the stopper of the support platform facing the open end, so that the shell fixing mechanism can further insert the shell into the electrode assembly.

17. The shell insertion device according to claim 12, It is characterized in that Guide slopes are respectively arranged on both sides of the positioning guide plate, and the guide slopes are arranged in a convergent shape in a direction close to the positioning hole to guide the opening end and the electrode assembly to move into the positioning hole.

18. The shell insertion device according to claim 1, It is characterized in that The carrying mechanism includes a carrying clamp and a clamp driving mechanism, and the clamp driving mechanism is connected to the carrying clamp; the carrying clamp is used to clamp the electrode assembly, and the clamp driving mechanism is used to drive the carrying clamp to switch between a clamping state and an unloading state; the clamp driving mechanism is configured to drive the carrying clamp to switch to the unloading state during the process of the shell being inserted into the electrode assembly to avoid the shell fixing mechanism.

19. The shell insertion device according to any one of claims 1 to 18, It is characterized in that The shell fixing mechanism is configured to clamp the shell, and the pole ear guiding mechanism is configured to clamp the pole ear, so as to clamp the pole ear and guide the pole ear to pass through the accommodating cavity from the through hole.

20. A battery assembly system, It is characterized in that include: The shell insertion device according to any one of claims 1 to 19.

21. The battery assembly system according to claim 20, Features: The battery assembly system further includes a conveying device and an assembly device, wherein the conveying device is used to convey the structure to be assembled to each station of the assembly device; the station of the assembly device includes the shell insertion device, and at least also includes a pole ear welding device, a pole ear piercing device, a pole column welding device and a bottom cover welding device; Among them, the pole ear welding device is used to weld multiple pole ears of the electrode assembly to form a pole ear; the shell insertion device is used to load the electrode assembly into the shell from the open end; the pole ear penetration device is used to clamp the pole ear and pass it through the through hole when the electrode assembly is loaded into the shell; the pole column welding device is used to weld the pole ear passing through the through hole to the side of the pole away from the accommodating cavity; the bottom cover welding device is used to weld the bottom cover to the open end of the shell.

22. A method for assembling a battery, It is characterized in that The battery comprises a shell and an electrode assembly; the shell has an open end, a pole is arranged on a wall of the shell opposite to the open end, the pole has a through hole, the shell and the bottom cover are connected to form a receiving cavity connected to the through hole; the active material coating part of the electrode assembly is arranged in the shell, and the pole ear part of the electrode assembly passes through the through hole and is connected to a side of the pole away from the receiving cavity; the assembly method comprises: respectively fixing the housing and the electrode assembly; Controlling the shell to descend relative to the electrode assembly so that the shell is inserted into the electrode assembly through the open end during the descending process; When the shell is inserted into the electrode assembly, the electrode ear is guided to pass through the through hole and out of the accommodating cavity.

23. The assembly method according to claim 22, It is characterized in that Before controlling the housing to descend relative to the electrode assembly, the method further comprises: From one side of the shell, penetrate into the accommodating cavity through the through hole to clamp the pole ear portion; The step of guiding the pole ear portion to pass through the accommodating cavity from the through hole comprises: During the process of sleeving the housing onto the electrode assembly, contact the tab ear part and guide the tab ear part to pass through the through hole and out of the accommodation cavity.

24. The assembly method according to claim 23, wherein, the step of, during the process of sleeving the housing onto the electrode assembly, contacting the tab ear part and guiding the tab ear part to pass through the through hole and out of the accommodation cavity, includes: In the first stage, contact the tab ear part within the accommodation cavity; In the second stage, control the housing to descend relative to the tab ear part and guide the tab ear part to pass through the through hole and out of the accommodation cavity.

25. The assembly method according to claim 24, wherein, the assembly method further includes: welding the tab ear part and the pole column.

26. The assembly method according to claim 25, wherein, the battery further includes a pole column cover plate; the assembly method further includes: welding the pole column cover plate to the pole column to seal the through hole with the pole column cover plate.

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