Liquid injection mechanism

Abstract

The utility model discloses a liquid injection mechanism which comprises a liquid injection assembly, the liquid injection assembly comprises a first liquid injection plate, a liquid injection cup and a liquid injection lifting driving part, the liquid injection cup is arranged at the top end of the first liquid injection plate, and the bottom end of the liquid injection cup penetrates through a first through hole of the first liquid injection plate and is provided with a liquid injection nozzle; the liquid injection cup is internally provided with a liquid injection cavity, a liquid passing channel and a liquid outlet channel which are sequentially communicated from top to bottom, the liquid outlet channel extends to the bottom end of the liquid injection cup and is communicated with the liquid injection nozzle, the top end of the liquid injection cup is provided with a liquid injection connector, the liquid injection connector is communicated with the liquid injection cavity, and the liquid injection cavity is communicated with the liquid passing channel. The liquid injection lifting driving part is used for driving the first liquid injection plate to move up and down, the cleaning assembly comprises a blocking rod and a cleaning module, and the cleaning module comprises a cleaning part, a cleaning lifting driving part and a cleaning translation driving part. According to the utility model, electrolyte can be prevented from remaining on the inner walls of the liquid injection cavity and the liquid passing channel.

Description

Technical Field

[0001] The utility model relates to the technical field of battery liquid injection, and specifically relates to a liquid injection mechanism. Background Art

[0002] The existing liquid injection mechanism generally includes a liquid injection assembly. The liquid injection assembly includes a liquid injection plate, a liquid injection cup, and a liquid injection lifting driving member. The liquid injection cup is arranged at the top end of the liquid injection plate, and the bottom end of the liquid injection cup passes through the through hole of the liquid injection plate and is provided with a liquid injection nozzle. The liquid injection cup has a liquid injection cavity, a liquid passing channel, and a liquid outlet channel that are sequentially communicated from top to bottom. The liquid outlet channel extends to the bottom end of the liquid injection cup and is communicated with the liquid injection nozzle. A liquid injection joint is arranged at the top end of the liquid injection cup, and the liquid injection joint is communicated with the liquid injection cavity. The liquid injection joint is used to be connected with an electrolyte supply device through a liquid supply pipeline. The liquid injection lifting driving member is used to drive the liquid injection plate to move up and down, so as to drive the liquid injection cup, the liquid injection nozzle, and the liquid injection joint to move up and down. In actual application, first, the liquid injection lifting driving member is used to drive the liquid injection plate to move downward, so as to drive the liquid injection cup, the liquid injection nozzle, and the liquid injection joint to move downward, so that the end of the liquid injection nozzle is matched with the liquid injection port of the battery. Then, the electrolyte supply device supplies electrolyte to the inside of the battery through the liquid supply pipeline, the liquid injection joint, the liquid injection cavity, the liquid passing channel, the liquid outlet channel, and the liquid injection nozzle, so as to realize liquid injection for the battery. This kind of liquid injection mechanism cannot clean the liquid injection cavity and the liquid passing channel of the liquid injection cup, resulting in the inner walls of the liquid injection cavity and the liquid passing channel often remaining with electrolyte. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a liquid injection mechanism, which can clean the liquid injection cavity and the liquid passing channel of the liquid injection cup, thereby avoiding the inner walls of the liquid injection cavity and the liquid passing channel from remaining with electrolyte.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] A liquid injection mechanism includes a liquid injection assembly. The liquid injection assembly includes a first liquid injection plate, a liquid injection cup, and a liquid injection lifting driving member. The liquid injection cup is arranged at the top end of the first liquid injection plate, and the bottom end of the liquid injection cup passes through a first through hole of the first liquid injection plate and is provided with a liquid injection nozzle. A liquid injection cavity, a liquid passing channel, and a liquid outlet channel are sequentially communicated with each other from top to bottom in the liquid injection cup. The liquid outlet channel extends to the bottom end of the liquid injection cup and is communicated with the liquid injection nozzle. A liquid injection joint is arranged at the top end of the liquid injection cup, and the liquid injection joint is communicated with the liquid injection cavity. The liquid injection lifting driving member is used to drive the first liquid injection plate to move up and down. It further includes a cleaning assembly. The cleaning assembly includes a plug rod and a cleaning module. An installation hole communicated with the liquid injection cavity is arranged at the top end of the liquid injection cup. The plug rod penetrates through the installation hole and can move up and down relative to the liquid injection cup. The bottom end of the plug rod is located in the liquid passing channel, and the bottom end of the plug rod is used to cooperate with the lower end of the liquid passing channel to block the liquid outlet channel. The top end of the plug rod is located above the liquid injection cup. The cleaning module includes a cleaning member, a cleaning lifting driving member, and a cleaning translation driving member. The cleaning member is located on one side of the liquid injection nozzle. The cleaning member is provided with a first flow channel and a second flow channel penetrating through both ends thereof. One end of a first joint is arranged in one end of the first flow channel, and the first joint is communicated with the first flow channel. A first plug is arranged in the other end of the first flow channel. One end of a second joint is arranged in one end of the second flow channel, and the second joint is communicated with the second flow channel. A second plug is arranged in the other end of the second flow channel. An liquid outlet and an liquid inlet are arranged at the top end of the cleaning member. The liquid outlet and the liquid inlet are respectively used to cooperate with the liquid injection nozzle. A third flow channel and a fourth flow channel are arranged in the cleaning member. The third flow channel is respectively communicated with the liquid outlet and the first flow channel. The fourth flow channel is respectively communicated with the liquid inlet and the second flow channel. The cleaning lifting driving member is used to drive the first cleaning member to move up and down. The cleaning translation driving member is used to drive the first cleaning member to move in a direction close to or away from the liquid injection nozzle.

[0006] As a preferred technical solution, the cleaning member includes a first cleaning block and a second cleaning block arranged at the top end of the first cleaning block. The first cleaning block is provided with a first flow channel and a second flow channel penetrating through both ends thereof. An outlet and an inlet respectively communicated with the first flow channel and the second flow channel are arranged at the top end of the first cleaning block. An liquid outlet and an liquid inlet are arranged at the top end of the second cleaning block. A third flow channel and a fourth flow channel are arranged in the second cleaning block. The third flow channel is respectively communicated with the liquid outlet and the outlet. The fourth flow channel is respectively communicated with the liquid inlet and the inlet.

[0007] As a preferred technical solution, the cleaning module further includes a first cleaning plate, a second cleaning plate, a liquid receiving box, and a cleaning bottom plate. The second cleaning plate is disposed at the top of the first cleaning plate through a support shaft. The top of the second cleaning plate is slidably connected to the bottom of the first liquid injection plate. The cleaning member is located between the liquid injection nozzle and the second cleaning plate. The cleaning member is disposed at the bottom inside the liquid receiving box, and the liquid receiving box is disposed at the top of the cleaning bottom plate.

[0008] As a preferred technical solution, the cleaning lifting driving member includes a cleaning lifting cylinder. The cleaning lifting cylinder is disposed at the bottom of the first cleaning plate. The end of the output shaft of the cleaning lifting cylinder passes through the through hole of the first cleaning plate and is connected to the bottom of the cleaning bottom plate. The cleaning lifting cylinder is used to drive the cleaning bottom plate to move up and down.

[0009] As a preferred technical solution, the cleaning translation driving member includes a first cleaning translation cylinder and a second cleaning translation cylinder. The first cleaning translation cylinder is disposed at the bottom of the second cleaning plate. The first cleaning translation cylinder is located between the cleaning member and the second cleaning translation cylinder. The second cleaning translation cylinder is disposed on one side of the first liquid injection plate. The end of the output shaft of the first cleaning translation cylinder is connected to the end of the output shaft of the second cleaning translation cylinder. The first cleaning translation cylinder is used to drive the second cleaning plate to move towards or away from the liquid injection nozzle. The second cleaning translation cylinder is used to drive the first cleaning translation cylinder to move towards or away from the liquid injection nozzle, so as to drive the second cleaning plate to move towards or away from the liquid injection nozzle.

[0010] As a preferred technical solution, a guiding block is disposed in the mounting hole at the top of the liquid injection cup. The top of the guiding block protrudes from the top of the liquid injection cup. The guiding block is sleeved on the outer periphery of the plug rod. An installation block is disposed at the top inside the liquid injection cup. The installation block is arranged in a ring shape on the outer periphery of the plug rod and is located below the mounting hole. A limiting block is formed on the outer periphery of the plug rod. The limiting block is located in the mounting hole. The top of the limiting block abuts against the bottom of the guiding block. The outer diameter of the limiting block is smaller than the inner diameter of the installation block. A connecting block is disposed inside the bottom of the installation block. The connecting block is sleeved on the outer periphery of the plug rod. An elastic member is disposed between the connecting block and the limiting block. One end of the elastic member is connected to the bottom of the limiting block, and the other end of the elastic member is connected to the top of the connecting block.

[0011] As a preferred technical solution, the cleaning assembly further includes a pressing block and an up-and-down air cylinder. A bracket is provided on one side of the liquid injection cup at the top end of the first liquid injection plate. The up-and-down air cylinder is arranged on the bracket. The pressing block is located below the up-and-down air cylinder and above the plug rod. The pressing block is connected to the end of the output shaft of the up-and-down air cylinder, and the up-and-down air cylinder is used to drive the pressing block to move up and down.

[0012] As a preferred technical solution, an air vent joint is provided at the top end of the liquid injection cup, and the air vent joint is communicated with the liquid injection cavity.

[0013] As a preferred technical solution, the liquid injection assembly further includes a second liquid injection plate. The second liquid injection plate is located above the first liquid injection plate. The liquid injection lifting driving member includes a liquid injection lifting air cylinder. The liquid injection lifting air cylinder is arranged at the bottom end of the first liquid injection plate. The end of the output shaft of the liquid injection lifting air cylinder passes through the second through hole of the first liquid injection plate and is connected to the bottom end of the second liquid injection plate.

[0014] As a preferred technical solution, a jig assembly is further included. The jig assembly includes a translation linear module and a liquid injection jig. One end of the translation linear module is located below the liquid injection assembly. The liquid injection jig is arranged at the top end of the translation linear module and below the liquid injection nozzle. The top end of the liquid injection jig has a placement groove for placing the battery. The translation linear module is used to drive the liquid injection jig to move away from or close to the liquid injection nozzle.

[0015] The beneficial effects of the present utility model are as follows: By providing the cleaning assembly, the cleaning assembly includes a plug rod and a cleaning module. The cleaning module includes a cleaning member, a cleaning lifting driving member, and a cleaning translation driving member. After the battery is injected with liquid through the liquid injection joint, the liquid injection cavity, the liquid passing channel, the liquid outlet channel, and the liquid injection nozzle by the electrolyte supply device, the liquid injection cavity and the liquid passing channel of the liquid injection cup can be cleaned, thereby avoiding the residual electrolyte on the inner walls of the liquid injection cavity and the liquid passing channel. Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of a liquid injection mechanism provided by an embodiment of the present utility model from a first angle;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the second angle of the shown liquid injection mechanism;

[0019] Figure 3 is Figure 1 a left view schematic diagram of the shown liquid injection mechanism;

[0020] Figure 4 is Figure 1 An exploded view of the liquid injection assembly, the plug rod, the pressing block and the upper and lower cylinders shown;

[0021] Figure 5 is Figure 1 A schematic structural view of the liquid injection cup and the plug rod of the liquid injection mechanism described;

[0022] Figure 6 is Figure 5 A schematic cross-sectional view of the liquid injection cup and the plug rod shown;

[0023] Figure 7 is Figure 6 A partially enlarged schematic view of the place A shown;

[0024] Figure 8 is Figure 1 A schematic structural view of the cleaning module of the liquid injection mechanism shown;

[0025] Figure 9 is Figure 8 A right view of the cleaning module shown;

[0026] Figure 10 is Figure 8 An exploded view of the cleaning module shown. Detailed implementation manners

[0027] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present utility model can be combined interactively without conflicting with each other.

[0028] Please refer to Figures 1 to 3 , a liquid injection mechanism provided by an embodiment of the present utility model includes a liquid injection assembly 10, a fixture assembly and a cleaning assembly.

[0029] Combined with Figure 4As shown, the liquid injection assembly 10 includes a first liquid injection plate 11, a liquid injection cup 12, a liquid injection lifting drive member, and a second liquid injection plate 14. The liquid injection cup 12 is arranged at the top end of the first liquid injection plate 11, and the bottom end of the liquid injection cup 12 passes through the first through hole 111 of the first liquid injection plate 11 and is provided with a liquid injection nozzle 123. The liquid injection cup 12 has a liquid injection cavity 1241, a liquid passing channel 1262, and a liquid outlet channel 1263 that are sequentially communicated from top to bottom. The shape of the liquid passing channel 1262 is approximately funnel-shaped, the cross-sectional shape of the lower end of the liquid passing channel 1262 is an inverted trapezoid, and the liquid outlet channel 1263 extends to the bottom end of the liquid injection cup 12 and is communicated with the liquid injection nozzle 123. The cross-sectional shape of the liquid outlet channel 1263 is rectangular, and the inner diameter of the liquid outlet channel 1263 is the same as the minimum inner diameter of the liquid passing channel 1262. The end of the liquid injection nozzle 123 is used to cooperate with the liquid injection port 101 of the battery 100. A liquid injection joint 121 and a ventilation joint 122 are arranged at the top end of the liquid injection cup 12, and both the liquid injection joint 121 and the ventilation joint 122 are communicated with the liquid injection cavity 1241. The liquid injection joint 121 is used to be connected to the electrolyte supply device through a liquid supply pipe. The ventilation joint 122 is used to be connected to a vacuum device through a connecting pipe. The vacuum device is, for example, a vacuum pump that can be used for both air extraction and air inflation.

[0030] In this embodiment, as shown in combination with Figure 5 and Figure 6 The liquid injection cup 12 includes a hollow liquid injection cup body 124, an upper cup cover 125, and a lower cup cover 126 arranged at the top end of the liquid injection cup body 124. The liquid injection cup body 124 has the above-mentioned liquid injection cavity 1241. The bottom end of the lower cup cover 126 passes through the first through hole 111 of the first liquid injection plate 11 and is provided with a liquid injection nozzle 123 in a sleeved manner. A fastener 1231 such as a nut is sleeved on the outer periphery of the top end of the liquid injection nozzle 123 and the outer periphery of the lower cup cover 126 to fix the liquid injection nozzle 123 and the lower cup cover 126 together. The lower cup cover 126 has the above-mentioned liquid passing channel 1262 and liquid outlet channel 1263, and the liquid outlet channel 1263 extends to the bottom end of the lower cup cover 126. A liquid injection installation portion 1261 is formed on the outer periphery of the top end of the lower cup cover 126, and the liquid injection installation portion 1261 is arranged at the top end of the first liquid injection plate 11 through, for example, screws, so as to realize arranging the liquid injection cup 12 at the top end of the first liquid injection plate 11. The liquid injection joint 121 is arranged at the top end of the upper cup cover 125, and the ventilation joint 122 is arranged on one side of the upper cup cover 125.

[0031] In this embodiment, a first mounting hole position is provided at the top of the upper cup cover 125. The liquid injection joint 121 is disposed through the first mounting hole position. One end of the liquid injection joint 121 is located within the liquid injection cavity 1241, and the other end of the liquid injection joint 121 is used to be connected to the electrolyte supply device through a liquid supply pipe. A second mounting hole position is provided on one side of the upper cup cover 125. One end of the ventilation joint 122 is disposed within the second mounting hole position, and the other end of the ventilation joint 122 is used to be connected to a vacuum device through a connecting pipe. A gas channel 1251 is provided within the upper cup cover 125, and the ventilation joint 122 is communicated with the liquid injection cavity 1241 through the gas channel 1251.

[0032] The liquid injection lifting driving member is used to drive the first liquid injection plate 11 to move up and down, so as to drive the liquid injection cup 12 to move up and down, and further drive the liquid injection nozzle 123, the liquid injection joint 121, and the ventilation joint 122 to move up and down. Specifically, the liquid injection lifting driving member includes a liquid injection lifting cylinder 13. The second liquid injection plate 14 is located above the first liquid injection plate 11. The second liquid injection plate 14 is used to be disposed on the frame. The liquid injection lifting cylinder 13 is disposed at the bottom end of the first liquid injection plate 11. The end of the output shaft of the liquid injection lifting cylinder 13 passes through the second through hole 112 of the first liquid injection plate 11 and is connected to the bottom end of the second liquid injection plate 14. In practical applications, by extending or retracting the output shaft of the liquid injection lifting cylinder 13, the first liquid injection plate 11 can be driven to move up and down.

[0033] Liquid injection guide columns 15 are provided at the top end of the first liquid injection plate 11. The top ends of the liquid injection guide columns 15 pass through the through holes of the second liquid injection plate 14 and are located above the second liquid injection plate 14. The up and down movement of the first liquid injection plate 11 can drive the liquid injection guide columns 15 to move up and down. The provided liquid injection guide columns 15 play a guiding role in the up and down movement of the first liquid injection plate 11. Liquid injection linear bearings 16 are provided at the top end of the second liquid injection plate 14. The liquid injection linear bearings 16 are sleeved on the outer periphery of the liquid injection guide columns 15. The provided liquid injection linear bearings 16 provide support for the up and down movement of the liquid injection guide columns 15.

[0034] In this embodiment, there are two liquid injection lifting cylinders 13 and two second liquid injection plates 14 respectively. The two liquid injection lifting cylinders 13 are arranged opposite to each other left and right and are respectively close to both ends of the first liquid injection plate 11. The two second liquid injection plates 14 are arranged opposite to each other left and right and correspond to both ends of the first liquid injection plate 11 respectively. There are three liquid injection cups 12. The three liquid injection cups 12 are arranged at intervals from left to right and are located between the two second liquid injection plates 14. Therefore, the present utility model can realize liquid injection for three batteries 100 at one time. There are two liquid injection guide columns 15 respectively between each second liquid injection plate 14 and the first liquid injection plate 11. The top ends of the two liquid injection guide columns 15 are connected through a liquid injection limit plate 151. The liquid injection limit plate 151 can move up and down along with the two liquid injection guide columns 15. The provided liquid injection limit plate 151 plays a limiting role in the downward movement of the two liquid injection guide columns 15.

[0035] The fixture assembly includes a translational linear module 21 and a liquid injection fixture 22. The translational linear module 21 is used to be arranged on the frame. One end of the translational linear module 21 is located below the liquid injection assembly 10, and the other end of the translational linear module 21 extends forward. The liquid injection fixture 22 is arranged at the top end of the translational linear module 21 and is located below the liquid injection nozzle 123. The top end of the liquid injection fixture 22 has a placement groove for placing the battery 100. In practical applications, after the battery 100 is placed in the placement groove, a part of the battery 100 protrudes from the top end of the liquid injection fixture 22. The translational linear module 21 is used to drive the liquid injection fixture 22 to move in a direction away from or close to the liquid injection nozzle 123, that is, move back and forth.

[0036] The linear translation module 21 is an existing structure, mainly including a translation bottom plate 211, two translation cylinders 215 arranged relatively left and right, a translation top plate 219 and a hinge. The translation bottom plate 211 is used to be arranged on the frame. One end of the translation bottom plate 211 is located below the liquid injection assembly 10, and the other end of the translation bottom plate 211 extends forward. On the left and right sides of the top end of the translation bottom plate 211, two mounting boxes 212 are respectively provided. At the bottom of the two mounting boxes 212, two first translation slide rails are respectively provided. The length direction of the first translation slide rail is the same as the length direction of the translation bottom plate 211. The first translation slide rail is slidably fitted with a first translation slider 213. Part of the first translation slider 213 protrudes from the top end of the corresponding mounting box 212. The translation top plate 219 is arranged on the top ends of the first translation sliders 213 of the two first translation slide rails. The liquid injection jig 22 is arranged on the top end of the translation top plate 219. On the top end of the translation bottom plate 211, two support members are respectively provided in front of and behind the mounting box 212. The top ends of the support members protrude from the top end of the mounting box 212. A protection plate 214 is arranged between the top ends of the two support members. The protection plate 214 is located above the mounting box 212 and is arranged through the vacant position of the corresponding first translation slider 213. The arranged protection plate 214 plays a role in protecting the first translation slide rail. The two translation cylinders 215 are respectively arranged on the top end of the translation bottom plate 211 and are close to the other end of the translation bottom plate 211. On the top end of the translation bottom plate 211, a second translation slide rail 217 is provided between the two mounting boxes 212. The length direction of the second translation slide rail 217 is the same as the length direction of the translation bottom plate 211. The hinge is located between the two mounting boxes 212 and above the second translation slide rail 217. The hinge includes a plurality of X-shaped hinge units connected in sequence from front to back. The number of hinge units can be set according to actual situations. The hinge unit includes a strip-shaped first connecting member 2161a and a second connecting member 2161b. Between the middle parts of the first connecting member 2161a and the second connecting member 2161b, they are connected by a first fixed shaft. The bottom end of the first fixed shaft is connected to a second translation slider 218. The second translation slider 218 is slidably fitted with the second translation slide rail 217.The rear end of the first connecting member 2161a of the previous hinge unit is connected to the front end of the second connecting member 2161b of the subsequent hinge unit by a second fixed shaft, and the rear end of the second connecting member 2161b of the previous hinge unit is connected to the front end of the first connecting member 2161a of the subsequent hinge unit by a third fixed shaft. Among the multiple hinge units, two first mounting members 2162 are respectively provided at the front ends of the first connecting member 2161a and the second connecting member 2161b of the first hinge unit. The two first mounting members 2162 are arranged opposite to each other left and right, and the two first mounting members 2162 are respectively connected to the ends of the output shafts of the two translation cylinders 215. The rear ends of the first connecting member 2161a and the second connecting member 2161b of the last hinge unit are both connected to a second mounting member 2163, and the second mounting member 2163 is arranged at the bottom end of the translation top plate 219. The two translation cylinders 215 are used to drive the two first mounting members 2162 to move away from or close to each other, so as to drive the first connecting member 2161a and the second connecting member 1261b of the first hinge unit to move along the second translation slide rail 217 in the direction away from or close to the liquid injection assembly 10, that is, move back and forth, so as to sequentially drive the remaining hinge units to move back and forth, and further drive the second mounting member 2163 to move back and forth, so as to drive the liquid injection jig 22 to move back and forth through the translation top plate 219.

[0037] Combined Figures 4 to 10 As shown, the cleaning assembly includes a plug rod 31, a pressing block 33, an up-and-down cylinder 32 and a cleaning module.

[0038] An installation hole communicating with the liquid injection cavity 1241 is provided at the top end of the upper cup cover 125 of the liquid injection cup 12. The plug rod 31 penetrates through the installation hole and can move up and down relative to the liquid injection cup 12. The plug rod 31 is located behind the liquid injection joint 121. The bottom end of the plug rod 31 is located in the liquid passing channel 1262, and the bottom end of the plug rod 31 is used to cooperate with the lower end of the liquid passing channel 1262 to block the liquid outlet channel 1263. The top end of the plug rod 31 is located above the liquid injection cup 12. The cross-sectional shape of the bottom end of the plug rod 31 is adapted to the cross-sectional shape of the lower end of the liquid passing channel 1262, and is also an inverted trapezoid.

[0039] In this embodiment, a T-shaped guide block 311 is provided in the mounting hole of the liquid injection cup 12. The top end of the guide block 311 protrudes from the top end of the upper cup cover 125 of the liquid injection cup 12 and is arranged at the top end of the upper cup cover 125 through fasteners such as screws. The guide block 311 is sleeved on the outer periphery of the plug rod 31, and the plug rod 31 can move up and down relative to the guide block 311. The provided guide block 311 guides the up and down movement of the plug rod 31. At the top inside the liquid injection cup 12, that is, at the bottom end of the upper cup cover 125, a mounting block 312 is provided. The mounting block 312 is arranged around the outer periphery of the plug rod 31 and is located below the mounting hole. A limiting block 31a is formed on the outer periphery of the plug rod 31, and the limiting block 31a is located inside the mounting hole. The top end of the limiting block 31a abuts against the bottom end of the guide block 311. The outer diameter of the limiting block 31a is smaller than the inner diameter of the mounting block 312. Inside the bottom end of the mounting block 312, a T-shaped connecting block 313 is provided. The connecting block 313 is sleeved on the outer periphery of the plug rod 31, and the plug rod 31 can move up and down relative to the connecting block 313. An elastic member 314 is provided between the connecting block 313 and the limiting block 31a. The elastic member 314 is, for example, a spring. One end of the elastic member 314 is connected to the bottom end of the limiting block 31a, and the other end of the elastic member 314 is connected to the top end of the connecting block 313. The number of the elastic members 314 can be set according to the actual situation. The up and down movement of the liquid injection cup 12 can drive the guide block 311, the plug rod 31, the mounting block 312, the connecting block 313, and the elastic member 314 to move up and down.

[0040] At the top end of the first liquid injection plate 11, a bracket 17 is provided on one side of the liquid injection cup 12, for example, at the rear of the liquid injection cup 12. The up and down cylinder 32 is arranged on the bracket 17. The pressing block 33 is located below the up and down cylinder 32 and above the plug rod 31. The pressing block 33 is connected to the end of the output shaft of the up and down cylinder 32. The up and down cylinder 32 is used to drive the pressing block 33 to move up and down. The up and down movement of the first liquid injection plate 11 can drive the bracket 17, the up and down cylinder 32, and the pressing block 33 to move up and down. In actual application, when the up and down cylinder 32 drives the pressing block 33 to move downward, when the pressing block 33 moves downward to contact the top end of the plug rod 31, as the pressing block 33 continues to move, the pressing block 33 will squeeze the plug rod 31, so that the plug rod 31 can be driven to move downward by the pressing block 33 until the end of the plug rod 31 is matched with the lower end of the liquid passing channel 1262. At this time, the elastic member 314 is compressed and the limiting block 31a is located inside the top end of the mounting block 312. In this way, the liquid outlet channel 1263 can be blocked by the plug rod 31. When the up and down cylinder 32 drives the pressing block 33 to move upward, when the pressing block 33 separates from the top end of the plug rod 31, since the plug rod 31 is not squeezed by the pressing block 33, under the reset action of the elastic member 314, the plug rod 31 can be driven to move upward to the initial position. At this time, the limiting block 31a abuts against the bottom end of the guide block 311 again.

[0041] There are three liquid injection cups 12 in this embodiment, so there are also three plug rods 31 and one pressing block 33. When the pressing block 33 moves downward, the pressing block 33 can simultaneously contact the tops of the three plug rods 31 and can simultaneously squeeze the three plug rods 31.

[0042] In this embodiment, a support top plate 171 is provided at the top of the support 17. The support top plate 171 partially protrudes from the side of the support 17 close to the liquid injection cup 12, and the up and down air cylinder 32 is arranged at the bottom end of the support top plate 171.

[0043] The cleaning module includes a first cleaning plate 34, a second cleaning plate 35, a liquid receiving box 37, a cleaning bottom plate 36, a cleaning member, a cleaning lifting driving member, and a cleaning translation driving member.

[0044] The cleaning member is located on one side of the liquid injection nozzle 123, such as behind the liquid injection nozzle 123. The cleaning member is provided with a first flow channel 3811 and a second flow channel 3812 penetrating through its two ends. One end of the first joint 3813 is arranged inside one end of the first flow channel 3811, and the other end of the first joint 3813 is used to be connected to a cleaning liquid supply device through a first pipeline. The first joint 3813 is communicated with the first flow channel 3811, and a first plug 3815 is arranged inside the other end of the first flow channel 3811 to block the other end of the first flow channel 3811. One end of the second joint 3814 is arranged inside one end of the second flow channel 3812, and the other end of the second joint 3814 is used to be connected to a recovery device through a second pipeline. The second joint 3814 is communicated with the second flow channel 3812, and a second plug 3816 is arranged inside the other end of the second flow channel 3816 to block the other end of the second flow channel 3816. The top end of the cleaning member is provided with a liquid outlet 3821 and a liquid inlet 3822, and the liquid outlet 3821 and the liquid inlet 3822 are respectively used to cooperate with the liquid injection nozzle 123. A third flow channel and a fourth flow channel are arranged inside the cleaning member. The third flow channel is respectively communicated with the liquid outlet 3821 and the first flow channel 3811, and the fourth flow channel is respectively communicated with the liquid inlet 3822 and the second flow channel 3812.

[0045] In this embodiment, the cleaning member includes a first cleaning block 381 and a second cleaning block 382 arranged on the top end of the first cleaning block 381. The first cleaning block 381 is provided with a first flow channel 3811 and a second flow channel 3812 penetrating through its two ends. The top end of the first cleaning block 381 is provided with an outlet and an inlet respectively communicated with the first flow channel 3811 and the second flow channel 3812.

[0046] The top end of the second cleaning block 382 is provided with a liquid outlet 3821 and a liquid inlet 3822. A third flow channel and a fourth flow channel are arranged inside the second cleaning block 382. The third flow channel is respectively communicated with the liquid outlet 3821 and the outlet, and the fourth flow channel is respectively communicated with the liquid inlet 3822 and the inlet.

[0047] The second cleaning plate 35 is located above the first cleaning plate 34. The second cleaning plate 35 is arranged at the top end of the first cleaning plate 34 through a support shaft 341, and the number of support shafts 341 can be set according to the actual situation. The second cleaning plate 35 is located below the first liquid injection plate 11 and is slidably connected to the bottom end of the first liquid injection plate 11. Specifically, a cleaning slide rail 351 is provided at the bottom end of the first liquid injection plate 11, and the length direction of the cleaning slide rail 351 is the same as the width direction of the first liquid injection plate 11. A cleaning slider 352 is provided at the top end of the second cleaning plate 35, and the cleaning slider 352 is slidably matched with the cleaning slide rail 351. The number of the cleaning slide rail 351 and the cleaning slider 352 can be set according to the actual situation.

[0048] The cleaning member is located between the liquid injection nozzle 123 and the second cleaning plate 35, that is, the cleaning member and the second cleaning plate 35 are sequentially located behind the liquid injection nozzle 123. The first cleaning block 381 of the cleaning member is arranged at the bottom inside the liquid receiving box 37 through a support block 373, and the number of support blocks 373 can be set according to the actual situation. The liquid receiving box 37 is arranged at the top end of the cleaning bottom plate 36. A liquid outlet hole position 372 is provided at the bottom inside the liquid receiving box 37, and the liquid outlet hole position 372 extends to the bottom end of the liquid receiving box 37. The liquid outlet joint 371 is located below the liquid receiving box 37. One end of the liquid outlet joint 371 is arranged inside the liquid outlet hole position 372, and the other end of the liquid outlet joint 371 is used to be connected to the liquid collecting box through a liquid outlet pipe.

[0049] The cleaning lifting driving member includes a cleaning lifting cylinder 39, and the cleaning lifting cylinder 39 is arranged at the bottom end of the first cleaning plate 34. The end of the output shaft of the cleaning lifting cylinder 39 passes through the through hole 342 of the first cleaning plate 34 and is connected to the bottom end of the cleaning bottom plate 36. The cleaning lifting cylinder 39 is used to drive the cleaning bottom plate 36 to move up and down, so as to drive the liquid receiving box 37 to move up and down, and further drive the first cleaning block 381, the second cleaning block 382, the first joint 3813, the second joint 3814, and the liquid outlet joint 371 to move up and down.

[0050] The first cleaning plate 34 is provided with a guide post through hole, and a cleaning guide post 343 is penetrated through the guide post through hole. The top end of the cleaning guide post 343 is connected to the bottom end of the cleaning bottom plate 36, and the bottom end of the cleaning guide post 343 is located below the first cleaning plate 34. The up and down movement of the cleaning bottom plate 36 can drive the up and down movement of the cleaning guide post 343. The provided cleaning guide post 343 provides support for the up and down movement of the cleaning bottom plate 36. A cleaning linear bearing 344 is arranged in the guide post through hole, and the cleaning linear bearing 344 is sleeved on the outer periphery of the cleaning guide post 343. The provided cleaning linear bearing 344 provides support for the up and down movement of the cleaning guide post 343. The guide post through hole, the cleaning guide post 343, and the cleaning linear bearing 344 are respectively two. Understandably, the quantities of the guide post through hole, the cleaning guide post 343, and the cleaning linear bearing 344 can be set according to actual situations. The cleaning lifting cylinder 39 is located between the two cleaning guide posts 343.

[0051] The cleaning translation driving member includes a first cleaning translation cylinder 41 and a second cleaning translation cylinder 42. The first cleaning translation cylinder 41 is arranged at the bottom end of the second cleaning plate 35. The first cleaning translation cylinder 41 is located between the cleaning member and the second cleaning translation cylinder 42. The second cleaning translation cylinder 42 is arranged at the bottom end of an L-shaped cylinder fixing plate 421. The cylinder fixing plate 421 is arranged on one side (i.e., the rear side) of the first liquid injection plate 11. The end of the output shaft of the first cleaning translation cylinder 41 and the end of the output shaft of the second cleaning translation cylinder 42 are arranged front and back relatively, and the two are connected by a coupling 411. The first cleaning translation cylinder 41 is used to drive the second cleaning plate 35 to move in the direction of approaching or departing from the liquid injection nozzle 123 (i.e., moving back and forth), so as to drive the support shaft 341, the first cleaning plate 34, the cleaning lifting cylinder 39, the cleaning bottom plate 36, the liquid receiving box 37, the liquid outlet joint 371, the first cleaning block 381, the second cleaning block 382, the first joint 3813, and the second joint 3814 to move in the direction of approaching or departing from the liquid injection nozzle 123. The second cleaning translation cylinder 42 is used to drive the first cleaning translation cylinder 41 to move in the direction of approaching or departing from the liquid injection nozzle 123 (i.e., moving back and forth), so as to drive the second cleaning plate 35, the support shaft 341, the first cleaning plate 34, the cleaning lifting cylinder 39, the cleaning bottom plate 36, the liquid receiving box 37, the liquid outlet joint 371, the first cleaning block 381, the second cleaning block 382, the first joint 3813, and the second joint 3814 to move in the direction of approaching or departing from the liquid injection nozzle 123.

[0052] With the above structure, in actual application, first, the translation linear module 21 drives the liquid injection fixture 22 to move away from the liquid injection nozzle 123, so that the liquid injection fixture 22 is located in front of the liquid injection nozzle 123, which facilitates placing the battery 100 in the placement groove of the liquid injection fixture 22. Then, the battery 100 is placed in the placement groove of the liquid injection fixture 22. At this time, a part of the battery 100 protrudes from the top end of the liquid injection fixture 22. Then, the translation linear module 21 drives the liquid injection fixture 22 to move towards the liquid injection nozzle 123, thereby driving the battery 100 to move towards the liquid injection nozzle 123, so that the battery 100 is located below the liquid injection nozzle 123. Then, the liquid injection lifting cylinder 13 drives the first liquid injection plate 11 to move downward, thereby driving the liquid injection cup 12, the liquid injection nozzle 123, the liquid injection joint 121, and the ventilation joint 122 to move downward until the end of the liquid injection nozzle 123 is engaged with the liquid injection port 101 of the battery 100. Then, the interior of the battery 100 is evacuated through the vacuum device via the connection pipe, the ventilation joint 122, the liquid injection chamber 1241, the liquid passing channel 1262, the liquid outlet channel 1263, and the liquid injection nozzle 123, so that a negative pressure is generated inside the battery 100. The negative pressure is, for example, -60 Kpa (kilopascals). Observe the numerical change of the pressure gauge connected to the connection pipe within a predetermined time period. If there is no change, it indicates that the airtightness of the battery 100 is qualified. Then, the electrolyte supply device injects electrolyte into the interior of the battery 100 via the liquid supply pipe, the liquid injection joint 121, the liquid injection chamber 1241, the liquid passing channel 1262, the liquid outlet channel 1263, and the liquid injection nozzle 123. After completion, it is left standing for 2 to 3 minutes, preferably 2 minutes. Then, the interior of the battery 100 is restored to normal pressure. Then, the interior of the battery 100 is evacuated through the vacuum device via the connection pipe, the ventilation joint 122, the liquid injection chamber 1241, the liquid passing channel 1262, the liquid outlet channel 1263, and the liquid injection nozzle 123 to generate a negative pressure inside the battery 100, and the negative pressure is maintained for 5 to 7 S (seconds), preferably 5 S. Then, nitrogen is introduced into the interior of the battery 100 through the vacuum device via the connection pipe, the ventilation joint 122, the liquid injection chamber 1241, the liquid passing channel 1262, the liquid outlet channel 1263, and the liquid injection nozzle 123 to generate a positive pressure inside the battery 100, and the positive pressure is maintained for 115 to 120 S, preferably 115 S. Then, the negative pressure operation and the positive pressure operation are cycled once, so that the injected electrolyte can fully infiltrate the battery core of the battery 100, thus realizing the liquid injection of the battery 100. After the liquid injection is completed, the liquid injection lifting cylinder 13 drives the first liquid injection plate 11 to move upward, thereby driving the liquid injection cup 12, the liquid injection nozzle 123, the liquid injection joint 121, and the ventilation joint 122 to move upward until the end of the liquid injection nozzle 123 is separated from the liquid injection port 101 of the battery 100. Then, the translation linear module 21 drives the liquid injection fixture 22 to move away from the liquid injection nozzle 123, so that the liquid injection fixture 22 is located in front of the liquid injection nozzle 123, which facilitates removing the battery 10 from the placement groove of the liquid injection fixture 22.Then, the battery 100 can be taken out from the placement groove of the liquid injection fixture 22 to proceed with the next process. If the airtightness of the battery 100 is unqualified, the battery 100 will not be injected with liquid. The first liquid injection plate 11 is driven to move upward by the liquid injection lifting air cylinder 13, which can drive the liquid injection cup 12, the liquid injection nozzle 123, the liquid injection joint 121, and the ventilation joint 122 to move upward until the end of the liquid injection nozzle 123 is separated from the liquid injection port 101 of the battery 100. Then, the liquid injection fixture 22 is driven to move away from the liquid injection nozzle 123 by the translation linear module 21, and then the battery 100 can be taken out from the placement groove of the liquid injection fixture 22.

[0053] After the liquid injection is completed and the battery 100 is taken out from the placement groove of the liquid injection fixture 22, the cleaning assembly works: Since the cleaning part is located behind the liquid injection nozzle 123 in the initial state, first, the cleaning lifting cylinder 39 is used to drive the liquid receiving box 37, the first cleaning block 381, and the second cleaning block 382 to move downward, so that the second cleaning block 382 is located below the liquid injection nozzle 123. Then, the second translation cylinder 42 is used to drive the first translation cylinder 41 to move toward the liquid injection nozzle 123, that is, move forward, so as to drive the first cleaning block 381, the second cleaning block 382, the liquid receiving box 37, and the cleaning lifting cylinder 39 to move forward, so that the liquid outlet 3821 is located below the liquid injection nozzle 123. Then, the cleaning lifting cylinder 39 is used to drive the liquid receiving box 37, the first cleaning block 381, and the second cleaning block 382 to move upward until the liquid injection nozzle 123 is matched with the liquid outlet 3821. Then, a cleaning liquid supply device is used to inject a predetermined amount of cleaning liquid, such as DMC dimethyl carbonate high-purity cleaning agent, into the liquid passing channel 1262 and the liquid injection cavity 1241 through the first joint 3813, the first flow channel 3811, the outlet, the third flow channel, the liquid injection nozzle 123, and the liquid outlet channel 1263. Then, the upper and lower cylinder 32 is used to drive the pressing block 33 to move downward. When the pressing block 33 contacts the top end of the plug rod 31, as the pressing block 33 continues to move, the pressing block 33 will squeeze the plug rod 31, so that the plug rod 31 can be driven to move downward by the pressing block 33 until the end of the plug rod 31 is matched with the lower end of the liquid passing channel 1262. At this time, the elastic member 314 is compressed. In this way, the liquid outlet channel 1263 can be blocked by the plug rod 31, so that the cleaning liquid will not flow out of the liquid outlet channel 1263. Then, the cleaning lifting cylinder 39 is used to drive the liquid receiving box 37, the first cleaning block 381, and the second cleaning block 382 to move downward to the initial position, so that the liquid injection nozzle 123 is separated from the liquid outlet 3821. At the same time, the second translation cylinder 42 is used to drive the first translation cylinder 41 to move away from the liquid injection nozzle 123, that is, move backward, so as to drive the first cleaning block 381, the second cleaning block 382, the liquid receiving box 37, and the cleaning lifting cylinder 39 to move backward, so that the liquid injection nozzle 123 is located above the liquid receiving box 37. In this way, the cleaning liquid flowing out of the liquid outlet channel 1263 and the liquid injection nozzle 123 can drip into the liquid receiving box 37, and the cleaning liquid in the liquid receiving box 37 can flow into the liquid collecting box through the liquid outlet hole position 372 and the liquid outlet joint 371 for collection.

[0054] After injecting the cleaning liquid into the liquid injection chamber 1241 and the liquid passing channel 1262, let the cleaning liquid stand in the liquid injection chamber 1241 and the liquid passing channel 1262 for a period of time. In this way, the electrolyte remaining on the inner walls of the liquid injection chamber 1241 and the liquid passing channel 1262 can be dissolved in the cleaning liquid, thus realizing the cleaning of the liquid injection chamber 1241 and the liquid passing channel 1262 of the liquid injection cup 12, and thereby avoiding the remaining electrolyte on the inner walls of the liquid injection chamber 1241 and the liquid passing channel 1262. Then, drive the first cleaning block 381, the second cleaning block 382, and the liquid receiving box 37 to move in the direction close to the liquid injection nozzle 123, that is, move forward, by the first translation cylinder 41, so that the liquid inlet 3822 is located below the liquid injection nozzle 123. Then, drive the liquid receiving box 37, the first cleaning block 381, and the second cleaning block 382 to move upward by the cleaning lifting cylinder 39 until the liquid injection nozzle 123 is engaged with the liquid inlet 3822. Then, drive the pressing block 33 to move upward to the initial position by the up and down cylinder 32. When the pressing block 33 is separated from the top end of the plug rod 31, since the plug rod 31 is not extruded by the pressing block 33, under the reset drive of the elastic member 314, the plug rod 31 can move upward to the initial position. At this time, the lower end of the plug rod 31 is separated from the lower end of the liquid passing channel 1262, and the mixture of the cleaning liquid and the electrolyte in the liquid injection chamber 1241 and the liquid passing channel 1262 will flow into the recovery device through the liquid outlet channel 1263, the liquid injection nozzle 123, the fourth flow channel, the inlet, the second flow channel 3812, and the second joint 3814 for recovery. After that, drive the liquid receiving box 37, the first cleaning block 381, and the second cleaning block 382 to move downward to the initial position by the cleaning lifting cylinder 39 to separate the liquid injection nozzle 123 from the liquid inlet 3822, and then drive the first cleaning block 381, the second cleaning block 382, and the liquid receiving box 37 to move backward to the initial position by the first translation cylinder 41.

[0055] Through the provided cleaning component, the cleaning component includes a plug rod 31 and a cleaning module. The cleaning module includes a cleaning part, a cleaning lifting driving part, and a cleaning translation driving part. After the electrolyte supply device injects electrolyte into the battery 100 through the liquid injection joint 121, the liquid injection cavity 1241, the liquid passing channel 1262, the liquid outlet channel 1263, and the liquid injection nozzle 123, it can clean the liquid injection cavity 1241 and the liquid passing channel 1262 of the liquid injection cup 12, thereby avoiding the remaining electrolyte on the inner walls of the liquid injection cavity 1241 and the liquid passing channel 1262. Through the provided ventilation joint 122, on the one hand, it can detect the airtightness of the battery 100 before injecting electrolyte into the battery 100. The battery 100 with qualified airtightness is injected with electrolyte, and the battery 100 with unqualified airtightness is not injected with electrolyte, ensuring the quality of the battery 100. On the other hand, it can perform negative pressure injection on the battery 100. At the same time, after injecting electrolyte into the battery 100, it can perform positive and negative pressure circulation operations on the inside of the battery 100, so that the electrolyte can fully infiltrate the battery core of the battery 100, further ensuring the quality of the battery 100. Through the provided fixture component, the liquid injection fixture 22 is driven by the translation linear module 21 to move towards or away from the liquid injection nozzle 123, so as to move the battery 100 under the liquid injection nozzle 123 and move the battery 100 out from under the liquid injection nozzle 123. The automation degree is high, avoiding manual operation, improving the liquid injection efficiency, and reducing the labor intensity of workers.

[0056] The above is a specific description of the preferred embodiment of the present invention, but the present invention is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A liquid injection mechanism, comprising a liquid injection assembly, wherein the liquid injection assembly comprises a first liquid injection plate, a liquid injection cup and a liquid injection lifting drive member, the liquid injection cup is arranged at the top end of the first liquid injection plate, and the bottom end of the liquid injection cup passes through the first through hole of the first liquid injection plate and is provided with a liquid injection nozzle, the liquid injection cup has a liquid injection cavity, a liquid passage and a liquid outlet channel connected in sequence from top to bottom, the liquid outlet channel extends to the bottom end of the liquid injection cup and is connected to the liquid injection nozzle, the top end of the liquid injection cup is provided with a liquid injection joint, the liquid injection joint is connected to the liquid injection cavity, the liquid injection lifting drive member is used to drive the first liquid injection plate to move up and down, characterized in that Also included is a cleaning assembly, which includes a blocking rod and a cleaning module; The top of the liquid injection cup is provided with a mounting hole connected to the liquid injection cavity, the blocking rod is arranged through the mounting hole and can move up and down relative to the liquid injection cup, the bottom end of the blocking rod is located in the liquid passage, the bottom end of the blocking rod is used to cooperate with the lower end of the liquid passage to block the liquid outlet channel, and the top end of the blocking rod is located above the liquid injection cup; The cleaning module comprises a cleaning part, a cleaning lifting drive part and a cleaning translation drive part, the cleaning part is located on one side of the liquid injection nozzle, the cleaning part is provided with a first flow channel and a second flow channel running through both ends thereof, one end of the first joint is arranged in one end of the first flow channel, the first joint is communicated with the first flow channel, a first plug is arranged in the other end of the first flow channel, one end of the second joint is arranged in one end of the second flow channel, the second joint is communicated with the second flow channel, and a second plug is arranged in the other end of the second flow channel, a liquid outlet and a liquid inlet are arranged at the top of the cleaning part, the liquid outlet and the liquid inlet are respectively used to cooperate with the liquid injection nozzle, a third flow channel and a fourth flow channel are arranged in the cleaning part, the third flow channel is respectively communicated with the liquid outlet and the first flow channel, the fourth flow channel is respectively communicated with the liquid inlet and the second flow channel, the cleaning lifting drive part is used to drive the cleaning part to move up and down, and the cleaning translation drive part is used to drive the cleaning part to move toward or away from the liquid injection nozzle.

2. The liquid injection mechanism according to claim 1, characterized in that: The cleaning member comprises a first cleaning block and a second cleaning block arranged at the top of the first cleaning block, the first cleaning block is provided with a first flow channel and a second flow channel running through both ends thereof, and the top of the first cleaning block is provided with an outlet and an inlet respectively communicating with the first flow channel and the second flow channel; The top of the second cleaning block is provided with a liquid outlet and a liquid inlet, and the second cleaning block is provided with a third flow channel and a fourth flow channel. The third flow channel is respectively connected to the liquid outlet and the outlet, and the fourth flow channel is respectively connected to the liquid inlet and the inlet.

3. The liquid injection mechanism according to claim 1, characterized in that: The cleaning module also includes a first cleaning plate, a second cleaning plate, a liquid receiving box and a cleaning bottom plate. The second cleaning plate is arranged at the top end of the first cleaning plate through a supporting shaft. The top end of the second cleaning plate is slidably connected to the bottom end of the first liquid injection plate. The cleaning component is located between the liquid injection nozzle and the second cleaning plate. The cleaning component is arranged at the bottom of the liquid receiving box. The liquid receiving box is arranged at the top end of the cleaning bottom plate.

4. The liquid injection mechanism according to claim 3, characterized in that: The cleaning lifting drive component includes a cleaning lifting cylinder, which is arranged at the bottom end of the first cleaning plate. The end of the output shaft of the cleaning lifting cylinder passes through the through hole of the first cleaning plate and is connected to the bottom end of the cleaning bottom plate. The cleaning lifting cylinder is used to drive the cleaning bottom plate to move up and down.

5. The liquid injection mechanism according to claim 3, characterized in that: The cleaning translation drive member includes a first cleaning translation cylinder and a second cleaning translation cylinder, the first cleaning translation cylinder is arranged at the bottom end of the second cleaning plate, the first cleaning translation cylinder is located between the cleaning member and the second cleaning translation cylinder, the second cleaning translation cylinder is arranged on one side of the first liquid injection plate, the end of the output shaft of the first cleaning translation cylinder is connected to the end of the output shaft of the second cleaning translation cylinder, the first cleaning translation cylinder is used to drive the second cleaning plate to move toward or away from the liquid injection nozzle, and the second cleaning translation cylinder is used to drive the first cleaning translation cylinder to move toward or away from the liquid injection nozzle, thereby driving the second cleaning plate to move toward or away from the liquid injection nozzle.

6. The liquid injection mechanism according to claim 1, characterized in that: A guide block is provided in the mounting hole at the top of the liquid filling cup, the top of the guide block protrudes from the top of the liquid filling cup, and the guide block is sleeved on the outer circumference of the blocking rod; a mounting block is provided at the top inside the liquid filling cup, the mounting block is arranged around the outer circumference of the blocking rod and is located below the mounting hole, a limiting block is formed on the outer circumference of the blocking rod, the limiting block is located in the mounting hole, the top of the limiting block is abutted against the bottom end of the guide block, the outer diameter of the limiting block is smaller than the inner diameter of the mounting block, a connecting block is provided in the bottom end of the mounting block, the connecting block is sleeved on the outer circumference of the blocking rod, an elastic member is provided between the connecting block and the limiting block, one end of the elastic member is connected to the bottom end of the limiting block, and the other end of the elastic member is connected to the top of the connecting block.

7. The liquid injection mechanism according to claim 6, characterized in that: The cleaning assembly also includes a pressure block and upper and lower cylinders. The top of the first liquid injection plate is provided with a bracket on one side of the liquid injection cup. The upper and lower cylinders are arranged on the bracket. The pressure block is located below the upper and lower cylinders and above the blocking rod. The pressure block is connected to the end of the output shaft of the upper and lower cylinders. The upper and lower cylinders are used to drive the pressure block to move up and down.

8. The liquid injection mechanism according to claim 1, characterized in that: A vent connector is provided at the top of the liquid injection cup, and the vent connector is communicated with the liquid injection cavity.

9. The liquid injection mechanism according to claim 1, characterized in that: The injection assembly also includes a second injection plate, which is located above the first injection plate. The injection lifting drive component includes an injection lifting cylinder, which is arranged at the bottom end of the first injection plate. The end of the output shaft of the injection lifting cylinder passes through the second through hole of the first injection plate and is connected to the bottom end of the second injection plate.

10. The liquid injection mechanism according to claim 1, characterized in that: It also includes a jig assembly, which includes a translational linear module and an injection jig, one end of the translational linear module is located below the injection assembly, the injection jig is arranged at the top of the translational linear module and is located below the injection nozzle, the top of the injection jig has a placement groove for placing batteries, and the translational linear module is used to drive the injection jig to move away from or close to the injection nozzle.

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