Stirring apparatus and battery production system

Abstract

Provided in the present application are a stirring apparatus and a battery production system. The stirring apparatus comprises a stirring tank, a material conveying pipe, and a grounding mechanism. The stirring tank is used for stirring a slurry. The material conveying pipe is connected to the stirring tank, and the material conveying pipe is used for connecting to an external transfer tank. The grounding mechanism comprises a grounding member, a first grounding line, and a second grounding line, wherein the first grounding line is used for connecting to the transfer tank, the second grounding line is connected to the stirring tank, and the first grounding line and the second grounding line are both electrically connected to the grounding member. The present application can reduce the risk of safety accidents occurring during the production process.

Description

Agitating device and battery production system

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202422358875.0, filed on September 26, 2024, entitled “Agitating device and battery production system”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of batteries, and in particular to an agitating device and a battery production system. BACKGROUND

[0004] Battery cells are widely used in electronic devices, such as mobile phones, notebook computers, electric vehicles, electric cars, electric planes, electric ships, electric toy cars, electric toy ships, electric toy planes, and electric tools, etc. Battery cells can include cadmium-nickel battery cells, hydrogen-nickel battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0005] In the development of battery technology, how to reduce the risk of safety accidents in the production process has always been a research direction in battery technology.

[0006] Practical new type content

[0007] In view of the above problems, the present application provides an agitating device and a battery production system, which can reduce the risk of safety accidents in the production process.

[0008] In a first aspect, the present application provides an agitating device. The agitating device includes an agitating tank, a material conveying pipe, and a grounding mechanism. The agitating tank is used for agitating slurry. The material conveying pipe is connected to the agitating tank and is used for connecting to an external transfer tank. The grounding mechanism includes a grounding piece, a first grounding circuit, and a second grounding circuit. The first grounding circuit is used for connecting to the transfer tank, and the second grounding circuit is connected to the agitating tank. The first grounding circuit and the second grounding circuit are both electrically connected to the grounding piece.

[0009] In the above scheme, by connecting the agitating tank and the transfer tank to the same grounding piece, when the transfer tank moves to the area where the agitating tank is located, the agitating tank and the transfer tank form equipotential grounding, thereby reducing the potential difference between the transfer tank and the agitating tank, and further reducing the generation of static electricity and the risk of safety accidents caused by static electricity fire explosion in the production process.

[0010] In some embodiments, the first grounding circuit includes a detection feedback device and a first grounding line. The detection feedback device is connected in series between the transfer tank and the grounding piece through the first grounding line.

[0011] In the scheme, the detection feedback device is arranged to detect whether the grounding line between the transfer tank and the grounding member is in communication, so as to reduce the risk of static fire caused by failure of the first grounding line, thereby reducing the risk of safety accidents caused by explosion due to static fire.

[0012] In some embodiments, the stirring device further comprises a controller and a control valve, the controller is in communication with the detection feedback device, and the controller is used to control the opening and closing of the control valve, and the control valve is used to control whether the feed pipe is in communication.

[0013] In the scheme, the controller and the control valve are arranged, so that when the detection feedback device detects an abnormality of the first grounding line, the detection feedback device feeds back the abnormality information to the controller, and the controller controls the control valve to be closed. When the detection feedback device detects that the first grounding line is in normal use, the detection feedback device feeds back the information that the first grounding line is in normal use to the controller, and the controller controls the control valve to be opened. The above process can be performed after the connection between the first grounding line and the transfer tank is completed, or the information of the first grounding line can be detected in real time during the slurry conveying process. The controller controls the control valve according to the real-time detected information, so that the grounding signal and the slurry conveying are interlocked, thereby reducing the possibility of static fire caused by abnormality of the first grounding line during the slurry conveying process, and reducing the possibility of safety accidents during the production process.

[0014] In some embodiments, the first grounding line further comprises a clamping portion, the clamping portion is connected with the first grounding line, and the clamping portion is used to clamp the transfer tank.

[0015] In the scheme, the clamping portion is arranged to simplify the connection mode of the first grounding line and the transfer tank, and the clamping mode can also increase the contact area of the first grounding line and the transfer tank, thereby reducing the impedance and the possibility of poor contact.

[0016] In some embodiments, the first grounding line further comprises a plurality of sub-connection lines, and the first grounding line is connected with the grounding member through the plurality of sub-connection lines.

[0017] In the scheme, the plurality of sub-connection lines are arranged to increase the reliability of the connection between the first grounding line and the grounding member, reduce the overall impedance of the first grounding line, and further reduce the risk of safety accidents during the production process.

[0018] In some embodiments, the second grounding line comprises a plurality of second grounding lines, and the plurality of second grounding lines are connected to the stirring tank.

[0019] In the scheme, the plurality of second grounding lines are arranged to realize multi-point grounding of the stirring tank, thereby reducing the overall impedance of the second grounding line, improving the signal stability, and improving the anti-interference ability.

[0020] In some embodiments, the grounding mechanism further comprises a third grounding line connected to the grounding member and configured to be connected to the transfer tank.

[0021] In the above scheme, the first grounding line and the third grounding line are both connected to the grounding member, and the first grounding line and the third grounding line are both configured to be connected to the transfer tank, so that multi-point grounding of the transfer tank is achieved, thereby reducing the overall impedance of the second grounding line, improving signal stability, and improving anti-interference capability.

[0022] In some embodiments, the third grounding line comprises a third grounding wire, a power supply wire, and a connector, the third grounding wire and the power supply wire are both connected to the connector, and the connector is configured to be connected to the transfer tank.

[0023] In the above scheme, the connection mode of the third grounding line and the transfer tank is facilitated to be simplified, and information in the transfer tank can be transmitted to the stirring device in real time after the transfer tank is powered on, so that the stirring device can determine whether to deliver the slurry according to the information in the transfer tank, thereby achieving electrical control safety interlocking.

[0024] In a second aspect, the embodiments of the present application provide a battery production system, which comprises a transfer tank and the stirring device in any of the foregoing embodiments, and the stirring device is connected to the transfer tank through a delivery pipe.

[0025] In some embodiments, the transfer tank comprises at least one of a pressure detection member, a weight detection member, a gas detection member, and a liquid level detection member, and the detection member can feed back whether the delivery of the slurry is completed, thereby reducing the possibility that the transfer tank cannot normally store the slurry due to excessive slurry in the transfer tank.

[0026] In some embodiments, the stirring device comprises a controller and a control valve, the transfer tank comprises a pressure detection member, a weight detection member, and a liquid level detection member, the pressure detection member, the weight detection member, and the liquid level detection member are all in communication with the controller, and when the detection information of any one of the pressure detection member, the weight detection member, and the liquid level detection member exceeds a preset range, the controller is configured to control the control valve to be closed.

[0027] In the above scheme, when the slurry exceeds a preset weight, the slurry exceeds a preset liquid level, or the pressure received by the transfer tank exceeds a preset pressure, the delivery of the slurry is interrupted, thereby reducing the possibility that the transfer tank cannot normally store the slurry due to exceeding the storage requirement of the transfer tank.

[0028] In some embodiments, the stirring device further comprises a controller, the battery production system comprises a gas storage tank, the transfer tank comprises a gas detection member, the gas detection member and the gas storage tank are both in communication with the controller, the gas storage tank is connected to the transfer tank, and when the detection information of the gas detection member exceeds a preset range, the controller is configured to control the gas storage tank to be opened.

[0029] In the above scheme, when the oxygen concentration detected by the gas detection member exceeds the preset range, the gas storage tank can be controlled to open, so that the inert gas is delivered into the transfer tank, so that the oxygen in the transfer tank is discharged, thereby reducing the oxygen concentration in the transfer tank, and reducing the risk of explosion of the transfer tank due to the too high oxygen concentration in the transfer tank.

[0030] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the following specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0032] Fig. 1 is a schematic diagram of a battery production system provided by an embodiment of the present application;

[0033] Fig. 2 is a schematic diagram of another battery production system provided by an embodiment of the present application;

[0034] Fig. 3 is a structural schematic diagram of a stirring device provided by an embodiment of the present application;

[0035] Fig. 4 is a schematic diagram of a battery production system provided by an embodiment of the present application.

[0036] MARK DESCRIPTION

[0037] 10, stirring tank; 20, material conveying pipe;

[0038] 30, grounding mechanism; 31, grounding member; 32, first grounding circuit; 321, first grounding line; 321a, first segment of first grounding line; 321b, second segment of first grounding line; 322, detection feedback device; 322a, first connection end; 322b, second connection end; 322c, third connection end; 322d, fourth connection end; 323, clamping part; 324, multiple sub-connection lines; 33, second grounding circuit; 331, second grounding line; 34, third grounding circuit; 341, third grounding line; 342, power supply line; 343, connector; 343a, grounding wire;

[0039] 40, control valve; 50, controller; 60, transfer tank; 61, tank body; 62, handle; 63, moving wheel; 64, junction box; 65, docking device; 66, exhaust valve; 70, power supply. DETAILED DESCRIPTION

[0040] The embodiments of the present application will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot be used to limit the protection scope of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the terms "comprising," "comprises" and "including" as used herein are synonymous with and meant to have the same meaning as the term "including"; the term "comprising" as used herein is meant to be open-ended and include the possibility of one or more additional elements.

[0042] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0043] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, or necessarily alternatives to other embodiments. It will be explicitly and implicitly appreciated by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.

[0045] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging of the battery cell.

[0049] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0050] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow the active ions to pass through.

[0051] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material arranged on at least one surface of the positive electrode current collector.

[0052] As an example, the positive electrode current collector has two opposite surfaces in its own thickness direction, and the positive electrode active material is arranged on any one or both of the two opposite surfaces of the positive electrode current collector.

[0053] As an example, the positive electrode current collector can employ a metal foil or a composite current collector. For example, as a metal foil, silver surface-treated stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (aluminum, an aluminum alloy, nickel, a nickel alloy, titanium, a titanium alloy, silver, and a silver alloy, or the like) on a polymer material base material (such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0054] In some embodiments, the negative electrode can be a negative electrode sheet, and the negative electrode sheet can include a negative electrode current collector.

[0055] As an example, the negative electrode current collector can employ a metal foil, a foamed metal, a foamed carbon, or a composite current collector. For example, as a metal foil, silver surface-treated stainless steel, copper, aluminum, nickel, a carbon electrode, carbon, nickel, or titanium, or the like can be employed. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, or a foamed alloy, or the like. The composite current collector can include a polymer material base layer and a metal layer. The composite current collector can be formed by forming a metal material (copper, a copper alloy, nickel, a nickel alloy, titanium, a titanium alloy, silver, and a silver alloy, or the like) on a polymer material base material (such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, or the like).

[0056] As an example, the negative electrode sheet can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0057] As an example, the negative electrode current collector has two surfaces opposite in the thickness direction thereof, and the negative electrode active material is disposed on either one or both of the two opposite surfaces of the negative electrode current collector.

[0058] As an example, the negative electrode active material can employ a negative electrode active material known in the art for a battery cell. As an example, the negative electrode active material can include at least one of artificial graphite, natural graphite, soft carbon, hard carbon, a silicon-based material, a tin-based material, lithium titanate, or the like.

[0059] In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0060] The battery device referred to in the embodiments of the present application can include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly can include a plurality of battery cells connected in series, in parallel, or in a mixed connection through a bus member.

[0061] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells; as an example, the battery cell assembly can be a battery module, which is formed by arranging and fixing a plurality of battery cells into one independent module. As an example, the battery module can be formed by bundling a plurality of battery cells by a cable tie.

[0062] In some embodiments, the battery device can be a battery pack, which includes a box body and one or more battery cell assemblies, and the battery cell assemblies are accommodated in the box body.

[0063] As an example, the battery cell assembly can be a battery module, which can be accommodated in the box body by fixing the battery module in the box body.

[0064] As an example, the battery cell assembly can also be accommodated in the box body by directly fixing a plurality of battery cells in the box body.

[0065] In some embodiments, the box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0066] In some embodiments, the battery device can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0067] With the continuous development of battery cells, battery cells are not only applied to energy storage power systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields, thereby causing an explosive increase in the demand for battery cells.

[0068] Battery slurry is an important material for forming battery cells, and the quality of the battery slurry applied on the positive and negative electrode current collectors (aluminum foil / copper foil) directly affects the performance of the battery cells.

[0069] In the production process of the battery, a slurry coating process operation is required to be performed on the electrode sheet using the battery slurry. The battery slurry is prepared and stored in a stirring tank and is transferred to the preparation site of the slurry coating process via a transfer tank.

[0070] Since the battery slurry contains powder during preparation, a large amount of dust will be raised in the area where the stirring tank is located during stirring. During the transfer process, the worker needs to push the transfer tank to move to the area where the stirring tank is located. The stirring tank will generate static electricity during the movement, which will cause the risk of explosion due to static electricity fire during the transfer process.

[0071] Based on the above technical problems, the application provides a technical scheme, by connecting the stirring tank and the transfer tank to the same grounding piece, so that when the transfer tank moves to the area where the stirring tank is located, the stirring tank and the transfer tank form equipotential grounding, thereby reducing the potential difference between the transfer tank and the stirring tank, and further reducing the generation of static electricity and the risk of safety accidents caused by fire explosion due to static electricity in the production process.

[0072] Fig. 1 is a schematic diagram of a battery production system provided by an embodiment of the application.

[0073] Referring to Fig. 1, the application provides a stirring device, which includes a stirring tank 10, a material conveying pipe 20, and a grounding mechanism 30. The stirring tank 10 is used for stirring slurry. The material conveying pipe 20 is connected to the stirring tank 10 and is used for connecting to an external transfer tank 60. The grounding mechanism 30 includes a grounding piece 31, a first grounding line 32, and a second grounding line 33. The first grounding line 32 is used for connecting to the transfer tank 60, the second grounding line 33 is connected to the stirring tank 10, and the first grounding line 32 and the second grounding line 33 are both electrically connected to the grounding piece 31.

[0074] Optionally, the production process of the battery can include processes such as slurry preparation, coating, cold pressing, striping, winding, packaging, liquid injection, and formation. The slurry preparation is the first process in the battery production process, and the purpose is to disperse active material powder, conductive agent powder, dispersant / binder powder or solution, etc. in the solvent to form a uniform and stable suspension. The uniformity of the dispersion of each component in the suspension has a direct impact on the subsequent coating process, drying process, cold pressing and striping process. The stirring tank 10 is an important equipment in the slurry preparation process, which can stir the suspension into a shape. Optionally, the slurry can include battery slurry, and the battery slurry can be a shaped suspension.

[0075] The slurry in the stirring tank 10 can be conveyed to the transfer tank 60 through the material conveying pipe 20, and the transfer tank 60 moves the slurry to the area where the subsequent process is located for use in the subsequent process. Optionally, a pressure relief valve or the like can be provided on the material conveying pipe 20 to reduce the possibility of rupture of the material conveying pipe 20.

[0076] Optionally, the grounding piece 31 can be a grounding busbar, for example, the area where the stirring device is located is a stirring workshop, and the grounding piece 31 can be connected to the grounding line in the stirring workshop. Alternatively, the grounding piece 31 can be a grounding busbar of the stirring workshop.

[0077] Optionally, one end of the first grounding line 32 is connected to the grounding piece 31, and the other end of the first grounding line 32 is used for connecting to the transfer tank 60.

[0078] Optionally, one end of the second grounding line 33 is connected to the grounding member 31, and the other end of the second grounding line 33 is connected to the stirring tank 10.

[0079] Optionally, the transfer tank 60 can include a trolley and a tank body 61 arranged on the trolley. The trolley can include a handle 62 and a moving wheel 63. A worker can push the trolley by the handle 62 to drive the tank body 61 to move. The moving wheel 63 can drive the trolley and the tank body 61 on the trolley to move. When the transfer tank 60 moves to the mixing room to receive materials, the transfer tank 60 is moved to a predetermined position in the mixing room, and the moving wheel 63 is fixed. The material conveying pipe 20 is connected to the transfer tank 60. The first grounding line 32 is connected to the transfer tank 60 to realize the equipotential grounding of the transfer tank 60 and the stirring tank 10.

[0080] In the technical scheme of the embodiment, the stirring tank 10 and the transfer tank 60 can be connected to the same grounding member 31, so that when the transfer tank 60 moves to the area where the stirring tank 10 is located, the stirring tank 10 and the transfer tank 60 form equipotential grounding, thereby reducing the potential difference between the transfer tank 60 and the stirring tank 10, and further reducing the generation of static electricity and the risk of safety accidents caused by explosion due to static electricity.

[0081] In some optional embodiments, referring to FIG. 2, the first grounding line 32 includes a detection feedback device 322 and a first grounding line 321. The detection feedback device 322 is connected between the transfer tank 60 and the grounding member 31 through the first grounding line 321.

[0082] Optionally, the first grounding line 321 can include a first segment and a second segment. The detection feedback device 322 and the transfer tank 60 are connected through the first segment of the first grounding line 321a, and the detection feedback device 322 and the grounding member 31 are connected through the second segment of the first grounding line 321b.

[0083] In these optional embodiments, the detection feedback device 322 is arranged to detect whether the grounding line between the transfer tank 60 and the grounding member 31 is connected, so as to reduce the risk of static electricity fire caused by failure of the first grounding line 32, thereby reducing the risk of safety accidents caused by explosion due to static electricity fire.

[0084] FIG. 2 is a schematic diagram of another battery production system according to an embodiment of the present application. FIG. 3 is a structural schematic diagram of a stirring device according to an embodiment of the present application.

[0085] In some optional embodiments, referring to FIG. 2 and FIG. 3, the stirring device further includes a controller 50 and a control valve 40. The controller 50 is in communication with the detection feedback device 322. The controller 50 is configured to control the control valve 40 to open or close. The control valve 40 is configured to control whether the material conveying pipe 20 is connected.

[0086] Exemplarily, the detection feedback device 322 can include a first connecting end 322a, a second connecting end 322b, a third connecting end 322c and a fourth connecting end 322d. The first connecting end 322a is used to connect the transfer tank 60 through the first segment of the first grounding line 321a. The second connecting end 322b is used to connect the grounding member 31 through the second segment of the first grounding line 321b. The third connecting end 322c is connected with the controller 50 to realize the communication between the detection feedback device 322 and the controller 50. The fourth connecting end 322d is used to be connected to the power supply 70. Optionally, the power supply 70 is used to provide voltage for the detection feedback device 322.

[0087] The control valve 40 is used to control whether the material conveying pipe 20 is in communication. It can be understood that when the control valve 40 is opened, the slurry in the stirring tank 10 can be conveyed to the transfer tank 60 through the material conveying pipe 20. When the control valve 40 is closed, the slurry in the stirring tank 10 cannot be conveyed to the transfer tank 60 through the material conveying pipe 20.

[0088] In the embodiment of the present application, by arranging the controller 50 and the control valve 40, when the detection feedback device 322 detects that the first grounding line 32 is abnormal, the detection feedback device 322 feeds back the abnormal information to the controller 50, and the controller 50 controls the control valve 40 to be closed. When the detection feedback device 322 detects that the first grounding line 32 is in normal use, the detection feedback device 322 feeds back the information that the first grounding line 32 is in normal use to the controller 50, and the controller 50 controls the control valve 40 to be opened. The above process can be performed after the connection between the first grounding line 32 and the transfer tank 60 is completed, or the information of the first grounding line 32 can be detected in real time during the slurry conveying process. The controller 50 controls the control valve 40 according to the information detected in real time, so that the grounding signal and the slurry conveying are realized in interlocking control, the possibility that the first grounding line 32 is abnormal during the slurry conveying process causes the static electricity to catch fire is reduced, and thus the possibility that the safety accident occurs in the production process is reduced.

[0089] Optionally, when the detection feedback device 322 detects the abnormal information of the first grounding line 32, the detection feedback device 322 can also prompt the operator or the controller 50 in the form of alarm.

[0090] In some optional embodiments, referring to FIG. 2, the first grounding line 32 further includes a clamping part 323 connected with the first grounding line 321. The clamping part 323 is used to clamp the transfer tank 60.

[0091] Optionally, the clamping part 323 can include a grounding clamp, and the transfer tank 60 can include a protruding part. The clamping part 323 can be clamped on the protruding part. Optionally, the clamping part 323 and the grounding clamp can both be made of conductive material.

[0092] The embodiment of the present application simplifies the connection mode of the first grounding line 32 and the transfer tank 60 by arranging the clamping part 323, and the contact area of the first grounding line 32 and the transfer tank 60 can be increased by clamping, so as to reduce the impedance and the possibility of poor contact.

[0093] In some optional embodiments, referring to FIG. 2, the first grounding line 32 further includes a plurality of sub-connection lines 324, and the first grounding line 321 is connected to the grounding member 31 through the plurality of sub-connection lines 324.

[0094] For example, the grounding member 31 includes a plurality of grounding interfaces, and the plurality of sub-connection lines 324 and the plurality of grounding interfaces are connected one by one, and one end of the first grounding line 321 is connected to the plurality of sub-connection lines 324.

[0095] In the embodiment of the present application, the plurality of sub-connection lines 324 are arranged to increase the reliability of the connection between the first grounding line 32 and the grounding member 31, reduce the overall impedance of the first grounding line 32, and further reduce the risk of safety accidents in the production process.

[0096] In some optional embodiments, referring to FIG. 2, the second grounding line 33 includes a plurality of second grounding lines 331, and the plurality of second grounding lines 331 are connected to the stirring tank 10.

[0097] For example, the plurality of second grounding lines 331 can be connected to different positions of the stirring tank 10 respectively. For example, the plurality of second grounding lines 331 are connected to different side walls of the stirring tank 10 respectively.

[0098] The embodiment of the present application arranges the plurality of second grounding lines 331 to realize multi-point grounding of the stirring tank 10, so as to reduce the overall impedance of the second grounding line 33, improve the signal stability, and improve the anti-interference ability.

[0099] In some optional embodiments, referring to FIG. 2, the grounding mechanism 30 further includes a third grounding line 34, the third grounding line is connected to the grounding member 31, and the third grounding line 34 is used to be connected to the transfer tank 60.

[0100] In the embodiment of the present application, the first grounding line 32 and the third grounding line 34 are both connected to the grounding member 31, and the first grounding line 32 and the third grounding line 34 are both used to be connected to the transfer tank 60, so as to realize multi-point grounding of the transfer tank 60, further reduce the overall impedance of the second grounding line 33, improve the signal stability, and improve the anti-interference ability.

[0101] Optionally, the first grounding line 32 and the third grounding line 34 can release the static electricity brought by the operator himself.

[0102] Exemplarily, the static electricity in the operator can be transmitted to the grounding member 31 via the handle 62, the tank body 61, the clamping portion 323, the first segment first grounding line 321a, the detection feedback device 322 and the second segment first grounding line 321b of the transfer tank 60.

[0103] Exemplarily, the static electricity in the operator can be transmitted to the grounding member 31 via the handle 62, the tank body 61, the junction box 64, the connector 343 and the third grounding line 341 of the transfer tank 60.

[0104] In some optional embodiments, referring to FIG. 2, the third grounding line 34 includes the third grounding line 341 and the power line 342, and the third grounding line 341 and the power line 342 are connected to the connector 343 which is used to be connected to the transfer tank 60.

[0105] Optionally, the transfer tank 60 can further include the junction box 64, and the third grounding line 34 and the power line 342 can be connected to the connector 343 which is connected to the junction box 64. Optionally, the grounding box can include the explosion-proof junction box 64.

[0106] Optionally, the transfer tank 60 can further include the electrical element, and the power line 342 can provide the 24VDC direct-current safety voltage to the electrical element.

[0107] Optionally, the connector 343 includes the explosion-proof aviation plug.

[0108] Optionally, the connector 343 can include the grounding wire 343a, the third grounding line 34 is connected to the grounding wire 343a in the connector 343, and the grounding wire 343a in the connector 343 is connected to the grounding line in the junction box 64.

[0109] The embodiments of the present application have the advantages that the connection mode of the third grounding line 341 and the transfer tank 60 is simplified, and the information in the transfer tank 60 can be transmitted to the stirring device in real time after the transfer tank 60 is powered on, so that the stirring device can determine whether to deliver the slurry according to the information in the transfer tank 60, thereby realizing the electrical control safety interlocking.

[0110] In a second aspect, the embodiments of the present application provide a battery production system, which includes the transfer tank 60 and the stirring device in any of the foregoing embodiments, and the stirring device is connected to the transfer tank 60 through the material delivery pipe 20.

[0111] FIG. 4 is a schematic diagram of a battery production system according to an embodiment of the present application.

[0112] Optionally, as shown in FIG. 2 and FIG. 4, after the transfer tank 60 is moved to the receiving position of the mixing plant, the moving wheels 63 of the transfer tank 60 are fixed. The delivery pipe 20 of the mixing tank 10 and the docking device 65 of the transfer tank 60 are docked. After the docking is completed, the tank body 61 of the transfer tank 60 is clamped by the clamping part 323. Since the mixing tank 10 is connected through the second grounding line 33 and the grounding part 31, the mixing tank 10 and the transfer tank 60 form an equipotential grounding. The connector 343 in the third grounding line 34 and the junction box 64 in the transfer tank 60 are docked, so that the transfer tank 60 is connected to the mixing tank 10 through the third grounding line 34 to achieve equipotential grounding, and the electrical elements on the transfer tank 60 are in communication with the mixing tank 10. At this time, the detection feedback device 322 detects whether the first grounding line 32 is grounded. When it is qualified, the control valve 40 is opened to allow the slurry in the mixing tank 10 to be transported into the transfer tank 60. When the grounding is unqualified, the detection feedback device 322 can issue an alarm prompt. And the controller 50 controls the control valve 40 to be closed, so that the slurry in the mixing tank 10 cannot be transported into the transfer tank 60 through the delivery pipe 20. And when the grounding is unqualified, the operator can adjust the clamping of the transfer tank 60 by adjusting the clamping part 323 to adjust the grounding conductivity until the grounding is qualified. It can be understood that the process of transporting the slurry from the mixing tank 10 to the transfer tank 60 can be a slurry transfer process.

[0113] Optionally, the mixing device can also include a material discharging button. After the operator observes that the grounding is qualified, the operator can manually open the slurry transportation by opening the material discharging button. When the slurry transportation is completed, the operator separates the delivery pipe 20 and the transfer tank 60, and disconnects the connector 343 of the third grounding line 34 and the clamping part 323 of the first grounding line 32. At this time, the transfer tank 60 can be pushed away from the mixing plant by the operator.

[0114] Optionally, the alarm prompt can include an audible and visual alarm prompt.

[0115] In some optional embodiments, the transfer tank 60 includes at least one of a pressure detection part, a weight detection part, a gas detection part, and a liquid level detection part. The detection part can feedback whether the slurry transportation is completed, thereby reducing the possibility that the slurry in the transfer tank 60 exceeds the capacity and causes the transfer tank 60 to be unable to normally store the slurry.

[0116] Optionally, the transfer tank 60 can include only one of the pressure detection part, the weight detection part, the gas detection part, and the liquid level detection part. The transfer tank 60 can also include several combinations of the pressure detection part, the weight detection part, the gas detection part, and the liquid level detection part. The transfer tank 60 can also include the pressure detection part, the weight detection part, the gas detection part, and the liquid level detection part.

[0117] In some optional embodiments, referring to FIGS. 2 and 3, the stirring device comprises a controller 50 and a control valve 40, the transfer tank 60 comprises a pressure detection component, a weight detection component, and a liquid level detection component, all of which are in communication with the controller 50, and when the detection information of any one of the pressure detection component, the weight detection component, and the liquid level detection component exceeds a preset range, the controller 50 is configured to control the control valve 40 to be closed.

[0118] For example, during the delivery of the slurry, the pressure detection component, the weight detection component, and the liquid level detection component detect information in real time and feed the detected information to the controller 50. When the detection information of any one of the pressure detection component, the weight detection component, and the liquid level detection component exceeds a preset range, the controller 50 controls the control valve 40 to be closed, thereby interrupting the delivery of the slurry, and an alarm can also be sent to remind the operator. Optionally, the battery production system can further comprise a human-machine interface (HMI), which can record the alarm information.

[0119] According to the above arrangement, when the slurry exceeds a preset weight, the slurry exceeds a preset liquid level, or the pressure received by the transfer tank 60 exceeds a preset pressure, the delivery of the slurry is interrupted, thereby reducing the possibility that the requirements for exceeding the storage of the transfer tank 60 cause the transfer tank to be unable to normally store the slurry.

[0120] In some optional embodiments, referring to FIG. 2, the stirring device further comprises a controller 50, the battery production system comprises a gas storage tank, the transfer tank 60 comprises a gas detection component, both the gas detection component and the gas storage tank are in communication with the controller 50, the gas storage tank is connected to the transfer tank 60, and when the detection information of the gas detection component exceeds a preset range, the controller 50 is configured to control the gas storage tank to be opened.

[0121] Optionally, the gas storage tank can store inert gas, for example, nitrogen.

[0122] Optionally, the gas detection component can detect the oxygen concentration in the transfer tank 60.

[0123] Optionally, the transfer tank 60 can further comprise an exhaust valve 66, which can exhaust the gas in the transfer tank 60.

[0124] In the embodiments of the present application, when the oxygen concentration detected by the gas detection component exceeds a preset range, the gas storage tank can be controlled to be opened, so that the inert gas is delivered into the transfer tank 60, thereby causing the oxygen in the transfer tank to be exhausted, and further reducing the oxygen concentration in the transfer tank 60, thereby reducing the risk of explosion of the transfer tank 60 caused by the excessively high oxygen concentration in the transfer tank.

[0125] Optionally, the delivery of the slurry can be interrupted before the gas storage tank is opened. Of course, the oxygen concentration in the transfer tank 60 can be detected in real time during the delivery of the slurry, and the gas storage tank can be opened while the slurry is being delivered when the oxygen concentration exceeds the preset range.

[0126] According to some embodiments of the present application, referring to FIG. 2 and FIG. 3, the stirring device includes a stirring tank 10, a delivery pipe 20, and a grounding mechanism 30. The stirring tank 10 is used to stir the slurry. The delivery pipe 20 is connected to the stirring tank 10 and is used to be connected to an external transfer tank 60. The grounding mechanism 30 includes a grounding piece 31, a first grounding line 32, and a second grounding line 33. The first grounding line 32 is used to be connected to the transfer tank 60, and the second grounding line 33 is connected to the stirring tank 10. The first grounding line 32 and the second grounding line 33 are both connected to the grounding piece 31.

[0127] The first grounding line 32 includes a detection feedback device 322 and a first grounding line 321. The detection feedback device 322 is connected in series between the transfer tank 60 and the grounding piece 31 through the second grounding line 331. The stirring device further includes a controller 50 and a control valve 40. The controller is in communication with the detection feedback device 322, and the controller 50 is used to control the opening and closing of the control valve 40, which is used to control whether the delivery pipe 20 is connected or not. The first grounding line 32 further includes a clamping part 323, which is connected to the first grounding line 321 and is used to clamp the transfer tank 60. The first grounding line 32 further includes a plurality of sub-connection lines 324, and the first grounding line 321 is connected to the grounding piece 31 through the plurality of sub-connection lines 324.

[0128] The second grounding line 33 includes a plurality of second grounding lines 331, which are connected to the stirring tank 10.

[0129] The grounding mechanism 30 further includes a third grounding line 34, which includes a third grounding line, a power line 342, and a joint 343. The third grounding line 341 and the power line 342 are both connected to the joint 343, which is used to be connected to the transfer tank 60. The transfer tank includes a pressure detection device, a weight detection device, a gas detection device, and a liquid level detection device.

[0130] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A stirring device, wherein, The mixing device comprises: a mixing tank for mixing slurry; a delivery pipe connected to the mixing tank, the delivery pipe being used for connecting to an external transfer tank; a grounding mechanism comprising a grounding member, a first grounding line and a second grounding line, the first grounding line being used for connecting to the transfer tank, the second grounding line being connected to the mixing tank, and the first grounding line and the second grounding line both being connected to the grounding member.

2. The stirring device of claim 1, wherein, The first grounding line comprises a detection feedback and a first grounding wire, the detection feedback being connected in series between the transfer tank and the grounding member through the first grounding wire.

3. The stirring device of claim 2, wherein, The mixing device further comprises a controller and a control valve, the controller being in communication with the detection feedback, and the controller being used for controlling the control valve to open or close, and the control valve being used for controlling whether the delivery pipe is in communication or not.

4. The stirring device of claim 2, wherein, The first grounding line further comprises a clamping part, the clamping part being connected to the first grounding wire, and the clamping part being used for clamping the transfer tank.

5. The stirring device of claim 2, wherein, The first grounding line further comprises a plurality of sub-connection wires, and the first grounding wire is connected to the grounding member through the plurality of sub-connection wires.

6. The stirring device of claim 1, wherein, The second grounding line comprises a plurality of second grounding wires, and the plurality of second grounding wires are connected to the mixing tank.

7. The stirring device of claim 1, wherein, The grounding mechanism further comprises a third grounding line, the third grounding line being connected to the grounding member, and the third grounding line being used for connecting to the transfer tank.

8. The stirring device of claim 7, wherein, The third grounding line comprises a third grounding wire, a power wire and a connector, the third grounding wire and the power wire being connected to the connector, and the connector being used for connecting to the transfer tank.

9. A battery production system, wherein, The mixing device comprises: a transfer tank; the mixing device according to any one of claims 1 to 8, the mixing device being connected to the transfer tank through the delivery pipe.

10. The battery production system according to claim 9, wherein, The transfer tank comprises at least one of a pressure detection member, a weight detection member, a gas detection member and a liquid level detection member.

11. The battery production system of claim 9, wherein, The mixing device comprises a controller and a control valve, the transfer tank comprises a pressure detection member, a weight detection member and a liquid level detection member, the pressure detection member, the weight detection member and the liquid level detection member all being in communication with the controller, and the controller being used for controlling the control valve to close when detection information of any one of the pressure detection member, the weight detection member and the liquid level detection member exceeds a preset range.

12. The battery production system of claim 9, wherein, The mixing device further comprises a controller, the battery production system comprises a gas storage tank, the transfer tank comprises a gas detection member, the gas detection member and the gas storage tank both being in communication with the controller, the gas storage tank being connected to the transfer tank, and the controller being used for controlling the gas storage tank to open when detection information of the gas detection member exceeds a preset range.

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