Battery cell liquid injection device

Abstract

The utility model relates to a battery cell liquid injection device which comprises a liquid injection jig which comprises a mounting part and a plurality of liquid injection parts uniformly distributed on the mounting part, and the center distance between two adjacent liquid injection parts is a set center distance; the battery cell carrier is located on one side of the liquid injection jig in the first direction, the battery cell carrier comprises a bearing part, and a plurality of limiting intervals matched with the length and width of the battery cells are evenly distributed on the bearing part; the adjusting mechanism is used for adjusting the lengths and / or the widths of the multiple limiting intervals; and in the first direction, the liquid injection ports of the plurality of battery cells arranged in the corresponding limiting intervals are in one-to-one correspondence with the liquid injection ports of the plurality of liquid injection parts. According to the utility model, the lengths and / or widths of the plurality of limiting intervals can be adjusted through the adjusting mechanism, so that the battery cell fixing device can adapt to battery cells with different sizes; the liquid injection ports of the plurality of battery cells arranged in the corresponding limiting intervals are in one-to-one correspondence with the liquid injection ports of the plurality of liquid injection parts, so that one-time liquid injection can be performed on the plurality of battery cells, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a kind of battery cell liquid injection device. BACKGROUND

[0002] In new energy lithium battery industry, battery cell liquid injection work step is the core important step. According to the different process formula, battery cell is in a production line and is often related to multiple liquid injection work station situation, but for single pull line, battery cell liquid injection work step still stays in the following steps: single battery cell is grabbed and placed in corresponding clamp, the number of clamp is often only 3 to 6, then the single battery cell on 3 to 6 clamps is driven to fixed liquid injection port by the movement of carrier to carry out liquid injection.

[0003] Since the number of battery cells that can be injected by the above liquid injection work step is very limited, the liquid injection process is very limited for mass production line, and the replacement of product (single battery cell) according to the production line will cause the replacement of clamp. Therefore, the above liquid injection work step needs to replace the clamp before execution every time the production line changes the product, so it is very time-consuming and inconvenient. SUMMARY

[0004] The application embodiment provides a battery cell liquid injection device to solve the technical problems of limited liquid injection rhythm and frequent replacement of clamp in the prior art.

[0005] To solve the above technical problems, the utility model embodiment provides a kind of battery cell liquid injection device, comprising:

[0006] Liquid injection fixture, it includes installation part and multiple for the liquid injection of battery cell liquid injection part that is evenly distributed on the installation part, the center distance between adjacent two liquid injection parts is set center distance;

[0007] Battery cell carrier, it is located in the side of the liquid injection fixture along the first direction, and the battery cell carrier includes the carrying part for carrying multiple battery cells, and multiple limiting intervals that are adapted to the length and width of battery cell are evenly distributed on the carrying part;And,

[0008] Adjusting mechanism, it is used for adjusting the length and / or width of multiple limiting intervals;

[0009] Wherein, in the first direction, the liquid injection port of multiple battery cells placed in corresponding limiting interval and the liquid injection port of multiple liquid injection parts are one-to-one corresponding.

[0010] In an embodiment of the utility model, the adjusting mechanism includes length adjusting mechanism, length adjusting mechanism includes multiple sets of first length limit body and second length limit body who sets up in pair and first drive assembly, first length limit body and second length limit body are located length direction both sides of the limiting interval respectively, first drive assembly is used to drive first length limit body and second length limit body synchronous close or far away, wherein, the length direction of limiting interval is second direction, second direction and first direction are perpendicular to each other;

[0011] The first drive assembly includes a drive motor and an electric slide rail connected with the drive motor, the electric slide rail includes a track and two sliders sliding in opposite directions on the track, the two sliders are respectively and fixedly connected with the first length limit body and the second length limit body one by one.

[0012] In an embodiment of the utility model, the length adjusting mechanism further includes a guide assembly, the guide assembly includes a guide column and at least two guide sleeves matched with the guide column, the first length limit body and the second length limit body are respectively fixedly connected with at least one guide sleeve.

[0013] In an embodiment of the utility model, all first length limit bodies of the length adjusting mechanism are connected in series to form a first limit body assembly through a first connecting body, and all second length limit bodies of the length adjusting mechanism are connected in series to form a second limit body assembly through a second connecting body.

[0014] The first drive assembly is connected with the first limit body assembly and the second limit body assembly respectively, and the first drive assembly is used to drive the first limit body assembly and the second limit body assembly to move close to or away from each other synchronously.

[0015] In an embodiment of the utility model, the adjusting mechanism further includes a width adjusting mechanism, the width adjusting mechanism includes multiple sets of first width limit body and second width limit body who sets up in pair and second drive assembly, first width limit body and second width limit body are located width direction both sides of the limiting interval respectively, second drive assembly is used to drive first width limit body and second width limit body each other close or far away, wherein, the width direction of limiting interval is third direction, third direction is perpendicular to first direction and second direction;

[0016] The second drive assembly includes a forward adjusting slider, a forward slide rod, a reverse adjusting slider and a reverse slide rod, the forward slide rod and the reverse slide rod are arranged along the third direction, and the forward adjusting slider and the reverse adjusting slider are arranged along the first direction.

[0017] The forward adjusting slider is in sliding connection with the forward slide rod, the reverse adjusting slider is in sliding connection with the reverse slide rod, the first width limiting body is connected with the forward adjusting slider, and the second width limiting body is connected with the reverse adjusting slider.

[0018] In one embodiment of the utility model, in the second direction, the first width limiting body assembly is formed by connecting the first width limiting bodies in the same row, and the second width limiting body assembly is formed by connecting the second width limiting bodies in the same row.

[0019] In the second direction, the first width limiting body assembly in multiple rows is connected with the forward adjusting slider, and the second width limiting body assembly in multiple rows is connected with the reverse adjusting slider.

[0020] In one embodiment of the utility model, the first width limiting body and the second width limiting body extend in the direction close to each other to form the first extension body and the second extension body; the first extension body and the second extension body form the bearing part monomer, and multiple bearing part monomers form the bearing part.

[0021] In one embodiment of the utility model, the spacing adjusting mechanism is further used for adjusting the distance between the liquid injection jig and the battery cell carrier in the first direction.

[0022] In one embodiment of the utility model, the battery cell carrier further comprises an outer frame plate, and the outer frame plate is provided with a containing groove extending in the first direction.

[0023] The spacing adjusting mechanism comprises an adjusting stud, a positioning screw sleeve and a positioning plate, the adjusting stud is arranged in the containing groove in the first direction, and the positioning screw sleeve is connected with the adjusting stud.

[0024] The mounting part is provided with the positioning plate close to the outer side of the end face of the battery cell carrier, the positioning plate is provided with a positioning hole, and one end of the positioning screw sleeve is exposed from the containing groove and is inserted into the positioning hole.

[0025] The spacing adjusting mechanism further comprises a spring, the spring is sleeved on the positioning screw sleeve, and two ends of the spring are connected with the mounting part and the outer frame plate respectively.

[0026] In one embodiment of the utility model, the working surface and the translation mechanism mounted on the working surface are further provided, the translation mechanism is connected with the battery cell carrier, the translation mechanism is used for driving the battery cell carrier to translate in the second direction or the third direction and to approach or move away from the liquid injection jig, and the first direction, the second direction and the third direction are perpendicular to each other.

[0027] The translation mechanism comprises a translation motor arranged on the working surface, a sliding table of the translation motor is connected with the battery cell carrier, and the sliding table of the translation motor slides along the second direction or the third direction.

[0028] The translation mechanism further comprises a sliding rail, the sliding rail comprises a sliding block and a rail which are adapted to each other, the rail is fixed on the working surface, the sliding block is connected with the battery cell carrier, and the rail is arranged along the second direction or the third direction.

[0029] Compared with the prior art, the above technical scheme of the utility model has at least the following advantages:

[0030] The battery cell liquid injection device provided by the utility model can adjust the length and / or width of multiple limiting intervals through the adjusting mechanism, thereby adapting to the clamping or limiting of battery cells of different sizes, thus improving the adaptability of the battery cell liquid injection device and saving the manufacturing cost of the clamp.

[0031] The battery cell carrier comprises multiple limiting intervals and can accommodate multiple battery cells at a time, in the first direction, the liquid injection ports of the multiple battery cells placed in the corresponding limiting intervals correspond to the liquid injection ports of the multiple liquid injection portions one by one, the liquid injection jig can be directly connected to the battery cell carrier below, thereby completing the liquid injection of multiple battery cells at a time, thus improving the production efficiency and being convenient to operate.

[0032] In addition, the distance between the liquid injection jig and the battery cell carrier can be adjusted through the distance adjusting mechanism, thereby adapting to the height requirement of battery cells of different heights, so that the battery cell liquid injection device can be compatible with battery cells of different lengths, widths and heights, thereby realizing the diversified and modified production of products, which is convenient to operate and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to make the content of the utility model more easily and clearly understood, the utility model will be further described in detail below according to the specific embodiments of the utility model and in combination with the drawings, wherein

[0034] Figure 1 is a structure schematic view of the battery cell liquid injection device in the utility model;

[0035] Figure 2 is a front view of the battery cell liquid injection device in the utility model;

[0036] Figure 3 is a partial structure schematic view of the battery cell liquid injection device in the utility model;

[0037] Figure 4 is a structure schematic view of the liquid injection jig in the utility model;

[0038] Figure 5Is the length adjusting mechanism and the structure schematic view of the battery cell in the utility model;

[0039] Figure 6 Is the structure schematic view of the length adjusting mechanism in the utility model;

[0040] Figure 7 Is the bottom view of the length adjusting mechanism in the utility model;

[0041] Figure 8 Is the structure schematic view of the first driving assembly in the utility model;

[0042] Figure 9 Is the structure schematic view of the width adjusting mechanism and the battery cell in the utility model;

[0043] Figure 10 Is the structure schematic view of the width adjusting mechanism in the utility model;

[0044] Figure 11 Is the bottom view of the width adjusting mechanism in the utility model;

[0045] Figure 12 Is the structure schematic view of the second driving assembly in the utility model;

[0046] Figure 13 Is the partial structure schematic view of the second driving assembly in the utility model;

[0047] Figure 14 Is Figure 1 The enlarged schematic view at A;

[0048] Figure 15 Is Figure 13 The enlarged schematic view at B;

[0049] Figure 16 Is the structure schematic view of the interval adjusting mechanism in the utility model;

[0050] Figure 17 Is the structure schematic view of the adjusting stud and the positioning screw sleeve in the utility model;

[0051] Figure 18 Is the sectional view of the adjusting stud and the positioning screw sleeve in the utility model.

[0052] The description reference signs are as follows: 10, liquid injection jig; 11, mounting portion; 111, outer frame; 112, inner frame; 12, liquid injection portion; 20, battery cell carrier; 21, bearing portion monomer; 211, first extension body; 212, second extension body; 22, limiting interval; 23, length adjusting mechanism; 231, first length limiting body; 232, second length limiting body; 233, driving motor; 234, electric sliding rail; 2341, sliding block; 235, guide column; 236, guide sleeve; 237, support; 24, width adjusting mechanism; 241, first width limiting body; 242, second width limiting body; 243, forward adjusting sliding block; 2431, first slot; 244, forward sliding rod; 245, reverse adjusting sliding block; 2451, second slot; 246, reverse sliding rod; 247, outer frame plate; 25, accommodating groove; 30, pitch adjusting mechanism; 31, adjusting stud; 32, positioning plate; 321, positioning hole; 33, locking rod; 331, locking hook portion; 34, positioning screw sleeve; 35, spring; 40, working surface; 50, sliding rail; 51, sliding block; 52, track; 60, translation motor; 70, connecting plate; 80, battery cell. DETAILED DESCRIPTION

[0053] The utility model will be further explained in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0054] Refer to Figures 1 to 4 The battery cell liquid injection device comprises:

[0055] The liquid injection jig 10 comprises a mounting portion 11 and a plurality of liquid injection portions 12 uniformly distributed on the mounting portion 11 for injecting liquid into the battery cell, and the center distance between two adjacent liquid injection portions 12 is a set center distance. Specifically, the mounting portion 11 comprises an outer frame 111 and an inner frame 112 arranged in the outer frame 111, the outer frame 111 is surrounded by four fixed plates, and the inner frame 112 comprises a plurality of connecting plates connected in a longitudinal and transverse manner, thereby forming a plurality of uniformly distributed fixed cavities, and the liquid injection portion 12 is installed in the corresponding fixed cavity. The longitudinal section of the main body part of the liquid injection portion 12 is in the shape of an isosceles triangle, and a tapered liquid injection port is arranged at the narrowest end of the main body part for docking with the liquid injection port of the battery cell.

[0056] The battery cell carrier 20 is located on one side of the liquid injection jig 10 along a first direction, and the battery cell carrier 20 comprises a bearing portion for bearing a plurality of battery cells, and a plurality of limiting intervals 22 adapted to the length and width of the battery cells are uniformly distributed on the bearing portion; and

[0057] The adjusting mechanism is used for adjusting the length and / or width of the plurality of limiting intervals 22.

[0058] In the first direction, the liquid injection ports of the plurality of battery cells disposed in the corresponding limiting intervals 22 correspond one-to-one to the liquid injection ports of the plurality of liquid injection portions 12 .

[0059] When the battery cell injection device in this embodiment is working, the length and / or width of the limit interval 22 is adjusted by the adjustment mechanism to adapt to the size of the battery cell to be injected, and then a battery cell 80 to be injected is placed in each limit interval 22; finally, the multiple injection parts 12 of the injection jig 10 are aligned one by one with the injection ports 81 of the multiple battery cells 80 placed in the corresponding limit intervals 22 to complete the injection process.

[0060] The battery cell injection device provided in the embodiment of the present invention can adjust the length and / or width of the multiple limiting intervals 22 through the adjustment mechanism, thereby adapting to the clamping or limiting of battery cells of different sizes. This improves the adaptability of the battery cell injection device and saves the manufacturing cost of the fixture.

[0061] The battery cell carrier 20 includes multiple limit intervals 22, which can accommodate multiple battery cells 80 at one time. In the first direction, the injection ports of multiple battery cells placed in the corresponding limit intervals 22 correspond one-to-one to the injection ports of multiple injection parts 12. The injection jig 10 can directly dock with the battery cell carrier 20 located below it, so that the injection action of multiple battery cells 80 can be completed at one time, thereby improving production efficiency, facilitating operation, and saving time and effort.

[0062] See also Figures 5 to 8 As shown, in some embodiments of the battery cell injection device of the present invention, the adjustment mechanism includes a length adjustment mechanism 23, which includes a plurality of first length limiters 231 and second length limiters 232 arranged in pairs and a first driving assembly. The first length limiters 231 and the second length limiters 232 are respectively located on both sides of the length direction of the limiting interval 22. The first driving assembly is used to drive the first length limiters 231 and the second length limiters 232 to move closer or farther away synchronously, wherein the length direction of the limiting interval 22 is the second direction, and the second direction is perpendicular to the first direction.

[0063] like Figure 8 As shown, the first drive component includes a drive motor 233 and an electric slide rail 234 connected to the drive motor 233. The electric slide rail 234 includes a track and two sliders 2341 that slide synchronously in opposite directions on the track. The two sliders 2341 correspond one-to-one to the first length limiter 231 and the second length limiter 232 respectively and are fixedly connected.

[0064] In this embodiment, the length adjustment mechanism 23 adjusts the length of the limiting interval 22 in the following way: the first driving assembly drives the first length limiting body 231 and the second length limiting body 232 to move synchronously towards or away from each other. Specifically, the driving motor 233 drives the electric slide rail 234 to rotate, and the two sliding blocks 2341 of the electric slide rail 234 move synchronously in opposite directions. When the two sliding blocks 2341 move synchronously towards each other, the first length limiting body 231 and the second length limiting body 232 move synchronously towards each other, thereby reducing the length of the limiting interval 22. When the two sliding blocks 2341 move synchronously away from each other, the first length limiting body 231 and the second length limiting body 232 move synchronously away from each other, thereby expanding the length of the limiting interval 22.

[0065] The length adjustment mechanism 23 adjusts the length of the limiting interval 22, thereby adapting to the clamping or limiting of battery cells of different lengths, thus improving the adaptability of the battery cell liquid injection device. In addition, the length adjustment mechanism 23 in this embodiment includes the first length limiting body 231, the second length limiting body 232, and the first driving assembly, which has a simple and reasonable structure, high automation degree, and convenient operation, and saves time.

[0066] Referring to Figures 5 to 7 The battery cell liquid injection device of the utility model, in some embodiments, the length adjustment mechanism 23 further includes a guide assembly, the guide assembly includes a guide column 235 and at least two guide sleeves 236 matched with the guide column 235, and the first length limiting body 231 and the second length limiting body 232 are fixedly connected with at least one guide sleeve 236, wherein the two ends of the guide column 235 are fixed on the following base plate 70 via a support 237.

[0067] The first length limiting body 231 and the second length limiting body 232 are moved along the guide column 235 by the guide sleeve 236, thereby playing a guiding role, and the first length limiting body 231 and the second length limiting body 232 can be moved smoothly and smoothly.

[0068] Referring to Figure 7 The battery cell liquid injection device of the utility model, in some embodiments, all the first length limiting bodies 231 of the length adjustment mechanism 23 are connected in series to form a first limiting body assembly through a first connecting body 238, and all the second length limiting bodies 232 of the length adjustment mechanism 23 are connected in series to form a second limiting body assembly through a second connecting body 239.

[0069] The first driving assembly is connected with the first limiting body assembly and the second limiting body assembly respectively, and the first driving assembly is used to drive the first limiting body assembly and the second limiting body assembly to move synchronously towards or away from each other.

[0070] Specifically, referring to Figure 7As shown, the plurality of first length limit bodies 231 arranged along the third direction and in the same straight line (in the same row) are fixed on the first connecting plate 2381 extending along the third direction, that is, the first connecting plate 2381 connects the plurality of first length limit bodies 231 in series; according to the distribution of the battery cell, a plurality of first connecting plates 2381 are arranged along the third direction, and the plurality of first connecting plates 2381 are fixedly connected with the second connecting plate 2382 extending along the second direction, that is, the second connecting plate 2382 connects the plurality of first connecting plates 2381 in series, wherein the first direction, the second direction and the third direction are perpendicular to each other, the second direction is the length of the limiting interval 22, and the third direction is the width direction of the limiting interval 22; the first connecting plate 2381 and the second connecting plate 2382 constitute the first connecting body 238.

[0071] The first connecting body 238 formed by the first connecting plate 2381 and the second connecting plate 2382 can connect the plurality of first length limit bodies 231 in series. By the same principle, the first connecting body 238 formed by another first connecting plate 2381 and second connecting plate 2382 can connect the plurality of second length limit bodies 232 in series.

[0072] Wherein, each first connecting plate 2381 is connected with at least one guide sleeve 236, and the plurality of guide sleeves 236 arranged along the third direction and in the same straight line are used in cooperation with the same guide column 235;

[0073] One slider 2341 of the electric sliding rail 234 is fixedly connected with any first connecting plate 2381 for connecting the plurality of first length limit bodies 231 in the same row in series, and the other slider 2341 of the electric sliding rail 234 is fixedly connected with any second connecting plate 2382 for connecting the plurality of second length limit bodies 232 in the same row in series, so that only one electric sliding rail 234 can drive all the first length limit bodies 231 and the second length limit bodies 232 to move to the set position.

[0074] Referring to Figures 9 to 13 As shown, the battery cell liquid injection device of the utility model, in some embodiments, the adjusting mechanism further includes a width adjusting mechanism 24, the width adjusting mechanism 24 includes a plurality of pairs of first width limit bodies 241 and second width limit bodies 242 and a second driving assembly, the first width limit body 241 and the second width limit body 242 are located at the both sides of the width direction of the limiting interval 22 respectively, and the second driving assembly is used to drive the first width limit body 241 and the second width limit body 242 to approach or move away from each other, wherein the width direction of the limiting interval 22 is the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0075] The second driving assembly comprises a forward adjusting slider 243, a forward slide rod 244, a reverse adjusting slider 245 and a reverse slide rod 246, the forward slide rod 244 and the reverse slide rod 246 are arranged along a third direction, and the forward adjusting slider 243 and the reverse adjusting slider 245 are arranged along a first direction.

[0076] The forward adjusting slider 243 is in sliding connection with the forward slide rod 244, the reverse adjusting slider 245 is in sliding connection with the reverse slide rod 246, the first width limiting body 241 is connected with the forward adjusting slider 243, and the second width limiting body 242 is connected with the reverse adjusting slider 245.

[0077] Specifically, referring to FIG. 2, Figure 13 As shown in the figure, the forward adjusting slider 243 is provided with a first insertion slot 2431, and the end of the first width limiting body 241 is provided with a first insertion block matched with the first insertion slot 2431, and the first width limiting body 241 and the forward adjusting slider 243 are inserted with each other.

[0078] The reverse adjusting slider 245 is provided with a second insertion slot 2451, and the end of the second width limiting body 242 is provided with a second insertion block matched with the second insertion slot 2451, and the second width limiting body 242 and the reverse adjusting slider 245 are inserted with each other.

[0079] The process of adjusting the width size of the limiting interval 22 by the width adjusting mechanism 24 is as follows:

[0080] The second driving assembly drives the multiple sets of first width limiting bodies 241 and second width limiting bodies 242 arranged in pairs to move close to or away from each other; specifically, an external force is applied to the forward adjusting slider 243 and the reverse adjusting slider 245 respectively, so that the forward adjusting slider 243 drives the first width limiting body 241 to move along the forward slide rod 244, and the reverse adjusting slider 245 drives the second width limiting body 242 to move along the reverse slide rod 246, thereby adjusting the width size of the limiting interval 22; when the first width limiting body 241 slides in the direction of approaching the center of the limiting interval 22 by the forward adjusting slider 243 and the second width limiting body 242 slides in the direction of approaching the center of the limiting interval 22 by the reverse adjusting slider 245, the first width limiting body 241 and the second width limiting body 242 move close to each other, thereby reducing the width size of the limiting interval 22; otherwise, the width size of the limiting interval 22 can be expanded.

[0081] It should be noted that the positions of the multiple liquid injection parts 12 are fixed and unchanged, and no matter how the width size of the battery cell 80 changes, when the width size of the limiting interval 22 is adjusted, the liquid injection port of the battery cell 80 placed in the limiting interval 22 can be aligned with the liquid injection port of the liquid injection part 12.

[0082] The width adjusting mechanism 24 can adjust the width size of the limiting interval 22, so as to adapt to the clamping or limiting of the battery cell with different widths, thereby improving the adaptability of the battery cell liquid injection device. In addition, the width adjusting mechanism 24 in the embodiment has the simple and reasonable structure, and is convenient to operate and saves time.

[0083] Referring to Figures 10 to 11 In some embodiments of the battery cell liquid injection device shown in the utility model, a plurality of first width limiting bodies 241 on the same straight line (in the same row) are connected end to end to form a first width limiting body assembly in the third direction, and a plurality of second width limiting bodies 242 on the same straight line (in the same row) are connected end to end to form a second width limiting body assembly.

[0084] In the third direction, a plurality of first width limiting body assemblies are connected with the forward adjusting slider 243, and a plurality of second width limiting body assemblies are connected with the reverse adjusting slider 245.

[0085] In the embodiment, a plurality of first width limiting bodies 241 are connected end to end to form a first width limiting body assembly, and are connected with the forward adjusting slider 243, and a plurality of second width limiting bodies 242 are connected end to end to form a second width limiting body assembly, and are connected with the reverse adjusting slider 245, so as to simplify the overall structure of the width adjusting mechanism 24, and facilitate the simultaneous adjustment of the plurality of first width limiting bodies 241 and the second width limiting bodies 242.

[0086] Referring to Figure 11 In some embodiments of the battery cell liquid injection device shown in the utility model, the first width limiting body 241 and the second width limiting body 242 respectively extend the first extension body 211 and the second extension body 212 in the direction close to each other; the first extension body 211 and the second extension body 212 form a bearing part monomer 21, each bearing part monomer 21 is used for bearing one battery cell 80, and a plurality of bearing part monomers 21 constitute a bearing part, so as to be able to bear a plurality of battery cells 80. The structure of the bearing part in the embodiment is simple and reasonable, and is convenient to manufacture.

[0087] Referring to Figures 14 to 15 In some embodiments of the battery cell liquid injection device shown in the utility model, the spacing adjusting mechanism 30 is further used for adjusting the distance between the liquid injection jig 10 and the battery cell carrier 20 in the first direction.

[0088] The spacing adjusting mechanism 30 can adjust the distance between the liquid injection jig 10 and the battery cell carrier 20, so as to adapt to the battery cell with different heights, so that the battery cell liquid injection device can be compatible with different battery cells in length, width and height, thereby realizing the diversified and modified production of products, which is not only convenient to operate but also improves the work efficiency.

[0089] Referring to Figures 14 to 18 As shown in the drawings, the battery cell liquid injection device in some embodiments further comprises an outer frame plate 247, the outer frame plate 247 is provided with a containing groove 25 extending along the first direction, one end of the containing groove 25 has an opening towards the liquid injection jig 10;

[0090] The distance adjusting mechanism 30 comprises an adjusting stud 31, a positioning screw sleeve 34 and a positioning plate 32, the adjusting stud 31 is arranged in the containing groove 25 along the first direction, the positioning screw sleeve 34 is connected with the adjusting stud 31.

[0091] The mounting portion 11 is provided with the positioning plate 32 on the outer side of the end face of the battery cell carrier 20, the positioning plate 32 is provided with a positioning hole 321, one end of the positioning screw sleeve 34 is exposed from the containing groove 25 through the opening and is inserted into the positioning hole 32; specifically, one end of the positioning screw sleeve 34 is provided with a positioning column 341, the positioning column 341 is matched with the positioning hole 321, so that the insertion between the positioning screw sleeve 34 and the positioning hole 321 is better realized.

[0092] The distance adjusting mechanism 30 further comprises a spring 35, the spring 35 is sleeved on the positioning screw sleeve 34, and the two ends of the spring 35 are connected with the mounting portion 11 and the outer frame plate 247 respectively.

[0093] The process of adjusting the distance between the liquid injection jig 10 and the battery cell carrier 20 by the distance adjusting mechanism 30 in this embodiment is specifically as follows:

[0094] Rotating the adjusting stud 31 makes the positioning screw sleeve 34 move along the extension direction of the adjusting stud 31, so that one end of the positioning screw sleeve 34 is elongated out of the containing groove 25 or is retracted into the containing groove 25, so that the distance between the liquid injection jig 10 and the battery cell carrier 20 can be adjusted; when one end of the positioning screw sleeve 34 is elongated out of the containing groove 25, the positioning screw sleeve 34 pushes the positioning plate 32 out of the corresponding distance in the direction away from the battery cell carrier 20, so that the distance between the liquid injection jig 10 and the battery cell carrier 20 becomes larger, and vice versa, the distance between the liquid injection jig 10 and the battery cell carrier 20 becomes smaller.

[0095] Referring to Figures 15 to 18 As shown in the drawings, the distance adjusting mechanism 30 further comprises a spring 35, the spring 35 is sleeved on one end of the positioning screw sleeve 34 exposed from the containing groove 25, and the two ends of the spring 35 are respectively abutted with the mounting portion 11 and the outer frame plate 247.

[0096] The spring 35 can maintain the contact pressure between the liquid injection jig 10 and the battery cell carrier 20, so as to ensure the sealing between the battery cell 80 and the liquid injection port of the liquid injection portion 12 in the liquid injection process, and prevent the electrolyte from leaking.

[0097] The spacing adjustment mechanism 30 in the embodiment not only plays a role of adjusting the distance between the liquid injection jig 10 and the battery cell carrier 20, but also plays a role of connecting the liquid injection jig 10 and the battery cell carrier 20 through the insertion relationship between the positioning screw sleeve 34 and the positioning hole 32, so as to ensure the stability of the whole device in the liquid injection process.

[0098] Continuing to refer to Figures 14 to 18 As shown, the spacing adjustment mechanism 30 further comprises a locking rod 33, the locking rod 33 is movably connected with a connecting frame extending from the outer wall of the positioning screw sleeve 34 through a rotating shaft, and a free end of the locking rod 33 is bent to form a locking block 34; when the locking rod 33 is in the working position, the locking rod 33 is vertically directed to the liquid injection jig 10 and the locking block 34 is tightly pressed against the positioning plate 32 to form a locking state of the locking block 34 and the positioning plate 32, so as to improve the stability of the connection between the liquid injection jig 10 and the battery cell carrier 20; when it is necessary to adjust the adjusting stud 31, the locking rod 33 is pulled in advance to rotate, so that the locking block 34 is separated from the positioning plate 32.

[0099] Referring to Figures 1 to 2 As shown, the battery cell liquid injection device of the utility model, in some embodiments, further comprises a working surface 40 and a translation mechanism installed on the working surface 40, the translation mechanism is connected with the battery cell carrier 20; specifically, the translation mechanism is fixedly connected with the carrier 20 through a base plate 70, the base plate 70 is equivalent to an intermediate plate connecting the translation mechanism and the carrier 20, and the translation mechanism is used to drive the battery cell carrier 20 to translate in the second direction or the third direction and approach or move away from the liquid injection jig 10, wherein the first direction, the second direction and the third direction are perpendicular to each other, the second direction is the length of the limiting interval 22, and the third direction is the width direction of the limiting interval 22;

[0100] The translation mechanism comprises a translation motor 60 arranged on the working surface 40, and a sliding table of the translation motor 60 is connected with the battery cell carrier 20 through the base plate 70, and the sliding table of the translation motor 60 slides in the second direction or the third direction.

[0101] The translation mechanism further comprises a sliding rail 50, the sliding rail 50 comprises a sliding block 51 and a track 52 matched with each other, the track 52 is fixedly arranged on the working surface 40, and the sliding block 51 is connected with the battery cell carrier 20 through the base plate 70, and the track 52 is arranged in the second direction or the third direction.

[0102] In addition, the driving motor 233 and the guide sleeve 236 of the length adjustment mechanism 23 are fixedly arranged on the base plate 70; and the outer frame plate 247 of the width adjustment mechanism 24 is fixedly arranged on the base plate 70.

[0103] When the translation mechanism is working, the translation motor 60 rotates, and the slide table of the translation motor 60 drives the battery cell carrier 20 to move towards the liquid injection jig 10 in the second direction or the third direction until the battery cell carrier 20 is opposite to the liquid injection jig 10 in the first direction, at which time the liquid injection can be started; once the liquid injection is completed, the slide table of the translation motor 60 drives the battery cell carrier 20 to move away from the liquid injection jig 10 in the second direction or the third direction, so as to facilitate taking out the battery cell 80 which has been injected with liquid. In this process, the slide rail 50 plays a guiding role.

[0104] It should be noted that before the translation mechanism starts to move, the connection between the battery cell carrier 20 and the liquid injection jig 10 also needs to be released, that is, the rotation of the rotation adjusting stud 31 makes the positioning nut 34 retract into the accommodating groove 25 until the adjusting stud 31 is separated from the positioning hole 32.

[0105] Obviously, the above embodiments are only examples for clearly illustrating, and are not a limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An electrode injection device, characterized by comprising: The application relates to an injection tool (10) for injecting electrolyte into an electrode, an electrode carrier (20) for carrying a plurality of electrodes, and an adjusting mechanism for adjusting the length and / or width of a plurality of limiting intervals (22) on the electrode carrier (20). The injection tool (10) comprises a mounting portion (11) and a plurality of injection portions (12) for injecting electrolyte into an electrode, which are uniformly distributed on the mounting portion (11), and the center distance between two adjacent injection portions (12) is a set center distance. The electrode carrier (20) is located on one side of the injection tool (10) along a first direction, and the electrode carrier (20) comprises a carrying portion for carrying a plurality of electrodes, and a plurality of limiting intervals (22) adapted to the length and width of the electrodes are uniformly distributed on the carrying portion. The adjusting mechanism comprises a length adjusting mechanism (23) which comprises a plurality of first length limiting bodies (231) and second length limiting bodies (232) arranged in pairs and a first driving assembly, the first length limiting bodies (231) and the second length limiting bodies (232) are respectively located on both sides of the length direction of the limiting interval (22), and the first driving assembly is used for driving the first length limiting bodies (231) and the second length limiting bodies (232) to synchronously approach or move away from each other, wherein the length direction of the limiting interval (22) is a second direction, and the second direction is perpendicular to the first direction. The first driving assembly comprises a driving motor (233) and an electric sliding rail (234) connected with the driving motor (233), the electric sliding rail (234) comprises a track and two sliders (2341) synchronously sliding in opposite directions on the track, and the two sliders (2341) are respectively and fixedly connected with the first length limiting bodies (231) and the second length limiting bodies (232) in one-to-one correspondence.

2. The liquid injection apparatus for the battery cell according to claim 1, characterized by: The length adjusting mechanism (23) further comprises a guide assembly, the guide assembly comprises a guide column (235) and at least two guide sleeves (236) matched with the guide column (235), and the first length limiting bodies (231) and the second length limiting bodies (232) are respectively fixedly connected with at least one guide sleeve (236). All the first length limiting bodies (231) of the length adjusting mechanism (23) are connected in series to form a first limiting body assembly through a first connecting body (238), and all the second length limiting bodies (232) of the length adjusting mechanism (23) are connected in series to form a second limiting body assembly through a second connecting body (239).

3. The liquid injection apparatus for the battery cell according to claim 2, wherein The first driving assembly is connected with the first limiting body assembly and the second limiting body assembly respectively, and the first driving assembly is used for driving the first limiting body assembly and the second limiting body assembly to synchronously approach or move away from each other.

4. The liquid injection apparatus for the battery cell according to claim 2, wherein ​ ​ 5. The liquid injection apparatus for an electric cell according to any one of claims 2 to 4, wherein The adjusting mechanism further comprises a width adjusting mechanism (24), the width adjusting mechanism (24) comprises a plurality of first width limiting bodies (241) and second width limiting bodies (242) arranged in pairs and a second driving assembly, the first width limiting bodies (241) and the second width limiting bodies (242) are respectively located on both sides of the limiting interval (22) in the width direction, and the second driving assembly is used to drive the first width limiting bodies (241) and the second width limiting bodies (242) to move close to or away from each other, wherein the width direction of the limiting interval (22) is a third direction, and the third direction is perpendicular to the first direction and the second direction; The second driving assembly comprises a forward adjusting slider (243), a forward slide rod (244), a reverse adjusting slider (245) and a reverse slide rod (246), the forward slide rod (244) and the reverse slide rod (246) are arranged along the third direction, and the forward adjusting slider (243) and the reverse adjusting slider (245) are arranged in the first direction; The forward adjusting slider (243) is in sliding connection with the forward slide rod (244), the reverse adjusting slider (245) is in sliding connection with the reverse slide rod (246), the first width limiting body (241) is connected with the forward adjusting slider (243), and the second width limiting body (242) is connected with the reverse adjusting slider (245).

6. The liquid injection apparatus for the battery cell according to claim 5, wherein In the second direction, a plurality of first width limiting bodies (241) in the same row are connected in a loop to form a first width limiting body assembly, and a plurality of second width limiting bodies (242) in the same row are connected in a loop to form a second width limiting body assembly; In the second direction, a plurality of first width limiting body assemblies are connected with the forward adjusting slider (243), and a plurality of second width limiting body assemblies are connected with the reverse adjusting slider (245).

7. The liquid injection apparatus for the battery cell according to claim 5, wherein The first width limiting body (241) and the second width limiting body (242) respectively extend a first extension (211) and a second extension (212) towards each other, the first extension (211) and the second extension (212) form a bearing unit (21), and a plurality of bearing units (21) form the bearing part.

8. The liquid injection apparatus of claim 1, wherein Further comprising a spacing adjusting mechanism (30) for adjusting the distance between the liquid injection jig (10) and the battery cell carrier (20) in the first direction.

9. The liquid injection apparatus for the battery cell according to claim 8, wherein The battery cell carrier (20) further comprises an outer frame plate (247) provided with a containing groove (25) extending in the first direction; The spacing adjusting mechanism (30) comprises an adjusting stud (31), a positioning screw sleeve (34) and a positioning plate (32), the adjusting stud (31) is arranged in the containing groove (25) in the first direction, and the positioning screw sleeve (34) is connected with the adjusting stud (31); The mounting part (11) is provided with a positioning plate (32) outside the end face of the battery cell carrier (20), the positioning plate (32) is provided with a positioning hole (321), one end of the positioning screw sleeve (34) is exposed from the accommodating groove (25) and is inserted into the positioning hole (321); The spacing adjusting mechanism (30) further comprises a spring (35), the spring (35) is sleeved on one end of the positioning screw sleeve (34) exposed from the accommodating groove (25), and the two ends of the spring (35) are respectively abutted with the mounting part (11) and the outer frame plate (247).

10. The liquid injection apparatus of claim 1, wherein Further comprising a working surface (40) and a translation mechanism mounted on the working surface (40), the translation mechanism is connected with the battery cell carrier (20), and the translation mechanism is used for driving the battery cell carrier (20) to translate in the second direction or the third direction and to approach or move away from the liquid injection tool (10), wherein the first direction, the second direction and the third direction are perpendicular to each other; The translation mechanism comprises a translation motor (60) arranged on the working surface (40), a sliding table of the translation motor (60) is connected with the battery cell carrier (20), and the sliding table of the translation motor (60) slides along the second direction or the third direction; The translation mechanism further comprises a slide rail (50), the slide rail (50) comprises a slider (51) and a track (52) which are matched with each other, the track (52) is fixed on the working surface (40), the slider (51) is connected with the battery cell carrier (20), and the track (52) is arranged along the second direction or the third direction.

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