Stirring device and battery production system

Abstract

The utility model provides a stirring device and a battery production system. The stirring device comprises a stirring tank, a material conveying pipe and a grounding mechanism, the stirring tank is used for stirring slurry. The material conveying pipe is connected to the stirring tank and is used for being connected to an external transfer tank. The grounding mechanism comprises a grounding piece, a first grounding line and a second grounding line, the first grounding line is used for being connected 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 with the grounding piece. The risk of safety accidents in the production process can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a stirring device and a battery production system. Background Art

[0002] Battery cells are widely used in electronic devices, such as mobile phones, laptop computers, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. Battery cells can include nickel-cadmium battery cells, nickel-hydrogen battery cells, lithium-ion battery cells, and secondary alkaline zinc-manganese battery cells, etc.

[0003] In the development of battery technology, how to reduce the risk of safety accidents during the production process has always been a research direction in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a stirring device and a battery production system, which can reduce the risk of safety accidents during the production process.

[0005] In a first aspect, the present application provides a stirring device. The stirring device includes a stirring tank, a feed pipe, and a grounding mechanism. The stirring tank is used to stir the slurry. The feed pipe is connected to the stirring tank, and the feed pipe is used to connect to an external transfer tank. The grounding mechanism includes a grounding member, a first grounding line, and a second grounding line, the first grounding line is used to connect 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.

[0006] In the above scheme, by connecting both the stirring tank and the transfer tank to the same grounding piece, the stirring tank and the transfer tank form equipotential grounding when the transfer tank is moved to the area where the stirring tank is located, thereby reducing the potential difference between the transfer tank and the stirring tank, thereby reducing the generation of static electricity, and reducing the risk of safety accidents caused by static electricity fires and explosions during the production process.

[0007] In some embodiments, the first grounding circuit includes a detection feedback device and a first grounding wire, and the detection feedback device is connected in series between the transfer tank and the grounding member through the first grounding wire.

[0008] In the above scheme, a detection feedback device is set to detect whether the grounding line between the transfer tank and the grounding piece is connected, so as to reduce the risk of static electricity fire caused by failure of the first grounding line, thereby reducing the risk of safety accidents caused by explosion due to static electricity fire.

[0009] In some embodiments, the stirring device further includes a controller and a control valve. The controller communicates with the detection feedback device. The controller is used to control the switch of the control valve. The control valve is used to control whether the feed pipe is connected or not.

[0010] In the above scheme, by setting the controller and the control valve, when the detection feedback device detects that the first grounding line is abnormal, the detection feedback device feeds back the abnormal information to the controller, and the controller controls the control valve to close. When the detection feedback device detects that the first grounding line is in normal use, the detection feedback device feeds back the normal use information of the first grounding line to the controller, and the controller controls the control valve to open the box. The above process can be carried out after the first grounding line and the transfer tank are connected, or the information of the first grounding line can be detected in real time during the slurry transportation process. The controller controls the control valve according to the real-time detected information, so that the grounding signal and the slurry transportation are interlocked, reducing the possibility of static electricity fire caused by the abnormality of the first grounding line during the slurry transportation process, thereby reducing the possibility of safety accidents during the production process.

[0011] In some embodiments, the first grounding circuit also includes a clamping portion, which is connected to the first grounding line and is used to clamp the transfer tank.

[0012] In the above scheme, by providing a clamping part, the connection method between the first grounding line and the transfer tank is simplified, and the contact area between the first grounding line and the transfer tank can be increased by clamping, thereby reducing the impedance and the possibility of poor contact.

[0013] In some embodiments, the first grounding line further includes a plurality of sub-connection lines, and the first grounding line is connected to the grounding member through the plurality of sub-connection lines.

[0014] In the above solution, multiple sub-connection lines are provided 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 in the production process.

[0015] In some embodiments, the second grounding circuit includes a plurality of second grounding wires, and the plurality of second grounding wires are connected to the stirring tank.

[0016] In the above scheme, multiple second grounding wires are provided to achieve multi-point grounding of the stirring tank, thereby reducing the overall impedance of the second grounding line, improving signal stability, and improving anti-interference capability.

[0017] In some embodiments, the grounding mechanism further includes a third grounding line, the third grounding line is connected to the grounding member, and the third grounding line is used to connect to the transfer tank.

[0018] In the above scheme, the first grounding line and the third grounding line are both connected to the grounding piece, and the first grounding line and the third grounding line are both used to connect to the transfer tank, thereby realizing multi-point grounding of the transfer tank, thereby reducing the overall impedance of the second grounding line, improving signal stability, and improving anti-interference ability.

[0019] In some embodiments, the third grounding circuit includes a third grounding wire, a power line, and a connector. The third grounding wire and the power line are both connected to the connector, and the connector is used to connect to the transfer tank.

[0020] In the above scheme, it is helpful to simplify the connection method between the third grounding wire and the transfer tank, and after the transfer tank is powered on, the information in the transfer tank can be transmitted to the stirring device in real time. The stirring device can determine whether to transport the slurry based on the information in the transfer tank to achieve electrical control safety interlock.

[0021] In a second aspect, an embodiment of the present application provides a battery production system, comprising a transfer tank and a stirring device in any of the aforementioned embodiments, wherein the stirring device is connected to the transfer tank via a feed pipe.

[0022] In some embodiments, the transfer tank includes at least one of a pressure detector, a weight detector, a gas detector, and a liquid level detector, which can provide feedback on whether the slurry delivery is completed, thereby reducing the possibility that the transfer tank cannot store the slurry normally due to excessive slurry in the transfer tank.

[0023] In some embodiments, the stirring device includes a controller and a control valve, and the transfer tank includes a pressure detection element, a weight detection element and a liquid level detection element. The pressure detection element, the weight detection element and the liquid level detection element all communicate with the controller. When the detection information of any one of the pressure detection element, the weight detection element and the liquid level detection element exceeds a preset range, the controller is used to control the control valve to close.

[0024] In the above scheme, when the slurry exceeds the preset weight, the slurry exceeds the preset liquid level, or the pressure on the transfer tank exceeds the preset pressure, the slurry delivery is interrupted to reduce the possibility that the transfer tank cannot store the slurry normally due to exceeding the storage requirements of the transfer tank.

[0025] In some embodiments, the stirring device also includes a controller, the battery production system includes a gas storage tank, the transfer tank includes a gas detection element, the gas detection element and the gas storage tank both communicate with the controller, the gas storage tank is connected to the transfer tank, and when the detection information of the gas detection element exceeds a preset range, the controller is used to control the opening of the gas storage tank.

[0026] In the above scheme, when the oxygen concentration detected by the gas detection component exceeds the preset range, the gas storage tank can be controlled to open so that the inert gas can be delivered to the transfer tank, thereby discharging the oxygen in the transfer tank, thereby reducing the oxygen concentration in the transfer tank and reducing the risk of explosion of the transfer tank due to excessive oxygen concentration in the transfer tank.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 is a schematic diagram of a battery production system provided in an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of another battery production system provided in an embodiment of the present application;

[0031] Figure 3 It is a structural schematic diagram of a stirring device provided in an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of a battery production system provided in an embodiment of the present application.

[0033] Marking Description

[0034] 10. Mixing tank; 20. Feed pipe;

[0035] 30. Grounding mechanism; 31. Grounding member; 32. First grounding circuit; 321. First grounding wire; 321a. First section of first grounding wire; 321b. Second section of first grounding wire; 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 wires; 33. Second grounding circuit; 331. Second grounding wire; 34. Third grounding circuit; 341. Third grounding wire; 342. Power line; 343. Connector; 343a. Grounding trace;

[0036] 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

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill 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.

[0045] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0046] 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 storage battery, etc., which is not limited in the embodiments of the present application.

[0047] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0048] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0049] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0050] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium with silver surface treatment may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0051] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0052] As an example, the negative electrode current collector may be a metal foil, a foamed metal, a foamed carbon or a composite current collector. For example, as the metal foil, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium with silver surface treatment may be used. The foamed metal may be a foamed nickel, a foamed copper, a foamed aluminum or a foamed alloy. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0053] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0054] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0055] As an example, the negative electrode active material may adopt the negative electrode active material for battery cells known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc.

[0056] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0057] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0058] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0059] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0060] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0061] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0062] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0063] In some embodiments, the battery device may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0064] With the continuous development of battery cells, battery cells are not only used in energy storage power systems such as hydropower, thermal, wind and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields, resulting in explosive growth in the demand for battery cells.

[0065] Battery slurry is an important material for forming battery cells. The quality of battery slurry applied on the positive and negative electrode current collectors (aluminum foil / copper foil) directly affects the performance of the battery cells.

[0066] In the production process of batteries, the battery slurry is required to be used for the slurry coating process. The battery slurry is prepared and stored in the mixing tank and transported to the preparation site of the slurry coating process via the transfer tank.

[0067] Since there is powder in the preparation process of battery slurry, a lot of dust will be raised in the area where the mixing tank is located during the mixing process. During the transportation process, the staff is required to push the transfer tank to the area where the mixing tank is located. The mixing tank will generate static electricity during the movement, which will cause the risk of static electricity fire and explosion during the transportation process.

[0068] Based on the above technical problems, the present application provides a technical solution, by connecting both the stirring tank and the transfer tank to the same grounding piece, so that when the transfer tank is moved 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 then reducing the generation of static electricity, and reducing the risk of safety accidents caused by static electricity fires and explosions during the production process.

[0069] Figure 1 It is a schematic diagram of a battery production system provided in an embodiment of the present application.

[0070] See also Figure 1 The embodiment of the present application provides a stirring device, which includes a stirring tank 10, a feed pipe 20 and a grounding mechanism 30. The stirring tank 10 is used to stir the slurry. The feed pipe 20 is connected to the stirring tank 10, and the feed pipe 20 is used to connect 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 connect 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.

[0071] Optionally, the production process of the battery may include pulping, coating, cold pressing, slitting, winding, packaging, liquid injection, formation and other processes, wherein pulping is the first process in the battery production process, and its purpose is to disperse the active material powder, conductive agent powder, dispersant / binder powder or solution in the solvent to form a uniform and stable suspension. The uniformity of dispersion of each component in the suspension has a direct impact on subsequent coating processes, drying processes, cold pressing and slitting processes. The stirring tank 10, as an important equipment in the pulping process, can stir the suspension into shape. Optionally, the slurry may include battery slurry, and the battery slurry may be a shaped suspension.

[0072] The slurry in the mixing tank 10 can be transported to the transfer tank 60 through the feed 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 device such as a pressure relief valve can be provided on the feed pipe 20 to reduce the possibility of the feed pipe 20 rupture.

[0073] Optionally, the grounding member 31 may be a grounding busbar, for example, the area where the stirring device is located is a stirring workshop, and the grounding member 31 may be connected to a grounding line in the stirring workshop. Alternatively, the grounding member 31 may serve as a grounding busbar of the stirring workshop.

[0074] 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 to connect to the transfer tank 60 .

[0075] 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 .

[0076] Optionally, the transfer tank 60 may include a cart and a tank body 61 disposed on the cart, and the cart may include a handle 62 and a moving wheel 63, and the staff may push the cart through the handle 62 to drive the tank body 61 to move. The moving wheel 63 can drive the cart and the tank body 61 on the cart to move. When the transfer tank 60 moves to the mixing workshop to prepare for receiving materials, the transfer tank 60 is moved to a predetermined position in the mixing workshop and the moving wheel 63 is fixed. The feed pipe 20 is docked to the transfer tank 60. The first grounding line 32 is connected to the transfer tank 60 to achieve the equipotential grounding setting of the transfer tank 60 and the mixing tank 10.

[0077] In the technical solution of the embodiment of the present application, by connecting both the stirring tank 10 and the transfer tank 60 to the same grounding piece 31, the stirring tank 10 and the transfer tank 60 form equipotential grounding when the transfer tank 60 moves to the area where the stirring tank 10 is located, thereby reducing the potential difference between the transfer tank 60 and the stirring tank 10, thereby reducing the generation of static electricity, and reducing the risk of safety accidents caused by static electricity fires and explosions during the production process.

[0078] In some optional embodiments, see Figure 2 The first grounding circuit 32 includes a detection feedback device 322 and a first grounding wire 321 , and the detection feedback device 322 is connected in series between the transfer tank 60 and the grounding member 31 through the first grounding wire 321 .

[0079] Optionally, the first grounding wire 321 may include a first section and a second section, the detection feedback device 322 and the transfer tank 60 are connected via the first section of the first grounding wire 321a, and the detection feedback device 322 and the grounding member 31 are connected via the second section of the first grounding wire 321b.

[0080] In these optional embodiments, a detection feedback device 322 is provided 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 electrostatic fire caused by failure of the first grounding line 32, thereby reducing the risk of safety accidents caused by explosions caused by electrostatic fires.

[0081] Figure 2 It is a schematic diagram of another battery production system provided in an embodiment of the present application. Figure 3 It is a structural schematic diagram of a stirring device provided in an embodiment of the present application.

[0082] In some optional embodiments, see Figure 2 and Figure 3The stirring device further includes a controller 50 and a control valve 40. The controller 50 communicates with the detection feedback device 322. The controller 50 is used to control the switch of the control valve 40. The control valve 40 is used to control whether the feed pipe 20 is connected or not.

[0083] Exemplarily, the detection feedback device 322 may include a first connection terminal 322a, a second connection terminal 322b, a third connection terminal 322c and a fourth connection terminal 322d, wherein the first connection terminal 322a is used to connect to the transfer tank 60 through the first section of the first grounding wire 321a, the second connection terminal 322b is connected to the grounding member 31 through the second section of the first grounding wire 321b, the third connection terminal 322c is connected to the controller 50 to realize the communication between the detection feedback device 322 and the controller 50, and the fourth connection terminal 322d is used to connect to the power supply 70. Optionally, the power supply 70 is used to provide voltage for the detection feedback device 322.

[0084] The control valve 40 is used to control whether the feed pipe 20 is connected. It can be understood that when the control valve 40 is opened, the slurry in the mixing tank 10 can be transported to the transfer tank 60 through the feed pipe 20, and when the control valve 40 is closed, the slurry in the mixing tank 10 cannot be transported to the transfer tank 60 through the feed pipe 20.

[0085] In the embodiment of the present application, by setting 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 close. 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 normal use information of the first grounding line 32 to the controller 50, and the controller 50 controls the control valve 40 to open the frame. The above process can be performed after the first grounding line 32 and the transfer tank 60 are connected, 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 real-time detected information, so that the grounding signal and the slurry conveying are interlocked, reducing the possibility of static electricity fire caused by the abnormality of the first grounding line 32 during the slurry conveying process, thereby reducing the possibility of safety accidents during the production process.

[0086] Optionally, when the detection feedback device 322 detects abnormal information of the first grounding line 32 , the detection feedback device 322 may also prompt the operator or the controller 50 by way of an alarm.

[0087] In some optional embodiments, see Figure 2 The first grounding line 32 also includes a clamping portion 323 , which is connected to the first grounding line 321 , and the clamping portion 323 is used to clamp the transfer tank 60 .

[0088] Optionally, the clamping portion 323 may include a grounding clamp, the transfer tank 60 may include a protrusion, and the clamping portion 323 may be clamped on the protrusion. Optionally, the clamping portion 323 and the grounding clamp may both be made of conductive materials.

[0089] The embodiment of the present application simplifies the connection method between the first grounding line 32 and the transfer tank 60 by providing a clamping portion 323. In addition, the contact area between the first grounding line 32 and the transfer tank 60 can be increased by clamping, thereby reducing impedance and reducing the possibility of poor contact.

[0090] In some optional embodiments, see Figure 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 .

[0091] Exemplarily, the grounding member 31 includes a plurality of grounding interfaces, a plurality of sub-connection lines 324 are connected to the plurality of grounding interfaces in a one-to-one correspondence, and one end of the first grounding line 321 is connected to the plurality of sub-connection lines 324 .

[0092] In the embodiment of the present application, a plurality of sub-connection lines 324 are provided 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 during the production process.

[0093] In some optional embodiments, see Figure 2 The second grounding circuit 33 includes a plurality of second grounding wires 331 , and the plurality of second grounding wires 331 are connected to the stirring tank 10 .

[0094] Exemplarily, the plurality of second grounding wires 331 may be respectively connected to different positions of the stirring tank 10. For example, the plurality of second grounding wires 331 are respectively connected to different side walls of the stirring tank 10.

[0095] The embodiment of the present application provides a plurality of second grounding lines 331 to achieve multi-point grounding of the stirring tank 10 , thereby reducing the overall impedance of the second grounding line 33 , improving signal stability, and improving anti-interference capability.

[0096] In some optional embodiments, see Figure 2 The grounding mechanism 30 also includes a third grounding line 34, which is connected to the grounding member 31, and the third grounding line 34 is used to connect to the transfer tank 60.

[0097] In the embodiment of the present application, the first grounding line 32 and the third grounding line 34 are both connected to the grounding piece 31, and the first grounding line 32 and the third grounding line 34 are both used to connect to the transfer tank 60, thereby realizing multi-point grounding of the transfer tank 60, thereby reducing the overall impedance of the second grounding line 33, improving signal stability, and improving anti-interference ability.

[0098] Optionally, both the first grounding line 32 and the third grounding line 34 can discharge static electricity carried by the operator.

[0099] Exemplarily, static electricity in the operator can be transmitted to the grounding member 31 via the handle 62 of the transfer tank 60, the tank body 61, the clamping portion 323, the first section of the first grounding wire 321a, the detection feedback device 322, and the second section of the first grounding wire 321b.

[0100] Exemplarily, static electricity in the operator can be transferred to the grounding member 31 via the handle 62 of the transfer tank 60 , the tank body 61 , the junction box 64 , the connector 343 , and the third grounding wire 341 .

[0101] In some optional embodiments, see Figure 2 The third grounding line 34 includes a third grounding wire, a power line 342 and a connector 343. The third grounding wire 341 and the power line 342 are both connected to the connector 343, and the connector is used to connect to the transfer tank 60.

[0102] Optionally, the transfer tank 60 may further include a junction box 64, and the third grounding line 34 and the power line 342 may be connected to a connector 343, and the connector is connected to the junction box 64. Optionally, the grounding box may include an explosion-proof junction box 64.

[0103] Optionally, the transfer tank 60 may also include electrical components, and the power line 342 may provide a DC safety voltage of 24VDC to the electrical components.

[0104] Optionally, the connector 343 includes an explosion-proof aviation plug.

[0105] Optionally, the connector 343 may include a grounding wire 343 a , the third grounding line 34 is connected to the grounding wire 343 a in the connector 343 , and the grounding wire 343 a in the connector 343 is connected to a grounding line in the junction box 64 .

[0106] The above-mentioned arrangement in the embodiment of the present application is conducive to simplifying the connection method between the third grounding wire 341 and the transfer tank 60, and after the transfer tank 60 is powered on, the information in the transfer tank 60 can be transmitted to the stirring device in real time. The stirring device can determine whether to transport the slurry based on the information in the transfer tank 60 to achieve electrical control safety interlock.

[0107] In a second aspect, an embodiment of the present application provides a battery production system, including a transfer tank 60 and a stirring device in any of the aforementioned embodiments, wherein the stirring device is connected to the transfer tank 60 via a feed pipe 20 .

[0108] Figure 4 It is a schematic diagram of a battery production system provided in an embodiment of the present application.

[0109] Alternatively, if Figure 2 and Figure 4 As shown, after the transfer tank 60 moves to the material receiving position of the mixing workshop, the moving wheel 63 of the transfer tank 60 is fixed. The feed pipe 20 of the mixing tank 10 is docked with the docking device 65 of the transfer tank 60. 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 to the grounding member 31 through the second grounding line 33, the mixing tank 10 and the transfer tank 60 form an equipotential grounding. In addition, the connector 343 in the third grounding line 34 is docked with the junction box 64 in the transfer tank 60, so that the transfer tank 60 is equipotentially grounded with the mixing tank 10 through the third grounding line 34, so that the electrical components on the transfer tank 60 communicate with the mixing tank 10. At this time, the detection feedback device 322 detects whether the first grounding line 32 is grounded. If qualified, the control valve 40 is opened to allow the slurry in the mixing tank 10 to be transported to 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 close, so that the slurry in the mixing tank 10 cannot be transported to the transfer tank 60 through the feed pipe 20. And, when the grounding is not qualified, the operator can adjust the grounding conductivity by adjusting the clamping of the clamping part 323 on the transfer tank 60 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.

[0110] Optionally, the stirring device may further include a material button, and the operator may manually start the slurry delivery by turning on the material button after observing that the grounding is qualified. After the slurry delivery is completed, the operator separates the material delivery pipe 20 and the transfer tank 60, and disassembles the joint 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 leave the stirring workshop under the push of the operator.

[0111] Optionally, the alarm prompt may include an audible or visual alarm prompt.

[0112] In some optional embodiments, the transfer tank 60 includes at least one of a pressure detector, a weight detector, a gas detector and a liquid level detector, which can provide feedback on whether the slurry transportation is completed, thereby reducing the possibility that the transfer tank 60 cannot store the slurry normally due to excessive slurry in the transfer tank 60.

[0113] Optionally, the transfer tank 60 may include only one of the pressure detection component, the weight detection component, the gas detection component and the liquid level detection component. The transfer tank 60 may also include a combination of the pressure detection component, the weight detection component, the gas detection component and the liquid level detection component. The transfer tank 60 may also include the pressure detection component, the weight detection component, the gas detection component and the liquid level detection component.

[0114] In some optional embodiments, see Figure 2 and Figure 3 The stirring device includes a controller 50 and a control valve 40, and the transfer tank 60 includes a pressure detection component, a weight detection component and a liquid level detection component. The pressure detection component, the weight detection component and the liquid level detection component all communicate with 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 is used to control the control valve 40 to close.

[0115] Exemplarily, during the slurry conveying process, the pressure detection component, the weight detection component and the liquid level detection component detect in real time and feed back 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 the preset range, the controller 50 controls the control valve 40 to close, thereby interrupting the slurry conveying, and can also issue an alarm prompt to remind the operator. Optionally, the battery production system can also include a human-machine interface (HMI), which can record the alarm information.

[0116] Through the above-mentioned arrangement, the embodiment of the present application interrupts the delivery of the slurry when the slurry exceeds a preset weight, the slurry exceeds a preset liquid level, or the pressure on the transfer tank 60 exceeds a preset pressure, so as to reduce the possibility that the transfer tank 60 cannot store the slurry normally due to exceeding the storage requirements.

[0117] In some optional embodiments, see Figure 2 The stirring device also includes a controller 50, the battery production system includes a gas storage tank, and the transfer tank 60 includes a gas detection component. The gas detection component and the gas storage tank both communicate with the controller 50. The gas storage tank is connected to the transfer tank 60. When the detection information of the gas detection component exceeds a preset range, the controller 50 is used to control the opening of the gas storage tank.

[0118] Optionally, the gas storage tank may store an inert gas, such as nitrogen.

[0119] Optionally, the gas detection element can detect the oxygen concentration in the transfer tank 60.

[0120] Optionally, the transfer tank 60 may further include an exhaust valve 66 , which may exhaust the gas in the transfer tank 60 .

[0121] In an embodiment 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 open so that the inert gas can be delivered to the transfer tank 60, thereby discharging the oxygen in the transfer tank, thereby reducing the oxygen concentration in the transfer tank 60 and reducing the risk of explosion of the transfer tank 60 due to excessive oxygen concentration in the transfer tank.

[0122] Optionally, the slurry delivery can be interrupted before the gas storage tank is opened. Of course, the gas detection element can also detect the oxygen concentration in the transfer tank 60 in real time during the slurry delivery process. When the oxygen concentration exceeds a preset range, the slurry is delivered while the gas storage tank is opened.

[0123] According to some embodiments of the present application, please refer to Figure 2 and Figure 3 The stirring device includes a stirring tank 10, a feed pipe 20 and a grounding mechanism 30. The stirring tank 10 is used to stir the slurry. The feed pipe 20 is connected to the stirring tank 10, and the feed pipe is used to connect to the 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 connect 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 connected to the grounding piece 31.

[0124] The first grounding circuit 32 includes a detection feedback device 322 and a first grounding wire 321, and the detection feedback device 322 is connected in series between the transfer tank 60 and the grounding member 31 through the second grounding wire 331. The stirring device also includes a controller 50 and a control valve 40, the controller communicates with the detection feedback device 322, the controller 50 is used to control the switch of the control valve 40, and the control valve is used to control whether the conveying pipe 20 is connected. The first grounding circuit 32 also includes a clamping portion 323, the clamping portion is connected to the first grounding wire 321, and the clamping portion 323 is used to clamp the transfer tank 60. The first grounding circuit 32 also includes a plurality of sub-connecting wires 324, and the first grounding wire 321 is connected to the grounding member 31 through the plurality of sub-connecting wires 324.

[0125] The second grounding circuit 33 includes a plurality of second grounding wires 331 , and the plurality of second grounding wires are connected to the stirring tank 10 .

[0126] The grounding mechanism 30 further includes a third grounding circuit 34, the third grounding circuit 341 includes a third grounding wire, a power line 342 and a connector 343, the third grounding wire 341 and the power line 342 are both connected to the connector 343, and the connector is used to connect to the transfer tank 60. The transfer tank includes a pressure detection component, a weight detection component, a gas detection component and a liquid level detection component.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A stirring device, characterized in that: include: A stirring tank, used to stir the slurry; A material delivery pipe connected to the stirring tank, wherein the material delivery pipe is used to be connected to an external transfer tank; The grounding mechanism includes a grounding piece, a first grounding line and a second grounding line, wherein the first grounding line is used to connect to the transfer tank, the second grounding line is connected to the stirring tank, and both the first grounding line and the second grounding line are connected to the grounding piece.

2. The stirring device according to claim 1, characterized in that: The first grounding circuit includes a detection feedback device and a first grounding wire, and the detection feedback device is connected in series between the transfer tank and the grounding member through the first grounding wire.

3. The stirring device according to claim 2, characterized in that: The stirring device also includes a controller and a control valve. The controller communicates with the detection feedback device. The controller is used to control the switch of the control valve. The control valve is used to control whether the material delivery pipe is connected or not.

4. The stirring device according to claim 2, characterized in that: The first grounding circuit also includes a clamping portion, which is connected to the first grounding wire and is used to clamp the transfer tank.

5. The stirring device according to claim 2, characterized in that: The first grounding circuit further includes a plurality of sub-connection lines, and the first grounding line is connected to the grounding member through the plurality of sub-connection lines.

6. The stirring device according to claim 1, characterized in that: The second grounding circuit includes a plurality of second grounding wires, and the plurality of second grounding wires are connected to the stirring tank.

7. The stirring device according to claim 1, characterized in that: The grounding mechanism also includes a third grounding line, which is connected to the grounding member and is used to be connected to the transfer tank.

8. The stirring device according to claim 7, characterized in that: The third grounding circuit includes a third grounding wire, a power line and a connector. The third grounding wire and the power line are both connected to the connector, and the connector is used to be connected to the transfer tank.

9. A battery production system, characterized in that: include: Transfer tank; The stirring device according to any one of claims 1 to 8 is connected to the transfer tank through the feed pipe.

10. The battery production system according to claim 9, characterized in that: The transfer tank includes at least one of a pressure detection component, a weight detection component, a gas detection component and a liquid level detection component.

11. The battery production system according to claim 9, characterized in that: The stirring device includes a controller and a control valve, and the transfer tank includes a pressure detection component, a weight detection component and a liquid level detection component. The pressure detection component, the weight detection component and the liquid level detection component all communicate with the controller. 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 is used to control the control valve to close.

12. The battery production system according to claim 9, characterized in that: The stirring device also includes a controller, the battery production system includes a gas storage tank, the transfer tank includes a gas detection element, the gas detection element and the gas storage tank both communicate with the controller, the gas storage tank is connected to the transfer tank, and when the detection information of the gas detection element exceeds a preset range, the controller is used to control the opening of the gas storage tank.

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