Automatic battery liquid injection device and battery liquid injection machine thereof

Abstract

The invention discloses an automatic battery liquid injection device and a battery liquid injection machine thereof. The automatic battery liquid injection device comprises a liquid injection support, a jacking motor, a jacking shaft, a jacking sliding seat, a liquid injection supporting table, a liquid injection supporting plate, a liquid injection lifting assembly and a liquid injection assembly, and the liquid injection support is arranged on a machine table; the jacking sliding seat is connected to the side wall of the liquid injection support in a sliding mode in the vertical direction. The jacking motor is arranged at the lower part of the liquid injection bracket; the jacking shaft is connected to the output end of the jacking motor; the jacking shaft is in threaded connection with the jacking sliding seat; the liquid injection support platform is horizontally arranged at the upper part of the jacking sliding seat; the liquid injection support plate is vertically arranged on the liquid injection support table; the liquid injection lifting assembly is arranged on the side wall of the liquid injection supporting plate. And the at least two groups of liquid injection assemblies are arranged on the liquid injection lifting assembly at intervals. Synchronous liquid injection of a plurality of batteries is realized, the liquid injection efficiency is improved, a flexible buffer contact battery liquid injection port is provided, the extrusion deformation of the batteries is reduced, and the battery liquid injection port is continuously pressed down through reverse elastic force.

Description

Technical Field

[0001] The present invention relates to the field of automatic production equipment for new energy batteries, and in particular to an automatic battery liquid injection device and a battery liquid injection machine thereof. Background Art

[0002] In the battery production process, one of the processes involved is battery filling. The role of lithium battery electrolyte is to conduct ions between the positive and negative electrodes and serve as a medium for charging and discharging. The filling process is to inject the battery electrolyte into the battery in a quantitative manner after the battery is assembled. The process can be divided into two steps. The first step is to inject the electrolyte into the battery, and the second step is to fully infiltrate the injected electrolyte with the battery's internal pole pieces and diaphragms. The length of the infiltration time will affect the production cost of lithium-ion batteries. In this process, excessive injection volume can easily cause the battery to bulge and cause uneven battery thickness. Too little injection volume will lead to a reduction in battery capacity and cycle times, and uneven injection volume will lead to consistency differences in battery capacity and cycle performance. After the battery filling is completed, the battery filling port and the battery surface need to be cleaned to remove residual electrolyte and other substances on the surface, and then enter the next welding and sealing process to seal the filling port.

[0003] Based on the production process requirements during the battery filling process, it is necessary to design a battery filling device to realize automatic battery filling and improve the filling accuracy and efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned existing technologies and provide a battery automatic filling device and a battery filling machine thereof, which can realize the synchronous filling of multiple batteries, improve the filling efficiency, have a flexible buffer contact battery filling port to reduce the extrusion deformation of the battery, and continuously press down the battery filling port through reverse elastic force to ensure contact tightness and position stability.

[0005] The technical solution adopted by the present invention is as follows: an automatic battery filling device for automatic battery filling, comprising a filling bracket, a jacking motor, a jacking shaft, a jacking slide, a filling support platform, a filling support plate, a filling lifting assembly and a filling assembly, wherein the filling bracket is arranged on the machine platform and is located on the side of the battery platform, the filling bracket is a box-shaped frame with an opening facing upward; the jacking slide is a U-shaped seat structure with an opening facing upward, and the jacking slide is slidably connected to the side wall of the filling bracket in the vertical direction; the jacking motor is arranged at the lower part of the filling bracket, and the output end extends upward through the filling bracket; the jacking shaft is connected to the top The output end of the lifting motor is driven by the lifting motor to rotate; the lifting shaft is threadedly connected to the lifting slide, and the lifting shaft drives the lifting slide to move up and down when it rotates; the injection support is horizontally arranged on the upper part of the lifting slide; the injection support plate is vertically arranged on the side of the injection support close to the battery platform; the injection lifting assembly is arranged on the side wall of the injection support plate and outputs power in the vertical direction; the injection assembly includes at least two groups, and at least two groups of injection assemblies are arranged at intervals on the injection lifting assembly, and are driven by the injection lifting assembly to move up and down synchronously, so as to inject liquid close to the injection port of the battery on the battery platform.

[0006] The liquid injection lifting assembly includes a liquid injection cylinder and a liquid injection slide, wherein the liquid injection cylinder is arranged on the upper part of the liquid injection support plate, and the output end is arranged downward; the liquid injection slide is slidably connected to the side wall of the liquid injection support plate in the vertical direction, and is connected to the output end of the liquid injection cylinder, and is driven by the liquid injection cylinder to move up and down.

[0007] The liquid injection assembly is arranged on the side wall of the liquid injection slide, and the liquid injection assembly includes a liquid injection support, a liquid injection slide rail and a liquid injection extension block, wherein the liquid injection support is vertically arranged on the side wall of the liquid injection slide; the liquid injection slide rail is arranged on the side wall of the liquid injection support along the vertical direction; the liquid injection extension block is arranged on the upper side wall of the liquid injection support and extends horizontally outward.

[0008] The liquid injection assembly also includes a liquid injection guide sleeve, a liquid injection spring, a liquid injection seat and a liquid injection head, wherein the liquid injection guide sleeve is arranged at the bottom of the liquid injection extension block and extends vertically downward; the liquid injection seat is slidably connected to the liquid injection slide rail, and the liquid injection seat is guided and limited by a guide rod that is inserted into the column liquid guide sleeve and slides freely in the liquid injection guide sleeve.

[0009] The outer sleeve of the guide rod is provided with an injection spring, and the two ends of the injection spring are respectively connected to the injection guide sleeve and the injection seat, which are used to provide elastic buffering during the injection process; a liquid path is arranged inside the injection seat, and an access port is opened on the side wall of the injection seat to connect to an external liquid supply device; the injection head is connected to the bottom of the injection seat and is connected to the liquid path of the injection seat, which is used to inject liquid into the injection port of the battery.

[0010] The utility model relates to a battery filling machine of an automatic battery filling device.

[0011] The beneficial effects of the present invention are: In response to the defects and shortcomings of the existing technology, the present invention independently developed and designed a battery automatic filling device and battery filling machine that can achieve synchronous filling of multiple batteries, improve filling efficiency, have a flexible buffer contact battery filling port to reduce the extrusion deformation of the battery, and continuously press down the battery filling port through reverse elastic force to ensure contact tightness and position stability.

[0012] The present invention aims to provide a battery filling process section applied to the field of new energy batteries, which belongs to a battery automatic filling device, and its function is to realize automatic and synchronous filling of multiple batteries. The present invention is arranged as a whole on the side of the battery platform. When the battery platform moves to the position of the present invention after fixing multiple battery clamps, the liquid injection action is completed by the present invention. The present invention realizes the automatic liquid injection of multiple batteries at the same time by synchronously driving the lifting movement of multiple groups of liquid injection components, thereby improving the liquid injection efficiency. Specifically, the present invention uses a liquid injection bracket with a U-shaped opening facing upward as a bearing structure, and a lifting slide is slidably connected to the liquid injection bracket in a vertical direction. The lifting slide is driven by the power output by the lifting motor below through the lifting shaft threadedly connected thereto to move up and down, so as to drive the liquid injection support and the liquid injection support plate arranged thereon to move up and down; the liquid injection support plate is arranged vertically, and a liquid injection slide is slidably connected to the side wall thereof in a vertical direction. Multiple groups of liquid injection components are arranged at intervals on the side wall of the liquid injection slide. The liquid injection slide drives the multiple groups of liquid injection components to move up and down synchronously under the drive of the liquid injection cylinder above, so as to synchronously approach multiple batteries on the battery platform and complete the liquid injection of multiple batteries at the same time. The special feature of the present invention is that the liquid injection component has a self-adaptive flexible adjustment function, that is, the liquid injection component flexibly contacts the battery when it approaches the battery downward before liquid injection, and maintains the state of pressing the liquid injection port downward by elastic force, so as to ensure the airtight connection between the liquid injection port and the battery during the liquid injection process; specifically, the liquid injection component is supported by a liquid injection support vertically arranged on the side wall of the liquid injection slide, and a liquid injection extension block extending horizontally outward is provided on the top outer wall of the liquid injection support. The liquid injection seat below the liquid injection extension block is slidably connected to the liquid injection slide rail on the side wall of the liquid injection support in the vertical direction, and the liquid injection seat drives the liquid injection head arranged at the bottom thereof to have a movable function in the vertical direction, so that the column liquid head has a movable function when it approaches the liquid injection port of the battery below during the liquid injection process. At the same time, the column liquid seat is connected to the liquid injection guide sleeve arranged at the lower part of the liquid injection extension block through a guide rod vertically inserted therein. When the liquid filling slide moves in the vertical direction, the cylinder is guided and limited by the guide rod; at the same time, a liquid filling spring is provided on the guide rod, and the two ends of the liquid filling spring push against the guide sleeve and the liquid filling seat respectively. In the natural state, the elastic force of the liquid filling spring provides a thrust to push the liquid filling seat downward to maintain the downward pressure of the liquid filling seat and the liquid filling head; when the liquid filling support as a whole descends and approaches the battery, when the liquid filling head is attached to the liquid filling port of the battery, the upward reaction force of the battery acts upward on the liquid filling port, and as the liquid filling support continues to descend, the liquid filling spring is compressed, and the compressed liquid filling spring provides downward elastic pressure to the liquid filling head. This continuous pressure can not only ensure the elastic buffering when the liquid filling head contacts the battery liquid filling port, but also maintain the contact and closure of the liquid filling head and the battery liquid filling port during the liquid filling process, thereby ensuring the stability of the connection with the battery liquid filling port during the liquid filling process and reducing the leakage of electrolyte during the liquid filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the three-dimensional structural diagrams of the present invention.

[0014] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 3 This is one of the three-dimensional structural schematic diagrams of the liquid injection component of the present invention.

[0016] Figure 4 This is the second schematic diagram of the three-dimensional structure of the liquid injection component of the present invention.

[0017] In the picture: 51. Liquid injection bracket; 52. Lifting motor; 53. Lifting shaft; 54. Lifting slide; 55. Liquid injection support; 56. Liquid injection support plate; 57. Liquid injection cylinder; 58. Liquid injection slide; 59. Liquid injection assembly; 591. Liquid injection support; 592. Liquid injection slide rail; 593. Liquid injection extension block; 594. Liquid injection guide sleeve; 595. Liquid injection spring; 596. Liquid injection seat; 597. Liquid injection head. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0021] like Figures 1 to 2As shown, the present invention proposes an automatic battery filling device for automatic battery filling, comprising a filling bracket 51, a lifting motor 52, a lifting shaft 53, a lifting slide 54, a filling support platform 55, a filling support plate 56, a filling lifting assembly and a filling assembly 59, wherein the filling bracket 51 is arranged on the machine platform and is located on the side of the battery platform, and the filling bracket 51 is a box-shaped frame with an opening facing upward; the lifting slide 54 is a U-shaped seat structure with an opening facing upward, and the lifting slide 54 is slidably connected to the side wall of the filling bracket 51 in the vertical direction; the lifting motor 52 is arranged at the lower part of the filling bracket 51, and the output end extends upward through the filling bracket 51; the lifting shaft 53 is connected to the top The output end of the lifting motor 52 is driven by the lifting motor 52 to rotate; the lifting shaft 53 is threadedly connected to the lifting slide 54, and the lifting shaft 53 drives the lifting slide 54 to move up and down when it rotates; the injection support 55 is horizontally arranged on the upper part of the lifting slide 54; the injection support plate 56 is vertically arranged on the side of the injection support 55 close to the battery platform; the injection lifting assembly is arranged on the side wall of the injection support plate 56 and outputs power in the vertical direction; the injection assembly 59 includes at least two groups, and at least two groups of injection assemblies 59 are arranged at intervals on the injection lifting assembly, and are driven by the injection lifting assembly to move up and down synchronously, so as to inject liquid close to the injection port of the battery on the battery platform 0.

[0022] The liquid injection lifting assembly includes a liquid injection cylinder 57 and a liquid injection slide 58, wherein the liquid injection cylinder 57 is arranged on the upper part of the liquid injection support plate 56, and the output end is arranged downward; the liquid injection slide 58 is slidably connected to the side wall of the liquid injection support plate 56 in the vertical direction, and is connected to the output end of the liquid injection cylinder 57, and is driven by the liquid injection cylinder 57 to move up and down. Example 2

[0023] like Figures 3 and 4 As shown, as an embodiment of the present invention, the liquid injection component 59 of the present invention is arranged on the side wall of the liquid injection slide 58, and the liquid injection component 59 includes a liquid injection support 591, a liquid injection slide 592 and a liquid injection extension block 593, wherein the liquid injection support 591 is vertically arranged on the side wall of the liquid injection slide 58; the liquid injection slide 592 is arranged on the side wall of the liquid injection support 591 along the vertical direction; the liquid injection extension block 593 is arranged on the upper side wall of the liquid injection support 591 and extends horizontally outward.

[0024] The liquid injection assembly 59 also includes a liquid injection guide sleeve 594, a liquid injection spring 595, a liquid injection seat 596 and a liquid injection head 597, wherein the liquid injection guide sleeve 594 is arranged at the bottom of the liquid injection extension block 593 and extends vertically downward; the liquid injection seat 596 is slidably connected to the liquid injection slide rail 592, and the liquid injection seat 596 is guided and limited by a guide rod that is inserted into the column liquid guide sleeve 594 and slides freely in the liquid injection guide sleeve 594.

[0025] The outer sleeve of the guide rod is provided with an injection spring 595, and the two ends of the injection spring 595 are respectively connected to the injection guide sleeve 594 and the injection seat 596, which are used to provide elastic buffering during the injection process; the liquid path is arranged inside the injection seat 596, and an access port is opened on the side wall of the injection seat 596 to connect to an external liquid supply device; the injection head 597 is connected to the bottom of the injection seat 596 and is connected to the liquid path of the injection seat 596, and is used to inject liquid into the injection port of the battery. Example 3

[0026] As one embodiment of the present invention, the present invention discloses a battery filling machine including an automatic battery filling device.

[0027] Furthermore, the present invention designs an automatic battery filling device and a battery filling machine that achieves simultaneous filling of multiple batteries, improving filling efficiency. The device features a flexible, buffered contact with the battery filling port to reduce squeeze deformation on the battery, while continuously pressing down the battery filling port through a reverse elastic force to ensure contact tightness and positional stability. The present invention aims to provide a battery filling process section for use in the field of new energy batteries, belonging to an automated battery filling device, which functions to achieve automatic, simultaneous filling of multiple batteries. The present invention is arranged as a whole on the side of the battery platform. When the battery platform moves to the position of the present invention after fixing multiple battery clamps, the liquid injection action is completed by the present invention. The present invention realizes the automatic liquid injection of multiple batteries at the same time by synchronously driving the lifting movement of multiple groups of liquid injection components, thereby improving the liquid injection efficiency. Specifically, the present invention uses a liquid injection bracket with a U-shaped opening facing upward as a bearing structure, and a lifting slide is slidably connected to the liquid injection bracket in a vertical direction. The lifting slide is driven by the power output by the lifting motor below through the lifting shaft threadedly connected thereto to move up and down, so as to drive the liquid injection support and the liquid injection support plate arranged thereon to move up and down; the liquid injection support plate is arranged vertically, and a liquid injection slide is slidably connected to the side wall thereof in a vertical direction. Multiple groups of liquid injection components are arranged at intervals on the side wall of the liquid injection slide. The liquid injection slide drives the multiple groups of liquid injection components to move up and down synchronously under the drive of the liquid injection cylinder above, so as to synchronously approach multiple batteries on the battery platform and complete the liquid injection of multiple batteries at the same time.The special feature of the present invention is that the liquid injection component has a self-adaptive flexible adjustment function, that is, the liquid injection component flexibly contacts the battery when it approaches the battery downward before liquid injection, and maintains the state of pressing the liquid injection port downward by elastic force, so as to ensure the airtight connection between the liquid injection port and the battery during the liquid injection process; specifically, the liquid injection component is supported by a liquid injection support vertically arranged on the side wall of the liquid injection slide, and a liquid injection extension block extending horizontally outward is provided on the top outer wall of the liquid injection support. The liquid injection seat below the liquid injection extension block is slidably connected to the liquid injection slide rail on the side wall of the liquid injection support in the vertical direction, and the liquid injection seat drives the liquid injection head arranged at the bottom thereof to have a movable function in the vertical direction, so that the column liquid head has a movable function when it approaches the liquid injection port of the battery below during the liquid injection process. At the same time, the column liquid seat is connected to the liquid injection guide sleeve arranged at the lower part of the liquid injection extension block through a guide rod vertically inserted therein. When the liquid filling slide moves in the vertical direction, the cylinder is guided and limited by the guide rod; at the same time, a liquid filling spring is provided on the guide rod, and the two ends of the liquid filling spring push against the guide sleeve and the liquid filling seat respectively. In the natural state, the elastic force of the liquid filling spring provides a thrust to push the liquid filling seat downward to maintain the downward pressure of the liquid filling seat and the liquid filling head; when the liquid filling support as a whole descends and approaches the battery, when the liquid filling head is attached to the liquid filling port of the battery, the upward reaction force of the battery acts upward on the liquid filling port, and as the liquid filling support continues to descend, the liquid filling spring is compressed, and the compressed liquid filling spring provides downward elastic pressure to the liquid filling head. This continuous pressure can not only ensure the elastic buffering when the liquid filling head contacts the battery liquid filling port, but also maintain the contact and closure of the liquid filling head and the battery liquid filling port during the liquid filling process, thereby ensuring the stability of the connection with the battery liquid filling port during the liquid filling process and reducing the leakage of electrolyte during the liquid filling process.

[0028] The embodiments of the present invention are merely to introduce specific implementation methods and are not intended to limit the scope of protection. Persons skilled in the art may make certain modifications inspired by these embodiments. Therefore, any equivalent changes or modifications made in accordance with the scope of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A battery automatic liquid filling device for automatic battery filling, characterized by: It includes a liquid injection bracket (51), a lifting motor (52), a lifting shaft (53), a lifting slide (54), a liquid injection support platform (55), a liquid injection support plate (56), a liquid injection lifting component and a liquid injection component (59), wherein: The liquid injection bracket (51) is arranged on the machine platform and is located on the side of the battery platform. The liquid injection bracket (51) is a box-shaped frame with an opening facing upwards. The lifting slide (54) is a U-shaped seat structure with an opening facing upward, and the lifting slide (54) is slidably connected to the side wall of the liquid injection bracket (51) in a vertical direction; The lifting motor (52) is arranged at the lower part of the liquid injection bracket (51), and the output end passes through the liquid injection bracket (51) and extends upward; The lifting shaft (53) is connected to the output end of the lifting motor (52) and is driven by the lifting motor (52) to rotate. The lifting shaft (53) is threadedly connected to the lifting slide (54). When the lifting shaft (53) rotates, it drives the lifting slide (54) to move up and down. The liquid injection support (55) is horizontally arranged on the upper part of the lifting slide (54); The liquid injection support plate (56) is vertically arranged on a side of the liquid injection support platform (55) close to the battery platform; The liquid injection lifting assembly is arranged on the side wall of the liquid injection support plate (56) and outputs power in the vertical direction; The liquid injection assembly (59) comprises at least two groups, and the at least two groups of liquid injection assemblies (59) are spaced apart and arranged on the liquid injection lifting assembly, and are driven by the liquid injection lifting assembly to move synchronously up and down so as to be close to the liquid injection port of the battery on the battery platform (0) for liquid injection.

2. The automatic battery filling device according to claim 1, characterized in that: The liquid injection lifting assembly includes a liquid injection cylinder (57) and a liquid injection slide (58), wherein the liquid injection cylinder (57) is arranged on the upper part of the liquid injection support plate (56), and the output end is arranged downward; the liquid injection slide (58) is slidably connected to the side wall of the liquid injection support plate (56) in the vertical direction, and is connected to the output end of the liquid injection cylinder (57), and is driven by the liquid injection cylinder (57) to move up and down.

3. The automatic battery filling device according to claim 2, characterized in that: The liquid injection assembly (59) is arranged on the side wall of the liquid injection slide (58), and the liquid injection assembly (59) includes a liquid injection support (591), a liquid injection slide rail (592) and a liquid injection extension block (593), wherein the liquid injection support (591) is vertically arranged on the side wall of the liquid injection slide (58); the liquid injection slide rail (592) is arranged on the side wall of the liquid injection support (591) in a vertical direction; and the liquid injection extension block (593) is arranged on the upper side wall of the liquid injection support (591) and extends horizontally outward.

4. The automatic battery filling device according to claim 3, characterized in that: The injection assembly (59) further includes an injection guide sleeve (594), an injection spring (595), an injection seat (596) and an injection head (597), wherein the injection guide sleeve (594) is arranged at the bottom of the injection extension block (593) and extends vertically downward; the injection seat (596) is slidably connected to the injection slide rail (592), and the injection seat (596) is guided and limited by a guide rod that is inserted into the column liquid guide sleeve (594) and freely slides in the injection guide sleeve (594).

5. The automatic battery filling device according to claim 4, characterized in that: The guide rod is provided with an injection spring (595) on the outside, and the two ends of the injection spring (595) are respectively connected to the injection guide sleeve (594) and the injection seat (596), and are used to provide elastic buffering during the injection process; a liquid path is arranged inside the injection seat (596), and an access port is opened on the side wall of the injection seat (596) to connect to an external liquid supply device; the injection head (597) is connected to the bottom of the injection seat (596) and is communicated with the liquid path of the injection seat (596), and is used to inject liquid into the injection port of the battery.

6. A battery filling machine comprising the automatic battery filling device according to claim 1.

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