Soft package multi-nozzle liquid injection device

Abstract

The utility model relates to soft package battery technical field, concretely relates to a kind of soft package multi-nozzle liquid injection device. It includes soft package battery ontology, and soft package battery ontology top end is connected with liquid transmission component, and liquid transmission component top end is connected with electrolyte shunt box, and electrolyte shunt box input end is connected with electrolyte delivery pipe;Liquid transmission component is jointly formed by several groups of supply pipeline, and liquid delivery component is used to deliver electrolyte to soft package battery ontology, and liquid transmission component includes proximal soft from pipe, and proximal soft from pipe one end is connected to electrolyte shunt box output end side wall on.The utility model can carry out liquid injection operation to multiple electric core simultaneously by setting multiple liquid transmission components, significantly improve the production capacity of production line, substantially shorten production cycle;Setting baffle divides electrolyte shunt box inside into multiple small chambers, effectively improves electrolyte distribution uniformity, ensures that electrolyte can be evenly distributed to each output port, to improve battery performance and consistency.

Description

Technical Field

[0001] This utility model relates to the field of soft-pack battery technology, and more specifically, to a soft-pack multi-nozzle liquid injection device. Background Technology

[0002] Soft-pack batteries are a type of lithium battery packaging. They are characterized by using an aluminum-plastic composite film instead of a hard shell to wrap the internal components (such as the positive electrode, negative electrode, separator, and electrolyte). The aluminum-plastic film packaging used in soft-pack batteries can provide a buffer space in the event of a safety issue, avoiding the risk of explosion. Only swelling or rupture will occur. Due to their high energy density and thinness, soft-pack batteries are widely used in 3C products such as mobile phones, portable computers, and cameras. Since soft-pack lithium batteries use a liquid dielectric, liquid filling is very important. Liquid filling involves injecting the liquid dielectric into the positive and negative electrodes to maintain the normal operating state of the lithium battery. Traditionally, electrolyte injection for pouch batteries is performed using a single-tube injection system, where the electrolyte is typically injected from a single point. This can lead to uneven distribution of the electrolyte within the battery, slow injection speed, and long injection time, which limits the improvement of overall production efficiency. Furthermore, single-tube injection equipment is relatively simple in structure, and its installation and disassembly are inconvenient when malfunctions occur, potentially affecting the normal operation of the entire production line. Therefore, we propose a multi-nozzle injection device for pouch batteries. Utility Model Content

[0003] The purpose of this invention is to provide a soft-pack multi-nozzle liquid injection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a soft-pack multi-nozzle liquid injection device, including a soft-pack battery body, a liquid transmission component connected to the top of the soft-pack battery body, an electrolyte distribution box connected to the top of the liquid transmission component, and an electrolyte delivery pipe connected to the input end of the electrolyte distribution box. The liquid transport assembly consists of several sets of supply pipes and is used to transport electrolyte to the pouch battery body.

[0005] As a further improvement to this technical solution, the liquid transfer assembly includes a proximal soft tube, one end of which is connected to the side wall of the output end of the electrolyte distribution box and communicates with its interior, for guiding the electrolyte from the inside of the electrolyte distribution box to each branch.

[0006] As a further improvement to this technical solution, the liquid transfer assembly further includes a rigid conduit, the top end of which is threadedly engaged with the bottom end of a proximal soft conduit. The liquid transfer assembly also includes a distal soft conduit that is threadedly engaged with the bottom end of the rigid conduit. A complete liquid transfer path is formed between the proximal soft conduit, the rigid conduit, and the distal soft conduit.

[0007] As a further improvement to this technical solution, the upper surface of the soft-pack battery body is provided with several battery interfaces, which are connected to the output end of the remote soft tube and communicate with its interior.

[0008] As a further improvement to this technical solution, the electrolyte distribution box is provided with several baffles, which are located between two adjacent proximal soft tubes. The baffles physically divide the liquid flow evenly.

[0009] As a further improvement to this technical solution, the upper surface of the electrolyte distribution box is provided with a number of through holes, and the number of through holes are respectively connected to the area formed between the two partitions. The through holes are located inside the area surrounded by the electrolyte delivery pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In this soft-pack multi-nozzle liquid injection device, multiple sets of liquid transfer components can be set up to inject liquid into multiple cells simultaneously, which significantly improves the production line capacity and greatly shortens the production cycle. The partition plate divides the inside of the electrolyte distribution box into multiple small chambers, which effectively improves the uniformity of electrolyte distribution and ensures that the electrolyte can be evenly distributed to each output port, thereby improving battery performance and consistency. By combining the use of near-end flexible conduit, rigid conduit, and far-end flexible conduit, the liquid flow rate can be effectively controlled and stabilized, ensuring a uniform and stable flow velocity. The combination of flexible and rigid conduit maintains the strength of the pipeline while providing sufficient elasticity to cope with vibration and thermal expansion and contraction during the production process. At the same time, the threaded connection between the near-end flexible conduit, rigid conduit, and far-end flexible conduit makes pipeline connection convenient and quick. If a problem occurs in any part, the damaged part can be quickly disconnected and replaced, greatly shortening the maintenance time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 For the present utility model Figure 3 A schematic diagram of the structure at point A in the middle.

[0012] The meanings of the labels in the diagram are as follows: 100. Soft-pack battery body; 101. Battery interface; 200. Liquid transfer assembly; 201. Distal flexible conduit; 202. Rigid conduit; 203. Proximal flexible conduit; 300, Electrolyte distribution box; 301, Through hole; 302, Baffle plate; 400, Electrolyte delivery pipe. Detailed Implementation

[0013] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] Pouch batteries are a type of lithium battery packaging. They are characterized by using an aluminum-plastic composite film instead of a hard shell to encase the internal components (such as the positive electrode, negative electrode, separator, and electrolyte). The aluminum-plastic film packaging of pouch batteries provides a buffer space in case of safety issues, avoiding the risk of explosion; only bulging or rupture will occur. Due to their high energy density and thinness, pouch batteries are widely used in 3C products such as mobile phones, laptops, and cameras. Since pouch lithium batteries use a liquid electrolyte, liquid filling is crucial. Liquid filling involves injecting the liquid electrolyte into the positive and negative electrodes to maintain the normal operating state of the lithium battery.

[0015] Please see Figures 1-4 As shown, this embodiment provides a multi-nozzle liquid injection device for soft-pack batteries, including a soft-pack battery body 100. Considering that traditional liquid injection for soft-pack batteries generally uses a single-tube injection method, the electrolyte is usually injected from one injection point, which may lead to uneven distribution of the electrolyte inside the battery, and the injection speed is slow and the injection time is long, which limits the improvement of overall production efficiency. Therefore, the following is the specific method: a liquid transfer component 200 is connected to the top of the soft-pack battery body 100, an electrolyte distribution box 300 is connected to the top of the liquid transfer component 200, and an electrolyte delivery pipe 400 is connected to the input end of the electrolyte distribution box 300. The liquid transfer assembly 200 consists of several sets of supply pipes and is used to deliver electrolyte to the pouch cell body 100.

[0016] The improvement in this embodiment is as follows: By setting up multiple sets of liquid transfer components 200, multiple battery cells can be injected with liquid simultaneously, which significantly improves the production line capacity and greatly shortens the production cycle.

[0017] Considering that single-tube injection equipment has a relatively simple structure and is inconvenient to install and disassemble when it malfunctions, which may affect the normal operation of the entire production line, the liquid transfer assembly 200 includes a proximal soft tube 203. One end of the proximal soft tube 203 is connected to the side wall of the output end of the electrolyte distribution box 300 and communicates with its interior. It is used to guide the electrolyte from the inside of the electrolyte distribution box 300 to each branch. The liquid transfer assembly 200 also includes a rigid tube 202. The top end of the rigid tube 202 is threaded with the bottom end of the proximal soft tube 203. The liquid transfer assembly 200 also includes a distal soft tube 201 that is threaded with the bottom end of the rigid tube 202. The proximal soft tube 203, the rigid tube 202 and the distal soft tube 201 form a complete liquid transfer path. By combining the use of the near-end flexible conduit 203, the rigid conduit 202, and the far-end flexible conduit 201, the liquid flow rate can be effectively controlled and stabilized, ensuring a uniform and stable flow velocity. The combination of flexible and rigid conduits maintains the strength of the pipeline while providing sufficient elasticity to cope with vibration and thermal expansion and contraction during the production process. At the same time, the threaded connection between the near-end flexible conduit 203, the rigid conduit 202, and the far-end flexible conduit 201 makes the pipeline connection convenient and quick. If a problem occurs in any part, the damaged part can be quickly disconnected and replaced, greatly shortening the maintenance time.

[0018] Secondly, a number of battery interfaces 101 are provided on the upper surface of the soft-pack battery body 100. The battery interfaces 101 are connected to the output end of the remote soft tube 201 and communicate with its interior. The electrolyte is delivered to the interior of the soft-pack battery body 100 through the output end of the remote soft tube 201 via the battery interfaces 101.

[0019] To improve the uniformity of electrolyte distribution, several baffles 302 are installed inside the electrolyte distribution box 300. The baffles 302 are located between two adjacent soft tubes 203. The baffles 302 physically divide the liquid flow evenly. Several through holes 301 are opened on the upper surface of the electrolyte distribution box 300. The through holes 301 are connected to the area formed between the two baffles 302. The through holes 301 are located inside the area surrounded by the electrolyte delivery pipe 400. The baffles 302 divide the inside of the electrolyte distribution box 300 into multiple small chambers, which effectively improves the uniformity of electrolyte distribution and ensures that the electrolyte can be evenly distributed to each output port, thereby improving battery performance and consistency.

[0020] In practical use, the electrolyte of this utility model's multi-nozzle liquid injection device is delivered through the electrolyte delivery pipe 400 and through the through hole 301 to the inside of the electrolyte distribution box 300. The electrolyte distribution box 300 is divided into multiple small chambers by the partition 302. The electrolyte flows into each small chamber. Then, the electrolyte enters the rigid pipe 202 through the proximal soft pipe 203, and then passes through the distal soft pipe 201, finally reaching the injection point to inject the electrolyte into the soft-pack battery body 100.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A soft-pack multi-nozzle liquid injection device, comprising a soft-pack battery body (100), characterized in that: The top of the soft-pack battery body (100) is connected to a liquid transfer assembly (200), the top of the liquid transfer assembly (200) is connected to an electrolyte distribution box (300), and the input end of the electrolyte distribution box (300) is connected to an electrolyte delivery pipe (400). The liquid transfer assembly (200) is composed of several sets of supply pipes and is used to transport electrolyte to the soft-pack battery body (100). The liquid transfer assembly (200) includes a proximal flexible tube (203), one end of which is connected to the side wall of the output end of the electrolyte distribution box (300) and communicates with its interior, for guiding the electrolyte from the interior of the electrolyte distribution box (300) to each branch; The liquid transfer assembly (200) further includes a rigid conduit (202), the top end of which is threaded into the bottom end of a proximal soft conduit (203). The liquid transfer assembly (200) also includes a distal soft conduit (201) that is threaded into the bottom end of the rigid conduit (202). A complete liquid transfer path is formed between the proximal soft conduit (203), the rigid conduit (202), and the distal soft conduit (201).

2. The soft-pack multi-nozzle liquid injection device according to claim 1, characterized in that: The upper surface of the soft-pack battery body (100) is provided with a plurality of battery interfaces (101), which are connected to the output end of the remote soft tube (201) and communicate with its interior.

3. The soft-pack multi-nozzle liquid injection device according to claim 1, characterized in that: The electrolyte distribution box (300) is provided with a number of partitions (302) inside. The partitions (302) are located between two adjacent proximal soft tubes (203). The partitions (302) physically divide the liquid flow evenly.

4. The soft-pack multi-nozzle liquid injection device according to claim 3, characterized in that: The electrolyte distribution box (300) has several through holes (301) on its upper surface. The several through holes (301) are respectively connected to the area formed between the two partitions (302). The through holes (301) are located inside the area surrounded by the electrolyte delivery pipe (400).

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