Lithium battery PACK stacking device

Abstract

The utility model discloses a lithium battery PACK stacking device which comprises a stacking platform, the stacking platform is provided with a stacking space, the stacking space is a square space defined by a fixed baffle, an aligning baffle, a liftable release baffle and an extrusion baffle, the fixed baffle and the aligning baffle are oppositely arranged at intervals, the release baffle and the extrusion baffle are oppositely arranged at intervals, and the stacking space is a square space defined by the extrusion baffle and the discharging baffle. The aligning baffle can be driven by a driving mechanism I to move in the direction close to or away from the fixed baffle to correct the lithium battery blocks, the extruding baffle can be driven by a driving mechanism II to move in the direction close to or away from the releasing baffle to extrude the lithium battery blocks, and a conveying belt is arranged on the outer side of the releasing baffle and driven by a driving mechanism III to ascend and descend. And the control mechanism is in communication connection with the driving mechanism I, the driving mechanism II and the driving mechanism III. Therefore, the problem of stacking dislocation caused by non-aligned or non-parallel side surfaces of the lithium battery blocks is solved, the welding rate of finished products influenced by skew pole columns is improved, and the safety of delivered products is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery assembly technical field especially relates to a lithium battery PACK stacking device. BACKGROUND

[0002] Battery stacking is the first assembly station of module PACK (lithium battery PACK mainly relates to the process of assembling lithium battery cell into battery pack, usually refers to the power battery pack formed by a plurality of single batteries) production, and the quality of stacking directly affects the subsequent welding quality. The traditional lithium battery stacking is stacked into a module by artificial welding assembly, and the stacking mode is inefficient and prone to cause the lithium battery post-welding module skew. When stacking into a module, the cumulative dimensional tolerance formed by a plurality of battery groups cannot be pressed into the process size by extrusion force, resulting in the length of the whole module being too long or too short, the end plate hole and the PACK box positioning hole being dislocated and unable to be assembled, so that the next production process cannot be continued, the module is disassembled or the welding is deviated to cause the defective scrap, directly leading to the loss of production cost and affecting the production capacity and delivery rate. SUMMARY

[0003] In order to solve the technical problems in the background art, the utility model provides a lithium battery PACK stacking device.

[0004] The utility model discloses a lithium battery PACK stacking device, including the stacking platform, be equipped with on the stacking platform:

[0005] Stacking space: the square space surrounded by fixed baffle, the alignment baffle, the liftable release baffle and the extrusion baffle, the fixed baffle and the alignment baffle are oppositely arranged, the release baffle and the extrusion baffle are oppositely arranged, the alignment baffle can be moved in the direction of approaching or away from the fixed baffle under the drive of drive mechanism I, and corrects the lithium battery block, the extrusion baffle can be moved in the direction of approaching or away from the release baffle under the drive of drive mechanism II, and extrudes the lithium battery block, the outside of the release baffle is equipped with the conveyer belt and is lifted by drive mechanism III;

[0006] Control mechanism, with drive mechanism I, drive mechanism II and drive mechanism III can be communicatively connected.

[0007] The problem of stacking misalignment caused by the misalignment or non-parallel of the lithium battery block is solved, the finished product welding rate affected by the pole skew is improved, and the safety of the delivered product is ensured.

[0008] Preferably, the driving mechanism I comprises a driving motor I and a transmission mechanism I, the output end of the transmission mechanism I is fixed with the outer end of the jiaoqi baffle, the driving motor I is started, and the jiaoqi baffle is driven to move through the transmission mechanism I.

[0009] Preferably, the driving mechanism II comprises a driving motor II and a transmission mechanism II, the output end of the transmission mechanism II is fixed with the outer end of the extrusion baffle, the driving motor II is started, and the extrusion baffle is driven to move through the transmission mechanism II.

[0010] Preferably, the driving mechanism III is a jacking cylinder, the jacking cylinder is installed below the release baffle, and the output end of the jacking cylinder is fixed with the lower end of the release baffle.

[0011] Preferably, the control mechanism is a control cabinet located at the lower end of the stacking platform, the upper part of the control cabinet is provided with a control unit core PLC, a relay module is arranged directly below the PLC, an air switch is arranged at the upper left of the control cabinet, and a switching power supply is arranged directly below the air switch.

[0012] The PLC controller has strong anti-interference ability, is stable and reliable in an industrial environment, and is easy to maintain.

[0013] Preferably, the front of the control cabinet is provided with three button boxes arranged in a straight line, and the three button boxes are two equipment emergency stop buttons and machine operation buttons.

[0014] Preferably, the transmission mechanism II comprises:

[0015] A lead screw is connected with the push rod of the driving motor II;

[0016] A sliding block is connected with the extrusion baffle, is provided with an internal thread in threaded connection with the lead screw, is driven to rotate by the driving motor II, and rotates to convert the rotary motion into linear motion, so as to drive the sliding block to move linearly along the lead screw, and drive the extrusion baffle to move linearly, so as to extrude the lithium battery module.

[0017] Preferably, a counting sensor in communicable connection with the control mechanism is arranged directly above the extrusion baffle, and the counting sensor counts the number of lithium battery blocks in the stacking space through photoelectric induction.

[0018] In summary, the utility model has the following beneficial effects: through the extrusion baffle and the jiaoqi baffle, the flatness of the lithium battery module is corrected; through the conveying belt, the problem of long connection time of front and rear processes is solved, so that the problem of stacking misplacement caused by misalignment or non-parallel of the lithium battery block is solved, the product welding rate affected by the inclined pole is improved, and the safety of the delivered product is ensured.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a perspective view of a lithium battery PACK stacking device according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the control cabinet of the lithium battery PACK stacking device according to an embodiment of the present invention;

[0022] Figure 3 This is a control flowchart of a lithium battery PACK stacking device according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Stacking platform; 2. Fixed baffle; 3. Clamping baffle; 4. Release baffle; 5. Squeezing baffle; 6. Drive motor I; 7. Drive motor II; 8. Lead screw; 9. Slider; 10. Control cabinet; 11. PLC; 12. Relay module; 13. Switching power supply; 14. Control panel; 15. Button box; 16. Counting sensor; 17. Unpowered roller conveyor line. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] like Figures 1-2 As shown, this embodiment proposes a lithium battery PACK stacking device, including a stacking platform 1, on which:

[0027] Stacking space: A square space enclosed by a fixed baffle 2, a shunting baffle 3, a liftable release baffle 4, and a compression baffle 5. The fixed baffle 2 and the shunting baffle 3 are arranged opposite each other at intervals, and the release baffle 4 and the compression baffle 5 are arranged opposite each other at intervals. The shunting baffle 3 can move in the direction of approaching or moving away from the fixed baffle 2 under the drive of the drive mechanism I to correct the lithium battery block. The compression baffle 5 can move in the direction of approaching or moving away from the release baffle 4 under the drive of the drive mechanism II to compress the lithium battery block. A conveyor belt is provided on the outside of the release baffle 4 and is lifted and lowered by the drive mechanism III.

[0028] The control mechanism can be communicatively connected to drive mechanism I, drive mechanism II, and drive mechanism III.

[0029] Specifically, the rear end of the conveying belt is provided with a non-powered roller transmission line 17, that is, the non-powered roller transmission line 17 is located directly in front of the release baffle 4, and the non-powered roller transmission line 17 is tightly connected with the shaft outer tooth and the inner nut, so that the assembly process time is reduced and the production efficiency is improved.

[0030] In this way, the correction of the flatness of the lithium battery module is realized through the extrusion baffle 5 and the alignment baffle 3; through the conveying belt, the problem of long connection time between the front and rear processes is reduced, so that the problem of stacking misalignment caused by the misalignment or non-parallel of the lithium battery block is solved, the product welding rate affected by the pole column skew is improved, and the safety of the delivered product is ensured.

[0031] Further, the driving mechanism I includes a driving motor I 6 and a transmission mechanism I, the output end of the transmission mechanism I is fixed with the outer end of the alignment baffle 3, and the driving motor I 6 is started to drive the alignment baffle 3 to move through the transmission mechanism I. Specifically, the transmission mechanism I is used to convert the rotation of the driving motor I 6 into the linear motion of the alignment baffle 3, and the specific structure of the transmission mechanism I can refer to the existing structure, such as a threaded screw structure, and will not be repeated here. It should be noted that the driving mechanism I can also be a telescopic air cylinder, the output end of the telescopic air cylinder is fixed with the outer end of the alignment baffle 3, and the telescopic function of the telescopic air cylinder is used to correct the alignment of the lithium battery module. Of course, it can also be other structures, which is determined according to the specific situation.

[0032] At the same time, the driving mechanism II includes a driving motor II 7 and a transmission mechanism II, the output end of the transmission mechanism II is fixed with the outer end of the extrusion baffle 5, and the driving motor II 7 is started to drive the extrusion baffle 5 to move through the transmission mechanism II.

[0033] Specifically, the transmission mechanism II includes:

[0034] A lead screw 8 connected with the push rod of the driving motor II 7;

[0035] A sliding block 9 connected with the extrusion baffle 5 and provided with an internal thread threadedly connected with the lead screw 8, the rotation of the lead screw 8 is driven by the forward and reverse rotation of the driving motor II 7, the rotary motion is converted into linear motion, and the sliding block 9 is driven to move linearly along the lead screw 8 to push the extrusion baffle 5 to move linearly, so as to extrude the lithium battery module.

[0036] Among them, the extrusion baffle 5 is provided with a counting sensor 16 in communication connection with the control mechanism above it, and the counting sensor 16 counts the number of lithium battery blocks in the stacking space through photoelectric sensing.

[0037] In this embodiment, the control mechanism is provided as a control cabinet 10 located at the lower end of the stacking platform 1. The upper part of the interior of the control cabinet 10 is provided as a control unit core PLC 11. The PLC 11 is provided directly below a relay module 12. An air switch is provided at the upper left of the control cabinet 10. In the event of overload, short circuit, undervoltage, and other situations of the line and load, the air switch rapidly breaks the circuit to provide reliable protection. The air switch is provided directly below a switching power supply 13, which provides stable and reliable 24V DC power to the PLC 11. At the same time, the control mechanism also includes a control panel 14.

[0038] Further, three button boxes 15 arranged in a straight line are mounted on the front of the control cabinet 10. The three button boxes 15 are respectively two device emergency stop buttons and machine operation buttons. Specifically, the device emergency stop buttons are arranged on the side facing the operator, facilitating emergency handling in emergency situations.

[0039] Further, the driving mechanism III is provided as a jacking cylinder. The jacking cylinder is installed below the release baffle 4, and the output end of the jacking cylinder is fixed to the lower end of the release baffle 4. The jacking cylinder drives the release baffle 4 to move up and down. Specifically, the jacking cylinder is placed in the control cabinet 10. The release baffle 4 is connected to the jacking cylinder through a Y-shaped connection, ensuring the synchronization of the lifting of the release baffle 4.

[0040] In addition, device indicator lights can also be provided. For example, when the green light is on, the stacking is complete and the welding starts. When the release indicator light is on, the release baffle 4 is raised, and the alignment baffle 3 and the extrusion baffle 5 are reset.

[0041] In summary, the control mechanism controls the release of the baffle 4 to rise. The lithium battery block is transported into the stacking space through the conveyor belt. The sensor counter detects the set number of lithium battery blocks. The alignment baffle corrects the lithium battery block under the action of the driving motor I 6. The extrusion baffle 5 extrudes the lithium battery block under the action of the driving motor II 7. When the control mechanism meets the pre-set extrusion process parameters, the device indicator light displays a green light. The operator installs the welding plate to fix the lithium battery module. The release indicator light is pressed. The jacking cylinder is started to lift the release baffle 4. The alignment baffle 3 and the extrusion baffle 5 are reset. The lithium battery module flows to the next process through the conveyor belt.

[0042] In this embodiment, the PLC 11 controls the operation of the drive motor I 6 and the drive motor II 7 through the stepping driver. The moving distance, speed and direction of the alignment baffle 3 and the extrusion baffle 5 are set on the control panel 14. After the PLC 11 reads these set values, it generates pulse and direction signals through operation to control the drive motor I 6 and the drive motor II 7, thereby realizing the alignment and extrusion of the lithium battery module. The PLC 11 is connected with the counting sensor 16 through the RS485 line to convert the detected analog signal into a digital signal. The left side of the PLC 11 is a 24V switching power supply 13. The switching power supply 13 controls the on-off of the current through the switching tube under the action of the high-frequency oscillation circuit to form a high-frequency pulse current. Under the action of the inductor, the PLC 11 is provided with output stable low-voltage direct current. The relay module 12 is below the PLC 11. The switching value output of the PLC 11 is directly connected in series with the coil of the intermediate relay. When the switching value of the PLC 11 has output, the coil of the intermediate relay is powered, and the coil attraction will drive the action of the contact. The normally open contact of the intermediate relay is connected in series with the coil of the AC contactor and then connected in series with the corresponding power supply. When the PLC 11 outputs, the intermediate relay acts to drive the contact to act, and the coil of the AC contactor is attracted, so that the starting of the motor and other actions can be completed. The left side of the relay module 12 is a terminal. The terminal is used to connect the lines of the in-screen device and the out-screen device to play the role of signal (current and voltage) transmission. The terminal makes the connection beautiful and convenient to maintain. When the lines are connected at a long distance, the connection is mainly firm, and the construction and maintenance are convenient.

[0043] As shown in Figure 3 , the implementation steps of the lithium battery PACK stacking device in this embodiment include:

[0044] S1: After the PLC 11 is powered on, the system is initialized, the counter sensor is cleared, and the control of the lifting cylinder, the drive motor I 6 and the drive motor II 7 is reset;

[0045] S2: The PLC 11 receives the signal of the lithium battery block entering from the previous process, starts the load flow line, and the lithium battery block enters the stacking space from the conveyor belt;

[0046] S3: The counting sensor 16 counts the inflowing lithium battery block through photoelectric sensing. When the number of inflowing lithium battery blocks reaches the set value, the program enters the next process;

[0047] S4: The PLC 11 triggers the command voltage output, the electromagnetic valve coil is powered, the contact is attracted, the drive motor I 6 drives the alignment baffle to extend, and the lithium battery block is corrected;

[0048] S5, after the correction is completed, the drive motor II 7 drives the extrusion baffle 5 to extrude the lithium battery.

[0049] S6, the extrusion pressure reaches the set value R;

[0050] S7, the operation indicator light is turned on, and the extrusion action is stopped;

[0051] S8: manually buckle the lithium battery module corrected and completed by extrusion;

[0052] S9, the PLC 11 controls the lifting cylinder to drive the release baffle 4 to descend, and manually pushes the lithium battery module to flow to the next process.

[0053] It should be noted that the various baffles in the embodiment are all selected to be insulating rubber plates, which have the advantages of good elasticity, good anti-skid function, good waterproofness, easy padding, etc. According to the voltage breakdown level, a 5mm-thick insulating rubber plate with a specific gravity of 6Kg / m2 is selected.

[0054] It should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0055] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0056] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0057] In the utility model, unless another definite provision and limitation, first feature is on second feature "on" or "under" can be first and second feature direct contact, or first and second feature indirectly contact through intermediate medium. Moreover, first feature is on second feature "on", "above" and "on" can be first feature is on second feature directly or obliquely, or only indicate first feature horizontal height is higher than second feature. First feature is on second feature "under", "below" and "under" can be first feature is on second feature directly or obliquely, or only indicate first feature horizontal height is less than second feature.

[0058] The above merely describes a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A lithium battery PACK stacking device comprising a stacking platform, characterized in that, The stacking platform is provided with: Stacking space: a square space surrounded by a fixed baffle, a straightening baffle, a liftable release baffle and a pressing baffle, the fixed baffle and the straightening baffle are oppositely arranged, the release baffle and the pressing baffle are oppositely arranged, the straightening baffle can move towards or away from the fixed baffle under the drive of the drive mechanism I to correct the lithium battery block, the pressing baffle can move towards or away from the release baffle under the drive of the drive mechanism II to press the lithium battery block, the outside of the release baffle is provided with a conveying belt and is driven to lift by the drive mechanism III; The control mechanism is communicatively connected with the drive mechanism I, the drive mechanism II and the drive mechanism III.

2. The lithium battery PACK stacking device according to claim 1, characterized by, The drive mechanism I includes a drive motor I and a transmission mechanism I, the output end of the transmission mechanism I is fixed with the outer end of the straightening baffle, the drive motor I is started to drive the straightening baffle to move through the transmission mechanism I.

3. The lithium battery PACK stacking device according to claim 1, characterized by, The drive mechanism II includes a drive motor II and a transmission mechanism II, the output end of the transmission mechanism II is fixed with the outer end of the pressing baffle, the drive motor II is started to drive the pressing baffle to move through the transmission mechanism II.

4. The lithium battery PACK stacking apparatus according to claim 1, characterized by, The drive mechanism III is a jacking cylinder, which is installed below the release baffle, and its output end is fixed with the lower end of the release baffle.

5. The lithium battery PACK stacking device according to claim 1, wherein, The control mechanism is a control cabinet located at the lower end of the stacking platform, the upper part of the inside of the control cabinet is a control unit core PLC, the relay module is located directly below the PLC, the air switch is located at the upper left of the control cabinet, and the switching power supply is located directly below the air switch.

6. The lithium battery PACK stacking device according to claim 5, wherein, The front of the control cabinet is provided with three button boxes arranged in a straight line, and the three button boxes are two equipment emergency stop buttons and machine operation buttons.

7. The lithium battery PACK stacking device according to claim 3, characterized by, The transmission mechanism II includes: A lead screw connected with the push rod of the drive motor II; A sliding block connected with the pressing baffle and provided with an internal thread threadedly connected with the lead screw, the drive motor II is reversely driven to rotate the lead screw, the rotary motion is converted into linear motion, and the sliding block is driven to move linearly along the lead screw to push the pressing baffle to move linearly, thereby pressing the lithium battery module.

8. The lithium battery PACK stacking device according to claim 7, characterized by, A counting sensor communicatively connected with the control mechanism is arranged directly above the pressing baffle, and the counting sensor counts the number of lithium battery blocks in the stacking space through photoelectric sensing.

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