Formation equipment and battery production line

Abstract

The utility model relates to formation equipment and a battery production line. The formation equipment comprises a negative pressure pipe, a negative pressure mechanism, a first dilution pipeline, a first valve and a controller. The negative pressure pipe is used for being communicated with a liquid injection hole of at least one battery monomer to be formed, the negative pressure mechanism is provided with a first inlet, and one end, far away from the battery monomer to be formed, of the negative pressure pipe is communicated with the first inlet. The first dilution pipeline is communicated with the negative pressure pipe, and the first valve is arranged on the first dilution pipeline. The controller is used for obtaining the first total volume of gas discharged by at least one battery monomer to be formed, and the controller is further used for setting the opening degree of the first valve according to a first condition, so that the first dilution pipeline supplies dilution gas into the negative pressure pipe at a first flow. Wherein the first condition comprises that the first flow is positively correlated with the first total volume. The safety of the formation equipment can be improved, and meanwhile, the situation that the dilution gas is wasted too much can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of formation, and in particular to a formation device and a battery production line. Background Art

[0002] During the production process of battery cells, it is usually necessary to use a formation device to perform formation and / or grading on the battery cells to form a stable solid electrolyte film on the surface of the active material of the battery cells.

[0003] However, the formation devices in related technologies have relatively large safety hazards. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, it is necessary to provide a formation device and a battery production line, which can improve the safety of the formation device and reduce the excessive waste of dilution gas.

[0005] According to a first aspect of the present application, a formation device is provided, including a negative pressure pipe, a negative pressure mechanism, a first dilution pipeline, a first valve, and a controller. The negative pressure pipe is used to communicate with the liquid injection holes of at least one battery cell to be formed. The negative pressure mechanism has a first inlet, and one end of the negative pressure pipe far from the battery cell to be formed is connected to the first inlet. The first dilution pipeline is connected to the negative pressure pipe, and the first valve is arranged on the first dilution pipeline. The controller is used to obtain the total first volume of the gas discharged by at least one battery cell to be formed, and the controller is further used to set the opening degree of the first valve according to a first condition, so that the first dilution pipeline supplies dilution gas to the negative pressure pipe at a first flow rate. Wherein, the first condition includes: the first flow rate is positively correlated with the first volume total.

[0006] In the technical solution of the present application, the controller is used to set the opening degree of the first valve according to the first condition, so that the first dilution pipeline supplies dilution gas to the negative pressure pipe at a first flow rate. The first condition includes: the first flow rate is positively correlated with the first volume total, that is, the first flow rate is positively correlated with the total volume of the gas discharged by all battery cells to be formed. Therefore, the opening degree of the first valve can be set according to the first volume total, and further the first flow rate is set according to the first volume total. Further, the concentration of the combustible gas in the mixed gas composed of the gas discharged by all battery cells to be formed and the dilution gas in the negative pressure pipe can be made less than the lower explosion limit of the combustible gas, and further the probability of explosion due to the too high concentration of the combustible gas during the formation operation can be reduced, and further the safety of the formation device can be improved. In addition, the input amount of the dilution gas is set according to the total first volume of the gas discharged by all battery cells to be formed, and the excessive waste of the dilution gas can also be reduced, and the excessive waste of the energy required to supply the dilution gas can also be reduced, and the use cost of the dilution gas can be saved.

[0007] In one embodiment, the formation device further includes a first sensor disposed on the negative pressure pipe, and the first sensor is used to detect the concentration of combustible gas in the mixed gas in the negative pressure pipe.

[0008] The concentration of combustible gas in the mixed gas in the negative pressure pipe can be detected by the first sensor, and then whether to adjust the opening degree of the first valve can be determined according to the concentration of combustible gas detected by the first sensor. The flow rate of the dilution gas supplied by the first dilution pipe into the negative pressure pipe can be manually adjusted, which can improve the safety of the formation device while reducing excessive waste of the dilution gas.

[0009] In one embodiment, the formation device further includes a first sensor disposed on the negative pressure pipe, and the first sensor is used to detect the concentration of combustible gas in the mixed gas in the negative pressure pipe. The controller is electrically connected to the first sensor and is further configured to control an increase in the opening degree of the first valve when the concentration of combustible gas detected by the first sensor is greater than a first preset value, so that the flow rate of the dilution gas supplied by the first dilution pipe increases from a first flow rate to a second flow rate, and the first preset value is less than the lower explosion limit of the combustible gas.

[0010] When the concentration of combustible gas detected by the first sensor is greater than the first preset value, it indicates that the concentration of combustible gas in the mixed gas in the negative pressure pipe is relatively high and there is still an explosion risk. By increasing the opening degree of the first valve, the flow rate of the dilution gas supplied by the first dilution pipe can be increased from the first flow rate to the second flow rate, which can further increase the flow rate of the dilution gas flowing into the negative pressure pipe from the first dilution pipe, and further reduce the concentration of combustible gas in the mixed gas in the negative pressure pipe, thus better improving the safety of the formation device.

[0011] In one embodiment, the controller is further configured to control the flow rate of the dilution gas supplied by the first dilution pipe to be the first flow rate when the concentration of combustible gas detected by the first sensor is less than a second preset value, and the second preset value is less than the first preset value.

[0012] When the concentration of combustible gas detected by the first sensor is less than the second preset value, it indicates that the dilution gas in the negative pressure pipe is sufficient to reduce the concentration of combustible gas to far below the lower explosion limit of the combustible gas. In this way, the flow rate of the dilution gas supplied by the first dilution pipe can be the first flow rate, which can improve the safety of the formation device while better reducing excessive waste of the dilution gas.

[0013] In one embodiment, the formation device further includes a formation main body for performing formation operations on at least one battery cell to be formed. Wherein, the controller is further configured to control the formation main body to stop when the concentration of combustible gas detected by the first sensor is greater than or equal to a third preset value, and the third preset value is greater than or equal to the lower explosion limit of the combustible gas.

[0014] When the concentration of the combustible gas detected by the first sensor is greater than or equal to the third preset value, it indicates that the risk of forming operation is relatively high at this time. Therefore, the controller can be used to control the operation of the forming main body to stop, so as to reduce the risk of forming operation.

[0015] In one embodiment, the negative pressure mechanism further has a first outlet communicating with the first inlet. The forming device further includes a buffer container and a second dilution pipeline. The buffer container has a buffer cavity communicating with the first outlet, and the second dilution pipeline is connected to the buffer cavity. The second dilution pipeline is used to supply dilution gas to the buffer cavity.

[0016] In this way, the mixed gas in the negative pressure pipe can flow into the buffer cavity under the negative pressure action of the negative pressure mechanism, and this part of the mixed gas can be diluted again by the dilution gas in the second dilution pipeline, which can better reduce the concentration of the combustible gas, and further can better improve the safety of the forming device.

[0017] In one embodiment, the forming device further includes a second sensor and a second valve. The second sensor is arranged on the buffer container, and the second sensor is used to detect the concentration of the combustible gas in the mixed gas in the buffer cavity. The second valve is arranged on the second dilution pipeline. Among them, the controller is electrically connected to the second sensor and the second valve respectively. The controller is further used to control the second valve to be in an open state when the concentration of the combustible gas detected by the second sensor is greater than the first preset value. The first preset value is less than the lower explosion limit of the combustible gas.

[0018] The concentration of the combustible gas can be detected again by the second sensor. When the concentration of the combustible gas detected by the second sensor is greater than the first preset value, it indicates that the concentration of the combustible gas in the mixed gas is still not low. The second valve can be controlled to be in an open state, and further the dilution gas in the second dilution pipeline can be used to better improve the safety of the forming device.

[0019] In one embodiment, the second valve includes an explosion-proof solenoid valve.

[0020] The use safety of the buffer container can be improved by using the explosion-proof solenoid valve, and the situation that the buffer container explodes due to excessive pressure in the buffer container can be reduced.

[0021] In one embodiment, the forming device further includes a first exhaust pipe and a third valve. The first exhaust pipe is connected to the buffer cavity, and the third valve is arranged on the first exhaust pipe. The controller is electrically connected to the third valve, and is further used to control the third valve to be in an open state when the concentration of the combustible gas detected by the second sensor is greater than or equal to the third preset value. The third preset value is greater than or equal to the lower explosion limit of the combustible gas.

[0022] When the concentration of the combustible gas detected by the second sensor is greater than or equal to the third preset value, it indicates that the concentration of the combustible gas in the buffer chamber is relatively high. It is very likely that it is difficult to control the concentration of the combustible gas within the controllable range solely by the dilution gas in the second dilution pipe. The third valve needs to be opened, and then the mixed gas in the buffer chamber is discharged into the first exhaust pipe for subsequent unified treatment of this part of the mixed gas, thereby improving the safety of the formation equipment.

[0023] In one embodiment, the formation equipment further includes a third sensor disposed on the buffer container, and the third sensor is used to detect the concentration of the toxic gas in the mixed gas in the buffer chamber. The controller is electrically connected to the third sensor and is further configured to control the third valve to be in an open state when the concentration of the toxic gas detected by the third sensor is greater than or equal to the fourth preset value, and the fourth preset value is greater than or equal to the lower explosion limit of the toxic gas.

[0024] When the concentration of the toxic gas detected by the third sensor is greater than or equal to the fourth preset value, it indicates that the concentration of the toxic gas detected by the third sensor is relatively high. The third valve needs to be opened to discharge the mixed gas in the buffer chamber into the first exhaust pipe for subsequent unified treatment of this part of the mixed gas, thereby improving the safety of the formation equipment.

[0025] In one embodiment, the formation equipment further includes a formation main body, a fourth sensor, a second exhaust pipe, and a fourth valve. The formation main body has a receiving cavity for receiving at least one battery monomer to be formed. The fourth sensor is disposed in the receiving cavity and is used to detect the concentration of the combustible gas in the receiving cavity. The second exhaust pipe is communicated with the receiving cavity, and the fourth valve is disposed on the second exhaust pipe. The controller is electrically connected to the fourth sensor and the fourth valve respectively, and the controller is further configured to control the fourth valve to be in an open state when the concentration of the combustible gas detected by the fourth sensor is greater than the first preset value.

[0026] When the concentration of the combustible gas detected by the fourth sensor is greater than the first preset value, it indicates that there is a leakage of the combustible gas in the receiving cavity and the concentration of the combustible gas in the receiving cavity is relatively large. The fourth valve can be opened to discharge the combustible gas in the receiving cavity to the outside of the formation main body through the second exhaust pipe, and then subsequent unified treatment can be carried out through the main exhaust pipe of the workshop where the formation equipment is located.

[0027] In one embodiment, the formation equipment further includes a fifth sensor disposed in the receiving cavity, and the fifth sensor is used to detect the concentration of the toxic gas in the receiving cavity. The controller is electrically connected to the fifth sensor and is further configured to control the fourth valve to be in an open state when the concentration of the toxic gas in the receiving cavity is greater than or equal to the fourth preset value. The fourth preset value is greater than or equal to the lower explosion limit of the toxic gas.

[0028] When the concentration of the toxic gas in the accommodation chamber is greater than or equal to the fourth preset value, it indicates that there is a leakage of toxic gas in the accommodation chamber and the concentration of the toxic gas in the accommodation chamber is relatively high. The fourth valve can be opened, so that the toxic gas in the accommodation chamber can be discharged to the outside of the forming main body through the second exhaust pipe, and then subsequent unified treatment can be carried out through the main exhaust pipe of the workshop where the forming equipment is located.

[0029] In one embodiment, the forming equipment further includes a gas-liquid separator. The gas-liquid separator is arranged on the negative pressure pipe and has a gas chamber and a liquid chamber that communicate with each other. The negative pressure pipe includes a first pipe for communicating with the liquid injection hole of at least one battery monomer to be formed, a second pipe communicating with the first inlet, and a mixing pipe. The first pipe is communicated with the liquid chamber, and the mixing pipe is respectively communicated with the second pipe, the gas chamber and the first dilution pipeline.

[0030] During the forming operation of the battery monomer to be formed, the gas discharged from the battery monomer to be formed will carry a part of the electrolyte solution. Therefore, the gas discharged from the battery monomer to be formed and the electrolyte solution carried by these gases can be separated by the gas-liquid separator. The separated gas can converge into the mixing pipe, and then be mixed with the dilution gas in the mixing pipe. The concentration of the combustible gas can be reduced by the dilution gas to improve the safety of the forming equipment.

[0031] In one embodiment, the forming equipment further includes an input button electrically connected to the controller. The controller obtains the first total volume by means of the input button.

[0032] The first total volume can be input by operating the input button so that the controller can obtain the first total volume. The corresponding first total volume can also be input according to different types of battery monomers to be formed. Furthermore, the forming equipment can be better utilized to improve the safety of the battery monomers to be formed during the forming operation, and excessive waste of the dilution gas can also be better reduced.

[0033] According to the second aspect of the present application, a battery production line is provided, including the forming equipment of any of the above embodiments.

[0034] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. Description of the Drawings

[0035] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Also, in all the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0036] Figure 1 A schematic structural diagram of a formation device according to an embodiment of the present application is shown.

[0037] Figure 2 A circuit block diagram of a formation device according to an embodiment of the present application is shown.

[0038] Figure 3 A schematic structural diagram of a door body according to an embodiment of the present application is shown.

[0039] Reference numerals: 110, negative pressure pipe; 111, first pipe; 112, second pipe; 113, mixing pipe; 120, negative pressure mechanism; 121, first inlet; 122, first outlet; 130, first dilution pipeline; 141, first valve; 142, second valve; 143, third valve; 144, fourth valve; 150, controller; 161, first sensor; 162, second sensor; 163, third sensor; 164, fourth sensor; 165, fifth sensor; 170, buffer container; 171, buffer cavity; 180, second dilution pipeline; 190, first exhaust pipe; 210, formation main body; 211, negative pressure cup; 212, manifold pipe; 213, door body; 220, second exhaust pipe; 300, gas-liquid separator; 400, nitrogen source. Detailed embodiments

[0040] To make the above objects, features, and advantages of the present application more apparent and understandable, the following detailed description of the specific embodiments of the present application will be made with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0042] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In the present application, unless otherwise clearly specified and limited, if there are terms such as "mounted", "connected", "coupled", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, if there is a description such as a first feature being "on" or "under" a second feature, the meaning may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0045] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for illustrative purposes and do not represent the only implementation.

[0046] In the related art, usually an excessive amount of air or nitrogen is introduced into the negative pressure pipe to reduce the concentration of combustible gas in the negative pressure pipe, which will cause excessive waste of energy or nitrogen required for supplying air or nitrogen.

[0047] To solve the above technical problems, this application designs a formation device and a battery production line, which can set the input amount of dilution gas according to the gas generation amount of the battery monomers to be formed during the formation process, can improve the safety of the formation device, reduce the excessive waste of dilution gas, and also reduce the excessive waste of energy required for supplying the dilution gas.

[0048] The formation device and / or battery production line disclosed in the embodiments of this application can be but are not limited to being used in the production of battery monomers. The battery device can include battery monomers manufactured by using this formation device and / or battery production line. The battery device can be used in electrical equipment, and the electrical equipment can be but is not limited to mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric vehicles, ships, spacecraft, etc. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles, spaceships, etc. The above-mentioned battery monomers and / or battery devices can be used to form the power supply system of the electrical equipment. In this way, it is convenient to provide power drive for the electrical equipment and can also improve the service life of the electrical equipment.

[0049] Figure 1 The structural schematic diagram of a formation device according to an embodiment of this application is shown. Figure 2 The circuit block diagram of a formation device according to an embodiment of this application is shown.

[0050] Please refer to Figure 1 and Figure 2 . An embodiment of this application provides a formation device, including a negative pressure pipe 110, a negative pressure mechanism 120, a first dilution pipeline 130, a first valve 141 and a controller 150.

[0051] The negative pressure pipe 110 is used to communicate with the liquid injection holes of at least one battery monomer to be formed (not shown in the figure). The negative pressure mechanism 120 has a first inlet 121, and one end of the negative pressure pipe 110 away from the battery monomer to be formed is communicated with the first inlet 121.

[0052] In this way, the negative pressure mechanism 120 can be used to form a negative pressure in the negative pressure pipe 110. During the formation operation of the battery monomer to be formed, the gas discharged from the battery monomer to be formed can be drawn into the negative pressure pipe 110 under the action of the negative pressure mechanism 120, so as to uniformly process the mixed gas composed of the gas discharged from all battery monomers to be formed and the dilution gas collected by the negative pressure pipe 110 in the subsequent process.

[0053] The negative pressure pipe 110 refers to a pipe that can draw the gas discharged from the battery monomer to be formed into it under the action of the negative pressure mechanism 120. The negative pressure pipe 110 can be a whole, or can be divided into several parts connected between the liquid injection holes of the formed battery monomer and the negative pressure mechanism 120, and no specific limitation is made here.

[0054] The negative pressure mechanism 120 can be a vacuum pump or a negative pressure pump, or other mechanisms that can form a negative pressure in the negative pressure pipe 110.

[0055] The first dilution pipeline 130 is communicated with the negative pressure pipe 110, the first valve 141 is arranged on the first dilution pipeline 130, and the controller 150 is used to obtain the first total volume of the gas discharged from at least one battery monomer to be formed. Among them, the controller 150 is used to set the opening degree of the first valve 141 according to the first condition, so that the first dilution pipeline 130 supplies dilution gas to the negative pressure pipe 110 at a first flow rate; among them, the first condition includes: the first flow rate is positively correlated with the first total volume.

[0056] The volume of the gas discharged from the battery monomer to be formed can be the gas production volume of the battery monomer to be formed, and the first total volume refers to the sum of the gas production volumes of all battery monomers to be formed.

[0057] The gas production volume of the battery monomer to be formed can be detected according to the existing detection methods (such as the equal pressure method or the equal volume method, etc.) to obtain the above-mentioned first total volume, and the first total volume is transmitted to the controller 150. The first total volume can be transmitted to the controller 150 by manual input. The manual input method can be a voice input method or a button input method. Of course, the present application is not limited thereto, and other input methods can also be used to transmit the first total volume to the controller 150.

[0058] The first dilution pipeline 130 refers to a pipeline that is communicated with the negative pressure pipe 110 and is used to supply dilution gas to the negative pressure pipe 110.

[0059] The dilution gas can be air, nitrogen or other inert gases. For example, the dilution gas is nitrogen. One end of the first dilution pipeline 130 away from the negative pressure pipe 110 is connected to a nitrogen source 400. In this way, the nitrogen in the nitrogen source 400 can be transported into the negative pressure pipe 110 through the first dilution pipeline 130. Among them, the nitrogen source 400 can be the nitrogen source 400 in the workshop where the formation equipment is located.

[0060] The first valve 141 refers to a valve provided on the first dilution pipeline 130 and used to adjust the flow rate of the dilution gas flowing into the negative pressure pipe 110 from the first dilution pipeline 130.

[0061] The first valve 141 can be a flow valve, such as a proportional valve or a solenoid valve.

[0062] The controller 150 refers to a device on the formation equipment that can obtain the first total volume, and the controller 150 is also used to set the opening degree of the first valve 141 according to the first total volume. Among them, the controller 150 can include a chip.

[0063] "The first flow rate is positively correlated with the first total volume" means that the first flow rate and the first total volume show a positively correlated change trend. For example, the concentration of combustible gas required in the mixed gas composed of the gas discharged from all battery monomers to be formed and the dilution gas in the negative pressure pipe 110 can be calculated according to the lower explosion limit of the combustible gas, and then the first flow rate that can make the concentration of the combustible gas lower than the lower explosion limit of the combustible gas can be calculated according to the first total volume.

[0064] It can be understood that the first condition includes: the first flow rate is positively correlated with the first total volume, and also includes: the lower explosion limit of the combustible gas in the negative pressure pipe 110.

[0065] In the technical solution of the present application, the controller 150 is used to set the opening degree of the first valve 141 according to the first condition, so that the first dilution pipeline 130 supplies the dilution gas to the negative pressure pipe 110 at the first flow rate. The first condition includes: the first flow rate is positively correlated with the first total volume, that is, the first flow rate is positively correlated with the total volume of the gas discharged from all battery monomers to be formed. Therefore, the opening degree of the first valve 141 can be set according to the first total volume, and then the first flow rate is set according to the first total volume. Furthermore, the concentration of the combustible gas in the mixed gas composed of the gas discharged from all battery monomers to be formed and the dilution gas in the negative pressure pipe 110 can be made less than the lower explosion limit of the combustible gas, thereby reducing the probability of explosion due to too high a concentration of combustible gas during the formation operation, and improving the safety of the formation equipment. In addition, the input amount of the dilution gas is set according to the first total volume of the gas discharged from all battery monomers to be formed, which can also reduce the situation of excessive waste of the dilution gas and the excessive waste of the energy required to supply the dilution gas.

[0066] In some embodiments, the formation device further includes a first sensor 161 disposed on the negative pressure pipe 110. The first sensor 161 is used to detect the concentration of combustible gas in the mixed gas in the negative pressure pipe 110. The controller 150 is electrically connected to the first sensor 161, and the controller 150 is configured to control an increase in the opening degree of the first valve 141 when the concentration of combustible gas detected by the first sensor 161 is greater than a first preset value, so that the flow rate of the dilution gas supplied by the first dilution pipe 130 increases from a first flow rate to a second flow rate. The first preset value is less than the lower explosion limit of the combustible gas.

[0067] The first preset value is set according to the lower explosion limit of the combustible gas.

[0068] The combustible gas is hydrogen or carbon monoxide. For example, the combustible gas is hydrogen, and the first preset value can be 0.3% - 3%. For instance, the first preset value can be 0.3%, 1%, 2% or 3%, etc.

[0069] The mixed gas in the negative pressure pipe 110 refers to the mixed gas composed of all the gases discharged from the battery monomers to be formed in the negative pressure pipe 110 and the dilution gas.

[0070] The first sensor 161 refers to a sensor capable of detecting the concentration of combustible gas in the mixed gas in the negative pressure pipe 110.

[0071] The first sensor 161 can be a two-in-one gas sensor capable of separately detecting the concentrations of hydrogen and carbon monoxide, and the model can be SGA - 502 - H2 / CO - JH; the first sensor 161 can be a gas sensor for detecting hydrogen or a gas sensor for detecting carbon monoxide.

[0072] The first sensor 161 may have a first detection port (not shown in the figure) communicating with the negative pressure pipe 110, so as to receive the mixed gas in the negative pressure pipe 110 by using the first detection port, and then the concentration of combustible gas in the mixed gas can be detected by the first sensor 161.

[0073] When the concentration of combustible gas detected by the first sensor 161 is greater than the first preset value, it indicates that the concentration of combustible gas in the mixed gas in the negative pressure pipe 110 is relatively high and there is still an explosion risk. The opening degree of the first valve 141 can be increased, so that the flow rate of the dilution gas supplied by the first dilution pipe 130 increases from the first flow rate to the second flow rate. Further, the flow rate of the dilution gas flowing into the negative pressure pipe 110 from the first dilution pipe 130 can be increased, and further, the concentration of combustible gas in the mixed gas in the negative pressure pipe 110 can be further reduced, and further, the safety of the formation device can be better improved.

[0074] In some embodiments, the controller 150 is further configured to control the flow rate of the dilution gas supplied by the first dilution pipe 130 to be a first flow rate when the concentration of the combustible gas detected by the first sensor 161 is less than a second preset value. The second preset value is less than the first preset value.

[0075] The second preset value can be set according to the lower explosive limit of the combustible gas and the first preset value.

[0076] Exemplarily, the combustible gas is hydrogen, and the second preset value is 0.1% - 1%. For example, the second preset value is 0.1%, 0.5% or 1%, etc.

[0077] It can be that after increasing the opening degree of the first valve 141, if the concentration of the combustible gas detected by the first sensor 161 is less than the second preset value, then control to decrease the opening degree of the first valve 141 so that the flow rate of the dilution gas supplied by the first dilution pipe 130 is restored to the first flow rate. It can also be that when the opening degree of the first valve 141 is not increased, if the concentration of the combustible gas detected by the first sensor 161 is less than the second preset value, then control the first valve 141 to maintain the current opening degree, and further make the flow rate of the dilution gas supplied by the first dilution pipe 130 remain the first flow rate.

[0078] When the concentration of the combustible gas detected by the first sensor 161 is less than the second preset value, it indicates that the dilution gas in the negative pressure pipe 110 is sufficient to reduce the concentration of the combustible gas to far below the lower explosive limit of the combustible gas. Thus, the flow rate of the dilution gas supplied by the first dilution pipe 130 can be the first flow rate, which can improve the safety of the formation equipment while better reducing excessive waste of the dilution gas.

[0079] In some embodiments, the formation equipment further includes a formation main body 210, and the formation main body 210 is used to perform formation operations on at least one battery monomer to be formed. The controller 150 is configured to control to stop the formation main body 210 when the concentration of the combustible gas detected by the first sensor 161 is greater than or equal to a third preset value.

[0080] The third preset value is greater than or equal to the lower explosive limit of the combustible gas.

[0081] The formation main body 210 refers to the mechanism on the formation equipment for performing formation operations on the battery monomers to be formed.

[0082] The third preset value can be set according to the lower explosive limit of the combustible gas.

[0083] Exemplarily, the combustible gas is hydrogen, and the third preset value is greater than or equal to 4%. For example, the third preset value is 4%, etc.

[0084] When the concentration of the combustible gas detected by the first sensor 161 is greater than or equal to the third preset value, it indicates that the risk of the formation operation is relatively high at this time. Therefore, the controller 150 can be used to control the operation of the formation main body 210 to stop, so as to reduce the risk of the formation operation.

[0085] It should be noted that when the formation main body 210 closes the formation process, it is still necessary to introduce the dilution gas, which is beneficial to reducing the risk.

[0086] In some embodiments, the formation device further includes a first sensor 161 provided on the negative pressure pipe 110, and the first sensor 161 is used to detect the concentration of the combustible gas in the mixed gas in the negative pressure pipe 110.

[0087] The first sensor 161 can be used to detect the concentration of the combustible gas in the mixed gas in the negative pressure pipe 110, and then determine whether it is necessary to adjust the opening degree of the first valve 141 according to the concentration of the combustible gas detected by the first sensor 161. The flow rate of the dilution gas supplied by the first dilution pipe 130 to the negative pressure pipe 110 can be adjusted manually, which can improve the safety of the formation device while reducing excessive waste of the dilution gas.

[0088] In some embodiments, the negative pressure mechanism 120 further has a first outlet 122 connected to the first inlet 121. The formation device further includes a buffer container 170 and a second dilution pipe 180. The buffer container 170 has a buffer chamber 171 connected to the first outlet 122. The second dilution pipe 180 is connected to the buffer chamber 171, and the second dilution pipe 180 is used to supply dilution gas to the buffer chamber 171.

[0089] The buffer container 170 refers to a container that can buffer the mixed gas flowing out of the negative pressure pipe 110, and the buffer chamber 171 refers to the chamber on the buffer container 170 for accommodating this part of the mixed gas.

[0090] The second dilution pipe 180 refers to a pipe connected to the buffer chamber 171 and used to supply dilution gas to the buffer chamber 171.

[0091] Exemplarily, the dilution gas is nitrogen, and an input pump can be used to pump the nitrogen in the nitrogen source 400 into the buffer chamber 171 through the second dilution pipe 180. Among them, the nitrogen source 400 can be the nitrogen source 400 in the workshop where the formation device is located.

[0092] In this way, the mixed gas in the negative pressure pipe 110 can flow into the buffer chamber 171 under the negative pressure of the negative pressure mechanism 120, and this part of the mixed gas is diluted again by the dilution gas in the second dilution pipe 180, which can better reduce the concentration of the combustible gas, and thus can better improve the safety of the formation device.

[0093] In some embodiments, the formation device further includes a second sensor 162 and a second valve 142. The second sensor 162 is disposed on the buffer container 170, and the second sensor 162 is configured to detect the concentration of combustible gas in the mixed gas in the buffer chamber 171. The second valve 142 is disposed on the second dilution pipeline 180. Wherein, the controller 150 is electrically connected to the second sensor 162 and the second valve 142 respectively.

[0094] The controller 150 is configured to control the second valve 142 to be in an open state when the concentration of the combustible gas detected by the second sensor 162 is greater than a first preset value. The first preset value is less than the lower explosion limit of the combustible gas.

[0095] The second sensor 162 refers to a sensor that is installed on the buffer container 170 and is configured to detect the concentration of combustible gas in the mixed gas in the buffer chamber 171.

[0096] The second sensor 162 may be the above-mentioned two-in-one gas sensor or a gas sensor for detecting the concentration of hydrogen.

[0097] The second valve 142 refers to a valve that is disposed on the second dilution pipeline 180 and is configured to adjust the flow rate of the dilution gas flowing from the second dilution pipeline 180 into the buffer chamber 171.

[0098] The second valve 142 may be a flow valve, such as a proportional valve or a solenoid valve.

[0099] The concentration of the combustible gas can be detected again by the second sensor 162. When the concentration of the combustible gas detected by the second sensor 162 is greater than the first preset value, it indicates that the concentration of the combustible gas in the mixed gas is still not low. The second valve 142 can be controlled to be in an open state, so that the dilution gas in the second dilution pipeline 180 can be used to better improve the safety of the formation device.

[0100] In some embodiments, the second valve 142 includes an explosion-proof solenoid valve.

[0101] The use safety of the buffer container 170 can be improved by using the explosion-proof solenoid valve, and the situation that the buffer container 170 explodes due to excessive pressure in the buffer container 170 can be reduced.

[0102] In some embodiments, the formation device further includes a first exhaust pipe 190 and a third valve 143. The first exhaust pipe 190 is communicated with the buffer chamber 171. The third valve 143 is disposed on the first exhaust pipe 190. The controller 150 is electrically connected to the third valve 143 and is configured to control the third valve 143 to be in an open state when the concentration of the combustible gas detected by the second sensor 162 is greater than or equal to a third preset value. The third preset value is greater than or equal to the lower explosion limit of the combustible gas.

[0103] The first exhaust pipe 190 can be connected to the main exhaust pipe of the workshop where the formation equipment is located, facilitating the unified treatment of the mixed gas in the first exhaust pipe 190 through the exhaust pipe of the workshop where the formation equipment is located. The third valve 143 can be a flow valve, such as a proportional valve or a solenoid valve. Exemplarily, the third valve 143 is an explosion-proof solenoid valve. Thus, both the third valve 143 and the second valve 142 play a role in improving the use safety of the buffer container 170.

[0104] When the concentration of the combustible gas detected by the second sensor 162 is greater than or equal to the third preset value, it indicates that the concentration of the combustible gas in the buffer chamber 171 is relatively high. It is very likely that it is difficult to control the concentration of the combustible gas within the controllable range solely by the dilution gas in the second dilution pipe 180. The third valve 143 needs to be opened, and then the mixed gas in the buffer chamber 171 is discharged into the first exhaust pipe 190, so as to uniformly process this part of the mixed gas subsequently, thereby improving the safety of the formation equipment.

[0105] In some embodiments, the formation equipment further includes a third sensor 163. The third sensor 163 is disposed on the buffer container 170 and is used to detect the concentration of the toxic gas in the mixed gas in the buffer chamber 171. The controller 150 is electrically connected to the third sensor 163 and is configured to control the third valve 143 to be in an open state when the concentration of the toxic gas detected by the third sensor 163 is greater than or equal to the fourth preset value. The fourth preset value is greater than or equal to the lower explosive limit of the toxic gas.

[0106] The fourth preset value can be set according to the lower explosive limit of the toxic gas.

[0107] Exemplarily, the toxic gas can be carbon monoxide, and the fourth preset value is 12.5%.

[0108] The third sensor 163 is a gas sensor disposed on the buffer container 170 and used to detect the concentration of the toxic gas.

[0109] Exemplarily, the second sensor 162 is a gas sensor used to detect the concentration of hydrogen, the third sensor 163 is a gas sensor used to detect the concentration of carbon monoxide, and the second sensor 162 and the third sensor 163 are combined into a two-in-one gas sensor, which can respectively detect the concentrations of hydrogen and carbon monoxide.

[0110] When the concentration of the toxic gas detected by the third sensor 163 is greater than or equal to the fourth preset value, it indicates that the concentration of the toxic gas detected by the third sensor 163 is relatively high. It is necessary to open the third valve 143, and then the mixed gas in the buffer chamber 171 is discharged into the first exhaust pipe 190, so as to uniformly process this part of the mixed gas subsequently, thereby improving the safety of the formation equipment.

[0111] In some embodiments, the formation device further includes a formation main body 210, a fourth sensor 164, a second exhaust pipe 220, and a fourth valve 144. The formation main body 210 has a receiving cavity for receiving at least one battery cell to be formed. The fourth sensor 164 is disposed in the receiving cavity and is configured to detect the concentration of combustible gas in the receiving cavity. The second exhaust pipe 220 is in communication with the receiving cavity. The fourth valve 144 is disposed on the second exhaust pipe 220. Wherein, the controller 150 is electrically connected to the fourth sensor 164 and the fourth valve 144 respectively. The controller 150 is configured to control the fourth valve 144 to be in an open state when the concentration of the combustible gas detected by the fourth sensor 164 is greater than a first preset value.

[0112] The fourth sensor 164 refers to a sensor disposed in the receiving cavity and configured to detect the concentration of combustible gas in the receiving cavity. The fourth sensor 164 may be a gas sensor for detecting hydrogen.

[0113] The second exhaust pipe 220 refers to an exhaust pipe that can be in communication with the receiving cavity and the main exhaust pipe of the workshop where the formation device is located.

[0114] The fourth valve 144 refers to a valve disposed on the second exhaust pipe 220. The fourth valve 144 may be a ball valve or an explosion-proof valve, etc.

[0115] When the concentration of the combustible gas detected by the fourth sensor 164 is greater than the first preset value, it indicates that there is a leakage of combustible gas in the receiving cavity and the concentration of the combustible gas in the receiving cavity is relatively high. The fourth valve 144 can be opened to discharge the combustible gas in the receiving cavity to the outside of the formation main body 210 through the second exhaust pipe 220, and then subsequent unified treatment can be carried out through the main exhaust pipe of the workshop where the formation device is located.

[0116] In some embodiments, the formation device further includes a fifth sensor 165 disposed in the receiving cavity. The fifth sensor 165 is configured to detect the concentration of toxic gas in the receiving cavity. The controller 150 is electrically connected to the fifth sensor 165 and is configured to control the fourth valve 144 to be in an open state when the concentration of the toxic gas in the receiving cavity is greater than or equal to a fourth preset value. The fourth preset value is greater than or equal to the lower explosion limit of the toxic gas.

[0117] Exemplarily, the toxic gas may be carbon monoxide, and the fifth sensor 165 is a gas sensor for detecting carbon monoxide.

[0118] When the concentration of the toxic gas in the accommodation chamber is greater than or equal to the fourth preset value, it indicates that there is a leakage of toxic gas in the accommodation chamber and the concentration of the toxic gas in the accommodation chamber is relatively high. The fourth valve 144 can be opened, so that the toxic gas in the accommodation chamber can be discharged to the outside of the forming main body 210 through the second exhaust pipe 220, and then can be uniformly processed subsequently through the main exhaust pipe of the workshop where the forming equipment is located.

[0119] In some embodiments, the forming equipment further includes a gas-liquid separator 300. The gas-liquid separator 300 is disposed on the negative pressure pipe 110 and has a gas chamber (not shown in the figure) and a liquid chamber (not shown in the figure) that communicate with each other. The negative pressure pipe 110 includes a first pipe 111 for communicating with the liquid injection hole of at least one battery monomer to be formed, a second pipe 112 communicating with the first inlet 121, and a mixing pipe 113. The first pipe 111 communicates with the liquid chamber, and the mixing pipe 113 communicates with the second pipe 112, the gas chamber and the first dilution pipeline 130 respectively.

[0120] In this embodiment, the first detection port of the first sensor 161 communicates with the mixing pipe 113.

[0121] The gas-liquid separator 300 refers to a device that can separate the gas discharged from the battery monomer to be formed and the electrolyte solution carried by these gases. The liquid chamber refers to the chamber on the gas-liquid separator 300 for receiving the gas discharged from the battery monomer to be formed and the electrolyte solution carried by these gases and for storing the separated liquid. The gas chamber refers to the chamber on the gas-liquid separator 300 for storing the separated gas.

[0122] The first pipe 111 refers to the pipe on the negative pressure pipe 110 that communicates with the liquid injection hole of the battery monomer to be formed. The second pipe 112 refers to the pipe on the negative pressure pipe 110 that communicates with the first inlet 121. The mixing pipe 113 refers to the pipe on the negative pressure pipe 110 for mixing the dilution gas and all the gases discharged from the battery monomers to be formed, and for enabling the mixed gas to flow through the second pipe 112 to the first inlet 121 of the negative pressure mechanism 120.

[0123] During the forming operation of the battery monomer to be formed, the gas discharged from the battery monomer to be formed will carry a part of the electrolyte solution. Therefore, the gas discharged from the battery monomer to be formed and the electrolyte solution carried by these gases can be separated by the gas-liquid separator 300. The separated gas can converge into the mixing pipe 113, and then be mixed with the dilution gas in the mixing pipe 113. The concentration of the combustible gas can be reduced by the dilution gas to improve the safety of the forming equipment.

[0124] In some embodiments, the formation device includes a plurality of gas-liquid separators 300. The liquid chambers of all the gas-liquid separators 300 are connected in parallel to the first pipe 111, and the gas chambers of all the gas-liquid separators 300 are connected in parallel to the mixing pipe 113.

[0125] Exemplarily, there are three gas-liquid separators 300. The liquid chambers of the three gas-liquid separators 300 are connected in parallel to the first pipe 111, and the gas chambers of the three gas-liquid separators 300 are connected in parallel to the mixing pipe 113.

[0126] In this way, through the plurality of gas-liquid separators 300, it is possible to better separate the gas discharged from all the battery monomers to be formed and the electrolyte solution carried by these gases. The separated gas can converge into the mixing pipe 113, and then be mixed with the dilution gas in the mixing pipe 113. The concentration of the combustible gas can be reduced by the dilution gas to improve the safety of the formation device.

[0127] In some embodiments, the first total volume can be input in a manual input manner so that the controller 150 can obtain the first total volume. For example, the formation device further includes an input button (not shown in the figure) electrically connected to the controller 150. For another example, the formation device further includes a touch display screen (not shown in the figure) electrically connected to the controller 150, and the touch display screen includes the input button.

[0128] The first total volume can be input by operating the input button so that the controller 150 can obtain the first total volume. The corresponding first total volume can also be input according to different models of the battery monomers to be formed, thereby better using the formation device to improve the safety of the battery monomers to be formed during the formation operation, and also better reducing excessive waste of the dilution gas.

[0129] In some embodiments, the touch display screen further includes a display screen electrically connected to the controller 150. The display screen is used to display the first total volume, facilitating the operator to judge whether the input first total volume is correct.

[0130] The controller 150 may include a storage module. The storage module is used to store the first total volume. The storage module can be electrically connected to the input button to store the first total volume input by the input button.

[0131] The formation main body 210 may include a manifold 212 and at least one negative pressure cup 211. One end of the negative pressure cup 211 is correspondingly connected to the liquid injection hole of the battery monomer to be formed, and the other end of the negative pressure cup 211 is connected to the end of the negative pressure pipe 110 away from the negative pressure mechanism 120 through the manifold 212. It can be that the other end of the negative pressure cup 211 is connected to the end of the first pipe 111 of the negative pressure pipe 110 away from the liquid chamber through the manifold 212.

[0132] In some embodiments, such asFigure 3 As shown, the formation main body 210 further includes a housing with an opening, and a door body 213 for opening or closing the opening. The housing and the door body 213 define the above-mentioned accommodation cavity. The mixing pipe 113 of the negative pressure pipe 110, the first sensor 161, the second sensor 162, the third sensor 163, the first dilution pipe 130, the buffer container 170, the second dilution pipe 180 and the gas-liquid separator 300 are all arranged on the door body 213 and are located outside the accommodation cavity.

[0133] In this way, it is convenient to read the concentration of the gas detected by the first sensor 161, the second sensor 162 and the third sensor 163, and it is also convenient to adjust the first valve 141 on the first dilution pipe 130 or the second valve 142 on the second dilution pipe 180 as needed.

[0134] It should be noted that a part of the first pipe 111 of the negative pressure pipe 110 can be located in the accommodation cavity (in the figure, the part of the first pipe 111 located in the accommodation cavity is not shown), so as to communicate with the confluence pipe 212. Another part of the first pipe 111 passes through the door body 213 and is respectively connected to the liquid cavities of a plurality of gas-liquid separators 300. A sealing ring can be provided between the part of the first pipe 111 passing through the door body 213 and the door body 213.

[0135] In some embodiments, the formation device includes a negative pressure pipe 110, a negative pressure mechanism 120, a first dilution pipe 130, a first valve 141, a controller 150 and a first sensor 161.

[0136] The controller 150 is electrically connected to the first sensor 161 and the first valve 141 respectively. The controller 150 can set the opening degree of the first valve 141 according to the first total volume, and the controller 150 can also adjust the opening degree of the first valve 141 according to the detected concentration of the combustible gas, forming a control closed loop for the concentration of the combustible gas. Furthermore, while improving the safety of the formation device, the situation of excessive waste of dilution gas can also be reduced.

[0137] Using the formation device of the present application, the concentration of combustible gas (such as hydrogen) can be effectively controlled within 0.1%, and the use cost of dilution gas (such as nitrogen) can also be saved.

[0138] An embodiment of the present application provides a battery production line, including the formation device of any of the above embodiments.

[0139] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0140] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A formation device, characterized in that, Comprising: A negative pressure pipe (110) for communicating with the liquid injection holes of at least one battery monomer to be formed; A negative pressure mechanism (120) having a first inlet (121), and one end of the negative pressure pipe (110) away from the battery monomer to be formed is communicated with the first inlet (121); A first dilution pipeline (130) communicated with the negative pressure pipe (110); A first valve (141) provided on the first dilution pipeline (130); and A controller (150) for obtaining the total first volume of the gas discharged from the at least one battery monomer to be formed; Wherein, the controller is further configured to set the opening degree of the first valve according to a first condition, so that the first dilution pipeline (130) supplies dilution gas to the negative pressure pipe (110) at a first flow rate; wherein, the first condition includes: the first flow rate is positively correlated with the total first volume.

2. The formation device according to claim 1, wherein The forming device further includes a first sensor (161) provided on the negative pressure pipe (110); The first sensor (161) is used to detect the concentration of combustible gas in the mixed gas in the negative pressure pipe (110).

3. The formation device according to claim 1, characterized in that, The forming device further includes a first sensor (161) provided on the negative pressure pipe (110); The first sensor (161) is used to detect the concentration of combustible gas in the mixed gas in the negative pressure pipe (110); The controller (150) is electrically connected to the first sensor (161), and is further configured to control an increase in the opening degree of the first valve (141) when the concentration of the combustible gas detected by the first sensor (161) is greater than a first preset value, so that the flow rate of the dilution gas supplied by the first dilution pipeline (130) increases from the first flow rate to a second flow rate; The first preset value is less than the lower explosion limit of the combustible gas.

4. The formation device according to claim 3, characterized in that, The controller (150) is further configured to control the flow rate of the dilution gas supplied by the first dilution pipeline (130) to be the first flow rate when the concentration of the combustible gas detected by the first sensor (161) is less than a second preset value; The second preset value is less than the first preset value.

5. The formation device according to claim 3, characterized in that, The forming device further includes: A forming main body (210) for performing a forming operation on the at least one battery monomer to be formed; Wherein, the controller (150) is further configured to control the stop of the forming main body (210) when the concentration of the combustible gas detected by the first sensor (161) is greater than or equal to a third preset value; The third preset value is greater than or equal to the lower explosion limit of the combustible gas.

6. The formation device according to any one of claims 1-5, characterized in that, The negative pressure mechanism (120) further has a first outlet (122) communicated with the first inlet (121); the forming device further includes: A buffer container (170), the buffer container (170) having a buffer chamber (171) communicated with the first outlet (122); and A second dilution pipeline (180) communicated with the buffer chamber (171); the second dilution pipeline (180) is used to supply dilution gas into the buffer chamber (171).

7. The formation device according to claim 6, wherein The forming device further includes: A second sensor (162) is provided on the buffer container (170), and the second sensor (162) is used to detect the concentration of combustible gas in the mixed gas in the buffer chamber (171); and A second valve (142) is provided on the second dilution pipeline (180); Wherein, the controller (150) is electrically connected to the second sensor (162) and the second valve (142) respectively; The controller (150) is further configured to control the second valve (142) to be in an open state when the concentration of combustible gas detected by the second sensor (162) is greater than a first preset value; The first preset value is less than the lower explosion limit of the combustible gas.

8. The formation device according to claim 7, characterized in that, The second valve (142) includes an explosion-proof solenoid valve.

9. The formation device according to claim 7, wherein The forming device further includes: A first exhaust pipe (190) is communicated with the buffer chamber (171); and A third valve (143) is provided on the first exhaust pipe (190); The controller (150) is electrically connected to the third valve (143), and is further configured to control the third valve (143) to be in an open state when the concentration of combustible gas detected by the second sensor (162) is greater than or equal to a third preset value; The third preset value is greater than or equal to the lower explosion limit of the combustible gas.

10. The formation device according to claim 9, characterized in that, The forming device further includes: A third sensor (163) is provided on the buffer container (170), and the third sensor (163) is used to detect the concentration of toxic gas in the mixed gas in the buffer chamber (171); Wherein, the controller (150) is electrically connected to the third sensor (163), and is configured to control the third valve (143) to be in an open state when the concentration of toxic gas detected by the third sensor (163) is greater than or equal to a fourth preset value; The fourth preset value is greater than or equal to the lower explosion limit of the toxic gas.

11. The formation device according to any one of claims 1-5, characterized in that, The forming device further includes: A forming main body (210), the forming main body (210) has a receiving cavity for receiving the at least one battery monomer to be formed; A fourth sensor (164) is provided in the receiving cavity, and is used to detect the concentration of combustible gas in the receiving cavity; A second exhaust pipe (220) is communicated with the receiving cavity; and A fourth valve (144) is provided on the second exhaust pipe (220); Wherein, the controller (150) is electrically connected to the fourth sensor (164) and the fourth valve (144) respectively; The controller (150) is further configured to control the fourth valve (144) to be in an open state when the concentration of the combustible gas detected by the fourth sensor (164) is greater than the first preset value.

12. The formation device according to claim 11, wherein The forming device further includes a fifth sensor (165) provided in the receiving cavity; The fifth sensor (165) is used to detect the concentration of toxic gas in the receiving cavity; The controller (150) is electrically connected to the fifth sensor (165), and is further configured to control the fourth valve (144) to be in an open state when the concentration of toxic gas in the receiving cavity is greater than or equal to the fourth preset value; The fourth preset value is greater than or equal to the lower explosion limit of the toxic gas.

13. The formation device according to any one of claims 1-5, characterized in that, The forming device further includes a gas-liquid separator (300); The gas-liquid separator (300) is provided on the negative pressure pipe (110) and has a gas chamber and a liquid chamber communicating with each other; The negative pressure pipe (110) includes a first pipe (111) for communicating with the liquid injection hole of at least one battery monomer to be formed, a second pipe (112) communicating with the first inlet (121), and a mixing pipe (113); The first pipe (111) communicates with the liquid chamber; The mixing pipe (113) communicates with the second pipe (112), the gas chamber and the first dilution pipeline (130) respectively.

14. The formation device according to any one of claims 1-5, characterized in that, The forming device further includes an input button electrically connected to the controller (150); The controller (150) obtains the first total volume by means of the input button.

15. A battery production line, characterized in that, It includes the forming device according to any one of claims 1-14.

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