Secondary liquid supplementing equipment for new energy battery

Abstract

The invention discloses new energy battery secondary liquid supplementing equipment which comprises a rotating table, battery material boxes, liquid injection cups, plugs, a liquid beating work station, liquid injection pipes and a liquid injection pump cabinet, the rotating table is surrounded by a plurality of vertical faces, each vertical face is provided with one battery material box and provided with a lifting air cylinder, a group of liquid injection cups are hung below the lifting air cylinders, and the battery material boxes are arranged on the vertical faces. The lower part of the liquid injection cup is connected with a liquid injection nozzle and is in butt joint with the battery material box, and the liquid injection cup is externally connected with a positive pressure gas source and a negative pressure gas source. By means of the mode, according to the secondary liquid supplementing equipment for the new energy battery, rapid shear matching of the liquid injection cup and multiple gas sources is achieved through the integrated carrier plate, and rhythm optimization of the technological process is achieved through the redundant section constructed by the rotating table; and meanwhile, structural detail optimization is carried out for residual liquid cleaning and feeding and discharging to optimize the stability and reliability of equipment operation, accurate and efficient execution of the liquid supplementing process is ensured, the automation level is further improved, and the problems of automation, accuracy and efficiency of the liquid supplementing process in the battery production line are solved.

Description

Technical Field

[0001] The present invention relates to the field of battery liquid filling equipment, and in particular to a new energy battery secondary liquid filling equipment. Background Art

[0002] The battery production line involves an electrolyte injection process, which includes not only the initial filling of the battery cell, but also the secondary filling of the already filled battery cell. In order to achieve the expected filling volume, there is a relatively long static stage in the filling process. In the prior art, the static stage involves offline processing of multiple sets of equipment. The offline processing process is separated from the production line control, and there are many uncontrollable factors in the loading and unloading process. It is necessary to invest a lot of manpower and material resources to maintain the equipment to ensure the stable operation of the offline equipment. Among them, there are mainly problems such as the inability to effectively treat the waste liquid and the connection between the upper and lower lines. In addition, due to its large land area and the inability to automatically monitor it when it is separated from the production line, the production line process is complicated, the production line scale is bloated, the efficiency is poor, the automation level is low, and it cannot meet production needs. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a new energy battery secondary fluid replenishment equipment, which realizes the rapid shear coordination between the liquid filling cup and multiple gas sources through an integrated carrier plate, realizes the online control rhythm optimization through the redundant sections of the rotating table structure, and optimizes the structural details for residual liquid cleaning and loading and unloading to optimize the stability and reliability of the equipment operation, ensure the accurate and efficient execution of the fluid replenishment process, further improve the automation level, and solve the automation, precision and efficiency problems of the fluid replenishment process in the battery production line.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a new energy battery secondary fluid replenishing equipment, including a rotating table, a battery material box, a liquid filling cup, a plug, a liquid filling station, a liquid filling pipe, and a liquid filling pump cabinet. The rotating table is surrounded by a plurality of vertical surfaces, each vertical surface is provided with a battery material box and is equipped with a lifting cylinder, a group of liquid filling cups are hung below the lifting cylinder, the liquid filling cups are connected to a liquid filling nozzle and are connected to the battery material box, the liquid filling cups are externally connected to a positive pressure and negative pressure air source, the liquid filling cups have a liquid filling port and are equipped with a plug, a secondary cylinder with a uniform lifting plug is hung below the lifting cylinder, the rotating table is connected to the liquid filling station, the liquid filling station is provided with a liquid filling pipe connected to the liquid filling port, and the liquid filling pipe is externally connected to the liquid filling pump cabinet through a diaphragm valve.

[0005] In a preferred embodiment of the present invention, a membrane plug valve is provided between the liquid injection nozzle and the liquid injection cup; the entire group of liquid injection cups is packaged on the bottom surface of an integrated carrier, an air path connected in parallel to each of the liquid injection cups is opened in the integrated carrier, the integrated carrier is provided with an external connector, the air path is connected from the connector and connected to an air distribution row, and the air distribution row is connected to the corresponding air source via a high vacuum air control valve, a pressure relief air control valve, a low vacuum air control valve and a positive pressure nitrogen air control valve.

[0006] In a preferred embodiment of the present invention, the low vacuum air-controlled valve is used for vacuuming before battery refilling; the high vacuum air-controlled valve is used for degassing after battery refilling; the pressure relief air-controlled valve is used for positive and negative pressure cycle switching after battery refilling; the positive pressure nitrogen air-controlled valve is used for pressurizing and discharging the filling cup after battery refilling; the membrane plug valve is normally open, the plug is interference fit with the filling port, and the filling nozzle is connected to the battery and interference fit.

[0007] In a preferred embodiment of the present invention, the liquid injection station is provided with a high platform, a horizontally retractable pushing cylinder is arranged in the center of the high platform, the front end of the pushing cylinder is connected to a vertical bracket, a Z-axis cylinder is installed on the vertical bracket, the Z-axis cylinder is connected to a horizontally arranged pipeline carrier plate at the bottom, the injection pipe is integrated on the pipeline carrier plate and corresponds one-to-one with the injection port; when the membrane plug valve is normally closed, it is used for liquid injection cup liquid buffering, the plug is separated from the injection port, and the injection nozzle is connected to the battery and has an interference fit; when the membrane plug valve is normally open, it is used for battery liquid replenishment, the plug is interference fit with the injection port, and the injection nozzle is connected to the battery and has an interference fit.

[0008] In a preferred embodiment of the present invention, the battery box is open upward, and a plurality of equally spaced partitions are provided inside the battery box, the partitions surround and form a plurality of accommodating cavities, the inner walls of the accommodating cavities are provided with insulating plates, and the accommodating cavities correspond one-to-one to the liquid injection nozzles.

[0009] In a preferred embodiment of the present invention, the rotating table is installed on a slewing bearing, and the slewing bearing is connected to an external driving motor through gear transmission. The rotating table is divided into a loading station, a liquid injection station and a plurality of static stations for each vertical surface in sequence; the liquid injection station is arranged at the liquid injection station.

[0010] In a preferred embodiment of the present invention, a residual liquid processing station is arranged at the loading station, and a hanging platform is set up at the residual liquid processing station. The hanging platform is connected to a lifting platform through a short-stroke cylinder and a plurality of guide columns inserted in linear bearings. A loading cylinder for horizontally pushing the opposite surface is arranged on the bottom surface of the lifting platform, and a waste liquid box is arranged at the front end of the loading cylinder. The waste liquid box is provided with an upper cover, and the upper cover is integrated with a plurality of contoured joints corresponding to the liquid injection nozzles one by one; the waste liquid box has an inclined lower bottom surface, and a cleaning interface and a waste liquid interface are arranged at both ends of the lower bottom surface, the cleaning interface is externally connected to a DMC liquid storage tank, and the waste liquid interface is externally connected to a residual liquid tank.

[0011] In a preferred embodiment of the present invention, the facade is provided with a carrier for carrying the battery box, and the carrier is provided with inner pin columns and inner pin sleeves matching the battery box; a pair of conveying brackets respectively pulled by linear modules are connected to the loading station, and the conveying brackets are matched in pairs at the two ends of the bottom of the battery box, and the bottom of the conveying bracket carries a lifting cylinder, and the two wings of the conveying bracket are attached to a carrier with a pair of Z-axis line rails, and the spacing between the conveying brackets is greater than the length of the battery box, and the conveying bracket is provided with outer pin columns and outer pin sleeves matching the battery box, and the bottom of the conveying bracket is provided with a slide cylinder, and a pair of mutually matching travel sensing photoelectric switches and sensor sheets are installed on the slide cylinder and the carrier.

[0012] In a preferred embodiment of the present invention, a battery box removal device is arranged between the linear modules within the travel range, and the battery box removal device includes a lifting cylinder and a template horizontally arranged at the upper end of the lifting cylinder, a plurality of top columns are erected on the template, a plurality of through holes corresponding to the top columns are opened at the bottom of the battery material box, a battery pad is arranged in the battery material box, a counterweight guard plate is stacked at the bottom of the battery pad, and the top column evenly covers the entire counterweight guard plate and is connected to the counterweight guard plate through the lifting cylinder.

[0013] In a preferred embodiment of the present invention, the linear module is arranged with a rack at the other end of the opposing rotating table, which is equal to the upper surface of the battery box, and two rows of photoelectric sensors are horizontally installed on the rack, and the photoelectric sensors are used to detect the loading height of the battery in the battery box; a gantry is set up between the linear modules within the travel range, and a downward pressure cylinder is suspended on the gantry, and a pressure ruler is horizontally suspended on the downward pressure cylinder, and the size of the pressure ruler is matched to cover the entire battery box, and the downward pressure cylinder and the photoelectric sensor cooperate with each other.

[0014] The beneficial effects of the present invention are as follows: the new energy battery secondary rehydration equipment provided by the present invention realizes the rapid shear coordination between the liquid filling cup and multiple gas sources through an integrated carrier plate, and realizes the rhythm optimization of the process flow through the redundant sections of the rotating table structure. At the same time, structural details are optimized for residual liquid cleaning and loading and unloading to optimize the stability and reliability of equipment operation, ensure the accurate and efficient execution of the rehydration process, further improve the level of automation, and solve the automation, precision and efficiency problems of the rehydration process in the battery production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 This is an overall structural diagram of a new energy battery secondary liquid replenishing device of the present invention; Figure 2 It is a structural diagram of the liquid injection cup; Figure 3 It is a structural diagram of the injection tube; Figure 4 It is a structural diagram of the facade; Figure 5 It is the structural diagram of the integrated carrier board; Figure 6 It is the structural diagram of the battery material box; Figure 7 It is the structural diagram of the rotating table; Figure 8 It is the structural diagram of the pressure ruler; Fig. 9 It is the structural diagram of the vehicle; Fig.10 This is a structural diagram of the waste liquid box. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1-10 As shown, the embodiment of the present invention includes: A new energy battery secondary fluid replenishing equipment comprises a rotating table 1, a battery material box 2, a liquid injection cup 3, a plug 4, a liquid injection station 5, a liquid injection pipe 6, and a liquid injection pump cabinet 7. The rotating table 1 is surrounded by a plurality of vertical surfaces 101, each vertical surface 101 is provided with a battery material box 2 and is equipped with a lifting cylinder 102, a group of liquid injection cups 3 are hung below the lifting cylinder 102, the liquid injection cups 3 are connected to a liquid injection nozzle 3a below and are connected to the battery material box 2, the liquid injection cups 3 are externally connected to a positive pressure and negative pressure air source, the liquid injection cups 3 have a liquid injection port 3b and are equipped with a plug 4, a secondary cylinder 103 for uniformly lifting the plug 4 is hung below the lifting cylinder 102, the rotating table 1 is connected to the liquid injection station 5, the liquid injection station 5 is provided with a liquid injection pipe 6 connected to the liquid injection port 3b, and the liquid injection pipe 6 is externally connected to the liquid injection pump cabinet 7 via a diaphragm valve 601.

[0018] Among them, a membrane plug valve 301 is arranged between the injection nozzle 3a and the injection cup 3; the entire group of injection cups 3 is packaged on the bottom surface of an integrated carrier board 302, and an air circuit 303 is opened in the integrated carrier board 302 to connect the injection cups 3 in parallel. The integrated carrier board 302 is provided with an external connector 304, and the air circuit 303 is connected from the connector 304 and connected to an air distribution exhaust 305, and the air distribution exhaust 305 is connected to the corresponding air source via a high vacuum air control valve 306a, a pressure relief air control valve 306b, a low vacuum air control valve 307c and a positive pressure nitrogen air control valve 307d.

[0019] Furthermore, the low vacuum air-controlled valve 307c is used for vacuuming the battery 100 before rehydration; the high vacuum air-controlled valve 306a is used for degassing after rehydration of the battery 100; the pressure relief air-controlled valve 306b is used for positive and negative pressure cycle switching after rehydration of the battery 100; the positive pressure nitrogen air-controlled valve 307d is used for pressurized discharge of the filling cup after rehydration of the battery 100; the membrane plug valve 301 is normally open, the plug 4 is interference fit with the filling port 3b, and the filling nozzle 3a is connected to the battery 100 and is interference fit.

[0020] Furthermore, the liquid injection station 5 is provided with a platform 501, and a horizontally retractable pushing cylinder 502 is arranged in the center of the platform 501. The front end of the pushing cylinder 502 is connected to a vertical bracket 503, and a Z-axis cylinder 504 is installed on the vertical bracket 503. The Z-axis cylinder 504 is connected to a horizontally arranged pipeline carrier plate 505 at the bottom, and the injection pipe 6 is integrated on the pipeline carrier plate 505 and corresponds to the injection port 3b one by one; when the membrane plug valve 301 is normally closed, it is used for liquid injection cup liquid buffering, the plug 4 is separated from the injection port 3b, and the injection nozzle 3a is connected to the battery 100 and has an interference fit; when the membrane plug valve 301 is normally open, it is used for battery liquid replenishment, the plug 4 has an interference fit with the injection port 3b, and the injection nozzle 3a is connected to the battery 100 and has an interference fit.

[0021] Furthermore, the battery material box 2 is open upward, and a plurality of equally spaced partitions 201 are provided inside the battery material box 2, the partitions 201 surround a plurality of accommodating cavities 202, the inner walls of the accommodating cavities 202 are provided with insulating plates 203, and the accommodating cavities 202 correspond one-to-one to the injection nozzles 3a.

[0022] Furthermore, the rotating table 1 is installed on a slewing bearing 101, and the slewing bearing 101 is connected to an external driving motor through a gear 102. The rotating table 1 is divided into a loading station 101a, a liquid injection station 101b and a plurality of static stations 101c for each vertical surface 101; the liquid injection station 5 is arranged at the liquid injection station 101b.

[0023] Furthermore, a residual liquid treatment station 8 is arranged at the loading station 101a, and a hanging platform 801 is set up at the residual liquid treatment station 8. The hanging platform 801 is connected to a lifting platform 805 through a short-stroke cylinder 802 and a plurality of guide columns 804 inserted in a linear bearing 803. The bottom surface of the lifting platform 805 is provided with a loading cylinder 806 that pushes horizontally against the opposite surface 101. A waste liquid box 807 is arranged at the front end of the loading cylinder 806. The waste liquid box 807 is provided with an upper cover 808, and the upper cover 808 is integrated with a plurality of contoured joints 304 corresponding to the liquid injection nozzles 3a one by one; the waste liquid box 807 has an inclined lower bottom surface, and a cleaning interface 809a and a waste liquid interface 809b are arranged at both ends of the lower bottom surface. The cleaning interface 809a is externally connected to a DMC liquid storage tank 809, and the waste liquid interface 809b is externally connected to a residual liquid tank.

[0024] Furthermore, the facade 101 is provided with a carrier 102 for carrying the battery box 2, and the carrier 102 is provided with an inner pin column 201 and an inner pin sleeve 202 that match the battery box 2; a pair of conveying brackets 204 respectively pulled by a linear module 203 are docked at the loading station 101a, and the conveying brackets 204 are matched in pairs at the two ends 204a of the bottom of the battery box 2, and the bottom of the conveying bracket 204 carries a lifting cylinder 205, and the two wings of the conveying bracket 204 are attached to a carrier 207 with a pair of Z-axis line rails 206, and the spacing between the conveying brackets 204 is greater than the length of the battery box 2, and the conveying bracket 204 is provided with an outer pin column and an outer pin sleeve 208 that match the battery box 2, and a slide cylinder 209 is provided at the bottom of the conveying bracket 204, and a pair of mutually cooperating travel sensing photoelectric switches and sensor sheets 210 are installed on the slide cylinder 209 and the carrier 207.

[0025] Furthermore, a battery box removal device 9 is arranged within the travel range between the linear modules 203, and the battery box removal device 9 includes a lifting cylinder 901 and a template 902 horizontally arranged at the upper end of the lifting cylinder 901, and a plurality of top columns 903 are erected on the template 902. A plurality of through holes 904 corresponding to the top columns 903 are opened at the bottom of the battery material box 2, and a battery pad 905 is arranged in the battery material box 2. A counterweight guard plate 906 is stacked at the bottom of the battery pad 905, and the top column 903 evenly covers the entire counterweight guard plate 906 and is connected to the counterweight guard plate 906 through the lifting cylinder 901.

[0026] Furthermore, the linear module 203 is arranged with a rack 11 at the other end of the opposing rotating table 1, which is equal to and higher than the upper surface of the battery box 2, and two rows of photoelectric sensors 12 are horizontally installed on the rack 11, and the photoelectric sensors 12 are used to detect the loading height of the battery 100 in the battery box 2; a gantry 13 is erected between the linear modules 203 within the travel range, and a downward pressure cylinder 14 is suspended on the gantry 13, and a pressure ruler 15 is horizontally suspended on the downward pressure cylinder 14, and the size of the pressure ruler 15 is matched to cover the entire battery box 2, and the downward pressure cylinder 14 and the photoelectric sensor 12 cooperate with each other.

[0027] This equipment uses a robot to load the battery, and the robot uses an air gripper to grab the battery and move it to the Figure 6 In the housing cavity 202 shown, during the loading process, the lifting cylinder 901 is in an extended state, and the battery half 905 is lifted up in the middle of the housing cavity 202. After all eight batteries are loaded, the lifting cylinder 901 retracts. At the same time, the linear module 203 drives the carrier 207 to the position directly below the battery material box 2 to receive the material, and the conveying bracket 204 cooperates with the outer pin sleeve 208. Space is left between the conveying bracket 204 for the inner pin column 201 on the carrier 102 to dock with the inner pin sleeve 202. Similarly, the manipulator is also used for unloading the finished battery refill products. The unloading process uses the support 903 to push out the finished battery in the housing cavity 202.

[0028] During the loading stage, if the battery 100 is still stuck in place and cannot fall completely after the top column 903 is retracted, the photoelectric sensor 12 will detect that the battery is at an abnormal height. At this time, the linear module 203 will translate the battery box 2 to the position as shown in FIG. Figure 8 In the position shown, the downward pressure cylinder 14 drives the pressure bar 15 to act on the battery 100, so that the battery is forced to move downward and completely fall into the battery box 2.

[0029] After the battery material box 2 is successfully loaded, the liquid injection cup 3 will be docked at the loading station 101a. Figure 4 As shown, the lifting cylinder 102 descends to seal the injection nozzle 3a with the battery, and the secondary cylinder 103 drives the plug 4 to press down the sealed injection port 3b, so that the injection cup 3 and the battery are in a sealed state. The low vacuum air-controlled valve 307c evacuates the injection cup 3 and the battery, and the membrane plug valve 301 is normally closed after the vacuum pressure reaches the specified standard.

[0030] The rotating table 1 rotates the battery material box 2 to the liquid injection station 101b, and the secondary cylinder 103 is reset to release the pressure connection between the plug 4 and the liquid injection port 3b. Figure 3The shown liquid filling station 5 loads the liquid filling tube 6 to the liquid filling port 3b, the push cylinder 502 pushes out the vertical bracket 503, and the Z-axis cylinder 504 presses down the pipeline carrier 505. The liquid filling tube 6 is an L-shaped curved tube with an opening downward, and its elbow is inserted into the liquid filling port 3b. The electrolyte is released by the diaphragm valve 601 and injected into the liquid filling cup 3. A one-way valve is integrated on the liquid filling tube 6 to prevent gas backflow.

[0031] In order to prevent the injection tube 6 from splashing onto the battery housing during loading and injection, Figure 5 As shown, a drip tray 3c is installed around the injection port 3b, and a splash drain plate 3d is arranged inside the drip tray 3c. The splash drain plate 3d is matched with each injection port 3b, and the splash drain plate 3d has a drainage slope.

[0032] After the electrolyte injection is completed, the membrane plug valve 301 is opened, and under the action of negative pressure, the electrolyte is sucked into the battery from the injection cup 3. The injection cup 3 then returns to normal pressure, and the secondary cylinder 103 blocks the injection port 3b again.

[0033] The rotating table 1 continues to rotate the battery box 2 to the static station 101c. When the battery is in the static station 101c, the high vacuum air control valve 306a, the pressure relief air control valve 306b and the positive pressure nitrogen air control valve 307d are switched in turn, that is, vacuum is first drawn, then normal pressure is restored, and then nitrogen is pressurized. The above positive and negative pressure cycle treatment process can quickly empty the residual liquid in the liquid filling cup and the bubbles in the battery.

[0034] After the electrolyte refilling is completed, the filling cup 3 needs to be cleaned by DMC. Fig.10 As shown, the lifting cylinder 102 lifts the injection cup 3 out of the battery, the short-stroke cylinder 802 lowers the lifting platform 805, and the loading cylinder 806 pushes the waste liquid box 807 to the bottom of the injection nozzle 3a, and then the short-stroke cylinder 802 shortens to make the contour joint 304 and the injection nozzle 3a have an interference fit. The secondary cylinder 103 presses the plug 4 against the injection port 3b, and the positive-pressure nitrogen gas control valve 306d sprays compressed nitrogen into the injection cup to blow the residual liquid into the waste liquid box 807. Then the DMC liquid storage tank 809 injects the DMC cleaning liquid into the waste liquid box 807, and the waste liquid containing crystals is uniformly discharged from the cleaning interface 809a. At this point, the whole set of process actions is completed.

[0035] In summary, the present invention provides a secondary fluid replenishment device for a new energy battery 100, which realizes the rapid shear coordination between the liquid filling cup and multiple gas sources through an integrated carrier plate, and realizes the rhythm optimization of the process flow through redundant sections of a rotating table structure. At the same time, structural details are optimized for residual liquid cleaning and loading and unloading to optimize the stability and reliability of the equipment operation, ensure the accurate and efficient execution of the fluid replenishment process, further improve the level of automation, and solve the automation, precision and efficiency problems of the fluid replenishment process in the battery production line.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A new energy battery secondary liquid replenishing device, characterized in that: It includes a rotating table, a battery material box, a liquid injection cup, a plug, a liquid injection station, a liquid injection pipe, and a liquid injection pump cabinet. The rotating table is surrounded by several vertical surfaces, each of which is equipped with a battery material box and a lifting cylinder. A group of liquid injection cups are hung below the lifting cylinder. The liquid injection cups are connected to liquid injection nozzles and docked with the battery material box. The liquid injection cups are externally connected to positive and negative pressure air sources. The liquid injection cups have liquid injection ports and are equipped with plugs. A secondary cylinder with a unified lifting plug is hung below the lifting cylinder. The rotating table is connected to the liquid injection station. The liquid injection station is provided with a liquid injection pipe docked with the liquid injection port. The liquid injection pipe is externally connected to the liquid injection pump cabinet via a diaphragm valve.

2. The new energy battery secondary liquid replenishing device according to claim 1, characterized in that: A membrane plug valve is arranged between the liquid injection nozzle and the liquid injection cup; the entire group of liquid injection cups is packaged on the bottom surface of an integrated carrier, and an air path connected in parallel to each of the liquid injection cups is opened in the integrated carrier. The integrated carrier is provided with an external connector, and the air path is connected from the connector and connected to an air distribution row, and the air distribution row is connected to the corresponding air source via a high vacuum air control valve, a pressure relief air control valve, a low vacuum air control valve and a positive pressure nitrogen air control valve.

3. The new energy battery secondary liquid replenishing device according to claim 2, characterized in that: The low vacuum air-controlled valve is used for vacuuming before battery refilling; the high vacuum air-controlled valve is used for degassing after battery refilling; the pressure relief air-controlled valve is used for switching between positive and negative pressure cycles after battery refilling; the positive pressure nitrogen air-controlled valve is used for pressurizing and discharging liquid from the filling cup after battery refilling; the membrane plug valve is normally open, the plug has an interference fit with the filling port, and the filling nozzle is connected to the battery and has an interference fit.

4. The new energy battery secondary liquid replenishing device according to claim 1, characterized in that: The liquid injection station is provided with a high platform, a horizontally retractable pushing cylinder is arranged in the center of the high platform, a vertical bracket is connected to the front end of the pushing cylinder, a Z-axis cylinder is installed on the vertical bracket, a horizontally arranged pipeline carrier is connected to the lower part of the Z-axis cylinder, the liquid injection pipe is integrated on the pipeline carrier and corresponds to the liquid injection port one by one; when the membrane plug valve is normally closed, it is used for liquid injection buffering of the liquid injection cup, the plug is separated from the liquid injection port, and the liquid injection nozzle is connected to the battery and has an interference fit; when the membrane plug valve is normally open, it is used for battery liquid replenishment, the plug is interference fit with the liquid injection port, and the liquid injection nozzle is connected to the battery and has an interference fit.

5. The new energy battery secondary liquid replenishing device according to claim 1, characterized in that: The battery material box is open upwards, and a plurality of equally spaced partitions are arranged inside the battery material box, the partitions surround and form a plurality of accommodating cavities, the inner walls of the accommodating cavities are provided with insulating plates, and the accommodating cavities correspond one to one with the liquid injection nozzles.

6. The new energy battery secondary liquid replenishing device according to claim 1, characterized in that: The rotating table is installed on a slewing bearing, and the slewing bearing is connected to a driving motor through gear transmission. The rotating table is divided into a loading station, a liquid injection station and a plurality of static stations for each vertical surface in sequence; the liquid injection station is arranged at the liquid injection station.

7. The new energy battery secondary liquid replenishing device according to claim 6, characterized in that: A residual liquid treatment station is arranged at the loading station, and a hanging platform is set up at the residual liquid treatment station. The hanging platform is connected to a lifting platform through a short-stroke cylinder and a plurality of guide columns inserted in linear bearings. A loading cylinder for horizontally pushing the opposite surface is arranged on the bottom surface of the lifting platform. A waste liquid box is arranged at the front end of the loading cylinder. The waste liquid box is provided with an upper cover, and the upper cover is integrated with a plurality of contoured joints corresponding to the liquid injection nozzles one by one; the waste liquid box has an inclined lower bottom surface, and a cleaning interface and a waste liquid interface are arranged at both ends of the lower bottom surface. The cleaning interface is externally connected to a DMC liquid storage tank, and the waste liquid interface is externally connected to a residual liquid tank.

8. The new energy battery secondary liquid replenishing device according to claim 6, characterized in that: The facade is provided with a carrier for carrying the battery box, and the carrier is provided with inner pin columns and inner pin sleeves matching the battery box; a pair of conveying brackets respectively pulled by linear modules are connected to the loading station, and the conveying brackets are matched in pairs at the two ends of the bottom of the battery box, and the bottom of the conveying bracket carries a lifting cylinder, and the two wings of the conveying bracket are attached to a carrier with a pair of Z-axis line rails, and the spacing between the conveying brackets is greater than the length of the battery box, and the conveying bracket is provided with outer pin columns and outer pin sleeves matching the battery box, and the bottom of the conveying bracket is provided with a slide cylinder, and a pair of mutually matching travel sensing photoelectric switches and induction sheets are installed on the slide cylinder and the carrier.

9. The new energy battery secondary liquid replenishing device according to claim 8, characterized in that: A battery box removal device is arranged between the linear modules within the travel range, and the battery box removal device includes a lifting cylinder and a template horizontally arranged at the upper end of the lifting cylinder, a plurality of top columns are erected on the template, a plurality of through holes corresponding to the top columns are opened at the bottom of the battery material box, a battery pad is arranged in the battery material box, a counterweight guard plate is stacked at the bottom of the battery pad, and the top column evenly covers the entire counterweight guard plate and is connected to the counterweight guard plate through the lifting cylinder.

10. The new energy battery secondary liquid replenishing device according to claim 8, characterized in that: The linear module is arranged with a rack at the other end of the opposing rotating table, which is equal to the upper surface of the battery box. Two rows of photoelectric sensors are horizontally installed on the rack. The photoelectric sensors are used to detect the loading height of the battery in the battery box. A gantry is set up between the linear modules within the travel range. A downward pressure cylinder is suspended on the gantry. A pressure ruler is horizontally suspended on the downward pressure cylinder. The size of the pressure ruler is matched to cover the entire battery box. The downward pressure cylinder and the photoelectric sensor cooperate with each other.

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