Residual liquid removal device

Abstract

The present invention relates to a residual liquid removal device for cleaning a battery injection port, comprising an air inlet pipe; an exhaust pipe, the exhaust pipe being connected to the battery injection port; and a cleaning head assembly, the cleaning head assembly comprising at least one air duct, one end of the air duct being connected to the air inlet pipe, and the other end of the air duct being abutted against the battery injection port. The residual liquid removal device provided in the present application introduces compressed air into the cleaning head assembly, and utilizes at least one air duct on the cleaning head assembly to spray high-pressure airflow at the battery injection port and atomize the residual liquid at the injection port, and then utilizes an exhaust device to extract the atomized electrolyte residual liquid to achieve the purpose of cleaning. The residual liquid removal device provided in the present application is pollution-free, and waste gas and waste liquid are easy to recycle; the electrolyte injection hole residue can be efficiently cleaned, no consumables are required during the cleaning process, and no material replacement is required, which effectively reduces production costs, and ultimately achieves the purpose of fast and efficient cleaning, and further meets the requirements of 24-hour unmanned operation.

Description

Technical Field

[0001] The invention relates to the technical field of battery production equipment, and in particular to a residual liquid removing device. Background Art

[0002] After the lithium battery is sealed after the electrolyte is injected, there will be residues at the injection port, causing contamination of the injection port. The traditional method is to use non-woven cloth to wipe it, but the battery injection port is generally equipped with steps, and the wiping method cannot effectively clean the sharp corners of the steps, and the removal effect is not ideal. In addition, non-woven fabrics are consumables and need to be replaced frequently, which is inefficient and costly. In addition, lithium batteries usually need to be injected twice. The first injection requires injecting electrolyte into the battery, and the second injection is to replenish the electrolyte that has been injected once. After the second injection is completed, the battery injection port needs to be completely closed. Whether it is a single injection or a secondary injection, there will be residues at the injection port, which need to be cleaned.

[0003] Currently, the wiping method is used to clean the lithium battery filling port. The lithium battery filling port needs to be completely closed before the cleaning can be carried out, which cannot meet the cleaning requirements of a single injection. In addition, the wiping method cannot effectively clean the sharp corners of the filling port, and there are problems such as large consumption of non-woven fabrics, low efficiency, and high cost. Summary of the invention

[0004] Based on this, when using the wiping method to clean the residual liquid at the lithium battery filling port, it is necessary to seal the filling port first, and the sharp corners of the filling port cannot be effectively cleaned. There are problems such as large consumption of non-woven fabric, low efficiency and high cost. A residual liquid removal device is provided.

[0005] A residual liquid removal device is used for cleaning a battery filling port, comprising an air inlet pipe; an exhaust pipe, the exhaust pipe being connected to the battery filling port; and a cleaning head assembly, the cleaning head assembly comprising at least one air duct, one end of the air duct being connected to the air inlet pipe, and the other end of the air duct being abutted against the battery filling port.

[0006] Furthermore, the cleaning head assembly also includes an air outlet channel, the air outlet channel is communicated with the exhaust pipe, and the air duct is arranged along the circumference of the air outlet channel.

[0007] Further, the air duct includes a plurality of first air ducts and a plurality of second air ducts, one end of the first air duct is connected to the air inlet pipe, the other end of the first air duct is connected to the second air duct, and one end of the second air duct abuts against the battery filling port.

[0008] Furthermore, the first air duct and the second air duct are arranged at an angle, and one end of the second air duct abutting against the battery filling port is away from the air outlet channel.

[0009] Further, the cross-section of the first air duct includes a cylindrical shape, and the cross-section of the second air duct includes an elliptical shape or a racetrack shape.

[0010] Furthermore, the air duct comprises a spiral air duct, the spiral air duct takes the air outlet channel as an axis, one end of the spiral air duct is connected to the air inlet pipe, and the other end of the spiral air duct abuts against the battery filling port.

[0011] Furthermore, the cleaning head assembly includes a first cleaning head and a second cleaning head, the first cleaning head is connected to the second cleaning head, the first air duct is arranged in the first cleaning head, and the second air duct is arranged in the second cleaning head.

[0012] Furthermore, the cleaning head assembly includes a first cleaning head and a second cleaning head, the first cleaning head is sleeved in the second cleaning head to form the first air duct, and the second air duct is arranged at the end of the first cleaning head.

[0013] Furthermore, the air duct further includes a third air duct, and the third air duct is communicated with the first air duct and / or the second air duct and abuts against the battery filling port.

[0014] Furthermore, it also includes a main body, the cleaning head assembly is arranged on the main body, and the main body is connected to the air inlet pipe and the exhaust pipe.

[0015] Further, the main body includes a first main body and a second main body, the cleaning head assembly is arranged in the first main body, the exhaust pipe is connected to the second main body, and the air intake pipe is connected to the first main body and / or the second main body.

[0016] Furthermore, a fourth air duct is formed between the cleaning head assembly and the first main body, one end of the fourth air duct is connected to the air inlet pipe, and the other end of the fourth air duct abuts against the battery filling port.

[0017] Furthermore, it also includes a base, which is connected to the main body and abuts against the battery filling port, and the surface of the base in contact with the battery filling port includes a sealing structure.

[0018] Furthermore, it also includes a blocking rod assembly, which is connected to the cleaning head assembly. The blocking rod assembly can pass through the cleaning head assembly and block the battery filling port.

[0019] Furthermore, the blocking rod assembly includes a driving mechanism, a floating block and a blocking rod, the floating block connects the driving mechanism and the blocking rod, and the blocking rod passes through the cleaning head assembly.

[0020] The residual liquid removal device provided in the present application includes a cleaning head assembly, which is connected to an air inlet pipe and an exhaust pipe and abuts against the battery filling port. The residual liquid at the battery filling port is removed by introducing compressed gas through an air duct provided in the cleaning head assembly. Specifically, compressed air is introduced into the cleaning head assembly, and through at least one air duct on the cleaning head assembly, a high-pressure airflow is sprayed on the battery filling port to atomize the residual liquid at the filling port, and then a vacuum device is used to extract the atomized electrolyte residual liquid to achieve the purpose of removal. The residual liquid removal device provided in the present application is pollution-free, and waste gas and waste liquid are easy to recycle; the residue in the electrolyte filling hole can be efficiently cleaned, and no consumables or material replacement are required during the cleaning process, thereby effectively reducing production costs, and ultimately achieving the purpose of fast and efficient cleaning, and being able to meet the requirements of 24-hour unmanned operation.

[0021] The various specific structures of the present application and their functions and effects will be further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the residual liquid removal device of the first embodiment of the present application;

[0023] Figure 2 is a cross-sectional view of a residual liquid removal device according to Embodiment 1 of the present application;

[0024] Figure 3 A three-dimensional diagram of a cleaning head assembly according to Embodiment 1 of the present application;

[0025] Figure 4-1 is a cross-sectional view of a cleaning head assembly according to Embodiment 2 of the present application;

[0026] Figure 4-2 A three-dimensional diagram of a cleaning head assembly according to Embodiment 2 of the present application;

[0027] Figure 5-1 is a cross-sectional view of a residual liquid removal device according to Embodiment 3 of the present application;

[0028] Figure 5-2 It is a partial enlarged view of the residual liquid removal device 1-1 of the third embodiment of the present application;

[0029] Figure 6-1 This is a front view of the first cleaning head of the third embodiment of the present application;

[0030] Figure 6-2 A top view of the first cleaning head of the third embodiment of the present application;

[0031] Figure 6-3 A cross-sectional view of a first cleaning head according to Embodiment 3 of the present application;

[0032] Figure 7is a cross-sectional view of a cleaning head assembly according to a fourth embodiment of the present application;

[0033] Figure 8 is a cross-sectional view of a cleaning head assembly according to Embodiment 5 of the present application;

[0034] Fig. 9 It is a front view of the residual liquid removal device of Example 6 of the present application;

[0035] Figure 10-1 is a cross-sectional view of a residual liquid removal device according to Embodiment 6 of the present application;

[0036] Figure 10-2 It is a partial enlarged view of the residual liquid removal device 2-1 of the sixth embodiment of the present application;

[0037] Fig.11 It is a three-dimensional diagram of the cleaning head assembly of the sixth embodiment of the present application;

[0038] Fig.12 is a cross-sectional view of a residual liquid removal device according to Embodiment 7 of the present application;

[0039] Fig.13 This is a three-dimensional diagram of the cleaning head assembly of embodiment 7 of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be further described clearly and completely below in conjunction with the accompanying drawings. However, it should be noted that the following embodiments are only some preferred embodiments in the present application and do not involve all embodiments covered by the technical solutions of the present application.

[0041] It should be noted that, in the description of this application, when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled 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. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] See also Figure 1-Figure 3As shown, the residual liquid removal device 1 of the first embodiment of the present application is connected to the liquid injection port 21 of the battery 2, and the residual liquid removal device 1 includes an air inlet pipe 11, an exhaust pipe 12, a main body 13, a cleaning head assembly 14 and a base 15. Among them, the cleaning head assembly 14 is arranged inside the main body 13, one end of the main body 13 is connected to the exhaust pipe 12, and the other end of the main body is connected to the base 15, and the circumference of the main body is connected to multiple air inlet pipes 11 (at least one). An air inlet channel 111 is arranged inside the air inlet pipe 11, and an air inlet 112 is arranged at the end. Preferably, the air inlet 112 can be a venting joint, such as a quick plug joint, and the other end of the air inlet pipe 11 is connected to the main body 13, such as by a threaded connection. It should be noted that the number of air inlet pipes 11 includes at least one, preferably, the air inlet pipes 11 are four, and are evenly arranged around the circumference of the main body 13. The exhaust pipe 12 is installed on the main body 13, and an exhaust channel 121 is arranged in the exhaust pipe 12, and an exhaust port 122 is arranged at the end. The exhaust port 122 can select a structure similar to the air inlet 112. Preferably, the exhaust channel 121 is arranged perpendicular to the intake channel 111 to facilitate the circulation of gas.

[0044] An air outlet channel 141 is provided inside the cleaning head assembly 14, and a plurality of air ducts are circumferentially provided along the air outlet channel 141, one end of the air duct is connected to the air inlet channel 111, and the other end abuts against the battery liquid filling port 21; one end of the air outlet channel 141 abuts against the battery liquid filling port 21, and the other end is communicated with the exhaust channel 121, so that the battery liquid filling port 21 is communicated with the exhaust channel 121. In use, compressed air is input through the air inlet pipe 11. If the air inlet pipe 11 is connected to an air pump, the compressed air is sprayed on the battery liquid filling port 21 through the air duct on the cleaning head assembly 14, so that the residual liquid on the battery liquid filling port 21 is atomized, and then the gas-liquid mixture is extracted through the exhaust device connected to the end of the exhaust pipe 12, so as to achieve the cleaning effect on the battery liquid filling port 21.

[0045] A plurality of air ducts are arranged on the cleaning head assembly 14 in the first embodiment, specifically, including at least one first air duct 142 and at least one second air duct 143. The first air duct 142 and the second air duct 143 are connected one-to-one. One end of the first air duct 142 is connected to the second air duct 143, and the other end is connected to the air intake pipe 11. One end of the second air duct 143 abuts against the battery filling port 21, so that the compressed air passes through the first air duct 142 and the second air duct 143 and is sprayed onto the battery filling port 21. In order to accelerate the compressed air passing through the first air duct 142 after entering the second air duct 143, the aperture of the first air duct 142 is larger than the aperture of the second air duct 143, and the first air duct 142 and the second air duct 143 are arranged at a predetermined angle. For example, the first air duct 142 is arranged parallel to the direction of the air outlet channel 141, and the end of the second air duct 143 abutting against the battery filling port 21 is arranged away from the air outlet channel 141, so that the second air duct 143 forms a trumpet shape at the battery filling port 21, which is convenient for guiding the outflow of atomized gas.

[0046] In a preferred embodiment, the first air duct 142 is a cylindrical channel, and the second air duct 143 is an elliptical / runway-shaped channel. One end of the first air duct 142 is connected to the air inlet channel 111, and the other end of the first air duct 142 is connected to one end of the second air duct 143. The other end of the second air duct 143 is connected to the outside world. When the residual liquid removal device 1 is connected to the battery filling port 21, the other end of the second air duct 143 can extend into the battery filling port 21.

[0047] In addition, since the battery liquid filling port 21 is generally a stepped surface structure, in order to achieve a better cleaning effect, a base 15 is provided between the cleaning head assembly 13 and the battery liquid filling port 21, and a cavity (not marked) is provided in the base 15, so that the cleaning head assembly 13 is placed in the cavity of the base 15 and connects the battery liquid filling port 21 and the exhaust pipe 12. A sealing structure 151, such as a sealing ring, is provided on the surface of the base 15 in contact with the battery liquid filling port 21, so that the residual liquid after atomization is sealed and can only be discharged through the exhaust channel 121, thereby ensuring the cleaning effect of the battery liquid filling port 21.

[0048] Figure 4-1 The figure shows a cross-sectional view of the cleaning head assembly of the second embodiment of the present application. Figure 4-2 The figure shows a three-dimensional diagram of the cleaning head assembly of the second embodiment of the present application, combined with Figure 4-1 and Figure 4-2 As shown, the cleaning head assembly 24 in the second embodiment includes an air outlet channel 241 and a plurality of air ducts 242. The air outlet channel 241 in the second embodiment has the same function and structure as the air outlet channel 141 in the first embodiment, so no further elaboration will be given here. The plurality of air ducts 242 are spiral air ducts arranged along the outer wall of the cleaning head assembly 24, and the spiral air duct 242 rotates with the air outlet channel 241 as the axis. When the cleaning head assembly 24 is installed inside the main body 13, the outer wall of the spiral air duct 242 and the inner wall of the main body 13 form an air duct structure. At the same time, one end of the spiral air duct 242 can be connected to the air inlet pipe 11, and the other end can abut against the battery filling port 21, thereby forming an air duct structure for the compressed gas to pass through. Furthermore, a plurality of sealing components (not shown) are arranged on the surface of the cleaning head assembly 24 in contact with the main body 13, thereby ensuring that no leakage occurs when the airflow is input along the spiral air duct 242. When the compressed air enters from the air inlet pipe 11, it is blown obliquely to the step surface of the battery filling port 21 at a very high speed through the inclined spiral air duct 242, so that the electrolyte remaining in the battery filling port 21 is atomized and then discharged and collected from the air outlet pipe 12. Similar to the first embodiment, the other end of the main body 13 is connected to the base 15, and the structure and function of the base 15 are the same as those of the first embodiment, so no further explanation is given here.

[0049] Figure 5-1What is shown is a cross-sectional view of the residual liquid removal device of the third embodiment of the present application. The third embodiment adopts a double-layer air duct to clean the battery filling port 21, which can effectively improve the cleaning effect. Specifically, it includes a plurality of air inlet pipes 11 (at least one), an exhaust pipe 12, a first main body 131, a second main body 132 and a cleaning head assembly 34, wherein the first main body 131 is connected to the second main body 132, the cleaning head assembly 34 is installed in the first main body 131, and the exhaust pipe 12 is connected to the second main body 132, and the connection method includes a fixed connection and a detachable connection. Preferably, the second main body 132 can be integrally formed with the exhaust pipe 12. The air inlet pipe 11 is respectively connected to the first main body 131 and the second main body 132, and the compressed air converges at the cleaning head assembly 34 through the first main body 131 and the second main body 132, and the battery filling port 21 is cleaned, and the residual electrolyte is recovered from the exhaust pipe 12.

[0050] Figure 5-2 It is a partial enlarged view of the residual liquid removal device 1-1 of the third embodiment of the present application. The cleaning head assembly 34 includes a first cleaning head 341 and a second cleaning head 342. In a preferred embodiment, the first cleaning head 341 and the second cleaning head 342 are manufactured separately, and the first cleaning head 341 is sleeved inside the second cleaning head 342. An air duct 411 is arranged on the first cleaning head 341, and the air duct 411 is in the shape of a through hole. An air duct 421 is arranged on the second cleaning head 342, and the air duct 421 is connected with the air duct 411. When the first cleaning head 341 and the second cleaning head 342 are sleeved together, the first air duct can be formed on the surface where the air duct 421 and the air duct 411 are connected to each other. Further, a second air duct 422 is arranged at the end of the first cleaning head 341, and one end of the second air duct 422 is connected with the first air duct, and the other end abuts against the battery filling port 21. The cleaning head assembly 34 is designed to be split, so that it is easy to disassemble, so as to better clean the multiple air ducts on the cleaning head assembly 34.

[0051] A plurality of air inlet channels 111 are circumferentially connected to the second body 132, and an air duct 321 is arranged in the second body 132. The air duct 321 is in the shape of a through hole, so when the first body 131, the second body 132 and the cleaning head assembly 34 are connected as a whole, the air duct 321 can be connected to the air duct 411 on the cleaning head assembly 34. The compressed gas flows in from the air inlet channel 111 on the second body 132, and is sprayed at the battery liquid filling port 21 through the air duct 411, the air duct 421 and the second air duct 422 respectively, and finally achieves the function of cleaning the residual liquid on the battery liquid filling port 21.

[0052] In a preferred embodiment, there is a gap between the second cleaning head 342 and the first body 131, and a fourth air duct 311 is formed in the gap, one end of the fourth air duct 311 abuts against the battery filling port 21, and the other end of the fourth air duct 311 is connected to the air inlet channel 111, wherein the air inlet channel 111 is circumferentially arranged on the first body 131, so that compressed air can flow in through the air inlet channel 111 on the first body 131, and be sprayed at the battery filling port 21 through the fourth air duct 311. The fourth air duct 311 is combined with the second air duct 422 to enhance the airflow sprayed at the battery filling port 21, thereby enhancing the atomization effect. However, it should be noted that this structure is only a preferred embodiment, and does not mean that the technical solution provided in this application is limited to setting a gap between the cleaning head assembly 34 and the first body 131. When the cleaning head assembly 34 is tightly fitted at the first body 131, the technical effect can also be achieved.

[0053] In order to further optimize the structure, the first body 131 in the third embodiment can be integrated with the base 15 in the first embodiment, and a sealing structure 312 is provided at the junction of the first body 131 and the battery liquid injection port 21 to prevent leakage of the atomized residual liquid. Finally, the atomized residual liquid flows into the exhaust pipe 121 through the air outlet channel 343 on the cleaning head assembly 34.

[0054] See also Figure 6-1 to Figure 6-3 In the related structural diagram of the first cleaning head of the third embodiment of the present application shown in , a plurality of air ducts 411 are arranged at one end of the first cleaning head 341, and a plurality of second air ducts 422 are arranged at the other end, wherein the air duct 411 is a through hole, and the second air duct 422 passes through the end of the first cleaning head 341. When the second cleaning head 342 is combined with the first cleaning head 341, there is a gap in the middle of the combination of the two, thereby forming a first air duct. Therefore, compressed air can pass through the air duct 411 and flow into the second air duct 422 through the first air duct, and finally flow out through the air outlet channel 343. Further, combined with Figure 5-2 In order to ensure that the compressed air can flow into the air duct 411 through the air duct 321, an air outlet 412 is set at the end of the air duct 411, that is, the joint surface between the air duct 411 and the air duct 321 is expanded, thereby preventing the problem of ineffective gas input due to the installation error between the second body 132 and the first cleaning head 341.

[0055] Based on the concept of the third embodiment, a preferred embodiment is provided, that is, the cleaning head assembly is composed of a first cleaning head and a second cleaning head, the first air duct is arranged in the first cleaning head, the second air duct is arranged in the second cleaning head, and the first cleaning head and the second cleaning head are connected together. The cleaning head assembly with this structure is easy to disassemble and clean the air duct, and is not only applicable to the residual liquid removal device in the third embodiment, but also to the residual liquid removal device in the first embodiment.

[0056] Figure 7 The figure shows a cross-sectional view of the cleaning head assembly of the fourth embodiment of the present application. Figure 8 What is shown is a cross-sectional view of the cleaning head assembly of the fifth embodiment of the present application. Based on the concept of the third embodiment, the cleaning head assembly provided in the fourth and fifth embodiments adopts an integrated structural design, and the first cleaning head 341 and the second cleaning head 342 in the third embodiment are designed as one body, thereby further reducing the processing cost. Since the other structures of the residual liquid removal device in the fourth and fifth embodiments are not much different from the structure in the third embodiment, no further description will be made about the other structures of the residual liquid removal device in the fourth and fifth embodiments. The cleaning head assembly 44 in the fourth embodiment includes a first air duct 441 and a second air duct 442. The first air duct 441 and the second air duct 442 are connected and pass through the cleaning head assembly 44. The second air duct 442 can abut against the battery filling port 21, so that the compressed gas passes through the first air duct 441 and the second air duct 442 and is sprayed on the battery filling port 21. In order to accelerate the compressed air flowing through, preferably, the first air duct 441 is inclined, and the aperture of the second air duct 442 is smaller than the aperture of the first air duct 441, so that the compressed air produces an acceleration effect.

[0057] The cleaning head assembly 54 provided in the fifth embodiment is different from that in the fourth embodiment in that the second air duct 542 and the third air duct 543 are respectively provided at the ends of the first air duct 541, and the ends of the second air duct 542 and the third air duct 543 are both in contact with the battery liquid injection port 21, so that the compressed air can be sprayed at the battery liquid injection port 21 from two directions, thereby improving the atomization effect. It should be noted that the designer can select a reasonable combination according to actual needs, that is, the first air duct 541 can be combined with the second air duct 542 and the third air duct 543, or one of them can be selected for combination, as long as the atomization effect can be achieved, it is allowed by this application.

[0058] The residual liquid removal device provided in the third to fifth embodiments includes at least one air inlet pipe 11 (eight air inlet pipes in the figure) and an exhaust pipe 12. The air inlet pipe 11 is divided into two groups of four, one in the upper and one in the lower group. The airflow enters from the two groups of air inlet pipes respectively, passes through the inclined air duct in the cleaning head assembly, and then blows obliquely to the step surface of the battery liquid injection port 21 at a very high speed, so that the residual electrolyte is atomized, and finally discharged from the exhaust pipe 12 and collected for treatment. Since the air duct of the cleaning head assembly is tightly sealed around the battery liquid injection port 21, it can ensure that it is in a closed environment during operation to prevent environmental pollution caused by electrolyte leakage.

[0059] Further explanation: the above implementation mode is suitable for cleaning the battery after the second injection. The second injection is to replenish the electrolyte after the first injection. After the second injection is completed, the injection port of the battery will be completely closed. At this time, the residual liquid removal device is connected to the injection port of the battery to clean the electrolyte remaining on the injection port. However, in some special cases, it is necessary to clean the injection port after the battery is injected once. The first injection is to inject electrolyte into the battery through the injection cup. After the first injection is completed, the injection port is not closed. It is necessary to wait until the second injection is completed to close the injection port.

[0060] Figure 9-11 Shown are the drawings related to the residual liquid removal device of the sixth embodiment of the present application, which can solve the problem of cleaning the residual liquid at the battery filling port in the case of a single injection. The residual liquid removal device 1 also includes a blocking rod assembly 16, which is connected to the cleaning head assembly 64 and can pass through the cleaning head assembly 64 to block or release the battery filling port 21. The blocking rod assembly 16 includes a driving mechanism 161, a floating block 162 and a blocking rod 163. The driving mechanism 161 includes a cylinder, one end of the floating block 162 is connected to the driving mechanism 161, and the other end is connected to the blocking rod 163. The blocking rod 163 can pass through the exhaust channel 121 and the air outlet channel 644 in the cleaning head assembly 64, and under the action of the driving mechanism 161, it extends into the battery filling port 21 and blocks the battery filling port 21. When cleaning the residual liquid at the battery liquid injection port 21, the residual liquid removal device 1 is first pressed against the battery liquid injection port 21, and the driving mechanism 161 drives the blocking rod 163 to extend and block the battery liquid injection port 21 to prevent airflow from entering the battery and causing bulging, and then compressed air is introduced into the step slope of the battery liquid injection port 21 to atomize and discharge the residual liquid thereon. Further, the component material of the blocking rod 163 includes ceramics.

[0061] In order to prevent the blocking rod 163 from affecting the discharge of residual liquid after atomization, the exhaust pipe 17 in the sixth embodiment is arranged along the circumference of the cleaning head assembly 64. The residual liquid removal device provided in the sixth embodiment and the third embodiment, except for the blocking rod assembly 16, both use a double-layer air duct for cleaning. However, the difference is that in the third embodiment, a double-layer air intake pipe 11 is arranged along the circumference of the cleaning head assembly 34, and the exhaust pipe 12 is arranged perpendicular to the battery liquid filling port 21; while in the sixth embodiment, a layer of air intake pipe 11 and a layer of exhaust pipe 17 are arranged along the circumference of the cleaning head assembly 64. Based on this, the structure of the corresponding cleaning head assembly 64 in the sixth embodiment is also different from the structure of the cleaning head assembly 34 in the third embodiment.

[0062] As for the working principles of other characteristic parts, since the third embodiment is basically similar to the sixth embodiment, no excessive elaboration is made here. It should be noted that in the third embodiment, the base 15 is removed, and the function of the base 15 is combined with the first body 131; while in the sixth embodiment, the base 15 is separated from the first body 131. It should be noted that the specific combination of the base 15 and the body is not limited to the embodiments provided in this application, and the designer can combine them according to actual needs to obtain the most suitable structure.

[0063] An air outlet channel 644 is provided inside the cleaning head assembly 64. The air outlet channel 644 runs through the cleaning head assembly 64, and one end is connected to the second body 132. The exhaust pipe 17 is connected to the second body 132, so that the air outlet channel 644 is connected to the exhaust channel 171 on the exhaust pipe 17. A plurality of first air channels 642 and second air channels 643 are provided along the circumference of the cleaning head assembly 64. The first air channels 642 are connected to the second air channels 643, and the ends of the second air channels 643 are both against the battery injection port 21, so that the gas can be sprayed to the battery injection port 21. Preferably, a guide air channel 641 is provided at the end of the air outlet channel 644 close to the battery injection port 21, so that the residual liquid after atomization can be merged into the air outlet channel 644 through the guide air channel 641. During use, compressed gas flows into the first air duct 642 and the second air duct 643 through the air inlet channel 111 and is then sprayed to the battery filling port 21. The atomized exhaust gas is then discharged through the air outlet channel 644 and the exhaust channel 171. In addition, the atomized exhaust gas can also be discharged from the gap between the blocking rod 163 and the air outlet channel 644.

[0064] It should be noted that Figures 9 to 11 The sixth embodiment shown is only a preferred implementation mode. On the basis of not affecting the function of the blocking rod assembly 16, the exhaust pipe 17 and the blocking rod assembly 16 are combined into one, that is, the exhaust pipe 17 is arranged perpendicular to the battery filling port 21, and a double-layer air intake pipe 11 is arranged along the circumference of the cleaning head assembly 64. It is also able to solve the technical problems to be solved by the present application. Those skilled in the art can select a suitable structure according to actual conditions.

[0065] Figure 12-13 The figure shows the residual liquid removal device of the seventh embodiment of the present application. The blocking rod assembly 18 in the seventh embodiment is similar in structure to the blocking rod assembly 16 in the sixth embodiment, except that the blocking rod 183 in the seventh embodiment is larger in diameter than the blocking rod 163 in the sixth embodiment. Furthermore, the component material of the blocking rod 163 includes Teflon, polyetheretherketone and / or ceramic. At the same time, the cleaning head assembly 74 in the seventh embodiment is different in structure from the cleaning head assembly 64 in the sixth embodiment. For details, refer to Fig.13The cleaning head assembly 74 includes a first air duct 741 and a second air duct 742. Preferably, the first air duct 741 and the second air duct 742 are coaxially arranged, and the second air duct 742 abuts against the battery liquid filling port 21. Specifically, the second air duct 742 abuts against the surface of the battery 2, rather than the step surface of the battery liquid filling port 21. At this time, high-pressure gas is sprayed on the surface of the battery 2, so that the residual liquid between the battery 2 and the cleaning head assembly 74 is atomized and discharged through the air outlet channel 743 on the cleaning head 74.

[0066] It should be noted that in the implementation mode provided by the present application, each component is provided with a sealing structure in combination to prevent gas leakage. At the same time, the multiple embodiments provided by the present application and their corresponding cleaning head assemblies or other structures are not limited to the combination methods shown in the drawings or listed in the specification. As long as the technical solution of the present application can be implemented, those skilled in the art can freely combine them according to actual needs. At the same time, the multiple air duct structures provided in the above embodiments can be freely combined to better achieve the technical effect.

[0067] The residual liquid removal device provided in the present application includes a cleaning head assembly, which is connected to an air inlet pipe and an exhaust pipe and abuts against the battery filling port. The residual liquid at the battery filling port is removed by introducing compressed gas through an air duct provided in the cleaning head assembly. Specifically, compressed air is introduced into the cleaning head assembly, and through at least one air duct on the cleaning head assembly, a high-pressure airflow is sprayed on the battery filling port to atomize the residual liquid at the filling port, and then a vacuum device is used to extract the atomized electrolyte residual liquid to achieve the purpose of removal. The residual liquid removal device provided in the present application is pollution-free, and waste gas and waste liquid are easy to recycle; the residue in the electrolyte filling hole can be efficiently cleaned, and no consumables or material replacement are required during the cleaning process, thereby effectively reducing production costs, and ultimately achieving the purpose of fast and efficient cleaning, and being able to meet the requirements of 24-hour unmanned operation.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A residual liquid removal device for cleaning a battery filling port, characterized in that: include: Intake pipe; An exhaust pipe, the exhaust pipe being in communication with the battery liquid filling port; A cleaning head assembly, the cleaning head assembly includes an air outlet channel and at least one air duct, one end of the air outlet channel abuts the battery filling port, the other end of the air outlet channel is connected to the exhaust pipe, the air duct is arranged circumferentially along the air outlet channel, one end of the air duct is connected to the air inlet pipe, the other end of the air duct abuts the battery filling port, the air duct includes a plurality of first air ducts and a plurality of second air ducts, one end of the first air duct is connected to the air inlet pipe, the other end of the first air duct is connected to the second air duct, one end of the second air duct abuts the battery filling port, and the aperture of the first air duct is larger than the aperture of the second air duct.

2. The residual liquid removal device according to claim 1, characterized in that: The first air duct and the second air duct are arranged at an angle, and one end of the second air duct abutting against the battery liquid filling port is away from the air outlet channel.

3. The residual liquid removal device according to claim 2, characterized in that: The cross section of the first air duct includes a cylindrical shape, and the cross section of the second air duct includes an elliptical shape or a racetrack shape.

4. The residual liquid removal device according to claim 1, characterized in that: The air duct comprises a spiral air duct, the spiral air duct takes the air outlet channel as an axis, one end of the spiral air duct is connected to the air inlet pipe, and the other end of the spiral air duct abuts against the battery liquid filling port.

5. The residual liquid removal device according to claim 1, characterized in that: The cleaning head assembly includes a first cleaning head and a second cleaning head, the first cleaning head is connected to the second cleaning head, the first air duct is arranged in the first cleaning head, and the second air duct is arranged in the second cleaning head.

6. The residual liquid removal device according to claim 1, characterized in that: The cleaning head assembly comprises a first cleaning head and a second cleaning head. The first cleaning head is sleeved in the second cleaning head to form the first air duct. The second air duct is arranged at the end of the first cleaning head.

7. The residual liquid removal device according to claim 1, characterized in that: The air duct further includes a third air duct, which is communicated with the first air duct and / or the second air duct and abuts against the battery liquid filling port.

8. The residual liquid removal device according to any one of claims 1 to 7, characterized in that: It also includes a main body, the cleaning head assembly is arranged on the main body, and the main body is connected to the air inlet pipe and the exhaust pipe.

9. The residual liquid removal device according to claim 8, characterized in that: The main body comprises a first main body and a second main body, the cleaning head assembly is arranged in the first main body, the exhaust pipe is connected to the second main body, and the air intake pipe is connected to the first main body and / or the second main body.

10. The residual liquid removal device according to claim 9, characterized in that: A fourth air duct is formed between the cleaning head assembly and the first main body, one end of the fourth air duct is connected to the air inlet pipe, and the other end of the fourth air duct abuts against the battery liquid filling port.

11. The residual liquid removal device according to claim 8, characterized in that: It also includes a base, which is connected to the main body and abuts against the battery filling port, and the surface of the base that contacts the battery filling port includes a sealing structure.

12. The residual liquid removal device according to claim 1, characterized in that: It also includes a blocking rod assembly, which is connected to the cleaning head assembly. The blocking rod assembly can pass through the cleaning head assembly and block the battery filling port.

13. The residual liquid removal device according to claim 12, characterized in that: The blocking rod assembly comprises a driving mechanism, a floating block and a blocking rod, wherein the floating block connects the driving mechanism and the blocking rod, and the blocking rod passes through the cleaning head assembly.

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