Battery pack automatic feeding and discharging edge sealing machine

Abstract

The automatic feeding and discharging edge sealing machine for the battery pack comprises a sealing table plate, a sealing layer plate is arranged on one end portion of the sealing table plate, the sealing table plate is connected with the sealing layer plate through a guide column, two parallel linear sliding modules are arranged on the sealing table plate, a lead screw bearing assembly is arranged on the outer side of one linear sliding module, and the other lead screw bearing assembly is arranged on the outer side of the other linear sliding module. The lead screw bearing assembly is connected with a feeding and discharging servo motor, the two linear sliding modules are jointly connected with a battery pack feeding and discharging mechanism, and the battery pack feeding and discharging mechanism and the lead screw bearing assembly are connected and installed. The automatic sealing device has the advantages of being high in feeding and discharging efficiency, high in sealing efficiency, good in sealing effect and high in automatic operation degree. The problem that poisonous gas is easily generated and is easily directly inhaled into a human body by an operator to cause injury to the body when the seal head is heated to a specified temperature before the top side of the lithium battery is sealed in the market is effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of edge banding machines, in particular to an automatic loading and unloading edge banding machine for battery packs. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use place high demands on the environment. With the advancement of science and technology, lithium batteries have become mainstream.

[0003] The production and processing of lithium batteries requires a series of steps. The top and side sealing process is the first step in the processing of soft-pack lithium-ion cells. The top and side sealing process actually consists of two steps: top sealing and side sealing. Due to the large number and variety of lithium battery models, when the demand for a single order cannot meet the continuous production, the top and side heads need to be frequently adjusted. Manual adjustment of the top and side heads is prone to inaccurate head positioning and misalignment of the upper and lower heads, which seriously affects the sealing effect of the soft-pack lithium-ion cells. In addition, before the top and side sealing of the soft-pack lithium-ion battery, the soft-pack lithium-ion battery must be placed on the sealing positioning fixture. Even if the worker wears heat-resistant gloves, it is still easy to burn the arm and cause work-related injuries. This operation is unsafe. In addition, the head needs to be heated to a specified temperature before the top and side sealing of the lithium battery is performed. This process easily generates toxic gases. If these toxic gases are directly inhaled by the human body, they can cause harm to the operator. To solve this series of problems, we have proposed an automatic loading and unloading edge sealing machine for battery packs. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automatic loading and unloading edge sealing machine for battery packs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: the battery pack automatic loading and unloading edge sealing machine includes a sealing table, a sealing layer is provided on one end of the sealing table, the sealing table is connected and installed with the sealing layer through a guide column, and two parallel linear sliding modules are provided on the sealing table, one of which is provided with a screw bearing assembly on the outside of the linear sliding module, and the screw bearing assembly is connected to a loading and unloading servo motor, and the two linear sliding modules are commonly connected to a battery pack loading and unloading mechanism, and the battery pack loading and unloading mechanism is connected and installed with the screw bearing assembly.

[0006] A loading and unloading servo motor is used to drive the battery pack loading and unloading mechanism through a screw bearing assembly to slide back and forth on two linear sliding modules to load and unload the battery pack, so that the battery pack loading and unloading mechanism can move the battery pack forward and transport it to the processing station of the side sealing mechanism and to the processing stations of the first top sealing mechanism and the second top sealing mechanism, or move backward to withdraw from the processing stations of the first top sealing mechanism and the second top sealing mechanism and withdraw from the processing station of the side sealing mechanism.

[0007] Preferably, a side sealing mechanism is provided on one end of the sealing layer plate close to the battery pack loading and unloading mechanism.

[0008] The side sealing mechanism can seal the aluminum-plastic film on the side of the battery pack.

[0009] Preferably, a first opening and clamping mechanism and a second opening and clamping mechanism are respectively provided on both sides of the side sealing mechanism.

[0010] The first clamping mechanism and the second clamping mechanism are used to synchronously drive the battery pack loading and unloading mechanism to open the clamp.

[0011] Preferably, a first top sealing mechanism and a second top sealing mechanism are respectively provided on the two end portions adjacent to the end portion of the sealing layer plate provided with a side sealing mechanism. The first top sealing mechanism and the second top sealing mechanism are arranged opposite to each other, and the spacing between the first top sealing mechanism and the second top sealing mechanism is adjusted to adapt to the sealing of the aluminum-plastic film on both sides of the top and bottom of battery packs of different sizes.

[0012] Preferably, the battery pack loading and unloading mechanism includes a lifting part provided on the linear sliding module for lifting the battery pack, a positioning part for positioning and fixing the battery pack is provided above the lifting part, and a pressing part for pressing and fixing the battery pack is provided above the positioning part.

[0013] The lifting part includes a movable plate arranged on a linear sliding module, a battery pack lifting cylinder is provided on the movable plate, a first guide rod bearing assembly and a second guide rod bearing assembly are respectively provided on both sides of the battery pack lifting cylinder, and the first guide rod bearing assembly and the second guide rod bearing assembly are respectively installed on the movable plate.

[0014] The positioning part includes a positioning platform, the upper ends of the first guide rod bearing assembly and the second guide rod bearing assembly and the output end of the battery pack lifting cylinder are commonly connected to the positioning platform, a hollow portion is provided in the center of the positioning platform, a lap plate is extended toward the hollow portion by the positioning platform, a battery pack positioning jig is provided on the lap plate, the battery pack positioning jig is located in the hollow portion, and the two ends adjacent to the end portion of the positioning platform where the lap plate is provided are respectively provided with tab positioning jigs, and the tab positioning jig is fixed to the positioning platform through a jig mounting plate.

[0015] By adopting the above technical solution, when the battery pack is pressed against the battery pack positioning jig by the pressing portion, the two tab positioning jigs can respectively position the tabs at both ends of the battery pack.

[0016] The pressing part includes a pressing bearing arranged on one end of the positioning table facing the sealing layer plate, and there are more than two pressing bearings. A pressing shaft is provided that movably passes through the pressing bearing, and pressing handles are provided on both ends of the pressing shaft. There is more than one pressing assembly above the battery pack positioning jig, and the pressing assembly is connected and installed with the pressing shaft. The pressing assembly rotates with the pressing shaft as the center to realize the pressing assembly to tighten or loosen the battery pack on the battery pack positioning jig.

[0017] By adopting the above-mentioned technical solution, when the battery pack is placed on the battery pack positioning fixture, the pressing assembly presses the battery pack under the tension of the tension spring, and the loading and unloading servo motor drives the battery pack loading and unloading mechanism to move to the side sealing station of the side sealing mechanism and the top sealing station between the first top sealing mechanism and the second top sealing mechanism through the screw bearing assembly to position the side seal and top seal of the battery pack. During the transportation of the battery pack, the battery pack lifting cylinder of the battery pack loading and unloading mechanism drives the positioning platform to rise to lift the battery pack so that the battery pack crosses the lower side sealing assembly, which realizes fully automatic pressing, positioning and loading and conveying of the battery pack to avoid the phenomenon of burns on the arms when loading the battery pack manually, making the loading and unloading operations of the battery pack more efficient and safer.

[0018] Preferably, the pressing assembly includes a pressing plate mounting plate, a pressing plate is mounted on one end of the pressing plate mounting plate, the other end of the pressing plate mounting plate is connected and mounted to the pressing shaft, a tension spring is connected between the pressing plate mounting plate and the positioning platform, and the tension spring provides tension to the pressing plate to press the battery pack on the battery pack positioning jig.

[0019] Preferably, the first clamping mechanism comprises an opening cylinder mounted on the sealing plate, with a first connector provided at the output end of the opening cylinder. One end of the first connector is connected to the output end of the opening cylinder, and the other end of the first connector is mounted on a linear bearing, which is sleeved onto a guide post. A gasket is provided below the first connector and cooperates with the pressure handle. The structure of the second clamping mechanism is mirror-symmetrical to that of the first, and the operating principle of the second clamping mechanism is the same as that of the first.

[0020] An opening cylinder is used to drive the first connector and gasket downward along the guide post. The downward-moving gasket presses the pressure handle to drive it to rotate clockwise. The rotating pressure handle drives the pressing shaft to rotate synchronously clockwise to drive the pressing part to flip upward. The upward-flipping pressing part releases its pressure on the battery pack to facilitate the placement of battery packs to be sealed or the removal of sealed battery packs. Conversely, when the opening cylinder drives the first connector and gasket upward along the guide post, the gasket releases its pressure on the pressure handle. The pressing shaft rotates counterclockwise due to the tension of the tension spring and resets, causing the pressure handle and pressure plate to rotate and reset accordingly. Finally, the pressing part of the battery pack loading and unloading mechanism resets and presses the battery pack placed on the battery pack positioning fixture.

[0021] Preferably, the side sealing mechanism includes a side sealing cylinder arranged on the sealing layer plate, a third guide rod bearing assembly and a fourth guide rod bearing assembly are respectively provided on both sides of the side sealing cylinder, a first cylinder mounting plate is provided between the side sealing cylinder and the sealing layer plate, the third guide rod bearing assembly, the fourth guide rod bearing assembly and the side sealing cylinder are fixed to the sealing layer plate through the first cylinder mounting plate, the lower ends of the third guide rod bearing assembly and the fourth guide rod bearing assembly and the output end of the side sealing cylinder are commonly connected with an upper side sealing assembly, a lower side sealing assembly is provided on the sealing plate, the upper side sealing assembly and the lower side sealing assembly are arranged opposite to each other, and the side sealing cylinder drives the upper side sealing assembly to move downward to seal the aluminum-plastic film on the side of the battery pack.

[0022] There are several side sealing cylinders.

[0023] The upper side sealing assembly includes a first fixed seat, a first heating seat, a first heating tube and a first head. The first fixed seat, the first heating seat and the first head are connected and installed in sequence from top to bottom. The first heating tube runs horizontally through the first heating seat. The upper part of the first fixed seat is connected and installed with the output end of the side sealing cylinder.

[0024] The lower side sealing assembly includes a second fixed seat, a second heating seat, a second heating tube and a second head. The second head, the second heating seat and the second fixed seat are connected and installed in sequence from top to bottom. The second heating tube runs horizontally through the second heating seat. The second fixed seat is installed on the sealing plate. Side sealing glue discharge grooves are respectively provided at both ends of the second head.

[0025] A side seal cylinder drives the upper side seal assembly downward. The downwardly moving upper side seal assembly closes with the lower side seal assembly, causing the upper side seal assembly's first seal head to move downward and close with the lower side seal assembly's second seal head. The first heating tube heats the first seal head, while the second heating tube heats the second seal head. As the first seal head moves toward the second seal head, it compresses and seals the aluminum-plastic film on the battery pack's side. Glue that overflows during the sealing process is discharged through the side seal glue drain groove to avoid affecting the battery pack's side seal. The structural design of the side seal mechanism enables automatic compression and sealing of the aluminum-plastic film on the sides of battery packs delivered to its workstation, resulting in high sealing efficiency, excellent sealing results, and a high degree of automation.

[0026] Preferably, the first top sealing mechanism includes a top sealing cylinder arranged on the sealing layer plate, a fifth guide rod bearing assembly and a sixth guide rod bearing assembly are respectively provided on both sides of the top sealing cylinder, a second cylinder mounting plate is provided between the top sealing cylinder and the sealing layer plate, the fifth guide rod bearing assembly, the sixth guide rod bearing assembly and the top sealing cylinder are fixed to the sealing layer plate through the second cylinder mounting plate, the lower ends of the fifth guide rod bearing assembly and the sixth guide rod bearing assembly and the output end of the top sealing cylinder are commonly connected with an upper top sealing assembly, and the first guide bar and the second guide bar are respectively installed on the side edges of both ends of the second cylinder mounting plate, an upper positioning assembly is provided between the first guide bar and the second guide bar, the upper positioning assembly is connected and installed with the second cylinder mounting plate, and a positioning groove is provided on the second cylinder mounting plate.

[0027] The first guide bar and the second guide bar are used to guide and limit the second cylinder mounting plate, and the upper positioning assembly positions and adjusts the position of the upper top sealing assembly on the sealing layer plate. The fixed position of the upper top sealing assembly on the sealing layer plate is adjusted by fixing bolts and positioning grooves.

[0028] There are several positioning grooves.

[0029] A lower top sealing assembly is installed on the sealing platen and is arranged opposite to the upper top sealing assembly. A third guide bar and a fourth guide bar are respectively installed on both sides of the lower top sealing assembly and are arranged in parallel. A lower positioning assembly is provided between the third guide bar and the fourth guide bar. The lower positioning assembly is connected to the lower top sealing assembly, and the position of the lower top sealing assembly on the sealing platen is positioned and adjusted by the lower positioning assembly.

[0030] Preferably, the upper top sealing assembly includes a third fixed seat, a third heating seat and a third head connected in sequence from top to bottom, the lower ends of the fifth guide rod bearing assembly and the sixth guide rod bearing assembly and the output end of the top sealing cylinder are commonly connected to the third fixed seat, a third heating tube is provided horizontally through the third heating seat, and a pole ear upper head is provided on one side of the third head.

[0031] The two ends of the tab upper seal are respectively connected with guide pins, the two guide pins are movable and vertically penetrate the tab upper seal, and the two guide pins are both sleeved with springs.

[0032] The top sealing cylinder is used to drive the upper top sealing assembly to move downward and close with the lower top sealing assembly. The process of the upper top sealing assembly moving toward the lower top sealing assembly can compress the tabs on the battery pack transmitted to its workstation. The spring buffers the pressure on the upper tab head. The upper tab head adapts to the shape of the upper surface of the tab, making the upper tab head press the upper surface of the tab more closely, and the compression effect is good.

[0033] Preferably, the upper positioning assembly includes a nut seat and a second connecting piece arranged opposite to each other, a positioning bolt is threadedly connected to the nut seat, an annular groove is provided on the end of the screw rod of the positioning bolt, a connecting slot hole is vertically passed through the second connecting piece, and a connecting groove is provided in the connecting slot hole extending outward toward the nut seat, and the connecting groove of the second connecting piece is adapted to be installed in the annular groove of the positioning bolt.

[0034] The structure and working principle of the lower positioning assembly are the same as those of the upper positioning assembly.

[0035] The second connecting piece is connected and installed with the second cylinder mounting plate, and the positioning bolt is twisted to pull or push the second connecting piece to drive the second cylinder mounting plate to move to achieve positioning and adjustment of the position of the upper top sealing assembly on the sealing layer plate.

[0036] Preferably, the lower top seal assembly includes a fourth head, a fourth heating seat and a fourth fixed seat connected and installed in sequence from top to bottom, a fourth heating tube is provided transversely through the fourth heating seat, top seal glue removal grooves are provided at both ends of the fourth head, a lower head of the pole lug is provided on one side of the fourth head, and the lower head of the pole lug is arranged opposite to the upper head of the pole lug.

[0037] The fourth fixed seat is connected and installed with the lower positioning assembly, and the position of the lower top sealing assembly on the sealing plate is positioned and adjusted by the lower positioning assembly. The relative position between the upper top sealing assembly and the lower top sealing assembly is fine-tuned by the upper positioning assembly, so that the relative alignment of the upper top sealing assembly and the lower top sealing assembly is more accurate, thereby avoiding the phenomenon that the upper and lower heads are easily misaligned due to manual adjustment of the position of the head on the market. It makes the relative positioning adjustment of the upper and lower top sealing assemblies more efficient and more accurate.

[0038] Preferably, the structure and working principle of the second top sealing mechanism are the same as those of the first top sealing mechanism.

[0039] By adopting the above-mentioned technical solution, the upper positioning assembly fine-tunes the spacing between the second top sealing mechanism and the first top sealing mechanism to adapt to sealing the aluminum-plastic film on the top and bottom sides of battery packs of different specifications. Since the third heating tube of the upper top sealing assembly can heat and raise the temperature of the third head, and the fourth heating tube of the lower top sealing assembly can heat and raise the temperature of the fourth head at the same time, when the upper top sealing assembly moves downward, it can drive the third head downward and close with the fourth head. The closed third and fourth heads simultaneously heat the tabs during the process of sealing the aluminum-plastic film on the top of the battery pack. This avoids the situation where the first and second top sealing mechanisms independently heat the aluminum-plastic film on both sides of the tab, but due to the heat dissipation and cooling of the tab, the aluminum-plastic film cannot reach the temperature required for the hot-melt seal, resulting in the aluminum-plastic film on both sides of the tab being loose. The structural design of the first and second top sealing mechanisms not only has the advantages of strong versatility, high sealing efficiency and good sealing effect, but also reduces maintenance costs.

[0040] Preferably, a controller or control system is provided for signal control of the loading and unloading servo motor, the battery pack loading and unloading mechanism, the side sealing mechanism, the first clamping mechanism, the second clamping mechanism, the first top sealing mechanism and the second top sealing mechanism. The controller is a PLC programmable logic controller. The PLC programmable logic controller can adopt a programmable logic controller of model XDS-40T-D, but is not limited to this.

[0041] It should be noted that the linear sliding module mainly includes a guide rail and a slider that slides on the guide rail. The screw bearing assembly mainly includes a bearing mount and a ball screw that passes through the bearing mount. The ball screw is connected and installed to the output end of the loading and unloading servo motor. The first guide rod bearing assembly, the second guide rod bearing assembly, the third guide rod bearing assembly, the fourth guide rod bearing assembly, the fifth guide rod bearing assembly, and the sixth guide rod bearing assembly are all commonly used components in mechanical design. Their main components and operating principles are common knowledge and will not be explained in detail here. The battery pack lifting cylinder, the clamping cylinder, the side sealing cylinder, and the top sealing cylinder are all functional descriptions of the cylinder. The upper tab head and the lower tab head are both functional descriptions of the head. The battery pack positioning fixture and the tab positioning fixture are both functional descriptions of the positioning fixture. The fixture mounting plate and the pressure plate mounting plate are both functional descriptions of the mounting plate. The loading and unloading servo motor and the top sealing glue removal trough are functional descriptions of the servo motor and the glue removal trough, respectively.

[0042] Compared with the existing technology, the beneficial effects of the present invention are:

[0043] 1. It designs the structure of the battery pack loading and unloading mechanism. When the battery pack is placed on the battery pack positioning fixture, the pressing assembly presses the battery pack under the tension of the tension spring. The loading and unloading servo motor drives the battery pack loading and unloading mechanism to move to the side sealing station and the top sealing station respectively through the screw bearing assembly to position the side seal and top seal of the battery pack. In the process of conveying the battery pack, the battery pack lifting cylinder drives the positioning platform to rise to lift the battery pack. The raised battery pack can cross the lower side sealing assembly for automatic loading and unloading. It does not require manual operation, which avoids the phenomenon of manual arm burns when loading the battery pack, ensuring that the battery pack loading and unloading is more efficient and safer.

[0044] 2. The structures of the first opening and clamping mechanism and the second opening and clamping mechanism are designed respectively. When the opening cylinder of each opening and clamping mechanism drives the gasket to move downward along the guide column through the first connecting member, the pressing handle can be pressed, so that the pressing part of the battery pack loading and unloading mechanism releases the pressure on the battery pack to facilitate placing the battery pack on the battery pack loading and unloading mechanism or removing the sealed battery pack; conversely, when the opening cylinder of each opening and clamping mechanism drives the gasket to move upward along the guide column through the first connecting member, the pressing handle can be released, so that the pressing part of the battery pack loading and unloading mechanism is reset to press the battery pack placed thereon, so as to facilitate the side sealing mechanism and the first top sealing mechanism and the second top sealing mechanism to perform side sealing and top sealing on the battery pack respectively.

[0045] 3. The structure of the side sealing mechanism is designed so that the side sealing cylinder drives the upper side sealing assembly downward to close with the lower side sealing assembly, so that the first sealing head of the upper side sealing assembly can approach the second sealing head of the lower side sealing assembly. The approaching first and second sealing heads can press and seal the aluminum-plastic film on the side of the battery pack entering its working position, and the glue overflowing during the sealing process is discharged through the side sealing glue discharge groove. It has the advantages of high sealing efficiency, good sealing effect and high sealing precision for the aluminum-plastic film on the side of the battery pack.

[0046] 4. The structures of the first top sealing mechanism and the second top sealing mechanism are designed respectively. The first guide bar and the second guide bar of each top sealing mechanism guide and limit the second cylinder mounting plate. An upper positioning component is provided between the first guide bar and the second guide bar. The upper positioning component is used to position and adjust the position of the upper top sealing component on the sealing layer plate, and the lower positioning component is used to position and adjust the position of the lower top sealing component on the sealing plate. Since the second connecting member is connected to the second cylinder mounting plate, when the positioning bolt is twisted to pull or push the second connecting member, the second connecting member is moved. The second cylinder mounting plate is driven to move to achieve positioning and adjustment of the upper top seal assembly on the sealing layer plate. The upper positioning assembly can not only fine-tune the relative position between the upper and lower top seal assemblies to make the relative alignment of the upper and lower top seal assemblies more precise and the positioning adjustment more efficient, but also fine-tune the spacing between the second top seal mechanism and the first top seal mechanism to adapt to the sealing of the aluminum-plastic film on the top and bottom sides of battery packs of different specifications. It has the advantages of strong versatility, high top sealing efficiency and good top sealing effect. In addition, it combines the sealing of the battery pack and the heating of the battery pack's tabs in the same process to avoid the current method of heating the battery pack to a specified temperature before high-temperature sealing, which produces toxic gases that can be directly inhaled by the human body and easily cause harm to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0048] Figure 1 This is a three-dimensional diagram of the automatic loading and unloading edge banding machine for battery packs of the present invention.

[0049] Figure 2 This is a three-dimensional diagram of the battery pack loading and unloading mechanism of the battery pack automatic loading and unloading edge banding machine of the present invention.

[0050] Figure 3 This is a three-dimensional assembly diagram of the first clamping mechanism, the second clamping mechanism, and the side sealing mechanism of the automatic loading and unloading edge sealing machine for battery packs of the present invention.

[0051] Figure 4 It is a three-dimensional diagram of the first top sealing mechanism or the second top sealing mechanism of the automatic loading and unloading edge sealing machine for battery packs of the present invention.

[0052] Figure 5 These are three-dimensional views of the first top sealing mechanism or the second top sealing mechanism of the automatic loading and unloading edge sealing machine for battery packs of the present invention from different directions.

[0053] Figure 6 This is the battery pack automatic loading and unloading edge banding machine of the utility model Figure 4 An enlarged stereoscopic view of part A.

[0054] Figure 7 It is a three-dimensional diagram of the upper positioning assembly or the lower positioning assembly of the automatic loading and unloading edge banding machine for battery packs of the present invention. DETAILED DESCRIPTION

[0055] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0057] In this embodiment, refer to Figures 1 to 7 As shown, the automatic loading and unloading edge sealing machine for battery packs of the present invention includes a sealing table 1, a sealing layer 2 is provided on one end of the sealing table 1, the sealing table 1 is connected and installed with the sealing layer 2 through a guide column 3, and two parallel linear sliding modules 4 are provided on the sealing table 1, one of which is provided with a screw bearing assembly 5 on the outer side of the linear sliding module 4, and the screw bearing assembly 5 is connected to a loading and unloading servo motor 6, and a battery pack loading and unloading mechanism 7 is commonly connected to the two linear sliding modules 4, and the battery pack loading and unloading mechanism 7 is connected and installed with the screw bearing assembly 5, and the loading and unloading servo motor 6 drives the battery pack loading and unloading mechanism 7 to slide back and forth on the two linear sliding modules 4 through the screw bearing assembly 5 to load and unload the battery pack.

[0058] A side sealing mechanism 8 is provided on one end of the sealing layer 2 close to the battery pack loading and unloading mechanism 7 , and the side sealing mechanism 8 seals the aluminum-plastic film on the side of the battery pack.

[0059] A first clamping mechanism 91 and a second clamping mechanism 92 are respectively provided on both sides of the side sealing mechanism 8. The first clamping mechanism 91 and the second clamping mechanism 92 synchronously drive the battery pack loading and unloading mechanism 7 to open the clamps.

[0060] A first top sealing mechanism 10 and a second top sealing mechanism 11 are respectively provided on the two end portions adjacent to the end portion of the sealing layer 2 where the side sealing mechanism 8 is provided. The first top sealing mechanism 10 and the second top sealing mechanism 11 are arranged opposite to each other. By adjusting the distance between the first top sealing mechanism 10 and the second top sealing mechanism 11, the aluminum-plastic film on both sides of the top and bottom of battery packs of different sizes can be sealed.

[0061] In one embodiment, the battery pack loading and unloading mechanism 7 includes a lifting portion 71 provided on the linear sliding module 4 for lifting the battery pack, a positioning portion 72 for positioning and fixing the battery pack is provided on the lifting portion 71, and a pressing portion 73 for pressing and fixing the battery pack is provided on the positioning portion 72.

[0062] The lifting part 71 includes a movable plate 711 arranged on the linear sliding module 4, and a battery pack lifting cylinder 712 is provided on the movable plate 711. A first guide rod bearing assembly 713 and a second guide rod bearing assembly 714 are respectively provided on both sides of the battery pack lifting cylinder 712. The first guide rod bearing assembly 713 and the second guide rod bearing assembly 714 are respectively installed on the movable plate 711.

[0063] The positioning portion 72 includes a positioning platform 721, the upper ends of the first guide rod bearing assembly 713 and the second guide rod bearing assembly 714 and the output end of the battery pack lifting cylinder 712 are commonly connected to the positioning platform 721, a hollow portion is provided in the center of the positioning platform 721, and a lap plate 722 is extended toward the hollow portion from the positioning platform 721, a battery pack positioning fixture 723 is provided on the lap plate 722, the battery pack positioning fixture 723 is located in the hollow portion, and the two ends adjacent to the end portion of the positioning platform 721 where the lap plate 722 is provided are respectively provided with tab positioning fixtures 724, the tab positioning fixtures 724 are fixed to the positioning platform 721 by a fixture mounting plate 725, and the two tab positioning fixtures 724 respectively position the tabs at both ends of the battery pack.

[0064] The pressing part 73 includes a pressing bearing 731 arranged on one end of the positioning platform 721 facing the sealing layer 2. There are more than two pressing bearings 731. A pressing shaft 732 is provided that movably penetrates the pressing bearing 731. Pressing handles 733 are provided on both ends of the pressing shaft 732. There is more than one pressing assembly 734 above the battery pack positioning fixture 723. The pressing assembly 734 is connected and installed with the pressing shaft 732. The pressing assembly 734 rotates around the pressing shaft 732 to enable the pressing assembly 734 to press or loosen the battery pack on the battery pack positioning fixture 723.

[0065] In one embodiment, the pressing assembly 734 includes a pressing plate mounting plate 7341, a pressing plate 7342 is mounted on one end of the pressing plate mounting plate 7341, the other end of the pressing plate mounting plate 7341 is connected and mounted to the pressing shaft 732, a tension spring 7343 is connected between the pressing plate mounting plate 7341 and the positioning platform 721, and the tension spring 7343 provides tension to the pressing plate 7342 to press the battery pack on the battery pack positioning fixture 723.

[0066] In one embodiment, the first opening and clamping mechanism 91 includes an opening and clamping cylinder 911 installed on the sealing layer 2, and a first connecting member 912 is provided on the output end of the opening and clamping cylinder 911. One end of the first connecting member 912 is connected and installed with the output end of the opening and clamping cylinder 911, and a linear bearing 913 is installed on the other end of the first connecting member 912. The linear bearing 913 is sleeved on the guide column 3, and a gasket 914 is provided under the first connecting member 912. The gasket 914 is used in conjunction with the pressing handle 733.

[0067] The structure of the second clamping mechanism 92 is arranged in a mirror-symmetrical manner to the structure of the first clamping mechanism 91 , and the working principle of the second clamping mechanism 92 is the same as that of the first clamping mechanism 91 .

[0068] In one embodiment, the side sealing mechanism 8 includes a side sealing cylinder 81 disposed on the sealing plate 2. A third guide rod bearing assembly 82 and a fourth guide rod bearing assembly 83 are respectively provided on either side of the side sealing cylinder 81. A first cylinder mounting plate 84 is provided between the side sealing cylinder 81 and the sealing plate 2. The third and fourth guide rod bearing assemblies 82, 83, and the side sealing cylinder 81 are fixed to the sealing plate 2 via the first cylinder mounting plate 84. The lower ends of the third and fourth guide rod bearing assemblies 82, 83, and the output end of the side sealing cylinder 81 are connected to an upper side sealing assembly 85. A lower side sealing assembly 86 is provided on the sealing plate 1. The upper side sealing assembly 85 is arranged opposite the lower side sealing assembly 86. The side sealing cylinder 81 drives the upper side sealing assembly 85 downward to seal the aluminum-plastic film on the side of the battery pack. A plurality of side sealing cylinders 81 are provided.

[0069] The upper side sealing assembly 85 includes a first fixed seat 851, a first heating seat 852, a first heating tube 853 and a first head 854. The first fixed seat 851, the first heating seat 852 and the first head 854 are connected and installed in sequence from top to bottom. The first heating tube 853 runs horizontally through the first heating seat 852. The upper part of the first fixed seat 851 is connected and installed to the output end of the side sealing cylinder 81.

[0070] The lower side sealing assembly 86 includes a second fixed seat 861, a second heating seat 862, a second heating tube 863 and a second head 864. The second head 864, the second heating seat 862 and the second fixed seat 861 are connected and installed in sequence from top to bottom. The second heating tube 863 runs horizontally through the second heating seat 862. The second fixed seat 861 is installed on the sealing plate 1. Side sealing glue removal grooves 865 are respectively provided at both ends of the second head 864.

[0071] In one embodiment, the first top sealing mechanism 10 includes a top sealing cylinder 101 provided on the sealing layer 2, a fifth guide rod bearing assembly 102 and a sixth guide rod bearing assembly 103 are respectively provided on both sides of the top sealing cylinder 101, a second cylinder mounting plate 104 is provided between the top sealing cylinder 101 and the sealing layer 2, the fifth guide rod bearing assembly 102, the sixth guide rod bearing assembly 103 and the top sealing cylinder 101 are fixed on the sealing layer 2 through the second cylinder mounting plate 104, the lower ends of the fifth guide rod bearing assembly 102 and the sixth guide rod bearing assembly 103 and the output end of the top sealing cylinder 101 are commonly connected to the upper top sealing assembly 105, and the sides of the second cylinder mounting plate 104 at both ends are connected. A first guide bar 106 and a second guide bar 107 are installed in parallel on each side. The first guide bar 106 and the second guide bar 107 guide and limit the second cylinder mounting plate 104. An upper positioning assembly 108 is provided between the first guide bar 106 and the second guide bar 107. The upper positioning assembly 108 is connected and installed to the second cylinder mounting plate 104. The upper positioning assembly 108 positions and adjusts the position of the upper top seal assembly 105 on the sealing layer 2. The second cylinder mounting plate 104 is provided with a positioning groove 109. A fixing bolt 100 is installed in the positioning groove 109. The fixing bolt 100 and the positioning groove 109 are used to adjust the fixed position of the upper top seal assembly 105 on the sealing layer 2. There are multiple positioning grooves 109.

[0072] The sealing platen 1 is provided with a lower top sealing assembly 12 which is arranged opposite to the upper top sealing assembly 105. A third guide bar 13 and a fourth guide bar 14 which are arranged in parallel are respectively installed on both sides of the lower top sealing assembly 12. A lower positioning assembly 15 is provided between the third guide bar 13 and the fourth guide bar 14. The lower positioning assembly 15 is connected to the lower top sealing assembly 12, and the position of the lower top sealing assembly 12 on the sealing platen 1 is positioned and adjusted by the lower positioning assembly 15.

[0073] In one embodiment, the upper sealing assembly 105 includes a third fixed seat 1051, a third heating seat 1052 and a third head 1053 connected in sequence from top to bottom, the lower ends of the fifth guide rod bearing assembly 102 and the sixth guide rod bearing assembly 103 and the output end of the sealing cylinder 101 are commonly connected to the third fixed seat 1051, a third heating tube 1054 is provided horizontally through the third heating seat 1052, and a pole ear upper head 1055 is provided on one side of the third head 1053.

[0074] The two ends of the tab upper seal 1055 are respectively connected with guide pins 1056 . The two guide pins 1056 are movable and vertically penetrate the tab upper seal 1055 . The two guide pins 1056 are both sleeved with springs 1057 .

[0075] In one embodiment, the upper positioning assembly 108 includes a nut seat 1081 and a second connecting member 1082 that are relatively arranged. A positioning bolt 1083 is threadedly connected to the nut seat 1081. An annular groove 1084 is provided on the end of the screw of the positioning bolt 1083. A connecting slot hole 1085 is vertically penetrated through the second connecting member 1082. A connecting groove 1086 is provided in the connecting slot hole 1085 that passes outward toward the nut seat 1081. The connecting groove 1086 of the second connecting member 1082 is adapted to be installed with the annular groove 1084 of the positioning bolt 1083.

[0076] The structure and working principle of the lower positioning assembly 15 are the same as those of the upper positioning assembly 108 .

[0077] In one embodiment, the lower top seal assembly 12 includes a fourth head 121, a fourth heating seat 122 and a fourth fixed seat 123 that are connected and installed in sequence from top to bottom. A fourth heating tube 124 is provided transversely through the fourth heating seat 122. Top seal glue removal grooves 125 are respectively provided at both ends of the fourth head 121. A lower tab head 126 is provided on one side of the fourth head 121. The lower tab head 126 is arranged opposite to the upper tab head 1055.

[0078] In one embodiment, the structure and working principle of the second top sealing mechanism 11 are the same as those of the first top sealing mechanism 10 .

[0079] In another embodiment, the working process of the automatic loading and unloading edge sealing machine for battery packs is as follows: the first clamping mechanism 91 and the second clamping mechanism 92 press downward the pressing part 73 of the battery pack loading and unloading mechanism 7 to drive the pressing part 73 to open. When the battery pack is placed on the battery pack loading and unloading mechanism 7, the first clamping mechanism 91 and the second clamping mechanism 92 release the pressure on the pressing part 73, so that the pressing part 73 of the battery pack loading and unloading mechanism 7 is reset to press and fix the battery pack. At the same time, the battery pack loading and unloading mechanism 7 limits and fixes the two pole ears of the battery pack; when the battery pack loading and unloading mechanism 7 is raised and transported through the side sealing mechanism 8 under the drive of the loading and unloading servo motor 6, the side sealing mechanism 8 seals the aluminum-plastic film on the side of the battery pack; after the side sealing mechanism 8 has completed sealing the aluminum-plastic film on the side of the battery pack, the loading and unloading servo motor 6 drives the battery pack loading and unloading mechanism 7 to move through the screw bearing assembly 5 to continue transporting the battery pack to the working positions of the first top sealing mechanism 10 and the second top sealing mechanism 11. The opening mechanism 10 and the second top sealing mechanism 11 seal the aluminum-plastic films at the two tops of the battery pack respectively, and heat the tabs at the same time in the process of sealing the aluminum-plastic films at the two ends of the battery pack, thereby avoiding the first top sealing mechanism 10 and the second top sealing mechanism 11 using independent processes to heat the aluminum-plastic films on both sides of the tabs, which cannot reach the temperature for hot-melt sealing of the aluminum-plastic films due to heat dissipation and cooling of the tabs, resulting in the phenomenon that the hot-melt seals of the aluminum-plastic films on both sides of the tabs are not firm; when the first top sealing mechanism 10 and the second top sealing mechanism 11 complete the sealing of the aluminum-plastic films at the two ends of the battery pack, the battery pack loading and unloading mechanism 7 is reset and retreated under the drive of the loading and unloading servo motor 6, and respectively exits the first top sealing mechanism 10 and the second top sealing mechanism 11 and the side sealing mechanism 8, and the first clamping mechanism 91 and the second clamping mechanism 92 drive the pressing part 73 of the battery pack loading and unloading mechanism 7 to open to loosen the pressure on the battery pack, thereby facilitating the removal of the sealed battery pack and the placement of the next battery pack to be processed, and so on.

[0080] The overall structural design can automatically load and convey the battery pack, automatically press and position the battery pack, automatically limit and fix the two tabs of the battery pack, automatically seal the aluminum-plastic film on the side of the battery pack, automatically seal the aluminum-plastic film on the two tops of the battery pack, and automatically convey and unload the sealed battery pack. The sealing process of the battery pack is fully automated, and no manual participation is required in the sealing process. In the process of conveying the battery pack, the positioning platform 721 is driven to rise by the battery pack lifting cylinder 712 to lift the battery pack and cross the lower side sealing component 8 6. It avoids the problems of workers getting their arms burned, work-related injuries or unsafe operations. It has the advantages of high loading and unloading efficiency, high sealing efficiency, good sealing effect and high degree of automated operation. In addition, it combines the sealing of the battery pack and the heating of the battery pack's tabs in the same process to avoid operators inhaling toxic gases. It can effectively solve the problem on the market that before the top side of the lithium battery is sealed, the head needs to be heated to a specified temperature first, which makes it easy to generate toxic gases when the head seals the top side of the lithium battery, which is easy to be directly inhaled by the operator to cause harm to the body.

[0081] The above embodiment is only an example of the present invention and is not intended to limit the implementation and scope of rights of the present invention. Any technical solution that is identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. Automatic loading and unloading edge banding machine for battery packs, including a sealing platen, a sealing layer plate is provided on one end of the sealing platen, and the sealing platen is connected and installed with the sealing layer plate through a guide column, characterized in that: The sealing platen is provided with two parallel linear sliding modules, one of which is provided with a screw bearing assembly on the outside, which is connected to a loading and unloading servo motor. The two linear sliding modules are connected to a battery pack loading and unloading mechanism, which is connected and installed with the screw bearing assembly. The loading and unloading servo motor drives the battery pack loading and unloading mechanism to slide back and forth on the two linear sliding modules through the screw bearing assembly to load and unload the battery pack. A side sealing mechanism is provided on one end of the sealing plate close to the battery pack loading and unloading mechanism, which seals the aluminum-plastic film on the side of the battery pack; A first clamping mechanism and a second clamping mechanism are respectively provided on both sides of the side sealing mechanism, and the first clamping mechanism and the second clamping mechanism synchronously drive the battery pack loading and unloading mechanism to open the clamp; A first top sealing mechanism and a second top sealing mechanism are respectively provided on the two end portions adjacent to the end portion of the sealing layer plate provided with a side sealing mechanism. The first top sealing mechanism and the second top sealing mechanism are arranged opposite to each other. By adjusting the distance between the first top sealing mechanism and the second top sealing mechanism, the aluminum-plastic film on both sides of the top and bottom of battery packs of different sizes can be sealed.

2. The battery pack automatic loading and unloading edge sealing machine according to claim 1, characterized in that: The battery pack loading and unloading mechanism includes a lifting part provided on a linear sliding module for lifting the battery pack, a positioning part provided on the lifting part for positioning and fixing the battery pack, and a pressing part provided on the positioning part for pressing and fixing the battery pack; The lifting part includes a movable plate provided on a linear sliding module, a battery pack lifting cylinder is provided on the movable plate, a first guide rod bearing assembly and a second guide rod bearing assembly are provided on both sides of the battery pack lifting cylinder, and the first guide rod bearing assembly and the second guide rod bearing assembly are respectively mounted on the movable plate; The positioning portion includes a positioning platform, the upper ends of the first guide rod bearing assembly and the second guide rod bearing assembly and the output end of the battery pack lifting cylinder are commonly connected to the positioning platform, a hollow portion is provided in the center of the positioning platform, a lap plate is extended from the positioning platform to the hollow portion, a battery pack positioning fixture is provided on the lap plate, the battery pack positioning fixture is located in the hollow portion, and the two ends adjacent to the end portion of the positioning platform with the lap plate are respectively provided with tab positioning fixtures, the tab positioning fixtures are fixed to the positioning platform through the fixture mounting plate, and the two tab positioning fixtures respectively position the tabs at both ends of the battery pack; The pressing part includes a pressing bearing arranged on one end of the positioning table facing the sealing layer plate, and there are more than two pressing bearings. A pressing shaft is provided that movably passes through the pressing bearing, and pressing handles are provided on both ends of the pressing shaft. There is more than one pressing assembly above the battery pack positioning jig, and the pressing assembly is connected and installed with the pressing shaft. The pressing assembly rotates with the pressing shaft as the center to realize the pressing assembly to tighten or loosen the battery pack on the battery pack positioning jig.

3. The automatic loading and unloading edge sealing machine for battery packs according to claim 2, characterized in that: The first opening mechanism includes an opening cylinder mounted on the sealing plate, a first connecting member is provided on the output end of the opening cylinder, one end of the first connecting member is connected to the output end of the opening cylinder, a linear bearing is installed on the other end of the first connecting member, the linear bearing is sleeved on the guide column, a gasket is provided under the first connecting member, and the gasket is used in conjunction with the pressure handle; The structure of the second clamping mechanism is arranged in a mirror-symmetrical manner to the structure of the first clamping mechanism, and the working principle of the second clamping mechanism is the same as that of the first clamping mechanism.

4. The automatic loading and unloading edge sealing machine for battery packs according to claim 1, characterized in that: The side sealing mechanism includes a side sealing cylinder provided on the sealing layer plate, a third guide rod bearing assembly and a fourth guide rod bearing assembly are respectively provided on both sides of the side sealing cylinder, a first cylinder mounting plate is provided between the side sealing cylinder and the sealing layer plate, the third guide rod bearing assembly, the fourth guide rod bearing assembly and the side sealing cylinder are fixed to the sealing layer plate through the first cylinder mounting plate, the lower ends of the third guide rod bearing assembly and the fourth guide rod bearing assembly and the output end of the side sealing cylinder are commonly connected to an upper side sealing assembly, a lower side sealing assembly is provided on the sealing plate, the upper side sealing assembly and the lower side sealing assembly are arranged opposite to each other, and the side sealing cylinder drives the upper side sealing assembly to move downward to seal the aluminum-plastic film on the side of the battery pack; The side sealing cylinders are provided with a plurality of them; The upper side sealing assembly includes a first fixing seat, a first heating seat, a first heating pipe and a first sealing head. The first fixing seat, the first heating seat and the first sealing head are connected and installed in sequence from top to bottom. The first heating pipe runs horizontally through the first heating seat. The upper part of the first fixing seat is connected and installed with the output end of the side sealing cylinder. The lower side sealing assembly includes a second fixed seat, a second heating seat, a second heating tube and a second head. The second head, the second heating seat and the second fixed seat are connected and installed in sequence from top to bottom. The second heating tube runs horizontally through the second heating seat. The second fixed seat is installed on the sealing plate. Side sealing glue discharge grooves are respectively provided at both ends of the second head.

5. The battery pack automatic loading and unloading edge sealing machine according to claim 1, characterized in that: The cam is secured to the cam face and is secured to the bottom of the cam face by a spring, which allows the cam to be moved in an orderly manner along the length of the cam face, while the cam face is kept in a state of engagement with the cam face. There are several positioning grooves; A lower top sealing assembly is installed on the sealing platen and is arranged opposite to the upper top sealing assembly. A third guide bar and a fourth guide bar are installed in parallel on both sides of the lower top sealing assembly. A lower positioning assembly is provided between the third guide bar and the fourth guide bar, and the lower positioning assembly is connected to the lower top sealing assembly.

6. The automatic loading and unloading edge sealing machine for battery packs according to claim 5, characterized in that: The upper top seal assembly includes a third fixed seat, a third heating seat and a third head connected in sequence from top to bottom, the lower ends of the fifth guide rod bearing assembly and the sixth guide rod bearing assembly and the output end of the top seal cylinder are commonly connected to the third fixed seat, a third heating pipe is provided transversely through the third heating seat, and a tab upper head is provided on one side of the third head; The two ends of the tab upper seal are respectively connected with guide pins, the two guide pins are movable and vertically penetrate the tab upper seal, and the two guide pins are both sleeved with springs.

7. The automatic loading and unloading edge sealing machine for battery packs according to claim 5, characterized in that: The upper positioning assembly includes a nut seat and a second connecting piece arranged opposite to each other, a positioning bolt is threadedly connected to the nut seat, an annular groove is provided on the end of the screw rod of the positioning bolt, a connecting slot hole is vertically passed through the second connecting piece, and a connecting groove is provided through the connecting slot hole toward the nut seat. The connecting groove of the second connecting piece is adapted to be installed with the annular groove of the positioning bolt; The structure and working principle of the lower positioning assembly are the same as those of the upper positioning assembly.

8. The automatic loading and unloading edge sealing machine for battery packs according to claim 5, characterized in that: The lower top seal assembly includes a fourth head, a fourth heating seat and a fourth fixed seat connected and installed in sequence from top to bottom. A fourth heating tube is arranged horizontally through the fourth heating seat. Top seal glue removal grooves are respectively provided at both ends of the fourth head. A lower head for the pole lug is provided on one side of the fourth head. The lower head for the pole lug is arranged opposite to the upper head for the pole lug.

9. The automatic loading and unloading edge sealing machine for battery packs according to claim 1, characterized in that: The structure and working principle of the second top sealing mechanism are the same as those of the first top sealing mechanism.

10. The automatic loading and unloading edge sealing machine for battery packs according to claim 2, characterized in that: The pressing assembly includes a pressing plate mounting plate, a pressing plate is mounted on one end of the pressing plate mounting plate, and the other end of the pressing plate mounting plate is connected and mounted to the pressing shaft. A tension spring is connected between the pressing plate mounting plate and the positioning platform, and the tension spring provides tension to the pressing plate to press the battery pack on the battery pack positioning jig.

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