Battery cell air bag shaping device

Abstract

The utility model provides a kind of electric core air bag shaping device, belong to production equipment technical field, comprising: electric core positioning part;Air bag clamping unit is set on electric core positioning part, including clamping drive part and the symmetry of the length direction of electric core positioning part Two groups of clamping pieces, clamping drive part is driven to be connected with clamping piece, every group of clamping piece includes two first clamping parts oppositely arranged, two first clamping parts in every group can be relatively close or far away;Edge clamping unit, it includes the second clamping part being set on first clamping part, second clamping part moves synchronously with first clamping part;Stretching drive part, it is set on electric core positioning part, for adjusting the relative distance between clamping piece.Optical advantage is controllable axial tension that can be applied to the air bag that has been clamped by adjusting the relative distance between two groups of clamping pieces;The stretching force can actively tighten air bag before or during the process of pumping, offset the irregular shrinkage trend of aluminum plastic film due to internal negative pressure.

Description

Technical Field

[0001] This utility model belongs to the field of production equipment technology, and in particular relates to a battery cell air bag shaping device. Background Technology

[0002] In the manufacturing process of pouch lithium-ion batteries, cell encapsulation is a crucial step to ensure their safety, sealing performance, and cycle life. Pouch cells typically use an aluminum-plastic film as the outer shell, and the edges of the film are sealed using a heat-sealing process to form a closed cavity. Before encapsulation, the cell needs to be vacuumed to remove internal gases, increase energy density, and prevent gas expansion. However, during the vacuuming process, the aluminum-plastic film is prone to wrinkles or folds at the cell edges (especially in the air pocket area) due to negative pressure. If these wrinkles are not effectively suppressed, they will directly affect the subsequent heat-sealing quality, leading to defects such as incomplete sealing, leaks, and aluminum layer cracking. In severe cases, this may cause battery leakage, short circuits, or even thermal runaway, seriously affecting product yield and safety.

[0003] To address the aforementioned issues, existing technologies typically involve shaping the air pocket area of ​​the battery cell before vacuuming. This is achieved by applying clamping force to the aluminum-plastic film on both sides of the air pocket using a clamping device, and then stretching and flattening it while clamped to eliminate initial wrinkles and maintain film flatness. However, aluminum-plastic film has a certain degree of elasticity. If there is no continuous tensile force after clamping, its internal stress will gradually release, causing the flattened film to develop micro-wrinkles or loosen again, affecting the bonding quality of the heat-sealing interface. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a shaping device that can dynamically stretch an air bag after clamping.

[0005] The objective of this utility model can be achieved through the following technical solution: a battery cell air bag shaping device, comprising:

[0006] Cell positioning section;

[0007] An air bag clamping unit is disposed on the battery cell positioning part, including a clamping drive part and two sets of clamping members symmetrically arranged along the length direction of the battery cell positioning part. The clamping drive part is driven to connect with the clamping members. Each set of clamping members includes two first clamping parts arranged opposite to each other. The two first clamping parts in each set can move closer or further apart to achieve a stable clamping of the air bag body.

[0008] An edge-sealing clamping unit includes a second clamping part disposed on the first clamping part, the second clamping part moving synchronously with the first clamping part;

[0009] A stretching drive unit is disposed on the cell positioning unit and is drivenly connected to the clamping member for adjusting the relative distance between the clamping members.

[0010] In the above-mentioned battery cell air bag shaping device, the second clamping part includes a clamping strip, one end of which is fixed to the corresponding first clamping part, and the other end of which is connected to the end of the clamping strip on another set of first clamping parts along the length direction of the battery cell positioning part.

[0011] In the above-mentioned battery cell air bag shaping device, the end of the clamping bar on one set of the first clamping part is provided with a sliding groove, and the end of the clamping bar on the other set of the first clamping part is fixedly provided with a connecting rod, the connecting rod extending into the sliding groove and being able to slide relative to the sliding groove.

[0012] In the above-mentioned battery cell air bag shaping device, the two ends of the battery cell positioning part are respectively provided with a guide part extending in a straight line and a sliding part that slides with the guide part. The clamping member is connected to the sliding part, so that the clamping member can move linearly.

[0013] In the above-mentioned battery cell air bag shaping device, the guide part includes a guide block fixedly disposed at the end of the battery cell positioning part, the guide block is provided with a guide groove extending along the length direction of the battery cell positioning part, and the sliding part extends into the guide groove and can slide relative to it.

[0014] In the above-mentioned battery cell air bag shaping device, a worm is fixedly provided at the output end of the stretching drive part, a worm wheel is rotatably provided on the battery cell positioning part, the worm meshes with the worm wheel, a transmission part is fixedly provided on the worm wheel, and the transmission part is connected to the corresponding sliding part in a transmission connection.

[0015] In the above-mentioned battery cell air bag shaping device, the transmission part includes a transmission lever, which is fixed to the worm gear. The swing direction of the transmission lever is parallel to the movement direction of the sliding part. An elastic reset member is provided between the sliding part and the battery cell positioning part. During the swinging process, the transmission lever can abut against the sliding part and push it to move in a straight line.

[0016] In the above-mentioned battery cell air bag shaping device, the guide block is provided with a mounting cavity, and the mounting cavity is provided with an abutment part that can move along the length direction of the battery cell positioning part. The abutment part is fixed to the sliding part, and the elastic reset member is disposed in the mounting cavity. The two ends of the elastic reset member abut against the inner wall of the mounting cavity and the abutment part, respectively.

[0017] In the above-mentioned battery cell air bag shaping device, the transmission part includes a transmission block disposed on the side of the abutment part away from the sliding part.

[0018] In the above-mentioned battery cell air bag shaping device, the length extension direction of the transmission lever is perpendicular to its swing direction.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) The battery cell air bag shaping device provided in this application achieves precise positioning, zoned clamping and dynamic stretching and shaping of soft-pack battery cell air bags during the pre-sealing process through the coordinated design of the battery cell positioning part, air bag clamping unit, sealing clamping unit and stretching drive part.

[0021] (2) The tension drive unit is driven to connect with two sets of clamping parts. By adjusting the relative distance between the clamping parts, a controllable axial tension force can be applied to the clamped air bag. This tension force can actively tighten the air bag before or during the air extraction process, counteracting the irregular shrinkage tendency of the aluminum-plastic film caused by the internal negative pressure, and significantly inhibiting the generation and spread of wrinkles around the bayonet blade.

[0022] (3) The whole device adopts a modular design. The air bag clamping unit and the sealing clamping unit are integrated on the same clamping component. The stretching drive unit realizes the overall displacement through mechanical transmission. The clamping drive unit (such as a cylinder) and the stretching drive unit (such as a motor) can be connected to the control system to realize the automated process and improve production efficiency and process consistency. Attached Figure Description

[0023] Figure 1 This is one of the three-dimensional structural diagrams of the battery cell air bag shaping device;

[0024] Figure 2 This is one of the three-dimensional structural diagrams of the battery cell air bag shaping device;

[0025] Figure 3 yes Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0026] Figure 4 This is one of the three-dimensional structural diagrams of the battery cell air bag shaping device;

[0027] Figure 5 yes Figure 4 A magnified schematic diagram of the local structure at point B;

[0028] Figure 6 yes Figure 4 One of the schematic diagrams of the cross-sectional structure;

[0029] Figure 7 yes Figure 4The second schematic diagram of the cross-sectional structure;

[0030] Figure 8 This is a schematic diagram of the connection between the clamping bars.

[0031] In the figure, 100 is the cell positioning part; 101 is the positioning plate; 102 is the guide part; 103 is the sliding part; 104 is the guide groove; 105 is the mounting cavity; 106 is the abutment part; 107 is the guide block; 200 is the clamping drive part; 201 is the clamping component; 202 is the first clamping part; 203 is the second clamping part; 204 is the sliding groove; 205 is the connecting rod; 206 is the clamping bar; 207 is the clamping surface; 300 is the tension drive part; 301 is the worm gear; 302 is the worm wheel; 303 is the transmission lever; 304 is the elastic reset component; 305 is the transmission block; 400 is the mounting bracket; 401 is the connecting bracket; and 402 is the connecting column. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] like Figures 1-8 As shown, a battery cell air bag shaping device includes:

[0035] Cell positioning section 100;

[0036] An air bag clamping unit is disposed on a battery cell positioning part 100. It includes a clamping drive part 200 and two sets of clamping members 201 symmetrically arranged along the length direction of the battery cell positioning part 100. The clamping drive part 200 is driven to the clamping members 201. Each set of clamping members 201 includes two first clamping parts 202 arranged opposite to each other. The two first clamping parts 202 in each set can move closer or further apart to achieve a stable clamping of the air bag body.

[0037] The edge-sealing clamping unit includes a second clamping part 203 disposed on the first clamping part 202, and the second clamping part 203 moves synchronously with the first clamping part 202;

[0038] The stretching drive unit 300 is disposed on the cell positioning unit 100 and is drivenly connected to the clamping member 201 to adjust the relative distance between the clamping members 201.

[0039] This application provides a battery cell air bag shaping device, which, through the coordinated design of the battery cell positioning part 100, the air bag clamping unit, the sealing clamping unit and the stretching drive part 300, achieves precise positioning, zone clamping and dynamic stretching and shaping of the soft-pack battery cell air bag during the air extraction and pre-sealing process.

[0040] Specifically as follows:

[0041] By symmetrically arranging two sets of clamping members 201 on the cell positioning part 100, and independently or synchronously controlling the relative movement of the two first clamping parts 202 in each set of clamping members 201 by the clamping drive part 200, the main body of the cell air bag can be symmetrically and evenly clamped from both sides. This ensures that the air bag maintains a stable posture throughout the entire air extraction process. The second clamping part 203 in the sealing clamping unit is integrated on the first clamping part 202 and moves synchronously with it. It can precisely clamp the fine sealing area of ​​the cell air bag while clamping the main body of the air bag. Even if initial wrinkles occur around the piercing edge (the top edge of the cell air bag, which is a small opening reserved in the pre-sealing process) due to stress concentration during the air extraction process, its expansion path will be blocked by the clamping boundary of the second clamping part 203, preventing it from spreading towards the fine sealing direction, thereby ensuring full adhesion between the aluminum-plastic film layers in the fine sealing area.

[0042] The tension drive unit 300 is driven to connect with the clamping member 201. By adjusting the relative distance between the clamping members 201, a controllable axial tension force can be applied to the clamped air bag. This tension force can actively tighten the air bag before or during air extraction, counteracting the irregular shrinkage tendency of the aluminum-plastic film caused by internal negative pressure, and significantly inhibiting the generation and spread of wrinkles around the bayonet blade.

[0043] The entire device adopts a modular design. The air bag clamping unit and the edge sealing clamping unit are integrated on the same clamping component 201. The stretching drive unit 300 achieves overall displacement through mechanical transmission. The clamping drive unit 200 (such as a cylinder) and the stretching drive unit 300 (such as a motor) can be connected to the control system to realize automated processes and improve production efficiency and process consistency.

[0044] It is worth mentioning that the cell positioning part 100 includes two positioning plates 101 arranged opposite each other, and there is a gap between the two positioning plates 101 to form a cell placement cavity. The positioning plates 101 are set on the loading platform.

[0045] Preferably, the second clamping part 203 includes a clamping strip 206, one end of which is fixed to the corresponding first clamping part 202. Along the length direction of the cell positioning part 100, the other end of the clamping strip 206 is connected to the end of the clamping strip 206 on another set of first clamping parts 202. This forms a continuous straight clamping line across the air bag, which precisely corresponds to the position of the fine sealing edge. A seamless physical barrier is constructed between the piercing edge and the fine sealing edge, effectively blocking the path of wrinkles spreading from any side of the air bag to the middle or along the length direction, ensuring that the aluminum-plastic film in the entire fine sealing edge area remains flat and wrinkle-free during the air extraction process.

[0046] When the two sets of clamping members 201 move in opposite directions under the action of the stretching drive unit 300, a gap is formed between the ends of the two clamping strips 206 that were originally mated. Under the action of axial tension, the aluminum-plastic film at the gap will undergo elastic or plastic stretching, and the material will be stretched and thinned along the stretching direction, and shrink laterally, resulting in an overall taut state. At the same time, since the air bag has been evacuated or is in a negative pressure environment, the two layers of aluminum-plastic film adhere to each other under the combined action of external atmospheric pressure and internal negative pressure; and the stretching force further enhances the contact pressure and adhesion stability between the film layers, preventing local bulging or interlayer separation caused by the gap, and ensuring the clamping continuity of the fine sealing edge.

[0047] Based on the above embodiment, a sliding fit structure of groove 204 and connecting rod 205 is introduced between the ends of the clamping strips 206. Specifically, grooves 204 are formed at the ends of the clamping strips 206 on one set of first clamping parts 202, and connecting rods 205 are integrally provided at the ends of the other set of clamping strips 206. The connecting rods 205 extend into the grooves 204 and can slide along their length. Through the cooperation of the connecting rods 205 and the grooves 204, the two clamping strips 206 maintain mechanical connection and synchronized movement under the action of the clamping drive part 200 and the stretching drive part 300. When the two sets of clamping parts 201 move away from or closer to each other due to the stretching drive, the connecting rods 205 slide within the grooves 204, ensuring that the corresponding clamping strips 206 are always on the same straight line, thus guaranteeing the straightness of the edge-sealing protective tape throughout the entire process.

[0048] It is worth mentioning that the clamping surfaces 207 on the clamping strips 206, which are located in the same straight direction, are in the same plane. The clamping force on the aluminum-plastic film is evenly distributed along the entire edge sealing direction without steps or misalignment, ensuring that the entire edge sealing area is subjected to consistent force under clamping conditions, resulting in reliable protection.

[0049] like Figures 3-7 As shown, the battery cell positioning part 100 is further provided with a guide part 102 extending in a straight line and a sliding part 103 that slides with the guide part 102 at both ends. The clamping member 201 is connected to the sliding part 103, so that the clamping member 201 can move linearly.

[0050] The guide part 102 (such as a guide rail or guide groove) and the sliding part 103 (such as a slider or sliding seat) form a linear motion pair, which strictly constrains the sliding part 103 to move only along a preset linear direction. This ensures that the movement trajectory of the clamping member 201 under the action of the tension drive part 300 is highly parallel and without deflection, thereby ensuring the positional consistency and symmetry of each tensioning action.

[0051] Specifically, the clamping drive unit 200 includes a pneumatic clamp, a first clamping part 202 is fixed to the two output clamping ends of the pneumatic clamp, a clamping bar 206 is fixed on the first clamping part 202, and a sliding part 103 is fixed to the pneumatic clamp, thereby realizing the connection between the clamping member 201 and the sliding part 103.

[0052] This application further optimizes the guiding structure by employing a guide block 107 fixed to the end of the cell positioning part 100, on which a guide groove 104 extending along the length direction of the cell positioning part 100 is machined. A sliding part 103 extends into the guide groove 104 and can slide relative to it. This results in higher integration and protection. The guide groove 104 is directly machined inside the guide block 107, and the sliding part 103 (such as a sliding column, T-block, or rectangular slider) is embedded within the groove to form a built-in linear motion pair. This reduces the space occupied by the device in the width direction, making the overall structure more compact.

[0053] A worm gear 301 is fixedly mounted on the output end of the stretching drive unit 300, and a worm wheel 302 is rotatably mounted on the battery cell positioning unit 100. The worm gear 301 meshes with the worm wheel 302, and a transmission unit is fixedly mounted on the worm wheel 302. The transmission unit is connected to the corresponding sliding part 103. The worm gear transmission has a typical unidirectional transmission self-locking characteristic: that is, the worm gear 301 can easily drive the worm wheel 302 to rotate, but the worm wheel 302 cannot drive the worm gear 301 in the reverse direction. When the stretching drive unit 300 (such as a motor) drives the worm gear 301 to rotate, driving the worm wheel 302 and the transmission unit to move, causing the sliding part 103 to move and apply a stretching force to the air bag, the motor stops supplying power. The system can still automatically lock the current position by relying on the self-locking mechanism of the worm gear 301, preventing the sliding part 103 from retreating under the elastic restoring force of the air bag or external disturbances. This passive locking function can achieve long-term stable maintenance of the stretching force without the need for an additional braking device or continuous power supply.

[0054] Based on the worm gear transmission, a transmission lever 303 fixedly connected to the worm gear 302 is further provided. Its swing direction is parallel to the movement direction of the sliding part 103, and the sliding part 103 is connected to the battery cell positioning part 100 through an elastic reset member 304 (such as a spring, spring sheet, or rubber pad). During the swinging process, the transmission lever 303 pushes the sliding part 103 to move. Subsequently, the elastic reset member 304 absorbs the impact energy during compression or stretching, further buffering the acceleration, so that the tensile force rises smoothly and gradually from zero, effectively protecting the integrity of the aluminum-plastic film, especially suitable for ultra-thin or high-extensibility film materials.

[0055] This application further optimizes the structural layout by providing a mounting cavity 105 inside the guide block 107, and integrating the abutment portion 106 and the elastic reset member 304 within this cavity. The sliding portion 103 passes through a sliding groove and is fixedly connected to the abutment portion 106. Both ends of the elastic reset member 304 abut against the inner wall of the mounting cavity 105 and the abutment portion 106, respectively. By completely embedding the elastic reset member 304 and the abutment portion 106, which would otherwise be externally mounted, within the mounting cavity 105 of the guide block 107, the cumbersome structure of external suspension or bracket installation is avoided. The mounting cavity 105 protects the elastic reset member 304, improving its long-term operational stability and durability in industrial environments.

[0056] Furthermore, a sliding guide surface can be formed between the inner wall of the mounting cavity 105 and the outer surface of the abutment portion 106. This ensures that the abutment portion 106 always moves linearly along the length direction (i.e., the stretching direction) of the cell positioning portion 100 during compression and rebound.

[0057] The abutment portion 106, as the core component, is connected at its upper end to the sliding portion 103 (driving the clamping member 201), and at its lower end to the transmission block 305 (receiving the thrust from the transmission lever 303). The elastic reset member 304 acts axially on the abutment portion 106. Both ends of the abutment portion 106 are constrained by force, forming a double cantilever force distribution. During repeated pushing and pulling, the abutment portion 106 is less prone to bending deformation or torsion, ensuring the straightness and long-term stability of the movement trajectory. The transmission block 305, located at the lower end of the abutment portion 106, provides the transmission lever 303 with a path selection for swinging in from below or diagonally below. This avoids interference between the transmission lever 303 and the movement of the upper battery cell, air bag, or other edge-sealing equipment.

[0058] It is worth mentioning that a guide groove 104 is also provided at the lower end of the mounting cavity 105. A sliding part 103 on the transmission block 305 extends into the guide groove 104 and slides in cooperation with the guide groove 104, so that the transmission block 305 can make precise linear movement along the guide groove 104 when pushed by the transmission lever 303. The transmission block 305 is located at the lower end of the abutment part 106 and is the direct receiving point of the force applied by the transmission lever 303. The thrust of the transmission lever 303 may have a slight angular deviation or lateral component, which may easily cause the transmission block 305 to tilt, thereby causing the entire abutment part 106 to wobble. By providing a guide groove 104 at the lower end of the mounting cavity 105 and cooperating with the sliding part 103 on the transmission block 305, it is ensured that its movement trajectory is strictly along the length direction of the cell positioning part 100.

[0059] The guide block 107 serves as the structural base at the end of the cell positioning part 100, and also performs multiple functions: the upper guide groove 104 mounts and guides the clamping drive part 200 (such as a cylinder or electric cylinder) to ensure that its stretching is in a straight direction; the lower guide groove 104 mounts and guides the transmission block 305 to ensure the straightness of the stretching transmission input; the internal mounting cavity 105 accommodates the abutment part 106 and the elastic reset member 304, and provides their motion guidance. The functions that originally required multiple independent brackets or mounting plates are concentrated in a single guide block 107, greatly simplifying the structure.

[0060] The length of the transmission lever 303 extends perpendicular to its swing direction. The transmission lever 303 forms line or surface contact (rather than point contact) with the contact surface of the transmission block 305 along its length. During the swinging motion, the load is distributed over a longer contact area, significantly reducing the compressive stress per unit area. This large-area contact ensures stable and continuous force transmission between the transmission lever 303 and the transmission block 305 throughout the entire swinging process.

[0061] Specifically, the guide block 107 and the cell positioning part 100 are fixedly connected by the mounting bracket 400. A connecting bracket 401 is fixedly installed on the guide block 107, and a connecting column 402 is rotatably installed on the connecting bracket 401. The worm gear 302 and the transmission lever 303 are both fixedly installed on the connecting column 402, and the tension drive part 300 is fixedly installed on the connecting bracket 401.

[0062] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0064] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A battery cell air bag shaping device, characterized in that, include: Cell positioning section; An air bag clamping unit is disposed on the battery cell positioning part, including a clamping drive part and two sets of clamping members symmetrically arranged along the length direction of the battery cell positioning part. The clamping drive part is driven to connect with the clamping members. Each set of clamping members includes two first clamping parts arranged opposite to each other. The two first clamping parts in each set can move closer or further apart to achieve a stable clamping of the air bag body. An edge-sealing clamping unit includes a second clamping part disposed on the first clamping part, the second clamping part moving synchronously with the first clamping part; A stretching drive unit is disposed on the cell positioning unit and is drivenly connected to the clamping member for adjusting the relative distance between the clamping members.

2. The battery cell air bag shaping device according to claim 1, characterized in that, The second clamping part includes a clamping bar, one end of which is fixed to the corresponding first clamping part, and the other end of which is connected to the end of a clamping bar on another set of first clamping parts along the length direction of the cell positioning part.

3. The battery cell air bag shaping device according to claim 2, characterized in that, One set of clamping bars on the first clamping part has a groove at its end, and the other set of clamping bars on the first clamping part has a connecting rod fixedly provided at its end. The connecting rod extends into the groove and can slide relative to the groove.

4. The battery cell air bag shaping device according to claim 1, characterized in that, The battery cell positioning part is provided with guide parts extending in a straight line and sliding parts that slide with the guide parts at both ends. The clamping member is connected to the sliding part, so that the clamping member can move linearly.

5. The battery cell air bag shaping device according to claim 4, characterized in that, The guide portion includes a guide block fixedly disposed at the end of the cell positioning portion. The guide block is provided with a guide groove extending along the length direction of the cell positioning portion. The sliding portion extends into the guide groove and can slide relative to it.

6. The battery cell air bag shaping device according to claim 4, characterized in that, A worm gear is fixedly installed at the output end of the stretching drive unit, and a worm wheel is rotatably installed on the cell positioning unit. The worm gear meshes with the worm wheel, and a transmission unit is fixedly installed on the worm wheel. The transmission unit is connected to the corresponding sliding unit in a transmission manner.

7. The battery cell air bag shaping device according to claim 6, characterized in that, The transmission part includes a transmission lever, which is fixed to the worm gear. The swing direction of the transmission lever is parallel to the movement direction of the sliding part. An elastic reset member is provided between the sliding part and the cell positioning part. During the swinging process, the transmission lever can abut against the sliding part and push it to move in a straight line.

8. The battery cell air bag shaping device according to claim 7, characterized in that, The guide block has an installation cavity, and the installation cavity has an abutment part that can move along the length direction of the battery cell positioning part. The abutment part is fixed to the sliding part, and the elastic reset member is disposed in the installation cavity. The two ends of the elastic reset member abut against the inner wall of the installation cavity and the abutment part, respectively.

9. The battery cell air bag shaping device according to claim 8, characterized in that, The transmission part includes a transmission block disposed on the side of the abutment part away from the sliding part.

10. A battery cell air bag shaping device according to claim 7, characterized in that, The length of the transmission lever extends perpendicularly to its swing direction.

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