Battery cell isobaric static device

Abstract

An embodiment of the present invention provides a battery cell isobaric static device, which belongs to the technical field of automated mechanical equipment. The battery cell isobaric static device includes: a liquid injection component for storing electrolyte; the placement component includes a seal and a positioning column, and the placement position is arranged in the seal; the positioning column is arranged on the side of the seal to enable docking and positioning when connected with the liquid injection component; a clamping component, the clamping component is arranged at the top of the liquid injection component, and the clamping component is pressed in the direction of the placement component and fits and seals with the seal to allow the battery cell group to be infiltrated with electrolyte in a sealed environment. The battery cell isobaric static device provided by the present invention simplifies the existing battery cell isobaric static, reduces its complexity, greatly reduces the footprint of the battery cell isobaric static device, and realizes the flexible combination of the entire static processing system.

Description

Technical Field

[0001] The present invention relates to the technical field of automated mechanical equipment, and in particular to a battery cell isobaric static device. Background Art

[0002] Whether the battery electrolyte is fully infiltrated directly affects the final performance of the battery. Insufficient battery electrolyte infiltration will result in low pressure, low capacity, lithium precipitation and other phenomena, and in serious cases, there will be safety hazards. Therefore, when manufacturing lithium-ion batteries, it is necessary to ensure that the battery electrolyte can be fully infiltrated. The existing battery cell isobaric static mechanism is mainly composed of a static storage RAGV and a battery cell static cover. The overall operation process is that the tray with completed battery cell injection is placed in the RAGV, and the RAGV then sends the tray to the static cover for static. After the static is completed, the RAGV then transports the completed battery cell out. In the existing design, the entry and exit of the tray needs to be completed by the RAGV, and the RAGV itself also needs to occupy a certain area. Due to the large cross-sectional area of ​​the static cover, a large pressing force is required to achieve the sealing of the mechanism when applying positive and negative pressure. At the same time, the large area of ​​the static cover further reduces the utilization rate of the production site. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a battery cell isobaric static device to solve the problems of existing battery cell isobaric static devices occupying a large area and requiring a large pressing force.

[0004] In order to achieve the above-mentioned object, an embodiment of the present invention provides a battery cell isobaric static device, the battery cell isobaric static device comprising: a liquid injection component for storing electrolyte;

[0005] A placement component is provided at the bottom end of the injection component. The placement component is provided with a placement position for storing the battery cell group. When the battery cell group is in a static state, it is connected to the injection component so that the electrolyte in the injection component is injected into the placement component. The placement component includes:

[0006] a sealing member, wherein the placement position is arranged in the sealing member;

[0007] A positioning post is provided on the side of the sealing member, and is used to position the battery cell group when connected to the injection assembly when the battery cell group is in a static state;

[0008] A pressing assembly is arranged at the top of the injection assembly. When the battery cell group is in a static state, the pressing assembly presses in the direction of the placement assembly and fits and seals with the sealing member to allow the battery cell group to be infiltrated by the electrolyte in a sealed environment.

[0009] Optionally, the placement component further includes:

[0010] A cell base is provided on the placement position in the sealing member and is used for placing the cell;

[0011] The battery core fixing block is arranged on the battery core base to limit the position of the battery core.

[0012] Optionally, the liquid injection component includes:

[0013] a liquid injection base plate connected to the top end of the positioning column;

[0014] The liquid injection cup is arranged on the liquid injection bottom plate and is used for storing electrolyte.

[0015] The liquid injection head is arranged at the bottom end of the liquid injection cup. When the battery cell group is in a static state, the liquid injection head is tightly fitted with the liquid injection port of the battery cell.

[0016] Optionally, the pressing assembly includes:

[0017] A sealing box, wherein the sealing box and the sealing member are in close contact and sealed when the battery cell group is in a static state;

[0018] A compacting drive is provided at the upper end of the sealing box so as to drive the sealing box to move toward the sealing member.

[0019] Optionally, at least one elastic member is provided on the liquid filling bottom plate, and the elastic member is arranged on one side of the liquid filling cup.

[0020] Optionally, a locking block is further provided on the battery cell base, so as to fix the liquid injection base plate on the positioning column when the battery cell group is in a static state.

[0021] Optionally, a fixing rod is further provided on the liquid injection bottom plate to connect the liquid injection bottom plate with the positioning column.

[0022] Optionally, the pressing assembly further comprises a linear bearing and a guide rod, wherein the guide rod is connected to the sealing box so that the pressing drive performs linear motion toward the sealing element.

[0023] Optionally, the placement assembly is further provided with a tray, and the sealing member and the positioning column are both provided on the tray.

[0024] Optionally, the pressing assembly is further provided with a frame, the linear bearing and the guide rod are both arranged on the frame, and the placement assembly and the injection assembly are arranged at the inner center of the frame.

[0025] Through the above technical solution, the battery cell isobaric static device provided by the present invention, after the battery cell group is placed in the placement component, the pressing component moves toward the placement component, so that it fits and seals with the sealing member in the placement component to form a sealed environment, and then the liquid injection component injects electrolyte into the battery cell group, so that the battery cell group completes the static treatment in the sealed environment and is fully soaked. The battery cell isobaric static device provided by the present invention simplifies the existing battery cell isobaric static treatment, reduces its complexity, greatly reduces the floor space of the battery cell isobaric static device, and realizes the flexible combination of the entire static treatment system. Due to the reduction in its floor space, the pressing force required for the static treatment is also greatly reduced, reducing the complexity of the battery cell isobaric static treatment on the pressure-bearing structure, and greatly reducing its production cost.

[0026] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0028] Figure 1 is a perspective view of a battery cell isobaric stationary device according to one embodiment of the present invention;

[0029] Figure 2 is a perspective view of a placement assembly according to one embodiment of the present invention;

[0030] Figure 3 is a partial elevation view of a placement assembly according to one embodiment of the present invention;

[0031] Figure 4 is a perspective view of a liquid injection assembly according to one embodiment of the present invention;

[0032] Figure 5 is a side view of a liquid injection assembly according to one embodiment of the present invention;

[0033] Figure 6 is a perspective view of a compression assembly according to one embodiment of the present invention;

[0034] Description of Reference Numerals

[0035] 1. Liquid injection component 2. Placement component

[0036] 3. Compression assembly 11, liquid injection base plate

[0037] 12. Liquid injection cup 13. Liquid injection head

[0038] 14. Fixed rod 15. Elastic member

[0039] 21. Seal 22. Positioning column

[0040] 23. Battery base 24. Battery fixing block

[0041] 25. Locking block 26. Tray

[0042] 31. Sealing box 32. Compacting drive

[0043] 33. Linear bearing 34. Guide rod

[0044] 35. Framework DETAILED DESCRIPTION

[0045] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] refer to Figure 1 and Figure 2 , an embodiment of the present invention provides a battery cell isobaric static device, comprising an injection component 1, a placement component 2 and a pressing component 3, wherein the injection component 1 is used to store electrolyte; the placement component 2 is arranged at the bottom end of the injection component 1, and a placement position for storing the battery cell group is provided on the placement component 2. When the battery cell group is in a static treatment, it is connected to the injection component 1 so that the electrolyte in the injection component 1 is injected into the placement component 2, and the placement component 2 includes: a sealing member 21 and a positioning column 22, the placement position is arranged in the sealing member 21; the positioning column 22 is arranged on the side of the sealing member 21, and when the battery cell group is in a static treatment, it is docked and positioned when connected to the injection component 1; the pressing component 3, the pressing component 3 is arranged at the top end of the injection component 1, and when the battery cell group is in a static treatment, the pressing component 3 is pressed in the direction of the placement component 2, and is sealed with the sealing member 21, so that the battery cell group is infiltrated with the electrolyte in a sealed environment.

[0048] Specifically, after the battery cell group is placed in the placement position in the seal 21, the injection component 1 is placed on the top of the seal 21 through the positioning column 22, and matches the battery cell group position of the seal 21, and then the clamping component 3 moves toward the placement component 2, so that the clamping component 3 fits and seals with the seal 21 in the placement component 2 to form a sealed environment, and then the injection component 1 injects electrolyte into the battery cell group, so that the battery cell group completes the static treatment in the sealed environment and is fully soaked. Such a setting simplifies the existing battery cell isobaric static treatment, reduces its complexity, greatly reduces the footprint of the battery cell isobaric static device, and realizes the flexible combination of the entire static treatment system. Due to the reduction in its footprint, it also greatly reduces the pressing force required for static treatment, reduces the complexity of the battery cell isobaric static treatment on the pressure-bearing structure, and greatly reduces its production cost.

[0049] In this embodiment, the number of battery cells in the battery cell group is at least one, the shape of the seal 21 shown in the figure is a cube that matches the size of the battery cell group, the number of positioning columns 22 is at least one, and the number of positioning columns 22 shown in the figure is four, which are distributed on the four sides of the square seal 21, and the length of the positioning columns 22 is greater than the height of the seal 21, so that the injection assembly 1 is placed at the top of the seal 21 and matches the battery cell group position of the seal 21.

[0050] Further, refer to Figure 2 and Figure 3 The placement component 2 also includes a cell base 23 and a cell fixing block 24, wherein the cell base 23 is arranged on the placement position in the seal 21 for placing the cell; the cell fixing block 24 is arranged on the cell base 23 to limit the position of the cell. Specifically, the size of the cell base 23 matches the size of the cell group. The cell base 23 is arranged in the seal 21. The number of cell fixing blocks 24 is at least one, and the number of cell fixing blocks 24 matches the number of cells in the cell group. The multiple cell fixing blocks 24 are arranged at intervals to fix the cell on the cell base 23. Such an arrangement allows the cell group to stably complete the static processing in the seal 21.

[0051] Further, refer to Figure 4 and Figure 5The liquid injection assembly 1 includes a liquid injection base, a liquid injection cup and a liquid injection head. The liquid injection base is connected to the top of the positioning column 22; the liquid injection cup is arranged on the liquid injection base for storing electrolyte. The liquid injection head is arranged at the bottom end of the liquid injection cup. When the battery cell group is in a static treatment state, the liquid injection head fits tightly with the liquid injection port of the battery cell. Specifically, the number of liquid injection cups matches the number of battery cells in the battery cell group. Each battery cell corresponds to a liquid injection cup. The liquid injection cup is provided with a liquid injection head. The size of the liquid injection head matches the size of the liquid injection port of the battery cell. When the liquid injection base is connected to the positioning column 22, the liquid injection head can be fitted and connected with the liquid injection port. Such a design can ensure that the electrolyte stored in the liquid injection cup is injected into the battery cell.

[0052] Further, refer to Figure 6 The pressing assembly 3 includes a sealing box 31 and a pressing drive 32. When the battery cell group is in a static treatment state, the sealing box 31 is sealed against the seal 21; the pressing drive 32 is arranged at the upper end of the sealing box 31 to drive the sealing box 31 to move toward the seal 21. Specifically, in this embodiment, the pressing drive 32 can be one of a cylinder, an electric cylinder, an electric actuator, and a combination of a motor and a screw. The pressing drive 32 is arranged at the upper end of the sealing box 31. When the pressing drive 32 makes a reciprocating linear motion downward, it drives the sealing box 31 to make a reciprocating linear motion. The shape of the sealing box 31 is a square cover that matches the seal 21. The sealing box 31 covers the seal 21 so that a sealed space is formed between the sealing box 31 and the seal 21. Such a design enables the battery cell to complete the static treatment in the sealed space, so that its interior is completely infiltrated by the electrolyte. At the same time, the coordinated arrangement of the sealing box 31 and the sealing member 21 greatly reduces the footprint of the battery cell isobaric static device. Due to the reduction in its footprint, the clamping force required for static treatment is also greatly reduced, reducing the complexity of the battery cell isobaric static device on the pressure-bearing structure, thereby greatly reducing its production cost.

[0053] Further, refer to Figure 3 At least one elastic member 15 is provided on the liquid injection base plate 11, and the elastic member 15 is arranged on one side of the liquid injection cup 12. Specifically, the elastic member 15 can be an elastic part such as an elastic diaphragm, a bellows, and a spring tube. The spring tube is shown in the figure. There is at least one elastic member 15, which is evenly spaced and arranged on the battery cell base 23. Since the height of the battery cell has a certain error, the elastic member 15 can provide a floating amount in the vertical direction to ensure that the liquid injection port and the liquid injection head of the battery cell are tightly fitted and stable.

[0054] Further, refer to Figure 2 and Figure 3The cell base 23 is further provided with a locking block 25 to secure the liquid injection base plate to the positioning posts 22 when the cell assembly is in a static state. Specifically, there is at least one locking block 25, and the illustrated locking blocks 25 are four, which are respectively provided on the four sides close to the seal 21. After the positioning posts 22 and the liquid injection base plate are connected, the liquid injection base plate is locked to the upper end of the placement assembly 2.

[0055] Further, refer to Figure 4 and Figure 5 The liquid injection base plate is further provided with fixing rods to connect the liquid injection base plate to the positioning posts 22. Specifically, the number of fixing rods matches the number of locking blocks 25. In this embodiment, four fixing rods matching the locking blocks 25 are shown. After the positioning posts 22 and the liquid injection base plate are docked, the locking blocks 25 lock the liquid injection base plate to the upper end of the placement component 2. Thereafter, the fixing rods are used to connect the liquid injection base plate and the locking blocks 25. This arrangement allows the liquid injection component 1 to be more stably fixed to the upper end of the placement component 2.

[0056] Further, refer to Figure 6 The clamping assembly 3 further includes a linear bearing 33 and a guide rod 34. The guide rod 34 is connected to the sealing box 31 to enable the clamping driver 32 to perform linear motion toward the sealing member 21. Specifically, the linear bearing 33 is disposed on the guide rod 34, one end of which is connected to the sealing box 31. This arrangement allows the guide rod 34 to guide the clamping driver 32, allowing it to perform linear motion toward the sealing member 21. The linear bearing 33 relies on rolling contact with the guide rod 34 to support the clamping driver 32. This arrangement reduces sliding resistance and reduces power consumption of the clamping driver 32.

[0057] Further, refer to Figure 2 and Figure 3 The placement assembly 2 is further provided with a tray 26, on which the seal 21 and the positioning posts 22 are both arranged. Specifically, in this embodiment, the tray 26 is provided at the bottom end of the seal 21, and its size matches the size of the bottom end of the seal 21, and is used to carry the installation of the battery cell group and other parts.

[0058] Further, refer to Figure 6 The clamping assembly 3 also includes a frame, on which linear bearings 33 and guide rods 34 are mounted. The placement assembly 2 and the injection assembly 1 are positioned centrally within the frame. Specifically, in this embodiment, the illustrated frame is a cube, with guide rods 34 connected to the frame and linear bearings 33 positioned at the junction of the guide rods 34 and the frame. This design allows the clamping assembly 3 to be mounted on the frame.

[0059] Through the above technical solution, the battery cell isobaric static device provided by the present invention places the battery cell group in the placement component 2, and the pressing component 3 moves toward the placement component 2 so that it fits and seals with the seal 21 in the placement component 2 to form a sealed environment. Thereafter, the liquid injection component 1 injects electrolyte into the battery cell group so that the battery cell group completes the static treatment in the sealed environment and is fully soaked. The battery cell isobaric static device provided by the present invention simplifies the existing battery cell isobaric static treatment, reduces its complexity, greatly reduces the floor space of the battery cell isobaric static device, and realizes the flexible combination of the entire static treatment system. Due to the reduction in its floor space, the pressing force required for the static treatment is also greatly reduced, reducing the complexity of the battery cell isobaric static treatment on the pressure-bearing structure, and greatly reducing its production cost.

[0060] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A battery cell isobaric static device, characterized in that: The battery cell isobaric static device comprises: A liquid injection component (1), used for storing electrolyte; A placement component (2) is arranged at the bottom end of the liquid injection component (1). The placement component (2) is provided with a placement position for storing the battery cell group. When the battery cell group is in a static state, it is connected to the liquid injection component (1) so that the electrolyte in the liquid injection component (1) is injected into the placement component (2). The placement component (2) includes: A sealing member (21), wherein the placement position is arranged in the sealing member (21); A positioning column (22) is provided on the side of the sealing member (21) so as to be docked and positioned when connected to the liquid injection assembly (1) when the battery cell group is in a static state; A pressing component (3), the pressing component (3) being arranged at the top end of the liquid injection component (1), and when the battery cell group is in a static state, the pressing component (3) is pressed in the direction of the placement component (2), and is sealed with the sealing member (21), so that the battery cell group is infiltrated with the electrolyte in a sealed environment; The placement component (2) further comprises: A cell base (23) is provided on the placement position in the sealing member (21) and is used for placing the cell; A battery cell fixing block (24) is provided on the battery cell base (23) to limit the position of the battery cell; The pressing assembly (3) comprises: A sealing box (31), wherein when the battery cell group is in a static state, the sealing box (31) and the sealing member (21) are in close contact and sealed relationship; A compacting drive (32), the compacting drive (32) being arranged at the upper end of the sealing box (31) so as to drive the sealing box (31) to move toward the sealing member (21); The pressing assembly (3) further comprises a linear bearing (33) and a guide rod (34), wherein the guide rod is connected to the sealing box (31) so as to enable the pressing drive (32) to perform linear motion in the direction of the sealing element (21).

2. The battery cell isobaric static device according to claim 1, characterized in that: The liquid injection component (1) comprises: A liquid injection base plate (11), the liquid injection base plate (11) being connected to the top end of the positioning column (22); A liquid injection cup (12) is provided on the liquid injection base plate (11) and is used for storing electrolyte; A liquid injection head (13) is provided at the bottom end of the liquid injection cup (12); when the battery cell group is in a static state, the liquid injection head (13) is tightly fitted with the liquid injection port of the battery cell.

3. The battery cell isobaric static device according to claim 2, characterized in that: At least one elastic member (15) is provided on the liquid injection bottom plate (11), and the elastic member (15) is arranged on one side of the liquid injection cup (12).

4. The battery cell isobaric static device according to claim 2, characterized in that: The battery cell base (23) is also provided with a locking block (25) for fixing the liquid injection base plate (11) on the positioning column (22) when the battery cell group is in a static state.

5. The battery cell isobaric static device according to claim 2, characterized in that: A fixing rod (14) is also provided on the liquid injection base plate (11) to connect the liquid injection base plate (11) with the positioning column (22).

6. The battery cell isobaric static device according to claim 1, characterized in that: The placement assembly (2) is further provided with a tray (26), and the sealing member (21) and the positioning column (22) are both arranged on the tray.

7. The battery cell isobaric static device according to claim 1, characterized in that: The pressing assembly (3) is further provided with a frame (35), the linear bearing (33) and the guide rod (34) are both arranged on the frame (35), and the placement assembly (2) and the injection assembly (1) are arranged at the inner center of the frame (35).

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