A battery liquid injection device

Abstract

The application relates to the technical field of battery processing, in particular to a battery liquid injection device. The battery liquid injection device comprises a battery clamping mechanism, a liquid injection mechanism and a liquid receiving mechanism. The battery clamping mechanism is used for clamping a battery to be injected into a liquid injection position. The liquid injection mechanism is located above the battery clamping mechanism. The liquid injection mechanism comprises an expanding rod assembly and a liquid injection assembly. The expanding rod assembly can be lowered and inserted into an aluminum plastic film of the battery to be injected to expand the opening of the aluminum plastic film. The liquid injection assembly can be lowered and inserted into the expanded aluminum plastic film to inject the battery to be injected with liquid. When the liquid injection assembly is lifted and reset relative to the battery clamping mechanism, the liquid receiving mechanism can be inserted into the upper part of the battery to be injected and below the liquid injection assembly to receive the electrolyte dropped from the liquid injection assembly, so that the electrolyte on the liquid injection assembly is prevented from dropping onto the surface of the battery to be injected and causing pollution, and the yield is improved. In addition, the opening of the aluminum plastic film is expanded by the expanding rod assembly, and the aluminum plastic film can be quickly restored to the opening.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, and in particular to a battery electrolyte injection device. Background Technology

[0002] In existing pouch lithium batteries, the electrolyte filling process typically involves first opening the opening in the aluminum-plastic film on the battery, then using two retaining walls to prop open the opening so that the filling needle can be inserted to inject electrolyte. However, this method of propping open the opening with the two retaining walls can easily lead to excessive expansion of the opening, damaging the aluminum-plastic film and slowing its healing process, thus affecting the battery's quality. Furthermore, when the filling needle is lifted and reset after filling, residual electrolyte on the needle can drip onto the battery surface, contaminating it and significantly reducing the yield rate.

[0003] Therefore, there is an urgent need to invent a battery liquid injection device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a battery electrolyte injection device to prevent electrolyte from dripping onto the surface of the battery to be injected and causing contamination, and to improve the recovery speed of the aluminum-plastic film opening and improve the yield.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery electrolyte filling device, comprising:

[0007] The battery clamping mechanism is configured to clamp the battery to be injected into the injection position;

[0008] The liquid injection mechanism, located above the battery clamping mechanism, includes a flaring rod assembly and an injection assembly. The flaring rod assembly can descend relative to the battery clamping mechanism and insert into the aluminum-plastic film of the battery to be injected, thereby flaring the opening of the aluminum-plastic film. The injection assembly can descend relative to the battery clamping mechanism and insert into the flared aluminum-plastic film to inject liquid into the battery.

[0009] The liquid receiving mechanism extends above the battery to be injected and below the liquid injection assembly when the liquid injection assembly rises and resets relative to the battery clamping mechanism, so as to receive the electrolyte dripping from the liquid injection assembly.

[0010] As a preferred embodiment, the injection mechanism further includes:

[0011] Injection drive assembly; and

[0012] A lifting plate assembly is connected to the output end of the liquid injection drive assembly, which can drive the lifting plate assembly to move up and down relative to the battery clamping mechanism. The flared rod assembly and the liquid injection assembly are both slidably connected to the lifting plate assembly. The flared rod assembly can slide along the lifting plate assembly to be directly opposite the battery to be injected, and the liquid injection assembly can also slide along the lifting plate assembly to be directly opposite the battery to be injected.

[0013] As a preferred embodiment, the flaring rod assembly includes:

[0014] A flaring rod drive component is disposed on the lifting plate assembly;

[0015] A flaring rod sliding plate is slidably connected to the lifting plate assembly and connected to the output end of the flaring rod drive component; and

[0016] Multiple flaring rods are used to flare the opening of the aluminum-plastic film. The multiple flaring rods are spaced apart on the flaring rod sliding plate. The flaring rod driving component can drive the flaring rod sliding plate to slide relative to the lifting plate assembly so that each flaring rod is positioned directly opposite a battery to be injected.

[0017] As a preferred embodiment, the flaring bar assembly further includes a first guide member, which includes a first guide rail and a first slider that are slidably connected. The first guide rail extends along the sliding direction of the flaring bar sliding plate, the first guide rail is fixed on the lifting plate assembly, and the first slider is fixed on the flaring bar sliding plate.

[0018] As a preferred embodiment, the injection assembly includes:

[0019] The injection needle drive is mounted on the lifting plate assembly;

[0020] The injection needle sliding plate is slidably connected to the lifting plate assembly and connected to the output end of the injection needle drive; and

[0021] Multiple injection needles are used to inject liquid into the battery to be injected. The multiple injection needles are spaced apart on the injection needle sliding plate. The injection needle driving member can drive the injection needle sliding plate to slide relative to the lifting plate assembly so that each injection needle is positioned directly opposite a battery to be injected.

[0022] As a preferred embodiment, the liquid receiving mechanism includes:

[0023] Liquid-wet drive components; and

[0024] A liquid receiving box is connected to the output end of the liquid receiving drive component, which is configured to drive the liquid receiving box to translate and switch between an avoidance position and a liquid receiving position.

[0025] As a preferred embodiment, the battery electrolyte filling device further includes:

[0026] An opening mechanism is configured to hold the opening in the aluminum-plastic film of the battery to be injected, which is held by the battery clamping mechanism.

[0027] As a preferred embodiment, the opening mechanism includes:

[0028] Install components;

[0029] An opening drive assembly is disposed on the mounting assembly; and

[0030] Two sets of suction nozzle assemblies are arranged opposite each other, and the aluminum-plastic film of the battery to be injected at the injection position is located between the two sets of suction nozzle assemblies. The suction nozzle assembly is slidably connected to the mounting assembly. The opening driving assembly can synchronously drive the two sets of suction nozzle assemblies to move closer to each other to adsorb the corresponding side position of the aluminum-plastic film. The opening driving assembly can also synchronously drive the two sets of suction nozzle assemblies to move away from each other to adsorb and open the opening of the aluminum-plastic film.

[0031] As a preferred embodiment, the suction nozzle assembly includes:

[0032] A suction nozzle slide plate is connected to the output end of the opening drive assembly and is slidably connected to the mounting assembly; and

[0033] Multiple suction nozzles are provided, with multiple suction nozzles spaced apart on one side of the suction nozzle slide plate facing another suction nozzle assembly. The suction nozzles are capable of adsorbing the aluminum-plastic film, and each suction nozzle corresponds to the aluminum-plastic film of one of the batteries to be injected with liquid.

[0034] As a preferred embodiment, the suction nozzle assembly further includes:

[0035] An elastic element is provided, wherein the suction nozzle is movably connected to the suction nozzle sliding plate, and both ends of the elastic element abut against the suction nozzle sliding plate and the suction nozzle, respectively.

[0036] As a preferred embodiment, the battery clamping mechanism includes:

[0037] Lifting drive component;

[0038] A clamping assembly is configured to clamp and fix the battery to be injected with liquid. The clamping assembly is connected to the output end of the lifting drive assembly, which can lift the clamping assembly to lift the battery to be injected with liquid to the injection position.

[0039] As a preferred embodiment, the clamping assembly includes:

[0040] A clamping mounting plate is connected to the output end of the lifting drive assembly; and

[0041] Multiple clamps are spaced apart on the clamping mounting plate, and each clamp is capable of clamping and fixing one battery to be injected with liquid.

[0042] The beneficial effects of this invention are:

[0043] This invention provides a battery electrolyte injection device, which includes a battery clamping mechanism, an injection mechanism, and a receiving mechanism. The battery clamping mechanism clamps the battery to be injected to the injection position. The injection mechanism is located above the battery clamping mechanism and includes a flaring rod assembly and an injection assembly. The flaring rod assembly can descend relative to the battery clamping mechanism and insert into the aluminum-plastic film of the battery with an opening to flare the opening of the aluminum-plastic film. The injection assembly can descend relative to the battery clamping mechanism and insert into the flared aluminum-plastic film to inject electrolyte into the battery. By designing the flaring rod assembly to flare the opening of the aluminum-plastic film, the opening of the aluminum-plastic film is not excessively enlarged, improving the recovery speed of the opening of the aluminum-plastic film and preventing damage to the aluminum-plastic film, thus ensuring the quality of the battery to be injected. In addition, when the electrolyte injection assembly rises and resets relative to the battery clamping mechanism, the electrolyte receiving mechanism can extend above the battery to be injected and below the electrolyte injection assembly to receive the electrolyte dripping from the electrolyte injection assembly. This prevents the electrolyte on the electrolyte injection assembly from dripping onto the surface of the battery to be injected and causing contamination, thereby improving the yield rate. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the battery electrolyte injection device provided in an embodiment of the present invention. Figure 1 ;

[0045] Figure 2 This is a schematic diagram of the battery electrolyte injection device provided in an embodiment of the present invention. Figure 2 ;

[0046] Figure 3 This is a schematic diagram of the liquid receiving mechanism provided in an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the liquid injection mechanism, liquid receiving mechanism, and opening mechanism provided in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the structure of the opening mechanism provided in an embodiment of the present invention after the support frame is removed.

[0049] In the picture:

[0050] 100. Battery electrolyte filling device; 200. Battery to be filled; 210. Aluminum-plastic film;

[0051] 1. Battery clamping mechanism; 11. Lifting drive assembly; 12. Clamping assembly; 121. Clamping mounting plate; 122. Chuck;

[0052] 2. Injection mechanism; 21. Flaring rod assembly; 211. Flaring rod drive component; 212. Flaring rod sliding plate; 213. Flaring rod; 214. First guide component; 2141. First guide rail; 2142. First slider; 22. Injection assembly; 221. Injection needle drive component; 222. Injection needle sliding plate; 223. Injection needle; 224. Second guide component; 2241. Second guide rail; 2242. Second slider; 23. Injection drive assembly; 24. Lifting plate assembly;

[0053] 3. Liquid receiving mechanism; 31. Liquid receiving drive assembly; 32. Liquid receiving box;

[0054] 4. Opening mechanism; 41. Mounting assembly; 411. Support frame; 412. Fixing plate; 4121. Opening clearance; 42. Opening drive assembly; 43. Suction nozzle assembly; 431. Suction nozzle sliding plate; 432. Suction nozzle; 433. Elastic element. Detailed Implementation

[0055] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0056] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0059] In existing pouch lithium batteries, the electrolyte filling process typically involves first opening the opening in the aluminum-plastic film on the battery, then using two retaining walls to prop open the opening so that the filling needle can be inserted to inject electrolyte. However, this method of propping open the opening with the two retaining walls can easily lead to excessive expansion of the opening, damaging the aluminum-plastic film and slowing its healing process, thus affecting the battery's quality. Furthermore, when the filling needle is lifted and reset after filling, residual electrolyte on the needle can drip onto the battery surface, contaminating it and significantly reducing the yield rate.

[0060] To solve the above problems, such as Figure 1 and Figure 2As shown, this embodiment provides a battery electrolyte injection device 100, which includes a battery clamping mechanism 1, an injection mechanism 2, and a receiving mechanism 3. The battery clamping mechanism 1 is used to clamp the battery 200 to be injected into the injection position. The injection mechanism 2 is located above the battery clamping mechanism 1. The injection mechanism 2 includes a flaring rod assembly 21 and an injection assembly 22. The flaring rod assembly 21 can descend relative to the battery clamping mechanism 1 and be inserted into the aluminum-plastic film 210 of the battery 200 with an opening to flare the opening of the aluminum-plastic film 210. The injection assembly 22 can descend relative to the battery clamping mechanism 1 and be inserted into the flared aluminum-plastic film 210 to inject electrolyte into the battery 200. When the injection assembly 22 completes the injection and rises back to its original position relative to the battery clamping mechanism 1, the receiving mechanism 3 can extend above the battery 200 and below the injection assembly 22 to receive the electrolyte dripped from the injection assembly 22. By designing the flaring rod assembly 21 to flare the opening of the aluminum-plastic film 210 through insertion, the opening of the aluminum-plastic film 210 is not excessively enlarged, improving the recovery speed of the opening and preventing damage to the aluminum-plastic film 210, thus ensuring the quality of the battery 200 to be injected. Furthermore, when the electrolyte injection assembly 22 rises and resets relative to the battery clamping mechanism 1, the electrolyte receiving mechanism 3 can extend above the battery 200 and below the electrolyte injection assembly 22 to catch the electrolyte dripping from the electrolyte injection assembly 22. This prevents residual electrolyte on the electrolyte injection assembly 22 from dripping onto the surface of the battery 200 and causing contamination, thereby improving the yield rate.

[0061] Combination Figure 2 and Figure 3 The specific structure of the docking liquid mechanism 3 will be described, such as... Figure 2 and Figure 3 As shown, the liquid receiving mechanism 3 includes a liquid receiving drive assembly 31 and a liquid receiving box 32. The output end of the liquid receiving drive assembly 31 is connected to the liquid receiving box 32, and the liquid receiving drive assembly 31 can drive the liquid receiving box 32 to translate between a clearance position and a liquid receiving position. When the liquid injection assembly 22 completes the liquid injection and rises and resets relative to the battery clamping mechanism 1, the liquid receiving drive assembly 31 drives the liquid receiving box 32 to move forward to the liquid receiving position. At this time, the liquid receiving box 32 is located directly below the liquid injection assembly 22 and directly above the multiple batteries 200 to be injected, thereby ensuring that the liquid receiving box 32 receives the electrolyte dripping from the liquid injection assembly 22. When the liquid injection mechanism 2 needs to flare and inject electrolyte into the batteries 200 to be injected, the liquid receiving drive assembly 31 drives the liquid receiving box 32 to move backward to a clearance position, thereby avoiding interference from the liquid receiving box 32 with the downward movement of the flaring rod assembly 21 and the liquid injection assembly 22. Specifically, in this embodiment, the liquid-contacting drive component 31 can be a drive cylinder, which is reliable in operation and easy to control.

[0062] Combination Figure 1 and Figure 2 The specific structure of the battery clamping mechanism 1 will be described, such as... Figure 1 and Figure 2 As shown, the battery clamping mechanism 1 includes a lifting drive assembly 11 and a clamping assembly 12. The clamping assembly 12 is used to clamp and fix the battery 200 to be injected with electrolyte. The clamping assembly 12 is connected to the output end of the lifting drive assembly 11. The lifting drive assembly 11 can lift the clamping assembly 12 to lift the battery 200 to the electrolyte injection position. Specifically, the lifting drive assembly 11 can be a lifting cylinder. The output end of the lifting cylinder is connected to the clamping assembly 12 through a connecting bracket. The lifting cylinder has the advantages of reliable operation and easy control.

[0063] In this embodiment, the clamping assembly 12 includes a clamping mounting plate 121 and a plurality of clamps 122. The clamping mounting plate 121 is connected to the output end of the lifting drive assembly 11 via a connecting frame. The plurality of clamps 122 are spaced apart on the clamping mounting plate 121 in the left-right direction. Each clamp 122 can clamp and fix one battery 200 to be injected with liquid, and the liquid injection mechanism 2 can simultaneously flare and inject liquid into multiple batteries 200 to be injected with liquid, greatly improving the liquid injection efficiency. It should be noted that the structure of the clamps 122 clamping and fixing the batteries 200 to be injected with liquid is prior art and will not be described in detail here.

[0064] like Figure 1 and Figure 2 As shown, the liquid injection mechanism 2 provided in this embodiment also includes a liquid injection drive assembly 23 and a lifting plate assembly 24. The liquid injection drive assembly 23 is mounted on a support plate, and the lifting plate assembly 24 is connected to the output end of the liquid injection drive assembly 23. The liquid injection drive assembly 23 can drive the lifting plate assembly 24 to move up and down along the support plate. The flared rod assembly 21 and the liquid injection assembly 22 are both slidably connected to the lifting plate assembly 24. The flared rod assembly 21 can slide along the lifting plate assembly 24 in the left-right direction to be directly opposite the battery 200 to be injected, and the liquid injection assembly 22 can also slide along the lifting plate assembly 24 in the left-right direction to be directly opposite the battery 200 to be injected. By slidably connecting the flared rod assembly 21 and the liquid injection assembly 22 to the lifting plate assembly 24, both the flared rod assembly 21 and the liquid injection assembly 22 can share a single liquid injection drive assembly 23, reducing the number of parts and thus reducing costs. Specifically, the liquid injection drive assembly 23 can be a servo motor and a lead screw structure, which provides more precise driving.

[0065] Combination Figure 4 The specific structure of the flaring rod assembly 21 is described below, such as... Figure 4As shown, the flaring rod assembly 21 includes a flaring rod drive 211, a flaring rod sliding plate 212, and multiple flaring rods 213. The flaring rod drive 211 is mounted on the lifting plate assembly 24 and installed at one end of the right side of the lifting plate assembly 24. The flaring rod sliding plate 212 is slidably connected to the lifting plate assembly 24 and is connected to the output end of the flaring rod drive 211. Multiple flaring rods 213 are spaced apart on the flaring rod sliding plate 212. The flaring rod drive 211 can drive the flaring rod sliding plate 212 to slide relative to the lifting plate assembly 24 in the left and right direction, so that each flaring rod 213 is positioned directly opposite a battery 200 to be injected with liquid, so that each flaring rod 213 can flare the opening of the aluminum-plastic film 210 of the corresponding battery 200 to be injected with liquid, thereby improving the flaring efficiency. Specifically, the flaring bar drive component 211 can be a drive cylinder, which has the advantages of reliable operation and easy control.

[0066] Preferably, the flaring rod assembly 21 further includes a first guide member 214, which includes a first guide rail 2141 and a first slider 2142 slidably connected. The first guide rail 2141 extends in the left-right direction and is fixed to the lifting plate assembly 24, while the first slider 2142 is fixed to the flaring rod sliding plate 212. By providing the first guide member 214, the sliding of the flaring rod sliding plate 212 is guided, preventing the flaring rod sliding plate 212 from shifting during the sliding adjustment process. This ensures that each flaring rod 213 is aligned with the opening of the corresponding aluminum-plastic film 210, guaranteeing the accuracy of the flaring.

[0067] like Figure 4As shown, the injection assembly 22 includes an injection needle drive 221, an injection needle sliding plate 222, and multiple injection needles 223. The injection needle drive 221 is mounted on the lifting plate assembly 24 and installed at one end of the left side of the lifting plate assembly 24. The injection needle sliding plate 222 is slidably connected to the lifting plate assembly 24 and is connected to the output end of the injection needle drive 221. The flaring rod sliding plate 212 and the injection needle... Liquid needle sliding plates 222 are spaced apart on the lifting plate assembly 24 along the front-to-back direction. Multiple injection needles 223 are spaced apart on the liquid needle sliding plates 222. The injection needle drive unit 221 can drive the injection needle sliding plates 222 to slide relative to the lifting plate assembly 24 in the left-to-right direction, so that each injection needle 223 is directly opposite a battery 200 to be injected, allowing each injection needle 223 to inject liquid into its corresponding battery 200, thus improving injection efficiency. By installing the injection needle drive unit 221 and the flaring rod drive unit 211 at the left and right ends of the lifting plate assembly 24 respectively, and by arranging the flaring rod sliding plate 212 and the injection needle sliding plates 222 spaced apart along the front-to-back direction on the lifting plate assembly 24, the utilization rate of the installation space on the lifting plate assembly 24 is greatly improved, resulting in a more compact structure and a more rational layout. Specifically, the injection needle drive unit 221 can be a drive cylinder, which has the advantages of reliable operation and easy control.

[0068] It should be noted that when flaring the opening of the aluminum-plastic film 210, the flaring rod drive component 211 drives the flaring rod sliding plate 212 to slide to the left along the lifting plate assembly 24 until each flaring rod 213 is aligned with the opening of one of the aluminum-plastic films 210 below. Then, the liquid injection drive component 23 drives the lifting plate assembly 24 to descend, ensuring that the flaring rod 213 is inserted into the corresponding opening of the aluminum-plastic film 210 to complete the flaring. After the flaring operation is completed, the liquid injection drive component 23 drives the lifting plate assembly 24 to rise to the initial position, and then the flaring rod drive component 211 drives the flaring rod sliding plate 212 to slide to the left along the lifting plate assembly 24. 4. Slide to the right to the initial position. At this time, the injection needle drive component 221 drives the injection needle sliding plate 222 to slide to the right along the lifting plate assembly 24 until each injection needle 223 is directly aligned with the opening of the aluminum-plastic film 210 below. Then, the injection drive component 23 drives the lifting plate assembly 24 to descend, ensuring that the injection needle 223 is inserted into the opening of the corresponding aluminum-plastic film 210 to complete the injection. After the injection operation is completed, the injection drive component 23 drives the lifting plate assembly 24 to rise to the initial position. Then, the injection drive component 23 drives the injection needle sliding plate 222 to slide to the left along the lifting plate assembly 24 to the initial position. It should be noted that each injection needle 223 and each flaring rod 213 are located on a horizontal line extending in the left and right direction. Each flaring rod 213 and each injection needle 223 are arranged at equal intervals, and the distance between two adjacent flaring rods 213 is the same as the distance between two adjacent injection needles 223. Furthermore, the distance that the flaring rods 213 and injection needles 223 slide in the left and right direction is less than the distance between two flaring rods 213, thereby avoiding interference between the flaring rods 213 and injection needles 223 during the sliding adjustment process.

[0069] Preferably, the injection assembly 22 further includes a second guide 224, which includes a second guide rail 2241 and a second slider 2242 slidably connected. The second guide rail 2241 extends in the left-right direction and is fixed to the lifting plate assembly 24. The second slider 2242 is fixed to the injection needle sliding plate 222. By providing the second guide 224, the sliding of the injection needle sliding plate 222 is guided, preventing the injection needle sliding plate 222 from shifting during the sliding adjustment process. This ensures that each injection needle 223 is aligned with the opening of the corresponding aluminum-plastic film 210, guaranteeing the accuracy of the injection.

[0070] In addition, such as Figure 4 and Figure 5 As shown, the battery liquid injection device 100 also includes an opening mechanism 4, which is used to open the aluminum-plastic film 210 of the battery to be injected 200 held by the battery clamping mechanism 1, so as to facilitate the insertion of the flaring rod 213 into the opening of the corresponding aluminum-plastic film 210.

[0071] Specifically, the opening mechanism 4 includes a mounting assembly 41, an opening drive assembly 42, and two sets of suction nozzle assemblies 43. The opening drive assembly 42 is mounted on the mounting assembly 41. The two sets of suction nozzle assemblies 43 are arranged opposite each other in the front-to-back direction, with the aluminum-plastic film 210 of the battery 200 to be injected located between the two sets of suction nozzle assemblies 43. The suction nozzle assemblies 43 are slidably connected to the mounting assembly 41. The opening drive assembly 42 synchronously drives the two sets of suction nozzle assemblies 43 to move closer together along the mounting assembly 41 to adsorb the corresponding side of the aluminum-plastic film 210. Then, the opening drive assembly 42 synchronously drives the two sets of suction nozzle assemblies 43 to move away from each other along the mounting assembly 41 to adsorb and open the opening of the aluminum-plastic film 210. Specifically, the opening drive assembly 42 includes a rotary motor and a lead screw. The rotary motor is mounted on the mounting assembly 41, and its output end is connected to the lead screw. The lead screw is threadedly connected to the two sets of suction nozzle assemblies 43. The rotary motor drives the lead screw to rotate, thereby causing the two sets of suction nozzle assemblies 43 to move closer or further apart.

[0072] In this embodiment, the mounting assembly 41 includes a support frame 411 and a fixing plate 412 connected to each other. The rotary motor and the liquid-receiving drive assembly 31 are both mounted on the fixing plate 412, and the fixing plate 412 is provided with an avoidance opening 4121, so that the flaring rod 213 and the injection needle 223 can pass through the avoidance opening 4121 and be inserted into the corresponding aluminum-plastic film 210.

[0073] Combination Figure 5 The specific structure of the suction nozzle assembly 43 is described below, such as... Figure 5 As shown, the suction nozzle assembly 43 includes a suction nozzle sliding plate 431 and multiple suction nozzles 432. The suction nozzle sliding plate 431 is connected to the output end of the opening drive assembly 42 and is slidably connected to the mounting assembly 41. Multiple suction nozzles 432 are spaced apart on one side of the suction nozzle sliding plate 43 facing another suction nozzle assembly 43. The multiple suction nozzles 432 are arranged spaced apart in the left-right direction. The suction nozzles 432 can adsorb aluminum-plastic film 210, and each suction nozzle 432 corresponds to one aluminum-plastic film 210 of the battery to be filled 200. When it is necessary to open the aluminum-plastic film 210, the vacuum generator draws a vacuum on each suction nozzle 432 to ensure that the aluminum-plastic film 210 is adsorbed when the suction nozzle 432 contacts it. After the opening operation is completed, the vacuum generator no longer draws a vacuum on the suction nozzles 432.

[0074] It should be noted that in this embodiment, a guide is also provided between the nozzle sliding plate 431 and the fixed plate 412, thereby guiding the sliding of the nozzle sliding plate 431 in the front-back direction. Since the guide is basically the same as the first guide 214 mentioned above, and is also a guide rail slider structure, it will not be described in detail here.

[0075] Preferably, such as Figure 5As shown, the nozzle assembly 43 also includes an elastic element 433. The nozzle 432 is movably connected to the nozzle sliding plate 431, and both ends of the elastic element 433 abut against the nozzle sliding plate 431 and the nozzle 432, respectively. By providing the elastic element 433, the nozzle 432 is elastically connected to the nozzle sliding plate 431. When the nozzle 432 moves towards the aluminum-plastic film 210 to adsorb the aluminum-plastic film 210, it provides a certain buffering force to the nozzle 432. Specifically, the elastic element 433 can be a spring, which has the advantages of simple structure and easy installation.

[0076] To facilitate understanding of the battery liquid injection device 100 disclosed in this embodiment, it is now combined with... Figures 1-5 The specific working process of the battery electrolyte filling device 100 is explained below:

[0077] First, the lifting drive assembly 11 lifts each battery 200 to be injected into the liquid position, which is clamped and fixed by the clamping assembly 12.

[0078] Next, the opening drive assembly 42 synchronously drives the two sets of suction nozzle assemblies 43 to move closer to each other along the fixed plate 412, and draws a vacuum on each suction nozzle 432 to ensure that the suction nozzle 432 adsorbs the corresponding side position of the aluminum-plastic film 210. Then, the opening drive assembly 42 synchronously drives the two sets of suction nozzle assemblies 43 to move away from each other along the fixed plate 412 to adsorb and open the opening of the aluminum-plastic film 210.

[0079] Next, the flaring rod drive component 211 drives the flaring rod sliding plate 212 to slide to the left along the lifting plate assembly 24 until each flaring rod 213 is directly aligned with the opening of an aluminum-plastic film 210 below. Then, the liquid injection drive component 23 drives the lifting plate assembly 24 to descend. When the flaring rod 213 is inserted into the opening of the aluminum-plastic film 210, it stops descending 2mm away from the battery cell, ensuring that the flaring rod 213 is inserted into the corresponding opening of the aluminum-plastic film 210 to complete the flaring. At this time, the vacuum generator no longer draws a vacuum on the suction nozzle 432, ensuring that the suction nozzle 432 no longer adsorbs the aluminum-plastic film 210. The opening drive component 42 continues to synchronously drive the two sets of suction nozzle assemblies 43 to move away from each other along the fixed plate 412 to reach the avoidance position.

[0080] After the flaring operation is completed, the liquid injection drive assembly 23 drives the lifting plate assembly 24 to rise to the initial position, and then the flaring rod drive component 211 drives the flaring rod sliding plate 212 to slide to the right along the lifting plate assembly 24 to the initial position.

[0081] Next, the injection needle drive 221 drives the injection needle slide plate 222 to slide to the right along the lifting plate assembly 24 until each injection needle 223 is directly opposite the opening of an aluminum-plastic film 210 below. Then, the injection drive assembly 23 drives the lifting plate assembly 24 to descend, ensuring that the injection needle 223 is inserted into the opening of the corresponding aluminum-plastic film 210 to complete the injection.

[0082] When the liquid injection operation is completed, the liquid injection drive assembly 23 drives the lifting plate assembly 24 to rise to the initial position, and the liquid receiving drive assembly 31 drives the liquid receiving box 32 to move forward to the liquid receiving position.

[0083] Finally, the injection drive assembly 23 drives the injection needle slide plate 222 to slide to the left along the lifting plate assembly 24 to the initial position.

[0084] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A battery electrolyte filling device, characterized in that, include: The battery clamping mechanism (1) is configured to clamp the battery (200) to be injected into the injection position; The liquid injection mechanism (2) is located above the battery clamping mechanism (1). The liquid injection mechanism (2) includes a flaring rod assembly (21) and a liquid injection assembly (22). The flaring rod assembly (21) can descend relative to the battery clamping mechanism (1) and be inserted into the aluminum-plastic film (210) of the battery to be injected with liquid, so as to flare the opening of the aluminum-plastic film (210). The liquid injection assembly (22) can descend relative to the battery clamping mechanism (1) and be inserted into the flared aluminum-plastic film (210) to inject liquid into the battery to be injected with liquid. as well as Liquid receiving mechanism (3): When the liquid injection assembly (22) rises and resets relative to the battery clamping mechanism (1), the liquid receiving mechanism (3) can extend into the top of the battery to be injected (200) and the bottom of the liquid injection assembly (22) to receive the electrolyte dripped from the liquid injection assembly (22). The liquid injection mechanism (2) further includes: Liquid injection drive assembly (23); as well as The lifting plate assembly (24) is connected to the output end of the liquid injection drive assembly (23), which can drive the lifting plate assembly (24) to rise and fall relative to the battery clamping mechanism (1). The flared rod assembly (21) and the liquid injection assembly (22) are both slidably connected to the lifting plate assembly (24). The flared rod assembly (21) and the liquid injection assembly (22) share a liquid injection drive assembly (23). The flared rod assembly (21) can slide along the lifting plate assembly (24) to be directly opposite the battery (200) to be injected with liquid, and the liquid injection assembly (22) can also slide along the lifting plate assembly (24) to be directly opposite the battery (200) to be injected with liquid.

2. The battery electrolyte injection device according to claim 1, characterized in that, The flaring rod assembly (21) includes: A flaring rod drive (211) is disposed on the lifting plate assembly (24); A flaring rod sliding plate (212) is slidably connected to the lifting plate assembly (24) and connected to the output end of the flaring rod drive (211); and Multiple flaring rods (213) are used to flare the opening of the aluminum-plastic film (210). The multiple flaring rods (213) are spaced apart on the flaring rod sliding plate (212). The flaring rod driving member (211) can drive the flaring rod sliding plate (212) to slide relative to the lifting plate assembly (24) so ​​that each flaring rod (213) is positioned directly opposite a battery (200) to be injected with liquid.

3. The battery electrolyte injection device according to claim 2, characterized in that, The flaring bar assembly (21) further includes a first guide (214), which includes a first guide rail (2141) and a first slider (2142) that are slidably connected. The first guide rail (2141) extends along the sliding direction of the flaring bar sliding plate (212), and the first guide rail (2141) is fixed on the lifting plate assembly (24). The first slider (2142) is fixed on the flaring bar sliding plate (212).

4. The battery electrolyte injection device according to claim 1, characterized in that, The injection assembly (22) includes: The injection needle drive (221) is disposed on the lifting plate assembly (24); The injection needle sliding plate (222) is slidably connected to the lifting plate assembly (24) and connected to the output end of the injection needle drive (221); and Multiple injection needles (223) are used to inject liquid into the battery (200) to be injected. The multiple injection needles (223) are spaced apart on the injection needle sliding plate (222). The injection needle drive (221) can drive the injection needle sliding plate (222) to slide relative to the lifting plate assembly (24) so ​​that each injection needle (223) is positioned directly opposite a battery (200) to be injected.

5. The battery electrolyte filling device according to any one of claims 1 to 4, characterized in that, The liquid receiving mechanism (3) include: Liquid-wet drive assembly (31); and The liquid receiving box (32) is connected to the output end of the liquid receiving drive assembly (31), which is configured to drive the liquid receiving box (32) to switch between a clearance position and a liquid receiving position.

6. The battery electrolyte filling device according to any one of claims 1 to 4, characterized in that, The battery electrolyte filling device further includes: The opening mechanism (4) is configured to open the aluminum-plastic film (210) of the battery to be injected (200) held by the battery clamping mechanism (1).

7. The battery electrolyte injection device according to claim 6, characterized in that, The opening mechanism (4) includes: Install components (41); An opening drive assembly (42) is disposed on the mounting assembly (41); and Two sets of suction nozzle assemblies (43) are arranged opposite to each other, and the aluminum-plastic film (210) of the battery (200) to be injected at the injection position is located between the two sets of suction nozzle assemblies (43). The suction nozzle assembly (43) is slidably connected to the mounting assembly (41). The opening drive assembly (42) can synchronously drive the two sets of suction nozzle assemblies (43) to move closer to each other to adsorb the corresponding side position of the aluminum-plastic film (210). The opening drive assembly (42) can also synchronously drive the two sets of suction nozzle assemblies (43) to move away from each other to adsorb and open the opening of the aluminum-plastic film (210).

8. The battery electrolyte filling device according to claim 7, characterized in that, The suction nozzle assembly (43) includes: The nozzle slide plate (431) is connected to the output end of the opening drive assembly (42) and is slidably connected to the mounting assembly (41); and Multiple suction nozzles (432) are provided at intervals on one side of the suction nozzle slide plate (431) facing another suction nozzle assembly (43). The suction nozzles (432) are capable of adsorbing the aluminum-plastic film (210), and each suction nozzle (432) corresponds to the aluminum-plastic film (210) of one of the batteries (200) to be injected with liquid.

9. The battery electrolyte filling device according to claim 8, characterized in that, The suction nozzle assembly (43) also includes: The elastic element (433) is movably connected to the suction nozzle (432) and the suction nozzle sliding plate (431), and the two ends of the elastic element (433) abut against the suction nozzle sliding plate (431) and the suction nozzle (432) respectively.

10. The battery electrolyte filling device according to any one of claims 1 to 4, characterized in that, The battery clamping mechanism (1) includes: Lifting drive assembly (11); The clamping assembly (12) is configured to clamp and fix the battery (200) to be injected with liquid. The clamping assembly (12) is connected to the output end of the lifting drive assembly (11). The lifting drive assembly (11) can lift the clamping assembly (12) to lift the battery (200) to the injection position.

11. The battery electrolyte filling device according to claim 10, characterized in that, The clamping assembly (12) includes: The clamping mounting plate (121) is connected to the output end of the lifting drive assembly (11); and Multiple clamps (122) are spaced apart on the clamping mounting plate (121), and each clamp (122) can clamp and fix one of the batteries (200) to be injected with liquid.

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