Vacuum Liquid Injection Sealing Machine

Abstract

The present invention provides a vacuum liquid injection and sealing machine, comprising: a housing; a first processing module for processing soft-pack batteries, including a first sub-housing, a first liquid injection unit, and a first sealing unit. The first sub-housing cooperates with the housing to form a first working chamber. The first liquid injection unit includes a first liquid injection needle, a first connecting portion, and a liquid injection lifting cylinder. At least a part of the first liquid injection needle is disposed in the first working chamber. The first sealing unit includes a first sealing head and a second sealing head. The first sealing head and the second sealing head are disposed in the first working chamber, and the first sealing head and the second sealing head are adapted to be opened and closed; a second processing module for processing cylindrical batteries, including a second sealing unit and a second liquid injection unit. The second sealing unit includes a supporting portion and a covering portion. The supporting portion is used for disposing the cylindrical battery, and the supporting portion and the covering portion are adapted to be opened and closed to form a second working chamber. The second liquid injection unit includes a second liquid injection needle, and at least a part of the second liquid injection needle is disposed in the second working chamber.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a vacuum liquid injection and sealing machine. Background Art

[0002] Most of the existing liquid injection machines inject liquid under normal pressure, and the static infiltration time of the electrolyte is too long, resulting in low efficiency in manufacturing batteries. Further, if it is necessary to complete the processes of liquid injection, vacuum static placement, and vacuum hot pressing pre-sealing for soft-pack batteries and the processes of liquid injection, vacuum static placement, and pressure infiltration for cylindrical batteries, at least four devices (liquid injection machine, vacuum static placement machine, vacuum hot pressing pre-sealing machine, pressure infiltration machine) are required, making the processing operation cumbersome and the cost too high; moreover, multiple different processing devices will occupy too much space inside the glove box. Furthermore, the existing liquid injection machines also have the problem of poor liquid injection accuracy due to excessive residual electrolyte in the liquid injection pipe and the buffer tank.

[0003] How to solve the above problems is what those skilled in the art need to consider. Summary of the Invention

[0004] In view of the above situation, it is necessary to provide a vacuum liquid injection and sealing machine to solve the above problems.

[0005] A vacuum liquid injection and sealing machine includes:

[0006] A housing;

[0007] A first processing module for processing soft-pack batteries, the first processing module including a first sub-housing, a first liquid injection unit, and a first sealing unit. The first sub-housing and the housing cooperate to form a first working chamber for accommodating the soft-pack battery. The first liquid injection unit includes a first liquid injection needle, a first connection part, and a liquid injection lifting cylinder. The liquid injection lifting cylinder and the first connection part are arranged outside the first working chamber, at least part of the first liquid injection needle is arranged inside the first working chamber, the first connection part is respectively connected to the liquid injection lifting cylinder and the first liquid injection needle, and the liquid injection lifting cylinder drives the first liquid injection needle to move. The first sealing unit includes a first sealing head and a second sealing head, the first sealing head and the second sealing head are arranged inside the first working chamber, and the first sealing head and the second sealing head are adapted to be opened and closed; and

[0008] The second processing module is used to process cylindrical batteries. The second processing module includes a second sealing unit and a second liquid injection unit. The second sealing unit includes a supporting part and a cover part. The supporting part is used to place the cylindrical battery. The supporting part and the cover part are adaptably and openably matched to form a second working cavity, which is used to accommodate the cylindrical battery. The second liquid injection unit includes a second liquid injection needle, and at least part of the second liquid injection needle is arranged in the second working cavity.

[0009] In a possible implementation manner, the housing includes a bottom plate and a side plate. The side plate includes a first side plate. The first sub-housing and the bottom plate and the first side plate enclose to form the first working cavity. An opening is formed on one side of the first sub-housing away from the bottom plate. At least part of the first liquid injection needle passes through the opening and extends into the first working cavity. The liquid injection lifting cylinder is fixed to the housing.

[0010] In a possible implementation manner, the first sealing unit further includes a fixing part, a first connecting rod, a first sealing cylinder and a second sealing cylinder. The first sealing cylinder is drivingly connected to the first sealing head. The second sealing cylinder is drivingly connected to the second sealing head. The first sealing cylinder and the second sealing cylinder are respectively fixedly connected to the housing. The fixing part is fixed to the first sub-housing. The first connecting rod is fixed to the fixing part. The first sealing head and the second sealing head are movably connected to the first connecting rod.

[0011] In a possible implementation manner, the first processing module further includes a limiting unit. The limiting unit is arranged in the first working cavity. The limiting unit includes a first lifting platform, a first clamp, a second clamp, a second connecting rod, a first limiting plate and a second limiting plate. The second connecting rod is fixedly connected to the bottom plate. The first lifting is movably connected to the second connecting rod. The first lifting platform is close to the bottom plate. The first clamp and the second clamp are arranged on one side of the first lifting platform away from the bottom plate. The first clamp and the second clamp are arranged at intervals. The first clamp and the second clamp cooperate to clamp the soft-pack battery. The first limiting plate and the second limiting plate are arranged at the end of the second connecting rod away from the bottom plate.

[0012] In a possible implementation manner, the first sealing head and the second sealing head are arranged on one side of the first limiting plate and the second limiting plate away from the bottom plate. The limiting unit further includes a first liquid receiving tray, and the first liquid receiving tray is arranged on one side of the first lifting platform away from the bottom plate.

[0013] In a possible implementation, the first sub-shell includes a first main body, a first window, and a first flip cover. The first window is opened on the first main body and is used to observe the interior of the first working chamber. The first main body is provided with a second opening, and the first flip cover is movably connected to the first main body and can open and close to cover the second opening.

[0014] In a possible implementation, the second processing module further includes a second lifting platform. The second lifting platform includes a lifting cylinder, a limiting part, a second connecting part, a third connecting part, a support plate, and a third connecting rod. The third connecting rod is fixed to the bottom plate, and the third connecting rod is fixed to the bottom plate. The second connecting part is connected to the third connecting rod, the support plate is connected to the second connecting part, the supporting part is arranged on the side of the support plate away from the bottom plate, the lifting cylinder is arranged at one end of the third connecting rod away from the second connecting part, the third connecting part is arranged at one end of the third connecting rod away from the second connecting part, the sealing cover part is connected to the third connecting part, and the limiting part is arranged at one end of the third connecting rod away from the second connecting part and faces the second connecting part.

[0015] In a possible implementation, the second processing module further includes a second liquid receiving tray and a second sub-shell. The second liquid receiving tray is arranged on the side of the bottom plate close to the supporting part and on the side of the supporting part away from the sealing cover part. The second sub-shell is connected to the third connecting part, the side plate, and the bottom plate, and the second sub-shell includes a second main body and a second flip cover.

[0016] In a possible implementation, a buffer tank is further included. The buffer tank includes an outer wall, an inner tank, an upper cover, a liquid level sensor, a pouring needle, and a breathing valve. The inner tank is nested inside the outer wall, the upper cover is connected to the outer wall and the inner tank, and the upper cover and the inner tank enclose a liquid storage cavity. The liquid level sensor, the pouring needle, and the breathing valve are arranged on the upper cover and communicate with the liquid storage cavity.

[0017] In a possible implementation, a liquid injection pump and a peristaltic pump are further included. The liquid injection pump includes a first liquid delivery end. The buffer tank includes a second liquid delivery end and a third liquid delivery end. The second liquid delivery end is connected to the liquid level sensor, and the liquid level sensor controls the opening or closing of the second liquid delivery end. The third liquid delivery end is opened on the side of the inner tank away from the upper cover. The first liquid delivery end is communicated with the second liquid delivery end, and the second liquid delivery end and the third liquid delivery end are communicated with the liquid storage cavity. The peristaltic pump includes a fourth liquid delivery end and a fifth liquid delivery end. The fourth liquid delivery end is communicated with the fifth liquid delivery end. The third liquid delivery end is communicated with the fourth liquid delivery end, and the fifth liquid delivery end is detachably communicated with the first liquid injection needle or the second liquid injection needle.

[0018] The above-mentioned vacuum liquid injection and sealing machine has a compact structure, a small size, and strong functionality. Through one vacuum liquid injection and sealing machine, the processes of liquid injection, vacuum static placement, and vacuum hot pressing pre-sealing for soft-packaged batteries, as well as the processes of liquid injection, vacuum static placement, and pressurized infiltration for cylindrical batteries, can be realized, effectively improving the working efficiency. Description of the Drawings

[0019] Figure 1 It is a perspective three-dimensional schematic diagram of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0020] Figure 2 It is a perspective three-dimensional schematic diagram of another perspective of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0021] Figure 3 It is a front view schematic diagram of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0022] Figure 4 It is a side view schematic diagram of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0023] Figure 5 It is a structural schematic diagram of a first liquid injection unit of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0024] Figure 6 It is a structural schematic diagram of a first sealing unit of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0025] Figure 7 It is a structural schematic diagram of a first limiting unit of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0026] Figure 8 It is a perspective three-dimensional schematic diagram of another perspective of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0027] Figure 9 It is a structural schematic diagram of a second lifting unit of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0028] Figure 10 It is a structural schematic diagram of a buffer tank of a vacuum liquid injection and sealing machine according to an embodiment of the present invention.

[0029] Description of the Main Component Symbols

[0030] Vacuum liquid injection and sealing machine 1

[0031] Housing 10

[0032] Side plate 100

[0033] First side plate 101

[0034] First working hole 1011

[0035] Second side plate 102

[0036] Third side plate 103

[0037] Fourth side plate 104

[0038] Fifth side plate 105

[0039] Bottom plate 106

[0040] First processing module 11

[0041] First sub-shell 111

[0042] First working cavity 110

[0043] First main body 1111

[0044] First viewing window 1112

[0045] First flip cover 1113

[0046] First opening 1118

[0047] Second opening 1119

[0048] First liquid injection unit 112

[0049] First liquid injection needle 1121

[0050] First connecting part 1122

[0051] Liquid injection lifting cylinder 1123

[0052] First sealing unit 113

[0053] First sealing head 1131

[0054] Second sealing head 1132

[0055] Fixing part 1133

[0056] First connecting rod 1134

[0057] First sealing cylinder 1135

[0058] Second sealing cylinder 1136

[0059] Limiting unit 114

[0060] First lifting platform 1140

[0061] First fixture 1141

[0062] Second fixture 1142

[0063] Second connecting rod 1143

[0064] First limiting plate 1144

[0065] Second limiting plate 1145

[0066] First liquid receiving tray 1146

[0067] Second processing module 12

[0068] Second working cavity 120

[0069] Second sealing unit 121

[0070] Supporting part 1211

[0071] Covering part 1212

[0072] Second liquid injection unit 122

[0073] Second liquid injection needle 1221

[0074] Second lifting platform 123

[0075] Lifting cylinder 1231

[0076] Second connecting part 1232

[0077] Third connecting part 1233

[0078] Supporting plate 1234

[0079] Third connecting rod 1235

[0080] Limiting part 1236

[0081] Second liquid receiving tray 124

[0082] Second sub-shell 129

[0083] Second main body 1291

[0084] Second viewing window 1292

[0085] Second flip cover 1293

[0086] Third opening 1299

[0087] Buffer tank 13

[0088] Liquid storage cavity 130

[0089] Outer wall 131

[0090] Inner liner 132

[0091] Upper cover 133

[0092] Liquid level sensor 134

[0093] Pouring needle 135

[0094] Breather valve 136

[0095] Liquid injection pump 14

[0096] Peristaltic pump 15

[0097] Control module 16

[0098] Power interface 17

[0099] Gas source interface 18

[0100] Switch 19

[0101] First infusion end 1001

[0102] Second infusion end 1002

[0103] Third infusion end 1003

[0104] Fourth infusion end 1004

[0105] Fifth infusion end 1005

[0106] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific embodiments

[0107] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0108] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be intermediate elements present at the same time.

[0109] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0110] As Figures 1 to 10 shown, a vacuum liquid injection and sealing machine 1 provided by the present invention is provided. The vacuum liquid injection and sealing machine 1 may include a housing 10, a first processing module 11, a second processing module 12, a buffer tank 13, a liquid injection pump 14, a peristaltic pump 15, a control module 16, a power supply interface 17, a gas source interface 18, and a switch 19. The first processing module 11 and the second processing module 12 are arranged at intervals. The first processing module 11, the second processing module 12, the buffer tank 13, the liquid injection pump 14, the peristaltic pump 15, the control module 16, the power supply interface 17, the gas source interface 18, and the switch 19 are connected to the housing 10.

[0111] The housing 10 includes a bottom plate 106 and side plates 100. The side plates 100 include a first side plate 101, a second side plate 102, a third side plate 103, a fourth side plate 104, and a fifth side plate 105. The first side plate 101, the second side plate 102, the third side plate 103, and the fourth side plate 104 are respectively connected to the bottom plate 106. The first side plate 101, the second side plate 102, the third side plate 103, and the fourth side plate 104 are sequentially connected in sequence. The fifth side plate 105 is connected to the first side plate 101, the second side plate 102, the third side plate 103, and the fourth side plate 104.

[0112] The first processing module 11 is used for processing soft-pack batteries. The first processing module 11 includes a first sub-shell 111, a first liquid injection unit 112, a first sealing unit 113, and a limiting unit 114.

[0113] The first sub-shell 111 and the housing 10 cooperate to form a first working chamber 110, and the first working chamber 110 is used for accommodating soft-pack batteries. The first sub-shell 111 includes a first main body 1111, a first viewing window 1112, and a first flip cover 1113. The first viewing window 1112 is opened on the first main body 1111. The first viewing window 1112 is a transparent part, and the first viewing window 1112 is used for observing the inside of the first working chamber 110. The first main body 1111 is provided with a second opening 1119. The first flip cover 1113 is movably connected to the first main body 1111, and the first flip cover 1113 can open and close to cover the second opening 1119. In one embodiment, the first sub-shell 111 and the bottom plate 106 and the first side plate 101 enclose the first working chamber 110.

[0114] As Figure 1 and Figure 5As shown, the first liquid injection unit 112 includes a first liquid injection needle 1121, a first connection part 1122, and a liquid injection lifting cylinder 1123. The liquid injection lifting cylinder 1123 and the first connection part 1122 are arranged outside the first working chamber 110, and at least part of the first liquid injection needle 1121 is arranged inside the first working chamber 110. The first connection part 1122 is respectively connected to the liquid injection lifting cylinder 1123 and the first liquid injection needle 1121, and the liquid injection lifting cylinder 1123 drives the first liquid injection needle 1121 to move.

[0115] In one embodiment, the liquid injection lifting cylinder 1123 and the first connection part 1122 are arranged in the accommodation space formed by enclosing the bottom plate 106 and the side plate 100. A first working hole 1011 is formed on the first side plate 101, and at least part of the first connection part 1122 extends through the first working hole 1011 and drives the first liquid injection needle 1121.

[0116] In one embodiment, a first opening 1118 is formed on one side of the first sub-shell 111 away from the bottom plate 106. At least part of the first liquid injection needle 1121 passes through the first opening 1118 and extends into the first working chamber 110, and the liquid injection lifting cylinder 1123 is fixed to the housing 10.

[0117] As Figure 4 and Figure 6 shown, the first sealing unit 113 includes a first sealing head 1131, a second sealing head 1132, a fixing part 1133, a first connecting rod 1134, a first sealing cylinder 1135, and a second sealing cylinder 1136. The first sealing head 1131 and the second sealing head 1132 are arranged inside the first working chamber 110. The first sealing head 1131 and the second sealing head 1132 are adapted to be opened and closed for sealing the soft-pack battery. The first sealing cylinder 1135 is drivingly connected to the first sealing head 1131, and the second sealing cylinder 1136 is drivingly connected to the second sealing head 1132. The first sealing cylinder 1135 and the second sealing cylinder 1136 are respectively fixedly connected to the housing 10. The fixing part 1133 is fixed to the first sub-shell 111, the first connecting rod 1134 is fixed to the fixing part 1133, and the first sealing head 1131 and the second sealing head 1132 are movably connected to the first connecting rod 1134.

[0118] As Figure 4 and Figure 7As shown, the limiting unit 114 is disposed in the first working chamber 110. The limiting unit 114 includes a first lifting platform 1140, a first fixture 1141, a second fixture 1142, a second connecting rod 1143, a first limiting plate 1144, and a second limiting plate 1145. The second connecting rod 1143 is fixedly connected to the bottom plate 106. The first lifting platform 1140 is movably connected to the second connecting rod 1143, and the first lifting platform 1140 is close to the bottom plate 106. The first fixture 1141 and the second fixture 1142 are disposed on a side of the first lifting platform 1140 away from the bottom plate 106. The first fixture 1141 and the second fixture 1142 are spaced apart, and the first fixture 1141 and the second fixture 1142 cooperate to clamp the soft-pack battery. The first limiting plate 1144 and the second limiting plate 1145 are disposed at an end of the second connecting rod 1143 away from the bottom plate 106.

[0119] In one embodiment, the first fixture 1141 and the second fixture 1142 can be spring fixtures, and the first fixture 1141 and the second fixture 1142 can be symmetrically disposed to quickly clamp the soft-pack battery.

[0120] In one embodiment, the first limiting plate 1144 and the second limiting plate 1145 are spaced apart, and the thickness of the soft-pack battery can be adjusted by adjusting the distance between the first limiting plate 1144 and the second limiting plate 1145, and the soft-pack battery can be kept in an upright state.

[0121] In one embodiment, the limiting unit 114 further includes a first liquid receiving tray 1146. The first liquid receiving tray 1146 is disposed on a side of the first lifting platform 1140 away from the bottom plate 106, and the first liquid receiving tray 1146 can be used to receive the leaked electrolyte.

[0122] In one embodiment, the first sealing head 1131 and the second sealing head 1132 are disposed on a side of the first limiting plate 1144 and the second limiting plate 1145 away from the bottom plate 106.

[0123] As Figure 3 、 Figure 8 and Figure 9 shown, the second processing module 12 is used to process cylindrical batteries. The second processing module 12 includes a second sealing unit 121, a second liquid injection unit 122, a second lifting platform 123, and a second sub-shell 129.

[0124] As Figure 8 shown, the second sealing unit 121 includes a supporting portion 1211 and a covering portion 1212. The supporting portion 1211 is used to place the cylindrical battery. The supporting portion 1211 and the covering portion 1212 are adaptively openable and closable to form a second working chamber 120, and the second working chamber 120 is used to accommodate the cylindrical battery.

[0125] As Figure 9As shown, the second liquid injection unit 122 includes a second liquid injection needle 1221, and at least a part of the second liquid injection needle 1221 is disposed within the second working chamber 120.

[0126] In one embodiment, the gas-liquid pipeline of the second liquid injection needle 1221 can be communicated with a vacuum pumping unit (not shown in the figure) or a precision pressure regulating unit (not shown in the figure), and the inside of the second working chamber 120 can be evacuated or filled with inert gas for pressurization.

[0127] The second lifting platform 123 includes a lifting cylinder 1231, a second connecting portion 1232, a third connecting portion 1233, a limiting portion 1236, a tray 1234, and a third connecting rod 1235. The third connecting rod 1235 is fixed to the bottom plate 106, the second connecting portion 1232 is connected to the third connecting rod 1235, and the tray 1234 is connected to the second connecting portion 1232. The supporting portion 1211 is disposed on the side of the tray 1234 away from the bottom plate 106, the lifting cylinder 1231 is disposed at one end of the third connecting rod 1235 away from the second connecting portion 1232, the third connecting portion 1233 is disposed at one end of the third connecting rod 1235 away from the second connecting portion 1232, and the covering portion 1212 is connected to the third connecting portion 1233. The limiting portion 1236 is disposed at one end of the third connecting rod 1235 away from the second connecting portion 1232 and faces the second connecting portion 1232.

[0128] In one embodiment, the second processing module 12 further includes a second liquid receiving tray 124 and a second sub-shell 129. The second liquid receiving tray 124 is disposed on the side of the bottom plate 106 close to the supporting portion 1211, the second liquid receiving tray 124 is disposed on the side of the supporting portion 1211 away from the covering portion 1212, the second sub-shell 129 is connected to the third connecting portion 1233, the side plate 100, and the bottom plate 106, and the second liquid receiving tray 124 can be used to receive the leaked electrolyte.

[0129] As Figure 3 shown, in one embodiment, the second sub-shell 129 includes a second main body 1291, a second viewing window 1292, and a second flip cover 1293. The second viewing window 1292 is opened on the second main body 1291. The second main body 1291 is provided with a third opening 1299, the second flip cover 1293 is movably connected to the second main body 1291, and the second flip cover 1293 can open and close to cover the third opening 1299.

[0130] As Figure 10As shown, the buffer tank 13 includes an outer wall 131, an inner tank 132, an upper cover 133, a liquid level sensor 134, a liquid pouring needle 135, and a breathing valve 136. The inner tank 132 is nested inside the outer wall 131. The upper cover 133 is connected to the outer wall 131 and the inner tank 132. The upper cover 133 and the inner tank 132 enclose a liquid storage cavity 130. The liquid level sensor 134, the liquid pouring needle 135, and the breathing valve 136 are arranged on the upper cover 133 and communicate with the liquid storage cavity 130.

[0131] In one embodiment, the outer wall 131 can be made of metal material, and the inner tank 132 can be made of polytetrafluoroethylene (PTFE) material. The outer wall 131 and the inner tank 132 can be in a conical structure, which can control the liquid residue in the buffer tank 13 during liquid drainage to the greatest extent. The liquid pouring needle 135 can extend into the bottom of the liquid storage cavity 130 to avoid liquid splashing when the liquid injection pump 14 injects electrolyte into the buffer tank 13. The liquid level sensor 134 can monitor the liquid level inside the liquid storage cavity 130 to keep the liquid level of the electrolyte at a reasonable height; the breathing valve 136 can enable the inside of the liquid storage cavity 130 to communicate with the outside in terms of pressure to keep the pressure inside the liquid storage cavity 130 consistent with the outside.

[0132] The liquid injection pump 14 includes a first liquid delivery end 1001. The buffer tank 13 includes a second liquid delivery end 1002 and a third liquid delivery end 1003. The peristaltic pump 15 includes a fourth liquid delivery end 1004 and a fifth liquid delivery end 1005. The second liquid delivery end 1002 is connected to the liquid level sensor 134, and the liquid level sensor 134 controls the opening or closing of the second liquid delivery end 1002. The third liquid delivery end 1003 is opened on the side of the inner tank 132 away from the upper cover 133. The first liquid delivery end 1001 communicates with the second liquid delivery end 1002. The second liquid delivery end 1002 and the third liquid delivery end 1003 communicate with the liquid storage cavity 130. The fourth liquid delivery end 1004 communicates with the fifth liquid delivery end 1005. The third liquid delivery end 1003 communicates with the fourth liquid delivery end 1004. The fifth liquid delivery end 1005 is detachably connected to the first liquid injection needle 1121 or the second liquid injection needle 1221.

[0133] The first liquid delivery end 1001 and the second liquid delivery end 1002, and the third liquid delivery end 1003 and the fourth liquid delivery end 1004 can be connected through a hose (not shown in the figure). The material of the hose can be polytetrafluoroethylene (PTFE) material. The hose from the first liquid delivery end 1001 to the second liquid delivery end 1002 and the hose from the third liquid delivery end 1003 to the fourth liquid delivery end 1004 can be bent downward.

[0134] In one embodiment, the vacuum liquid injection and sealing machine 1 is electrically connected to the outside through the power interface 17 to obtain power. The vacuum liquid injection and sealing machine 1 is connected to an external air source through the air source interface 18 to obtain the air source for driving the cylinder. The control module 16 can adjust the function parameters of the vacuum liquid injection and sealing machine 1 and control the operation of the vacuum liquid injection and sealing machine 1. The switch 19 can control the vacuum liquid injection and sealing machine 1 to be turned on or off.

[0135] In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included in the scope protected by the present invention.

Claims

1. A vacuum liquid injection and sealing machine, characterized in that, Comprising: A housing; A first processing module for processing a soft-pack battery. The first processing module includes a first sub-housing, a first liquid injection unit, and a first sealing unit. The first sub-housing cooperates with the housing to form a first working chamber for accommodating the soft-pack battery. The first liquid injection unit includes a first liquid injection needle, a first connecting portion, and a liquid injection lifting cylinder. The liquid injection lifting cylinder and the first connecting portion are disposed outside the first working chamber, at least a part of the first liquid injection needle is disposed inside the first working chamber, the first connecting portion is respectively connected to the liquid injection lifting cylinder and the first liquid injection needle, and the liquid injection lifting cylinder drives the first liquid injection needle to move. The first sealing unit includes a first sealing head and a second sealing head, the first sealing head and the second sealing head are disposed inside the first working chamber, and the first sealing head and the second sealing head are openable and closable and adapted to seal the soft-pack battery; And A second processing module for processing a cylindrical battery. The second processing module includes a second sealing unit and a second liquid injection unit. The second sealing unit includes a supporting portion and a covering portion. The supporting portion is for disposing the cylindrical battery, and the supporting portion and the covering portion are openable and closable and adapted to form a second working chamber for accommodating the cylindrical battery. The second liquid injection unit includes a second liquid injection needle, and at least a part of the second liquid injection needle is disposed inside the second working chamber; The first processing module and the second processing module are spaced apart and respectively connected to the housing.

2. The vacuum liquid injection and sealing machine according to claim 1, characterized in that The housing includes a bottom plate and side plates. The side plates include a first side plate. The first sub-housing, the bottom plate, and the first side plate enclose the first working chamber. A first opening is provided on a side of the first sub-housing away from the bottom plate. At least a part of the first liquid injection needle passes through the first opening and extends into the first working chamber. The liquid injection lifting cylinder is fixed to the housing and disposed in the accommodation space formed by the bottom plate and the side plates.

3. The vacuum liquid injection and sealing machine according to claim 1, wherein, The first sealing unit further includes a fixing portion, a first connecting rod, a first sealing cylinder, and a second sealing cylinder. The first sealing cylinder is drivingly connected to the first sealing head, the second sealing cylinder is drivingly connected to the second sealing head, the first sealing cylinder and the second sealing cylinder are respectively fixed to the housing, the fixing portion is fixed to the first sub-housing, the first connecting rod is fixed to the fixing portion, and the first sealing head and the second sealing head are movably connected to the first connecting rod.

4. The vacuum liquid injection and sealing machine according to claim 2, wherein The first processing module further includes a limiting unit disposed in the first working chamber. The limiting unit includes a first lifting platform, a first fixture, a second fixture, a second connecting rod, a first limiting plate, and a second limiting plate. The second connecting rod is fixedly connected to the bottom plate, and the first lifting platform is movably connected to the second connecting rod. The first lifting platform is close to the bottom plate. The first fixture and the second fixture are disposed on a side of the first lifting platform away from the bottom plate. The first fixture and the second fixture are spaced apart. The first fixture and the second fixture cooperate to clamp the soft-pack battery. The first limiting plate and the second limiting plate are disposed at an end of the second connecting rod away from the bottom plate.

5. The vacuum liquid injection and sealing machine according to claim 4, wherein The first head and the second head are disposed on a side of the first limiting plate and the second limiting plate away from the bottom plate. The limiting unit further includes a first liquid receiving tray disposed on a side of the first lifting platform away from the bottom plate.

6. The vacuum liquid injection and sealing machine according to claim 1, characterized in that, The first sub-shell includes a first main body, a first viewing window, and a first flip cover. The first viewing window is formed in the first main body and is used to observe the interior of the first working chamber. The first main body is provided with a second opening. The first flip cover is movably connected to the first main body and can open and close to cover the second opening.

7. The vacuum liquid injection and sealing machine according to claim 2, characterized in that, The second processing module further includes a second lifting platform, which includes a lifting cylinder, a limiting portion, a second connecting portion, a third connecting portion, a support plate, and a third connecting rod. The third connecting rod is fixed to the bottom plate. The second connecting portion is connected to the third connecting rod. The support plate is connected to the second connecting portion. The supporting portion is disposed on a side of the support plate away from the bottom plate. The lifting cylinder is disposed at an end of the third connecting rod away from the second connecting portion. The third connecting portion is disposed at an end of the third connecting rod away from the second connecting portion. The covering portion is connected to the third connecting portion. The limiting portion is disposed at an end of the third connecting rod away from the second connecting portion and faces the second connecting portion.

8. The vacuum liquid injection and sealing machine according to claim 7, characterized in that, The second processing module further includes a second liquid receiving tray and a second sub-shell. The second liquid receiving tray is disposed on a side of the bottom plate close to the supporting portion and on a side of the supporting portion away from the covering portion. The second sub-shell is connected to the third connecting portion, the side plate, and the bottom plate. The second sub-shell includes a second main body and a second flip cover.

9. The vacuum liquid injection and sealing machine according to claim 1, characterized in that, It further includes a buffer tank, which includes an outer wall, an inner tank, an upper cover, a liquid level sensor, a pouring needle, and a breathing valve. The inner tank is nested inside the outer wall. The upper cover is connected to the outer wall and the inner tank. The upper cover and the inner tank enclose a liquid storage chamber. The liquid level sensor, the pouring needle, and the breathing valve are disposed on the upper cover and communicate with the liquid storage chamber.

10. The vacuum liquid injection and sealing machine according to claim 9, wherein, It further includes a liquid injection pump and a peristaltic pump. The liquid injection pump includes a first liquid infusion end. The buffer tank includes a second liquid infusion end and a third liquid infusion end. The second liquid infusion end is connected to the liquid level sensor, and the liquid level sensor controls the opening or closing of the second liquid infusion end. The third liquid infusion end is provided on the side of the inner tank away from the upper cover. The first liquid infusion end is communicated with the second liquid infusion end. The second liquid infusion end and the third liquid infusion end are communicated with the liquid storage cavity. The peristaltic pump includes a fourth liquid infusion end and a fifth liquid infusion end. The fourth liquid infusion end is communicated with the fifth liquid infusion end. The third liquid infusion end is communicated with the fourth liquid infusion end. The fifth liquid infusion end is detachably communicated with the first liquid injection needle or the second liquid injection needle.

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