A kind of battery cell breathing and static mechanism

Abstract

The utility model discloses a battery cell breathing and static mechanism, including an upper fixed plate, on which a guide rod cylinder is installed. The guide rod cylinder is connected to a guide rod connector, which is installed on a pressing assembly to drive the pressing assembly to move toward or away from the upper fixed plate. The pressing assembly is installed with a plurality of solenoid valves, and corresponding solenoid valves are connected with pressure blocks. The pressing assembly includes a pressure plate, on which a guide column is fixed. The upper fixed plate is installed with a guide sleeve, and the guide column passes through the guide sleeve and is connected to a guide column connecting block. The beneficial effects of the utility model are: greatly improving the production efficiency of the battery; producing batteries of different specifications without replacing accessories, saving costs and speeding up the pace of battery production; adopting a breathing and static method, avoiding gas reactions and leakage inside the battery, and effectively improving the performance and reliability of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a battery core breathing and static placement mechanism. Background Art

[0002] In lithium battery production, injecting electrolyte into steel shell batteries is a crucial step. The injection of electrolyte can promote the full infiltration of positive and negative electrodes to ensure stable and long-lasting battery performance. Over time, the electrolyte will gradually reach a state of equilibrium with the electrode, a process called the static process. During the static process, the composition of the electrolyte will interact with the material of the electrode, further improving the battery performance and ensuring the stability of the battery. Adjusting and using a better static method can further improve the performance and cycle life of the battery.

[0003] In the current battery production, the automation and integration of the battery injection mechanism and the static mechanism are not high. Although they can meet the general battery injection and static functions, they also have the following disadvantages: 1. It can only inject liquid for one or two batteries of similar specifications, which is difficult to meet the flexible and diverse battery production needs; in order to produce batteries of various specifications, frequent shutdown adjustments are required, which reduces the overall efficiency and capacity utilization of the production line. 2. Switching batteries of different specifications will increase the cost of manual operation and maintenance, and increase the risk of product quality problems caused by manual errors. 3. By configuring a static mechanism for static placement, this will take up additional space; some static mechanisms will even put forward higher requirements on the battery itself. 4. The static method generally adopts rotation, tilting, etc., which can easily lead to insufficient electrolyte infiltration, gas reaction and leakage. Utility Model Content

[0004] 1. Problems to be solved

[0005] The technical problem to be solved by the utility model is to provide a battery core breathing static mechanism in view of the current status of the prior art.

[0006] (II) Technical solution

[0007] The utility model is implemented through the following technical scheme: The utility model proposes a battery cell breathing static mechanism, including an upper fixed plate, on which a guide rod cylinder is installed. The guide rod cylinder is connected to a guide rod connector, which is installed on a downward pressure assembly to drive the downward pressure assembly to move in a direction close to or away from the upper fixed plate. The downward pressure assembly is installed with a plurality of solenoid valves, and the solenoid valves are connected with pressure blocks accordingly. The downward pressure assembly includes a pressure plate, on which a guide column is fixed. The upper fixed plate is installed with a guide sleeve, and the guide column passes through the guide sleeve and is connected to the guide column connecting block.

[0008] By adopting the above technical solution, the cylinder, guide sleeve, guide column and guide column connecting block cooperate with each other, so that the pressing assembly can move smoothly and accurately according to the preset trajectory, so as to improve the accuracy and stability of the device. The solenoid valve on the pressing assembly is connected to the corresponding pressing block, and is connected to the pressure regulating device through the air pipe, pneumatic control element, etc., so that the pressure control and regulation in the solenoid valve-pressing block system can be realized. At this time, the pneumatic control system is a solenoid valve-pressing block system. When the pressing block of the utility model is connected to the liquid injection cup in the battery production, the liquid injection cup is also connected to the battery to be injected. At this time, a sealed space similar to a cavity is independently formed inside the battery. Through the cooperation of the pneumatic control element, the pressure regulating device and the pneumatic control system, the electrolyte is pressurized and injected during the injection. After the injection, the pneumatic control system interval control switching system is normal pressure condition or positive pressure condition, forming a working mode similar to human breathing, removing the gas inside the battery, allowing the electrolyte to fully infiltrate the battery cell, filling every dead corner inside the battery cell, so as to improve the injection efficiency and performance stability, and achieve a better static effect. At the same time, the installation of multiple solenoid valves and pressure blocks can support the breathing and resting of multiple batteries at the same time, greatly improving the production efficiency of the battery.

[0009] Furthermore, the upper fixing plate is also equipped with a limiting mechanism, which is connected with the guide column connecting block. The limiting mechanism includes a pillar, and the top of the pillar is made of silicone material. A buffer is arranged on the upper fixing plate, and the buffer is a hydraulic buffer.

[0010] By adopting the above technical solution, the movement of the guide column connection block is limited, thereby limiting the movement range of the guide column, thereby ensuring the normal operation and safety of the battery cell breathing and static mechanism. The oil pressure buffer can adjust the movement speed of the guide column, reduce the impact force and vibration of the battery cell breathing and static mechanism, which helps to protect the equipment, extend the service life of components, and improve the working efficiency of the guide column.

[0011] Furthermore, the upper fixed plate is equipped with a total air intake solenoid valve and a solenoid valve group, and is provided with a gas processing element. The lower pressure assembly is equipped with a diverter.

[0012] By adopting the above technical scheme, the gas processing element is connected to the main air intake solenoid valve, the main air intake solenoid valve is connected to the solenoid valve group, the solenoid valve group is connected to the diverter, and the diverter is connected to the solenoid valve on the down-pressure assembly; the elements of the pneumatic control system that cooperate with the solenoid valve and the pressure block are supplemented, the function of gas processing is added, and the pneumatic control system is made more reasonable, that is, the air pressure adjustment in the entire system can be achieved by simply connecting a few pressure control and regulating devices.

[0013] Furthermore, a spring is arranged in the middle of the pressing block, and a sealing ring is installed on the pressing block.

[0014] By adopting the above technical solution, the pressure block and the matching device form a closed space that is inaccessible to external air and impurities, thereby ensuring the stability of the pneumatic control system. At the same time, the pressure block is provided with a spring, which can absorb part of the impact force and vibration, and play a role in buffering and shock absorption.

[0015] (III) Beneficial effects

[0016] 1. To solve the problem that the existing injection mechanism can only inject liquid into one or two batteries of similar specifications, and requires frequent shutdown adjustments to produce batteries of various specifications. The utility model connects the injection cup in battery production through a pneumatic control system, and then connects the battery to be injected, thereby forming an independent injection space; it breaks through the limitation that the production line needs to be equipped with injection cavities of corresponding specifications for batteries of different specifications. It eliminates the step of changing the model, saves the cost of purchasing supporting equipment, avoids product quality problems caused by operator misoperation, and improves the overall efficiency and capacity utilization of battery production.

[0017] 2. The existing breathing and static mechanism needs to occupy a certain space and needs to add transmission parts to the battery, which will increase the difficulty of battery design and the cost of battery design and production. The utility model uses a pneumatic control system to perform liquid injection and breathing and static operations on the battery. Not only can the breathing and static process be completed quickly without adding parts, but it can also effectively avoid gas reactions and leakage that may be generated inside the battery, thereby improving the battery life to a certain extent. Through highly integrated and automated design, the production cost of the equipment is reduced, the space and labor costs occupied by the equipment are saved, and the production rhythm is accelerated; the matching structure of multiple pairs of solenoid valves and pressure blocks can operate multiple batteries at the same time, greatly improving the production efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a left side structural schematic diagram of a battery cell breathing stationary mechanism described in the utility model;

[0020] Figure 2 It is a front structural schematic diagram of a battery cell breathing stationary mechanism described in the utility model;

[0021] Figure 3 It is a right structural schematic diagram of a battery cell breathing stationary mechanism described in the utility model;

[0022] Figure 4 It is a partially enlarged schematic diagram of the spring of the utility model.

[0023] The reference numerals are as follows:

[0024] 1. Upper fixed plate; 2. Guide rod cylinder; 3. Guide rod connector; 4. Down-pressing assembly; 5. Solenoid valve; 6. Pressure block; 7. Pressure plate; 8. Guide sleeve; 9. Guide column connector; 10. Main air intake solenoid valve; 11. Solenoid valve group; 12. Gas processing element; 13 Limiting mechanism; 14. Pillar; 15. Oil pressure buffer; 16. Spring; 17. Sealing ring; 18. Diverter; 19. Guide column. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 The utility model provides a technical solution: a battery cell breathing static mechanism, including an upper fixed plate 1, on which a guide rod cylinder 2 is installed. The guide rod cylinder 2 is connected to a guide rod connector 3, and the guide rod connector 3 is installed on a down-pressing assembly 4 to drive the down-pressing assembly 4 to move toward or away from the upper fixed plate 1. The down-pressing assembly 4 is installed with a plurality of solenoid valves 5, and the solenoid valves 5 are correspondingly connected with a pressure block 6. The down-pressing assembly 4 includes a pressure plate 7, on which a guide column 19 is fixed. The upper fixed plate 1 is installed with a guide sleeve 8, and the guide column 19 passes through the guide sleeve 8 and is connected to the guide column connecting block 9.

[0027] By adopting the above technical solution, the guide rod cylinder 2, the guide sleeve 8, the guide column 19 and the guide column connecting block 9 cooperate with each other, so that the pressing assembly 4 can move smoothly and accurately according to the preset trajectory, which has the effect of improving the accuracy and stability of the device. The solenoid valve 5 on the pressing assembly 4 is connected to the corresponding pressing block 6, and is connected to the equipment for adjusting the pressure in the system, such as a vacuum pump and a pneumatic pump, through an air pipe, a pneumatic control element, etc., so that the pressure control and regulation in the solenoid valve 5-pressing block 6 system can be realized. When the pressing block 6 of the utility model is connected to the injection cup in the battery production, the injection cup is also connected to the battery to be injected. At this time, a sealed space similar to a cavity is independently formed inside the battery, and the electrolyte is pressurized and injected through the pneumatic control element and the pressure regulating device. After the injection, the pneumatic control system controls the switching system to normal pressure conditions or positive pressure conditions, forming a working mode similar to human breathing, removing the gas inside the battery, allowing the electrolyte to fully infiltrate the battery cell, and filling every dead corner inside the battery cell, so as to improve the injection efficiency and performance stability, and achieve better injection and static effects. At the same time, by arranging a plurality of solenoid valves 5 and corresponding pressing blocks 6, it is supported to breathe and rest a plurality of batteries at the same time, which greatly improves the production efficiency of the batteries.

[0028] Preferably, the upper fixing plate 1 is also equipped with a main air intake solenoid valve 10 and a solenoid valve group 11 .

[0029] Preferably, a gas processing element 12 is disposed on the upper fixing plate 1 .

[0030] Preferably, the upper fixing plate 1 is further provided with a limiting mechanism 13 , and the limiting mechanism 13 is cooperatively connected with the guide column connecting block 9 .

[0031] Preferably, the limiting mechanism 13 includes a support column 14 , and the top end of the support column 14 is made of silicone material.

[0032] Preferably, an oil pressure buffer 15 is provided on the upper fixing plate 1 .

[0033] Preferably, a spring 16 is provided in the middle of the pressing block 6 .

[0034] Preferably, the pressing block 6 is provided with a sealing ring 17 .

[0035] Preferably, the pressing assembly 4 is equipped with a flow diverter 18 .

[0036] The above technical solution realizes the process of liquid injection and breathing static through the following steps. Use an air pipe to connect the vacuum pump or air pump to the main air intake solenoid valve 10, use an air pipe to connect the gas processing element 12 to the main air intake solenoid valve 10, use an air pipe to connect the main air intake solenoid valve 10 to the solenoid valve group 11, use an air pipe to connect the solenoid valve group 11 to the diverter 18, and use an air pipe to connect the diverter 18 to the solenoid valve 5 of the pressing assembly 4; then use the guide rod cylinder 2 and the guide column 19 to press the pressing plate 7 down until the pressure block 6 is sealed with the liquid injection cup in the battery production, and the liquid injection cup is connected to the battery to be injected. Then the pneumatic control system introduces positive pressure gas to inject the electrolyte into the battery to be injected in the fixture. After the electrolyte injection is completed, the pneumatic control system continuously switches the pressure conditions in the system, positive pressure conditions or normal pressure conditions, to remove the air in the battery, and allow the electrolyte to fully infiltrate the battery cell to quickly complete the static process.

[0037] The design concept of the utility model: Compared with the existing mechanical equipment, the utility model optimizes the design of the breathing static mechanism. The static pressure block 6 is connected to the vacuum pump and the air pump through the ventilation pipe. The gas is first passed to completely press the electrolyte remaining in the injection cup into the battery, and then the vacuum pump is used to directly evacuate the battery, and then the battery is subjected to breathing static treatment by closing the vacuum control valve. The breathing static treatment can improve the injection efficiency and the stability of the battery performance. The structural design is as follows: the fixed plate of the mechanism design plays a supporting role, and the cylinder and the guide column 19 guide sleeve are installed on the fixed plate to provide power and stability for the static pressure block 6. When the cylinder acts on the static pressure block 6 to seal and press the injection cup, the breathing static solenoid valve controls the positive pressure to pass, and the electrolyte remaining in the injection cup is pressed into the battery cell, and then the battery valve is controlled to control the vacuum to complete the battery static, which is similar to the effect of human breathing to remove the gas inside the battery, so that the electrolyte can fully infiltrate the battery cell, and improve the injection efficiency and performance stability. Simply put, the advantages of this design are: 1. Simple structure, reducing manual maintenance costs and time. 2. High production efficiency, capable of keeping a large number of batteries stationary at the same time. 3. Effectively avoid gas reaction and leakage that may occur inside the battery, and improve battery performance.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery cell breathing static mechanism, characterized in that: It includes an upper fixed plate, on which a guide rod cylinder is installed; the guide rod cylinder is connected to a guide rod connector, and the guide rod connector is installed on a lower pressure assembly to drive the lower pressure assembly to move toward or away from the upper fixed plate; the lower pressure assembly is installed with multiple solenoid valves, and the solenoid valves are correspondingly connected with pressure blocks; the lower pressure assembly includes a pressure plate, on which a guide column is fixed; the upper fixed plate is installed with a guide sleeve, and the guide column passes through the guide sleeve and is connected to the guide column connecting block.

2. A battery cell breathing static mechanism according to claim 1, characterized in that: The upper fixing plate is also equipped with a main air intake solenoid valve and a solenoid valve group.

3. A battery cell breathing static mechanism according to claim 1, characterized in that: A gas processing element is arranged on the upper fixed plate.

4. A battery cell breathing static mechanism according to claim 1, characterized in that: The upper fixing plate is also provided with a limiting mechanism, and the limiting mechanism is cooperatively connected with the guide post connecting block.

5. A battery cell breathing static mechanism according to claim 4, characterized in that: The limiting mechanism comprises a support column, and the top end of the support column is made of silicone material.

6. A battery cell breathing static mechanism according to claim 1, characterized in that: A buffer is arranged on the upper fixing plate.

7. A battery cell breathing stationary mechanism according to claim 6, characterized in that: The buffer is an oil pressure buffer.

8. The battery cell breathing static mechanism according to claim 1, characterized in that: A spring is arranged in the middle of the pressing block.

9. The battery cell breathing static mechanism according to claim 1, characterized in that: The pressing block is provided with a sealing ring.

10. The battery cell breathing static mechanism according to claim 1, characterized in that: The pressing down assembly is provided with a flow divider.

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