Clamping linkage device for battery liquid injection
The battery filling clamp mechanism addresses the challenge of uniform pressure distribution in battery filling by using a rod-based framework with guided pressure plates, ensuring even force application and preventing deformation during liquid injection.
Patent Information
- Application Number
- CN202421309872.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-06-11
AI Technical Summary
During the liquid injection process of existing lithium-ion batteries, insufficient strength of the battery housing leads to easily deform during liquid injection, and it is difficult for the fixing device to clamp multiple batteries evenly, affecting production efficiency and reliability.
The screw rod and battery pressure plate linkage device adopting a polygonal frame structure drive the screw rod to rotate, so as to realize the linear movement of the battery pressure plate, combining the guide column and the guide groove to ensure that each battery is subjected to uniform force, and using a stop nut to prevent excessive pressure from causing the battery to deform.
It realizes uniform clamping of multiple batteries at the same time to avoid deformation, improves battery production efficiency and reliability, and ensures safety.
Smart Images
Figure CN223109195U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tool for battery liquid injection, in particular to a battery liquid injection clamping linkage device. Background Art
[0002] At present, lithium-ion batteries have been widely used as an important energy source. Whether in the field of electronic communication or in the field of transportation, etc., they play an extremely important role and have broad application prospects. A lithium-ion battery is a secondary battery, a new type of battery developed on the basis of a lithium battery. It mainly works by the movement of lithium ions between the positive electrode and the negative electrode. Since the 1970s, various high specific energy lithium primary batteries with metallic lithium as the negative electrode have been developed and widely used. Lithium-ion batteries have a high working voltage, high specific energy, large capacity, small self-discharge, good cycle performance, long service life, light weight, and small volume. They are representatives of modern high-performance batteries and are ideal power sources for portable electronic devices such as mobile phones and laptop computers, and have become one of the main power sources for future electric vehicles, cordless power tools, etc. The development history of China's lithium-ion battery industry is not long, but it has developed rapidly. In 2012, the total output of China's lithium-ion batteries reached 41.8 billion. In the international lithium-ion battery market, China, Japan, and South Korea have formed a tripartite confrontation. Generally speaking, however, there is still a large gap between China's lithium-ion battery industry and Japan and South Korea in terms of technological advancement and market competitiveness. The technological development of China's lithium-ion battery industry started from imitating foreign mature technologies. During this process, process innovation was the main achievement of the early development of China's lithium-ion battery industry. In recent years, with the continuous increase in investment in technological innovation, China's lithium-ion battery industry has developed rapidly in technological innovation and formed a basic industrial core competitiveness, and has accumulated certain technological advantages in some fields.
[0003] In the production process of batteries, battery liquid injection is a key process. When injecting liquid into existing batteries, a relatively large positive pressure often needs to be applied to inject the liquid into the battery casing. In order to quickly inject the electrolyte into the battery casing, a relatively large positive pressure is required, which requires a very high strength for the battery casing. However, currently, in order to meet the requirements of battery usage, the battery needs to be lightened in weight to be used. In order to reduce the weight, a thinner casing is used, resulting in low pressure resistance. Therefore, during liquid injection, an external tooling is required to fix the battery to prevent the battery from deforming. Ensuring that the battery does not deform during liquid injection is one of the key technologies in the lithium-ion battery production liquid injection process. Square power lithium-ion battery liquid injection machines generally use fixed blocks on both sides to position the battery, without an adjustment mechanism. If the distance between the baffles is large, the battery is likely to bulge during liquid injection; if the gap between the baffles is small, it is difficult to take out the battery, and the battery surface is easily scratched when taking it out. Content of the Utility Model
[0004] The utility model provides a battery liquid injection clamping linkage device, which can realize the simultaneous liquid injection of multiple batteries, ensure the uniform force on each battery, prevent deformation, and improve the production efficiency and reliability of single-cell batteries.
[0005] The utility model adopts the following technical solutions: a battery liquid injection clamping linkage device, which includes a plurality of lead screws. After the plurality of lead screws are horizontally placed, they enclose a frame structure with a polygonal cross-section. A bottom plate is horizontally installed at the bottom of the polygonal frame structure. A left support plate and a right support plate are respectively connected to both sides of the plurality of lead screws. A driving cylinder is installed on the left support plate, and the driving cylinder is in transmission connection with the head of the lead screw. A battery placement area is formed between the left support plate and the right support plate during battery liquid injection. A plurality of battery pressing plates are vertically placed in the battery placement area. The battery placement area is partitioned into a plurality of single-battery clamping areas by the battery pressing plates. The main bodies of the plurality of lead screws horizontally pass through the four sides of the battery pressing plates to connect the battery pressing plates in series. The lead screws are directly in transmission connection with the battery pressing plates through a linkage device. The driving cylinder drives the head of the lead screw to rotate, and the battery pressing plates move linearly as the lead screws rotate. A battery front baffle is vertically installed at the upper part of the front side of each single-battery clamping area, a battery rear baffle is vertically inserted into the rear side of each single-battery clamping area, and a battery side baffle is arranged on the side of each single-battery clamping area.
[0006] Furthermore, the utility model includes four lead screws. After the four lead screws are horizontally and evenly placed, they enclose a frame structure with a rectangular cross-section. The battery pressing plates are set to be rectangular. The four lead screws respectively horizontally pass through the four right angles of the rectangular battery pressing plates to connect the battery pressing plates in series. The four lead screws are directly in transmission connection with the pressing plates through a linkage device.
[0007] Furthermore, linear bearings are provided at the joints of the head and tail of each lead screw with the left support plate and the right support plate respectively. The head and tail of each lead screw are installed in the linear bearings. The linkage device is set as an adjusting nut. Each lead screw is in transmission connection with the battery pressing plate through the adjusting nut. The lead screw and the adjusting nut are in rotational connection. The adjusting nut is installed on the battery pressing plate. When the lead screw drives the adjusting nut to rotate, the adjusting nut will drive and ensure that the battery pressing plate forms a linear motion according to the lead of the corresponding specification with the rotation angle of the lead screw.
[0008] Furthermore, guide posts and guide pins are respectively provided at the edges on both sides of each battery rear baffle. Guide grooves are provided at the edges of each battery side baffle, pin holes are provided on each battery pressing plate, the guide grooves of each battery side baffle correspond to the guide posts of the correspondingly inserted battery rear baffle, and the pin holes of each battery pressing plate correspond to the guide pins of the correspondingly inserted battery rear baffle. When the battery pressing plate moves and presses the battery, and the battery rear baffle needs to be inserted into the rear part of the single battery clamping area, the guide posts of the battery rear baffle are inserted into the guide grooves of the battery side baffle, and the guide pins of the battery rear baffle are inserted into the pin holes, thus avoiding the phenomenon that the battery rear baffle moves due to pressure.
[0009] Furthermore, a stop nut is installed at the tail of the lead screw, and the stop nut is sleeved on the tail end of the lead screw.
[0010] The utility model has the following beneficial effects: After adopting the above technical solutions, a battery placement area is formed between the left support plate and the right support plate of the utility model during battery liquid injection. A number of battery pressing plates are vertically placed in the battery placement area. The battery placement area is partitioned into several single battery clamping areas by the battery pressing plates. A number of lead screw bodies horizontally pass through the peripheries of the battery pressing plates to connect the battery pressing plates in series. The lead screw is directly in a transmission relationship with the battery pressing plate through a linkage device. The driving cylinder drives the head of the lead screw to rotate, and the battery pressing plate linearly moves as the lead screw rotates. A battery front baffle is vertically installed at the upper part of the front side of each single battery clamping area, a battery rear baffle is vertically inserted into the rear side of each single battery clamping area, and a battery side baffle is provided on the side of each single battery clamping area. In this way, under the action of the driving cylinder, the battery pressing plate can clamp multiple batteries through the linkage of the battery pressing plates, so that multiple batteries can be injected with liquid simultaneously, and the force on each battery can be ensured to be uniform without deformation, improving the production efficiency and reliability of single-cell batteries. The head and tail of the lead screw of the utility model are installed in linear bearings, which can ensure the horizontal linear movement of the pressing plate. The edge of the battery rear baffle of the utility model is processed with guide posts, which are inserted into the guide grooves at the edge of the battery side baffle. On the other side, there are guide pins, which are inserted into the pin holes of the pressing plate after the pressing plate presses the battery, ensuring that the battery rear baffle will not move due to pressure. The utility model is provided with a stop nut, which ensures that the liquid injection device will not cause the battery to burst due to excessive pressure, playing a safety protection role. Description of the Drawings
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the utility model patent or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the utility model patent. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0012] Figure 1This is a schematic diagram of the front structure of the rear baffle without a battery inserted when the present utility model is in use.
[0013] Figure 2 This is a schematic diagram of the rear structure of the rear baffle with a battery inserted when the present utility model is in use.
[0014] Figure 3 This is a three-dimensional structure diagram of the rear baffle with a battery inserted when the present utility model is in use. Detailed implementation manners
[0015] The following elaborates on the preferred embodiments of the patent of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the patent of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the patent of the present utility model more clearly defined.
[0016] In Figure 1 , Figure 2 and Figure 3In this case, the present utility model provides a battery liquid injection clamping linkage device, which includes a number of lead screws 1. After the number of lead screws 1 are placed horizontally, they enclose a frame structure with a polygonal cross-section. A bottom plate 2 is horizontally installed at the bottom of the polygonal frame structure. On both sides of the number of lead screws 1, a left support plate 6 and a right support plate 13 are respectively connected. In this embodiment, the battery liquid injection clamping linkage device includes four lead screws 1. After the four lead screws 1 are horizontally and evenly placed, they enclose a frame structure with a rectangular cross-section. A bottom plate 2 is horizontally installed at the bottom of the rectangular frame structure. On both sides of the four lead screws 1, a left support plate 6 and a right support plate 13 are respectively connected. A driving cylinder 4 is installed on the left support plate 6, and there is a transmission connection between the driving cylinder 4 and the head of the lead screw 1. A battery placement area is formed between the left support plate 6 and the right support plate 13. A number of battery pressing plates 5 are vertically placed in the battery placement area. The battery placement area is partitioned into a number of single battery clamping areas 14 by the battery pressing plates 5. The main bodies of the number of lead screws 1 horizontally pass through the four sides of the battery pressing plates 5 to connect the battery pressing plates 5 in series. In this embodiment, six battery pressing plates 5 are vertically placed in the battery placement area. The battery placement area is partitioned into six single battery clamping areas 14 by the battery pressing plates 5. The battery pressing plates 5 are set as regular polygons. The four lead screws 1 respectively horizontally pass through the four right angles of the square battery pressing plates 5 to connect the battery pressing plates 5 in series. The four lead screws 1 directly form a transmission relationship with the pressing plates through a linkage device. There is a U-shaped operation opening 18 behind the square voltage pressing plate. The lead screw 1 directly forms a transmission relationship with the battery pressing plate 5 through a linkage device. The driving cylinder 4 drives the head of the lead screw 1 to rotate, and the battery pressing plate 5 moves linearly as the lead screw 1 rotates. A battery front baffle 10 is vertically installed at the upper part of the front side of each single battery clamping area 14. A battery rear baffle 3 is vertically inserted into the rear side of each single battery clamping area 14. A battery side baffle 11 is provided on the side of each single battery clamping area 14. In this embodiment, linear bearings 7 are provided at the connection points between the head and the tail of each lead screw 1 and the left support plate 6 and the right support plate 13 respectively. The head and the tail of each lead screw 1 are installed in the linear bearings 7. The linkage device is set as an adjusting nut 8. Each lead screw 1 is in transmission connection with the battery pressing plate 5 through the adjusting nut 8. There is a rotational connection between the lead screw 1 and the adjusting nut 8. The adjusting nut 8 is installed on the battery pressing plate 5. When the lead screw 1 drives the adjusting nut 8 to rotate, the adjusting nut 8 will drive and ensure that the battery pressing plate 5 forms a linear motion according to the lead of the corresponding specification with the rotation angle of the lead screw 1. On the edges of both sides of each battery rear baffle 3, a guide post 15 and a guide pin 16 are respectively provided. A guide groove 19 is provided on the edge of each battery side baffle 11. A pin hole 17 is provided on each battery pressing plate 5. The guide groove 19 of each battery side baffle 11 corresponds to the guide post 15 of the corresponding inserted battery rear baffle 3. The pin hole 17 of each battery pressing plate 5 corresponds to the guide pin 16 of the corresponding inserted battery rear baffle 3. When the battery pressing plate 5 moves and presses the battery, when the battery rear baffle 3 needs to be inserted into the rear part of the single battery clamping area 14,The guide column 15 of the battery rear baffle 3 is inserted into the guide groove 19 of the battery side baffle 11, and the guide pin 16 of the battery rear baffle 3 is inserted into the pin hole 17, so as to avoid the battery rear baffle 3 from moving due to pressure. The tail of the screw rod 1 is equipped with a stop nut 9, which is sleeved on the tail end of the screw rod 1.
[0017] The use process of the utility model is as follows: when the utility model needs to inject liquid into the battery 12, the six batteries 12 are respectively placed in the six single battery clamping areas 14, and then placed on the bottom plate 2 at the bottom of the square frame structure, the front of each battery 12 is aligned with each corresponding battery front baffle 10, and the side of each battery 12 is aligned with each corresponding battery side baffle 11, and then the battery rear baffle 3 is inserted. When the battery rear baffle 3 needs to be inserted into the rear of the single battery clamping area 14, the guide column 15 of the battery rear baffle 3 is inserted into the guide groove 19 of the battery side baffle 11, and the guide pin 16 of the battery rear baffle 3 is inserted into the pin hole 17, so as to avoid the phenomenon that the battery rear baffle 3 moves due to pressure. After the battery 12 is placed, the driving cylinder 4 is started. The driving cylinder 4 drives the battery pressure plate 5 to move in a straight line after the driving screw 1 rotates in the forward direction, thereby clamping the battery 12 placed in the single battery clamping area 14, and then tightens the stop nut 9, so that the injection machine can be started for injection. After the injection is completed, the stop nut 9 is loosened first, and then the screw rod 1 is driven to rotate in the opposite direction to release the battery pressure plate 5 and release the battery 12, thus completing one injection.
[0018] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of this utility model patent. Therefore, the protection scope of this utility model patent should be based on the protection scope defined in the claims.
Claims
1. A battery liquid injection clamping linkage device, characterized in that It includes a number of lead screws (1). After the number of lead screws (1) are placed horizontally, they enclose a frame structure with a polygonal cross-section. A bottom plate (2) is horizontally installed at the bottom of the polygonal frame structure. On both sides of the number of lead screws (1), a left support plate (6) and a right support plate (13) are respectively connected. A driving cylinder (4) is installed on the left support plate (6). There is a transmission connection between the driving cylinder (4) and the head of the lead screw (1). A battery placement area is formed between the left support plate (6) and the right support plate (13) during battery liquid injection. A number of battery pressing plates (5) are vertically placed in the battery placement area. The battery placement area is partitioned into a number of single battery clamping areas (14) by the battery pressing plates (5). The main bodies of the number of lead screws (1) horizontally pass through the four sides of the battery pressing plates (5) to connect the battery pressing plates (5) in series. The lead screw (1) directly forms a transmission relationship with the battery pressing plate (5) through a linkage device. The driving cylinder (4) drives the head of the lead screw (1) to rotate, and the battery pressing plate (5) moves linearly as the lead screw (1) rotates. At the upper part of the front side of each single battery clamping area (14), a battery front baffle (10) is vertically installed. A battery rear baffle (3) is vertically inserted into the rear side of each single battery clamping area (14). A battery side baffle (11) is provided on the side of each battery clamping area (14).
2. The battery liquid injection clamping linkage device according to claim 1, characterized in that It includes four lead screws (1). After the four lead screws (1) are horizontally and evenly placed, they enclose a frame structure with a square cross-section. The battery pressing plate (5) is set to be rectangular. The four lead screws (1) respectively horizontally pass through the four right angles of the rectangular battery pressing plate (5) to connect the battery pressing plates (5) in series. The four lead screws (1) directly form a transmission relationship with the pressing plate through a linkage device.
3. The battery liquid injection clamping linkage device according to claim 1 or 2, characterized in that At the connection parts of the head and the tail of each lead screw (1) with the left support plate (6) and the right support plate (13) respectively, linear bearings (7) are provided. The head and the tail of each lead screw (1) are installed in the linear bearings (7). The linkage device is set to be an adjusting nut (8). Each lead screw (1) is in transmission connection with the battery pressing plate (5) through the adjusting nut (8). There is a rotational connection between the lead screw (1) and the adjusting nut (8). The adjusting nut (8) is installed on the battery pressing plate (5). When the lead screw (1) drives the adjusting nut (8) to rotate, the adjusting nut (8) will drive and ensure that the battery pressing plate (5) forms a linear motion according to the lead of the corresponding specification along with the rotation angle of the lead screw (1).
4. The battery liquid injection clamping linkage device according to claim 1, characterized in that Guide posts (15) and guide pins (16) are respectively provided at the edges on both sides of each battery rear baffle (3). A guide groove (19) is provided at the edge of each battery side baffle (11). A pin hole (17) is provided on each battery pressing plate (5). The guide groove (19) of each battery side baffle (11) corresponds to the guide post (15) of the corresponding inserted battery rear baffle (3). The pin hole (17) of each battery pressing plate (5) corresponds to the guide pin (16) of the corresponding inserted battery rear baffle (3). When the battery pressing plate (5) moves to press the battery, and the battery rear baffle (3) needs to be inserted into the rear part of the single battery clamping area (14), the guide post (15) of the battery rear baffle (3) is inserted into the guide groove (19) of the battery side baffle (11), and the guide pin (16) of the battery rear baffle (3) is inserted into the pin hole (17), thereby avoiding the phenomenon that the battery rear baffle (3) moves due to pressure.
5. The battery liquid injection clamping linkage device according to claim 1, wherein A stop nut (9) is installed at the tail of the described lead screw (1), and the stop nut (9) is sleeved on the tail end of the lead screw (1).