Shell clamp and tool for assembling battery cell into shell

Abstract

The utility model relates to the technical field of battery cell shell entering, and discloses a shell clamp and a battery cell shell entering tool, the shell clamp comprises at least two fixing parts, each fixing part is provided with a limiting edge and an inner surface, the fixing parts can move in the preset direction under the driving effect, and when the fixing parts move to the preset positions, the limiting edges are located on the inner surfaces of the fixing parts. The fixing parts abut against each other through the limiting edges of the fixing parts, so that further displacement of the fixing parts is prevented, the fixing parts can be prevented from being excessively pushed through a simple structure, operation is simpler, and the integration degree is high; meanwhile, the inner surfaces of the fixing parts jointly define a clamping area, and the outline of the clamping area corresponds to the battery cell shell, so that the battery cell shell can be limited and fixed by driving the fixing parts, the battery cell shell is prevented from being dislocated or deviated in the process that the battery cell enters the shell, the surface of the battery cell shell is not easy to crush, and the service life of the battery cell shell is prolonged. And the reliability of the battery cell entering the shell is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cell housing, and further relates to a shell clamp and a cell housing tool. BACKGROUND

[0002] At present, when guiding the cell into the cell shell, the cell shell needs to be fixed to prevent the cell shell from deviating and causing incorrect placement of the cell. The current design of some cell shell fixing clamps is unreasonable, and over-pushing phenomenon is prone to occur when the fixed part pushes the cell shell, which causes the cell shell to be concave, and further causes the concave cell shell to collide with the cell, thereby affecting the structural integrity and functionality of the cell.

[0003] In summary, the current technology needs to be improved. SUMMARY

[0004] In view of the above technical problems, the purpose of the present application is to provide a shell clamp and a cell housing tool, which can prevent over-pushing phenomenon when the cell shell is fixed and limited, and can improve the yield of the cell.

[0005] In order to achieve the above purpose, the present application provides a shell clamp, comprising:

[0006] At least two fixed parts, each of which has an inner surface and a limiting edge;

[0007] The fixed part is configured to be movable in a predetermined direction, and when the fixed part moves to a predetermined position, the limiting edge of each fixed part abuts against the corresponding limiting edge of the adjacent fixed part to stop the further movement of the fixed part.

[0008] Wherein, the inner surfaces of the fixed parts collectively form a clamping area suitable for the cell shell when the fixed parts are pushed to the predetermined position, for limiting and fixing the cell shell.

[0009] In some embodiments, each fixed part has two limiting edges, which are respectively located at the starting end and the ending end of the fixed part, and are distinguished as starting edge and ending edge; when the cell shell is limited and fixed, the starting edge of each fixed part abuts against the ending edge of the adjacent fixed part and forms a limiting group.

[0010] In some embodiments, the fixing part comprises a fixing plate, the fixing plate is distinguished by a wide face and a narrow face of the battery cell shell as a fixing long plate and a fixing short plate, at least one fixing long plate or one fixing short plate is provided in each fixing part; wherein, when the battery cell shell is fixed, the starting edge of the fixing long plate is butted against the ending edge of the fixing short plate, or the ending edge of the fixing long plate is butted against the starting edge of the fixing short plate.

[0011] In some embodiments, the number of the fixing part is four, and wherein two fixing parts are each provided with one fixing long plate, and the remaining two fixing parts are each provided with one fixing short plate; two fixing long plates and two fixing short plates are simultaneously or in a preset sequence displaced towards or away from the battery cell shell under the drive to form the fixing or release of the battery cell shell.

[0012] In some embodiments, the cross-sectional shape of the fixing plate is isosceles trapezoidal, and the slope of the isosceles trapezoid corresponds to the limiting edge of the fixing plate, and the short base of the isosceles trapezoid corresponds to the inner surface of the fixing plate, when all the fixing long plates and the fixing short plates collectively form the fixing of the battery cell shell, the slopes between the isosceles trapezoids are fitted and collectively form a rectangular contour.

[0013] In some embodiments, the fixing part comprises at least one of the following fixing structures:

[0014] The first fixing structure comprises one fixing long plate and one fixing short plate connected to each other to collectively form an L-shaped plate;

[0015] The second fixing structure comprises one fixing long plate and two fixing short plates connected to each other, and the two fixing short plates are respectively located at both ends of the fixing long plate to collectively form a C-shaped plate;

[0016] The third fixing structure comprises one fixing short plate and two fixing long plates connected to each other, and the two fixing long plates are respectively located at both ends of the fixing short plate to collectively form a C-shaped plate.

[0017] In some embodiments, the projection of the limiting edge contour in the vertical plane is in any one of a straight line, a broken line, and a curve; in one limiting group, the contour shape of the starting edge is correspondingly arranged with the contour shape of the ending edge.

[0018] In some embodiments, the side of each fixing part away from the inner surface is provided with a driving device for controlling the movement of the fixing part.

[0019] In some embodiments, the projection profile of the clamping region on a vertical plane is in any one of a circle, an ellipse, and a polygon.

[0020] Another aspect of the present application also provides an electric cell housing tool, comprising:

[0021] The housing clamp described above is used to fix the electric cell housing;

[0022] The electric cell mounting mechanism is used to load the electric cell and mount the electric cell into the electric cell housing.

[0023] Compared with the prior art, the housing clamp and the electric cell housing tool provided by the present application have the following advantages

[0024] Beneficial effects:

[0025] 1. In the present application, the fixing parts have limiting edges, so that when several fixing parts move towards the electric cell housing to clamp and fix it, the limiting edges abut against each other in place to prevent the fixing parts from further moving, thereby achieving automatic stopping of the housing clamp and ensuring the quality of the electric cell housing and the efficiency of the electric cell housing.

[0026] 2. In the present application, the fixed long plate and the fixed short plate have multiple different combination use modes to form different shapes and profiles of the fixing structure, which can meet the needs of the working scene; and the inner surface profile of the fixed plate can be adjusted to adapt to electric cell housings of different shapes, so that the adaptability of the housing clamp is higher. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above features, technical characteristics, advantages and implementation modes of the present application will be further described in the following preferred embodiments in a clear and understandable manner combined with the drawings.

[0028] Figure 1 is the overall structure schematic diagram in an embodiment of the present application;

[0029] Figure 2 is the overall structure schematic diagram of another embodiment of the present application.

[0030] Explanation of reference numerals: fixing part 1; limiting edge 10; inner surface 11; driving device 2; clamping region 3; fixed long plate 4; fixed short plate 5. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described in the following with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0032] For simplicity and brevity of the drawings, only the parts related to the application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one" situation.

[0033] It should be further understood that the term "and / or" used in the specification and the appended claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0034] In this document, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present application.

[0036] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] Firstly, it can be understood that in the current battery assembly process, it is crucial to ensure that the battery cell is correctly loaded into the battery cell shell and to prevent damage to the battery cell shell during the pushing process. However, the existing tooling has some problems in terms of fixation and limiting. First of all, the design of the clamp may not be stable enough, resulting in the displacement of the battery cell shell during the pushing process. In addition, the precision and reliability of the clamp may not be sufficient, sometimes causing the pushing distance to exceed the expected value, causing damage to the battery cell shell.

[0038] To solve the above problems, some existing tooling sets are provided with a clamp, a pushing mechanism and a limiting device. The clamp is used to fix the shell of the battery cell, the pushing mechanism is used to push the battery cell into the shell, and the limiting device is used to stop the pushing action after reaching a predetermined pushing distance, so as to avoid over-pushing causing deformation of the shell or damage to the battery cell.

[0039] However, although the existing tooling includes a clamp and a limiting device, these components are often designed separately. The clamp is responsible for fixing the aluminum shell, and the limiting device is independent of the clamp and is used to control the distance of the battery cell pushing. This separate design may cause several problems. First, more operation steps may be required in the assembly process to adjust and calibrate the limiting device, increasing the operation complexity. Second, the separate limiting device may not be accurate enough to adapt to battery cell shells of different sizes, or may produce errors in continuous operation.

[0040] Based on the above problems in the prior art, please refer to the drawings attached to the specification Figure 1 A shell clamp provided in the present application is described, the clamp of the battery cell shell and the limiting structure are integrated and designed, which automatically limits and stops during clamping the battery cell shell, simplifying the operation steps under the premise of avoiding over-pushing.

[0041] Please refer to the drawings attached to the specification Figure 1 The shell clamp provided in the present application includes at least two fixed parts 1, each fixed part 1 has an inner surface 11 and a limiting edge 10.

[0042] The fixed part 1 is configured to be movable along a predetermined direction, and when the fixed part 1 moves to a predetermined position, the limiting edge 10 of each fixed part 1 abuts against the corresponding limiting edge 10 of the adjacent fixed part 1 to stop the further movement of the fixed part 1.

[0043] Among them, the inner surfaces 11 of the fixed parts 1 collectively form a clamping area 3 adapted to the shell of the battery cell when the fixed parts 1 are pushed to the predetermined position, for limiting and fixing the shell of the battery cell.

[0044] It should be noted that each fixed part 1 is provided with a driving device 2 away from the inner surface 11, for controlling the movement of the fixed part 1. Such driving device 2 is not specifically limited in the embodiment, it can use common devices such as push-pull cylinder, electric push rod, etc., as long as it can ensure the push-pull of the fixed part 1. The driving device 2 drives the fixed part 1 to approach or move away from the battery cell shell, and the above-mentioned preset direction is the direction of the corresponding fixed part 1 towards the battery cell shell when the battery cell shell needs to be clamped, and is the direction of the fixed part 1 away from the battery cell shell when the battery cell shell needs to be released. Because the fixation of the battery cell shell needs to be connected to several surfaces at the same time, such as front-to-back or left-to-right, the preset direction of different fixed parts 1 is also different, which is easy to understand and will not be described here.

[0045] In addition, the specific shape, structure, material, etc. of the fixed part 1 in the embodiment are not specifically limited, it can be a straight plate type or have a certain arc, and it can also be deformed by a certain operation, as long as such changes are acceptable under the premise of not affecting the technical effects of the embodiment.

[0046] Based on the above, the outline of the clamping area 3 can also be any one of a circle, an ellipse, and a polygon, that is, the outline of the battery cell shell and the outline of the clamping area 3 are adapted. Of course, the outline of the battery cell shell can be more than the above-mentioned several kinds, and the shape of the fixed part 1 can be adjusted to fix battery cell shells with different outlines. In addition, the outline of the polygon also includes many kinds, according to the design of some specific types of battery cells, it can be a regular polygon, a trapezoid, a rectangle, etc. Although the clamping area 3 with these outlines is not shown in the drawings, such simple changes should also be included in the protection scope of the present application.

[0047] In the embodiment, the above-mentioned preset position is the position of each fixed part 1 when it is pushed to the position, and the limiting edge 10 provided on the fixed part 1 plays a key role in the automatic stop and anti-over-pushing effect of the shell clamp. The fixed part 1 moves in the direction of the battery cell shell under the action of the driving force until the adjacent limiting edges 10 abut each other. Due to the limiting effect of the limiting edge 10, the fixed part 1 cannot further displace.

[0048] By the above-mentioned manner, the inner surface 11 of each fixed part 1 forms a clamping area 3, which is used for limiting and fixing the battery cell shell, ensuring that the battery cell shell maintains the correct position and direction relative to the shell clamp. Based on the above, it can be seen that the shell clamp provided in the embodiment can effectively fix the battery cell shell, avoiding faults caused by position deviation during assembly. Through the cooperation of the limiting edge 10 and the inner surface 11 of the fixed part 1, the battery cell shell is accurately positioned in the clamp, ensuring the accuracy and quality of the battery assembly.

[0049] In one embodiment, each fixed part 1 has two limiting edges 10, which are respectively located at the starting end and the ending end of the fixed part 1, and are distinguished as starting edge and ending edge.

[0050] When the battery cell shell is fixed and limited, the starting edge of each fixed part 1 abuts against the ending edge of the adjacent fixed part 1, and forms a limiting group together, in which the profile shape of the starting edge is correspondingly arranged with the profile shape of the ending edge. According to the design of the number of fixed parts 1, multiple limiting groups can be generated, and the mechanical fixation relative to the battery cell shell is greatly improved through the abutment of the starting edge and the ending edge in the multiple limiting groups, which ensures the stability and consistency of the battery cell shell in the shell clamp.

[0051] In addition, in the embodiment, the limiting edges 10 are arranged at the starting end and the ending end of the fixed part 1, and the positions of the starting end and the ending end are fixed and will not change with movement, which helps to improve the positioning accuracy. It can be understood that due to the fixed starting end and ending end, the shell clamp can repeat the same limiting process in each operation, improving production efficiency and product quality.

[0052] On the basis of the above embodiment, in one embodiment, a length adjusting mechanism is arranged on the fixed part 1, so that the shell clamp can adapt to battery cell shells of different sizes. The length adjusting mechanism can be selected in many ways, for example, the fixed part 1 is divided into multiple movable segments, the segments are connected through elastic connectors or sliding rails, a control mechanism is connected on the segments to control the displacement of the segments in the length direction of the fixed part 1, and the control mechanism is stopped when the length of the fixed part 1 reaches the preset value, then the length of the fixed part 1 can be adjusted. According to the actual situation, a locking mechanism can also be arranged to ensure that each segment is located at the correct position and prevent the segments from being offset due to machine vibration during work.

[0053] In another embodiment, the fixed part 1 includes a fixed plate, which is distinguished as a fixed long plate 4 and a fixed short plate 5 by the wide surface and the narrow surface of the battery cell shell, and at least one fixed long plate 4 or one fixed short plate 5 is arranged in each fixed part 1.

[0054] In which, when the battery cell shell is fixed and limited, the starting edge of the fixed long plate 4 abuts against the ending edge of the fixed short plate 5, or the ending edge of the fixed long plate 4 abuts against the starting edge of the fixed short plate 5.

[0055] In the present embodiment, the design of the fixed long plate 4 and the fixed short plate 5 in the fixed part 1 is based on the geometry of the cell housing. The cell housing usually has a set of wider faces (wide faces) and a set of narrower faces (narrow faces), and the design of these plates is just to correspond to the wide faces and narrow faces of the cell housing, so as to achieve accurate clamping.

[0056] When the cell housing is clamped by the housing clamp, the fixed long plate 4 and the fixed short plate 5 correspond to the wide faces and narrow faces of the cell housing respectively, providing a stable support surface. In this way, the cell housing is accurately positioned in the housing clamp, avoiding positional deviation and damage during assembly. By using the fixed long plate 4 and the fixed short plate 5 together, not only a stable clamping force is provided, but also the vibration and displacement of the cell housing during assembly are reduced.

[0057] Of course, in other embodiments, the fixed long plate 4 and the fixed short plate 5 can be further segmented, and multiple plates can correspond to a wide face or a narrow face of the cell housing.

[0058] In existing assembly technology of cells and cell housings, the fixation of the cell housing often relies on complex mechanical devices or manual operation, which not only is inefficient, but also is difficult to ensure the accurate position of the cell housing. The design of the fixed part 1 in the present embodiment achieves fast and accurate fixation of the cell housing by using simple fixed long plate 4 and fixed short plate 5.

[0059] In another embodiment, the number of fixed parts 1 is four, and each of two fixed parts 1 is provided with a fixed long plate 4, and each of the other two fixed parts 1 is provided with a fixed short plate 5.

[0060] The two fixed long plates 4 and the two fixed short plates 5 are driven to move towards or away from the cell housing simultaneously or in a predetermined sequence to form fixation or release of the cell housing.

[0061] Please refer to the drawings in the specification, in the present embodiment, the fixed long plate 4 and the fixed short plate 5 correspond to the two wide faces and the two narrow faces of the cell housing respectively, ensuring that the cell housing will not move laterally or tilt during assembly, thereby improving the accuracy and safety of the subsequent assembly process of the cell. Moreover, this design can be adapted to most cells, as most cells have obvious wide faces and narrow faces, making the adaptability of this housing clamp very high.

[0062] In the present embodiment, the simultaneous or predetermined sequence driving mode needs to be selected according to the actual needs of the factory or user. When the synchronous driving mode is adopted, the four fixed plates move simultaneously, quickly completing the clamping and fixation of the cell housing. Simultaneous driving reduces the risk of errors by operators and improves the accuracy of operation.

[0063] The driving mode along the preset sequence has many ways, which can reduce the vibration and displacement of the battery shell caused by the driving device 2 during assembly, improve the stability and safety of assembly, generally adopt a group of opposite edges driving first, another group of opposite edges driving later, for example, driving the narrow side first, that is, driving the two fixed short plates 5 first, and then driving the two fixed long plates 4, and when reaching the preset position, the limiting edge 10 on the fixed long plate 4 abuts against the limiting edge 10 on the fixed short plate 5 on both sides, so as to achieve stopping; if four fixed plates are sequentially moved to the preset position, it may be more time-consuming and not conducive to improving production efficiency.

[0064] In an embodiment, the cross-sectional shape of the fixed plate is isosceles trapezoidal, and the slope of the isosceles trapezoid corresponds to the limiting edge 10 of the fixed plate, and the short base of the isosceles trapezoid corresponds to the inner surface 11 of the fixed plate. When all the fixed long plates 4 and the fixed short plates 5 collectively fix the battery shell, the slopes between the isosceles trapezoids abut and collectively form a rectangular contour.

[0065] Referring to the drawings, the fixed plate in the embodiment adopts an isosceles trapezoidal cross-sectional shape, which is not only beautiful and elegant, but also has good deformation resistance due to the long side, the short side and the two waist sides in its structure, so that it can better disperse energy when impacted or vibrated and reduce the possibility of deformation of the fixed plate; in addition, when the fixed plate is pushed and pulled, the difference between the long base and the short base of the isosceles trapezoid can also be used to ensure the correct pushing direction and position to avoid manual misoperation.

[0066] In an embodiment, on the basis of the above embodiment, the fixed part 1 is used by the combination of the fixed long plate 4 and the fixed short plate 5, and different combinations form different fixed structures.

[0067] The first fixed structure includes one fixed long plate 4 and one fixed short plate 5 connected together, which is not shown in the drawings but is well understood as two plates collectively forming an L-shaped plate, and for fixing the battery shell, two first fixed structures, that is, two L-shaped plates, can be directly used to form a closed clamping area 3, and the driving device 2 only needs to use two, such as being connected to the two fixed long plates 4, so that when the L-shaped plate is pushed, the fixed long plate 4 can drive the fixed short plate 5 connected thereto to move, achieving the effect of simplifying the structure and saving energy.

[0068] In addition, one L-shaped plate and one fixed long plate 4 and one fixed short plate 5 can also be used to limit and fix the battery shell, for example, the L-shaped plate first abuts against two faces of the battery shell, and then the fixed long plate 4 and the fixed short plate 5 are pushed, achieving step-by-step stable clamping in this way.

[0069] In addition, there are a second fixing structure and a third fixing structure similar thereto. The second fixing structure comprises a fixed long plate 4 and two fixed short plates 5 connected to each other, and the two fixed short plates 5 are respectively located at both ends of the fixed long plate 4, and the three plates together form a C-shaped plate. Similarly, the third fixing structure comprises a fixed short plate 5 and two fixed long plates 4 connected to each other, and the two fixed long plates 4 are respectively located at both ends of the fixed short plate 5, and also can form a C-shaped plate. In specific use, one C-shaped plate can be matched with one ordinary fixed long plate 4 or fixed short plate 5, and the C-shaped plate is used to wrap the outer periphery of the cell shell, and then the fixed long plate 4 or fixed short plate 5 is used to close this area, and the C-shaped plate and the fixed long plate 4 or fixed short plate 5 together form clamping.

[0070] In one embodiment, the projection of the contour of the limiting edge 10 in the vertical plane is linear or zigzag or curved.

[0071] In the accompanying drawings Figure 1 A linear contour is shown in the accompanying drawings Figure 2 A zigzag contour is shown in the accompanying drawings, and the fixed plate uses a design similar to a T-shaped plate. The complementary design of the concave-convex parts between the plates when they are docked can make the connection more firm. In addition, the turning angle of the zigzag in the drawings is ninety degrees, which ensures the accurate alignment between the fixed plates. In addition, the contact area of the concave-convex interface is large, which can disperse the clamping force and reduce the damage to the surface of the cell shell, thereby protecting the integrity and appearance of the cell shell.

[0072] The curved contour described above is not shown in the drawings, but it can be understood that the use of a curved design can increase the overall structural strength of the shell clamp to some extent. In addition, since the edge is curved, the contact area can be increased to provide better friction, thereby preventing the shell clamp from sliding and ensuring stability during assembly.

[0073] Optionally, the inner surface 11 of each fixing part 1 is provided with an anti-skid layer.

[0074] The anti-skid layer partially or entirely covers the inner surface 11 and is attached to the surface of the cell shell when the cell shell is fixed, for preventing the cell shell from shifting or falling off.

[0075] In one embodiment, according to another aspect of the present application, the present application further provides an electric cell shell loading tool, which comprises the shell clamp described above and an electric cell mounting mechanism. After the shell clamp fixes and limits the electric cell shell, the electric cell mounting mechanism can load the electric cell and load the electric cell into the limited electric cell shell.

[0076] Generally, the battery cell mounting mechanism includes one or more mechanical arms responsible for grabbing the battery cell and accurately placing it into the battery cell case fixed by the case clamp, and through the connection with the automatic control system, the accurate installation of the battery cell and the efficient assembly line operation are realized, which can improve the automation degree of battery production.

[0077] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the application, and it should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the application, a number of improvements and refinements can be made, which should be considered as the protection scope of the application.

Claims

1. A housing clamp characterized by, The shell clamp comprises: at least two fixing parts, each of which has an inner surface and a limiting edge; the fixing parts are configured to be movable in a preset direction, and when the fixing parts move to a preset position, the limiting edge of each of the fixing parts abuts against the corresponding limiting edge of the adjacent fixing part to stop further movement of the fixing parts; wherein the inner surfaces of the fixing parts collectively form a clamping area suitable for the shell of the battery cell when the fixing parts are pushed to the preset position, for limiting and fixing the shell of the battery cell; each of the fixing parts has two limiting edges, which are respectively located at the starting end and the ending end of the fixing part, and are distinguished as starting edge and ending edge; when the shell of the battery cell is limited and fixed, the starting edge of each of the fixing parts abuts against the ending edge of the adjacent fixing part and collectively forms a limiting group.

2. The shell clamp according to claim 1, wherein: the fixing parts include fixing plates, which are distinguished as fixing long plates and fixing short plates by the wide face and the narrow face of the shell of the battery cell, and at least one of the fixing long plates or the fixing short plates is provided in each of the fixing parts; wherein, when the shell of the battery cell is limited and fixed, the starting edge of the fixing long plate abuts against the ending edge of the fixing short plate, or the ending edge of the fixing long plate abuts against the starting edge of the fixing short plate.

3. The shell clamp according to claim 2, wherein: the number of the fixing parts is four, and two of the fixing parts are respectively provided with one of the fixing long plates, and the remaining two of the fixing parts are respectively provided with one of the fixing short plates; two of the fixing long plates and two of the fixing short plates are simultaneously or in a preset sequence displaced towards or away from the shell of the battery cell under the drive to form the fixing or release of the shell of the battery cell.

4. The shell clamp according to claim 3, wherein: the cross-sectional shape of the fixing plates is isosceles trapezoid, and the slope of the isosceles trapezoid corresponds to the limiting edge of the fixing plate, and the short base of the isosceles trapezoid corresponds to the inner surface of the fixing plate, when all of the fixing long plates and the fixing short plates collectively form the fixing of the shell of the battery cell, the slopes of the isosceles trapezoids are fitted and collectively form a rectangular contour.

5. The housing clamp of claim 2, wherein, the fixing parts include at least one of the following fixing structures: a first fixing structure, comprising one of the fixing long plates and one of the fixing short plates connected to each other to collectively form an L-shaped plate; a second fixing structure, comprising one of the fixing long plates and two of the fixing short plates connected to each other, and the two of the fixing short plates are respectively located at the two ends of the fixing long plate to collectively form a C-shaped plate; a third fixing structure, comprising one of the fixing short plates and two of the fixing long plates connected to each other, and the two of the fixing long plates are respectively located at the two ends of the fixing short plate to collectively form a C-shaped plate.

6. The shell clamp according to any one of claims 1-5, wherein: The projection of the limiting edge in a vertical plane is in any one of a straight line, a broken line, and a curve. In one of the limiting groups, the profile shape of the starting edge is arranged in correspondence with the profile shape of the ending edge.

7. The shell clamp of claim 1, wherein, Each of the fixing portions is provided with driving devices on the side away from the inner surface, for controlling the movement of the fixing portions.

8. The shell clamp of claim 1, wherein, The projection of the clamping area in a vertical plane is in any one of a circle, an ellipse, and a polygon.

9. An electrochemical cell-in-can tooling, characterized by, Comprising: The shell clamp of any one of claims 1-8, for fixing an electric cell shell; An electric cell mounting mechanism for loading an electric cell and loading the electric cell into the electric cell shell.

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