Battery cell liquid injection, feeding and weighing device
By designing a cell liquid injection and weighing device, the cells are changed from a horizontal to a vertical position for direct weighing and liquid injection, solving the problems of low efficiency and cumbersome process of traditional devices, and realizing efficient cell production.
Patent Information
- Application Number
- CN202423263310.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional cell weighing devices are inefficient when weighing pouch cells in a horizontal position, and the liquid injection process for switching to a vertical position is cumbersome, which affects production efficiency.
A battery cell liquid injection and weighing device was designed, including a feeding conveyor belt, a vertical placement mechanism, a weighing worktable, a liquid injection mechanism, and a transfer mechanism. The vertical placement mechanism changes the battery cell from a flat position to a vertical position, and after weighing, it is directly transported to the liquid injection process, reducing space occupation and simplifying the process.
It improves weighing efficiency, reduces space occupation, simplifies the cell transfer process, optimizes production line layout and process, and protects the cells from damage.
Smart Images
Figure CN223941978U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lithium battery production, and in particular to a cell liquid injection and weighing device. Background Technology
[0002] In the production process of lithium batteries, after the cells are housed in aluminum-plastic film, they need to go through the process of injecting electrolyte. Electrolyte injection is a crucial step in the production process of lithium batteries. The quality of the electrolyte injection directly affects the quality and lifespan of the lithium batteries. The quality of electrolyte injection is mainly tested by weighing the cells before and after the electrolyte injection.
[0003] In existing technologies, traditional cell weighing devices typically require cells to be weighed in a flat position because the contact area between the cell and the weighing device is larger, the force is more uniform, and the detection accuracy is higher when the cell is laid flat. However, for many cells, especially pouch cells, weighing them in a flat position presents the following problems: 1. Pouch cells have a large planar dimension after packaging. When using traditional planar weighing devices, the space occupied by weighing a single pouch cell is large, resulting in low weighing efficiency and affecting the production efficiency of subsequent processes; 2. After weighing the pouch cells flat, the battery bag of the pouch cells needs to be widened and filled with liquid during the liquid injection process. The pouch cells need to be changed from a flat position to a vertical position before they can enter the liquid injection process. This process is cumbersome and not simplified enough, and urgently needs to be solved. Utility Model Content
[0004] To address the shortcomings of the prior art, this application provides a battery cell liquid injection and weighing device.
[0005] The above-mentioned inventive objective of this application is achieved through the following technical solutions:
[0006] Feeding conveyor belt, used to transport battery cells;
[0007] A vertical placement mechanism is provided on the discharge side of the feeding conveyor belt and is used to pick up the battery cells that are in a horizontal position and change them to a vertical position.
[0008] A weighing workbench is provided with a number of weighing sensors arranged on it. Each weighing sensor is provided with a weighing base for vertically discharging the battery cell. The weighing sensor is used to detect the weight of the battery cell in the weighing base.
[0009] The liquid injection mechanism is used to inject liquid into the battery cells;
[0010] A transfer mechanism is disposed between the vertical placement mechanism, the weighing workbench and the liquid injection mechanism, and is used to transport the battery cells picked up by the vertical placement mechanism to the corresponding weighing seat, and to transport the weighed battery cells to the liquid injection mechanism.
[0011] By adopting the above technical solution, during operation, the feeding conveyor belt is responsible for transporting the battery cells from the front-end production line to the vertical placement mechanism. The vertical placement mechanism picks up the battery cells and changes them from a flat position to a vertical position. Then, the transfer mechanism transports the battery cells, still in a vertical position, to the corresponding weighing seat on the weighing workbench. At this time, the corresponding weighing sensor immediately detects the weight of the battery cell and feeds back the data. Then, the transfer mechanism transports the battery cells, still in a vertical position, to the liquid injection mechanism for subsequent liquid injection. By setting up a weighing seat that can vertically discharge the battery cells, the space occupied by traditional flat weighing can be reduced. In the same area, more battery cells can be weighed, thereby improving weighing efficiency. Furthermore, by combining it with the vertical placement mechanism, the battery cells can be changed to a vertical position before the transfer mechanism picks them up, i.e., before the battery cells are weighed, thus eliminating the need to change them again before liquid injection. This ensures that the battery cells remain in a vertical position throughout the weighing and liquid injection process, thereby simplifying the transfer process, improving battery production efficiency, and optimizing the production line layout and process.
[0012] In a preferred embodiment, the present application may be further configured as follows: the weighing base includes a base plate, a plurality of support plates are symmetrically arranged on both sides of the base plate, and end plates are arranged at both ends of the base plate. A weighing slot for vertically placing the power cell is formed between the base plate, the support plates and the end plates. The base plate is vertically provided with a side sealing groove for accommodating the side sealing edge of the power cell. The end plate is vertically provided with a tab groove. When the side sealing edge of the power cell is located in the side sealing groove, the tab of the power cell overlaps and engages with the tab groove.
[0013] By adopting the above technical solution, the base plate serves as the basic support part of the weighing seat, which plays the role of transferring the weight of the battery cell. The symmetrically arranged support plates are used to support the side walls of the battery cell. Together with the end plates, they form a complete weighing slot. The weighing slot formed by the three can provide a vertical position for the battery cell. Furthermore, the side sealing slot and the tab slot can provide room for the side sealing edge and the tab of the battery cell, while avoiding unnecessary pressure and damage to the battery cell during the weighing process, thus enhancing the protection of the battery cell.
[0014] In a preferred embodiment, this application can be further configured such that several of the pallets are inclinedly disposed on the base plate, so that the width of the weighing slot gradually decreases from the outside to the inside.
[0015] By adopting the above technical solution, several symmetrically and inclined trays form a funnel-shaped slot structure. This structure helps the transfer mechanism to automatically center when picking up the battery cells and placing them into the weighing slot, which facilitates the adjustment of the battery cell position, improves production efficiency, and makes it easier to remove the battery cells.
[0016] In a preferred embodiment, the present application may be further configured such that: the vertical placement mechanism includes a vertical placement lifting plate and a first drive component for driving the vertical placement lifting plate to move vertically; the vertical placement lifting plate is rotatably provided with a vertical placement rotating shaft; a plurality of vertical placement mounting plates are arranged axially on the vertical placement rotating shaft; suction cups are provided on the vertical placement mounting plates; the suction cups are connected to an external air pump and are used to abut against the battery cell; and the vertical placement lifting plate is provided with a second drive component for driving the vertical placement rotating shaft to rotate.
[0017] By adopting the above technical solution, during operation, the second drive component first drives the vertical rotating shaft to rotate the vertical mounting plate, thereby rotating the suction cup to directly above the feeding conveyor belt. After the feeding conveyor belt transports the battery cell to the vertical mechanism, the first drive component drives the vertical lifting plate to move vertically, thereby driving the suction cup to descend to the battery cell until it touches the battery cell. At this time, the external air pump is started, causing the suction cup to form a negative pressure to adsorb the battery cell, completing the pickup operation. Subsequently, the first drive component is started, driving the vertical lifting plate to rise vertically, so that the battery cell rises with the vertical lifting plate, leaving the original position until it rises to a certain height. Then, the second drive component is started to drive the vertical rotating shaft to rotate, causing the battery cell to gradually change from a horizontal state to a vertical state, and then wait for the transfer mechanism to hand it over, thereby realizing the process of changing the battery cell from a horizontal state to a vertical state.
[0018] In a preferred embodiment, this application may be further configured such that: the second drive assembly includes a transmission gear, a transmission rack, and a cylinder, the transmission gear being coaxially and fixedly connected to the vertically rotating shaft, the end of the transmission rack being fixedly connected to the piston rod of the cylinder and meshing with the transmission gear, and the cylinder being mounted on the vertically lifting plate.
[0019] By adopting the above technical solution, when the battery cell needs to be rotated, the cylinder drives the piston rod to move the transmission rack in a straight line. At the same time, under the meshing action of the transmission rack and the transmission gear, the transmission gear drives the vertical rotating shaft to rotate, thereby realizing the rotation of the battery cell. In this way, the precise meshing of the transmission rack and the transmission gear can improve the accuracy of the battery cell rotation, providing a guarantee for subsequent transfer and weighing processes.
[0020] In a preferred embodiment, the present application may be further configured such that: the transfer mechanism includes a transfer work frame, a dual-axis moving module, and a pneumatic finger; the dual-axis moving module is mounted on the transfer work frame; the pneumatic finger is vertically mounted on the dual-axis moving module; the dual-axis moving module is used to drive the pneumatic finger to perform vertical and lateral displacements between the vertical placement mechanism, the weighing seat, and the liquid injection mechanism; and the pneumatic finger is used to grasp the battery cell in the vertical placement state.
[0021] By adopting the above technical solution, after the battery cell completes the transformation to a vertical position under the action of the vertical placement mechanism, the dual-axis moving module drives the pneumatic fingers to move laterally to above the battery cell, and then move vertically to allow the pneumatic fingers to grip the battery cell in the vertical position. Under the action of the dual-axis moving module, the battery cell is then transferred to the corresponding weighing seat on the weighing workbench. After the weighing process is completed, the battery cell, which is still in the vertical position, is gripped and transported to the liquid injection mechanism to complete the subsequent liquid injection process. Among these, using pneumatic fingers as a gripping tool can facilitate the gripping of the battery cell's battery bag side seal, thereby reducing damage to the battery cell and adapting to the working conditions of the battery cell in the vertical position.
[0022] In a preferred embodiment, this application can be further configured as follows: the dual-axis moving module includes a linear module, a cylinder, and a transfer mounting plate. The linear module is mounted on one side of the transfer work frame, and a guide rail is provided on the other side of the transfer work frame. The transfer mounting plate is slidably disposed between the linear module and the guide rail. The linear module is used to drive the transfer mounting plate to move laterally. The cylinder is vertically mounted on the transfer mounting plate, and a pneumatic finger is fixedly connected to the piston rod of the cylinder.
[0023] By adopting the above technical solution, the linear module can drive the cylinder to make lateral displacement. At the same time, the guide rail can provide guidance for the transfer and installation plate and improve the sliding stability. The pneumatic finger is fixedly connected to the piston rod of the cylinder so that the cylinder can drive the pneumatic finger to make vertical displacement, thereby realizing the dual-axis movement of the pneumatic finger.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. By setting up a weighing stand that can vertically discharge cells, the space occupied by traditional flat weighing can be reduced. In the same area, more cells can be weighed, thereby improving weighing efficiency. Furthermore, by combining it with a vertical placement mechanism, the cells can be turned into a vertical position before the transfer mechanism picks them up, i.e. before the cells are weighed. This eliminates the need to turn them again before subsequent electrolyte injection, ensuring that the cells remain in a vertical position throughout the weighing and electrolyte injection process. This simplifies the transfer process, improves battery production efficiency, and optimizes the production line layout and process.
[0026] 2. The weighing slot formed between the base plate, support plate, and end plate provides a vertical position for the battery cell. Furthermore, the side sealing slot and electrode slot provide space for the side sealing edge and electrode of the battery cell while preventing the battery cell from being subjected to unnecessary pressure and damage during the weighing process, thus enhancing the protection of the battery cell.
[0027] 3. The second drive assembly drives the vertical rotating shaft to rotate the vertical mounting plate, causing the suction cup to rotate directly above the feeding conveyor belt. After the feeding conveyor belt transports the battery cell to the vertical mechanism, the first drive assembly drives the vertical lifting plate to move vertically, causing the suction cup to descend to the battery cell until it touches the battery cell. At this time, the external air pump is activated, causing the suction cup to form a negative pressure to adsorb the battery cell, completing the pickup operation. Then, the first drive assembly is activated, driving the vertical lifting plate to rise vertically, so that the battery cell rises with the vertical lifting plate, leaving the original position until it rises to a certain height. Then, the second drive assembly is activated to drive the vertical rotating shaft to rotate, causing the battery cell to gradually change from a horizontal state to a vertical state, and then wait for the transfer mechanism to hand it over, thus realizing the process of changing the battery cell from a horizontal state to a vertical state. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of the cell liquid injection and weighing device in one embodiment of this application;
[0029] Figure 2 This is a schematic diagram of the assembly of the weighing stand and the battery cell in a vertical position according to one embodiment of this application;
[0030] Figure 3 This is a schematic diagram of the vertical placement mechanism in one embodiment of this application;
[0031] Figure 4 yes Figure 1 A magnified view of part A in the diagram.
[0032] Reference numerals: B1, feeding conveyor belt; B2, vertical placement mechanism; B21, vertical placement lifting plate; B22, first drive assembly; B23, vertical placement rotating shaft; B24, vertical placement mounting plate; B25, suction cup; B26, second drive assembly; B261, transmission gear; B262, transmission rack; B3, weighing workbench; B4, transfer mechanism; B41, transfer work frame; B42, dual-axis moving module; B421, linear module; B422, transfer mounting plate; B423, guide rail; B43, pneumatic finger; B5, load cell; B6, weighing base; B61, base plate; B62, pallet; B63, end plate; B64, side sealing groove; B65, electrode lug groove. Detailed Implementation
[0033] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.
[0034] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.
[0035] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.
[0036] A battery cell liquid injection and weighing device of this application is described below with reference to the accompanying drawings.
[0037] Reference Figures 1 to 4The battery cell injection and weighing device includes a feeding conveyor belt B1, a vertical placement mechanism B2, a weighing worktable B3, an injection mechanism, and a transfer mechanism B4. The feeding conveyor belt B1 is used to transport the battery cells. The vertical placement mechanism B2 is located on the discharge side of the feeding conveyor belt B1 and is used to pick up battery cells in a horizontal position and change them to a vertical position. The weighing worktable B3 is equipped with several weighing sensors B5, and each weighing sensor B5 is equipped with a weighing seat B6 for vertically discharging the battery cells. Sensor B5 is used to detect the weight of the battery cell inside the weighing stand B6. The liquid injection mechanism (not shown in the figure) is used to inject liquid into the battery cell. The transfer mechanism B4 is located between the vertical placement mechanism B2, the weighing table B3, and the liquid injection mechanism, and is used to transport the battery cell picked up by the vertical placement mechanism B2 to the corresponding weighing stand B6, and to transport the weighed battery cell to the liquid injection mechanism. During operation, the feeding conveyor belt B1 is responsible for transporting the battery cell from the front-end production line to the vertical placement mechanism B2. After picking up the battery cell and changing it from a flat to an upright position, the transfer mechanism B4 transports the upright battery cell to the corresponding weighing seat B6 on the weighing workbench B3. At this time, the corresponding weighing sensor B5 immediately detects the weight of the battery cell and feeds back the data. Then, the transfer mechanism B4 transports the upright battery cell to the liquid injection mechanism for the subsequent liquid injection process. By setting up the weighing seat B6 that can discharge the battery cell vertically, the space occupied by traditional flat weighing can be reduced. More battery cells can be weighed in the same area, thereby improving weighing efficiency. Furthermore, by combining it with the vertical placement mechanism B2, the battery cell can be changed to an upright position before the transfer mechanism B4 picks it up, that is, before the battery cell is weighed, so as to eliminate the need to change it again before liquid injection. This ensures that the battery cell remains in an upright position throughout the weighing and liquid injection process, thereby simplifying the transfer process, improving the efficiency of battery production, and optimizing the production line layout and process.
[0038] It should be noted that the load cell B5 is a device that converts a mass signal into a measurable electrical signal output. It can convert the gravity acting on the object being measured into a measurable output signal in a certain proportion, thereby realizing the accurate measurement of the object's mass. In this embodiment, it is paired with a weighing stand B6 that can vertically place the battery cell. The weight of the battery cell is obtained by measuring the weight of the weighing stand B6 with the battery cell. The liquid injection mechanism is a conventional battery cell liquid injection device on the market, used to complete the liquid injection process of the battery cell. The structure and implementation principle of the load cell B5, as well as the specific structure of the liquid injection mechanism, are common knowledge to those skilled in the art and will not be described in detail here.
[0039] Specifically, the weighing base B6 includes a base plate B61, on which several support plates B62 are symmetrically arranged on opposite sides. End plates B63 are provided at opposite ends of the base plate B61. The base plate B61, support plates B62, and end plates B63 form a weighing slot for vertically placing the power supply core. The base plate B61 has a vertically opening side sealing groove B64 for accommodating the side sealing edge of the power supply core. The end plates B63 have vertically opening tab grooves B65. When the side sealing edge of the power supply core is located in the side sealing groove B64, the tab of the power supply core engages with the tab groove B65. In this assembly, the base plate B61 serves as the basic support for the weighing seat B6, transferring the weight of the battery cell. The symmetrically arranged support plates B62 support the side walls of the battery cell, and together with the end plate B63, they form a complete weighing slot. The weighing slot formed by these three components provides a vertical position for the battery cell. Furthermore, the side sealing slot B64 and the tab slot B65 allow space for the side sealing edge and tab of the battery cell, while preventing the battery cell from being subjected to unnecessary pressure and damage during the weighing process, thus enhancing the protection of the battery cell.
[0040] Furthermore, several pallets B62 are inclinedly arranged on the base plate B61 so that the width of the weighing slot gradually decreases from the outside to the inside. The symmetrical and inclined pallets B62 form a funnel-shaped slot structure. This structure helps the transfer mechanism B4 to automatically center when picking up the battery cell and placing it into the weighing slot, which facilitates the adjustment of the battery cell position, improves production efficiency, and facilitates the removal of the battery cell.
[0041] Preferably, the vertical lifting mechanism B2 includes a vertical lifting plate B21 and a first driving component B22 for driving the vertical lifting plate B21 to move vertically. The first driving component B22 can be a linear drive device such as a cylinder or electric cylinder; no limitation is made here. The vertical lifting plate B21 is rotatably equipped with a vertical rotating shaft B23. A plurality of vertical mounting plates B24 are arranged axially on the vertical rotating shaft B23. Suction cups B25 are provided on the vertical mounting plates B24, connected to an external air pump (not shown in the figure) and used to contact the battery cell. The vertical lifting plate B21 is equipped with a second driving component B26 for driving the vertical rotating shaft B23 to rotate. During operation, the second driving component B26 first drives the vertical rotating shaft B23 to rotate the vertical mounting plates B24, thereby driving the suction cups B24 to rotate. 25 rotates to be directly above the feeding conveyor belt B1. After the feeding conveyor belt B1 conveys the battery cell to the vertical placement mechanism B2, the first drive component B22 drives the vertical placement lifting plate B21 to move vertically, so as to drive the suction cup B25 to descend to the battery cell until it touches the battery cell. At this time, the external air pump starts, so that the suction cup B25 forms a negative pressure to adsorb the battery cell and complete the picking operation. Then the first drive component B22 starts and drives the vertical placement lifting plate B21 to rise vertically, so that the battery cell rises with the vertical placement lifting plate B21, leaving the original position until it rises to a certain height. Then the second drive component B26 starts to drive the vertical placement rotating shaft B23 to rotate, so that the battery cell gradually changes from a horizontal state to a vertical state and waits for the transfer mechanism B4 to hand it over, thus realizing the process of changing the battery cell from a horizontal state to a vertical state.
[0042] Specifically, the second drive assembly B26 includes a transmission gear B261, a transmission rack B262, and a cylinder. The transmission gear B261 is coaxially and fixedly connected to the vertically rotating shaft B23. The end of the transmission rack B262 is fixedly connected to the piston rod of the cylinder and meshes with the transmission gear B261. The cylinder is mounted on the vertically lifting plate B21. When the battery cell needs to be rotated, the cylinder drives the piston rod to move the transmission rack B262 linearly. At the same time, under the meshing action of the transmission rack B262 and the transmission gear B261, the transmission gear B261 drives the vertically rotating shaft B23 to rotate, thereby realizing the rotation of the battery cell. The precise meshing of the transmission rack B262 and the transmission gear B261 can improve the accuracy of the battery cell rotation, providing a guarantee for subsequent transfer and weighing processes.
[0043] Additionally, the transfer mechanism B4 includes a transfer frame B41, a dual-axis moving module B42, and a pneumatic finger B43. The dual-axis moving module B42 is mounted on the transfer frame B41, and the pneumatic finger B43 is vertically mounted on the dual-axis moving module B42. The dual-axis moving module B42 is used to drive the pneumatic finger B43 to perform vertical and lateral displacement between the vertical placement mechanism B2, the weighing seat B6, and the liquid injection mechanism. The pneumatic finger B43 is used to grasp the battery cell in the vertical position. After the battery cell completes the vertical position change under the action of the vertical placement mechanism B2, the dual-axis moving module B42... 42 drives the pneumatic finger B43 to move laterally above the battery cell, and then moves vertically to grip the battery cell in its vertical position. Under the action of the dual-axis moving module B42, it is then transferred to the corresponding weighing seat B6 on the weighing workbench B3. After the weighing process is completed, the battery cell, which is still in its vertical position, is gripped and transported to the liquid injection mechanism to complete the subsequent liquid injection process. The use of the pneumatic finger B43 as a gripping tool can easily grip the battery bag side seal of the battery cell, thereby reducing damage to the battery cell and adapting to the working conditions of the battery cell in its vertical position.
[0044] It should be noted that, in this embodiment, the aforementioned dual-axis moving module B42 includes a linear module B421, a cylinder, and a transfer mounting plate B422. The linear module B421 is mounted on one side of the transfer work frame B41, and a guide rail B423 is provided on the other side of the transfer work frame B41. The transfer mounting plate B422 is slidably disposed between the linear module B421 and the guide rail B423. The cylinder is vertically mounted on the transfer mounting plate B422 so that the linear module B421 can drive the cylinder to perform lateral displacement. At the same time, the guide rail B423 can provide guidance for the transfer mounting plate B422 and improve the stability of sliding. The pneumatic finger B43 is fixedly connected to the piston rod of the cylinder so that the cylinder can drive the pneumatic finger B43 to perform vertical displacement, thereby realizing the dual-axis movement of the pneumatic finger B43.
[0045] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A battery cell electrolyte filling and weighing device, characterized in that, include: Feeding conveyor belt (B1), which is used to transport battery cells; A vertical placement mechanism (B2) is provided on the discharge side of the feeding conveyor belt (B1) and is used to pick up the battery cells in the horizontal position and change them to the vertical position. A weighing workbench (B3) is provided with a plurality of weighing sensors (B5) arranged on it. Each weighing sensor (B5) is provided with a weighing base (B6) for vertically discharging the battery cell. The weighing sensor (B5) is used to detect the weight of the battery cell in the weighing base (B6). The liquid injection mechanism is used to inject liquid into the battery cells; A transfer mechanism (B4) is disposed between the vertical placement mechanism (B2), the weighing workbench (B3) and the liquid injection mechanism, and is used to transport the battery cell picked up by the vertical placement mechanism (B2) to the corresponding weighing seat (B6) and to transport the weighed battery cell to the liquid injection mechanism.
2. The battery cell electrolyte filling and weighing device as described in claim 1, characterized in that, The weighing stand (B6) includes a base plate (B61), on which several support plates (B62) are symmetrically arranged on opposite sides. End plates (B63) are provided at opposite ends of the base plate (B61). A weighing slot for vertically placing the power supply core is formed between the base plate (B61), the support plates (B62), and the end plates (B63). The base plate (B61) has a vertically opened side sealing groove (B64) for accommodating the side sealing edge of the power supply core. The end plate (B63) has a vertically opened tab groove (B65). When the side sealing edge of the power supply core is located in the side sealing groove (B64), the tab of the power supply core overlaps and engages with the tab groove (B65).
3. The battery cell electrolyte filling and weighing device as described in claim 2, characterized in that, Several of the aforementioned pallets (B62) are inclinedly disposed on the base plate (B61) so that the width of the weighing slot gradually decreases from the outside to the inside.
4. The battery cell electrolyte filling and weighing device as described in claim 1, characterized in that, The vertical placement mechanism (B2) includes a vertical placement lifting plate (B21) and a first drive assembly (B22) for driving the vertical placement lifting plate (B21) to move vertically. The vertical placement lifting plate (B21) is rotatably provided with a vertical placement rotating shaft (B23). A plurality of vertical placement mounting plates (B24) are arranged axially on the vertical placement rotating shaft (B23). A suction cup (B25) is provided on the vertical placement mounting plate (B24). The suction cup (B25) is connected to an external air pump and is used to abut against the battery cell. The vertical placement lifting plate (B21) is provided with a second drive assembly (B26) for driving the vertical placement rotating shaft (B23) to rotate.
5. The battery cell electrolyte filling and weighing device as described in claim 4, characterized in that, The second drive assembly (B26) includes a transmission gear (B261), a transmission rack (B262), and a cylinder. The transmission gear (B261) is coaxially and fixedly connected to the vertical rotating shaft (B23). The end of the transmission rack (B262) is fixedly connected to the piston rod of the cylinder and meshes with the transmission gear (B261). The cylinder is mounted on the vertical lifting plate (B21).
6. The battery cell electrolyte filling and weighing device as described in claim 1, characterized in that, The transfer mechanism (B4) includes a transfer frame (B41), a dual-axis moving module (B42), and a pneumatic finger (B43). The dual-axis moving module (B42) is mounted on the transfer frame (B41), and the pneumatic finger (B43) is vertically mounted on the dual-axis moving module (B42). The dual-axis moving module (B42) is used to drive the pneumatic finger (B43) to perform vertical and lateral displacement between the vertical placement mechanism (B2), the weighing seat (B6), and the liquid injection mechanism. The pneumatic finger (B43) is used to grasp the battery cell in the vertical placement state.
7. The battery cell electrolyte filling and weighing device as described in claim 6, characterized in that, The dual-axis moving module (B42) includes a linear module (B421), a cylinder, and a transfer mounting plate (B422). The linear module (B421) is mounted on one side of the transfer work frame (B41), and a guide rail (B423) is provided on the other side of the transfer work frame (B41). The transfer mounting plate (B422) is slidably disposed between the linear module (B421) and the guide rail (B423). The linear module (B421) is used to drive the transfer mounting plate (B422) to move laterally. The cylinder is vertically mounted on the transfer mounting plate (B422), and a pneumatic finger (B43) is fixedly connected to the piston rod of the cylinder.