Cleaning device for negative pressure pipeline of lithium battery formation

Abstract

The present invention discloses a cleaning device suitable for a negative pressure pipeline for lithium battery formation, comprising: a support and adjustment device, comprising a rectangular box surrounded by a bottom plate, a side plate and a top plate, and an adjustment component arranged on the top plate; a confluence and communication device, comprising a cleaning box, a communication block, a recovery pump, a cleaning pump and a solenoid valve group, the cleaning box is installed on the bottom plate; there are two communication blocks, which are respectively arranged on the inner wall of the side plate; the solenoid valve group comprises a cleaning solenoid valve and a recovery solenoid valve; a negative pressure nozzle connection device, which is installed on the top of the support and adjustment component, and comprises a nozzle docking interface fixing plate and a nozzle docking interface; and a controller, which is arranged in the rectangular box. The beneficial effects of the present invention are: it can effectively clean the entire section of the negative pressure pipeline from the negative pressure nozzle to the gas-liquid separator, is placed in the equipment storage position, can be operated by a stacker, saves operation time and saves manpower and material resources, the cleaning liquid can also be recycled, and a one-time filling of the cleaning liquid can clean multiple devices.

Description

Technical Field

[0001] The invention relates to a cleaning device suitable for a negative pressure pipeline of a lithium battery formation process, and is suitable for a negative pressure pipeline system in equipment for a lithium battery formation process. Background Art

[0002] The formation process is an important step in the production of square lithium batteries, and its purpose is to activate the battery. When the battery is undergoing the formation process, gas will be generated inside, and the industry generally adopts the method of pumping out negative pressure to extract the gas. As the gas is discharged, part of the electrolyte in the battery also enters the negative pressure pipeline. Over time, crystals are formed in the pipeline, blocking the pipeline and affecting the quality of the battery. Summary of the invention

[0003] The technical problem solved by the present invention is: in view of the defects and shortcomings of the prior art, a cleaning device suitable for the negative pressure pipeline of lithium battery formation is provided. This tooling has a simple structure and is easy to operate. It can effectively clean the negative pressure pipeline without disassembling the negative pressure module, saving manpower and improving work efficiency.

[0004] The technical solution of the present invention is:

[0005] A cleaning device suitable for a lithium battery formation negative pressure pipeline, characterized by comprising:

[0006] The support adjustment device comprises a rectangular box surrounded by a bottom plate, a side plate and a top plate, and an adjustment assembly arranged on the top plate, wherein the top plate is provided with a plurality of adjustment waist holes, the adjustment waist holes are arranged in two parallel rows along the length direction of the top plate and in a row along the width direction of the top plate; the adjustment assembly comprises an adjustment end plate and a positioning bar, the adjustment end plates are respectively fixedly arranged at the two short sides of the top plate; the positioning bar is arranged on the top plate in parallel and at intervals, and is parallel to the adjustment end plate;

[0007] The confluence and communication device is arranged in the rectangular box of the support and adjustment component, and includes a cleaning box, a connecting block, a recovery pump, a cleaning pump and a solenoid valve group, and the cleaning box is installed on the bottom plate; the connecting block has two blocks, which are respectively arranged on the inner walls of the two opposite side plates, and a passage is provided in the connecting block, and a row of connecting holes that can be connected to the passage is provided on the top of the connecting block, and a cleaning liquid through hole for the cleaning liquid to enter and exit is provided on the side of the connecting block; the solenoid valve group includes a cleaning solenoid valve and a recovery solenoid valve, and the cleaning solenoid valve is connected to the cleaning liquid through hole pipeline of the connecting block; the liquid outlet of the recovery pump is connected to the cleaning box, and the liquid inlet of the recovery pump is connected to the connecting block through the recovery solenoid valve, which is used to recycle the cleaning liquid in the negative pressure pipeline of the equipment to be cleaned into the cleaning box; the liquid inlet of the cleaning pump is connected to the cleaning box, and the liquid outlet of the cleaning pump is connected to the cleaning liquid through hole pipeline of the connecting block through the cleaning solenoid valve, which is used to introduce the cleaning liquid in the cleaning box into the negative pressure pipeline of the equipment to be cleaned;

[0008] A negative pressure nozzle connection device is installed on the top of the support adjustment component, including a nozzle docking interface fixing plate and a nozzle docking interface, wherein the nozzle docking interface fixing plate is detachably arranged on the two adjustment end plates and spans the entire row of adjustment waist holes; a row of nozzle docking interfaces for docking with the negative pressure nozzles of the negative pressure equipment is fixedly penetrated on the nozzle docking interface fixing plate, the nozzle docking interfaces correspond to the negative pressure nozzles of the equipment to be cleaned one by one, and the top of the nozzle docking interface docks with the negative pressure nozzle of the equipment to be cleaned, and the bottom of the nozzle docking interface is connected to the connecting hole pipeline of the connecting block;

[0009] And a controller is arranged in the rectangular box, and the control end of the recovery pump, the control end of the cleaning pump, the control end of the cleaning solenoid valve and the control end of the recovery solenoid valve are respectively electrically connected to the corresponding control ends of the controller.

[0010] Preferably, the adjustment end plate is arranged along the width direction of the top plate, and a scale is provided on the outer side of the adjustment end plate, and pointers are provided on the side surfaces of both ends of the nozzle docking interface fixing plate to indicate the scale of the negative pressure nozzle connecting device on the scale.

[0011] Preferably, a row of adjusting circular holes is provided on the adjusting end plate, and positioning waist holes are provided at both ends of the nozzle docking interface fixing plate. The two ends of the nozzle docking interface fixing plate are placed on the two adjusting end plates and fastened by corresponding pins.

[0012] Preferably, the adjusting end plate is provided with an elongated waist hole, and the suction nozzle interface fixing plate can be slidably inserted into the elongated waist hole directly through a slider or other similar components at the bottom, thereby realizing a sliding connection between the suction nozzle interface fixing plate and the adjusting end plate.

[0013] Preferably, the cleaning box is fixedly mounted on the end of the base plate, and a liquid level regulating port, a liquid injection and discharge port, a reflux port, a cleaning liquid outlet and a liquid level gauge are provided on the box wall of the cleaning box, wherein the cleaning liquid outlet is connected to the cleaning liquid through-hole pipeline of the connecting block, and the reflux port is connected to the liquid outlet pipeline of the recovery pump; the liquid level regulating port is arranged at the upper part of the cleaning box, and the outer end of the liquid level regulating port is equipped with a manual ball valve, the liquid injection and discharge port is arranged at the bottom of the cleaning box, and the outer end of the liquid injection and discharge port is equipped with a liquid injection and discharge port ball valve; the liquid level gauge is arranged on the outer box wall of the cleaning box, and the detection cavity of the liquid level gauge is communicated with the inner cavity of the cleaning box for detecting the liquid level height in the cleaning box.

[0014] Preferably, each set of the negative pressure nozzle connecting device corresponds to a set of the connecting blocks, and the connecting blocks are arranged on the inner walls of the two opposite side plates.

[0015] Preferably, a filter device is provided inside the cleaning box, the filter device is installed on the inner wall of the cleaning box, and the liquid inlet of the filter device is connected to the liquid outlet of the recovery pump for re-filtering the cleaning liquid pumped back by the recovery pump.

[0016] The working principle of the specific implementation of the present invention is as follows: the stacker delivers the cleaning tooling into the equipment storage position, presses the negative pressure nozzle and the nozzle interface of the cleaning device together; opens the cleaning solenoid valve, opens the equipment negative pressure and the cleaning pump, and the cleaning liquid in the cleaning box enters the connecting block under the action of the equipment negative pressure, and then disperses to each nozzle interface, and then enters the negative pressure system pipeline from each negative pressure nozzle. After the cleaning liquid fills the negative pressure pipeline, close the cleaning solenoid valve, close the equipment negative pressure, and maintain this state so that the cleaning liquid can fully dissolve the crystals in the pipeline. Finally, open the recovery pump and the recovery solenoid valve, and recover the electrolyte in the pipeline to the cleaning box through the filter, and the cleaning is completed.

[0017] The beneficial effect of the present invention is that it can effectively clean the entire negative pressure pipeline from the negative pressure nozzle to the gas-liquid separator. The cleaning liquid is integrated in the cleaning box, placed in the equipment storage position, and can be operated by a stacker, saving operation time and manpower and material resources. The cleaning liquid can also be recycled, and multiple devices can be cleaned by adding the cleaning liquid once. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2 It is an internal top view of the present invention. DETAILED DESCRIPTION

[0020] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] The present invention will be described in detail below in conjunction with exemplary embodiments with reference to the accompanying drawings.

[0023] The cleaning device for the negative pressure pipeline of lithium battery formation includes:

[0024] The support adjustment device 1 comprises a rectangular box surrounded by a bottom plate 11, a side plate 12 and a top plate 13, and an adjustment component arranged on the top plate, wherein the top plate 13 is provided with a plurality of adjustment waist holes 131, wherein the adjustment waist holes 131 are arranged in two parallel rows along the length direction of the top plate 13 and in a row along the width direction of the top plate 13; the adjustment component comprises an adjustment end plate 14 and a positioning bar 15, wherein the adjustment end plate 14 is respectively fixedly arranged at two short sides of the top plate 13; and the positioning bar 15 has three pieces in total, which are arranged on the top plate 13 in parallel with each other and at equal intervals, and are parallel to the adjustment end plate;

[0025] The converging and connecting device 2 is arranged in the rectangular box of the supporting and adjusting component, and includes a cleaning box 21, a connecting block 22, a recovery pump 23, a cleaning pump 24 and a solenoid valve group 25. There are two cleaning boxes 21, which are symmetrically installed on both sides of the bottom plate 11; there are two connecting blocks 22, which are respectively arranged on the inner walls of the two opposite side plates. A passage is provided in the connecting block 22, and a row of connecting holes that can be connected to the passage are provided on the top of the connecting block 22. A cleaning liquid through hole for the cleaning liquid to enter and exit is provided on the side of the connecting block 22; the solenoid valve group 25 includes two groups of cleaning solenoid valves 251 and one group of recovery solenoid valves 252, the cleaning solenoid valve 251 is connected to the cleaning liquid through-hole pipeline of the connecting block 22; the liquid outlet of the recovery pump 23 is connected to the cleaning box 21, and the liquid inlet of the recovery pump 23 is connected to the connecting block 22 through the recovery solenoid valve 252, which is used to recycle the cleaning liquid in the negative pressure pipeline of the equipment to be cleaned into the cleaning box; the liquid inlet of the cleaning pump 24 is connected to the cleaning box, and the liquid outlet of the cleaning pump 24 is connected to the cleaning liquid through-hole pipeline of the connecting block 22 through the cleaning solenoid valve 251, which is used to introduce the cleaning liquid in the cleaning box into the negative pressure pipeline of the equipment to be cleaned;

[0026] The negative pressure nozzle connection device 3, a total of two sets, is installed parallel to each other on the top of the support adjustment component 1, including a nozzle docking interface fixing plate 31 and a nozzle docking interface 32, the nozzle docking interface fixing plate 31 is detachably arranged on the two adjustment end plates, and spans the entire row of adjustment waist holes 131; the nozzle docking interface fixing plate 31 is fixedly penetrated with a row of nozzle docking interfaces 32 for docking with the negative pressure nozzle of the negative pressure device, the nozzle docking interfaces 32 correspond to the negative pressure nozzles of the equipment to be cleaned one by one, and the top of the nozzle docking interface 32 is docked with the negative pressure nozzle of the equipment to be cleaned, and the bottom of the nozzle docking interface is connected to the connecting hole pipeline of the connecting block 22;

[0027] And the controller 4 is arranged in the rectangular box, and the control end of the recovery pump 23, the control end of the cleaning pump 24, the control end of the cleaning solenoid valve 251 and the control end of the recovery solenoid valve 252 are electrically connected to the corresponding control ends of the controller 4 respectively.

[0028] In one embodiment, the side panels include a front side panel 121, a rear side panel 122, a left side panel 123 and a right side panel 124 which are connected end to end in sequence, the front side panel 121 and the rear side panel 122 are parallel and opposite to each other, the left side panel 123 and the right side panel 124 are parallel and opposite to each other, and hollow holes are provided on the left side panel 123 and the right side panel 124.

[0029] In one embodiment, a row of adjusting circular holes 141 are provided on the adjusting end plate 14, and positioning waist holes are provided at both ends of the nozzle docking interface fixing plate 31. The two ends of the nozzle docking interface fixing plate 31 are placed on the two adjusting end plates 14 and fastened by corresponding pins.

[0030] In one embodiment, an elongated waist hole is provided on the adjusting end plate 14, and the suction nozzle interface fixing plate 31 can be slidably inserted into the elongated waist hole directly through a slider or other similar components at the bottom, thereby realizing a sliding connection between the suction nozzle interface fixing plate 31 and the adjusting end plate 14.

[0031] In one embodiment, the adjustment end plate 14 is arranged along the width direction of the top plate, and a scale 141 is provided on the outer side of the adjustment end plate 14, and pointers are provided on the sides of the two ends of the nozzle docking interface fixing plate to indicate the scale of the negative pressure nozzle connection device on the scale. In this way, the two nozzle docking interface fixing plates 31 can freely adjust the spacing between the two sets of negative pressure nozzle connection devices 3 according to the coordinates of the scale 141 corresponding to the pointer on the adjustment end plate 14 to meet the needs of different models of equipment.

[0032] In one embodiment, the cleaning box 21 is fixedly mounted at the end of the base plate 11, and a liquid level regulating port, a liquid injection and discharge port, a reflux port, a cleaning liquid outlet and a liquid level gauge 26 are provided on the box wall of the cleaning box 21, wherein the cleaning liquid outlet is connected to the cleaning liquid through-hole pipeline of the connecting block 22, and the reflux port is connected to the liquid outlet pipeline of the recovery pump 23; the liquid level regulating port is arranged at the upper part of the cleaning box 21, and the outer end of the liquid level regulating port is equipped with a manual ball valve 211, the liquid injection and discharge port is arranged at the bottom of the cleaning box 21, and the outer end of the liquid injection and discharge port is equipped with a liquid injection and discharge port ball valve 212; the liquid level gauge 2 is arranged on the outer box wall of the cleaning box 21, and the detection cavity of the liquid level gauge 26 is interconnected with the inner cavity of the cleaning box 21, so as to detect the liquid level height in the cleaning box.

[0033] In one embodiment, each set of the negative pressure nozzle connection device 3 corresponds to a set of the connecting block 22, and the connecting block 22 is arranged on the inner walls of the two opposite side plates.

[0034] In one embodiment, a filter device 27 is provided inside the cleaning box 21, and the filter device 27 is installed on the inner wall of the cleaning box 21, and the liquid inlet of the filter device 27 is connected to the liquid outlet of the recovery pump 23, so as to re-filter the cleaning liquid drawn back by the recovery pump.

[0035] In one embodiment, there are two cleaning pumps 24 installed in the middle of the bottom plate 11. The liquid inlet of the cleaning pump 24 is connected to the cleaning liquid outlet of the cleaning box 21 through a hose, and the liquid outlet is connected to the cleaning liquid through hole of the connecting block through a hose, and a cleaning solenoid valve 251 is provided on the hose near the connecting block end.

[0036] In one embodiment, the recovery pump 23 is installed in the middle of the base plate 11, the liquid outlet of the recovery pump 23 is connected to the reflux port of the cleaning box 21 through a hose, the liquid inlet of the recovery pump 23 is connected to the connecting block through a hose, and a recovery solenoid valve is provided on the hose near the end of the connecting block.

[0037] In one embodiment, the number of the cleaning solenoid valves 251 is four. The number of the recovery solenoid valves 252 is two. Every two cleaning solenoid valves 251 and one recovery solenoid valve 252 form a group, corresponding to a set of the connecting block. The two sets of the cleaning solenoid valves 251 can be connected to each other in series, the cleaning solenoid valves 251 are connected to the pipeline between the connecting block and the cleaning box, the recovery solenoid valve 252 is arranged on the pipeline between the recovery pump and the connecting block, and the cleaning solenoid valves 251 and the recovery solenoid valves 252 are independent of each other.

[0038] The working principle of the specific embodiment of the present invention is as follows: the stacker delivers the cleaning tooling into the equipment storage position, presses the negative pressure suction nozzle with the suction nozzle interface 32 of the cleaning device; opens the cleaning solenoid valve 251, opens the equipment negative pressure and the cleaning pump, and the cleaning liquid in the cleaning box 21 enters the connecting block 22 under the action of the equipment negative pressure, and then disperses to each suction nozzle interface 32, and then enters the negative pressure system pipeline from each negative pressure suction nozzle. After the cleaning liquid fills the negative pressure pipeline, close the cleaning solenoid valve 251, close the equipment negative pressure, and maintain this state so that the cleaning liquid can fully dissolve the crystals in the pipeline. Finally, open the recovery pump 23 and the recovery solenoid valve 252, and recover the electrolyte in the pipeline to the cleaning box through the filter, and the cleaning is completed.

[0039] The working principle of the specific embodiment of the present invention is as follows: the stacker delivers the cleaning tooling into the equipment storage position, presses the negative pressure suction nozzle with the suction nozzle interface of the cleaning device; opens the cleaning solenoid valve 240, opens the equipment negative pressure and the cleaning pump, and the cleaning liquid in the cleaning box 211 enters the connecting block 220 under the action of the equipment negative pressure, and then disperses to each suction nozzle interface 320, and then enters the negative pressure system pipeline from each negative pressure suction nozzle. After the cleaning liquid fills the negative pressure pipeline, close the cleaning solenoid valve 240, close the equipment negative pressure, and maintain this state so that the cleaning liquid can fully dissolve the crystals in the pipeline. Finally, open the recovery pump 230 and the recovery solenoid valve 250, and recover the electrolyte in the pipeline to the liquid storage box 211 through the filter 215, and the cleaning is completed.

[0040] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0045] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cleaning device suitable for lithium battery formation negative pressure pipeline, characterized in that: include: The support adjustment device comprises a rectangular box surrounded by a bottom plate, a side plate and a top plate, and an adjustment assembly arranged on the top plate, wherein the top plate is provided with a plurality of adjustment waist holes, and the adjustment waist holes are arranged in a plurality of parallel rows along the length direction of the top plate and in a row along the width direction of the top plate; the adjustment assembly comprises an adjustment end plate and a positioning strip, wherein the adjustment end plates are respectively fixedly arranged at the two short sides of the top plate, and the adjustment end plates are provided with a plurality of adjustment circular holes; the positioning strips are arranged on the top plate in parallel and at intervals, and are parallel to the adjustment end plates; The confluence and communication device is arranged in the rectangular box of the support and adjustment component, and includes a cleaning box, a connecting block, a recovery pump, a cleaning pump and a solenoid valve group, and the cleaning box is installed on the bottom plate; the connecting block has two blocks, which are respectively arranged on the inner walls of the two opposite side plates, and a passage is provided in the connecting block, and a row of connecting holes that can be connected to the passage is provided on the top of the connecting block, and a cleaning liquid through hole for the cleaning liquid to enter and exit is provided on the side of the connecting block; the solenoid valve group includes a cleaning solenoid valve and a recovery solenoid valve, and the cleaning solenoid valve is connected to the cleaning liquid through hole pipeline of the connecting block; the liquid outlet of the recovery pump is connected to the cleaning box, and the liquid inlet of the recovery pump is connected to the connecting block through the recovery solenoid valve, which is used to recycle the cleaning liquid in the negative pressure pipeline of the equipment to be cleaned into the cleaning box; the liquid inlet of the cleaning pump is connected to the cleaning box, and the liquid outlet of the cleaning pump is connected to the cleaning liquid through hole pipeline of the connecting block through the cleaning solenoid valve, which is used to introduce the cleaning liquid in the cleaning box into the negative pressure pipeline of the equipment to be cleaned; A negative pressure nozzle connecting device is installed on the top of the support adjustment component, including a nozzle docking interface fixing plate and a nozzle docking interface, wherein the nozzle docking interface fixing plate is detachably arranged on the two adjustment end plates and spans the entire row of adjustment waist holes; positioning waist holes are arranged at both ends of the nozzle docking interface fixing plate; a row of nozzle docking interfaces for docking with the negative pressure nozzle of the negative pressure device is fixedly penetrated on the nozzle docking interface fixing plate, the nozzle docking interfaces correspond to the negative pressure nozzles of the device to be cleaned one by one, and the top of the nozzle docking interface docks with the negative pressure nozzle of the device to be cleaned, and the bottom of the nozzle docking interface is connected with the connecting hole pipeline of the connecting block; and a controller, which is arranged in the rectangular box, and the control end of the recovery pump, the control end of the cleaning pump, the control end of the cleaning solenoid valve and the control end of the recovery solenoid valve are electrically connected to the corresponding control ends of the controller respectively; The cleaning box is fixedly arranged at the end of the bottom plate, and a liquid level regulating port, a liquid injection and discharge port, a reflux port, a cleaning liquid outlet and a liquid level gauge are arranged on the box wall of the cleaning box, wherein the cleaning liquid outlet is connected with the cleaning liquid through-hole pipeline of the connecting block, and the reflux port is connected with the liquid outlet pipeline of the recovery pump; the liquid level regulating port is arranged at the upper part of the cleaning box, and the outer end of the liquid level regulating port is equipped with a manual ball valve, the liquid injection and discharge port is arranged at the bottom of the cleaning box, and the outer end of the liquid injection and discharge port is equipped with a liquid injection and discharge port ball valve; the liquid level gauge is arranged on the outer box wall of the cleaning box, and the detection cavity of the liquid level gauge is interconnected with the inner cavity of the cleaning box, which is used to detect the liquid level height in the cleaning box.

2. The cleaning device for negative pressure pipeline of lithium battery formation as claimed in claim 1, characterized in that: Each set of the negative pressure nozzle connection device corresponds to a set of the connecting blocks, and the connecting blocks are arranged on the inner walls of the two opposite side plates.

3. The cleaning device for negative pressure pipeline of lithium battery formation as claimed in claim 2, characterized in that: A filter device is provided inside the cleaning box. The filter device is installed on the inner wall of the cleaning box, and the liquid inlet of the filter device is connected to the liquid outlet of the recovery pump for re-filtering the cleaning liquid pumped back by the recovery pump.

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