Production equipment integrating battery charging and liquid injection

Abstract

The utility model relates to production equipment integrating battery charging and liquid injection, and the production equipment comprises a liquid injection mechanism which comprises a lifting frame, the lifting frame is connected with a liquid injection head for injecting liquid into a battery, the liquid injection head is connected with a liquid injection pump through a pipeline, and the inlet end of the liquid injection pump is connected with an electrolyte box; the charging mechanism comprises a positive pole charging column and a negative pole charging column which are connected to the lifting frame, and the positive pole charging column and the negative pole charging column are connected with a charger for charging the battery through wire harnesses; and the shaping mechanism comprises a clamping plate for clamping the battery, and the clamping plate is connected with a clamping and pushing mechanism for positioning the battery right below the liquid injection head, the positive charging column and the negative charging column. According to the production equipment disclosed by the invention, the battery is charged during liquid injection, so that the absorption of the electrolyte by the pole piece can be promoted, the free electrolyte is reduced, the liquid injection difficulty is reduced, and the production capacity is improved.

Description

Technical Field

[0001] This application relates to the technical field of secondary battery production equipment, and particularly relates to a production equipment integrating battery charging and liquid injection. Background Art

[0002] In recent years, with the rapid development of the new energy industry, people have higher and higher requirements for battery performance, including but not limited to higher energy density, longer cycle life, higher energy efficiency, and better safety performance, etc. These requirements make the battery design more and more tend to the limit, such as higher compaction density, higher group margin, and higher liquid injection coefficient.

[0003] Due to the demand for high energy density and high capacity of the battery, the winding (or stacking) of the battery core is getting tighter and tighter, the chemical substances in the battery core increase, and the space shrinks. Using ordinary liquid injection processes such as: liquid injection - vacuum pumping - pressurization - stillness; vacuum pumping - liquid injection - pressurization - stillness, the electrolyte cannot penetrate smoothly, and liquid injection becomes very difficult and time-consuming. Now the liquid injection process has become the bottleneck of the whole production line. In order to break through the bottleneck, various research institutions and battery manufacturers are actively exploring and researching battery liquid injection processes and liquid injection equipment.

[0004] The currently commonly used liquid injection methods are equal-pressure liquid injection and differential-pressure liquid injection. It mainly promotes the absorption of electrolyte by the electrode plate through high and low pressure cycles. However, the liquid absorption capacity of the battery core has an upper limit in this state. Only increasing the number of cycles to improve the liquid absorption amount of the battery core has an insignificant effect, and it increases the liquid injection time, affecting the production capacity. But currently, it is still unable to solve the problems of difficult liquid injection and long time consumption of high specific energy batteries well. Summary of the Invention

[0005] The embodiments of this application provide a production equipment integrating battery charging and liquid injection to solve the problems of difficult battery liquid injection and long time consumption in the related art.

[0006] The embodiments of this application provide a production equipment integrating battery charging and liquid injection, including:

[0007] A liquid injection mechanism, the liquid injection mechanism includes a lifting frame, the lifting frame is connected with a liquid injection head for injecting liquid into the battery, the liquid injection head is connected with a liquid injection pump through a pipeline, and the inlet end of the liquid injection pump is connected with an electrolyte tank;

[0008] A charging mechanism, the charging mechanism includes a positive charging column and a negative charging column connected to the lifting frame, and the positive charging column and the negative charging column are connected with a charger for charging the battery through a wire harness;

[0009] A shaping mechanism, the shaping mechanism includes a clamping plate for clamping the battery, and the clamping plate is connected with a clamping and pushing mechanism for positioning the battery directly below the liquid injection head, the positive charging column and the negative charging column.

[0010] In some embodiments: a translation mechanism for driving the liquid injection head, the positive charging column and the negative charging column to move synchronously in the horizontal plane is provided on the lifting frame, the liquid injection head is located between the positive charging column and the negative charging column on the translation mechanism, and positioning sliders for respectively adjusting the distance between the positive charging column and the negative charging column are provided on the translation mechanism.

[0011] In some embodiments: the translation mechanism includes a first linear module and a second linear module connected to each other, and the moving directions of the first linear module and the second linear module are perpendicular to each other;

[0012] The first linear module is fixed on the lifting frame, an installation plate is connected to the second linear module, and the liquid injection head is fixed on the installation plate;

[0013] The positive charging column and the negative charging column are slidably connected to the installation plate through the positioning sliders.

[0014] In some embodiments: both the positive charging column and the negative charging column include insulating mounting rods, a conductive body is provided at one end of the insulating mounting rod, and the conductive body is connected to the insulating mounting rod through a ball joint.

[0015] In some embodiments: the ball joint includes a ball joint head and a ball joint seat that are rotatably connected to each other, the ball joint seat is vertically and floatingly connected to the insulating mounting rod, and a compression spring for elastically supporting the ball joint seat is provided in the insulating mounting rod.

[0016] In some embodiments: the battery is a square battery, there are two clamping plates, the two clamping plates are parallel to each other and arranged at intervals, the two clamping plates are used for clamping the large surfaces on the side walls of the square battery, and there are two groups of the clamping and pushing mechanisms which are respectively connected to the clamping plates, and the two groups of the clamping and pushing mechanisms drive the clamping plates to move in directions approaching or separating from each other.

[0017] In some embodiments: the battery is a square battery, there are two clamping plates, both of the two clamping plates include a short clamping plate and a long clamping plate that are perpendicularly connected to each other, the short clamping plate and the long clamping plate form an "L" - shaped structure, and the two clamping plates are opposed to each other to form a rectangular frame surrounding the square battery.

[0018] In some embodiments: a guiding slope is provided at one end of the short clamping plate away from the long clamping plate, the guiding slope makes the thickness of the short clamping plate gradually decrease in the direction away from the long clamping plate, and the guiding slope is the side facing the square battery.

[0019] In some embodiments, it further includes a frame, on which there are multiple vertical slide rails slidably connecting the lifting frame, and a driving cylinder for driving the lifting frame to move up and down along the vertical slide rails is provided at the top of the frame.

[0020] In some embodiments, a liquid injection platform for placing the battery is provided on the frame, and the clamping and pushing mechanism of the shaping mechanism is fixed on the liquid injection platform.

[0021] The beneficial effects brought by the technical solution provided by this application include:

[0022] The embodiment of this application provides a production device integrating battery charging and liquid injection. Since the production device of this application is provided with a liquid injection mechanism, the liquid injection mechanism includes a lifting frame, a liquid injection head for injecting liquid into the battery is connected to the lifting frame, the liquid injection head is connected to a liquid injection pump through a pipeline, and the inlet end of the liquid injection pump is connected to an electrolyte tank; a charging mechanism, the charging mechanism includes a positive charging column and a negative charging column connected to the lifting frame, and the positive charging column and the negative charging column are connected to a charger for charging the battery through a wire harness; a shaping mechanism, the shaping mechanism includes a clamping plate for clamping the battery, and the clamping plate is connected with a clamping and pushing mechanism for positioning the battery directly below the liquid injection head, the positive charging column and the negative charging column.

[0023] Therefore, while the production device of this application uses the liquid injection mechanism to inject liquid into the battery, it also synchronously uses the charging mechanism to charge the battery. During the charging process of the battery by the charging mechanism, charging can promote the absorption of the electrolyte by the electrode plates of the battery. By charging the battery while injecting liquid, this application can promote the absorption of the electrolyte by the electrode plates, reduce the free electrolyte, lower the liquid injection difficulty, and improve the production capacity. It shortens the liquid injection time under the same liquid injection volume, or increases the liquid injection volume under the same liquid injection time and the high and low voltage parameters of the equipment.

[0024] In addition, in order to improve the alignment accuracy between the liquid injection head, the positive charging column and the negative charging column and the liquid injection holes and electrode posts of the battery, this application also provides a shaping mechanism. The shaping mechanism clamps the battery through a clamping plate, and the clamping plate is connected with a clamping and pushing mechanism for positioning the battery directly below the liquid injection head, the positive charging column and the negative charging column. The shaping mechanism calibrates the corresponding positions of the liquid injection holes and electrode posts of the battery and the liquid injection head, the positive charging column and the negative charging column, so that the battery can be quickly docked with the production device. In order to prevent the risk of battery bulging and over-thickness caused by battery charging, the shaping mechanism also plays a role in restraining and pressing the battery for shaping. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional structure diagram of an embodiment of the present application;

[0027] Figure 2 It is a front view of the structure of an embodiment of the present application;

[0028] Figure 3 It is a side view of the structure of an embodiment of the present application.

[0029] Reference numerals:

[0030] 1. Battery; 11. Lifting frame; 12. Liquid injection head; 13. Liquid injection pump; 14. Electrolyte tank; 15. First linear module; 16. Second linear module; 17. Mounting plate; 18. Driving cylinder;

[0031] 21. Positive charging column; 22. Negative charging column; 23. Charger; 24. Positioning slider; 25. Insulating mounting rod; 26. Ball hinge; 27. Conductor;

[0032] 31. Clamping plate; 32. Clamping and pushing mechanism; 41. Frame; 42. Vertical slide rail; 43. Liquid injection platform. Detailed implementation manners

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0034] The embodiments of the present application provide a production device integrating battery charging and liquid injection, which can solve the problems of difficult battery liquid injection and long time consumption in the related art.

[0035] See Figures 1 to 3 As shown, the embodiments of the present application provide a production device integrating battery charging and liquid injection, including:

[0036] Liquid injection mechanism. The liquid injection mechanism includes a lifting frame 11, and a liquid injection head 12 for injecting liquid into the battery 1 is connected to the lifting frame 11. The liquid injection head 12 is connected to a liquid injection pump 13 through a pipeline, and the inlet end of the liquid injection pump 13 is connected to an electrolyte tank 14. The electrolyte in the electrolyte tank 14 enters the liquid injection pump 13 through a pipeline, and the liquid injection pump 13 pumps the electrolyte into the battery 1 through the liquid injection head 12.

[0037] Charging mechanism. The charging mechanism includes a positive charging column 21 and a negative charging column 22 connected to the lifting frame 11. The positive charging column 21 and the negative charging column 22 are connected to a charger 23 for charging the battery through a wire harness. After adjusting the charging current and voltage, the charger 23 charges the battery 1 after being connected and conducting with the positive electrode post and the negative electrode post of the battery 1 through the positive charging column 21 and the negative charging column 22.

[0038] Shaping mechanism. The shaping mechanism includes a clamping plate 31 for clamping the battery 1, and the clamping plate 31 is connected to a clamping and pushing mechanism 32 for positioning the battery 1 directly below the liquid injection head 12, the positive charging column 21 and the negative charging column 22. The clamping and pushing mechanism 32 positions the battery 1 directly below the liquid injection head 12, the positive charging column 21 and the negative charging column 22 by pushing the clamping plate 31, facilitating the docking of the liquid injection head 12 with the liquid injection port of the battery 1 and the docking of the positive charging column 21 and the negative charging column 22 with the positive electrode post and the negative electrode post of the battery.

[0039] While the production equipment of the present application uses the liquid injection mechanism to inject liquid into the battery 1, it also simultaneously uses the charging mechanism to charge the battery 1. During the charging process of the battery 1 by the charging mechanism, the charging can promote the absorption of the electrolyte by the electrode plates of the battery 1. By charging the battery 1 while injecting liquid, the present application can promote the absorption of the electrolyte by the electrode plates, reduce the free electrolyte, lower the liquid injection difficulty, and improve the production capacity. It can shorten the liquid injection time under the same liquid injection volume, or increase the liquid injection volume under the same liquid injection time and the high and low voltage parameters of the equipment.

[0040] In addition, in order to improve the alignment accuracy of the liquid injection head 12, the positive charging column 21 and the negative charging column 22 with the liquid injection hole and the electrode post of the battery 1, the present application also provides a shaping mechanism. The shaping mechanism clamps the battery 1 through the clamping plate 31, and the clamping plate 31 is connected to a clamping and pushing mechanism 32 for positioning the battery 1 directly below the liquid injection head 12, the positive charging column 21 and the negative charging column 22. The shaping mechanism calibrates the corresponding positions of the liquid injection hole and the electrode post of the battery 1 with the liquid injection head 12, the positive charging column 21 and the negative charging column 22, enabling the battery 1 to be quickly docked with the production equipment. In order to prevent the risk of the battery 1 bulging and becoming too thick caused by charging the battery 1, the shaping mechanism also plays a role in restraining and pressing the battery 1 for shaping.

[0041] In some alternative embodiments: Refer to Figures 1 to 3As shown in the figure, an embodiment of the present application provides a production device integrating battery charging and liquid injection. A translation mechanism for driving a liquid injection head 12, a positive charging column 21, and a negative charging column 22 to move synchronously in a horizontal plane ( Figure 1 in the XY plane in the figure)) is provided on a lifting frame 11 of the production device. The liquid injection head 12 is located between the positive charging column 21 and the negative charging column 22 on the translation mechanism. A positioning slider 24 for respectively adjusting the distance between the positive charging column 21 and the negative charging column 22 is provided on the translation mechanism. The positioning slider 24 can adjust the distance between the positive charging column 21 and the negative charging column 22 so that the distance between the positive charging column 21 and the negative charging column 22 is adapted to different models of batteries 1.

[0042] Specifically, the translation mechanism includes a first linear module 15 and a second linear module 16 connected to each other. The moving directions of the first linear module 15 and the second linear module 16 are perpendicular to each other. For example, the first linear module 15 moves linearly along the X-axis direction, and the second linear module 16 moves linearly along the Y-axis direction. The first linear module 15 is fixed on the lifting frame 11, and a mounting plate 17 is connected to the second linear module 16. The liquid injection head 12 is fixed on the mounting plate 17. The positive charging column 21 and the negative charging column 22 are slidably connected to the mounting plate 17 through the positioning slider 24. After the positioning slider 24 adjusts the positive charging column 21 and the negative charging column 22 to a set distance, the positive charging column 21 and the negative charging column 22 are positioned on the mounting plate 17 by screwing a set screw into the positioning slider 24.

[0043] In some alternative embodiments: Refer to Figures 1 to 3 As shown in the figure, an embodiment of the present application provides a production device integrating battery charging and liquid injection. Both the positive charging column 21 and the negative charging column 22 of the production device include an insulating mounting rod 25. A conductor 27 is provided at one end of the insulating mounting rod 25. The conductor 27 is connected to the insulating mounting rod 25 through a ball joint 26. The ball joint 26 includes a ball joint head and a ball joint seat that are rotatably connected to each other. The ball joint seat is vertically floatingly connected to the insulating mounting rod 25. A compression spring (not shown in the figure) for elastically supporting the ball joint seat is provided in the insulating mounting rod 25.

[0044] The insulating mounting rod 25 is used to connect the conductor 27 and keep the conductor 27 in an insulating state from the positioning slider 24. The insulating mounting rod 25 is connected to the conductor 27 through the ball joint 26. When the positive charging column 21 and the negative charging column 22 move downward and dock with the positive electrode post and the negative electrode post, the positive charging column 21 and the negative charging column 22 can adaptively adjust their own angles by using the ball joint 26, so that the positive charging column 21 and the negative charging column 22 are respectively reliably docked with the positive electrode post and the negative electrode post, preventing poor contact caused by processing and assembly errors. The compression spring has the function of elastically supporting the conductor 27, so that the conductor 27 can still be reliably connected to the positive electrode post and the negative electrode post when it is worn.

[0045] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a production device integrating battery charging and liquid injection, wherein the battery 1 of the production device is a square battery, and two clamping plates 31 are provided, and the two clamping plates 31 are parallel to each other and spaced apart. The two clamping plates 31 are used to clamp on the large surface of the side wall of the square battery, and the clamping and pushing mechanisms 32 are provided in two groups and are respectively connected to the clamping plates 31, and the two groups of clamping and pushing mechanisms 32 respectively drive the clamping plates 31 to move in the direction of approaching or moving away from each other.

[0046] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a production device for integrated battery charging and liquid injection, wherein the battery 1 of the production device is a square battery, and two clamping plates 31 are provided, and the two clamping plates 31 each include a short clamping plate and a long clamping plate connected vertically to each other, and the short clamping plate and the long clamping plate form an "L"-shaped structure. The two clamping plates 31 are mutually matched to form a rectangular frame surrounding the square battery.

[0047] A guide slope is provided at one end of the short clamping plate away from the long clamping plate, and the guide slope gradually reduces the thickness of the short clamping plate in the direction away from the long clamping plate, and the guide slope is the side close to the square battery. When the clamping and pushing mechanism 32 drives the clamping plates 31 to clamp the square battery in a direction close to each other, the guide slope on the short clamping plate has an automatic guiding and centering positioning function for the square battery, preventing the problem of clamping damage when the square battery is not placed in place.

[0048] The two clamping plates 31 are both connected with a clamping and pushing mechanism 32. The clamping and pushing mechanism 32 is provided with two groups and connected to the clamping plates 31 respectively. The two groups of clamping and pushing mechanisms 32 respectively drive the clamping plates 31 to move in the direction of approaching or moving away from each other to clamp and position the square battery. In the process of clamping and positioning, the square battery is prevented from bulging during charging, and the shape of the square battery is kept stable.

[0049] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a production device that integrates battery charging and liquid injection, and the production device also includes a frame 41, on which a plurality of vertical slide rails 42 that are slidably connected to the lifting frame 11 are provided. A driving cylinder 18 that drives the lifting frame 11 to move up and down along the vertical slide rails 42 is provided on the top of the frame 41. A liquid injection platform 43 for placing the battery 1 is provided on the frame 41, and the clamping and pushing mechanism 32 of the shaping mechanism is fixed on the liquid injection platform 43.

[0050] How it works

[0051] The embodiment of the present application provides a production device integrating battery charging and liquid injection. Since the production device of the present application is provided with a liquid injection mechanism, the liquid injection mechanism includes a lifting frame 11, the lifting frame 11 is connected with a liquid injection head 12 for injecting liquid into the battery, the liquid injection head 12 is connected with a liquid injection pump 13 through a pipeline, and the inlet end of the liquid injection pump 13 is connected with an electrolyte tank 14; a charging mechanism, the charging mechanism includes a positive charging column 21 and a negative charging column 22 connected to the lifting frame 11, and the positive charging column 21 and the negative charging column 22 are connected with a charger 23 for charging the battery through a wire harness; a shaping mechanism, the shaping mechanism includes a clamping plate 31 for clamping the battery 1, and the clamping plate 31 is connected with a clamping and pushing mechanism 32 for positioning the battery 1 directly below the liquid injection head 12, the positive charging column 21 and the negative charging column 22.

[0052] Therefore, while the production device of the present application injects liquid into the battery 1 by using the liquid injection mechanism, it also synchronously charges the battery 1 by using the charging mechanism. During the charging process of the battery 1 by the charging mechanism, it can promote the liquid absorption capacity of the electrode plates of the battery 1. By charging the battery 1 while injecting liquid, the present application can promote the absorption of the electrolyte by the electrode plates, reduce the free electrolyte, lower the liquid injection difficulty, and improve the production capacity. Shorten the liquid injection time under the same liquid injection volume, or increase the liquid injection volume under the same liquid injection time and the high and low voltage parameters of the equipment.

[0053] In addition, in order to improve the alignment accuracy between the liquid injection head 12, the positive charging column 21 and the negative charging column 22 and the liquid injection hole and the electrode post of the battery 1, the present application also provides a shaping mechanism. The shaping mechanism clamps the battery 1 through the clamping plate 31, and the clamping plate 31 is connected with a clamping and pushing mechanism 32 for positioning the battery 1 directly below the liquid injection head 12, the positive charging column 21 and the negative charging column 22. The shaping mechanism calibrates the corresponding positions of the liquid injection hole and the electrode post of the battery 1 and the liquid injection head 12, the positive charging column 21 and the negative charging column 22, so that the battery 1 can be quickly docked with the production device. In order to prevent the risk of the battery 1 bulging and becoming too thick caused by charging the battery 1, the shaping mechanism also plays a role in restraining and pressing the battery 1 for shaping.

[0054] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0055] It should be noted that in the present application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of another identical element in the process, method, article or device comprising the said element.

[0056] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A production device integrating battery charging and liquid injection, characterized in that: include: A liquid injection mechanism, the liquid injection mechanism comprising a lifting frame (11), the lifting frame (11) being connected to a liquid injection head (12) for injecting liquid into the battery (1), the liquid injection head (12) being connected to a liquid injection pump (13) via a pipeline, and the inlet end of the liquid injection pump (13) being connected to an electrolyte tank (14); A charging mechanism, the charging mechanism comprising a positive charging column (21) and a negative charging column (22) connected to the lifting frame (11), the positive charging column (21) and the negative charging column (22) being connected to a charger (23) for charging the battery (1) via a wiring harness; A shaping mechanism, the shaping mechanism comprising a clamping plate (31) for clamping a battery (1), the clamping plate (31) being connected to a clamping and pushing mechanism (32) for positioning the battery (1) directly below a liquid injection head (12), a positive charging column (21) and a negative charging column (22).

2. The integrated battery charging and liquid injection production equipment according to claim 1, characterized in that: The lifting frame (11) is provided with a translation mechanism for driving the injection head (12), the positive charging column (21) and the negative charging column (22) to move synchronously along a horizontal plane; the injection head (12) is located between the positive charging column (21) and the negative charging column (22) on the translation mechanism; and the translation mechanism is provided with a positioning slider (24) for adjusting the distance between the positive charging column (21) and the negative charging column (22).

3. The integrated battery charging and liquid injection production equipment according to claim 2, characterized in that: The translation mechanism comprises a first linear module (15) and a second linear module (16) which are connected to each other, and the movement directions of the first linear module (15) and the second linear module (16) are perpendicular to each other; The first linear module (15) is fixed on the lifting frame (11), the second linear module (16) is connected to a mounting plate (17), and the injection head (12) is fixed on the mounting plate (17); The positive charging column (21) and the negative charging column (22) are slidably connected to the mounting plate (17) via a positioning slider (24).

4. The integrated battery charging and liquid injection production equipment according to claim 1, characterized in that: The positive charging column (21) and the negative charging column (22) both include an insulating mounting rod (25), one end of the insulating mounting rod (25) is provided with a conductor (27), and the conductor (27) is connected to the insulating mounting rod (25) via a ball joint (26).

5. The integrated battery charging and liquid injection production equipment according to claim 4, characterized in that: The ball joint (26) comprises a ball joint head and a ball joint seat which are rotatably connected to each other. The ball joint seat is vertically floatingly connected to the insulating mounting rod (25). A compression spring which elastically supports the ball joint seat is arranged inside the insulating mounting rod (25).

6. The integrated battery charging and liquid injection production equipment according to claim 1, characterized in that: The battery (1) is a square battery, and two clamping plates (31) are provided. The two clamping plates (31) are parallel to each other and arranged at intervals, and the two clamping plates (31) are used to clamp on the large surface of the side wall of the square battery; The clamping and pushing mechanisms (32) are provided in two groups and are respectively connected to the clamping plates (31). The two groups of the clamping and pushing mechanisms (32) drive the clamping plates (31) to move in directions of approaching or moving away from each other.

7. The integrated battery charging and liquid injection production equipment according to claim 1, characterized in that: The battery (1) is a square battery, and two clamping plates (31) are provided. The two clamping plates (31) each include a short clamping plate and a long clamping plate that are vertically connected to each other, and the short clamping plate and the long clamping plate form an "L"-shaped structure. The two clamping plates (31) are mutually matched to form a rectangular frame surrounding the square battery.

8. The integrated battery charging and liquid injection production equipment according to claim 7, characterized in that: A guide slope is provided at one end of the short clamping plate away from the long clamping plate, and the guide slope gradually reduces the thickness of the short clamping plate in a direction away from the long clamping plate, and the guide slope is a side close to the square battery.

9. The integrated battery charging and liquid injection production equipment according to claim 1, characterized in that: It also comprises a frame (41), on which a plurality of vertical slide rails (42) slidably connected to the lifting frame (11) are provided, and a driving cylinder (18) is provided at the top of the frame (41) for driving the lifting frame (11) to move up and down along the vertical slide rails (42).

10. The integrated battery charging and liquid injection production equipment according to claim 9, characterized in that: The frame (41) is provided with a liquid injection platform (43) for placing the battery (1), and the clamping and pushing mechanism (32) of the shaping mechanism is fixed on the liquid injection platform (43).

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