Rotary liquid injection device for battery

Abstract

The utility model relates to a rotary liquid injection device for a battery, and belongs to the technical field of battery liquid injection, the rotary liquid injection device for the battery comprises a battery carrying table, and a clamping mechanism used for clamping the battery and a liquid injection mechanism used for being in butt joint with a liquid injection opening in the top of the battery are arranged on the battery carrying table; and the rotating mechanism is used for driving the battery carrying table to horizontally rotate so as to enable the battery and the liquid injection mechanism to synchronously rotate. According to the battery rotary liquid injection device, after the battery is fixed through the clamping mechanism on the battery carrying table and the liquid injection mechanism is in butt joint with the liquid injection opening in the top of the battery, the battery carrying table can be driven by the rotating mechanism to rotate, and then the battery and the liquid injection mechanism are driven to rotate synchronously, so that the battery rotates while being injected with electrolyte; according to the technical scheme, the electrolyte flows into the battery under the action of gravity and can be quickly dispersed to the inner peripheral side of the battery under the action of centrifugal force, so that the electrolyte injection speed is ensured, the electrolyte injection efficiency can be improved, and the production efficiency of the battery is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery liquid injection, and particularly relates to a battery rotary liquid injection device. Background Art

[0002] The liquid injection process of a battery is an important technical link in battery production, and the quality of liquid injection directly affects the yield of the battery. When injecting liquid, a battery liquid injection device is required to inject electrolyte into the battery cavity, so that a part of the electrolyte infiltrates into the inside of the battery cell (composed of positive and negative electrode plates and a separator), and the other part occupies the unfilled space.

[0003] The traditional liquid injection method generally makes the electrolyte flow into the battery by the action of gravity. However, in this liquid injection method, it is difficult for the battery to drain the liquid, and the infiltration time of the battery cell inside the battery is prolonged, which will result in too long production time. Therefore, it is necessary to provide a battery rotary liquid injection device that can improve the liquid injection efficiency to enhance the production efficiency of the battery. Summary of the Invention

[0004] In view of the above deficiencies or one of the deficiencies in the background art, an embodiment of the present application provides a battery rotary liquid injection device, which can improve the liquid injection efficiency of the electrolyte to enhance the production efficiency of the battery.

[0005] An embodiment of the present application provides a battery rotary liquid injection device, including:

[0006] A battery carrier platform, on which a clamping mechanism for clamping the battery and a liquid injection mechanism for docking the liquid injection port at the top of the battery are provided;

[0007] A rotating mechanism, which is used to drive the battery carrier platform to rotate horizontally so that the battery and the liquid injection mechanism rotate synchronously.

[0008] In some embodiments, the clamping mechanism includes a fixed plate and a movable plate provided on the battery carrier platform, and a first driving member for driving the movable plate to approach the fixed plate to clamp the battery.

[0009] In some embodiments, the clamping mechanism further includes a buffer pad provided between the fixed plate and the movable plate and used for separating the battery.

[0010] In some embodiments, an installation plate is provided on the battery carrier platform, and the first driving member is a screw rod threadedly connected to the installation plate and used for pressing against the movable plate.

[0011] In some embodiments, the liquid injection mechanism includes a liquid injection cup and a lifting structure provided on the battery carrier platform and used for driving the liquid injection cup to press against the liquid injection port at the top of the battery.

[0012] In some embodiments, the lifting structure includes a fixing frame for fixing the liquid injection cup, and a second driving member disposed on the battery carrier platform and configured to drive the fixing frame to lift and lower.

[0013] In some embodiments, it further includes an air extraction device and an air supply device for communicating with the liquid injection cup.

[0014] In some embodiments, the rotating mechanism includes a mounting platform for connecting the battery carrier platform, and a third driving member for driving the mounting platform to rotate horizontally.

[0015] In some embodiments, a clamping block is provided on the top surface of the mounting platform, and a clamping position matching the clamping block is provided on the bottom surface of the battery carrier platform.

[0016] In some embodiments, the battery includes a rectangular shell with an opening, an electric core located inside the rectangular shell, and a top cover for closing the rectangular shell, and a liquid injection port is provided on the top cover.

[0017] The beneficial effects brought by the technical solution provided in this application include:

[0018] The embodiments of this application provide a battery rotary liquid injection device, which includes a battery carrier platform, on which a clamping mechanism for clamping a battery and a liquid injection mechanism for docking with the liquid injection port at the top of the battery are provided; a rotating mechanism for driving the battery carrier platform to rotate horizontally so that the battery and the liquid injection mechanism rotate synchronously.

[0019] Therefore, after fixing the battery through the clamping mechanism on the battery carrier platform and docking the liquid injection mechanism with the liquid injection port at the top of the battery, the rotating mechanism can be used to drive the battery carrier platform to rotate, and then drive the battery and the liquid injection mechanism to rotate synchronously, realizing that the battery rotates while injecting electrolyte. While the electrolyte flows into the battery under the action of gravity, the electrolyte can be quickly dispersed to the peripheral side inside the battery under the action of centrifugal force, ensuring the injection speed, thereby improving the injection efficiency and enhancing the production efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the battery rotary liquid injection device provided by the embodiment of this application;

[0022] Figure 2 It is a schematic structural diagram of the liquid injection mechanism provided by the embodiment of this application;

[0023] Figure 3 It is the top view of the structure of the rotating mechanism provided by the embodiment of the present application;

[0024] Figure 4 It is the bottom view of the structure of the battery carrier provided by the embodiment of the present application;

[0025] Figure 5 It is the schematic diagram of the explosion structure of the battery provided by the embodiment of the present application.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Battery carrier; 11. Mounting plate; 12. Clamping position;

[0028] 2. Clamping mechanism; 21. Fixed plate; 22. Movable plate; 23. First driving member; 24. Buffer pad;

[0029] 3. Liquid injection mechanism; 31. Liquid injection cup; 32. Fixed frame; 33. Second driving member;

[0030] 4. Rotating mechanism; 41. Mounting table; 42. Third driving member; 43. Block;

[0031] 5. Battery; 51. Rectangular shell; 52. Battery cell; 53. Top cover; 54. Liquid injection port. Detailed implementation manners

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, rather than all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0033] In view of the deficiencies or one of the deficiencies in the above background technology, the embodiments of the present application provide a battery rotation liquid injection device, which can improve the liquid injection efficiency of the electrolyte to enhance the production efficiency of the battery.

[0034] See Figures 1 to 5 As shown, the embodiments of the present application provide a battery rotation liquid injection device, including:

[0035] A battery carrier 1, on which a clamping mechanism 2 for clamping a battery 5 and a liquid injection mechanism 3 for docking with the liquid injection port 54 at the top of the battery 5 are provided;

[0036] A rotating mechanism 4, which is used to drive the battery carrier 1 to rotate horizontally so that the battery 5 and the liquid injection mechanism 3 rotate synchronously.

[0037] On the battery stage 1 of the battery rotary filling device according to the embodiment of the present application, a clamping mechanism 2 and a filling mechanism 3 are provided. The clamping mechanism 2 can clamp and position the battery 5 placed on the battery stage 1, and the filling mechanism 3 can fill the battery 5. In addition, a rotating mechanism 4 that can drive the battery stage 1 to rotate horizontally is also provided.

[0038] Specifically, the battery 5 is fixed by the clamping mechanism 2 on the battery stage 1, and the filling mechanism 3 is docked with the filling port 54 at the top of the battery 5. The rotating mechanism 4 is used to drive the battery stage 1 to rotate. The battery stage 1 then drives the battery 5 and the filling mechanism 3 to rotate synchronously, so that the battery 5 rotates while being filled with electrolyte. When the electrolyte in the filling mechanism 3 flows into the battery 5 under the action of gravity, the electrolyte can be quickly dispersed to the inner circumference of the battery 5 under the action of centrifugal force, ensuring the filling speed, thereby improving the filling efficiency and enhancing the product production efficiency.

[0039] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary filling device. The clamping mechanism 2 of the battery rotary filling device includes a fixed plate 21 and a movable plate 22 provided on the battery stage 1, and a first driving member 23 for driving the movable plate 22 to approach the fixed plate 21 to clamp the battery 5.

[0040] The clamping mechanism 2 of the embodiment of the present application includes a fixed plate 21, a movable plate 22 and a first driving member 23. Specifically, the fixed plate 21 is fixedly connected to the top surface of the battery stage 1, the movable plate 22 is slidably connected to the top surface of the battery stage 1, and the first driving member 23 is installed on the battery stage 1 and can drive the movable plate 22 to approach or move away from the fixed plate 21.

[0041] Exemplarily, the first driving member 23 can be an electric cylinder. When it is necessary to fix the battery 5 to be filled, the battery 5 to be filled is placed on the battery stage 1, and the battery 5 to be filled is located between the fixed plate 21 and the movable plate 22. The first driving member 23 drives the movable plate 22 to approach the fixed plate 21, and then the battery 5 to be filled is clamped and positioned by the closed movable plate 22 and fixed plate 21.

[0042] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary filling device. The clamping mechanism 2 of the battery rotary filling device further includes a buffer pad 24 provided between the fixed plate 21 and the movable plate 22 and used for separating the battery 5.

[0043] The clamping mechanism 2 of the embodiment of the present application further includes a buffer pad 24. The buffer pad 24 can be placed between the fixed plate 21 and the movable plate 22 to separate the batteries 5, avoiding direct contact and extrusion between the batteries 5, thus playing a role in buffer protection. Exemplarily, the buffer pad 24 can be a soft pad such as a rubber pad or a foam pad.

[0044] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary filling device. An installation plate 11 is provided on the battery carrier 1 of the battery rotary filling device, and the first driving member 23 is a screw threadedly connected to the installation plate 11 and used to press against the movable plate 22.

[0045] The installation plate 11 is fixedly installed on the battery carrier 1 of the embodiment of the present application. The first driving member 23 is a screw, and the screw penetrates through the installation plate 11 and is threadedly connected to the installation plate 11. By rotating the screw, the movable plate 22 can be pressed against in the battery clamping direction, thereby realizing the clamping and positioning of the battery 5.

[0046] Exemplarily, the number of screws installed on the installation plate 11 in this embodiment is two, and the two screws are arranged at intervals along the length direction of the installation plate 11, which can form two pressing points on the movable plate 22, improving the pressing stability of the movable plate 22. In some other embodiments, the end of the screw can be rotatably connected to the movable plate 22. Threaded sleeves can be pre-opened and embedded on the installation plate 11 to facilitate the installation of the screw.

[0047] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary filling device. The filling mechanism 3 of the battery rotary filling device includes a filling cup 31 and a lifting structure provided on the battery carrier 1 and used to drive the filling cup 31 to press against the top filling port 54 of the battery 5.

[0048] The filling mechanism 3 of the embodiment of the present application includes a filling cup 31 and a lifting structure. The filling cup 31 is installed on the lifting structure, which is convenient for using the lifting structure to dock the filling cup 31 with the top filling port 54 of the battery 5. At the same time, it is convenient to realize the synchronous rotation of the rotating mechanism 4 driving the battery 5 and the filling cup 31.

[0049] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary filling device. The lifting structure of the battery rotary filling device includes a fixing frame 32 for fixing the filling cup 31, and a second driving member 33 provided on the battery carrier 1 and used to drive the fixing frame 32 to lift.

[0050] The lifting structure of the embodiment of the present application includes a fixed frame 32 and a second driving member 33. The second driving member 33 is installed on the battery carrier 1, the fixed frame 32 is installed on the second driving member 33, and the liquid injection cup 31 is fixedly installed on the fixed frame 32. The second driving member 33 can drive the fixed frame 32 to lift, so that the liquid injection cup 31 presses tightly against the liquid injection port 54 at the top of the battery 5.

[0051] Exemplarily, the second driving member 33 can be an electric cylinder or a lead screw. When an electric cylinder is adopted, two groups of electric cylinders can be used to synchronously drive the fixed frame 32 to lift, thereby realizing the lifting of the liquid injection cup 31; when a lead screw is adopted, two groups of lead screws penetrate the fixed frame 32, and the fixed frame 32 is slidably connected with the lead screws. Threaded sleeves that are threadedly connected to the lead screws are arranged above and below the fixed frame 32. The fixed frame 32 can be clamped and positioned by the threaded sleeves on the upper and lower sides. By adjusting the positions of the threaded sleeves on the upper and lower sides, the height position of the fixed frame 32 can be adjusted.

[0052] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary liquid injection device, and the battery rotary liquid injection device further includes a vacuum pumping device and a gas supply device for communicating with the liquid injection cup 31.

[0053] The battery rotary liquid injection device of the embodiment of the present application further includes a vacuum pumping device and a gas supply device for communicating with the liquid injection cup 31, so that the battery rotary liquid injection device can not only perform liquid injection in an isobaric liquid injection manner, but also perform liquid injection in a differential pressure liquid injection manner.

[0054] Exemplarily, the liquid injection cup 31 is docked with the liquid injection port 54 at the top of the battery 5, and electrolyte is injected into the liquid injection cup 31. The vacuum pumping device and the gas supply device are respectively connected to the liquid injection cup 31 through air pipes. The vacuum pumping device and the gas supply device are used to evacuate and apply high pressure to the liquid injection cup 31 in sequence, so that the electrolyte can quickly enter the battery 5 under the action of pressure.

[0055] During the liquid injection process, the rotation mechanism 4 can be used to drive the battery carrier 1 to swing horizontally at the same time, and the centrifugal force generated by the swing can be used to accelerate the liquid injection speed. It should be noted that since the air pipe restricts the rotation of the battery 5 with the battery carrier 1, but the air pipe can be twisted and restored within a certain range, a horizontal swing method can be adopted instead of horizontal rotation.

[0056] It should be noted that both isobaric liquid injection and differential pressure liquid injection belong to battery liquid injection processes. Among them, isobaric liquid injection is to place the battery 5 and the liquid injection cup 31 containing electrolyte in a high-pressure cavity at the same time. After the cavity is sealed, the cavity is evacuated and pressurized, and then evacuated and pressurized again, and the cycle is repeated in sequence; since there is a cavity, the cavity contains the battery 5, and the pressure inside and outside the battery 5 remains the same during the liquid injection process, so it is called isobaric liquid injection.

[0057] In differential pressure liquid injection, there is no cavity compared with equal pressure liquid injection. After the liquid injection cup 31 containing the electrolyte is docked with the battery 5, the liquid injection cup 31 is evacuated and pressurized, then evacuated and pressurized again, and this cycle is repeated in sequence.

[0058] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary liquid injection device. The rotary mechanism 4 of the battery rotary liquid injection device includes a mounting table 41 for connecting the battery carrier 1, and a third driving member 42 for driving the mounting table 41 to rotate horizontally.

[0059] The rotary mechanism 4 of the embodiment of the present application includes a mounting table 41 and a third driving member 42. The mounting table 41 is used to carry and fix the battery carrier 1, and the third driving member 42 is used to drive the mounting table 41 to rotate, so as to realize the rotation of the battery carrier 1 along with the mounting table 41.

[0060] Exemplarily, the third driving member 42 can be a motor. The mounting table 41 is fixedly installed on the output shaft of the motor. The mounting table 41 is horizontally arranged, and the output shaft of the motor is perpendicular to the horizontal plane. The battery carrier 1 can be installed on the mounting table 41 by means of bolts or clamping.

[0061] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary liquid injection device. A clamping block 43 is arranged on the top surface of the mounting table 41 of the battery rotary liquid injection device, and a clamping position 12 cooperating with the clamping block 43 is arranged on the bottom surface of the battery carrier 1.

[0062] A clamping block 43 is arranged on the top surface of the mounting table 41 of the embodiment of the present application, and a clamping position 12 is arranged on the bottom surface of the battery carrier 1. By using the clamping position 12 to cooperate with the clamping block 43, the battery carrier 1 can be positioned on the mounting table 41. The mounting table 41 can transmit torque through the clamping block 43, and then drive the battery carrier 1 to rotate horizontally.

[0063] Exemplarily, three clamping blocks 43 are fixedly connected to the top surface of the mounting table 41 in this embodiment. The three clamping blocks 43 are spaced apart around the rotation center of the third driving member 42. The clamping position 12 is three clamping grooves opened on the bottom surface of the battery carrier 1. By using the three clamping grooves to adapt to the three clamping blocks 43, the battery carrier 1 can be conveniently positioned on the mounting table 41, and at the same time, the stability of the battery carrier 1 during horizontal rotation can be ensured.

[0064] In some alternative embodiments: Refer to Figures 1 to 5 As shown, the embodiment of the present application provides a battery rotary liquid injection device. The battery 5 of the battery rotary liquid injection device includes a rectangular shell 51 with an opening, an electric core 52 located inside the rectangular shell 51, and a top cover 53 closing the rectangular shell 51. A liquid injection port 54 is provided on the top cover 53.

[0065] The battery 5 in the embodiment of the present application includes a rectangular housing 51, a battery cell 52, and a top cover 53. The battery cell 52 is located in the rectangular housing 51 and is encapsulated by the top cover 53. A liquid injection port 54 is provided on the top cover 53. When the battery 5 is injected with liquid by using a battery rotary liquid injection device, the electrolyte can quickly enter the rounded corners on both sides of the battery cell 52 under the action of centrifugal force, thereby improving the liquid injection speed.

[0066] It should be noted that before the battery 5 is injected with liquid, the battery cell 52 wound inside the battery 5 will be pre-thermally pressed and shaped in advance. After the battery cell 52 is thermally pressed, it becomes very tight, making it difficult for the liquid injection and infiltration. However, when the battery cell 52 is thermally pressed, the rounded corners on both sides of the battery cell 52 will not be pressed, so they are relatively loose. The embodiment of the present application adopts rotary liquid injection, which can just rotate the injected electrolyte to both sides, thereby preventing the electrolyte from accumulating at the liquid injection port 54, so as to achieve the purpose of improving the liquid injection speed.

[0067] 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, and therefore should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can 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.

[0068] It should be noted that in the present application, relational 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 "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0069] 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 battery rotary injection device, characterized in that Comprising: A battery carrier (1) provided with a clamping mechanism (2) for clamping a battery (5) and a liquid injection mechanism (3) for docking with a liquid injection port (54) at the top of the battery (5); A rotating mechanism (4) for driving the battery carrier (1) to rotate horizontally so that the battery (5) and the liquid injection mechanism (3) rotate synchronously; The clamping mechanism (2) includes a fixed plate (21) and a movable plate (22) provided on the battery carrier (1), and a first driving member (23) for driving the movable plate (22) to approach the fixed plate (21) to clamp the battery (5).

2. The battery rotating liquid injection device according to claim 1, wherein: The clamping mechanism (2) further includes a buffer pad (24) provided between the fixed plate (21) and the movable plate (22) and used for separating the battery (5).

3. The battery rotating liquid injection device according to claim 1, wherein: An installation plate (11) is provided on the battery carrier (1), and the first driving member (23) is a screw threadedly connected to the installation plate (11) and used for pressing against the movable plate (22).

4. The battery rotating liquid injection device according to claim 1, wherein: The liquid injection mechanism (3) includes a liquid injection cup (31) and a lifting structure provided on the battery carrier (1) and used for driving the liquid injection cup (31) to press against the liquid injection port (54) at the top of the battery (5).

5. The battery rotating liquid injection device according to claim 4, wherein: The lifting structure includes a fixing frame (32) for fixing the liquid injection cup (31), and a second driving member (33) provided on the battery carrier (1) and used for driving the fixing frame (32) to lift and lower.

6. The battery rotating liquid injection device according to claim 4, wherein: It further includes a gas extraction device and a gas supply device for communicating with the liquid injection cup (31).

7. The battery rotating liquid injection device according to claim 1, wherein: The rotating mechanism (4) includes an installation table (41) for connecting the battery carrier (1), and a third driving member (42) for driving the installation table (41) to rotate horizontally.

8. The battery rotating liquid injection device according to claim 7, wherein: A clamping block (43) is provided on the top surface of the installation table (41), and a clamping position (12) matching the clamping block (43) is provided on the bottom surface of the battery carrier (1).

9. The battery rotating liquid injection device according to claim 1, wherein: The battery (5) includes a rectangular shell (51) with an opening, an electric core (52) located inside the rectangular shell (51), and a top cover (53) for closing the rectangular shell (51), and a liquid injection port (54) is provided on the top cover (53).

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