阅读说明：本技术 密封枪、封口设备和封口方法 (Sealing gun, sealing device and sealing method ) 是由 张小明 吴望雄 段洋 林良智 于 2020-12-03 设计创作，主要内容包括：本发明提供了一种密封枪、封口设备和封口方法,密封枪用于将密封塞封堵到电池的注液口内,密封枪包括：用于封堵注液口的密封部,密封部具有用于输送密封塞的输送通道和与输送通道连通的推动通道,输送通道的第一出孔用于与注液口连通；推动部,推动部的至少部分可运动地设置于推动通道内,以通过推动部推动输送通道内的密封塞运动以使密封塞封堵至注液口内；其中,密封部内还具有与注液口连通的真空通道,以通过真空通道在密封塞封堵注液口之前抽出电池内的气体。本发明的密封枪而解决了现有技术中的电池在封口的过程中内部气体无法排出的问题。(The invention provides a sealing gun, sealing equipment and a sealing method, wherein the sealing gun is used for plugging a sealing plug into a liquid filling port of a battery, and comprises the following components: the sealing part is used for plugging the liquid injection port, the sealing part is provided with a conveying channel for conveying a sealing plug and a pushing channel communicated with the conveying channel, and a first outlet hole of the conveying channel is used for being communicated with the liquid injection port; the pushing part is movably arranged in the pushing channel so as to push the sealing plug in the conveying channel to move through the pushing part to seal the sealing plug into the liquid filling port; and the sealing part is internally provided with a vacuum channel communicated with the liquid injection port so as to draw out gas in the battery before the liquid injection port is blocked by the sealing plug through the vacuum channel. The sealing gun solves the problem that the internal gas cannot be discharged in the sealing process of the battery in the prior art.)

1. A sealing gun for plugging a sealing plug (31) into a pouring port (41) of a battery (40), comprising:

a sealing part (11) for sealing off the pouring opening (41), the sealing part (11) having a delivery channel (111) for delivering the sealing plug (31) and a push channel (112) communicating with the delivery channel (111), a first outlet opening (1111) of the delivery channel (111) being for communicating with the pouring opening (41);

a pushing part (12), wherein at least part of the pushing part (12) is movably arranged in the pushing channel (112) to push the sealing plug (31) in the conveying channel (111) to move through the pushing part (12) so as to seal the sealing plug (31) into the liquid injection port (41);

wherein the sealing part (11) is also internally provided with a vacuum channel communicated with the liquid injection port (41) so as to draw out the gas in the battery (40) before the sealing plug (31) blocks the liquid injection port (41).

2. The sealing gun of claim 1, further comprising:

a first seal ring (1);

the sealing part (11) is provided with a mounting groove (114) for mounting the first sealing ring (1), at least part of the first sealing ring (1) protrudes out of the mounting groove (114), so that when the sealing gun blocks the liquid injection port (41), the first sealing ring (1) seals a gap between the sealing part (11) and the battery (40).

3. The sealing gun according to claim 1, wherein the sealing portion (11) includes a sealing member (115) for connecting to the liquid pouring port (41) and a connecting member (116) for connecting to the pushing portion (12), and a second sealing ring (2) is interposed between the sealing member (115) and the connecting member (116).

4. Sealing gun as claimed in claim 3, characterized in that said closing means (115) comprise:

a first outlet port (1111) provided opposite to the pouring outlet (41), the first outlet port (1111) communicating with both the feed passage (111) and the push passage (112);

a second outlet orifice (1131), the second outlet orifice (1131) being intended to be connected to the pouring opening (41);

a vacuum channel, which is disposed inside the sealing component (115), wherein one end of the vacuum channel is connected to the second outlet hole (1131), the other end of the vacuum channel is connected to an exhaust hole (1132), and the exhaust hole (1132) penetrates through one side of the sealing component (115);

the mounting groove (114) is used for mounting the first sealing ring (1), the mounting groove (114) is an annular groove, and the first outlet hole (1111) and the second outlet hole (1131) are both located on the inner side of the mounting groove (114).

5. Sealing gun as claimed in claim 3, characterized in that said connecting part (116) comprises two symmetrically arranged connecting portions (1161), each connecting portion (1161) being provided with a passage slot, the two connecting portions (1161) being mutually spliced so that they enclose said delivery channel (111), said pusher channel (112) and a housing cavity (1163) housing said pusher (12).

6. Sealing gun as claimed in claim 3, characterized in that said pusher (12) comprises:

the sliding sleeve (121), a sliding channel (1211) is arranged in the sliding sleeve (121), and the sliding sleeve (121) is fixedly arranged in the sealing part (11);

a push rod (122), the push rod (122) comprising a press-in portion (1221) slidably disposed within the push channel (112) and a slide portion (1222) slidably disposed within the slide channel (1211).

7. The sealing gun according to claim 6, characterized in that the sliding channel (1211) and the push channel (112) are both cylindrical channels, the sliding portion (1222) is of cylindrical configuration, and the outer diameter of the sliding portion (1222) is larger than the outer diameter of the push channel (112).

8. Sealing gun according to claim 6, characterized in that it comprises a third sealing ring (3), a fourth sealing ring (4), a thrust cylinder (13); the sealing part (11) comprises a sealing component (117), one side of the sealing component (117) is connected with the connecting component (116) through the third sealing ring (3), and the other side of the sealing component (117) is connected with the cylinder body of the pushing cylinder (13) through a fourth sealing ring (4); at least part of a piston rod (131) of the pushing cylinder (13) penetrates through the sealing component (117) and is connected with the sliding part (1222) so as to drive the sliding part (1222) to move in the sliding channel (1211).

9. A sealing apparatus, comprising:

a sealing gun (10), the sealing gun (10) being a sealing gun according to any one of claims 1 to 8;

a pushing device (20), wherein the pushing device (20) is connected with a conveying channel (111) of the sealing gun (10) to convey a sealing plug (31) into a first outlet hole (1111) which is arranged on the sealing gun (10) opposite to a liquid injection port (41) of a battery (40);

-a feeding device (30), said feeding device (30) being connected to said pushing device (20) to deliver said sealing plug (31) into said delivery channel (111) according to a preset orientation.

10. The sealing apparatus according to claim 9, characterized in that said pushing means (20) comprise:

a pushing seat (21), wherein one side of the pushing seat (21) is provided with a sealing plug channel (211) and an air inlet channel (212), and one end of the pushing seat (21) is provided with a conveying channel (213) extending to the inside of the pushing seat (21); the sealing plug passage (211) and the air inlet passage (212) are both communicated with the conveying passage (213), and the air inlet passage (212) and the sealing plug passage (211) are sequentially arranged along the extending direction of the conveying passage (213); the other side of the pushing seat (21) is provided with an air outlet channel (214) communicated with the air inlet channel (212);

a transfer rod (22), the transfer rod (22) having a receiving channel (221) for receiving the sealing plug (31), the transfer rod (22) being movably arranged in the transfer channel (213) such that the receiving channel (221) has a first preset position corresponding to the sealing plug channel (211) and a second preset position corresponding to the air inlet channel (212);

a drive device (23), the drive device (23) being connected with the transfer rod (22) to drive the transfer rod (22) to move between a first preset position and a second preset position.

11. A sealing method characterized by being applied to the sealing apparatus of any one of claims 9 to 10; the sealing method comprises the following steps:

step S1: -delivering the sealing plug (31) into the pushing device (20) in a predetermined orientation by means of the feeding device (30);

step S2: -pushing the sealing plug (31) into the first outlet hole (1111) of the sealing gun (10) by air pressure using the pushing means (20);

step S3: compressing the battery (40) by using the sealing gun (10) and isolating the liquid injection port (41) from the external space so as to extract the gas in the liquid injection port (41) of the battery (40) from the liquid injection port (41);

step S4: and pushing the sealing plug (31) into the liquid injection port (41) by using the sealing gun (10) to seal the liquid injection port (41).

Technical Field

The invention relates to the field of battery sealing, in particular to a sealing gun, sealing equipment and a sealing method.

Background

Conventionally, hard-shell batteries are generally sealed in a soft-hard double-layer packaging mode, namely, a liquid injection port is blocked by a glue nail (aiming at preventing welding slag, dust and moisture from entering the interior of the battery), and then a laser welding machine is used for final sealing. The method is an indispensable technical means in the existing industrial production.

In the practical application of the battery packaging technology, although the inside of the battery is isolated from the outside, the air and moisture inside the battery are not removed, so that the gas generated inside the battery cannot be discharged when an SEI film is formed in the charging and discharging process of the battery, the interface of a pole piece is locally blackened, the uniformity and the density of the SEI film are influenced, the electric capacity, the internal resistance, the cycle life and the volume shape (gas expansion deformation) of the battery are influenced, and the service life of the battery is further shortened.

Disclosure of Invention

The invention mainly aims to provide a sealing gun, sealing equipment and a sealing method, so as to solve the problem that internal gas cannot be discharged in the sealing process of a battery in the prior art.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a sealing gun for plugging a sealing plug into a liquid filling port of a battery, the sealing gun comprising: the sealing part is used for plugging the liquid injection port, the sealing part is provided with a conveying channel for conveying a sealing plug and a pushing channel communicated with the conveying channel, and a first outlet hole of the conveying channel is used for being communicated with the liquid injection port; the pushing part is movably arranged in the pushing channel so as to push the sealing plug in the conveying channel to move through the pushing part to seal the sealing plug into the liquid filling port; and the sealing part is internally provided with a vacuum channel communicated with the liquid injection port so as to draw out gas in the battery before the liquid injection port is blocked by the sealing plug through the vacuum channel.

Further, the sealing gun further comprises: a first seal ring; the sealing part is provided with a mounting groove for mounting a first sealing ring, and at least part of the first sealing ring protrudes out of the mounting groove, so that when the sealing gun blocks the liquid injection port, the first sealing ring seals a gap between the sealing part and the battery.

Further, the sealing part comprises a sealing component connected with the liquid injection port and a connecting component connected with the pushing part, and a second sealing ring is clamped between the sealing component and the connecting component.

Further, the closing member includes: the first outlet hole is opposite to the liquid injection port, and is communicated with the conveying channel and the pushing channel; the second outlet hole is used for being connected with the liquid injection port; the vacuum channel is arranged in the sealing part, one end of the vacuum channel is connected with the second outlet hole, the other end of the vacuum channel is connected with an exhaust hole, and the exhaust hole penetrates through one side of the sealing part; a mounting groove for installing first sealing washer, the mounting groove is the ring channel, and first hole and second are bored and all are located the inboard of mounting groove.

Furthermore, the connecting part comprises two connecting parts which are symmetrically arranged, each connecting part is provided with a channel groove, and the two connecting parts are spliced with each other to enable the two channel grooves to form a conveying channel, a pushing channel and an accommodating cavity for accommodating the pushing part.

Further, the pushing portion includes: the sliding sleeve is internally provided with a sliding channel and is fixedly arranged in the sealing part; the push rod comprises a push part which is arranged in the push channel in a sliding way and a sliding part which is arranged in the sliding channel in a sliding way.

Further, the sliding channel and the pushing channel are both cylindrical channels, the sliding part is of a cylindrical structure, and the outer diameter of the sliding part is larger than that of the pushing channel.

Further, the sealing gun comprises a third sealing ring, a fourth sealing ring and a pushing cylinder; the sealing part comprises a sealing component, one side of the sealing component is connected with the connecting component through a third sealing ring, and the other side of the sealing component is connected with the cylinder body of the pushing cylinder through a fourth sealing ring; at least part of a piston rod of the pushing cylinder penetrates through the sealing component and is connected with the sliding part so as to drive the sliding part to move in the sliding channel.

According to a second aspect of the present invention, there is provided a sealing apparatus comprising: the sealing gun described above; the pushing device is connected with the conveying channel of the sealing gun so as to convey the sealing plug into a first outlet hole which is formed in the sealing gun and is opposite to the liquid injection port of the battery; and the supply device is connected with the pushing device so as to convey the sealing plug into the conveying channel according to the preset orientation.

Further, the pushing device includes: the pushing seat is provided with a sealing plug channel and an air inlet channel on one side, and a conveying channel extending into the pushing seat is arranged at one end of the pushing seat; the sealing plug channel and the air inlet channel are communicated with the conveying channel, and the air inlet channel and the sealing plug channel are sequentially arranged along the extending direction of the conveying channel; the other side of the pushing seat is provided with an air outlet channel communicated with the air inlet channel; a transfer rod having an accommodating passage for accommodating the sealing plug, the transfer rod being movably disposed in the transfer passage so that the accommodating passage has a first preset position corresponding to the sealing plug passage and a second preset position corresponding to the air intake passage; and the driving device is connected with the conveying rod to drive the conveying rod to move between a first preset position and a second preset position.

According to a third aspect of the present invention, there is provided a sealing method, which is applied to the sealing apparatus described above; the sealing method comprises the following steps: step S1: conveying the sealing plug into a pushing device according to a preset direction by using a supply device; step S2: pushing the sealing plug into a first outlet hole of the sealing gun through air pressure by using a pushing device; step S3: compressing the battery by using a sealing gun, and isolating the liquid injection port from the external space so as to extract gas in the liquid injection port of the battery from the liquid injection port; step S4: and pushing the sealing plug into the liquid injection port by using the sealing gun so as to seal the liquid injection port.

By applying the technical scheme of the invention, the sealing gun is used for plugging the sealing plug into the liquid filling port of the battery, and comprises: the sealing part is used for plugging the liquid injection port, the sealing part is provided with a conveying channel for conveying a sealing plug and a pushing channel communicated with the conveying channel, and a first outlet hole of the conveying channel is used for being communicated with the liquid injection port; the pushing part is movably arranged in the pushing channel so as to push the sealing plug in the conveying channel to move through the pushing part to seal the sealing plug into the liquid filling port; and the sealing part is internally provided with a vacuum channel communicated with the liquid injection port so as to draw out gas in the battery before the liquid injection port is blocked by the sealing plug through the vacuum channel. With the above arrangement, the sealing portion is provided therein with a push passage opposed to the liquid injection port of the battery, a vacuum passage communicated with the liquid injection port of the battery, and a transport passage communicated with the push passage. When the operation is sealed to the notes liquid mouth of battery to sealed rifle, sealed rifle passes through sealing and battery butt, and sealed rifle is taken out the gas in with the battery from annotating the liquid mouth through vacuum passage, and the sealing plug passes through transfer passage this moment and carries in the promotion passageway. After the operation of extraction gas was accomplished to sealed rifle, the promotion portion in the sealed rifle was through promoting the passageway, and in pushing the sealing plug into annotating the liquid mouth, made the sealing plug with annotate liquid mouth interference fit to accomplish the operation of sealing of sealed rifle to the battery, thereby solved the battery among the prior art and at the unable exhaust problem of the in-process inside gas that seals.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a sealing gun according to the present invention;

FIG. 2 shows a schematic structural view of an embodiment of the capping apparatus of the present invention;

FIG. 3 shows a schematic view of the closure member of the sealing gun of the present invention;

FIG. 4 is a schematic view showing the construction of a coupling part of the sealing gun of the present invention;

FIG. 5 shows a schematic view of the construction of the sliding sleeve of the pusher section of the sealing gun of the present invention;

FIG. 6 is a schematic view showing the construction of a push rod of the pushing part of the sealing gun of the present invention;

fig. 7 shows a schematic view of the structure of the pushing means of the sealing apparatus of the present invention;

fig. 8 shows a schematic structural view of a pushing seat of a pushing device of the sealing apparatus of the present invention;

fig. 9 is a schematic view showing the structure of a battery for sealing work using the sealing gun of the present invention; and

fig. 10 shows a schematic view of a sealing plug for a sealing operation using the sealing gun of the present invention.

Wherein the figures include the following reference numerals:

10. sealing the gun; 11. a sealing part; 111. a delivery channel; 1111. a first exit orifice; 112. pushing the channel; 1131. a second exit orifice; 1132. an exhaust hole; 114. mounting grooves; 115. a sealing member; 116. a connecting member; 117. a sealing member; 1161. a connecting portion; 1163. an accommodating cavity; 12. a pushing part; 121. a sliding sleeve; 1211. a slide channel; 122. a push rod; 1221. a press-in part; 1222. a sliding part; 13. a push cylinder; 131. a piston rod; 20. a pushing device; 21. a pushing seat; 211. sealing the plug passage; 212. an air intake passage; 213. a transfer channel; 214. an air outlet channel; 22. a transfer rod; 221. a receiving channel; 23. a drive device; 30. a supply device; 31. a sealing plug; 40. a battery; 41. a liquid injection port; 1. a first seal ring; 2. a second seal ring; 3. a third seal ring; 4. and a fourth seal ring.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 10, the sealing gun of the present embodiment is used for sealing the sealing plug 31 in the pouring port 41 of the battery 40, and includes: a sealing part 11 for sealing off the pouring outlet 41, the sealing part 11 having a delivery passage 111 for delivering the sealing plug 31 and a push passage 112 communicating with the delivery passage 111, the first outlet 1111 of the delivery passage 111 being for communicating with the pouring outlet 41; a pushing part 12, at least part of the pushing part 12 being movably arranged in the pushing channel 112 to push the sealing plug 31 in the conveying channel 111 to move by the pushing part 12 so that the sealing plug 31 is blocked into the liquid injection port 41; the sealing part 11 also has a vacuum passage communicating with the liquid inlet 41, so that the gas in the battery 40 can be pumped out through the vacuum passage before the sealing plug 31 blocks the liquid inlet 41. With the above arrangement, the push passage 112 opposed to the charging port 41 of the battery 40, the vacuum passage communicating with the charging port 41 of the battery 40, and the transport passage 111 communicating with the push passage 112 are provided in the seal portion 11. When the sealing gun performs a sealing operation on the pouring port 41 of the battery, the sealing gun is brought into contact with the battery through the sealing portion 11, the sealing gun draws gas in the battery out of the pouring port 41 through the vacuum passage, and at this time, the sealing plug 31 is conveyed into the push passage 112 through the conveyance passage 111. After the operation of gas extraction is completed by the sealing gun, the pushing part 12 in the sealing gun pushes the sealing plug 31 into the liquid injection port 41 through the pushing passage 112, so that the sealing plug is in interference fit with the liquid injection port 41 to complete the sealing operation of the sealing gun on the battery, thereby solving the problem that the gas in the battery in the sealing process in the prior art can not be discharged.

In the sealing gun of the present embodiment, as shown in fig. 1, the sealing gun further includes: a first seal ring 1; the sealing part 11 is provided with an installation groove 114 for installing the first sealing ring 1, and at least part of the first sealing ring 1 is arranged to protrude from the installation groove 114, so that when the sealing gun blocks the liquid injection port 41, the first sealing ring 1 seals a gap between the sealing part 11 and the battery 40.

In the process that the sealing gun seals the liquid injection port 41 of the battery 40, in order to achieve the effect of sealing connection between the sealing part 11 and the battery, in the embodiment, the sealing gun further includes the first sealing ring 1, the sealing part 11 is provided with the installation groove 114, and the first sealing ring 1 is installed on the installation groove 114 of the sealing part 11. With this arrangement, when the sealing portion 11 abuts against the battery and the liquid pouring port 41 of the battery is vacuumized, a sealed space can be formed between the sealing portion 11 and the liquid pouring port 41, thereby ensuring that the sealing gun draws gas from the battery 40.

In the sealing gun of the present embodiment, as shown in fig. 1, the sealing portion 11 includes a sealing member 115 for connecting to the pouring port 41 and a connecting member 116 for connecting to the pushing portion 12, and the second gasket 2 is interposed between the sealing member 115 and the connecting member 116.

In order to connect the pushing portion 12 and the sealing portion 11, with the above arrangement, the pushing portion 12 sequentially pushes the sealing plug 31 into the liquid filling opening through the connecting portion 116 and the sealing member 115, and the second sealing ring 2 is used to ensure that the pushing portion 12 moves between the sealing member 115 and the connecting portion 116, so as to ensure the sealing connection between the sealing member 115 and the connecting portion 116.

As shown in fig. 1 and 3, in the sealing gun of the present embodiment, the sealing member 115 includes: a first outlet port 1111, the first outlet port 1111 being disposed opposite to the pouring outlet 41, the first outlet port 1111 communicating with both the feed passage 111 and the push passage 112; a second outlet hole 1131, the second outlet hole 1131 being used for connection to the pouring outlet 41; a vacuum channel, which is disposed inside the sealing member 115, and one end of the vacuum channel is connected to the second outlet 1131, and the other end of the vacuum channel is connected to an exhaust hole 1132, and the exhaust hole 1132 penetrates through one side of the sealing member 115; the mounting groove 114 is used for mounting the first sealing ring 1, the mounting groove 114 is an annular groove, and the first outlet hole 1111 and the second outlet hole 1131 are both located inside the mounting groove 114.

In the sealing gun of the present embodiment, as shown in fig. 3, the sealing member 115 has a first outlet 1111 and a second outlet 1131 on the side connected to the pouring outlet 41, the first outlet 1111 communicates with both the transfer passage 111 and the push passage 112, and the first outlet 1111 is disposed opposite to the pouring outlet 41 so that the sealing plug 31 is transferred from the outside into the first outlet 1111 when the sealing gun performs a sealing operation, thereby allowing the push portion 12 to push the sealing plug 31 into the pouring outlet 41. The second outlet 1131 is connected with the vacuum channel, and the gas in the liquid injection port 41 enters the vacuum channel through the second outlet 1131, and the other end of the vacuum channel is connected with an exhaust hole 1132, and the exhaust hole 1132 penetrates through one side of the sealing component 115, so that the gas in the vacuum channel is exhausted from the exhaust hole 1132, and the extraction of the gas in the battery 40 is completed. In this embodiment, the mounting groove 114 is disposed on the side of the sealing member 115 connected to the liquid inlet 41, the mounting groove 114 is an annular groove, and the first outlet 1111 and the second outlet 1131 are both located inside the mounting groove 114, so that when the sealing gun performs the sealing operation, the first outlet 1111 and the second outlet 1131 are both located inside the sealing space inside the mounting groove, thereby ensuring the performance of the sealing gun.

In the sealing gun of the present embodiment, as shown in fig. 7, the connecting part 116 includes two connecting parts 1161 symmetrically disposed, each connecting part 1161 is provided with a channel, and the two connecting parts 1161 are spliced to each other so that the two channel surround the conveying channel 111, the pushing channel 112, and the accommodating cavity 1163 for accommodating the pushing part 12, such a structure is simple and easy to implement, and the purpose of installing the pushing part 12 in the connecting part 116 is achieved.

As shown in fig. 1, 5, and 6, in the sealing gun of the present embodiment, the pushing portion 12 includes: a sliding sleeve 121, a sliding channel 1211 is arranged in the sliding sleeve 121, and the sliding sleeve 121 is fixedly arranged in the sealing part 11; the push rod 122, the push rod 122 includes a press-in portion 1221 slidably disposed in the push channel 112 and a sliding portion 1222 slidably disposed in the sliding channel 1211.

In the sealing gun of the present embodiment, the pushing part is composed of a sliding sleeve 121 and a push rod 122, the sliding sleeve 121 has a sliding channel 1211 therein, the sliding sleeve 121 is fixedly installed in the sealing part 11, and the push rod 122 includes a pressing part 1221 slidably disposed in the pushing channel 112 and a sliding part 1222 slidably disposed in the sliding channel 1211. When the push rod 122 receives an external pushing force, the slide member 1222 slides in the slide passage 1211, and the press-fitting portion 1221 completes the press-fitting of the seal plug 31 into the pouring port 41. In this embodiment, the sliding sleeve 121 is further provided with a solid lubricant insertion groove for applying a solid lubricant on the outside thereof, so that the friction between the sliding channel 1211 and the sliding portion 1222 is reduced during the operation of the sealing gun, thereby ensuring the performance of the sealing gun.

In the sealing gun of the present embodiment, as shown in fig. 1, 5 and 6, the sliding channel 1211 and the push channel 112 are both cylindrical channels, the sliding portion 1222 is cylindrical, and the outer diameter of the sliding portion 1222 is larger than the outer diameter of the push channel 112.

In this embodiment, the sliding channel 1211 and the pushing channel 112 are both cylindrical channels, and the sliding portion 1222 is cylindrical, so that the movement of the push rod 122 is smoother. The outer diameter (diameter of the outer circumferential surface) of the sliding portion 1222 is larger than the outer diameter of the push passage 112, so that the sealing gun has a limiting function on the press-in portion 1221, and prevents the push rod 122 from moving excessively, thereby causing damage to the battery 40.

As shown in fig. 1, the sealing gun comprises a third sealing ring 3, a fourth sealing ring 4 and a pushing cylinder 13; the sealing part 11 comprises a sealing component 117, one side of the sealing component 117 is connected with the connecting component 116 through a third sealing ring 3, and the other side of the sealing component 117 is connected with the cylinder body of the pushing cylinder 13 through a fourth sealing ring 4; at least a portion of the piston rod 131 of the push cylinder 13 passes through the sealing member 117 and is connected to the sliding portion 1222 to move the sliding portion 1222 within the sliding channel 1211.

For the purpose of pushing the push rod 122 to move, in the embodiment, the sealing gun includes a third sealing ring 3, a fourth sealing ring 4 and a push cylinder 13, at least a portion of the piston rod 131 of the push cylinder 13 passes through the sealing member 117 and is connected to the sliding portion 1222 to move the sliding portion 1222 within the sliding channel 1211. One side of the sealing part 117 is connected with the connecting part 116 through the third sealing ring 3, and the other side of the sealing part 117 is connected with the cylinder body of the push cylinder 13 through the fourth sealing ring 4, so that the sealing performance inside the sealing gun is ensured.

As shown in fig. 2, the sealing apparatus of the present embodiment includes: the sealing gun 10 as described above; a pushing device 20, wherein the pushing device 20 is connected with the conveying channel 111 of the sealing gun 10 to convey the sealing plug 31 into the first outlet 1111 arranged opposite to the liquid injection port 41 of the battery 40 of the sealing gun 10; a supply device 30, wherein the supply device 30 is connected with the pushing device 20 to convey the sealing plug 31 into the conveying channel 111 according to the preset orientation.

The sealing apparatus of the present embodiment includes a sealing gun 10, a pushing device 20, and a supplying device 30, and the sealing gun 10 is used for performing vacuum-pumping and sealing operations on the battery 40. The pushing means 20 is used to push the sealing plug 31 into position within the sealing gun. The feeding means is to feed the sealing plug 31 into the sealing pusher in a predetermined orientation (head towards the rear). By adopting the arrangement, the automatic gas extraction and sealing of the battery 40 can be completed, and the production efficiency is improved.

In the sealing apparatus of the present embodiment, the pushing device 20 includes: the pushing seat 21, one side of the pushing seat 21 has a sealing plug channel 211 and an air inlet channel 212, and one end of the pushing seat 21 has a delivery channel 213 extending to the inside of the pushing seat 21; the sealing plug passage 211 and the intake passage 212 are both communicated with the transfer passage 213, and the intake passage 212 and the sealing plug passage 211 are sequentially arranged in the extending direction of the transfer passage 213; the other side of the pushing seat 21 is provided with an air outlet channel 214 communicated with the air inlet channel 212; a transfer rod 22, the transfer rod 22 having a receiving passage 221 for receiving the sealing plug 31, the transfer rod 22 being movably disposed in the transfer passage 213 such that the receiving passage 221 has a first preset position corresponding to the sealing plug passage 211 and a second preset position corresponding to the air intake passage 212; and the driving device 23, wherein the driving device 23 is connected with the transmission rod 22 to drive the transmission rod 22 to move between the first preset position and the second preset position.

With the above arrangement, the sealing element 31 is conveyed into the sealing gun 10 with a certain kinetic energy, so that the sealing plug 31 can reach the first outlet hole 1111, and the pushing portion 12 can push the sealing plug into the liquid inlet 41 to complete the sealing operation.

The sealing method of the present embodiment is applied to the sealing apparatus as shown in fig. 10; the sealing method comprises the following steps: step S1: the sealing plug 31 is conveyed into the pushing device 20 according to the preset orientation by the supply device 30; step S2: pushing the sealing plug 31 into the first outlet 1111 of the sealing gun 10 by using the pushing device 20; step S3: with the sealing gun 10, the battery 40 is pressed and the pouring port 41 is isolated from the external space, so that the gas in the pouring port 41 of the battery 40 is drawn out from the pouring port 41; step S4: the sealing plug 31 is pushed into the pouring port 41 by the sealing gun 10 to close the pouring port 41.

The following is a description of an embodiment of the sealing apparatus of the present invention:

the sealing equipment comprises a sealing plug 31 vibration supply device 30, a pushing device 20, a sealing gun 10 and an auxiliary device (a CCD, a three-axis servo positioning system, a rack and an auxiliary clamp); the sealing plug vibration supply device (supply device 30) is used for automatically conveying the sealing plug 31, the sealing plug 31 is used for sealing the liquid injection port 41 of the hard shell battery 40, the sealing plug guide pipe is used for connecting the sealing plug 31 vibration supply device 30 with the pushing device 20, the sealing plug guide pipe is used for connecting the pushing device 20 with the sealing gun 10, the sealing plug guide pipe is made of a hose material and can be moved at will, the pushing device 20 is used for conveying a plurality of sealing plugs 31 into a single sealing plug 31 for conveying, the sealing gun 10 can automatically plug the sealing plug 31 into the liquid injection port 41 after vacuumizing the hard shell battery 40, the vacuum sealing effect is achieved, and the auxiliary device is used for positioning, supporting and fixing the hard shell battery negative pressure sealing equipment.

The automatic delivery of the sealing plug 31 is as follows: the supply device 30 is a sealing plug conveying device, the hopper is vertically vibrated by the pulse electromagnet, the sealing plug 31 in the hopper rises along the spiral track after being vibrated, the sealing plug 31 conveyed in the reverse direction (with the front end part) falls into the bottom of the hopper through the gap between the tracks for conveying again, and the sealing plug 31 conveyed in the forward direction is orderly conveyed into the sealing plug guide pipe.

The sealing plug 31 delivers: the sealing plug 31 in the sealing plug guide pipe is pushed into the sealing plug channel 211 of the pushing device 20 of the upper cover of the pushing device 20 by the supplying device 30 and falls into the accommodating channel 221 of the conveying rod 22, because the accommodating channel 221 has only one sealing plug 31, after the photoelectric switch senses that the sealing plug 31 is in place, the driving device 23 of the sealing plug 31 moves (retreats), only one sealing plug 31 is pulled to the air outlet channel 214 position of the bottom plate of the pushing device 20, compressed air is sprayed from the air inlet channel 212 of the upper cover of the pushing device 20, the sealing plug 31 is pushed to slide out from the air outlet channel 214 of the bottom plate of the pushing device 20, the sealing plug guide pipe is pushed into the quick connector hole of the sealing gun 10 cavity sealing part 115, and then the sealing plug is guided into the arc-shaped hole (conveying channel 111) along the colloidal particles of the sealing gun 10 cavity sealing part 115 and slides into the first outlet hole 1111 of the sealing gun. (the arc of the hole must be greater than the length of the sealing plug 31 to facilitate passage of the sealing plug 31).

The vacuum pumping process is as follows: after the CCD photographs the hard-shell battery 40 to confirm the position of the liquid injection port 41, the hard-shell battery 40 is conveyed to the position right below the sealing gun 10 by the three-axis servo conveying and positioning system, the sealing gun 10 presses down to block the liquid injection port 41 of the hard-shell battery 40, a closed space is formed among the hard-shell battery 40, the sealing gun 10 and the pushing device 20 through the sealing ring, the vacuum valve is opened, vacuum is extracted from a second outlet hole 1131 of the lower end plate of the sealing gun 10, and air in the closed space of the hard-shell battery 40, the sealing gun 10 and the pushing device 20 is extracted from an exhaust hole 1132 of the.

The process of pressing the sealing plug 31 is as follows: when the vacuum reaches the set value, the piston rod of the cylinder of the sealing gun 10 pushes the push rod 122 to press the sealing plug 31 into the liquid injection port 41 along the sliding sleeve 121 (matched with a self-made self-lubricating sleeve), and the press-in depth of the sealing plug 31 is adjusted by the stroke adjusting screw of the cylinder of the sealing gun 10.

The working process of the sealing equipment is as follows: after the sealing plug 31 is pressed in place → the steel needle is retracted, the vacuum is released → the sealing gun 10 and the transmission rod 22 are retracted in place → the sealing plug 31 is sent → the sealing plug 31 is divided → the vacuum is pumped → the sealing plug 31 is pressed in, and the process is repeated.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

as shown in fig. 1 to 10, the sealing gun of the present embodiment is used for sealing the sealing plug 31 in the pouring port 41 of the battery 40, and includes: a sealing part 11 for sealing off the pouring outlet 41, the sealing part 11 having a delivery passage 111 for delivering the sealing plug 31 and a push passage 112 communicating with the delivery passage 111, the first outlet 1111 of the delivery passage 111 being for communicating with the pouring outlet 41; a pushing part 12, at least part of the pushing part 12 being movably arranged in the pushing channel 112 to push the sealing plug 31 in the conveying channel 111 to move by the pushing part 12 so that the sealing plug 31 is blocked into the liquid injection port 41; the sealing part 11 also has a vacuum passage communicating with the liquid inlet 41, so that the gas in the battery 40 can be pumped out through the vacuum passage before the sealing plug 31 blocks the liquid inlet 41. With the above arrangement, the push passage 112 opposed to the charging port 41 of the battery 40, the vacuum passage communicating with the charging port 41 of the battery 40, and the transport passage 111 communicating with the push passage 112 are provided in the seal portion 11. When the sealing gun performs a sealing operation on the pouring port 41 of the battery, the sealing gun is brought into contact with the battery through the sealing portion 11, the sealing gun draws gas in the battery out of the pouring port 41 through the vacuum passage, and at this time, the sealing plug 31 is conveyed into the push passage 112 through the conveyance passage 111. After the operation of gas extraction is completed by the sealing gun, the pushing part 12 in the sealing gun pushes the sealing plug 31 into the liquid injection port 41 through the pushing passage 112, so that the sealing plug is in interference fit with the liquid injection port 41 to complete the sealing operation of the sealing gun on the battery, thereby solving the problem that the gas in the battery in the sealing process in the prior art can not be discharged.

The sealing equipment provided by the invention has the advantages that the special sealing plug 31 is conveyed into the pushing device 20 in the same direction and orderly by utilizing the sealing plug 31 to vibrate the conveying disc, the sealing plug 31 is conveyed into the cavity of the sealing gun 10 by the pushing device 20, the negative pressure gun vacuumizes the battery, and after the vacuum value is reached, the sealing plug 31 is pressed into the liquid injection port for sealing, so that the absolute vacuum sealing of the battery is realized, the contact between a pole piece and water in the air is avoided, and a play space is provided for the subsequent electrochemical reaction of battery charging and discharging.

The sealing gun of the invention integrates the functions of vacuumizing and pressing the sealing plug, and has the advantages of simple structure, good sealing effect and convenient operation and maintenance.

The sealing equipment has simple structure and convenient operation, and solves the problems of battery electrical property reduction and structural deformation caused by normal pressure packaging.

The sealing equipment provided by the invention is provided with the pushing device 20, so that a simple conveying device for the sealing plug 31 is provided, and the single sealing plug 31 can be conveniently and independently conveyed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.