Post-treatment device for formation gas production of battery for energy storage

Abstract

The utility model discloses a post-processing device for formation gas production of an energy storage battery, and belongs to the technical field of batteries. The battery formation gas production post-processing device comprises a fixing assembly and a gas path assembly, the fixing assembly is used for fixing a battery, and the gas path assembly is connected with a liquid injection hole of the battery; the gas circuit assembly comprises a catalysis part, a storage part and a gas extraction part which are sequentially connected through a pipeline; wherein the catalytic part is filled with a catalyst carrier along the gas flowing channel. According to the post-processing device for the gas generated in the battery formation, the gas generated during the battery formation can be timely exhausted from the liquid injection hole, so that the influence on the battery performance due to the volume expansion and the impedance increase of the battery is avoided. And meanwhile, toxic and harmful gases generated during battery formation are converted into CO2 and H2O, so that the emission of harmful gases is reduced, and the green production requirement is met.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a post-processing device for the formation of gas from an energy storage battery. Technical Background

[0002] During the first charge of a lithium-ion battery, the negative electrode surface undergoes a crucial change—the formation of a solid electrolyte interphase (SEI) film. This stage, known as the formation stage, is not only a necessary process for SEI film formation but also involves the generation of specific byproducts: a certain amount of gas is released from the battery. The continuous accumulation of these gases can trigger multiple risks, leading to abnormal battery expansion, a significant increase in internal impedance, and ultimately irreversible performance degradation. Specifically, the gases generated during the formation stage have a complex composition, mainly including O2, CO2, CO, C2H4, C3H6, and H2. If these gases are released directly into the environment without treatment, they will not only pose a direct threat to human health but also have long-term negative impacts on the ecological environment.

[0003] Currently, the mainstream formation process in the lithium-ion battery industry is open-cell formation: a liquid injection hole is pre-drilled at the top of the battery, relying on the pressure difference between the inside and outside of the battery to drive gas out. However, this traditional process has significant limitations: it is highly dependent on the environment, requiring strict control of the temperature, humidity, and cleanliness of the production workshop to prevent external contaminants from entering the battery; the venting efficiency is low, and due to the limited pressure difference driving capability, some gas may remain inside the battery, creating safety hazards and accelerating performance degradation; and the environmental risks are prominent, as the direct emission of unpurified gas violates the concept of green manufacturing and makes it difficult to meet increasingly stringent environmental regulations.

[0004] Therefore, developing a highly efficient, safe, and environmentally friendly post-treatment device for the gas generated during lithium-ion battery formation has become a critical technical challenge that the industry urgently needs to address. This device must achieve efficient gas capture, purification, and harmless emission, while ensuring the stability and consistency of the battery formation process, providing a sustainable solution for the large-scale production of lithium-ion batteries. Utility Model Content

[0005] To address the problems in the existing technology, this utility model proposes a post-processing device for the gas generated during the formation of energy storage batteries. This device promptly removes the gas generated during battery formation, preventing the battery from expanding in volume and increasing its impedance. At the same time, it converts toxic and harmful gases into CO2 and H2O.

[0006] To achieve the above technical objectives, this utility model provides a post-processing device for the formation of gas from an energy storage battery, including a fixing component and a gas path component. The fixing component is used to fix the battery, and the gas path component is connected to the battery's liquid injection port. The gas path component includes a catalytic component, a storage component, and a gas extraction component connected in sequence through pipelines. The catalytic component is filled with a catalyst carrier along the gas flow channel.

[0007] As a further embodiment, the catalytic component includes a stainless steel shell, an inner liner, and a temperature controller. The inner surface of the stainless steel shell is attached to the outer surface of the inner liner, and the interior of the inner liner is filled with a catalyst carrier.

[0008] As a further embodiment, the fixing component includes:

[0009] Support plates are respectively disposed on both sides of the battery in a first direction;

[0010] A slide rail is provided at both ends of the support plate, allowing the support plate to slide along the second direction of the battery;

[0011] A fixing plate is provided across the upper part of two support plates. The fixing plate is connected to the support plates by fasteners, which include either bolt connections or snap-fit ​​connections.

[0012] The base plate, on which the battery is disposed, and the slide rail is mounted on the base plate.

[0013] As a further embodiment, the device also includes a sealing assembly, the sealing assembly comprising:

[0014] A sealing ring is provided, and the battery's electrolyte filling hole is connected to the sealing ring.

[0015] The pressure plate has a through hole, the sealing ring is connected to one side of the through hole, and the other side of the through hole is connected to the pipeline of the air circuit assembly.

[0016] A retainer is provided at the lower part of the pressure plate, and the retainer is used to connect with the top cover of the battery.

[0017] As a further option, a pressure gauge and a pressure control valve are installed on the pipeline between the battery and the catalytic component.

[0018] As a further embodiment, the catalytic component is fixed to the pipeline by a detachable connection, including any one of bolt connection, snap connection or elastic sealing connection;

[0019] And / or, the storage component is detachably connected to the pipeline, including any one of bolted connection, snap-fit ​​connection or elastic sealing connection.

[0020] As a further option, a one-way valve is provided at the inlet of the storage component.

[0021] As a further option, the air extraction component is either a vacuum pump or an air extraction pump.

[0022] As a further option, the inner liner can be either an expansion pad or a wire mesh pad.

[0023] As a further option, the temperature controller is either a thermocouple temperature controller or a thermistor temperature controller.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] (1) The post-processing device for the formation of gas in the energy storage battery of this utility model can remove the gas generated during the formation of the battery from the injection hole in time, so as to avoid the battery volume expansion and the increase of impedance, which would affect the battery performance.

[0026] (2) The post-processing device for the formation of energy storage battery of this utility model converts the toxic and harmful gases generated during battery formation into CO2 and H2O, reducing the emission of harmful gases and meeting the requirements of green production. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of a post-processing device for the formation of gas from an energy storage battery according to the present invention.

[0029] Figure 2 This is a partial structural diagram of the battery in a post-processing device of this utility model;

[0030] Figure 3 This is a partial structural diagram of a catalytic component of this utility model.

[0031] The above figures include the following reference numerals:

[0032] 1-Catalyst component, 11-Catalyst carrier, 12-Stainless steel shell, 13-Inner liner, 14-Temperature controller, 2-Storage component, 3-Exhaust component, 41-Support plate, 42-Slide rail, 43-Fixing plate, 44-Base plate, 51-Sealing ring, 52-Pressure plate, 53-Fixing device, 6-Pressure gauge, 7-Pressure control valve, 8-Check valve. Detailed Implementation

[0033] For ease of understanding, the present invention will be described more fully below, and embodiments of the present invention will be given. However, it should be understood that these embodiments are merely for more detailed explanation and should not be construed as limiting the present invention in any way, i.e., they are not intended to limit the scope of protection of the present invention.

[0034] The following are descriptions of terms or words, and unless otherwise defined, all techniques and terms used herein have the meanings commonly understood by one of ordinary skill in the art to which this invention pertains.

[0035] In the description of this utility model, it should be noted that the terms "upper part", "inner part", "outer part", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] The present invention discloses a post-processing device for the formation of gas from an energy storage battery, comprising a fixing component and a gas path component. The fixing component is used to fix the battery, and the gas path component is connected to the battery's liquid injection port. The gas path component includes a catalytic component 1, a storage component 2, and a gas extraction component 3 connected in sequence through pipelines. The catalytic component 1 is filled with a catalyst carrier 11 along the gas flow channel.

[0037] The core of this invention lies in the design of a post-processing device for gas generation during battery formation. Its structure consists of two main modules: a fixing component and a gas path component. The fixing component ensures the battery is stably fixed during the gas generation process, preventing loosening of the injection port connection or battery damage. The gas path component adopts a modular design, with a catalytic component 1, a storage component 2, and a gas extraction component 3 connected sequentially via pipelines to form a collaborative "catalysis-storage-gas extraction" workflow, achieving safe conversion and storage of the generated gas. Specifically, the catalytic component 1 is introduced into the gas path component, and a catalyst carrier 11 is filled along the gas flow channel, directly converting toxic and harmful gases (such as CO, C2H4, C3H6, etc.) generated during battery formation into harmless substances (CO2 and H2O).

[0038] This invention achieves safe, efficient, and environmentally friendly treatment of gas generated during battery formation through integrated catalytic processing, modular gas path design, and targeted application of the catalyst carrier 11. It not only solves the safety hazards and emission pollution problems of traditional post-treatment equipment, but also provides technical support for the greening of battery production and resource recycling, demonstrating significant industry application value.

[0039] In the post-gas treatment device of battery formation, the catalyst support 11 is not only a support for the active components, but also undertakes the key mechanical structural function. The catalyst support 11 filled along the gas flow channel in the catalytic component 1 is a support loaded with catalyst. As some optional parameters, the support is cordierite ceramic support, and the precious metal catalyst is PB-VOC precious metal particle catalyst from Anhui Huanxuan Materials Technology Co., Ltd. This precious metal catalyst uses spherical alumina as support and precious metal Pd-Pt as active components, and is used for the catalytic combustion of toxic and harmful gases (such as CO, C2H4, C3H6, etc.) generated during the battery formation process.

[0040] It should be noted that the pipeline in the post-processing device for the formation of gas from energy storage batteries of this utility model is a tubular channel for the entire gas path.

[0041] As a further embodiment, the catalytic component 1 includes a stainless steel shell 12, an inner liner 13, and a temperature controller 14. The inner surface of the stainless steel shell 12 is attached to the outer surface of the inner liner 13, and the inner liner 13 is filled with a catalyst carrier 11.

[0042] The stainless steel housing 12 serves as the external support structure for the catalytic component 1, providing a corrosion-resistant and high-temperature-resistant sealed environment to protect the internal components from external contamination or physical damage. As optional parameters, 304 or 316L stainless steel is selected to balance strength and corrosion resistance. The thickness of the stainless steel housing 12 is designed according to the operating pressure and temperature range to ensure safety.

[0043] The inner surface of the stainless steel outer shell 12 is bonded to the outer surface of the inner liner 13 primarily for sealing, heat preservation, and fixing the catalyst carrier 11. As some optional parameters, the inner liner 13 can be either an expansion gasket or a wire mesh gasket.

[0044] The catalytic component 1 also includes a temperature controller 14 for precisely controlling the internal temperature of the catalytic component 1, optimizing catalyst activity, and ensuring reaction efficiency. The type and installation location of the temperature controller are not limited, as long as it serves to control the internal temperature of the catalytic component 1. As optional parameters, the temperature controller 14 can be either a thermocouple temperature controller or a thermistor temperature controller, preferably a thermocouple temperature controller, with a thermocouple wound around the perimeter of the stainless steel housing 12.

[0045] As a further embodiment, the fixing component includes:

[0046] Support plates 41 are respectively disposed on both sides of the battery in a first direction;

[0047] The slide rail 42 is disposed at both ends of the support plate 41, so that the support plate 41 can slide along the second direction of the battery;

[0048] A fixing plate 43 is horizontally disposed on the upper part of two support plates 41. The fixing plate 43 is connected to the support plates 41 by fasteners, which include either bolt connection or snap-fit ​​connection.

[0049] The base plate 52, the battery is disposed on the base plate 52, and the slide rail 42 is mounted on the base plate 52.

[0050] The support plate 41 serves as the main support structure for the battery, ensuring its stability during fixing and preventing shaking or displacement. The support plates 41 are respectively positioned on both sides of the battery in a first direction (e.g., along its length), increasing the contact area to distribute pressure and prevent excessive localized stress that could lead to battery deformation. As a further optional parameter, the support plates 41 are made of stainless steel.

[0051] Slide rails 42 are disposed at both ends of support plate 41, allowing support plate 41 to slide along the second direction of the battery (e.g., the width direction of the battery) to accommodate batteries of different sizes. As some optional parameters, at least one slide rail 42 is fixed to one support plate 41; a slider that cooperates with the slide rail 42 is fixed to another support plate 41, allowing the two support plates 41 to slide along the direction of slide rail 42 to adjust the distance. The slide rail 42 adopts a linear guide rail structure.

[0052] A fixing plate 43 is positioned across the upper part of the two support plates 41, and the battery is securely fixed to the support plates 41 by fasteners to prevent loosening when the filling hole is connected. The connection between the fixing plate 43 and the support plates 41 can be either bolted or snap-fit, taking into account both quick assembly and disassembly and stability.

[0053] The base plate 52 and the battery are stacked one on top of the other. The base plate 52 is closely attached to the lower surface of the battery casing, serving to support and fix the battery.

[0054] As a further embodiment, the post-processing device also includes a sealing assembly, the sealing assembly comprising:

[0055] The sealing ring 51 is connected to the electrolyte injection hole of the battery;

[0056] Pressure plate 52, the pressure plate 52 has a through hole, the sealing ring 51 is connected to one side of the through hole, and the other side of the through hole is connected to the pipeline of the air circuit assembly;

[0057] Fixture 53 is provided at the lower part of the pressure plate 52, and the fixture 53 is used to connect with the top cover of the battery.

[0058] By adding a sealing ring 51, a pressure plate 52, and a retainer 53 in a coordinated design, the sealing assembly achieves a highly reliable seal for the connection between the battery injection hole and the pipeline of the catalytic component 1.

[0059] The sealing ring 51 ensures the seal between the battery injection hole and the catalytic component 1 pipeline, preventing gas leakage or the entry of external contaminants. As some optional parameters, the sealing ring 51 is a rubber sealing ring, and the tolerance between the inner diameter of the sealing ring 51 and the diameter of the injection hole is controlled within ±0.1mm to ensure a tight fit.

[0060] The pressure plate 52 is used to fix the position of the pipeline and the battery filling hole to prevent the connection from becoming loose due to vibration or pressure fluctuations. As some optional parameters, the pressure plate 52 is provided with a hole of the same size as the filling hole to connect the pipeline to the battery filling hole; the shape of the pressure plate 52 is not limited, but as some preferred options, the pressure plate 52 is rectangular.

[0061] The retainer 53 can reduce the contact area between the pressure plate 52 and the battery top cover. As some optional parameters, the retainer is a suction cup. The number of suction cups is not limited. A suction cup is placed at each of the four corners of the rectangular pressure plate 52.

[0062] As a further embodiment, a pressure gauge 6 and a pressure control valve 7 are installed on the pipeline between the battery and the catalytic component 1. With the direction of gas flow from the battery to the gas path assembly as a reference, the pressure gauge 6 is located upstream of the pressure control valve 7, that is, the gas first passes through the pressure gauge 6 and then flows through the pressure control valve 7.

[0063] During battery formation, the amount of gas produced changes dynamically from low to high. To ensure the gas enters the gas path components (catalytic unit 1, storage unit 2) efficiently and safely, the pipeline pressure needs to be monitored in real time by the pressure gauge 6, and the pressure control valve 7 needs to be dynamically adjusted to achieve staged pressure control.

[0064] Initial stage (small gas production): Maintain a pressure difference of -30 kPa between the pipeline and the inside of the battery to ensure stable suction of trace amounts of gas.

[0065] Later stage (high gas production): Adjust the pressure difference between the pipeline and the inside of the battery to -10kPa to prevent excessive pressure from causing seal failure or gas leakage.

[0066] As a further embodiment, the catalytic component 1 is fixed to the pipeline via a detachable connection, including any one of bolt connection, snap-fit ​​connection, or elastic sealing connection. Such detachable connection methods are well known to those skilled in the art and can be easily implemented; therefore, their detailed structure will not be described in detail here. As several optional detachable connection embodiments, a short externally threaded pipe is provided on the outer shell side of the stainless steel housing of the catalytic component 1, and a flange with internal threads is provided on the pipeline side, thereby enabling the complete disassembly and replacement of the catalytic component 1.

[0067] The catalyst in the catalytic unit 1 for battery formation gas production processing needs to be replaced periodically to maintain gas production processing efficiency. The catalytic unit 1 is fixed to the pipeline via a detachable connection, allowing for quick assembly and disassembly while ensuring sealing. As a further preferred embodiment, the catalytic unit 1 is connected to the pipeline via bolts.

[0068] As a further option, the storage component 2 is detachably connected to the pipeline, including any one of bolt connection, snap connection or elastic sealing connection.

[0069] When the gas generated during the battery formation process is treated by the catalytic component 1, the treated gas is collected in the storage component 2. After the battery formation is completed, the gas in the storage component 2 needs to be further processed. Therefore, the storage component 2 and the pipeline are detachably connected. As a further preferred embodiment, the storage component 2 and the pipeline are connected by bolts.

[0070] As a further solution, a one-way valve 8 is provided at the inlet of the storage component 2. When the battery formation begins, the suction component 3 is opened simultaneously and the one-way valve 8 is opened. This operation creates a negative pressure environment inside the storage component 2 and the pipeline connected to the suction component 3, thereby enabling the gas treated by the catalyst component 1 to be smoothly drawn in and stored in the storage component 2.

[0071] As a further option, the air extraction component 3 is either a vacuum pump or an air extraction pump.

[0072] The operation process of the post-processing device for the formation of gas in energy storage batteries of this utility model is as follows: After the battery is fixed by the fixing component, the pipeline is placed into the battery's injection hole. The sealing ring 51 seals the connection between the pipeline and the injection hole, and the position of the pipeline and the injection hole is fixed by the through hole of the pressure plate 52. When the battery formation begins, gas begins to be generated inside the battery, increasing its internal pressure. The gas extraction component 3 in the gas circuit assembly is activated and the one-way valve 8 is opened. The pressure value displayed on the pressure gauge 6 is observed. Since the gas production is small at the beginning of the battery formation, the pressure control valve 7 is adjusted to control the gas production of the battery. The pressure difference inside the pipeline is -30 kPa. After the battery has been formed for a period of time, the amount of gas produced by the battery increases. The pressure control valve 7 is adjusted to control the pressure difference between the battery and the pipeline to -10 kPa. When the gas produced by the formation reaches the catalytic component 1, it flows through the catalyst carrier 11 filled in the catalytic component 1 and converts the toxic and harmful gases (CO, C2H4, C3H6) produced by the battery formation into CO2 and H2O. The gas enters the gas storage component 2 through the one-way valve 8. When the battery formation is completed, the gas extraction component 3 is stopped, the storage component 2 is removed, and the gas is centrally processed.

[0073] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0074] Example 1

[0075] A post-processing device for the gas generated during the formation of lithium batteries for energy storage, such as... Figure 1 and Figure 3 As shown, the system includes a fixing assembly and a gas path assembly. The fixing assembly is used to fix the battery, and the gas path assembly is connected to the battery's liquid injection port. The gas path assembly includes a catalytic component 1, a gas storage tank, and a vacuum pump connected in sequence via pipelines. The catalytic component 1 is filled with a catalyst support 11 along the gas flow channel. The catalyst support 11 is a cordierite ceramic support, and the precious metal catalyst is the PB-VOC precious metal particle catalyst from Anhui Huanxuan Materials Technology Co., Ltd. This precious metal catalyst uses spherical alumina as a support and precious metals Pd-Pt as the active component. The catalyst support 11 has a wire mesh pad on its exterior, and the outer surface of the wire mesh pad is attached to the inner surface of a cylindrical stainless steel shell 12. A thermocouple is wound around the outer side of the stainless steel shell 12. A pressure gauge 6 and a pressure control valve 7 are sequentially installed on the pipeline between the battery and the catalytic component 1.

[0076] Example 2

[0077] Based on the post-processing device for the gas generation from the formation of lithium batteries for energy storage shown in Example 1, such as Figure 1 and Figure 2 As shown, the battery is placed on the base plate 52. Support plates 41 are provided on both sides of the battery's length direction. The length of the support plates 41 is greater than the length of the battery. One side of the support plate 41 is fixed to the base plate 52, and slide rails 42 are provided at both ends of the other support plate 41, allowing the support plate 41 to slide along the width direction of the battery. The slide rails 42 are mounted on the base plate 52. A fixing plate 43 is horizontally positioned across the upper part of the two support plates 41 and is fixed to the support plates 41 by bolts. The catalytic component 1 is connected to the pipeline by bolts; the gas storage tank is also connected to the pipeline by bolts, and a one-way valve 8 is installed at the inlet of the gas storage tank.

[0078] Example 3

[0079] Based on the post-processing device for the gas generation from the formation of lithium batteries for energy storage shown in Example 1, such as Figure 1 and Figure 2As shown, it also includes a sealing assembly, which includes a rubber sealing ring, a pressure plate, and suction cups. The battery's liquid injection hole is connected to the rubber sealing ring. The middle position of the pressure plate 52 is a 6mm diameter through hole. The rubber sealing ring is connected to one side of the through hole, and the other side of the through hole is connected to the pipeline of the gas circuit assembly. A suction cup is placed at each of the four corners of the pressure plate 52, and the suction cups are connected to the top cover of the battery.

[0080] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions, and variations to the above embodiments within the scope of the present invention. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A post-treatment device for gas evolution during formation of an energy storage battery, characterized in that, It includes a fixing component and a gas path component. The fixing component is used to fix the battery, and the gas path component is connected to the liquid injection hole of the battery. The gas path component includes a catalytic component (1), a storage component (2) and a gas extraction component (3) connected in sequence through pipelines. The catalytic component (1) is filled with a catalyst carrier (11) along the gas flow channel.

2. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, The catalytic component (1) includes a stainless steel shell (12), an inner liner (13), and a temperature controller (14). The inner surface of the stainless steel shell (12) is attached to the outer surface of the inner liner (13), and the inner liner (13) is filled with a catalyst carrier (11).

3. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, The fixing component includes: Support plates (41) are respectively disposed on both sides of the battery in the first direction; A slide rail (42) is provided at both ends of a support plate (41) so that the support plate (41) can slide along the second direction of the battery; A fixing plate (43) is disposed across the upper part of two support plates (41). The fixing plate (43) is connected to the support plates (41) by fasteners, the fasteners including any one of bolt connection or snap connection. The base plate (44) is on which the battery is disposed, and the slide rail (42) is mounted on the base plate (44).

4. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, The post-processing device further includes a sealing assembly, the sealing assembly comprising: A sealing ring (51) is connected to the battery's liquid injection hole; Pressure plate (52), the pressure plate (52) has a through hole, the sealing ring (51) is connected to one side of the through hole, and the other side of the through hole is connected to the pipeline of the air circuit assembly; Fixture (53), the lower part of the pressure plate (52) is provided with a fixture (53), the fixture (53) is used to connect with the top cover of the battery.

5. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, A pressure gauge (6) and a pressure control valve (7) are installed on the pipeline between the battery and the catalytic component (1).

6. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, The catalyst component (1) is fixed to the pipeline by a detachable connection, including any one of bolt connection, snap connection or elastic sealing connection; And / or, the storage component (2) is detachably connected to the pipeline, including any one of bolted connection, snap-fit ​​connection or elastic sealing connection.

7. The post-processing device for the formation of gas from an energy storage battery according to claim 1, characterized in that, The inlet of the storage component (2) is provided with a one-way valve (8).

8. The post-treatment device for gas evolution during formation of energy storage batteries according to claim 1, characterized in that, The air extraction component (3) is either a vacuum pump or an air extraction pump.

9. The post-treatment device for gas evolution during formation of an energy storage battery according to claim 2, characterized in that, The inner liner (13) is either an expansion pad or a wire mesh pad.

10. The post-treatment device for gas evolution during formation of an energy storage battery according to claim 2, characterized in that, The temperature controller (14) is either a thermocouple temperature controller or a thermistor temperature controller.

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