Alignment device, module carrier plate and extrusion equipment

Abstract

The utility model discloses an alignment device, module carrier plate and extrusion equipment, wherein the alignment device comprises: a base, a fixed support, a connecting support, an alignment piece and an elastic mechanism, specifically, the fixed support is fixedly arranged with the base, the connecting support is hinged with the fixed support, the alignment piece is provided with an alignment surface, and the elastic mechanism is connected with the alignment piece and the connecting support; wherein the connecting bracket is used for driving the elastic mechanism and the alignment piece to rotate relative to the fixed bracket during rotation until the part of the alignment surface elastically pushes the external component. By means of the structure, position alignment of a plurality of external components can be achieved through the datum plane formed by the alignment faces.

Description

Technical Field

[0001] The utility model is applied to the technical field of installation alignment, in particular to an alignment device, a module carrier board and an extrusion device. Background Art

[0002] In the automated production process of the battery cell module, it is necessary to first stack the battery cells to obtain a battery cell assembly, then place the battery cell assembly on the module carrier board, then install end plates on both sides of the battery cell assembly, then assemble the steel belt, and then install the bus bar to obtain the battery cell module.

[0003] When installing the bus bar, it needs to be positioned and fixed through the end plate. If there is a large offset between the end plate and the battery cell assembly, it will cause the installation of the bus bar to be offset, which will further cause the laser welding to be offset, and ultimately lead to reliability problems of the battery cell module. Summary of the Invention

[0004] The utility model provides an alignment device, a module carrier board and an extrusion device, which are beneficial to solving the problem of possible offset between the end plate and the battery cell assembly.

[0005] In the first aspect of the utility model, an alignment device is provided, which includes: a base, a fixed bracket, a connecting bracket, an alignment member and an elastic mechanism. The fixed bracket is fixedly arranged on the base, the connecting bracket is hinged to the fixed bracket, the alignment member has an alignment surface, and the elastic mechanism connects the alignment member and the connecting bracket; wherein, the connecting bracket is used for driving the elastic mechanism and the alignment member to rotate relative to the fixed bracket when rotating until a part of the alignment surface elastically pushes against an external member.

[0006] In some embodiments, the elastic mechanism includes a first spring, a guiding sleeve and a screw rod. The guiding sleeve is fixedly arranged on the connecting bracket; the guiding sleeve, the first spring and the alignment member are arranged in sequence, the screw rod passes through the guiding sleeve and the first spring and is connected to the alignment member; and the first spring abuts against both the guiding sleeve and the alignment member.

[0007] In some embodiments, the elastic mechanism further includes a second spring. Among them, the second spring, the guiding sleeve, the first spring and the alignment member are arranged in sequence. The screw rod passes through the second spring. Along the axial direction of the screw rod, a nut is provided at one end of the screw rod away from the alignment member, the nut abuts against the second spring, and the second spring also abuts against the guiding sleeve.

[0008] In some embodiments, the connecting bracket includes: a rocker, a handle, and a transmission rod. The rocker has a first connection and a second connection that are spaced apart, the second connection being closer to the elastic mechanism than the first connection, the first connection being hinged to the fixed bracket, and one end of the rocker away from the first connection being fixed to the guide sleeve. The handle has a third connection and a fourth connection that are spaced apart, the third connection being hinged to the fixed bracket, and the line between the first connection and the second connection intersecting the line between the third connection and the fourth connection. One end of the transmission rod is hinged to the second connection, and the other end of the transmission rod is hinged to the fourth connection. When the handle rotates, the transmission rod drives the rocker to rotate, and the transmission rod can rotate relative to the handle to have a locked state and an unlocked state.

[0009] In some embodiments, the handle has a first hollow section extending from the third connection toward the fourth connection, and the rocker is disposed through the first hollow section between the third and fourth connections. The rocker has a second hollow section, one end of the transmission rod extends into the second hollow section and is hinged to the second connection, while the opposite end of the transmission rod extends into the first hollow section and is hinged to the fourth connection. The transmission rod has a raised block, which is configured to abut against the rocker when the transmission rod is rotated to a locked position.

[0010] In some embodiments, an end of the rocker away from the first connection forms an arc piece, and the inner ring of the arc piece fits and is fixedly arranged with the outer ring of the guide sleeve.

[0011] The second aspect of the present invention provides a module carrier, comprising: a main carrier, a module limiting mechanism, and two alignment devices as described in any of the above embodiments. The module limiting mechanism is mounted on the main carrier, and the module limiting mechanism is suitable for carrying the battery cell assembly along a first direction. The two alignment devices are mounted on the main carrier, and along the second direction, the two alignment devices are located on one side of the module limiting mechanism. Along the third direction, the two alignment devices are spaced apart, and the first direction, the second direction, and the third direction are perpendicular to each other. Part of the alignment surface of one alignment device is used to elastically push up the battery cell at one end of the battery cell assembly; and part of the alignment surface of the other alignment device is used to elastically push up the battery cell at the other end of the battery cell assembly.

[0012] In some embodiments, the module limiting mechanism includes: a module support plate, a first limiting member, and a second limiting member. The module support plate is adapted to support the battery cell assembly along a first direction, the first limiting member is located on one side of the module support plate along a second direction, and the second limiting member is located on a side of the module support plate facing away from the first limiting member along the second direction.

[0013] In some embodiments, the module limiting mechanism further includes: a third limiting member and a fourth limiting member. Along the third direction, the third limiting member is located on one side of the module support plate and is used to support the end plate at one end of the battery cell assembly. Along the third direction, the fourth limiting member is located on the side of the module support plate facing away from the third limiting member and is used to support the end plate at the other end of the battery cell assembly. The other portion of the alignment surface of one alignment device is used to contact one end plate, and the other portion of the alignment surface of the other alignment device is used to contact the other end plate.

[0014] A third aspect of the present invention provides an extrusion device comprising a workbench, a module carrier, and an extrusion mechanism. The module carrier is mounted on the workbench, and the module carrier includes any of the above-described embodiments. The extrusion mechanism is fixedly mounted on the workbench and is used to extrude the end plate and battery cell assembly on the module carrier.

[0015] The present invention provides an alignment device comprising a base, a fixed bracket, a connecting bracket, an alignment member, and an elastic mechanism. The fixed bracket is fixedly arranged with the base, the connecting bracket is hinged with the fixed bracket, the alignment member has an alignment surface, and the elastic mechanism connects the alignment member and the connecting bracket. The connecting bracket is configured to drive the elastic mechanism and the alignment member to rotate relative to the fixed bracket when rotating until a portion of the alignment surface elastically pushes against an external component, thereby enabling the alignment of multiple external components using the reference surface formed by the alignment surface, thereby facilitating the reduction of offset between the multiple external components and improving the accuracy of the installation positions of the multiple external components. Furthermore, the elastic mechanism, which achieves the elastic push of the alignment surface, helps the alignment device maintain a close fit between the alignment surface and the battery cell under the influence of collision, vibration, etc., thereby improving the accuracy of the reference surface under extreme conditions and improving the accuracy of the subsequent end plate installation position. Furthermore, the elastic mechanism allows the alignment member to be in elastic contact with the battery cell, thereby reducing the risk of a hard collision between the battery cell and the alignment member, thereby reducing the possibility of damage to the alignment member or the battery cell due to collision, and reducing the risk of the battery cell being pushed by the alignment member. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the alignment device provided by the present utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the positioning device provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the locking state of the alignment device;

[0019] Figure 4 This is a schematic diagram of the unlocked state of the alignment device;

[0020] Figure 5It is a schematic structural diagram of an embodiment of the module carrier board provided by the present utility model;

[0021] Figure 6 It is a schematic alignment diagram of the alignment surface of the alignment device;

[0022] Figure 7 It is a schematic diagram of the position alignment of the battery cell assembly and the end plate through the alignment device;

[0023] Figure 8 It is a schematic diagram after the battery cell assembly and the end plate are installed;

[0024] Figure 9 It is a schematic structural diagram of an embodiment of the extrusion device provided by the present utility model. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] It should be noted that if there are directional indications involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0028] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0029] Please first refer to Figure 5 and Figure 7 , Figure 5 It is a schematic structural diagram of an embodiment of the module carrier board provided by the present utility model, Figure 7This is a schematic diagram illustrating the alignment of a cell assembly and an end plate using an alignment device. This embodiment provides a module carrier 200 comprising a main carrier 210, a module limiting mechanism 220, and an alignment device 100. The module limiting mechanism 220 and the alignment device 100 are mounted on the main carrier 210. The module limiting mechanism 220 is adapted to support a cell assembly 270 along a first direction z.

[0030] In some embodiments, along the second direction y, the alignment device 100 is installed on one side of the module limiting mechanism 220. The second direction y is perpendicular to the first direction z.

[0031] In some embodiments, along the third direction x, two alignment devices 100 are spaced apart.

[0032] In some embodiments, the cell module 290 includes a cell assembly 270 and two end plates 202. The cell assembly 270 includes a plurality of cells 271 arranged along a third direction x. Along the third direction x, the cell assembly 270 is located between the two end plates 202. The first direction z, the second direction y, and the third direction x are perpendicular to each other.

[0033] Please see further Figure 1 and Figure 2 , Figure 1 It is a schematic diagram of the assembly structure of an embodiment of the alignment device provided by the utility model. Figure 2 It is a schematic diagram of the explosion structure of an embodiment of the positioning device provided by the utility model.

[0034] In some embodiments, the alignment device 100 includes a base 110, a fixed bracket 131, a connecting bracket 132, an alignment member 121 and an elastic mechanism 122. The base 110 is used for installation and fixation with other devices. The fixed bracket 131 is fixed to the base 110, and the connecting bracket 132 is hinged to the fixed bracket 131, that is, the connecting bracket 132 can rotate relative to the fixed bracket 131. The alignment member 121 has an alignment surface 1211, and the alignment member 121 is connected to the connecting bracket 132. The connecting bracket 132 is used to drive the alignment member 121 to rotate relative to the fixed bracket 131 during rotation, so that part of the alignment surface can push against the external component. It can be understood that the connecting bracket 132 of the alignment device 100 can rotate after being subjected to force and drive the alignment member 121 to rotate, so that part of the alignment surface 1211 of the alignment member 121 pushes against the external component, and the other part of the alignment surface 1211 serves as a reference surface.

[0035] Taking the external component as the battery cell 271 as an example for illustration: When actually installing the end plate 202, part of the mating surface 1211 of the aligning member 121 can be first brought into close contact with the battery cell 271. At this time, the part of the mating surface 1211 that is not in contact with the battery cell 271 can serve as the reference surface for installing the end plate 202. When installing the end plate 202, it can be installed based on this reference surface, which is conducive to improving the accuracy of the installation position of the end plate 202 and reducing the risk of offset between the end plate 202 and the battery cell 271.

[0036] In some embodiments, the base 110 may include a fixedly arranged mounting portion 111 and a support portion 112. The mounting portion 111 is used for mounting and fixing with other devices. After the mounting portion 111 is mounted and fixed with other devices, the side of the mounting portion 111 away from the support portion 112 is close to other devices, and the support portion 112 is also fixedly arranged with the fixing bracket 131.

[0037] In some embodiments, a plurality of through holes may be provided on the mounting portion 111 to perform rivet mounting and fixing or threaded mounting and fixing with other devices through the plurality of through holes.

[0038] In some embodiments, the mounting portion 111 includes, but is not limited to, a rectangular body, a cylindrical body, a prism, or an irregular three-dimensional structure, etc., and is not specifically limited herein.

[0039] In some embodiments, the support portion 112 includes, but is not limited to, a rectangular body, a columnar body, or a protruding structure, etc., and is not specifically limited herein.

[0040] In some embodiments, the fixing bracket 131 and the base 110 may be fixedly arranged by screws, fixedly arranged by welding, or fixedly arranged by clamping, etc.

[0041] In some embodiments, the fixing bracket 131 and the base 110 may also be integrally formed, and the specific fixing method is not limited herein.

[0042] The fixing bracket 131 is used to fix the connecting bracket 132 on the base 110. In a specific application scenario, the fixing bracket 131 includes a fixing portion 1311 and a connecting portion 1312. The fixing portion 1311 is fixedly arranged with the support portion 112, and can be specifically fixed by means of nail pins or welding, etc. The connecting portion 1312 is fixedly arranged on the side of the fixing portion 1311 away from the support portion 112. The connecting bracket 132 is hinged with the connecting portion 1312.

[0043] In some embodiments, the fixing portion 1311 is a plate-like structure to facilitate fitting and fixing with the side surface of the support portion 112. The shape of the fixing portion 1311 includes, but is not limited to, square, circular, triangular, trapezoidal, rhomboidal, or irregular shapes.

[0044] In some embodiments, the alignment surface 1211 is formed by a planar structure on the alignment member 121 and is used to align the battery cell assembly 270 with the end plate 202. The side of the alignment member 121 away from the elastic structure 122 is a planar structure to form the alignment surface 1211.

[0045] In a specific application scenario, the shape of the alignment surface 1211 of the planar mechanism includes but is not limited to a circle, a square, a regular polygon, a rhombus, a parallelogram, a polygon, and the like.

[0046] In some embodiments, the alignment device 100 further includes an elastic mechanism 122, which connects the alignment member 121 and the connecting bracket 132. The connecting bracket 132 of the alignment device 100 is capable of rotating when subjected to force. When the connecting bracket 132 rotates relative to the fixed bracket 131, the elastic mechanism 122 and the alignment member 121 rotate relative to the fixed bracket 131 until a portion of the alignment surface 1211 elastically pushes against the external component.

[0047] Taking the external component as the battery cell 271 as an example, in actual situations, the alignment device 100 may be affected by collisions, vibrations, etc., which may affect the relative position between the alignment member 121 and the battery cell 271. In the embodiment of the present application, the alignment surface 1211 is elastically pushed up against the battery cell 271 by the elastic mechanism 122. On the one hand, this is conducive to allowing the alignment device 100 to maintain a close fit between the alignment surface 1211 and the battery cell 271 under the influence of collisions, vibrations, etc., improving the accuracy of the reference surface under extreme conditions, and facilitating the accuracy of the subsequent installation position of the end plate 202. On the other hand, the elastic mechanism 122 allows the alignment member 121 to be in elastic contact with the battery cell 271, which is conducive to reducing the risk of hard collision between the battery cell 271 and the alignment member 121, thereby reducing the possibility of damage to the alignment member 121 or the battery cell 271 due to collision, and also reducing the risk of the battery cell 271 being pushed by the alignment member 121.

[0048] In a specific application scenario, the elastic mechanism 122 utilizes a spring structure to achieve elastic pushing. In a specific application scenario, the elastic mechanism 122 utilizes an arc structure to achieve elastic pushing, which is not specifically limited here.

[0049] In some embodiments, the elastic mechanism 122 includes a first spring 141, a guide sleeve 143, and a screw 144. The guide sleeve 143 is fixed to the connecting bracket 132. The guide sleeve 143, the first spring 141, and the alignment member 121 are arranged in sequence. The screw 144 passes through the guide sleeve 143 and the first spring 141 and is connected to the alignment member 121. The first spring 141 abuts against both the guide sleeve 143 and the alignment member 121, enabling the alignment surface 1211 of the alignment member 121 to elastically push against the external component.

[0050] In some embodiments, the screw 144 is slidable relative to the guide sleeve 143 and the first spring 141.

[0051] In some embodiments, the first spring 141 is a helical spring. The guide sleeve 143 is a hollow long rod-shaped structure. The screw 144 is a long rod-shaped structure.

[0052] In a specific application scenario, the external component is the battery cell 271. During the positioning process of the elastic mechanism 122, the elastic force of the first spring 141 is greater than the clamping force between the end plate 202 and the battery cell 271 when the end plate 202 is installed, which is beneficial to reducing the risk of displacement deformation of the alignment surface 1211.

[0053] When the alignment device 100 performs elastic pushing, a part of the alignment surface 1211 first contacts the battery cell 271 of the battery cell assembly 270, and then the alignment surface 1211 continues to push the battery cell assembly 270. The first spring 141 is gradually compressed between the guide sleeve 143 and the alignment member 121 to achieve elastic pushing. At this time, the part of the alignment surface 1211 that does not contact the battery cell 271 can be used as a reference surface for installing the end plate 202, so that the positions of the battery cell assembly 270 and the end plate 202 are aligned.

[0054] In some embodiments, the elastic mechanism 122 further includes a second spring 142. The second spring 142, the guide sleeve 143, the first spring 141, and the alignment member 121 are arranged in sequence. The screw 144 passes through the second spring 142. Along the axial direction of the screw 144, a nut 145 is provided at one end of the screw 144 away from the alignment member 121. The nut 145 abuts against the second spring 142, and the second spring 142 also abuts against the guide sleeve 143. On the one hand, when the abutment between the alignment member 121 and the battery cell 271 is cancelled, the second spring 142 is beneficial to buffering the reset of the alignment member 121, improving the stability of the reset of the alignment member 121, and reducing the risk of interference and collision between the alignment member 121 and other components. On the other hand, when the alignment member 121 is in a working state where it does not abut against the battery cell 271, the second spring 142 plays a role in stabilizing the alignment member 121, reducing the possibility of the alignment member 121 sliding under external force, and improving the stability of the alignment device 100 when it is idle.

[0055] With the above structural arrangement, by providing the second spring 142 between the guide sleeve 143 and the nut 145, when the compressed first spring 141 gradually expands, elastic buffering is performed between the guide sleeve 143 and the nut 145 by using the second spring 142, which is beneficial to the stable reset of the alignment member 121, buffering the force received by the guide sleeve 143, improving the structural stability and reliability of the elastic mechanism 122, and extending the service life of the alignment device 100.

[0056] In some embodiments, the second spring 142, the guide sleeve 143, and the first spring 141 are slidably disposed on the screw 144.

[0057] In some embodiments, the size of one end of the guide sleeve 143 close to the second spring 142 is larger than that of the second spring 142. The width of the nut 145 is larger than that of the second spring 142 to clamp the second spring 142 at the position between the guide sleeve 143 and the nut 145.

[0058] In some embodiments, one end of the guide sleeve 143 close to the second spring 142 extends towards a plane perpendicular to the extending direction of the guide sleeve 143, so that the size of one end of the guide sleeve 143 close to the second spring 142 is larger than that of the second spring 142.

[0059] In some embodiments, please refer specifically to Figure 2 , the connecting bracket 132 includes: a rocker 151, a handle 153, and a transmission rod 152. The rocker 151 has a first connection part 161 and a second connection part 162 arranged at intervals. The second connection part 162 is closer to the elastic mechanism 122 than the first connection part 161. The first connection part 161 is hinged to the fixed bracket 131. One end of the rocker 151 away from the first connection part 161 is fixedly arranged with the guide sleeve 143. The handle 153 has a third connection part 163 and a fourth connection part 164 arranged at intervals. The third connection part 163 is hinged to the fixed bracket 131. Among them, the connection line between the first connection part 161 and the second connection part 162 intersects with the connection line between the third connection part 163 and the fourth connection part 164. One end of the transmission rod 152 is hinged to the second connection part 162, and the opposite end of the transmission rod 152 is hinged to the fourth connection part 164. Among them, when the handle 153 rotates, it drives the transmission rod 152 to drive the rocker 151 to rotate, and the transmission rod 152 can rotate relative to the handle 153 and has a locked state and an unlocked state.

[0060] When the handle 153 rotates, the transmission rod 152 transmits the rotation of the handle 153 to the rocker 151, that is, the handle 153 uses the transmission rod 152 to drive the rocker 151 to rotate through the first connection part 161, so as to switch between the locked state and the unlocked state.

[0061] When the transmission rod 152 is in the locked state, the relative positions among the rocker 151, the handle 153, and the transmission rod 152 are fixed, which is convenient for aligning the positions of the battery cell assembly 270 and the end plate 202 with the mating surface 1211 as the reference surface. When the transmission rod 152 is in the unlocked state, the relative positions among the rocker 151, the handle 153, and the transmission rod 152 can change, causing the position of the mating member 121 to move, increasing the activity space, and facilitating the taking and placing of the battery cell assembly 270.

[0062] With the above structure, the connecting bracket 132 can utilize the interconnection among the rocker 151, the handle 153, the transmission rod 152 and the fixed bracket 131, enabling the transmission rod 152 to rotate relative to the handle 153 and have a locked state and an unlocked state, so that the alignment member 121 can elastically push against the battery cell assembly 270, and use the alignment surface 1211 as a reference surface to align the positions of the battery cell assembly 270 and the end plate 202. In the unlocked state, it can drive the alignment member 121 to move, increasing the movement space, facilitating the loading and unloading of the battery cell assembly 270, and improving the adaptability of the alignment device 100 to different demand scenarios.

[0063] In some embodiments, the hinges at the above-mentioned multiple connection points can all be hinged by threaded connections or can all be clamping hinges, which are not limited herein. Clamping hinge means that two components are connected together by pins, bolts, pin shafts, etc., allowing relative rotational movement.

[0064] In some embodiments, one end of the handle 153 away from the third connection point 163 forms a handle head 1531 for holding.

[0065] In some embodiments, the transmission rod 152 can be an elongated rod to connect the rocker 151 and the handle 153 respectively.

[0066] In some embodiments, one end of the rocker 151 away from the first connection point 161 forms an arc member 155, and the inner circle of the arc member 155 is in contact and fixedly arranged with the outer circle of the guide sleeve 143.

[0067] With the above structure, by setting one end of the rocker 151 away from the first connection point 161 as the arc member 155, the arc structure is used to adapt to the cylindrical structure of the guide sleeve 143, improving the matching degree between the arc member 155 and the guide sleeve 143, which is beneficial to improving stability and reliability.

[0068] In some embodiments, the inner circle of the arc member 155 and the outer circle of the guide sleeve 143 are fixedly connected and arranged in contact by welding to improve stability.

[0069] In some embodiments, the inner diameter of the inner circle of the arc member 155 is slightly larger than that of the screw rod 144, mainly playing a guiding role for the screw rod 144 and reserving a certain space for flexible control.

[0070] In some embodiments, the width of the first spring 141 is greater than the width of the inner circle of the arc member 155 and less than the width of the outer circle of the arc member 155, so as to be clamped between the alignment member 121 and the arc member 155.

[0071] In some embodiments, along the direction of the third connection portion 163 towards the fourth connection portion 164, the handle 153 is provided with a first hollowed-out section 156, and the rocker 151 passes through the first hollowed-out section 156 between the third connection portion 163 and the fourth connection portion 164; the rocker 151 is provided with a second hollowed-out section 157, and the second connection portion 162 is arranged on the second hollowed-out section 157. One end of the transmission rod 152 extends into the second hollowed-out section 157 and is hinged to the second connection portion 162, and the opposite end of the transmission rod 152 extends into the first hollowed-out section 156 and is hinged to the fourth connection portion 164; a raised block 154 is arranged on the transmission rod 152, and the raised block 154 is used to abut against the rocker 151 when the transmission rod 152 rotates to the locked state.

[0072] In some embodiments, the length of the first hollowed-out section 156 is less than the length of the rocker 151. The width of the raised block 154 is greater than the outer width of the rocker 151 to limit the rocker 151.

[0073] The rocker 151 passes through the first hollowed-out section 156 of the handle 153, so that the rocker 151 and the handle 153 are arranged in a cross manner, and the transmission rod 152 is respectively connected to the fourth connection portion 164 of the first hollowed-out section 156 and the second connection portion 162 of the second hollowed-out section 157 of the rocker 151, that is, the cross-arranged rocker 151 and the handle 153 are connected, so that a triangular structure is formed locally among the rocker 151, the handle 153 and the transmission rod 152. And the connections at each connection portion are all hinged, so that the triangular structure is a movable triangular structure, and then the switching between the locked state and the unlocked state is carried out.

[0074] Please refer specifically to Figures 3 - 4 , Figure 3 which is a schematic diagram of the locked state of the alignment device. Figure 4 which is a schematic diagram of the unlocked state of the alignment device.

[0075] When the alignment device 100 is in the locked state, please refer specifically to Figure 3 , the end of the handle 153 far from the third connection portion 163 inclines towards the direction close to the alignment member 121. At this time, the handle 153, the rocker 151 and the transmission rod 152 form a self-locking structure, and the relative positions among the three are fixed, which is beneficial to reducing the automatic sliding of the handle 153, and further reducing the occurrence of the automatic unlocking of the connection bracket 132. At the same time, the raised block 154 on the handle 153 abuts against the side of the rocker 151 far from the alignment member 121. Thus, in the locked state, the raised block 154 can be used to limit the rocker 151, so as to reduce the situation that the rocker 151 moves away from the alignment member 121 when the alignment member 121 bears the tightening force of the installation of the end plate 202, and further ensure that the alignment surface 1211 is fixed in position when the alignment device 100 is in the locked state.

[0076] When the external component is the battery cell assembly 270, after the alignment device 100 is in the locked state, the position of the rocker 151 is fixed. The battery cell assembly 270 can be pushed by the alignment surface 1211. The first spring 141 is gradually compressed between the guide sleeve 143 and the alignment member 121 to achieve elastic pushing. At this time, the position of the alignment surface 1211 remains unchanged, forming a reference surface. Subsequently, end plates 202 are respectively installed at the opposite ends of the battery cell assembly 270 along the third direction x, and the end plates 202 are made to contact the parts on the alignment surface 1211 that are not in contact with the battery cells 271, so as to align the positions of the end plates 202 and the battery cell assembly 270.

[0077] When the alignment device 100 is in the unlocked state, please refer specifically to Figure 4 , the end of the handle 153 away from the third connection 163 is inclined away from the alignment member 121. At this time, the handle 153 releases the self-locking with the rocker 151 and the transmission rod 152. At the same time, the raised block 154 on the handle 153 separates from the side of the rocker 151 away from the alignment member 121, thus being in the unlocked state. In this state, the rocker 151 has a certain range of movement, and then the alignment member 121 is allowed to move, facilitating the picking and placing of the battery cell assembly 270.

[0078] The above structure can use the alignment surface 1211 to align the positions of the battery cell assembly 270 and the end plates 202, thereby reducing the offset between the end plates 202 and the battery cell assembly 270, making both the end plates 202 and the battery cell assembly 270 contact the alignment surface 1211, thus improving the positional accuracy between the end plates 202 and the battery cell assembly 270, and further improving the accuracy of subsequent laser welding, so as to improve the structural reliability, stability and production safety of the battery cell assembly 270.

[0079] When the alignment device 100 is installed on the module carrier 200 for use, it is initially in the unlocked state. When the robotic arm places the battery cell assembly 270 on the module carrier 200 and reaches the extrusion station. First, the operator pushes the handle 153 to tilt towards the alignment member 121. At this time, the transmission rod 152 reaches the horizontal position, and the alignment member 121 is made to fit with the battery cell assembly 270 through the connecting bracket 132. Then, the handle 153 is pushed to continue tilting towards the alignment member 121, and the transmission rod 152 crosses the horizontal position. The rocker 151 compresses the first spring 141 to elastically push the alignment member 121 against the battery cell assembly 270. At this time, the alignment device 100 is in the locked state, as Figure 3 shown. At this time, the transmission rod 152, the connected rocker 151 and the handle 153 form self-locking, which can keep the position of the alignment device 100 fixed during the installation process. The position of the alignment surface 1211 remains unchanged, forming a reference surface.

[0080] After the alignment member 121 elastically pushes against the battery cell assembly 270, end plates 202 are installed at opposite ends of the battery cell assembly 270 in the third direction x, and the end plates 202 are made to contact the portions of the alignment surface 1211 that are not in contact with the battery cells 271, so that the end plates 202 and the battery cell assembly 270 are aligned based on the reference plane position, thereby reducing the offset between the end plates 202 and the battery cell group 270, ensuring that both the end plates 202 and the battery cell assembly 270 are located on the alignment surface 1211, and thus improving the positional accuracy between the end plates 202 and the battery cell assembly 270.

[0081] After the battery cell assembly 270 and the end plates 202 are assembled by extrusion to obtain the battery cell module 290, the operator pushes the handle 153 until the handle 153 tilts away from the alignment member 121, as Figure 4 shown. At this time, the transmission rod 152 is unlocked from the connected rocker 151 and the handle 153, enabling the rocker 151 to have a certain degree of freedom of movement, and further allowing the alignment member 121 to move, facilitating the removal of the battery cell module 290.

[0082] Please refer jointly to Figures 5 - 8 . Figure 6 is a schematic diagram of the alignment of the alignment surface of the alignment device, Figure 8 is a schematic diagram after the battery cell assembly and the end plates are installed.

[0083] The module carrier board 200 of this embodiment includes: a main carrier board 210, a module limiting mechanism 220, and two alignment devices 100. Among them, the alignment device 100 of this embodiment includes the alignment device 100 of any of the above embodiments. The module limiting mechanism 220 is installed on the main carrier board 210, and the module limiting mechanism 220 is adapted to carry the battery cell assembly 270 along the first direction z. The two alignment devices 100 are installed on the main carrier board 210. Along the second direction y, the two alignment devices 100 are located on one side of the module limiting mechanism 220; along the third direction x, the two alignment devices 100 are spaced apart. The first direction z, the second direction y, and the third direction x are perpendicular to each other pairwise. And a part of the alignment surface 1211 of one alignment device 100 is used to elastically push against the battery cell 271 at one end of the battery cell assembly 270; a part of the alignment surface 1211 of the other alignment device 100 is used to elastically push against the battery cell 271 at the other end of the battery cell assembly 270.

[0084] The main carrier board 210 is used to support the module limiting mechanism 220 and the two alignment devices 100. The module limiting mechanism 220 is used to carry the battery cell assembly 270, so that the battery cell assembly 270 can complete the installation production on the module limiting mechanism 220.

[0085] Please refer further to Figure 6, specifically, a part of the alignment surface 1211 is used to elastically push against the battery cell assembly 270, and the other part corresponds to the assembly position 280 of the end plate 202, so that the end plate 202 contacts the other part of the alignment surface 1211 during the assembly process, achieving the position alignment between the end plate 202 and the battery cell assembly 270, thereby reducing the offset between the end plate 202 and the battery cell assembly 270, ensuring that both the end plate 202 and the battery cell assembly 270 contact the alignment surface 1211, thus improving the position accuracy between the end plate 202 and the battery cell assembly 270, and further improving the structural reliability and safety of the battery cell module 290.

[0086] With the above structure, the module carrier board of this embodiment includes a main carrier board, a module limiting mechanism, and two alignment devices. The module limiting mechanism is installed on the main carrier board. The module limiting mechanism is adapted to carry the battery cell assembly along the first direction. The two alignment devices are installed on the main carrier board. Along the second direction, the two alignment devices are located on one side of the module limiting mechanism. Along the third direction, the two alignment devices are arranged at intervals. The first direction, the second direction, and the third direction are perpendicular to each other in pairs; wherein, a part of the alignment surface of one alignment device is used to elastically push against the battery cell at one end of the battery cell assembly; a part of the alignment surface of the other alignment device is used to elastically push against the battery cell at the other end of the battery cell assembly, thereby using the alignment device to achieve the position alignment between the battery cell assembly and the end plate, solving the offset problem of the end plate installation during the automated module extrusion process, being beneficial to improving the position accuracy between the end plate and the battery cell assembly, and further improving the structural reliability and safety of the battery cell module.

[0087] In some embodiments, the battery cell assembly 270 is a structural member composed of multiple battery cells 271 stacked and adhered in the third direction x. When the battery cell assembly 270 is carried by the module limiting mechanism 220, the projection of the battery cell assembly 270 on the main carrier board 210 is rectangular. The first direction z is the direction perpendicular to the plane where the main carrier board 210 is located. The second direction y is the direction parallel to the short side of the rectangular projection of the battery cell assembly 270, and the third direction x is the direction parallel to the long side of the rectangular projection of the battery cell assembly 270.

[0088] In some embodiments, the module limiting mechanism 220 and the two alignment devices 100 can both be detachably arranged on the main carrier board 210 by means of screw connection, so that when dealing with battery cell assemblies of different sizes and models, the positions of the module limiting mechanism 220 and the two alignment devices 100 on the main carrier board 210 can be adjusted for matching.

[0089] In some embodiments, please refer to Figure 5, the module limiting mechanism 220 includes: a module support plate 225, a first limiting member 221, and a second limiting member 222. The module support plate 225 is adapted to carry the battery cell assembly 270 along the first direction z. Along the second direction y, the first limiting member 221 is located on one side of the module support plate 225; along the second direction y, the second limiting member 222 is located on the side of the module support plate 225 away from the first limiting member 221.

[0090] Along the second direction y, the first limiting member 221 and the second limiting member 222 are respectively located on opposite sides of the module support plate 225, so that the battery cell assembly 270 carried on the module support plate 225 can be limited in the second direction y, reducing the occurrence of position deviation of the battery cell assembly 270.

[0091] In the above structure, through the setting of the module support plate 225, the battery cell assembly 270 is carried, and then through the setting of the first limiting member 221 and the second limiting member 222, the battery cell assembly 270 carried on the module support plate 225 is limited in the second direction y, which is beneficial to improving the position accuracy of the battery cell assembly 270 on the module support plate 225 and facilitating the subsequent installation and production of the battery cell assembly 270.

[0092] In some embodiments, the number of the first limiting member 221 and the second limiting member 222 can both be 1 or more, and can be specifically set based on actual needs, and will not be limited here.

[0093] In some embodiments, the module limiting mechanism 220 further includes: a third limiting member 223 and a fourth limiting member 224. Along the third direction x, the third limiting member 223 is located on one side of the module support plate 225 and is used to carry the end plate 202 at one end of the battery cell assembly 270. Along the third direction x, the fourth limiting member 224 is located on the side of the module support plate 225 away from the third limiting member 223 and is used to carry the end plate 202 at the other end of the battery cell assembly 270. Another part of the mating surface 1211 of one alignment device 100 is used to contact one end plate 202, and another part of the mating surface 1211 of the other alignment device 100 is used to contact the other end plate 202.

[0094] The third limiting member 223 and the fourth limiting member 224 are used to limit the height of the end plate 202. Place the end plate 202 on the third limiting member 223 or the fourth limiting member 224 so that the end plate 202 contacts the third limiting member 223 or the fourth limiting member 224, and then control the height of the end plate 202 through the height of the third limiting member 223 or the fourth limiting member 224, thereby realizing the height limitation of the end plate 202 in the first direction z.

[0095] With the above structure, the third limiting member 223 and the fourth limiting member 224 can reduce the offset between the battery cell assembly 270 and the end plate 202 in the first direction z, and then together with the alignment device 100, ensure the overall alignment between the battery cell assembly 270 and the end plate 202.

[0096] Through the combination of the alignment device 100, the third limiting member 223 and the fourth limiting member 224, the end plate 202 can be limited in the second direction y and the first direction z. And since the end plate 202 itself needs to be installed at the opposite ends of the battery cell assembly 270 in the third direction x, the position accuracy of the end plate 202 in the third direction x can be achieved through the contact between the end plate 202 and the battery cell assembly 270. Therefore, the combination of the above structures is beneficial to improving the position accuracy of the end plate 202 in the first direction z, the second direction y and the third direction x. The multi-directional limiting reduces the position offset of the end plate 202, which is beneficial to the accurate installation of the end plate 202.

[0097] In some embodiments, the module support plate 225, the first limiting member 221, the second limiting member 222, the third limiting member 223 and the fourth limiting member 224 can all be detachably arranged on the main carrier plate 210 by means of screw connection, so that when dealing with battery cell assemblies 270 of different sizes and models, the positions of the above components on the main carrier plate 210 can be adjusted for matching. Multiple mounting holes can be correspondingly arranged on the main carrier plate 210, so as to quickly locate and replace the mounting positions of the above components and quickly switch to adapt to battery cell assemblies 270 of different sizes and models. It can be compatible with battery cell assemblies 270 of different lengths and different capacities, and can also be compatible with dual-module products.

[0098] In a specific application scenario, please refer to Figure 7 , when the battery cell assembly 270 is placed on the module carrier plate 200, the battery cell assembly 270 is placed on the module support plate 225 along the first direction z. The third limiting member 223 and the fourth limiting member 224 are respectively located at the opposite ends of the battery cell assembly 270 along the third direction x and are arranged at intervals from the battery cell assembly 270; when installing the end plate 202, the two end plates 202 are respectively installed at the opposite ends of the battery cell assembly 270 along the third direction x, and the alignment surfaces 1211 of each alignment device 100 simultaneously contact the side edges of the corresponding end plate 202 and the corresponding side surfaces of the battery cell assembly 270, taking the alignment surface 1211 as a reference to align the positions of the battery cell assembly 270 and the end plate 202.

[0099] In a specific application scenario, an insulating plate is also clamped between the end plate 202 and the corresponding end of the battery cell assembly 270 for insulation.

[0100] In a specific application scenario, after the battery cell assembly 270 is placed on the module support plate 225, the operator adjusts the alignment device 100 to the locked state, so that a part of the alignment surface 1211 of the alignment device 100 elastically pushes against the battery cell assembly 270. Subsequently, end plates 202 are respectively installed on the opposite sides of the battery cell assembly 270 along the third direction x. The two end plates 202 are limited with reference to the third limiting member 223 and the fourth limiting member 224 in the first direction z, with reference to the positioning surface 1211 of the aligning member 121 in the second direction y, and with reference to the end of the battery cell assembly 270 in the third direction x. Then, they are pasted on the battery cell assembly 270 with double-sided adhesive. After the aligning member of the alignment device 100 is disengaged from the battery cell 271, the end does not displace relative to the battery cell 271. After the assembly is completed, the battery cell assembly 270 is further squeezed, sleeved with a steel strip, and the bus bar is installed to obtain the battery cell module 290.

[0101] Please further refer to Figure 8 , the end plates 202 are pasted on the opposite ends of the battery cell assembly 270 with double-sided adhesive. After the battery cell assembly 270 is squeezed, the end plates 202 and the battery cell assembly 270 are sleeved with a steel strip 203 together, and then are relatively fixed by the steel strip 203.

[0102] After the end plates 202 and the battery cell assembly 270 are fixed by the steel strip 203 or the end plates 202 are fixed by glue, the locked state of the alignment device 100 is released to the unlocked state, and the aligning member 121 is separated from both the end plates 202 and the battery cell assembly 270, facilitating the subsequent displacement of the battery cell assembly 270.

[0103] In some embodiments, a plurality of handles 240 can also be installed on the main carrier plate 210 to facilitate the movement of the main carrier plate 210. The handles 240 can be detachably arranged on the main carrier plate 210 by means of screw connection for position replacement.

[0104] In some embodiments, a bus bar tooling box 230 can also be installed on the main carrier plate 210 to assist in the installation of the bus bar. The bus bar tooling box 230 can be detachably arranged on the main carrier plate 210 by means of screw connection or adhesion for position replacement.

[0105] Please refer to Figure 9 , Figure 9 is a schematic structural diagram of an embodiment of the extrusion device provided by the present utility model.

[0106] The extrusion device 300 of this embodiment includes a workbench 320, a module carrier board 200, and an extrusion mechanism 310. The module carrier board 200 is installed on the workbench 320, and the module carrier board 200 includes the module carrier board 200 of any of the above embodiments. The extrusion mechanism 310 is fixedly installed on the workbench 320 and is used to extrude the end plate 202 and the battery cell assembly 270 on the module carrier board 200.

[0107] With the above structure, the extrusion device of this embodiment realizes the accurate alignment of the battery cell assembly and the end plate before extrusion by setting a module carrier board with an alignment device, thereby improving the structural stability and reliability of the battery module obtained after extrusion.

[0108] In a specific application scenario, the number of the extrusion mechanisms 310 is two, which are respectively arranged at opposite ends of the module carrier board 200 to extrude the end plates 202 at opposite ends of the battery cell assembly 270.

[0109] In a specific application scenario, the number of the extrusion mechanisms 310 is one, which is arranged at one end of the module carrier board 200, and a fixing plate (not shown in the figure) is arranged at the other end of the module carrier board 200, so as to apply force by combining the extrusion mechanism 310 and the fixing plate to extrude the end plates 202 at opposite ends of the battery cell assembly 270.

[0110] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A positioning device, characterized in that: Suitable for pushing out external components, including: base; A fixed bracket, the fixed bracket is fixedly arranged on the base; a connecting bracket, the connecting bracket being hinged to the fixing bracket; An alignment member, wherein the alignment member has an alignment surface; an elastic mechanism connecting the connecting bracket and the alignment member; The connecting bracket is used to drive the elastic mechanism and the alignment member to rotate relative to the fixed bracket when rotating, until a portion of the alignment surface elastically pushes against the external component.

2. The alignment device according to claim 1, wherein: The elastic mechanism includes a first spring, a guide sleeve and a screw; The guide sleeve is fixedly arranged on the connecting bracket; The guide sleeve, the first spring and the alignment member are arranged in sequence, and the screw rod passes through the guide sleeve and the first spring and is connected to the alignment member; The first spring abuts against both the guide sleeve and the alignment member.

3. The alignment device according to claim 2, characterized in that: The elastic mechanism further includes a second spring, wherein the second spring, the guide sleeve, the first spring and the alignment member are arranged in sequence; The screw rod is passed through the second spring. A nut is provided at one end of the screw rod away from the positioning member in the axial direction of the screw rod. The nut abuts against the second spring, and the second spring also abuts against the guide sleeve.

4. The alignment device according to claim 2 or 3, characterized in that: The connecting bracket includes: The rocker has a first connection and a second connection spaced apart from each other, the second connection being closer to the elastic mechanism than the first connection, and the first connection being hinged to the fixed bracket; an end of the rocker away from the first connection being fixed to the guide sleeve; The handle has a third connection point and a fourth connection point that are spaced apart, the third connection point is hinged to the fixed bracket; a line between the first connection point and the second connection point is intersected with a line between the third connection point and the fourth connection point; a transmission rod, one end of the transmission rod being hinged to the second connection, and the other opposite end of the transmission rod being hinged to the fourth connection; When the handle rotates, the transmission rod drives the rocker to rotate, and the transmission rod can rotate relative to the handle to have a locked state and an unlocked state.

5. The alignment device according to claim 4, characterized in that: The handle is provided with a first hollow section along the direction from the third connection point to the fourth connection point, and the rocker is provided through the first hollow section between the third connection point and the fourth connection point; The rocker is provided with a second hollow section, the second hollow section is provided with a second connection, one end of the transmission rod extends into the second hollow section and is hingedly connected to the second connection, and the other opposite end of the transmission rod extends into the first hollow section and is hingedly connected to the fourth connection; The transmission rod is provided with a protruding block, and the protruding block is used to abut against the rocker when the transmission rod is rotated to the locked state.

6. The alignment device according to claim 4, characterized in that: An end of the rocker away from the first connection forms an arc piece, and an inner ring of the arc piece is fitted with and fixed to the outer ring of the guide sleeve.

7. A module carrier, characterized in that: include: main carrier board; a module limiting mechanism, the module limiting mechanism being mounted on the main carrier board and being adapted to support the battery cell assembly along a first direction; Two alignment devices according to any one of claims 1 to 6, the two alignment devices being mounted on the main carrier, the two alignment devices being located on one side of the module limiting mechanism along the second direction, and the two alignment devices being spaced apart along the third direction, with the first direction, the second direction, and the third direction being perpendicular to each other; Part of the alignment surface of one alignment device is used to elastically push the battery cell at one end of the battery cell assembly; part of the alignment surface of another alignment device is used to elastically push the battery cell at the other end of the battery cell assembly.

8. The module carrier according to claim 7, characterized in that: The module limiting mechanism includes: a module support plate, the module support plate being adapted to support the battery core assembly along the first direction; a first limiting member, located on one side of the module support plate along the second direction; A second limiting member is located along the second direction on a side of the module support plate away from the first limiting member.

9. The module carrier according to claim 8, characterized in that: The module limiting mechanism also includes: a third limiting member, located on one side of the module support plate along the third direction and used to support the end plate at one end of the battery cell assembly; A fourth limiting member; along the third direction, the fourth limiting member is located on a side of the module support plate away from the third limiting member, and is used to support the end plate at the other end of the battery cell assembly; Another portion of the alignment surface of one alignment device is used to contact one end plate, and another portion of the alignment surface of another alignment device is used to contact the other end plate.

10. An extrusion device, characterized in that: include: Workbench; A module carrier, the module carrier being mounted on the workbench, the module carrier comprising the module carrier according to any one of claims 7 to 9; An extrusion mechanism is fixedly mounted on the workbench and is used to extrude the end plate on the module carrier and the battery core assembly.

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