Soft package battery gas collection device

Abstract

The utility model provides a soft package battery gas collection device which comprises a base, the top of the base is a first inclined plane, and one side of the base is a second inclined plane; a through hole is formed in the middle of the first clamping plate; the second clamping plate is movably mounted on the second inclined surface, and the distance is adjustable; the sealing head is matched with the through hole in structure and movably installed in the through hole, and the height of the sealing head is relatively smaller than the length of the through hole. The puncture needle and the sealing head are connected in a pluggable mode. The clamping plates are installed on the top and the side face of the base respectively, gas collection can be directly conducted on batteries without gas bags on the top, the batteries with the gas bags can be installed respectively, and then gas collection is conducted on the top. The first clamping plate is also provided with a through hole matched with the sealing head, so that the battery can be extruded and exhausted, and the butt joint of the sealing head and the puncture needle is not influenced; in addition, the puncture needle can be limited through the sealing head in the inserting process, the inserting depth can be effectively guaranteed, and then safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery detection, in particular to a soft package battery gas collection device. BACKGROUND

[0002] With the development of the times, various scenes in life have batteries, and the safety of batteries is increasingly valued. The phenomenon of gas production and package expansion often occurs in the use process of soft package batteries as commonly used commercial batteries, which poses challenges to the safety and performance of the batteries. Analyzing the battery gas production is conducive to exploring the failure factors of the batteries in the use process, improving the battery design scheme, and improving the safety and reliability of the batteries.

[0003] The phenomenon of gas production is common in the formation process of common soft package batteries, which is a common normal phenomenon when SEI film is generated in the battery core. However, abnormal gas production often occurs in battery production and testing, which is affected by various factors such as battery system and process. Tracking and analyzing the gas production in the battery formation and other processes and testing processes is conducive to analyzing the causes of battery gas production and improving battery performance.

[0004] At present, the common gas collection method for soft package batteries needs to add a GSP device during the packaging stage of the soft package battery. When unexpected gas production occurs in the testing and actual use of the soft package battery and gas production analysis is needed, the soft package battery has been packaged and the GSP device has not been added. There is a risk of short circuit when the battery is pierced for gas collection. At present, there is no good automatic gas collection scheme, and manual gas collection poses a safety risk to the operator. In addition, the air tightness between the piercing hole and the piercing needle during the gas collection process is difficult to guarantee, which leads to gas leakage, affecting gas collection and making it difficult to guarantee the accuracy of the analysis results. Therefore, the above problems need to be solved. SUMMARY

[0005] In view of the above defects or deficiencies in the prior art, it is desirable to provide a soft package battery gas collection device.

[0006] The application provides a soft package battery gas collection device, which comprises

[0007] The top of the base is a relatively gentle first inclined surface, and one side is a relatively steep second inclined surface;

[0008] The first clamping plate is liftably installed on the top of the base and is provided with a through hole in the middle;

[0009] The through hole is in the shape of a trumpet mouth, and the diameter of one end close to the base is relatively large;

[0010] The second clamping plate is movably installed on the second inclined surface and has an adjustable spacing with the second inclined surface;

[0011] a sealing head, which is matched with the through hole, movably mounted in the through hole, and has a height relatively smaller than a length of the through hole;

[0012] a puncture needle, which is connected with the sealing head in a plug-in manner, and used for puncturing the battery to take gas.

[0013] Further,

[0014] The top of the base is provided with a slide rail corresponding to the first clamping plate;

[0015] The slide rail is located at each side of the base, and two ends thereof are connected with the base through supporting blocks;

[0016] The first clamping plate is connected with the slide rail through matched sliding blocks.

[0017] Further,

[0018] The first clamping plate is provided with threaded rods at four corners thereof respectively;

[0019] One end of the threaded rod is perpendicularly mounted on the first clamping plate, one end of the threaded rod penetrates through the sliding block, and a matched first adjusting nut is mounted on the threaded rod, which is used for adjusting the distance between the first clamping plate and the first inclined surface.

[0020] Further,

[0021] The threaded rod is further sleeved with a spring and a second adjusting nut;

[0022] The spring is located between the second adjusting nut and the sliding block, and used for providing a continuous pressing force to the first clamping plate;

[0023] The second adjusting nut is threadedly connected with the threaded rod, and used for adjusting the driving force of the spring.

[0024] Further,

[0025] One side of the sliding block is further provided with an adjusting screw;

[0026] The adjusting screw is threadedly connected with the sliding block, and used for locking and fixing with the slide rail.

[0027] Further,

[0028] The second clamping plate is connected with the base through a bolt;

[0029] The bolt penetrates through the second clamping plate and is rotationally connected with the second clamping plate, and is threadedly connected with the base;

[0030] The base has matching threaded holes at the four corners of the second clamping plate, corresponding to the bolts.

[0031] Furthermore,

[0032] The puncture needle is also equipped with a first control valve, and is connected to a tubing through the first control valve;

[0033] An air bag is connected to the end of the tubing away from the puncture needle for collecting battery gas.

[0034] Furthermore,

[0035] The hose and the air bag are connected by a T-junction;

[0036] The tee is also connected to a vacuum pump for venting the hose and air bag.

[0037] A second control valve is also provided between the vacuum pump and the three-way valve to control the connection and disconnection between the vacuum pump and the hose.

[0038] Furthermore,

[0039] An air chamber is also provided in the middle of the hose;

[0040] The air chamber is located between the puncture needle and the three-way valve, and is used to collect battery fluid and prevent electrolyte from entering the air bag.

[0041] The advantages and positive effects of this application are:

[0042] This technical solution utilizes clamps installed on the top and sides of the base. This allows for direct gas extraction from the top of batteries without air bags, as well as separate installation of batteries with air bags for top-level gas extraction. Simultaneously, the first clamp has a through hole matching the sealing head, enabling gas extraction by squeezing the battery without affecting the connection between the sealing head and the puncture needle. The sealing head also limits the insertion depth of the puncture needle, ensuring that the needle does not shift relative to the sealing head during gas extraction, thus guaranteeing safety and accuracy of the extracted gas components. A second adjusting nut is installed between the spring and the first clamp, allowing adjustment of the spring's pressure on the first clamp, and consequently, the pressure of the clamp on the pouch battery, maintaining a suitable gas pressure inside the pouch battery. Attached Figure Description

[0043] Fig. 1 This is a schematic diagram of the structure of the gas collection device for a soft-pack battery provided in the embodiments of this application;

[0044] Fig. 2 This is a schematic diagram of the gas collection assembly of the gas collection device for a soft-pack battery provided in an embodiment of this application;

[0045] Fig. 3 The structure diagram of the puncture needle assembly of the soft package battery gas collection device provided in the embodiment of the present application is shown in the structure diagram.

[0046] The text annotations in the diagram are as follows: 100-base; 110-slideway; 120-slidabie block; 121-adjusting screw; 200-first clamping plate; 210-through hole; 220-threaded rod; 221-first adjusting nut; 230-spring; 300-second clamping plate; 310-bolt; 400-sealing head; 500-puncture needle; 510-first control valve; 520-hose; 521-gas chamber; 530-three-way joint. DETAILED DESCRIPTION

[0047] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0048] Please refer to Figs. 1-3 The embodiment provides a soft package battery gas collection device, which comprises a base 100, the top of the base 100 is a relatively gentle first inclined surface, and one side is a relatively steep second inclined surface; a first clamping plate 200, which is liftable and installed on the top of the base 100 and is provided with a through hole 210 in the middle; the through hole 210 is in the shape of a bell mouth, and the diameter of the end close to the base 100 is relatively large; a second clamping plate 300, which is movably installed on the second inclined surface and has an adjustable spacing with the second inclined surface; a sealing head 400, which has a structure matching the through hole 210, is movably installed in the through hole 210, and has a height relatively smaller than the length of the through hole 210; and a puncture needle 500, which is in plug-in connection between the sealing head 400 and is used for puncturing the battery to collect gas.

[0049] In the embodiment, the first clamping plate 200 is liftable and installed on the top of the base 100 and is relatively liftable with the first inclined surface, and is used for extruding and exhausting the battery; at the same time, the first clamping plate 200 is further provided with the through hole 210, which is used for installing the sealing head 400; the sealing head 400 is installed on the battery in a close manner and can effectively prevent the battery gas from leaking.

[0050] In the embodiment, the puncture needle 500 is plug-in installed on the sealing head 400 through the through hole 210, so as to puncture the battery and make the battery gas discharged into the collection device through the puncture needle 500; at the same time, the plug-in depth between the puncture needle 500 and the sealing head 400 is controllable, and thus the puncture depth of the puncture needle 500 in the battery is also controllable, so as to ensure the safety of the battery gas collection.

[0051] In a preferred embodiment, the top of the base 100 is provided with slide rails 110 corresponding to the first clamping plate 200; the slide rails 110 are respectively located at the two sides of the base 100 and connected to the base 100 by support blocks at both ends; the first clamping plate 200 is connected to the slide rails 110 by matching sliding blocks 120.

[0052] In this embodiment, the two ends of the slide rails 110 are respectively connected to the base 100 by support blocks, forming a suspended mounting structure, so that the first clamping plate 200 connected thereto can slide relative to the base 100 and also can be lifted relative to the base 100.

[0053] In a preferred embodiment, the first clamping plate 200 is provided with threaded rods 220 at the four corners; one end of the threaded rod 220 is perpendicularly installed on the first clamping plate 200, the other end penetrates through the sliding block 120 and is provided with a matching first adjusting nut 221 for adjusting the distance between the first clamping plate 200 and the first inclined surface.

[0054] In this embodiment, the first clamping plate 200 is connected to the sliding block 120 by the threaded rods 220 at the four corners; the threaded rods 220 are perpendicularly installed on the first clamping plate 200 and fixedly connected to the first clamping plate 200; the sliding block 120 is provided with matching through holes corresponding to the threaded rods 220, so that the threaded rods 220 can penetrate through and slide relative to the sliding block 120.

[0055] In a preferred embodiment, the threaded rod 220 is further sleeved with a spring 230 and a second adjusting nut; the spring 230 is located between the second adjusting nut and the sliding block 120 and used to provide a continuous downward pressure to the first clamping plate 200; the second adjusting nut is threadedly connected to the threaded rod 220 and used to adjust the driving force of the spring 230.

[0056] In this embodiment, the spring 230 is sleeved on the threaded rod 220 and abuts against the second adjusting nut and the sliding block 120 at both ends; when the first clamping plate 200 is driven to rise by the first adjusting nut 221, the spring 230 will be compressed; when the first adjusting nut 221 is reversely driven, the spring 230 will drive the first clamping plate 200 to be pressed downward.

[0057] In this embodiment, the second adjusting nut is threadedly connected to the threaded rod 220, and the compression amount of the spring 230 can be effectively adjusted by rotating the second adjusting nut, so as to change the driving force of the spring 230 to the first clamping plate 200, and further realize the adjustable pressing force of the first clamping plate 200 to the battery.

[0058] In a preferred embodiment, one side of the sliding block 120 is further provided with an adjusting screw 121; the adjusting screw 121 is threadedly connected to the sliding block 120 and used to lock and fix with the slide rail 110.

[0059] In the embodiment, the outer side of the sliding block 120 is provided with a matching threaded hole corresponding to the adjusting screw 121, and the threaded hole is a through hole, so that the adjusting screw 121 can abut against the sliding rail 110, and then the sliding block 120 is relatively fixed with the sliding rail 110.

[0060] In a preferred embodiment, the second clamping plate 300 is connected with the base 100 through a bolt 310; the bolt 310 penetrates the second clamping plate 300 and is rotationally connected with the second clamping plate 300 and is threadedly connected with the base 100; the base 100 is provided with a matching threaded hole corresponding to the bolt 310 at each corner of the second clamping plate 300.

[0061] In the embodiment, the four corners of the second clamping plate 300 are connected with the base 100 through the bolts 310, so that the battery body with the air bag can be clamped and fixed, and then the air bag can be placed between the base 100 and the first clamping plate 200.

[0062] In a preferred embodiment, the puncture needle 500 is further provided with a first control valve 510 and is connected with a hose 520 through the first control valve 510; one end of the hose 520 away from the puncture needle 500 is connected with an air bag for collecting battery gas.

[0063] In the embodiment, the first control valve 510 is installed between the puncture needle 500 and the hose 520, which can effectively control the on-off between the puncture needle 500 and the hose 520.

[0064] In a preferred embodiment, the hose 520 and the air bag are connected through a tee joint 530; the tee joint 530 is further connected with a vacuum pump for exhausting the hose 520 and the air bag; a second control valve is further provided between the vacuum pump and the tee joint 530 for controlling the on-off between the vacuum pump and the hose 520.

[0065] In the embodiment, the tee joint is connected with the hose 520, the vacuum pump and the air bag; before collecting battery gas, the first control valve 510 is closed and the second control valve is opened, so that the gas in the hose 520 and the air bag can be exhausted through the vacuum pump; then the second control valve is closed, so that the hose 520 and the air bag can maintain a vacuum state; after the puncture needle 500 pierces the battery, the first control valve 510 is opened, so that the battery gas can be collected into the air bag; during the collection process, the down pressure of the first clamping plate 200 can be effectively adjusted by rotating the second adjusting nut, so that the battery gas can be smoothly exhausted and collected.

[0066] In a preferred embodiment, the middle of the hose 520 is also provided with an air chamber 521; the air chamber 521 is located between the puncture needle 500 and the tee joint 530, for collecting battery liquid and preventing electrolyte from entering the air bag.

[0067] In this embodiment, the air chamber 521 is installed in series on the hose 520, and has a diameter relatively larger than that of the hose 520; when the battery has a phenomenon of leaking liquid, the air chamber 521 can collect the battery liquid, thereby avoiding the battery liquid from entering the air bag.

[0068] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above embodiment descriptions are only used to help understand the method and core idea of the present application. The above descriptions are only preferred embodiments of the present application, and it should be pointed out that, due to the limited expression, there are infinite specific structures, and for ordinary skilled persons in the art, some improvements, decorations or changes can be made without departing from the principles of the present application, and the above technical features can be combined in an appropriate manner; the improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A soft-pack battery gas collecting device characterized by comprising: The utility model provides a soft package battery gas collection device, including The top of base (100) is relatively slow first slope, one side is relatively steep second slope; First clamping plate (200) can be installed in the top of base (100), and the middle is equipped with through hole (210); The through hole (210) is trumpet mouth shape, and the diameter is relatively big near the one end of base (100); Second clamping plate (300) is movably installed on the second slope, and the spacing between second clamping plate (300) and second slope is adjustable; Sealing head (400) is movably installed in the through hole (210), and the height is relatively less than the length of through hole (210); Puncture needle (500) is plug-in connection between sealing head (400), and is used for puncturing the gas of battery.

2. The soft package battery gas collection device according to claim 1, wherein, The top of base (100) is provided with slide rail (110) corresponding to first clamping plate (200); The slide rail (110) is respectively located at both sides of base (100), and both ends are connected with base (100) through support block; The first clamping plate (200) is connected with slide rail (110) through matched sliding block (120).

3. The soft package battery gas collection device according to claim 2, wherein, The four corners of first clamping plate (200) are respectively provided with threaded rod (220); One end of threaded rod (220) is vertically installed on first clamping plate (200), one end penetrates through sliding block (120), and matched first adjusting nut (221) is installed, which is used for adjusting the spacing between first clamping plate (200) and first slope.

4. The soft package battery gas collection device according to claim 3, wherein, Spring (230) and second adjusting nut are further sleeved on threaded rod (220); The spring (230) is located between the second adjusting nut and the sliding block (120), and is used to provide a continuous downward pressure on the first clamping plate (200); The second adjusting nut is threadedly connected with the threaded rod (220), and is used to adjust the driving force of the spring (230).

5. The soft package battery gas collection device according to claim 2, wherein, One side of sliding block (120) is further provided with adjusting screw (121); The adjusting screw (121) is threadedly connected with the sliding block (120), and is used to lock and fix with the slide rail (110).

6. The soft package battery gas collection device according to claim 1, wherein, The second clamping plate (300) is connected with the base (100) through the bolt (310); The bolt (310) penetrates through the second clamping plate (300) and is rotatably connected with the second clamping plate (300), and is threadedly connected with the base (100). The base (100) is provided with a matching threaded hole corresponding to the bolt (310) at each corner of the second clamping plate (300). 7.The soft package battery gas collecting device according to claim 1, characterized in that, The puncture needle (500) is further provided with a first control valve (510), and the first control valve (510) is connected with a hose (520); The end of the hose (520) away from the puncture needle (500) is connected with a gas bag for collecting battery gas. 8.The soft package battery gas collecting device according to claim 7, characterized in that, The hose (520) and the gas bag are connected through a tee joint (530); The tee joint (530) is further connected with a vacuum pump for exhausting the hose (520) and the gas bag; A second control valve is further arranged between the vacuum pump and the tee joint (530) for controlling the on-off of the vacuum pump and the hose (520). 9.The soft package battery gas collecting device according to claim 8, characterized in that, The middle of the hose (520) is further provided with an air chamber (521); The air chamber (521) is located between the puncture needle (500) and the tee joint (530) for collecting battery liquid and preventing electrolyte from entering the gas bag.

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