A method and system for simply and quickly detecting the internal pressure of a battery cell

Abstract

The present invention belongs to the technical field of battery cell internal pressure detection, and provides a method and system for simply and quickly detecting battery cell internal pressure, the method comprising: obtaining a detection device for detecting battery cell internal pressure and building a battery cell internal pressure detection platform; based on the battery cell internal pressure detection platform, using the detection device to detect the battery cell internal pressure. The present invention has low design cost and simple operation, can effectively detect the internal pressure of the battery cell, effectively supervise the quality of the battery cell, and ensure the quality and safety of the battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell detection, and in particular to a method and system for simply and quickly detecting the internal pressure of a battery cell. Background Art

[0002] At present, the current industry status quo for the detection of internal pressure of battery cells is that it mainly relies on battery cell manufacturers to use professional testing systems for testing. The testing equipment is relatively complex and requires the construction of a powerful testing platform with high investment costs. Before using battery cells, battery module assembly plants rely entirely on the quality control capabilities of the battery cell manufacturers themselves. They are basically unable to detect the internal pressure of the battery cells and cannot confirm whether the incoming battery cells are qualified, resulting in the inability to fully guarantee the quality of the battery cells.

[0003] Therefore, it is necessary to provide a method and system for simply and quickly detecting the internal pressure of a battery cell. Summary of the invention

[0004] The present invention provides a method and system for simply and quickly detecting the internal pressure of a battery cell, which has low design cost and simple operation, can effectively detect the internal pressure of the battery cell, effectively supervise the quality of the battery cell, and ensure the quality of the battery module and the safety of use.

[0005] The present invention provides a method for simply and quickly detecting the internal pressure of a battery cell, comprising:

[0006] Obtain testing equipment for testing the internal pressure of battery cells and build a battery cell internal pressure testing platform;

[0007] Based on the battery cell internal pressure detection platform, the internal pressure of the battery cell is detected using detection equipment.

[0008] Furthermore, a detection device for detecting the internal pressure of the battery cell is obtained, including:

[0009] Obtain a fixed sealing ring, a piercing air release device and a pressure gauge for testing the battery cell; the fixed sealing ring is used to be inserted into the top of the battery cell, and the piercing air release device is used to pierce into the battery cell, and the internal air pressure of the battery cell is introduced into the pressure gauge connected to the piercing air release device.

[0010] Furthermore, a battery cell internal pressure detection platform is built, including:

[0011] A battery cell internal pressure detection platform is built based on the processor, control gripper and network control components; the processor is connected to the control gripper through the network control component.

[0012] Furthermore, based on the battery cell internal pressure detection platform, the battery cell internal pressure is detected using detection equipment, including:

[0013] S1: The processor uses the control gripper to put the fixed sealing ring onto the top of the battery cell according to the set first control command;

[0014] S2: the processor controls the sealing device to inject the sealant into the inner cavity of the fixed sealing ring according to the set second control command, so as to obtain a soft colloid after the sealant is solidified;

[0015] S3: The processor controls the piercing and deflation device to penetrate into the battery cell through the soft colloid according to the set third control command;

[0016] S4: Based on a barometer connected to the air leakage hole inserted into the air leakage device, the internal pressure value of the battery cell is measured and obtained.

[0017] Furthermore, obtaining the soft colloid after the sealant solidifies also includes testing the hardness of the soft colloid, specifically:

[0018] The hardness of the soft colloid after the sealant solidifies is detected by a soft colloid hardness detection device connected to the processor to obtain hardness data. When the hardness data meets the set conditions, a response signal is generated, and a third control command is generated according to the response signal.

[0019] Further, controlling the sealing device to inject the sealant into the inner cavity of the fixed sealing ring also includes: detecting the position of the colloid injected into the fixed sealing ring, specifically including:

[0020] The position of the sealant injected into the internal cavity of the fixed sealing ring is measured by using a position measuring device connected to the processor. When the measurement data reaches a set measurement data threshold, the processor controls the sealing device to stop injecting the sealant.

[0021] Furthermore, the control of the piercing and deflation device, after the soft colloid is pierced into the battery cell, further includes: pre-detecting the pressure inside the battery cell, specifically:

[0022] Using an air pressure sensor connected to a processor to collect pressure data at the position of the air leakage hole inserted into the air leakage device within a set time period;

[0023] The processor establishes a pressure data change data set according to the pressure data;

[0024] Analyze the pressure data change data set, and when the stability of the pressure data change is greater than a set stability threshold, it is determined that the puncture and deflation device has punctured a predetermined depth inside the battery cell;

[0025] The calculation formula of stability is:

[0026]

[0027] in, Represents the stability of the pressure data, It is the average pressure value of the pressure data in multiple sub-periods divided within the set time period; is the total number of sub-periods within the set time period. For the Sub-periods, Representative The pressure value within a sub-period.

[0028] Furthermore, based on the battery cell internal pressure detection platform, the battery cell internal pressure is detected by using a detection device, and the processor control data is optimized based on the trained timing dynamic model for use in the detection process; specifically, the following steps are included:

[0029] Obtain historical process data of battery cell internal pressure detection;

[0030] Generate processor control data based on historical process data;

[0031] Based on the machine learning algorithm, a timing dynamic model is constructed, and the timing dynamic model is used to optimize and adjust the processor control data to generate optimized processor control data;

[0032] The optimized processor control data is used as processor standard control data, and the processor standard control data is used to detect the internal pressure of the battery cell.

[0033] A system for simply and quickly detecting the internal pressure of a battery cell, comprising:

[0034] An acquisition module is used to acquire a detection device for detecting the internal pressure of a battery cell and to build a battery cell internal pressure detection platform;

[0035] The detection module is used to detect the internal pressure of the battery cell using the detection equipment based on the battery cell internal pressure detection platform.

[0036] Furthermore, the detection module includes a unit for fixing the sealing ring, a unit for injecting the sealing glue, a unit for piercing the air release device, and a unit for detecting the internal pressure of the battery cell;

[0037] A fixed sealing ring using unit is used to, based on the processor and according to a set first control command, use a control gripper to put the fixed sealing ring onto the top of the battery cell;

[0038] The sealant injection unit is used to control the sealant device to inject the sealant into the inner cavity of the fixed sealant ring based on the processor according to the set second control command to obtain a soft colloid after the sealant is solidified;

[0039] The piercing and deflation device using unit is used to control the piercing and deflation device to pierce the inside of the battery cell through the soft colloid based on the processor and according to the set third control command;

[0040] The battery cell internal pressure detection unit is used to obtain the internal pressure value of the battery cell based on a barometer connected to the air leakage hole of the puncture leakage device.

[0041] Compared with the prior art, the present invention has the following advantages and beneficial effects: low design cost, simple operation, and can effectively detect the internal pressure of the battery cell, effectively supervise the quality of the battery cell, and ensure the quality of the battery module and the safety of use.

[0042] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0043] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0045] Figure 1 A schematic diagram of a method for quickly and easily detecting the internal pressure of a battery cell;

[0046] Figure 2 A schematic diagram of the composition of a detection device for detecting the internal pressure of a battery cell;

[0047] Figure 3 A schematic diagram of the steps of a method for detecting the internal pressure of a battery cell using a detection device based on a battery cell internal pressure detection platform;

[0048] Figure 4 The figure is a schematic diagram of a system structure for simply and quickly detecting the internal pressure of a battery cell. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0050] The present invention provides a method for quickly and easily detecting the internal pressure of a battery cell. Figure 1 As shown, it includes: obtaining a detection device for detecting the internal pressure of the battery cell and building a battery cell internal pressure detection platform;

[0051] Based on the battery cell internal pressure detection platform, the internal pressure of the battery cell is detected using detection equipment.

[0052] The working principle of the above technical solution is: in order to realize a method for simply and quickly detecting the internal pressure of a battery cell, the present invention obtains a detection device for detecting the internal pressure of a battery cell and builds a battery cell internal pressure detection platform; then based on the battery cell internal pressure detection platform, the internal pressure of the battery cell is detected using the detection device.

[0053] The beneficial effects of the above technical solution are: the solution provided in this embodiment has low design cost and simple operation, and can effectively detect the internal pressure of the battery cell, effectively monitor the quality of the battery cell, and ensure the quality and safety of the battery module.

[0054] In one embodiment, Figure 2 As shown, a detection device for detecting the internal pressure of a battery cell is obtained, including:

[0055] Obtain a fixed sealing ring, a piercing air release device and a pressure gauge for testing the battery cell; the fixed sealing ring is used to be inserted into the top of the battery cell, and the piercing air release device is used to pierce into the battery cell, and the internal air pressure of the battery cell is introduced into the pressure gauge connected to the piercing air release device.

[0056] The working principle of the above technical scheme is: in order to obtain a detection device for detecting the internal pressure of the battery cell, the present invention uses a fixed sealing ring, a piercing air release device and a pressure gauge as detection equipment; the fixed sealing ring is used to be inserted into the top of the battery cell, and the piercing air release device is used to penetrate into the interior of the battery cell, and the internal air pressure of the battery cell is introduced into the pressure gauge connected to the piercing air release device.

[0057] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by obtaining a detection device for detecting the internal pressure of the battery cell, a basis is provided for subsequent detection.

[0058] In one embodiment, a battery cell internal pressure detection platform is constructed, including:

[0059] A battery cell internal pressure detection platform is built based on the processor, control gripper and network control components; the processor is connected to the control gripper through the network control component.

[0060] The working principle of the above technical solution is: in order to build a battery cell internal pressure detection platform, the present invention uses a processor, a control gripper and a network control component to build a battery cell internal pressure detection platform; the processor is connected to the control gripper through the network control component.

[0061] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, a platform for detecting the internal pressure of the battery cell is built to provide a platform and basis for detecting the internal pressure of the battery cell.

[0062] In one embodiment, Figure 3 As shown, based on the battery cell internal pressure detection platform, the battery cell internal pressure is detected using detection equipment, including:

[0063] S1: The processor uses the control gripper to put the fixed sealing ring onto the top of the battery cell according to the set first control command;

[0064] S2: the processor controls the sealing device to inject the sealant into the inner cavity of the fixed sealing ring according to the set second control command, so as to obtain a soft colloid after the sealant is solidified;

[0065] S3: The processor controls the piercing and deflation device to penetrate into the battery cell through the soft colloid according to the set third control command;

[0066] S4: Based on a barometer connected to the air leakage hole inserted into the air leakage device, the internal pressure value of the battery cell is measured and obtained.

[0067] The working principle of the above technical scheme is: in order to realize the detection of the internal pressure of the battery cell by using the detection equipment, the implementation steps of the present invention are: the processor uses the control gripper to put the fixed sealing ring into the top of the battery cell according to the set first control command; the processor controls the sealing equipment to inject the sealant into the internal cavity of the fixed sealing ring according to the set second control command, and obtains the soft colloid after the sealant solidifies; the processor controls the penetration of the air release device according to the set third control command, and penetrates into the interior of the battery cell through the soft colloid; based on the barometer connected to the air release hole of the penetration of the air release device, the internal pressure value of the battery cell is measured and obtained.

[0068] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by using a processor to control the sealing equipment, the gripper and the piercing and venting device, the internal pressure value of the battery cell can be measured using a barometer to improve the measurement accuracy.

[0069] In one embodiment, obtaining the soft colloid after the sealant is solidified also includes testing the hardness of the soft colloid, specifically:

[0070] The hardness of the soft colloid after the sealant solidifies is detected by a soft colloid hardness detection device connected to the processor to obtain hardness data. When the hardness data meets the set conditions, a response signal is generated, and a third control command is generated according to the response signal.

[0071] The working principle of the above technical solution is: in order to obtain the soft colloid after the sealant is solidified, the present invention also detects the hardness of the soft colloid, specifically: using a soft colloid hardness detection device connected to the processor to detect the hardness of the soft colloid after the sealant is solidified, to obtain hardness data, when the hardness data meets the set conditions, a response signal is generated, and according to the response signal, a third control command is generated.

[0072] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, by detecting the hardness of the soft colloid, it is possible to ensure that the hardness data of the soft colloid is obtained, thereby improving the conditions for generating the third control command.

[0073] In one embodiment, controlling the sealing device to inject the sealant into the inner cavity of the fixed sealing ring also includes: detecting the position of the colloid injected into the fixed sealing ring, specifically including:

[0074] The position of the sealant injected into the internal cavity of the fixed sealing ring is measured by using a position measuring device connected to the processor. When the measurement data reaches a set measurement data threshold, the processor controls the sealing device to stop injecting the sealant.

[0075] The working principle of the above technical scheme is: in order to accurately inject the sealant into the internal cavity of the fixed sealing ring, the present invention also includes: detecting the position of the colloid injected into the fixed sealing ring, and using a position measurement device connected to the processor to measure the position of the sealant injected into the internal cavity of the fixed sealing ring within the internal cavity of the fixed sealing ring. When the measurement data reaches the set measurement data threshold, the processor controls the sealing equipment to stop injecting the sealant.

[0076] The beneficial effect of the above technical solution is: by adopting the solution provided by this embodiment, by detecting the position of the colloid injected into the fixed sealing glue, it can be ensured that the sealant is accurately injected into the internal cavity of the fixed sealing glue ring.

[0077] In one embodiment, the control of the piercing and deflation device, after the soft colloid is pierced into the battery cell, further includes: pre-detecting the pressure inside the battery cell, specifically:

[0078] Using an air pressure sensor connected to a processor to collect pressure data at the position of the air leakage hole inserted into the air leakage device within a set time period;

[0079] The processor establishes a pressure data change data set according to the pressure data;

[0080] Analyze the pressure data change data set. When the stability of the pressure data change is greater than the set stability threshold, it is determined that the puncture and deflation device has penetrated into the battery cell to a predetermined depth, and the pressure can be measured using a barometer.

[0081] The calculation formula of stability is:

[0082]

[0083] in, Represents the stability of the pressure data, It is the average pressure value of the pressure data in multiple sub-periods divided within the set time period; is the total number of sub-periods within the set time period. For the Sub-periods, Representative The pressure value within a sub-period.

[0084] The working principle of the above technical solution is as follows: in order to accurately detect the pressure inside the battery cell, the present invention first performs a preliminary detection, specifically: using a pressure sensor connected to a processor to collect pressure data of the air leakage hole position of the puncture air leakage device within a set time period; the processor establishes a pressure data change data set according to the pressure data; then analyzes the pressure data change data set, and when the stability of the pressure data change is greater than the set stability threshold, it is determined that the puncture air leakage device has penetrated the predetermined depth inside the battery cell, and the pressure can be measured using a barometer;

[0085] The calculation formula of stability is:

[0086]

[0087] in, Represents the stability of the pressure data, It is the average pressure value of the pressure data in multiple sub-periods divided within the set time period; is the total number of sub-periods within the set time period. For the Sub-periods, Representative The pressure value within a sub-period.

[0088] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by analyzing the pressure data change data, the pressure inside the battery cell can be pre-detected to ensure that accurate measurement data is obtained using the barometer.

[0089] In one embodiment, based on the battery cell internal pressure detection platform, the battery cell internal pressure is detected by using a detection device, and the processor control data is optimized based on a trained time series dynamic model for use in the detection process; specifically, the following steps are included:

[0090] Obtain historical process data of battery cell internal pressure detection;

[0091] Generate processor control data based on historical process data;

[0092] Based on the machine learning algorithm, a timing dynamic model is constructed, and the timing dynamic model is used to optimize and adjust the processor control data to generate optimized processor control data;

[0093] The optimized processor control data is used as processor standard control data, and the processor standard control data is used to detect the internal pressure of the battery cell.

[0094] The working principle of the above technical solution is: in order to ensure the efficiency and quality of detection, the present invention optimizes the processor control data based on the trained timing dynamic model for use in the detection process; specifically including: obtaining historical process data of battery cell internal pressure detection; generating processor control data based on the historical process data; constructing a timing dynamic model based on a machine learning algorithm, and optimizing and adjusting the processor control data using the timing dynamic model to generate optimized processor control data; using the optimized processor control data as processor standard control data, and using the processor standard control data to detect the battery cell internal pressure.

[0095] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, the efficiency and quality of the detection process can be improved by optimizing the processor control data based on the trained timing dynamic model.

[0096] A simple and fast system for detecting the internal pressure of a battery cell, such as Figure 4 As shown, including:

[0097] An acquisition module is used to acquire a detection device for detecting the internal pressure of a battery cell and to build a battery cell internal pressure detection platform;

[0098] The detection module is used to detect the internal pressure of the battery cell using the detection equipment based on the battery cell internal pressure detection platform.

[0099] The working principle of the above technical solution is: in order to realize a system for simply and quickly detecting the internal pressure of a battery cell, the present invention sets an acquisition module for acquiring a detection device for detecting the internal pressure of the battery cell and building a battery cell internal pressure detection platform; and sets a detection module for detecting the internal pressure of the battery cell using the detection device based on the battery cell internal pressure detection platform.

[0100] The beneficial effects of the above technical solution are: the solution provided in this embodiment has low design cost and simple operation, and can effectively detect the internal pressure of the battery cell, effectively monitor the quality of the battery cell, and ensure the quality and safety of the battery module.

[0101] In one embodiment, the detection module includes a sealing ring fixing unit, a sealing glue injection unit, a puncture and release device unit, and a battery cell internal pressure detection unit;

[0102] A fixed sealing ring using unit is used to, based on the processor and according to a set first control command, use a control gripper to put the fixed sealing ring onto the top of the battery cell;

[0103] The sealant injection unit is used to control the sealant device to inject the sealant into the inner cavity of the fixed sealant ring based on the processor according to the set second control command to obtain a soft colloid after the sealant is solidified;

[0104] The piercing and deflation device using unit is used to control the piercing and deflation device to pierce the inside of the battery cell through the soft colloid based on the processor and according to the set third control command;

[0105] The battery cell internal pressure detection unit is used to obtain the internal pressure value of the battery cell based on a barometer connected to the air leakage hole of the puncture leakage device.

[0106] The working principle of the above technical scheme is: in order to realize the function of the detection module, the present invention is provided with a fixed sealing ring using unit, which is used to, based on the processor, according to the set first control command, use the control gripper to put the fixed sealing ring into the top of the battery cell; a sealant injection unit is provided, which is used to, based on the processor, according to the set second control command, control the sealing equipment to inject the sealant into the internal cavity of the fixed sealing ring to obtain a soft colloid after the sealant is solidified; a piercing and degassing device using unit is provided, which is used to, based on the processor, according to the set third control command, control the piercing and degassing device to pierce the interior of the battery cell through the soft colloid; a battery cell internal pressure detection unit is provided, which is used to obtain the internal pressure value of the battery cell based on a barometer connected to the degassing hole of the piercing and degassing device.

[0107] The beneficial effect of the above technical solution is: by adopting the solution provided in this embodiment, by using a processor to control the sealing equipment, the gripper and the piercing and venting device, the internal pressure value of the battery cell can be measured using a barometer to improve the measurement accuracy.

[0108] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for quickly and easily detecting the internal pressure of a battery cell, characterized in that: include: Obtain testing equipment for testing the internal pressure of battery cells and build a battery cell internal pressure testing platform; Based on the battery cell internal pressure detection platform, the internal pressure of the battery cell is detected using the detection equipment; The processor uses the control gripper to insert the fixed sealing ring into the top of the battery cell according to the set first control command; The processor controls the sealing device to inject the sealant into the inner cavity of the fixed sealing ring according to the set second control command, so as to obtain a soft colloid after the sealant is solidified; The processor controls the piercing and deflation device to penetrate the battery cell through the soft colloid according to the set third control command; wherein, after controlling the piercing and deflation device to penetrate the battery cell through the soft colloid, it also includes: pre-detecting the pressure inside the battery cell, specifically: using the air pressure sensor connected to the processor to collect the pressure data of the deflation hole position of the piercing and deflation device within a set time period; the processor establishes a pressure data change data set according to the pressure data; analyzes the pressure data change data set, and when the stability of the pressure data change is greater than the set stability threshold, it is determined that the piercing and deflation device has penetrated the predetermined depth inside the battery cell; wherein, the calculation formula of the stability is: Where P represents the stability of the pressure data, D is the average pressure value of the pressure data in multiple sub-periods divided within the set time period; t is the total number of sub-periods within the set time period, i is the i-th sub-period, and R i represents the pressure value in the i-th sub-period; The internal pressure value of the battery cell is measured and obtained based on a barometer connected to the air leakage hole of the air leakage device.

2. A method for simply and quickly detecting the internal pressure of a battery cell according to claim 1, characterized in that: Obtain testing equipment for testing the internal pressure of the battery cell, including: Obtain a fixed sealing ring, a piercing air release device and a pressure gauge for testing the battery cell; the fixed sealing ring is used to be inserted into the top of the battery cell, and the piercing air release device is used to pierce into the battery cell, and the internal air pressure of the battery cell is introduced into the pressure gauge connected to the piercing air release device.

3. A method for simply and quickly detecting the internal pressure of a battery cell according to claim 1, characterized in that: Build a battery cell internal pressure detection platform, including: A battery cell internal pressure detection platform is built based on the processor, control gripper and network control components; the processor is connected to the control gripper through the network control component.

4. A method for simply and quickly detecting the internal pressure of a battery cell according to claim 1, characterized in that: Obtaining the soft colloid after the sealant solidifies also includes testing the hardness of the soft colloid, specifically: The hardness of the soft colloid after the sealant solidifies is detected by a soft colloid hardness detection device connected to the processor to obtain hardness data. When the hardness data meets the set conditions, a response signal is generated, and a third control command is generated according to the response signal.

5. The method for simply and quickly detecting the internal pressure of a battery cell according to claim 1, characterized in that: Controlling the sealing device to inject the sealant into the inner cavity of the fixed sealing ring also includes: detecting the position of the colloid injected into the fixed sealing ring, specifically including: The position of the sealant injected into the internal cavity of the fixed sealing ring is measured by using a position measuring device connected to the processor. When the measurement data reaches a set measurement data threshold, the processor controls the sealing device to stop injecting the sealant.

6. A method for simply and quickly detecting the internal pressure of a battery cell according to claim 1, characterized in that: Based on the battery cell internal pressure detection platform, the internal pressure of the battery cell is detected by using the detection equipment, and the processor control data is optimized based on the trained timing dynamic model for use in the detection process; Specifically include: Obtain historical process data of battery cell internal pressure detection; Generate processor control data based on historical process data; Based on the machine learning algorithm, a timing dynamic model is constructed, and the timing dynamic model is used to optimize and adjust the processor control data to generate optimized processor control data; The optimized processor control data is used as processor standard control data, and the processor standard control data is used to detect the internal pressure of the battery cell.

7. A system for simply and quickly detecting the internal pressure of a battery cell, characterized in that: include: An acquisition module is used to acquire a detection device for detecting the internal pressure of a battery cell and to build a battery cell internal pressure detection platform; A detection module is used to detect the internal pressure of the battery cell using a detection device based on the battery cell internal pressure detection platform; wherein the detection module includes a fixed sealing ring use unit, a sealant injection unit, a piercing and venting device use unit and a battery cell internal pressure detection unit; A fixed sealing ring using unit is used to, based on the processor and according to a set first control command, use a control gripper to put the fixed sealing ring onto the top of the battery cell; The sealant injection unit is used to control the sealant device to inject the sealant into the inner cavity of the fixed sealant ring based on the processor according to the set second control command to obtain a soft colloid after the sealant is solidified; The piercing and degassing device using unit is used to control the piercing and degassing device based on the processor according to the set third control command, so that the piercing and degassing device penetrates into the battery cell through the soft colloid; wherein, after the piercing and degassing device is controlled to penetrate into the battery cell through the soft colloid, it also includes: pre-detecting the pressure inside the battery cell, specifically: using the air pressure sensor connected to the processor to collect the pressure data of the degassing hole position of the piercing and degassing device within a set time period; the processor establishes a pressure data change data set according to the pressure data; analyzes the pressure data change data set, and when the stability of the pressure data change is greater than the set stability threshold, it is determined that the piercing and degassing device has penetrated into the predetermined depth inside the battery cell; wherein the calculation formula of the stability is: Where P represents the stability of the pressure data, D is the average pressure value of the pressure data in multiple sub-periods divided within the set time period; t is the total number of multiple sub-periods within the set time period, i is the i-th sub-period, and R i represents the pressure value in the i-th sub-period; The battery cell internal pressure detection unit is used to obtain the internal pressure value of the battery cell based on a barometer connected to the air leakage hole of the puncture leakage device.

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