Battery pack flattening, inflating and deflating equipment

Abstract

The utility model discloses battery pack flattening inflation and deflation equipment, which relates to the technical field of battery recovery and comprises a flattening mechanism, a ventilation mechanism, a support frame, a linear driving component, a pressed plate, a pressing plate, a ventilation connector and an oxygen bottle. A battery pack to be processed is placed on the inner side of the supporting frame of the flattening mechanism, the battery pack is located between the pressing plate and the pressed plate, the linear driving assembly is adjusted to extend, the linear driving assembly pushes the pressing plate to be close to the pressed plate, and the pressing plate and the pressed plate are matched to extrude the battery pack. The two sides of the battery pack are subjected to flattening treatment through the pressing plate and the pressed plate, so that a bulge of the battery pack is subjected to exhaust treatment through an exhaust hole; according to the utility model, a double-side flattening treatment mode is adopted, and the two sides of the battery pack are extruded, so that the acting force on the surface of the battery is better; and the surface flatness of the battery after exhausting is better, so that the battery repairing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery recycling technology, specifically to a battery pack flattening and venting device. Background Technology

[0002] When a battery bulges, it's usually due to excessive internal pressure, primarily caused by overcharging, overcurrent charging, battery quality issues, and severe impacts. Overcharging and overcurrent charging increase internal pressure, leading to bulging. Battery quality problems, such as using inferior cells, can also cause bulging. Furthermore, severe impacts can cause internal short circuits, generating excessive heat, which can lead to bulging or even an explosion. Methods for dealing with a bulging battery include releasing the gas and replacing the battery. For mobile phone batteries, while releasing the gas may allow temporary use, this poses a safety hazard; therefore, it's recommended to replace with an original battery or a safety-certified battery. For electric vehicle batteries, minor bulging may allow continued use, but severely bulged or aged batteries should be replaced.

[0003] Patent (CN219123442U) discloses a venting and electrolyte replenishment device for lithium batteries, comprising a venting pipe, an injection pipe, a connecting pipe, and a selector valve. A first one-way valve is fixedly installed in the venting pipe. The injection pipe is used for electrolyte injection. The connecting pipe is used to connect to a pouch lithium battery. The outlet of the selector valve is connected to the connecting pipe, and the inlet of the selector valve can selectively connect to either the venting pipe or the injection pipe. This invention reduces the complexity of venting and replenishing pouch lithium batteries, simplifies operation, and thus ensures manufacturing efficiency.

[0004] The lithium battery venting and liquid replenishment device in the aforementioned patent can vent the battery pack, but the bulging battery pack is not in a flat state. It may be bulging on one side and flat on the other, or bulging on one side and bent on the other, or bulging on both sides. It mainly relies on the vacuuming operation of the venting pipe, which has poor force on the battery surface, resulting in poor surface flatness after venting, and thus poor battery repair effect. Utility Model Content

[0005] The purpose of this invention is to provide a battery pack flattening and venting device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a battery pack flattening and degassing device, including a flattening mechanism and a gas exchange mechanism. The gas exchange mechanism is located on top of the flattening mechanism. The flattening mechanism includes a support frame and a linear drive assembly. The inner side of the support frame is provided with a pressure plate and a movably connected pressure plate. The output end of the linear drive assembly is fixedly connected to the outer wall of the pressure plate. The pressure plate is located between the linear drive assembly and the pressure plate. The gas exchange mechanism includes a gas exchange connector, an oxygen cylinder, and a displacement adjustment mechanism for the gas exchange connector. The oxygen cylinder is connected to the gas exchange connector through a gas path assembly.

[0007] Furthermore, the support frame has a battery inlet between the pressure plate and the pressure plate, and the support frame has an upper and lower adjustment plate on the outside of the battery inlet. The top of the upper and lower adjustment plate has several support plates horizontally arranged on the inside of the battery inlet.

[0008] Furthermore, the support frame is provided with a material ejection mechanism inside the battery inlet. The material ejection mechanism includes a material ejection connecting plate, a push rod, a push block, an optical axis, and a guide plate. The push rod, optical axis, and support plate are parallel to each other. The outer wall of the guide plate is provided with a box-type slider that matches the optical axis. The push rod is located between the material ejection connecting plate and the push block. One end of the optical axis is fixedly connected to the material ejection connecting plate.

[0009] Furthermore, the linear drive assembly comprises a split-type adjustable booster cylinder and a booster, wherein the split-type adjustable booster cylinder is fixedly connected to the support frame, and the piston rod of the split-type adjustable booster cylinder is fixedly connected to the center of the outer wall of the pressure plate.

[0010] Furthermore, the displacement adjustment mechanism includes a first slide, a second slide, and a third slide, which are perpendicular to each other. The output end of the first slide is fixedly connected to the second slide, the output end of the second slide is fixedly connected to the third slide, and the output end of the third slide is fixedly connected to the ventilation connector.

[0011] Furthermore, the outer wall of the ventilation connector is fitted with a pressing head and a sealing gasket, the sealing gasket being located at the bottom of the outer wall of the ventilation connector, and the pressing head being located at the top of the sealing gasket.

[0012] Furthermore, it also includes a welding machine, wherein the flattening mechanism is located on the top of the worktable of the welding machine, and the top of the welding machine is provided with a welding head capable of three-dimensional motion.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0014] This invention comprises a flattening mechanism, a ventilation mechanism, a support frame, a linear drive assembly, a pressure plate, a pressure plate, a ventilation connector, and an oxygen cylinder. In use, the battery pack to be processed is placed inside the support frame of the flattening mechanism, positioned between the pressure plate and the pressure plate. The linear drive assembly is extended, pushing the pressure plate closer to the pressure plate. The pressure plate and the pressure plate work together to compress the battery pack, flattening both sides of the pack. This allows the bulge in the battery pack to be vented through the vent holes (if the battery pack itself does not have vent holes, a metal wire can be used to pierce the battery cover and quickly pull it out to release the internal gas; after the filling and discharging process, the piercing hole is welded). This invention employs a double-sided flattening method, simultaneously applying pressure to both sides of the battery pack, resulting in better force on the battery surface. After venting, the surface flatness of the battery is improved, thus enhancing the battery repair effect.

[0015] In this invention, the upper and lower adjusting plates support the support plate, which in turn supports the battery pack. By adjusting the height of the upper and lower adjusting plates, the height of the support plate can be adjusted, thereby achieving the desired height of the battery pack inside the support frame. This effectively accommodates battery packs of different sizes while ensuring more uniform pressure from the pressure plate on the battery pack and ensuring that the venting connector can connect with the battery pack's exhaust port. The unloading connecting plate pushes inward, and through the top block, it pushes the battery pack out from inside the support frame. The split-type adjustable booster cylinder presses against the pressure plate, providing pressure to ensure that the pressure plate flattens the battery pack. The extension length of the split-type adjustable booster cylinder can be adjusted according to the size of the battery pack. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the entire utility model from another angle;

[0019] Figure 3 This is a schematic diagram of the flattening mechanism and the ventilation mechanism of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the flattening mechanism and the ventilation mechanism of this utility model from another angle;

[0021] Figure 5 This is a schematic diagram of the ejection mechanism of this utility model;

[0022] In the diagram: 1. Flattening mechanism; 101. Support frame; 1011. Pressure plate; 1012. Pressure plate; 1013. Battery inlet; 1014. Upper and lower adjustment plate; 1015. Support plate; 1016. Unloading and ejection mechanism; 10161. Unloading connecting plate; 10162. Push rod; 10163. Push block; 10164. Optical axis; 10165. Guide plate; 10166. Box-type slider; 1 02. Linear drive assembly; 1021. Split-type adjustable booster cylinder; 1022. Booster; 2. Ventilation mechanism; 201. Ventilation connector; 2011. Pressing head; 2012. Sealing gasket; 202. Oxygen cylinder; 203. Displacement adjustment mechanism; 2031. First slide; 2032. Second slide; 2033. Third slide; 201. First gear; 3. Welding machine; 301. Welding head. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution: a battery pack flattening and degassing device, including a flattening mechanism 1 and a gas exchange mechanism 2. The gas exchange mechanism 2 is located on top of the flattening mechanism 1. The flattening mechanism 1 includes a support frame 101 and a linear drive assembly 102. The inner side of the support frame 101 is provided with a pressure plate 1011 and a movably connected pressure plate 1012. The output end of the linear drive assembly 102 is fixedly connected to the outer wall of the pressure plate 1012. The pressure plate 1012 is located between the linear drive assembly 102 and the pressure plate 1011. The gas exchange mechanism 2 includes a gas exchange connector 201, an oxygen cylinder 202, and a displacement adjustment mechanism 203 for the gas exchange connector 201. The oxygen cylinder 202 is connected to the gas exchange connector 201 through a gas path assembly.

[0025] In one embodiment, the support frame 101 has a battery inlet 1013 between the pressure plate 1011 and the pressure plate 1012. The battery inlet 1013 provides a window for placing the battery pack inside the support frame 101, making operation more convenient. The support frame 101 has an adjustable plate 1014 on the outside of the battery inlet 1013. The top of the adjustable plate 1014 has several horizontal support plates 1015 on the inside of the battery inlet 1013. The adjustable plate 1014 supports the support plates 1015, and the support plates 1015 support the battery pack. By adjusting the height of the adjustable plate 1014, the height of the support plates 1015 can be adjusted, thereby achieving the height of the battery pack inside the support frame 101. This can effectively accommodate battery packs of different sizes, while ensuring that the pressure plate 1012 exerts more uniform pressure on the battery pack, and ensuring that the ventilation connector can be connected to the exhaust port of the battery pack.

[0026] In one embodiment, the support frame 101 is provided with a material ejection mechanism 1016 inside the battery inlet 1013. The material ejection mechanism 1016 includes a material ejection connecting plate 10161, a push rod 10162, a push block 10163, an optical axis 10164, and a guide plate 10165. The push rod 10162, the optical axis 10164, and the support plate 1015 are parallel to each other. The outer wall of the guide plate 10165 is provided with a box-type slider 10166 that matches the optical axis 10164. The push rod 10162 is located between the material ejection connecting plate 10161 and the push block 10163. One end of the optical axis 10164 is connected to the material ejection connecting plate 1016. 1. Fixed connection: The box-type slider 10166 on the guide plate 10165 guides the optical axis 10164, which in turn guides the ejection connecting plate 10161. After the battery pack is placed into the support frame 101 through the battery inlet 1013, the battery pack pushes the top block 10163 outward. The top block 10163 pushes the ejection connecting plate 10161 outward through the top rod 10162. The optical axis 10164 supports the ejection connecting plate 10161. After the battery is repaired, the ejection connecting plate 10161 is pushed inward, and the ejection connecting plate 10161 pushes the battery pack out from the inside of the support frame 101 through the top block 10163.

[0027] In one embodiment, the linear drive assembly 102 comprises a split adjustable booster cylinder 1021 and a booster 1022. The split adjustable booster cylinder 1021 is fixedly connected to the support frame 101, and the piston rod of the split adjustable booster cylinder 1021 is fixedly connected to the center of the outer wall of the pressure plate 1012. The split adjustable booster cylinder 1021 applies pressure to the pressure plate 1012, ensuring that the pressure plate 1012 flattens the battery pack. The extension length of the split adjustable booster cylinder 1021 can be adjusted according to the size of the battery pack.

[0028] In one embodiment, the displacement adjustment mechanism 203 includes a first slide 2031, a second slide 2032, and a third slide 2033. The first slide 2031, the second slide 2032, and the third slide 2033 are perpendicular to each other. The output end of the first slide 2031 is fixedly connected to the second slide 2032, the output end of the second slide 2032 is fixedly connected to the third slide 2033, and the output end of the third slide 2033 is fixedly connected to the ventilation connector 201. The first slide 2031, the second slide 2032, and the third slide 2033 cooperate to realize the movement of the ventilation connector 201 in a three-dimensional direction, which facilitates the alignment and connection of the ventilation connector 201 with the exhaust port of the battery pack.

[0029] In one embodiment, the outer wall of the ventilation connector 201 is fitted with a clamping head 2011 and a sealing gasket 2012. The sealing gasket 2012 is located at the bottom of the outer wall of the ventilation connector 201, and the clamping head 2011 is located at the top of the sealing gasket 2012. The cooperation of the clamping head 2011 and the sealing gasket 2012 achieves the sealing performance when the ventilation connector 201 is aligned and connected with the exhaust port of the battery pack.

[0030] In one embodiment, a welding machine 3 is also included. The flattening mechanism 1 is located on the top of the worktable of the welding machine 3. The top of the welding machine 3 is provided with a welding head 301 with three-dimensional motion. The welding head 301 on the welding machine 3 can move in a three-dimensional direction, so that the welding head 301 welds and encapsulates the vent holes on the surface of the battery pack.

[0031] The working principle of this utility model:

[0032] Refer to the instruction manual appendix Figures 1-5 This utility model comprises a flattening mechanism 1, a ventilation mechanism 2, a support frame 101, a linear drive assembly 102, a pressure plate 1011, a pressure plate 1012, a ventilation connector 201, and an oxygen cylinder 202. In use, the battery pack to be processed is placed inside the support frame 101 of the flattening mechanism 1, with the battery pack positioned between the pressure plate 1012 and the pressure plate 1011. The linear drive assembly 102 is adjusted to extend, pushing the pressure plate 1012 closer to the pressure plate 1011. The pressure plate 1012 and the pressure plate 1011 cooperate to flatten the battery pack. The battery pack undergoes a compression process. The pressure plate 1012 and the pressure plate 1011 flatten both sides of the battery pack, allowing the bulge to be released through the vent holes (if the battery pack itself does not have vent holes, a metal wire can be used to pierce the battery cover and then quickly pulled out to release the internal gas; after the charging and discharging process is complete, the piercing hole is welded). This invention employs a double-sided flattening method, simultaneously applying pressure to both sides of the battery pack, resulting in better force on the battery surface. After venting, the battery surface becomes smoother, thus improving the battery repair effect.

[0033] The ventilation connector 201 in the ventilation mechanism 2 connects to the exhaust port or puncture hole on the battery surface, and the oxygen cylinder 202 provides the air source. After the pressure plate 1012 and the pressure plate 1011 squeeze and vent the battery pack to level it, the bulge on the battery surface has been basically eliminated. Then, the ventilation connector is used to perform the inflation and deflation cycle on the battery pack at least three times, which can effectively replace the gas inside the battery pack, thereby changing the air pressure difference between the internal environment of the battery pack and the external environment, and thus improving the treatment effect on the battery pack.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack flattening and air exchange apparatus, comprising a flattening mechanism (1) and an air exchange mechanism (2), characterized in that: The ventilation mechanism (2) is arranged on the top of the flattening mechanism (1), the flattening mechanism (1) comprises a support frame (101) and a linear drive assembly (102), the support frame (101) is internally provided with a pressure receiving plate (1011) and a movable connection pressure plate (1012), the linear drive assembly (102) is fixedly connected with the outer wall of the pressure plate (1012) at the output end, the pressure plate (1012) is arranged between the linear drive assembly (102) and the pressure receiving plate (1011), the ventilation mechanism (2) comprises a ventilation connector (201), an oxygen cylinder (202) and a displacement adjusting mechanism (203) of the ventilation connector (201), and the oxygen cylinder (202) is connected with the ventilation connector (201) through a gas path assembly.

2. The battery pack flattening and gassing apparatus of claim 1, wherein: The support frame (101) is provided with a battery placing opening (1013) between the pressure receiving plate (1011) and the pressure plate (1012), and is provided with an up-down adjusting plate (1014) outside the battery placing opening (1013), and a plurality of supporting plates (1015) are horizontally arranged on the top of the up-down adjusting plate (1014) inside the battery placing opening (1013).

3. The battery pack flattening and gassing apparatus of claim 2, wherein: The support frame (101) is provided with a material returning and ejecting mechanism (1016) inside the battery placing opening (1013), the material returning and ejecting mechanism (1016) comprises a material returning connecting plate (10161), a top rod (10162), a top block (10163), an optical axis (10164) and a guide plate (10165), the top rod (10162), the optical axis (10164) and the supporting plate (1015) are parallel to each other, the outer wall of the guide plate (10165) is provided with a box-shaped sliding block (10166) matched with the optical axis (10164), the top rod (10162) is arranged between the material returning connecting plate (10161) and the top block (10163), and one end of the optical axis (10164) is fixedly connected with the material returning connecting plate (10161).

4. The battery pack flattening and gassing apparatus of claim 1, wherein: The linear drive assembly (102) is a split type adjustable booster cylinder (1021) and a booster (1022), the split type adjustable booster cylinder (1021) is fixedly connected with the support frame (101), and the piston rod of the split type adjustable booster cylinder (1021) is fixedly connected with the outer wall center of the pressure plate (1012).

5. The battery pack flattening and gassing apparatus of claim 1, wherein: The displacement adjusting mechanism (203) comprises a first sliding table (2031), a second sliding table (2032) and a third sliding table (2033), the first sliding table (2031), the second sliding table (2032) and the third sliding table (2033) are perpendicular to each other, the output end of the first sliding table (2031) is fixedly connected with the second sliding table (2032), the output end of the second sliding table (2032) is fixedly connected with the third sliding table (2033), and the output end of the third sliding table (2033) is fixedly connected with the ventilation connector (201).

6. The battery pack flattening and gassing apparatus of claim 1, wherein: The outer wall of the ventilation joint (201) is sleeved with a pressing head (2011) and a sealing gasket (2012), the sealing gasket (2012) is arranged at the bottom of the outer wall of the ventilation joint (201), and the pressing head (2011) is arranged at the top of the sealing gasket (2012).

7. The battery pack flattening and gassing apparatus of claim 1, wherein: The welding machine (3) is further included, the flattening mechanism (1) is arranged on the top of the workbench of the welding machine (3), and the welding head (301) with three-dimensional movement is arranged on the top of the welding machine (3).

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