Battery liquid injection and formation production line and method

Abstract

The invention discloses a battery liquid injection and formation production line and method, the battery liquid injection and formation production line comprises a battery liquid injection device, a standing device, a battery formation device and a liquid supplementing device, the battery liquid injection device is located on the right of the standing device, the battery formation device is located in front of the standing device, and the liquid supplementing device is located in front of the battery formation device; the battery liquid injection equipment is used for performing first liquid injection on the battery, putting the battery subjected to first liquid injection into a liquid injection capsule, performing standing treatment on the battery in the liquid injection capsule, and performing second liquid injection on the battery in the liquid injection capsule after the battery in the liquid injection capsule is subjected to standing treatment; the standing equipment is used for carrying out standing treatment on the battery in the liquid injection capsule after carrying out secondary liquid injection on the battery in the liquid injection capsule through the battery liquid injection equipment; and the battery formation equipment is used for performing formation treatment on the battery in the formation capsule. The production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production equipment, and specifically relates to a battery injection and formation production line and method. Background Art

[0002] The battery injection and formation line technology is a new battery manufacturing process, and its main background lies in improving the energy density, safety, and production efficiency of batteries.

[0003] Currently, in the process of battery production, after the battery is assembled, it usually still needs to be subjected to processes such as injection, standing, formation, and replenishment, and finally a finished battery is obtained. By injecting electrolyte into the battery and performing a standing treatment on the battery after injecting the electrolyte into the battery, the electrolyte can fully infiltrate the inside of the battery cell. Then, by performing a formation treatment on the battery, a chemical reaction can occur between the electrode material of the cell and the electrolyte at the solid-liquid two-phase interface, thereby forming a passivation film layer (i.e., a solid electrolyte interface film, abbreviated as SEI film) covering the surface of the electrode material. This passivation film layer can make the battery have higher energy density and safety performance. In the prior art, the injection, standing, formation, and replenishment processes of the battery are respectively completed by the injection equipment in the injection workshop, the standing equipment in the standing workshop, the formation equipment in the formation workshop, and the replenishment equipment in the replenishment workshop. Transfers are required between each process, which consumes a large amount of time, increases production costs, and reduces production efficiency. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a battery injection and formation production line and method, which reduces production costs and improves production efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] The first aspect of the present invention provides a battery injection and formation production line, including a battery injection device, a standing device, a battery formation device, and a replenishment device. The battery injection device is located to the right of the standing device, the battery formation device is located in front of the standing device, and the replenishment device is located in front of the battery formation device. The battery injection device is used to perform the first injection on the battery, place the battery after the first injection into an injection capsule, perform a standing treatment on the battery in the injection capsule, and perform the second injection on the battery in the injection capsule after performing the standing treatment on the battery in the injection capsule. The standing device is used to perform a standing treatment on the battery in the injection capsule after the second injection on the battery in the injection capsule is performed by the battery injection device. The battery formation device is used to perform a formation treatment on the battery in the formation capsule. The replenishment device is used to replenish the battery after the formation treatment.

[0007] The second aspect of the present invention provides a battery liquid injection and formation production method, including the following steps: performing the first liquid injection on the battery through a battery liquid injection device, placing the battery after the first liquid injection into an injection capsule, performing a static treatment on the battery in the injection capsule, and performing the second liquid injection on the battery in the injection capsule after the static treatment of the battery in the injection capsule; after performing the second liquid injection on the battery in the injection capsule through the battery liquid injection device, performing a static treatment on the battery in the injection capsule through a static device; after performing the static treatment on the battery in the injection capsule through the static device, first taking out the battery from the injection capsule, and then putting the taken-out battery into a formation capsule; performing a formation treatment on the battery in the formation capsule through a battery formation device; after performing the formation treatment on the battery in the formation capsule through the battery formation device, taking out the battery from the formation capsule; and performing a supplementary liquid injection on the battery taken out from the formation capsule through a supplementary liquid injection device.

[0008] The beneficial effects of the present invention are as follows: By providing the battery liquid injection device, static device, battery formation device, and supplementary liquid injection device, the first liquid injection can be performed on the battery through the battery liquid injection device, the battery after the first liquid injection can be placed into the injection capsule, the battery in the injection capsule can be statically treated, and the second liquid injection can be performed on the battery in the injection capsule. After the second liquid injection on the battery in the injection capsule through the battery liquid injection device, the battery in the injection capsule can be statically treated through the static device. After the static treatment of the battery in the injection capsule through the static device, the battery can be taken out from the injection capsule and then put into the formation capsule. The battery can be formed through the battery formation device. After the formation treatment of the battery in the formation capsule through the battery formation device, the battery can be taken out from the formation capsule. The supplementary liquid injection can be performed on the battery after the formation treatment through the supplementary liquid injection device. Compared with the prior art, the liquid injection, static treatment, formation, and supplementary liquid injection of the battery can be carried out on the same production line, and there is no need for transfer operations between each process, which does not consume a large amount of time, reduces the production cost, and improves the production efficiency. Description of the Drawings

[0009] The present invention will be further described below in conjunction with the drawings and embodiments.

[0010] Figure 1 is a schematic plan view of a battery liquid injection and formation production line provided by an embodiment of the present invention;

[0011] Figure 2 is Figure 1 a schematic plan view of the battery liquid injection device of the battery liquid injection and formation production line shown;

[0012] Figure 3 is Figure 2 a schematic structural view of the first liquid injection mechanism of the first liquid injection device of the battery liquid injection device shown;

[0013] Figure 4 , Figure 5 is Figure 3Schematic diagram of the liquid injection assembly of the first liquid injection mechanism shown;

[0014] Figure 6 is Figure 2 Schematic diagram of the liquid injection frame, liquid injection battery placing manipulator, liquid injection cup picking manipulator, and first liquid injection capsule pulling belt of the first liquid injection device shown;

[0015] Figure 7 、 Figure 8 is Figure 6 Schematic diagram of the liquid injection battery placing manipulator shown;

[0016] Figure 9 、 Figure 10 is Figure 6 Schematic diagram of the liquid injection cup picking manipulator shown;

[0017] Figure 11 Schematic diagram of the liquid injection capsule;

[0018] Figure 12 Cross-sectional view schematic diagram of the liquid injection capsule and the battery;

[0019] Figure 13 is Figure 2 Schematic diagram of the structure of the first static device of the battery liquid injection equipment shown;

[0020] Figure 14 is Figure 13 Schematic diagram of the static cavity, static auxiliary power-on mechanism, and static positive and negative pressure circulation mechanism of the first static device shown;

[0021] Figure 15 is Figure 14 Schematic diagram of the first static support plate, second static support plate, and static auxiliary power-on mechanism shown;

[0022] Figure 16 is Figure 14 Schematic diagram of the static positive and negative pressure circulation mechanism shown;

[0023] Figure 17 is Figure 2 Schematic diagram of the structure of the second liquid injection mechanism of the second liquid injection device of the battery liquid injection equipment shown;

[0024] Figure 18 is Figure 1 Planar schematic diagram of the formation transfer equipment, formation capsule conveyor line, and battery formation equipment of the battery liquid injection and formation production line shown;

[0025] Figure 19 is Figure 18 Schematic diagram of the battery formation equipment shown;

[0026] Figure 20 isFigure 19 Schematic structural diagram of the formation cavity and formation mechanism of the battery formation equipment shown;

[0027] Figure 21 is Figure 20 Schematic structural diagram of the first formation support plate, second formation support plate, lower formation auxiliary power-on component and lower charging probe shown;

[0028] Figure 22 is Figure 20 Schematic structural diagram of the formation lifting component, upper formation auxiliary power-on component and upper charging probe shown;

[0029] Figure 23 is Figure 20 Explosion schematic diagram of the formation lifting component, upper formation auxiliary power-on component and upper charging probe shown;

[0030] Figure 24 Schematic structural diagram of the formation capsule;

[0031] Figure 25 Cross-sectional schematic diagram of the formation capsule and the battery. Detailed implementation manners

[0032] The concept, specific structure and technical effects of the present invention 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 invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer only 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 invention can be combined interactively without conflicting with each other.

[0033] Please refer to Figure 1, A battery injection and formation production line provided by an embodiment of the present invention includes a feeding conveyor 10, a battery injection device, a standing device 80, a standing transfer device 100, an L-shaped intermediate conveyor 110, a formation transfer device 120, a formation capsule conveyor 130, a battery formation device 140, a liquid supplement device 160, and a discharging conveyor 170. The standing transfer device 100, the standing device 80, and the battery injection device are arranged in sequence from left to right. The battery formation device 140 is located in front of the standing device 80. The formation transfer device 120, the liquid supplement device 160, and the discharging conveyor 170 are all located in front of the battery formation device 140. The intermediate conveyor 110 is located between the standing transfer device 100 and the formation transfer device 120. The formation capsule conveyor 130 is located between the formation transfer device 120 and the battery formation device 140. The liquid supplement device 160 and the discharging conveyor 170 are sequentially located to the right of the formation transfer device 120. The feeding conveyor 10 is used to convey the battery 400 at the feeding station to the battery injection device. The battery injection device is used to perform the first injection on the battery 400, put the battery 400 after the first injection into the injection capsule 500, perform a standing treatment on the battery 400 in the injection capsule 500, and perform the second injection on the battery 400 in the injection capsule 500. The standing device 80 is used to perform a standing treatment on the battery 400 in the injection capsule 500 after the second injection on the battery 400 in the injection capsule 500 is performed by the battery injection device. The standing transfer device 100 is used to take out the battery 400 from the injection capsule 500 after the standing treatment on the battery 400 in the injection capsule 500 is performed by the standing device 80 and transfer the taken-out battery 400 to the intermediate conveyor 110. The intermediate conveyor 110 is used to convey the battery 400 taken out from the injection capsule 500 to the formation transfer device 120. The formation transfer device 120 is used to put the battery 400 into the formation capsule 600 and take out the battery 400 from the formation capsule 600. The formation capsule conveyor 130 is used to convey the formation capsule 600 to the formation transfer device 120, convey the formation capsule 600 and the battery 400 in the formation capsule 600 to the battery formation device 140, and convey the formation capsule 600 and the battery 400 in the formation capsule 600 to the formation transfer device 120. The battery formation device 140 is used to perform a formation treatment on the battery 400 in the formation capsule 600. The liquid supplement device 160 is used to supplement the liquid to the battery 400 after the formation treatment taken out from the formation capsule 600. The discharging conveyor 170 is used to convey the battery 400 after the liquid supplement to the discharging station.

[0034] As Figure 11 and Figure 12As shown in the figure, the liquid injection capsule 500 includes a liquid injection lower cavity 5001 and a liquid injection buckle cup 5002 capped on the top end of the liquid injection lower cavity 5001. The liquid injection lower cavity 5001 has an inner cavity. A heating plate is provided on the inner wall of the inner cavity of the liquid injection lower cavity 5001. A negative probe assembly and a positive probe assembly are provided at the bottom end of the liquid injection lower cavity 5001. The negative probe assembly of the liquid injection capsule 500 includes four negative probes. The positive probe assembly of the liquid injection capsule 500 includes four positive probes. The negative probes and positive probes of the liquid injection capsule 500 are electrically connected to the negative and positive poles of the heating plate of the liquid injection capsule 500 respectively. A liquid injection port 5006 and an air inlet 5003 are provided at the top end of the liquid injection buckle cup 5002. The liquid injection buckle cup 5002 has a first inner cavity and a second inner cavity located below the first inner cavity. The liquid injection port 5006 and the air inlet 5003 are both communicated with the first inner cavity. The second inner cavity is communicated with the inner cavity of the liquid injection lower cavity 5001. There are two air inlets 5003. A liquid injection nozzle 5005 is provided at the top of the second inner cavity. The liquid injection nozzle 5005 is communicated with the first inner cavity and the second inner cavity.

[0035] As Figure 24 and Figure 25 shown in the figure, the formation capsule 600 includes a formation lower cavity 6001 and a formation buckle cup 6002 capped on the top end of the formation lower cavity 6001. The formation lower cavity 6001 has an inner cavity and a mounting cavity located below the inner cavity. A negative terminal 6008 and a negative probe assembly are provided at the bottom end of the formation lower cavity 6001. The negative probe assembly of the formation capsule 600 is three. The negative probe assembly of the formation capsule 600 includes negative probes. There are four negative probes. A negative formation probe 6009 is provided at the bottom of the inner cavity of the formation lower cavity 6001. The negative terminal 6008 is electrically connected to the negative formation probe 6009 through a wire. A heating plate is provided on the inner wall of the inner cavity of the formation lower cavity 6001. The negative probe of the formation capsule 600 is electrically connected to the negative pole of the heating plate of the formation capsule 600. The formation buckle cup 6002 has a first chamber and a second chamber located above the first chamber. The first chamber is communicated with the inner cavity of the formation lower cavity 6001. A positive terminal 6004, a positive probe assembly and a hollow airtightness measuring rod 6005 are provided at the top end of the formation buckle cup 6002. The lower end of the airtightness measuring rod 6005 passes through the second chamber and extends into the first chamber. The positive probe assembly of the formation capsule 600 is close to the airtightness measuring rod 6005. The positive probe assembly of the formation capsule 600 includes four positive probes 6006. The airtightness measuring rod 6005 and the positive terminal 6004 are arranged relatively left and right. A positive formation probe 6007 is provided at the top of the first chamber. The positive terminal 6004 is electrically connected to the positive formation probe 6007 through a wire. The positive probe 6006 is electrically connected to the positive pole of the heating plate of the formation capsule 600 through a wire.

[0036] The battery liquid injection device includes a first liquid injection device 20, a first static device 40, and a second liquid injection device 50. The first liquid injection device 20 is used to perform the first liquid injection on the battery 400 and place the battery 400 after the first liquid injection into the liquid injection capsule 500. The first static device 40 is used to perform a static treatment on the battery 400 in the liquid injection capsule 500. The second liquid injection device 50 is used to perform the second liquid injection on the battery 400 in the liquid injection capsule 500 after the static treatment on the battery 400 in the liquid injection capsule 500.

[0037] Combined with Figure 2 As shown, the first liquid injection device 20 includes a first liquid injection mechanism 23, a liquid injection battery placing manipulator 22, a liquid injection cup taking and covering manipulator 26, and a first liquid injection capsule pulling belt 27. The first liquid injection mechanism 23 is arranged in the liquid injection frame 221. The liquid injection battery placing manipulator 22 is arranged on the liquid injection frame 221 and above the first liquid injection mechanism 23. The liquid injection cup taking and covering manipulator 26 is arranged on the liquid injection frame 221. The liquid injection battery placing manipulator 22 is located to the right of the liquid injection cup taking and covering manipulator 26. The first liquid injection capsule pulling belt 27 is arranged in the liquid injection frame 221, and a part of the first liquid injection capsule pulling belt 27 protrudes from the rear side of the liquid injection frame 221. The first liquid injection capsule pulling belt 27 is located below the liquid injection cup taking and covering manipulator 26. The first liquid injection mechanism 23 is used to perform the first liquid injection on the battery 400. The liquid injection battery placing manipulator 22 is used to place the battery 400 after the first liquid injection into the inner cavity of the liquid injection lower cavity 5001 of the liquid injection capsule 500. The liquid injection cup taking and covering manipulator 26 is used to remove the liquid injection cup 5002 of the liquid injection capsule 500 from the top of the liquid injection lower cavity 5001 of the liquid injection capsule 500 and to cover the liquid injection cup 5002 of the liquid injection capsule 500 on the top of the liquid injection lower cavity 5001 of the liquid injection capsule 500. The first liquid injection capsule pulling belt 27 is an existing roller chain conveyor belt, and the first liquid injection capsule pulling belt 27 is used to convey the liquid injection capsule 500 to the liquid injection cup taking and covering manipulator 26 and to convey the liquid injection capsule 500 and the battery 400 in the liquid injection capsule 500 to the first static device 40.

[0038] Combined with Figures 3 to 5As shown in the figure, the first liquid injection mechanism 23 includes a first liquid injection frame 2311, a second liquid injection frame 2312, a liquid injection translation module 232, a liquid injection fixture 233, and a liquid injection assembly 234. The first liquid injection frame 2311 is located behind the second liquid injection frame 2312, and a part of the first liquid injection frame 2311 extends into the second liquid injection frame 2312. The liquid injection translation module 232 is arranged at the top of the first liquid injection frame 2311, and a part of the liquid injection translation module 232 is located within the second liquid injection frame 2312. The liquid injection fixture 233 is arranged at the top of the liquid injection translation module 232. The liquid injection translation module 232 is used to drive the liquid injection fixture 233 to move back and forth. The top of the liquid injection fixture 233 has a placement cavity for placing the battery 400. After the battery 400 is placed in the placement cavity, a part of the battery 400 protrudes from the top of the liquid injection fixture 233.

[0039] The liquid injection assembly 234 includes a first liquid injection mounting plate 2341, a first liquid injection cup 2342, a first liquid injection lifting cylinder 2346, and a liquid injection fixing plate 2345 located above the first liquid injection mounting plate 2341. The first liquid injection mounting plate 2341 is located above the liquid injection fixture 233 and within the second liquid injection frame 2312. A ring portion is formed on the outer periphery of the first liquid injection cup 2342. The first liquid injection cup 2342 is arranged at the top of the first liquid injection mounting plate 2341 through its ring portion. The bottom end of the first liquid injection cup 2342 passes through the first through hole of the first liquid injection mounting plate 2341 and is provided with a first liquid injection nozzle 2344. The first liquid injection nozzle 2344 is located between the first liquid injection mounting plate 2341 and the liquid injection fixture 233 and within the second liquid injection frame 2312. The first liquid injection nozzle 2344 is in communication with the inside of the first liquid injection cup 2342. A first liquid injection joint 2343 and a ventilation joint 2347 are provided at the top end of the first liquid injection cup 2342. Both the first liquid injection joint 2343 and the ventilation joint 2347 are in communication with the inside of the first liquid injection cup 2342. The first liquid injection joint 2343 is used to be connected to a liquid supply device through a liquid injection pipeline. The ventilation joint 2347 is used to be connected to a vacuum device through a vacuum pipeline. The vacuum device is, for example, a vacuum pump that can be used for both air extraction and air inflation. The first liquid injection lifting cylinder 2346 is arranged at the bottom end of the first liquid injection mounting plate 2341. The output end of the first liquid injection lifting cylinder 2346 passes through the second through hole of the first liquid injection mounting plate 2341 and is connected to the bottom end of the liquid injection fixing plate 2345. The liquid injection fixing plate 2345 is arranged at the top of the second liquid injection frame 2312. The telescopic movement of the output end of the first liquid injection lifting cylinder 2346 can drive the first liquid injection mounting plate 2341 to move up and down, thereby driving the first liquid injection cup 2342, the first liquid injection nozzle 2344, the first liquid injection joint 2343, and the ventilation joint 2347 to move up and down.

[0040] In actual application, first, the liquid injection translation module 232 drives the liquid injection fixture 233 to move backward to a predetermined position so that the liquid injection fixture 233 is located behind the second liquid injection rack 2312. After placing the battery 400 conveyed by the feeding conveyor line 10 in the placement cavity of the liquid injection fixture 233, the liquid injection translation module 232 drives the liquid injection fixture 233 to move forward to the initial position, so as to drive the battery 400 to move forward to the lower part of the liquid injection assembly 234. Then, the first liquid injection lifting cylinder 2346 drives the first liquid injection mounting plate 2341 to move downward until the end of the first liquid injection nozzle 2344 is matched with the liquid injection port of the battery 400. Then, the inside of the battery 400 is evacuated through the vacuum device, the air vent joint 2347, the first liquid injection cup 2342, and the first liquid injection nozzle 2344, so that a negative pressure is generated inside the battery 400. The negative pressure is, for example, -60 Kpa (kilopascals). Then, the liquid supply device injects electrolyte into the inside of the battery 400 through the first liquid injection joint 2343, the first liquid injection cup 2342, and the first liquid injection nozzle 2344. After that, it is left standing for 2 to 3 minutes, and then the inside of the battery 400 is restored to normal pressure. Then, the inside of the battery 400 is evacuated through the vacuum device, the air vent joint 2347, the first liquid injection cup 2342, and the first liquid injection nozzle 2344 to generate a negative pressure inside the battery 400, and the negative pressure is maintained for 5 to 7 s (seconds). Then, nitrogen is introduced into the inside of the battery 400 through the vacuum device, the air vent joint 2347, the first liquid injection cup 2342, and the first liquid injection nozzle 2344 to generate a positive pressure inside the battery 400, and the positive pressure is maintained for 115 to 120 s. Then, the negative pressure operation and the positive pressure operation are cycled once, so that the electrolyte injected for the first time can fully infiltrate the battery core of the battery 400, thus realizing the first liquid injection of the battery 400. In this embodiment, there are three liquid injection translation modules 232, three liquid injection fixtures 233, and three liquid injection assemblies 234 respectively. The placement cavity of each liquid injection fixture 233 is three. Correspondingly, the first liquid injection cup 2342 of each liquid injection assembly 234 is also three. The first liquid injection lifting cylinder 2346 and the liquid injection fixing plate 2345 of each liquid injection assembly 234 are two respectively. Therefore, the present invention can realize the first liquid injection of nine batteries 400 at a time, improving the production efficiency.

[0041] Combined with Figure 2 、 Figures 6 to 10As shown, the liquid injection and battery placing manipulator 22 includes a first transfer plate 225, a second transfer plate 2271, a third transfer plate 2272, a fourth transfer plate 2273, a transfer motor 226, a transfer lifting cylinder 227, two transfer jaw cylinders 228 arranged front and rear relatively, and two transfer jaws 229 arranged front and rear relatively. On both sides of the top end of the liquid injection frame 221, there are two slide rails 223 arranged parallel front and rear. At the bottom end of the first transfer plate 225, there are two first sliders respectively slidingly engaged with the two slide rails 223. Thus, the first transfer plate 225 is slidably arranged on the top end of the liquid injection frame 221 through the two first sliders and the two slide rails 223. The transfer motor 226 is arranged at the top end of the first transfer plate 225. The output end of the transfer motor 226 passes through the through hole of the first transfer plate 225 and is sleeved with a transfer gear 2261. The transfer gear 2261 meshes with the rack 222 on one side of the top end of the liquid injection frame 221. The front slide rail 223 and the rack 222 are close to each other and are arranged parallel front and rear. The second transfer plate 2271 is arranged at the top end of the first transfer plate 225. The transfer lifting cylinder 227 is arranged at the top end of the second transfer plate 2271. The output end of the transfer lifting cylinder 227 passes through the through hole of the second transfer plate 2271 and the through hole 2251 of the first transfer plate 225 and is connected to the top end of the third transfer plate 2272. The fourth transfer plate 2273 is located below the third transfer plate 2272. The fourth transfer plate 2273 and the third transfer plate 2272 are connected by a connecting column 22731. The number of the connecting columns 22731 can be set according to the actual situation. Both of the two transfer jaw cylinders 228 are arranged at the top end of the fourth transfer plate 2273. The output ends of the two transfer jaw cylinders 228 are respectively connected to one end of two L-shaped connecting members 2281. The two connecting members 2281 are arranged front and rear relatively. The two transfer jaws 229 are respectively located below the fourth transfer plate 2273. The other ends of the two connecting members 2281 are respectively connected to the top ends of the two transfer jaws 229. The two transfer jaw cylinders 228 are used to drive the two connecting members 2281 to approach or separate from each other, so as to drive the two transfer jaws 229 to approach or separate from each other to clamp or release the battery 400. The third transfer plate 2272, the fourth transfer plate 2273, the two transfer jaw cylinders 228, the two connecting members 2281 and the two transfer jaws 229 are all located inside the liquid injection frame 221.The transfer motor 226 is used to drive the rotation of the transfer gear 2261. Under the meshing action of the transfer gear 2261 and the rack 222, the first transfer plate 225 can be driven to move left and right at the top of the liquid injection frame 221, so as to drive the second transfer plate 2271, the third transfer plate 2272, the fourth transfer plate 2273, the transfer motor 226, the transfer lifting cylinder 227, the two transfer jaw cylinders 228, the two connecting pieces 2281 and the two transfer jaws 229 to move left and right. The transfer lifting cylinder 227 is used to drive the third transfer plate 2272 to move up and down, so as to drive the fourth transfer plate 2273, the two transfer jaw cylinders 228, the two connecting pieces 2281 and the two transfer jaws 229 to move up and down.

[0042] The liquid injection cup removing and gripping manipulator 26 includes a first picking and placing mounting plate 261, a second picking and placing mounting plate 262, a picking and placing motor 263, a picking and placing lifting cylinder 264, two picking and placing jaw cylinders 266, and two cup removing and gripping jaws 265 arranged oppositely left and right. At the bottom end of the first picking and placing mounting plate 261, there are two second sliders respectively slidingly engaged with the two slide rails 223. Thus, the first picking and placing mounting plate 261 is slidably arranged at the top end of the liquid injection frame 221 through the two second sliders and the two slide rails 223. The picking and placing motor 263 is arranged at the top end of the first picking and placing mounting plate 261. The output end of the picking and placing motor 263 passes through the through hole of the first picking and placing mounting plate 261 and is sleeved with a picking and placing gear 2631. The picking and placing gear 2631 is engaged with the rack 222 at the top end of the liquid injection frame 221. The picking and placing lifting cylinder 264 is arranged at the bottom end of the first picking and placing mounting plate 261. The second picking and placing mounting plate 261 is located below the picking and placing lifting cylinder 264 and is connected to the output end of the picking and placing lifting cylinder 264. The two picking and placing jaw cylinders 266 are arranged side by side front and back and are both arranged at the bottom end of the second picking and placing mounting plate 262. The two picking and placing jaw cylinders 266 are located between two jaw connecting plates 2651 arranged oppositely left and right. The output ends of the two picking and placing jaw cylinders 266 are respectively connected to the two jaw connecting plates 2651. The two cup removing and gripping jaws 265 are respectively arranged at the bottom ends of the two jaw connecting plates 2651. The two picking and placing jaw cylinders 266 are used to drive the two jaw connecting plates 2651 to approach or separate from each other, so as to drive the two cup removing and gripping jaws 265 to approach or separate from each other, so as to grip or loosen the liquid injection cup 5002 of the liquid injection capsule 500. The second picking and placing mounting plate 262, the two picking and placing jaw cylinders 266, the two jaw connecting plates 2651, and the two cup removing and gripping jaws 265 are located inside the liquid injection frame 221. The picking and placing motor 263 is used to drive the picking and placing gear 2631 to rotate. Under the action of the meshing of the picking and placing gear 263 and the rack 222, the first picking and placing mounting plate 261 can be driven to move left and right at the top end of the liquid injection frame 221, so as to drive the second picking and placing mounting plate 262, the picking and placing motor 263, the picking and placing lifting cylinder 264, the two picking and placing jaw cylinders 266, the two jaw connecting plates 2651, and the two cup removing and gripping jaws 265 to move left and right. The picking and placing lifting cylinder 264 is used to drive the second picking and placing mounting plate 262 to move up and down, so as to drive the two picking and placing jaw cylinders 266, the two jaw connecting plates 2651, and the two cup removing and gripping jaws 265 to move up and down. In this embodiment, there are four cup removing and gripping jaws 265. Two cup removing and gripping jaws 265 are respectively arranged at intervals at the bottom end of each jaw connecting plate 2651. Therefore, the liquid injection cup removing and gripping manipulator 26 of the present invention can realize removing the liquid injection cups 5002 of two liquid injection capsules 500 respectively from the top ends of the liquid injection lower cavities 5001 of the two liquid injection capsules 500 at one time, and can also realize covering the liquid injection cups 5002 of the two liquid injection capsules 500 respectively on the top ends of the liquid injection lower cavities 5001 of the two liquid injection capsules 500.

[0043] In actual application, after the first liquid injection of the battery 400 is completed, first drive the liquid injection jig 233 and the battery 400 to move backward through the liquid injection translation module 232, so that the battery 400 is located behind the second liquid injection rack 2312. Then drive the transfer gear 2631 to rotate through the transfer motor 226, so as to drive the two transfer jaws 229 to move to the upper part of the battery 400 to the right. Then drive the two transfer jaws 229 to move downward through the transfer lifting cylinder 227. Then drive the two transfer jaws 229 to approach each other through the two transfer jaw cylinders 228 to clamp the battery 400. Then drive the two transfer jaws 229 and the battery 400 to move upward to the initial position through the transfer lifting cylinder 227. Then drive the transfer gear 2261 to rotate through the transfer motor 226, so as to drive the two transfer jaws 229 and the battery 400 to move to the left. At the same time, convey the liquid injection capsule 500 to the liquid injection cup picking and buckling manipulator 26 through the first liquid injection capsule pulling belt 27. Then drive the two cup picking and buckling jaws 265 to move downward through the picking and placing lifting cylinder 264. Then drive the two cup picking and buckling jaws 265 to approach each other through the two picking and placing jaw cylinders 266 to clamp the liquid injection cup 5002 of the liquid injection capsule 500. Then drive the two cup picking and buckling jaws 265 and the liquid injection cup 5002 of the liquid injection capsule 500 to move upward through the picking and placing lifting cylinder 264. Then drive the picking and placing gear 2631 to rotate through the picking and placing motor 263, so as to drive the two cup picking and buckling jaws 265 and the liquid injection cup 5002 of the liquid injection capsule 500 to move to the left, so that the liquid injection cup 5002 of the liquid injection capsule 500 is located on the left side of the liquid injection lower cavity 5001 of the liquid injection capsule 500. In this way, the liquid injection cup 5002 of the liquid injection capsule 500 is removed from the top of the liquid injection lower cavity 5001 of the liquid injection capsule 500. When the battery 400 moves to the upper part of the liquid injection lower cavity 5001 of the liquid injection capsule 500 to the left, drive the two transfer jaws 229 and the battery 400 to move downward through the transfer lifting cylinder 227, so as to place the battery 400 into the inner cavity of the liquid injection lower cavity 5001 of the liquid injection capsule 500. At this time, a part of the battery 400 protrudes from the top of the liquid injection lower cavity 5001 of the liquid injection capsule 500. Then drive the two transfer jaws 229 to move away from each other through the two transfer jaw cylinders 228 to release the battery 400. Then drive the two transfer jaws 229 to move upward through the transfer lifting cylinder 227. Then drive the transfer gear 2261 to rotate through the transfer motor 226, so as to drive the two transfer jaws 229 to move to the right.Then, the pick-and-place machine 263 drives the two pick-up cup jaws 265 and the liquid injection cup 5002 of the liquid injection capsule 500 to move to the right, so that the liquid injection cup 5002 of the liquid injection capsule 500 is located above the liquid injection lower cavity 5001 of the liquid injection capsule 500. Then, the pick-and-place lifting cylinder 264 drives the two pick-up cup jaws 265 and the liquid injection cup 5002 of the liquid injection capsule 500 to move downward, so as to cover the liquid injection cup 5002 of the liquid injection capsule 500 on the top end of the liquid injection lower cavity 5001 of the liquid injection capsule 500. At this time, the part of the battery 400 protruding from the top end of the liquid injection lower cavity 5001 of the liquid injection capsule 500 is located in the second inner cavity of the liquid injection cup 5002 of the liquid injection capsule 500, and the liquid injection port of the battery 400 is matched with the lower end of the liquid injection nozzle 5005 of the liquid injection cup 5002, as shown in the figure. Figure 12 As shown. Then, the two pick-and-place jaw cylinders 266 drive the two pick-up cup jaws 265 to move away from each other to release the liquid injection cup 5002 of the liquid injection capsule 500. Then, the pick-and-place lifting cylinder 264 drives the two pick-up cup jaws 265 to move upward, so that the battery 400 after the first liquid injection is put into the liquid injection capsule 500. Then, the first liquid injection capsule strap 27 transports the liquid injection capsule 500 and the battery 400 in the liquid injection capsule 500 to the first static device 40.

[0044] Combined with Figure 2 、 Figures 13 to 16 As shown, the first static device 40 includes a static storage library 41. In this embodiment, there are two static storage libraries 41, and the two static storage libraries 41 are arranged opposite to each other front and back. The static storage library 41 includes a static cavity 411 for placing the liquid injection capsule 500 and the battery 400 in the liquid injection capsule 500. The static cavity 411 is multiple, for example, nine, and the multiple static cavities 411 are stacked in sequence from bottom to top. The number of the static cavities 411 can be set according to the actual situation. The static cavity 411 is provided with a static auxiliary power-on mechanism and a static positive and negative pressure circulation mechanism.

[0045] At the bottom inside the static chamber 411, there is a first static support plate 421. At the top of the first static support plate 421, there is a second static support plate 422. At the top of the second static support plate 422, there is a placement groove 4221 for placing the liquid injection capsule 500 and the battery 400 inside the liquid injection capsule 500. The static auxiliary power-on mechanism includes a first static probe group and a second static probe group. In actual application, the first static probe group corresponds to the positive probe assembly of the liquid injection capsule 500, and the second static probe group corresponds to the negative probe assembly of the liquid injection capsule 500. The first static probe group and the second static probe group are arranged at intervals along the length direction of the second static support plate 422. At the top of the first static support plate 421, there are a first groove and a second groove. At the bottom of the first groove, there is a first hole position, and at the bottom of the second groove, there is a second hole position. At the bottom of the placement groove 4221, there are a first avoidance hole 4222 corresponding to the first groove and a second avoidance hole 4223 corresponding to the second groove. The first static probe group includes a first probe sleeve 4231 and a first static probe 4232 penetrating through the first probe sleeve 4231. The first probe sleeve 4231 is arranged in the first groove. The upper end of the first static probe 4232 passes through the first avoidance hole 4222 and is located inside the placement groove 4221. At the bottom inside the static chamber 411, there is a lower empty space. The lower end of the first static probe 4232 passes through the first hole position and is located inside the lower empty space of the static chamber 411. The second static probe group includes a second probe sleeve 4241 and a second static probe 4242 penetrating through the second probe sleeve 4241. The second probe sleeve 4241 is arranged in the second groove. The upper end of the second static probe 4242 passes through the second avoidance hole 4223 and is located inside the placement groove 4221. The lower end of the second static probe 4242 passes through the second hole position and is located inside the lower empty space of the static chamber 411. In actual application, the first static probe 4232 corresponds to the positive probes of the positive probe assembly of the liquid injection capsule 500. Since there are four positive probes, there are also four first static probes 4232. The four first static probes 4232 are arranged at intervals along the length direction of the first probe sleeve 4231. The second static probe 4242 corresponds to the negative probes of the negative probe assembly of the liquid injection capsule 500. Since there are four negative probes, there are also four second static probes 4242. The four second static probes 4242 are arranged at intervals along the length direction of the second probe sleeve 4241. The upper end of the first static probe 4232 is used to dock with the corresponding positive probe to achieve electrical connection with the corresponding positive probe. The lower end of the first static probe 4232 is used to be electrically connected to the positive pole of the power supply through a first wire. The upper end of the second static probe 4242 is used to dock with the corresponding negative probe to achieve electrical connection with the corresponding negative probe. The lower end of the second static probe 4242 is used to be electrically connected to the negative pole of the power supply through a second wire.

[0046] The static positive and negative pressure circulation mechanism includes a first static mounting plate 431, a second static mounting plate 433, a static lifting cylinder 432, an air vent block 435, and a plug block 434. The top of the static cavity 411 has an upper vacancy that communicates with the inside of the static cavity 411, and the first static mounting plate 431 is arranged in the upper vacancy of the static cavity 411. The second static mounting plate 433 is located below the first static mounting plate 431 and inside the static cavity 411. A static groove is provided at the top of the first static mounting plate 431. The static lifting cylinder 432 is arranged at the bottom of the static groove and part of the static lifting cylinder 432 protrudes from the top of the first static mounting plate 431. A first through hole is provided at the bottom of the static groove. The output end of the static lifting cylinder 432 passes through the first through hole of the first static mounting plate 431 and is connected to the top of the second static mounting plate 433. The static lifting cylinder 432 is used to drive the second static mounting plate 433 to move up and down. The air vent block 435 has a hollow structure. The air vent block 435 and the plug block 434 are both arranged at the bottom end of the second static mounting plate 433. In actual application, the air vent block 435 and the plug block 434 respectively correspond to the air inlet 5003 and the liquid injection port 5006 of the liquid injection capsule 500. The end of the air vent block 435 is used to cooperate with the air inlet 5003 of the liquid injection capsule 500, and the end of the plug block 434 is used to cooperate with the liquid injection port 5006 of the liquid injection capsule 500 to block the liquid injection port 5006 of the liquid injection capsule 500, so that the first inner cavity of the liquid injection cup 5002 of the liquid injection capsule 500 is not communicated with the external environment. A vacuum extraction hole position corresponding to the air vent block 435 is provided at the top of the second static mounting plate 433. The vacuum extraction hole position is communicated with the inside of the air vent block 435. A static joint 4351 is provided at the vacuum extraction hole position. The static joint 4351 is located between the second static mounting plate 433 and the first static mounting plate 431 and is communicated with the vacuum extraction hole position. The static joint 4351 is used to be connected to a vacuum device through a vacuum pipeline. The vacuum device is, for example, a vacuum pump that can be used for both air extraction and air inflation. The up and down movement of the second static mounting plate 433 can drive the air vent block 435, the plug block 434, and the static joint 4351 to move up and down. There are two air inlets 5003 of the liquid injection capsule 500, so the air vent block 435 and the static joint 4351 are also two respectively. The plug block 434 is located between the two air vent blocks 435.

[0047] In this embodiment, there are four first static support plates 421 and four second static support plates 422 at the bottom of each static cavity 411. Two injection capsules 500 can be placed in each placement groove 4221. There are two static auxiliary power-on mechanisms on each of the first static support plate 421 and the second static support plate 422. Therefore, eight injection capsules 500 can be placed in each static cavity 411. There are two static positive and negative pressure circulation mechanisms in each static cavity 411. Therefore, each static cavity 411 of the present invention can perform static treatment on the batteries 400 in eight injection capsules 500 at a time. Since there are multiple static cavities 411, static treatment on multiple batteries 400 can be achieved at a time, improving production efficiency. There are two static lifting cylinders 432 and two static tanks in each positive and negative pressure circulation mechanism.

[0048] In actual application, after the liquid injection capsule 500 and the battery 400 inside the liquid injection capsule 500 are transported to the first static device 40 through the first liquid injection capsule pulling belt 27, the liquid injection capsule 500 and the battery 400 inside the liquid injection capsule 500 are carried into the static cavity 411 by a stacker and placed at the bottom of the placement groove 4221. Then, the upper ends of the first static probe 4232 and the second static probe 4242 are respectively docked with the corresponding positive electrode probe and the corresponding negative electrode probe of the liquid injection capsule 500. Thus, the first static probe 4232 is electrically connected to the corresponding positive electrode probe, and the second static probe 4242 is electrically connected to the corresponding negative electrode probe. In this way, the power supply can be electrically connected to the positive electrode of the heating plate of the liquid injection capsule 500 through the first static probe 4232 and the positive electrode probe of the liquid injection capsule 500, and can be electrically connected to the negative electrode of the heating plate of the liquid injection capsule 500 through the second static probe 4242 and the negative electrode probe of the liquid injection capsule 500. In this way, the heating plate of the liquid injection capsule 500 can be powered on through the power supply. After the heating plate is powered on and heated, the battery 400 inside the liquid injection capsule 500 can be heated. The heating temperature is, for example, 45°C. Then, the second static mounting plate 433 is driven to move downward by the static lifting cylinder 432, so that the ventilation block 435 and the plug block 434 can be driven to move downward until the end of the ventilation block 435 is matched with the air inlet 5003 of the liquid injection capsule 500, and the end of the plug block 434 is matched with the liquid injection port 5006 of the liquid injection capsule 500. Then, the vacuum device alternately evacuates the first inner cavity of the liquid injection buckle cup 5002 of the liquid injection capsule 500 and introduces nitrogen through the static joint 4351, the vacuum extraction hole position, and the ventilation block 435. Since the lower end of the liquid injection nozzle 5005 of the liquid injection capsule 500 is matched with the liquid injection port of the battery 400, the inside of the battery 400 inside the liquid injection capsule 500 can be alternately evacuated and nitrogen can be introduced through the first inner cavity of the liquid injection buckle cup 5002 of the liquid injection capsule 500 and the liquid injection nozzle 5005 of the liquid injection capsule 5002. Thus, the inside of the battery 400 cell can be alternately infiltrated with the electrolyte and air bubbles can be extracted, realizing the breathing infiltration of the battery 400 at high temperature. In this way, the first static device 40 can perform a high-temperature + positive and negative pressure cyclic static treatment on the battery 400 inside the liquid injection capsule 500. In this way, the electrolyte injected into the battery 400 for the first time can further fully infiltrate the inside of the battery 400 cell, ensuring the quality of the battery 400. The time for the static treatment is, for example, 4 hours.

[0049] Combined with Figure 2 and Figure 17As shown in the figure, the second liquid injection device 50 includes a second liquid injection mechanism 52 and a second liquid injection capsule pulling belt 51. The stationary storage warehouse 41 located at the rear is in front of the second liquid injection mechanism 52. The second liquid injection mechanism 52 is used for secondarily injecting the battery 400 in the liquid injection capsule 500. The second liquid injection capsule pulling belt 51 is an existing roller chain conveyor belt. The second liquid injection capsule pulling belt 51 is located below the second liquid injection mechanism 52. The second liquid injection capsule pulling belt 51 is used for conveying the liquid injection capsule 500 and the battery 400 in the liquid injection capsule 500 to the second liquid injection mechanism 52 and for conveying the liquid injection capsule 500 and the battery 400 in the liquid injection capsule 500 to the stationary device 80 after the battery 400 is secondarily injected.

[0050] The second liquid injection mechanism 52 includes a second liquid injection mounting plate 521, a second liquid injection cup 522, and a second liquid injection lifting cylinder 528. A ring portion is formed on the outer periphery of the second liquid injection cup 522. The second liquid injection cup 522 is arranged at the top end of the second liquid injection mounting plate 521 through its ring portion. The bottom end of the second liquid injection cup 521 passes through the through hole of the second liquid injection mounting plate 521 and is provided with a liquid injection rod 523. A second liquid injection nozzle 524 is provided at the end of the liquid injection rod 523. A second liquid injection joint 525 is provided at the top end of the second liquid injection cup 522. The second liquid injection joint 525 is connected to a liquid injection connecting pipe 526. The liquid injection connecting pipe 256 is provided with a joint 527. The joint 527 is used for connecting to a liquid supply device. The second liquid injection nozzle 524 is internally connected to the inside of the liquid injection rod 523. The inside of the liquid injection rod 523 is internally connected to the inside of the second liquid injection cup 522. The second liquid injection joint 525 is respectively connected to the inside of the second liquid injection cup 522 and the liquid injection connecting pipe 526. The second liquid injection nozzle 524 is used for cooperating with the liquid injection port 5006 of the liquid injection capsule 500. The second liquid injection lifting cylinder 528 is arranged at the bottom end of the liquid injection bottom plate 529. The second liquid injection lifting cylinder 528 is located above the second liquid injection mounting plate 521 and the output end of the second liquid injection lifting cylinder 528 is connected to the top end of the second liquid injection mounting plate 521. The top end of the liquid injection bottom plate 529 is connected to a liquid injection top plate 5292 through a connecting pillar 5291. The liquid injection top plate 5292 is arranged on the secondary liquid injection machine frame. The second liquid injection lifting cylinder 528 is used for driving the second liquid injection mounting plate 521 to move up and down, so as to drive the second liquid injection cup 522, the liquid injection rod 523, the second liquid injection nozzle 524, the second liquid injection joint 525, and the liquid injection connecting pipe 526 to move up and down.

[0051] In actual application, after the liquid injection capsule 500 and the battery 400 inside the liquid injection capsule 500 are removed from the static cavity 411 by the stacker, the liquid injection capsule 500 and the battery 400 inside the liquid injection capsule 500 can be transported to the second liquid injection mechanism through the second liquid injection capsule pulling belt 51. Then, the second liquid injection lifting cylinder 528 drives the second liquid injection mounting plate 521 to move downward, so as to drive the second liquid injection cup 524, the liquid injection rod 523, and the second liquid injection nozzle 524 to move downward until the second liquid injection nozzle 524 is matched with the liquid injection port 5006 of the liquid injection capsule 500. Then, the electrolyte can be injected into the first inner cavity of the liquid injection cup 5002 of the liquid injection capsule 500 through the liquid supply device via the joint 527, the liquid injection connecting pipe 526, the second liquid injection joint 525, the second liquid injection cup 522, the liquid injection rod 523, and the second liquid injection nozzle 524. The electrolyte in the first inner cavity of the liquid injection cup 5002 can enter the inside of the battery 400 through the liquid injection nozzle 5005, so that the second liquid injection of the battery 400 can be realized. After that, it is left static for 2 to 3 minutes, so that the second liquid injection of the battery 400 in the liquid injection capsule 500 is realized. In this embodiment, there are four second liquid injection cups 522. Correspondingly, there are four liquid injection rods 523, second liquid injection nozzles 524, and second liquid injection joints 525 respectively. Thus, the present invention can perform the second liquid injection on the batteries 400 in four liquid injection capsules 500 at one time, improving the production efficiency. There are two second liquid injection lifting cylinders 528. It can be understood that the quantity of each component can be set according to the actual situation.

[0052] The static equipment 80 includes a second static device. The structure of the second static device is the same as that of the first static device 40, and the structure of the second static device will not be elaborated here. Among them, the number and length of the static storage racks 41 of the second static device are different from those of the static storage racks 41 of the first static device 40. The second static device has a total of 20 static storage racks 41, and the 20 static storage racks 41 are divided into four rows, with five static storage racks 41 in each row. The five static storage racks 41 are connected in sequence from left to right. Through the static equipment 80, the battery 400 in the injection capsule 500 can be subjected to high-temperature + positive and negative pressure cyclic static treatment. The static treatment time is, for example, 4 hours, so that the electrolyte injected for the second time can further fully infiltrate the inside of the battery 400 core, ensuring the quality of the battery 400. After the battery 400 in the injection capsule 500 is statically treated by the static equipment 80, the battery 400 in the injection capsule 500 is taken out by the static transfer equipment 100 and the taken-out battery 400 is transferred to the intermediate conveying line 110. The operation of taking out the battery 400 from the injection capsule 500 is opposite to the operation of putting the battery 400 into the injection capsule 500. Specifically, first, the injection cup 5002 of the injection capsule 500 is removed from the top of the injection lower cavity 5001, then the battery 400 is taken out from the inner cavity of the injection lower cavity 5001, and then the injection cup 5002 is covered on the top of the injection lower cavity 5001. Then, the battery 400 is conveyed to the formation transfer equipment 120 through the intermediate conveying line 110. Then, the formation capsule 600 is conveyed to the formation transfer equipment 120 through the formation capsule conveying line 130. Then, the battery 400 is put into the formation capsule 600 through the formation transfer equipment 120. The operation of putting the battery 400 into the formation capsule 600 is the same as the operation of putting the battery 400 into the injection capsule 500. After the battery 400 is put into the formation capsule 600, the negative electrode and the positive electrode of the battery 400 are electrically connected to the negative formation probe 6009 and the positive formation probe 6007 of the formation capsule 600 respectively, as Figure 25 shown. Then, the formation capsule 600 and the battery 400 in the formation capsule 600 are conveyed to the battery formation equipment 80 through the formation capsule conveying line 130.

[0053] Combined with Figures 18 to 23As shown, the battery formation device 140 includes a formation storage library 146. There are two formation storage libraries 146, which are arranged opposite to each other front and back. The formation storage library 146 includes formation units. There are four formation units, and the four formation units are connected in sequence from left to right. The formation unit includes a formation cavity 1461 for placing the formation capsule 600 and the battery 400 inside the formation capsule 600. There are nine formation cavities 1461, and the nine formation cavities 1461 are stacked in sequence from bottom to top. A formation mechanism is provided on the formation cavity 1461. The formation mechanism is used to perform formation processing on the battery 400 inside the formation capsule 600. The formation mechanism includes a lower formation auxiliary power-on component, an upper formation auxiliary power-on component, a lower charging probe 1465, an upper charging probe 1467, and a formation lifting component.

[0054] The lower formation auxiliary power-on component corresponds to the negative probe component of the formation capsule 600, and the upper formation auxiliary power-on component corresponds to the positive probe component of the formation capsule 600. The lower formation auxiliary power-on component includes a lower power-on probe base 14641 and a lower power-on probe 14642 penetrating through the lower power-on probe base 14641. The upper formation auxiliary power-on component includes an upper power-on probe base 14661 and an upper power-on probe 14662 penetrating through the upper power-on probe base 14661. A first formation support plate 1462 is provided at the bottom inside the formation cavity 1461. A second formation support plate 1463 is provided at the top of the first formation support plate 1462, and a placement position 14631 is provided at the top of the second formation support plate 1463. An installation groove is provided at the top of the first formation support plate 1462. A first formation through hole is provided at the bottom of the installation groove. A second formation through hole corresponding to the installation groove is provided at the bottom of the placement position 14631. The lower power-on probe base 14641 is arranged in the installation groove. The upper end of the lower power-on probe 14642 passes through the second formation through hole and is located inside the placement position 14631. The upper end of the lower power-on probe 14642 is used to dock with the negative probe of the negative probe component of the formation capsule 600 to achieve electrical connection with the negative probe. The lower end of the lower power-on probe 14642 passes through the first formation through hole and is located inside the lower empty space at the bottom inside the formation cavity 1461. The lower end of the lower power-on probe 14642 is used to be electrically connected to the negative pole of the power supply through a connection wire. A first formation installation hole is provided at the top of the first formation support plate 1462. A second formation installation hole corresponding to the first formation installation hole is provided at the bottom of the placement position 14631. The lower charging probe 1465 penetrates through the first formation installation hole and the second formation installation hole. The upper end of the lower charging probe 1465 is located inside the placement position 14631, and the lower end of the lower charging probe 1465 is located inside the lower empty space of the formation cavity 1461. The upper end of the lower charging probe 1465 is used to dock with the negative terminal 6008 of the formation capsule 600 to achieve electrical connection with the negative terminal 6008. The lower end of the lower charging probe 1465 is used to be electrically connected to the negative pole of the charging power supply through a connection wire. A lower charging probe base is sleeved on the outer periphery of the lower charging probe 1465. The lower charging probe base is arranged at the bottom end of the first formation support plate 1462, and the lower charging probe base plays a role in installing and supporting the lower charging probe 1465.

[0055] There are three negative electrode probe assemblies for the formation capsule 600, so there are also three lower formation auxiliary power-on assemblies. The arrangement of the three lower formation auxiliary power-on assemblies is the same as that of the three negative electrode probe assemblies of the formation capsule 600. Each negative electrode probe of each negative electrode probe assembly of the formation capsule 600 is four, so the lower power-on probes 14642 of each lower formation auxiliary power-on assembly are also four respectively. The four lower power-on probes 14642 are arranged at intervals along the length direction of the lower power-on probe base 14641. In this embodiment, there are four first formation support plates 1462 and second formation support plates 1463 in the formation cavity 1461. There are six lower formation auxiliary power-on assemblies and two lower charging probes 1465 on each first formation support plate 1462 and second formation support plate 1463. Therefore, the placement position 14631 of each second formation support plate 1463 can accommodate two formation capsules 600, so the formation cavity 1461 can accommodate eight formation capsules 600.

[0056] The formation lifting assembly includes a first formation mounting plate 14681, a second formation mounting plate 14683, a formation lifting cylinder 14682, and a liquid storage cup 14684. The top end of the formation cavity 1461 has an upper vacancy communicating with the inside of the formation cavity 1461. The first formation mounting plate 14681 is arranged in the upper vacancy, and the second formation mounting plate 14683 is located below the first formation mounting plate 14681 and inside the formation cavity 1461. A slot 14689 is provided at the top end of the first formation mounting plate 14681. The formation lifting cylinder 14682 is arranged at the bottom of the slot 14689. The output end of the formation lifting cylinder 14682 passes through the first through hole at the bottom of the slot 14689 and is connected to the top end of the second formation mounting plate 14683. The formation lifting cylinder 14682 partially protrudes from the top end of the first formation mounting plate 14681. The formation lifting cylinder 14682 is used to drive the second formation mounting plate 14683 to move up and down. The liquid storage cup 14684 is arranged through the liquid storage cup through hole of the second formation mounting plate 14683. The bottom end of the liquid storage cup 14684 is located below the second formation mounting plate 14683. A second through hole is provided at the bottom of the slot 14689. The top end of the liquid storage cup 14684 passes through the second through hole of the first formation mounting plate 14681 and is located above the first formation mounting plate 14681. The top end of the liquid storage cup 14684 is closed and the bottom end is open. A liquid storage cup connector 146841 is provided at the top end of the liquid storage cup 14684. The liquid storage cup connector 146841 communicates with the inside of the liquid storage cup 14684 and is used to connect to a vacuum pumping device through a vacuum pipeline. The vacuum pumping device is, for example, a vacuum pump for air extraction. The up and down movement of the second formation mounting plate 14683 can drive the liquid storage cup 14684 and the liquid storage cup connector 146841 to move up and down. In practical applications, the liquid storage cup 14684 corresponds to the airtightness measuring rod 6005 of the formation capsule 600. The bottom end of the liquid storage cup 14684 is used for plugging and mating with the upper end of the airtightness measuring rod 6005. When the bottom end of the liquid storage cup 14684 is plugged into the upper end of the airtightness measuring rod 6005, the inside of the liquid storage cup 14684 communicates with the inside of the airtightness measuring rod 6005. There are two formation lifting assemblies in this embodiment. The formation lifting cylinders 14682 and the slots 14689 of each formation lifting assembly are two respectively, and the liquid storage cups 14684 of each formation lifting assembly are four respectively.

[0057] The bottom end of the second formation mounting plate 14683 is provided with a first formation groove, the top end of the upper power-on probe seat 14661 is arranged in the first formation groove, the top end of the second formation mounting plate 14683 is provided with a second formation groove communicating with the first formation groove, the lower end of the upper power-on probe 14662 is located below the upper power-on probe seat 14661, the lower end of the upper power-on probe 14662 is used to dock with the positive probe 6006 of the positive probe assembly of the formation capsule 600 to realize electrical connection with the positive probe 6006, the upper end of the upper power-on probe 14662 is located in the second formation groove 7721, and the upper end of the upper power-on probe 14662 is used to be electrically connected to the positive pole of the power supply through a connecting wire. The up-and-down movement of the second formation mounting plate 14683 can drive the upper power-on probe 14662 and the upper power-on probe seat 14661 to move up and down. There are four positive probes 6006 in the positive probe assembly of the formation capsule 600, so there are also four upper power-on probes 14662 in the upper formation auxiliary power-on assembly. The four upper power-on probes 14662 are arranged at intervals along the length direction of the upper power-on probe seat 14661. Each formation lifting assembly in this embodiment has four upper formation auxiliary power-on assemblies respectively.

[0058] The upper charging probe 1467 penetrates through the second formation mounting plate 14683. The lower end of the upper charging probe 1467 is located below the second formation mounting plate 14683 and is used to dock with the positive terminal 6004 of the formation capsule 600 to realize electrical connection with the positive terminal 6004. The upper end of the upper charging probe 1467 is located between the second formation mounting plate 14683 and the first formation mounting plate 14681 and is used to be electrically connected to the positive pole of the charging power supply through a connecting wire. There are four upper charging probes 1467 on each formation lifting assembly in this embodiment. In this embodiment, the bottom end of the second formation mounting plate 14683 is provided with a third formation groove, the top end of the second formation mounting plate 14683 is provided with a fourth formation groove communicating with the third formation groove, and the upper charging probe 1467 penetrates through the third formation groove and the fourth formation groove. An upper charging probe seat is sleeved on the outer periphery of the upper charging probe 1467, and the upper charging probe seat is arranged in the third formation groove. The upper charging probe seat plays a role in installing and supporting the upper charging probe 1467. The up-and-down movement of the second formation mounting plate 14683 can drive the upper charging probe 1467 and the upper charging probe seat to move up and down.

[0059] In actual application, after the formation capsules 600 and the batteries 400 inside the formation capsules 600 are conveyed to the battery formation device 140 through the formation capsule conveying line 130, the stacker transports the formation capsules 600 and the batteries 400 inside the formation capsules 600 into the formation cavity 1461 and places them at the bottom of the placement position 14631. Then, the upper end of the lower power-on probe 14642 is docked with the corresponding negative probe of the formation capsule 600, and the upper end of the lower charging probe 1465 is docked with the negative terminal 6008 of the formation capsule 600. Then, the formation lifting cylinder 14682 drives the second formation mounting plate 14683 to move downward, thereby driving the upper power-on probe 14662, the upper charging probe 1467, and the liquid storage cup 14684 to move downward until the upper power-on probe 14662 is docked with the corresponding positive probe 6006 of the formation capsule 600, the lower end of the upper charging probe 1467 is docked with the positive terminal 6004 of the formation capsule 600, and the bottom end of the liquid storage cup 14684 is inserted into the upper end of the airtightness measuring rod 6005 of the formation capsule 600. In this way, the power supply can be electrically connected to the heating plate of the formation capsule 600 through the lower power-on probe 14642 and the corresponding negative probe, and the upper power-on probe 14662 and the corresponding positive probe 6006, so as to energize the heating plate. After the heating plate is energized, it generates heat, thereby heating the batteries 400 inside the formation capsules 600. At the same time, the charging power supply can be electrically connected to the negative electrode of the battery 400 through the lower charging probe 1465, the negative terminal 6008, and the negative formation probe 6009, and can be electrically connected to the positive electrode of the battery 400 through the upper charging probe 1467, the positive terminal 6004, and the positive formation probe 6007. In this way, the battery 400 can be charged through the charging power supply, so that a chemical reaction occurs between the electrode material and the electrolyte inside the battery 400 at the solid-liquid two-phase interface, thereby forming a passivation film covering the surface of the electrode material. In this way, the formation of the battery 400 at high temperature is realized. During the charging process of the battery 400, the inside of the battery 400 is evacuated through the vacuum extraction device via the liquid storage cup joint 146841, the liquid storage cup 14684, and the airtightness measuring rod 6005 of the formation capsule 600, so that the inside of the battery 400 is in a negative pressure state. In this way, the gas generated during the formation of the battery 400 can be quickly discharged from the battery 400. The charging time of the battery 400 is, for example, 20 hours, the vacuum degree inside the battery 400 is, for example, -40 Kpa, and the temperature at which the heating plate heats the battery 400 is, for example, 45°C. During the process of evacuating the inside of the battery 400, the electrolyte evacuated from the inside of the battery 400 can be stored in the liquid storage cup 14684. When the inside of the battery 400 returns to normal pressure, the electrolyte in the liquid storage cup 14684 can flow back into the inside of the battery 400 through the airtightness measuring rod 6005, so as to re-infiltrate the battery core of the battery 400. In this way, the liquid storage cup 14684 can prevent the electrolyte from being evacuated from the inside of the battery 400.After formation is completed, the formation capsules 600 in the formation cavity 1461 and the batteries 400 in the formation capsules 600 are transported to the formation capsule conveying line 130 by the stacker. Then, the formation capsules 600 and the batteries 400 in the formation capsules 600 are transported to the formation transfer device 120 through the formation capsule conveying line 130. Then, the batteries 400 in the formation capsules 600 are taken out by the formation transfer device 120. The action of taking out the battery 400 from the formation capsule 600 is opposite to the action of putting the battery 400 into the formation capsule 600. Specifically, first, the formation cup 6002 of the formation capsule 600 is removed from the top of the formation lower cavity 6001, then the battery 400 is taken out from the inner cavity of the formation lower cavity 6001, and then the formation cup 6002 is covered on the top of the formation lower cavity 6001.

[0060] The liquid supplementing device 160 includes a liquid supplementing mechanism. The structure of the liquid supplementing mechanism is the same as that of the first liquid injection mechanism 23, and the structure of the first liquid injection mechanism 23 will not be elaborated here. After the battery 400 is taken out from the formation capsule 600, the electrolyte is injected into the battery 400 through the liquid supplementing mechanism, so as to realize liquid supplementing for the battery 400, so that the battery 400 meets the production requirements. Then, the liquid-supplemented battery 400 is transported to the blanking station through the blanking conveying line 170 for blanking, so as to obtain the finished battery.

[0061] Through the provided battery liquid injection device, static device 80, battery formation device 140 and liquid supplementing device 160, the present invention can perform the first liquid injection on the battery 400, put the battery 400 after the first liquid injection into the injection capsule 500, perform static treatment on the battery 400 in the injection capsule 500 and perform the second liquid injection on the battery 400 in the injection capsule 500 through the battery liquid injection device. Through the static device 80, the battery 400 in the injection capsule 500 can be statically treated after the second liquid injection of the battery 400 in the injection capsule 500 by the battery liquid injection device. Through the battery formation device 140, the statically treated battery 400 can be formed. Through the liquid supplementing device 160, the formed battery 400 can be liquid-supplemented. Compared with the prior art, the liquid injection, static treatment, formation and liquid supplement of the battery 400 can be carried out on the same production line, and there is no need to perform transfer operations between each process, which will not consume a lot of time, reduce the production cost and improve the production efficiency.

[0062] The present invention also provides a battery liquid injection and formation production method, which specifically includes the following steps:

[0063] S1. The battery 400 is filled with liquid for the first time by a battery liquid filling device, the battery 400 after the first liquid filling is placed into a liquid filling capsule 500, the battery 400 in the liquid filling capsule 500 is left standing, and after the standing treatment of the battery 400 in the liquid filling capsule 500, the battery 400 in the liquid filling capsule 500 is filled with liquid for the second time. S2. After the battery 400 in the liquid filling capsule 500 is filled with liquid for the second time by the battery liquid filling device, the battery 400 in the liquid filling capsule 500 is left standing by a standing device 80. S3. After the battery 400 in the liquid filling capsule 500 is left standing by the standing device 80, the battery 400 is taken out of the liquid filling capsule 500 by a standing transfer device 100 and the taken-out battery 400 is transferred to an intermediate conveying line 110. S4. The taken-out battery 400 is conveyed to a formation transfer device 120 by the intermediate conveying line 110. S5. A formation capsule 600 is conveyed to the formation transfer device 120 by a formation capsule conveying line 130, and the battery 400 is placed into the formation capsule 600 by the formation transfer device 120. S6. The formation capsule 600 and the battery 400 in the formation capsule 600 are conveyed to a battery formation device 140 by the formation capsule conveying line 130. S7. The battery 400 in the formation capsule 600 is formed by the battery formation device 140. S8. After the battery 400 in the formation capsule 600 is formed by the battery formation device 140, the formation capsule 600 and the battery 400 in the formation capsule 600 are conveyed to the formation transfer device 120 by the formation capsule conveying line 130. S9. The battery 400 is taken out of the formation capsule 600 by the formation transfer device 120. S10. The taken-out battery 400 is replenished with liquid by a liquid replenishing device 160. S11. The battery 400 after liquid replenishment is conveyed to a blanking station by a blanking conveying line 170, and thus a finished battery can be obtained.

[0064] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A battery liquid injection formation production line, characterized in that: It includes a battery filling device, a stationary device, a battery formation device and a liquid replenishing device, wherein the battery filling device is located to the right of the stationary device, the battery formation device is located in front of the stationary device, and the liquid replenishing device is located in front of the battery formation device; The battery injection device is used to inject liquid into the battery for the first time, place the battery after the first injection into the injection capsule, place the battery in the injection capsule in a static state, and inject liquid into the battery in the injection capsule for the second time after the battery in the injection capsule has been placed in a static state; The static device is used to perform static treatment on the batteries in the liquid injection capsule after the batteries in the liquid injection capsule are injected with liquid for the second time by the battery injection device; The battery formation equipment is used to perform formation treatment on the batteries in the formation capsule; The liquid replenishing device is used to replenish the battery after the formation treatment.

2. The battery liquid injection formation production line according to claim 1, characterized in that: The battery filling equipment includes a first filling device, a first standing device, and a second filling device which are arranged in sequence from front to back. The first filling device is used to fill the battery with liquid for the first time and place the battery after the first filling into a filling capsule. The first standing device is used to perform a standing treatment on the battery in the filling capsule. The second filling device is used to fill the battery in the filling capsule with liquid for the second time after the battery in the filling capsule has been allowed to stand still.

3. The battery liquid injection formation production line according to claim 2, characterized in that: The first liquid injection device includes a first liquid injection mechanism, a liquid injection and battery discharge manipulator and a liquid injection and cup removal manipulator, the liquid injection and battery discharge manipulator and the liquid injection and cup removal manipulator are both located above the first liquid injection mechanism, the liquid injection and cup removal manipulator is located to the left of the liquid injection and battery discharge manipulator, the first liquid injection mechanism is used to perform the first liquid injection on the battery, the liquid injection and battery discharge manipulator is used to place the battery after the first liquid injection into the inner cavity of the liquid injection lower cavity of the liquid injection capsule, the liquid injection and cup removal manipulator is used to remove the liquid injection cup of the liquid injection capsule from the top of the liquid injection lower cavity of the liquid injection capsule and to cover the liquid injection cup of the liquid injection capsule on the top of the liquid injection lower cavity of the liquid injection capsule.

4. The battery liquid injection formation production line according to claim 3, characterized in that: The first liquid injection device also includes a first liquid injection capsule drawstring, and the first liquid injection capsule drawstring is located below the liquid injection and buckle cup removal robot.

5. The battery liquid injection formation production line according to claim 2, characterized in that: The second liquid injection device includes a second liquid injection mechanism, and the second liquid injection mechanism is used to perform a second liquid injection on the batteries in the liquid injection capsule after the batteries in the liquid injection capsule are left to stand.

6. The battery liquid injection formation production line according to claim 5, characterized in that: The second liquid injection device also includes a second liquid injection capsule conveying belt, and the second liquid injection capsule conveying belt is located above the second liquid injection mechanism.

7. The battery liquid injection formation production line according to claim 2, characterized in that: The stationary equipment includes a second stationary device, and the first stationary device and the second stationary device both include a stationary vertical warehouse, and the stationary vertical warehouse includes a stationary cavity for placing liquid injection capsules and batteries in the liquid injection capsules, and the stationary cavity is provided with a stationary auxiliary power supply mechanism and a stationary positive and negative pressure circulation mechanism.

8. The battery liquid injection formation production line according to claim 1, characterized in that: The battery formation equipment comprises a formation library, the formation library comprises a formation unit, the formation unit comprises a formation cavity for placing a formation capsule and the battery in the formation capsule, and the formation cavity is provided with a formation mechanism.

9. The battery liquid injection formation production line according to claim 3, characterized in that: The fluid replenishment device includes a fluid replenishment mechanism, and the structure of the fluid replenishment mechanism is the same as that of the first fluid injection mechanism.

10. A battery liquid injection production method, characterized in that: The following steps are involved: Performing a first liquid injection on the battery by using a battery liquid injection device, placing the battery after the first liquid injection into a liquid injection capsule, performing a static treatment on the battery in the liquid injection capsule, and performing a second liquid injection on the battery in the liquid injection capsule after the battery in the liquid injection capsule has been statically treated; After the battery in the injection capsule is injected with liquid for the second time by the battery injection device, the battery in the injection capsule is placed in a static state by the static device; After the battery in the liquid injection capsule is subjected to a static treatment by a static device, the battery is first taken out from the liquid injection capsule, and then the taken out battery is placed in a formation capsule; Performing formation treatment on the batteries in the formation capsules by using battery formation equipment; After the battery in the formation capsule is subjected to formation treatment by the battery formation equipment, the battery is taken out from the formation capsule; The battery taken out from the formation capsule is replenished with liquid through the replenishing device.

Images