WO2025213645A1 - 浆料输送装置、电池涂布线及浆料输送方法 - Google Patents

浆料输送装置、电池涂布线及浆料输送方法

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Publication number
WO2025213645A1
WO2025213645A1 PCT/CN2024/110067 CN2024110067W WO2025213645A1 WO 2025213645 A1 WO2025213645 A1 WO 2025213645A1 CN 2024110067 W CN2024110067 W CN 2024110067W WO 2025213645 A1 WO2025213645 A1 WO 2025213645A1
Authority
WO
WIPO (PCT)
Prior art keywords
slurry
main channel
main
channel
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/110067
Other languages
English (en)
French (fr)
Other versions
WO2025213645A9 (zh
Inventor
倾亚龙
陈威
彭鹏
郑远添
车欢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of WO2025213645A1 publication Critical patent/WO2025213645A1/zh
Publication of WO2025213645A9 publication Critical patent/WO2025213645A9/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture

Definitions

  • the present disclosure relates to the technical field of battery manufacturing, and in particular to a slurry conveying device, a battery coating line, and a slurry conveying method.
  • New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.
  • the present disclosure provides a slurry conveying device, a battery coating line, and a slurry conveying method that can reduce battery manufacturing costs.
  • a first aspect of the present disclosure provides a slurry conveying device, comprising: a main line; a bypass line connected to the main line; a discharge line, one end of which is connected to one end of the main line and the other end is used to output slurry; wherein the slurry conveying device has a slurry conveying state and a slurry circulation state, in which the main line and the bypass line are not connected, and the main line and the discharge line are connected to convey the slurry conveyed from the feed pipe, and in the slurry circulation state, the main line and the discharge line are not connected, and the main line and the bypass line are connected to form a slurry circulation flow.
  • the main channel includes a first main channel and a second main channel, the first main channel has a first channel opening and a second channel opening, the second main channel has a third channel opening and a fourth channel opening, the first channel opening of the first main channel and the third channel opening of the second main channel are respectively connected to the feed pipe, the second channel opening of the first main channel and the fourth channel opening of the second main channel are respectively connected to the discharge pipe, a first valve is provided between the first main channel and the second main channel, the first valve is used to make the first main channel and the second main channel connected to each other or not connected to each other.
  • the slurry conveying device When it is necessary to convey slurry, the slurry conveying device is put into a slurry conveying state, the main line and the bypass line are disconnected, the main line and the discharge line are connected, and the slurry conveyed from the feed pipe is conveyed; after the slurry conveying is completed, the slurry conveying device is put into a slurry circulation state, the main line and the discharge line are disconnected, the main line and the bypass line are connected to form a circulation loop, and the residual slurry in the main line circulates in the circulation loop.
  • the slurry in the main line is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the slurry conveying device can be put into a slurry circulation state.
  • the connectivity of the pipeline can change the flow direction of the slurry and realize the circulation of the residual slurry. Therefore, the structure of this slurry conveying device is relatively simple and the manufacturing cost of the slurry conveying device is low. That is, the use cost and manufacturing cost of the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the specific structure of the main line allows the main line to form a delivery line when connected to the discharge line, and a circulation loop when connected to the bypass line, thereby enabling switching between the delivery line and the circulation loop.
  • the slurry conveying device has a simple structure and low manufacturing cost.
  • the slurry in the main line is in a flowing state, which can reduce the chance of gelation due to standing still and the number of gel removal operations, thereby reducing the cost of use of the slurry conveying device. In other words, both the cost of use and the cost of manufacturing the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the main line includes a tube body and a partition plate disposed in the tube body, the partition plate divides the channel in the tube body into the first main channel and the second main channel, and the first valve is disposed on the partition plate.
  • a partition plate is used to separate the channel in the tube body into a first main channel and a second main channel, which reduces the number of pipelines, saves costs, has a compact structure, and occupies a small space. Moreover, a first valve is set on the partition plate, and the first main channel and the second main channel can be switched between the connected and non-connected states by opening and closing the first valve.
  • the structure is simple and the switching operation is simple.
  • the slurry conveying device further includes connecting pieces, and the connecting pieces are respectively connected to the main line, the discharge line, and the bypass line.
  • the slurry delivery device has a simple structure and low manufacturing cost.
  • the slurry in the main line is in a fluid state, which reduces the chance of gelling due to standing still and the number of gel removal operations, thereby reducing the cost of using the slurry delivery device. In other words, both the cost of using and manufacturing the slurry delivery device are reduced, thereby reducing the manufacturing cost of the battery.
  • the connecting member has a first port, a second port, a third port, a fourth port and a fifth port, the first port is connected to the second channel port of the first main channel, the second port is connected to the fourth channel port of the second main channel, the third port and the fourth port are respectively connected to the two ends of the bypass pipeline, and the fifth port is connected to the discharge pipeline.
  • the slurry conveying device has a simple structure and low manufacturing cost.
  • the slurry in the main pipeline is in a flowing state, which can reduce the chance of gelation due to standing still and reduce the number of operations required to clear the gel, thereby reducing the cost of use of the slurry conveying device.
  • the cost of use and manufacturing of the slurry conveying device are both reduced, thereby reducing the manufacturing cost of the battery.
  • the first port is connected to the third port and the fifth port
  • the second port is connected to the fourth port and the fifth port
  • the first port and the second port are not connected
  • the third port and the fourth port are not connected.
  • the first and second main channels can each be connected to the discharge pipeline to form a delivery pipeline, or to both ends of the bypass pipeline to form a circulation loop, thereby enabling switching between the delivery pipeline and the circulation loop.
  • the slurry conveying device has a simple structure and low manufacturing cost.
  • the slurry in the main pipeline is in a flowing state, which can reduce the chance of gelation due to standing still and the number of gel removal operations, thereby reducing the cost of use of the slurry conveying device. In other words, both the cost of use and the cost of manufacturing the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the first port and the second port are provided at the same end of the connector.
  • first port and the second port can be directly connected to the first main channel and the second main channel located in the same tube, respectively.
  • the connection structure is simplified, further reducing manufacturing costs.
  • a through hole is formed at one end of the partition plate away from the connecting member, and the first valve is installed in the through hole.
  • the first valve In the slurry conveying state, the first valve is adjusted to a closed state so that the first main channel and the second main channel are not connected to each other.
  • the first valve In the slurry circulation state, the first valve is adjusted to an open state so that the first main channel and the second main channel are connected to each other.
  • the first valve opens or closes to adjust the connection between the first and second main channels, switching between the transport route and the circulation loop. Positioning the first valve on the end of the partition plate away from the connector allows the slurry to flow over a greater distance within the first and second main channels, maintaining a faster flow as much as possible and minimizing the risk of gelling.
  • the slurry conveying device also includes a second valve, which is installed at one end of the discharge pipeline close to the main pipeline.
  • the second valve In the slurry conveying state, the second valve is adjusted to an open state so that the discharge pipeline and the main pipeline are connected. In the slurry circulation state, the second valve is adjusted to a closed state so that the discharge pipeline and the main pipeline are not connected.
  • the second valve allows for adjustment of the connection between the main line and the discharge line, allowing the main line to connect to the discharge line to form a delivery line, or to connect to the bypass line to form a circulation loop, thereby switching between the delivery line and the circulation loop.
  • the slurry conveying device has a simple structure and low manufacturing cost.
  • the slurry in the main line is in a flowing state, which reduces the chance of gelling due to standing still and reduces the number of gel removal operations, thereby reducing the cost of using the slurry conveying device. In other words, both the cost of using and manufacturing the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the end of the discharge pipeline away from the main pipeline extends into the slurry tank.
  • the slurry conveyed from the feed pipeline passes through the main pipeline and the discharge pipeline in sequence and enters the slurry tank.
  • the slurry is transported to the slurry tank for use by the electrode coating device for coating operations.
  • the feed pipe is connected to a first pump.
  • the first pump drives the slurry to flow in the main pipeline and the discharge pipeline;
  • the bypass pipeline is connected to a second pump.
  • the second pump drives the slurry in the circulation loop to circulate in the circulation loop.
  • the first pump provides power for conveying the slurry
  • the second pump provides power for the slurry to circulate in the circulation loop, thereby realizing the flow of the slurry in two states, reducing the probability of gelation due to standing still, and reducing the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the slurry conveying device has a simple structure and low manufacturing cost, that is, the use cost and manufacturing cost of the slurry conveying device are both reduced, thereby reducing the manufacturing cost of the battery.
  • the discharge pipe extends in a vertical direction.
  • the discharge pipeline is set to extend in the vertical direction so that the slurry in the discharge pipeline flows downward under the action of gravity, which is beneficial to saving the energy of the first pump. Moreover, when the slurry is in the circulation state, the slurry in the discharge pipeline is not easy to settle on the inner wall of the discharge pipeline, thereby reducing the chance of gelation.
  • the second aspect of the present disclosure provides a battery coating line, comprising: a slurry preparation device for preparing slurry; the above-mentioned slurry conveying device; a pole piece coating device for coating the slurry on a current collector to form a pole piece; wherein the slurry conveying device is used to convey the slurry prepared by the slurry preparation device to the pole piece coating device.
  • the battery coating line includes the slurry conveying device, the battery coating line includes all the beneficial effects of the slurry conveying device. Therefore, the use cost and manufacturing cost of the battery coating line are reduced, thereby reducing the manufacturing cost of the battery.
  • the third aspect of the present disclosure provides a slurry conveying method, using a slurry conveying device, the slurry conveying device comprising a main line, a bypass line, a A bypass pipeline and a discharge pipeline, wherein the bypass pipeline is connected to the main pipeline, one end of the discharge pipeline is connected to one end of the main pipeline, and the other end is used to output slurry;
  • the slurry conveying method comprises:
  • a slurry conveying step wherein the main line and the bypass line are disconnected, and the main line and the discharge line are connected, and the slurry conveyed from the feed line is conveyed;
  • the slurry circulation step is to disconnect the main line and the discharge line, and connect the main line and the bypass line to form a circulation loop, so that the slurry circulates in the circulation loop.
  • the slurry circulation step is performed when the slurry conveying step is stopped;
  • the main channel includes a first main channel and a second main channel, the first main channel has a first channel opening and a second channel opening, the second main channel has a third channel opening and a fourth channel opening, the first channel opening of the first main channel and the third channel opening of the second main channel are respectively connected to the feed pipe, the second channel opening of the first main channel and the fourth channel opening of the second main channel are respectively connected to the discharge pipe, a first valve is provided between the first main channel and the second main channel, the first valve is used to connect the first main channel and the second main channel to each other or to disconnect them from each other;
  • the slurry conveying step comprises:
  • a conveying route connecting step connecting the first main channel and the second main channel to the discharge pipeline respectively, disconnecting the first main channel and the second main channel from the bypass pipeline, and disconnecting the first main channel and the second main channel from each other via the first valve;
  • a slurry conveying step wherein the slurry conveyed from the feed pipe is divided into two paths and enters the discharge pipe through the first main channel and the second main channel respectively;
  • the slurry circulation step comprises:
  • a circulation route connecting step connecting the first main channel and the second main channel to the bypass line respectively, disconnecting the first main channel and the second main channel from the discharge line, and connecting the first main channel and the second main channel to each other via the first valve;
  • the step of driving the slurry to circulate causes the slurry in the first main channel and the second main channel to circulate through the first main channel, the second main channel and the bypass line.
  • the route is switched so that the main line is connected to the discharge line to form a conveying line, or connected to the bypass line to form a circulation loop, thereby realizing the switching of the conveying line and the circulation loop, and then the slurry is made to flow in the respective lines to realize the conveying or circulating flow of the slurry.
  • the slurry in the main line is in a flowing state, which can reduce the probability of gelation due to standing, reduce the number of operations to remove the gel, and thus reduce the use cost of the slurry conveying device.
  • the connection state of the main line, the bypass line and the discharge line the flow direction of the slurry can be changed to realize the circulation flow of the residual slurry. Therefore, the structure of this slurry conveying device is relatively simple, and the manufacturing cost of the slurry conveying device is low. That is, the use cost and manufacturing cost of the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the slurry conveying device further includes a second valve, which is installed at one end of the discharge pipeline close to the main pipeline;
  • the second valve is adjusted to an open state so that the first main channel and the second main channel are connected to the discharge pipeline respectively.
  • the second valve is adjusted to a closed state so that the first main channel and the second main channel are They are all disconnected from the discharge pipeline.
  • the main line and the discharge line can be connected or disconnected, so that the main line can be connected with the discharge line to form a conveying line, or connected with the bypass line to form a circulation loop, thereby realizing the switching of the conveying line and the circulation loop.
  • the feed pipe is connected to a first pump, and the bypass line is connected to a second pump;
  • the first pump is started to drive the slurry transported from the feed pipe to be divided into two paths and enter the discharge pipe through the first main channel and the second main channel respectively;
  • the second pump is started to drive the slurry in the first main channel and the second main channel to circulate through the first main channel, the second main channel and the bypass line.
  • the first pump drives the slurry to flow in the conveying pipeline
  • the second pump drives the slurry to circulate in the circulation loop, thereby realizing the flow of slurry in two states, so as to reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the slurry conveying device has a simple structure and low manufacturing cost. That is, the use cost and manufacturing cost of the slurry conveying device are both reduced, thereby reducing the manufacturing cost of the battery.
  • the present disclosure provides a slurry conveying device, a battery coating line, and a slurry conveying method that can reduce battery manufacturing costs.
  • FIG1 is a schematic diagram of a structure of a slurry conveying device provided in some embodiments of the present disclosure
  • Figure 2 is an enlarged view of point A in Figure 1;
  • FIG3 is a top view of the internal structure of a main pipe according to some embodiments of the present disclosure.
  • FIG4 is a side view of a main pipe provided by some embodiments of the present disclosure.
  • FIG5 is a schematic diagram of another structure of a slurry conveying device provided in some embodiments of the present disclosure.
  • FIG6 is a schematic structural diagram of a battery coating line provided by some embodiments of the present disclosure.
  • FIG7 is a flow chart of a slurry conveying method provided by some embodiments of the present disclosure.
  • FIG8 is another flow chart of a slurry conveying method provided by some embodiments of the present disclosure.
  • references herein to "embodiments” mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure.
  • the appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
  • the term "and/or” is simply a description of the association relationship between associated objects, indicating that three relationships can exist.
  • a and/or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.
  • the character "/" in this document generally indicates that the associated objects are in an "or" relationship.
  • orientations or positional relationships indicated by technical terms such as “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, and “circumferential” are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present disclosure.
  • contact should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.
  • the battery may be a battery cell.
  • the battery cell can be a secondary battery.
  • a secondary battery is a battery cell that can be charged to activate the active material after discharge. Battery cells that can be used continuously.
  • a battery cell includes an electrode assembly.
  • This assembly includes a positive electrode sheet, a negative electrode sheet, and a separator.
  • active ions such as lithium ions
  • the separator located between the positive and negative electrode sheets, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.
  • the preparation steps for positive and negative electrode sheets include: using a slurry preparation device to disperse the active materials for the positive and negative electrodes (such as oxides and graphite) in a solvent to form a slurry. These slurries typically contain active materials, conductive agents, and binders. Then, a coating device is used to apply the prepared electrode slurry to a current collector (such as aluminum or copper foil).
  • a slurry preparation device to disperse the active materials for the positive and negative electrodes (such as oxides and graphite) in a solvent to form a slurry.
  • These slurries typically contain active materials, conductive agents, and binders.
  • a coating device is used to apply the prepared electrode slurry to a current collector (such as aluminum or copper foil).
  • a slurry conveying device is required to convey the slurry prepared by the slurry preparation device to the coating device for application, thereby completing the battery electrode preparation process.
  • Battery slurry is a solid-liquid mixture formed by mixing and stirring a solvent, active material, conductive agent, adhesive, thickener, and other additives in a specific ratio.
  • slurry conveying devices often use a method of removing residual slurry from the pipeline to reduce the chance of slurry gelling within the pipeline, thereby facilitating the next normal use of the slurry conveying device.
  • one method of removing residue is to use a push ball connected to a scraper to move within the pipeline. During the movement of the push ball within the pipeline, the scraper scrapes away residual slurry within the pipeline, thereby cleaning the pipeline.
  • This type of slurry conveying device is equipped with a power device to drive the push ball and related structures for loading and removing the push ball, which makes the slurry conveying device structure complex and leads to high manufacturing costs.
  • the inventors of the present disclosure found that, instead of removing the residual slurry, the residual slurry is circulated, so that the residual slurry can be kept in a flowing state, which can greatly reduce the probability of the slurry gelling in the pipeline and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the slurry conveying device that adopts the residual slurry circulation flow method can change the flow direction of the slurry by changing the connectivity of the pipeline, thereby realizing the circulation of the residual slurry. Therefore, the structure of this slurry conveying device is relatively simple, and the manufacturing cost of the slurry conveying device is low. That is, the use cost and manufacturing cost of the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • a slurry conveying device which includes a main line, a bypass line and a discharge line.
  • the bypass line is connected to the main line, one end of the discharge line is connected to one end of the main line, and the other end is used to output the slurry.
  • the slurry conveying device has a slurry conveying state and a slurry circulation state. In the slurry conveying state, the main line and the bypass line are not connected, and the main line and the discharge line are connected to convey the slurry delivered from the feed line. In the slurry circulation state, the main line and the discharge line are not connected, and the main line and the bypass line are connected to form a circulation loop for the slurry to circulate.
  • the slurry conveying device When it is necessary to convey slurry, the slurry conveying device is put into a slurry conveying state, the main line and the bypass line are disconnected, the main line and the discharge line are connected, and the slurry conveyed from the inlet pipe is conveyed; after the slurry conveying is completed, the slurry conveying device is put into a slurry circulation state, the main line and the discharge line are disconnected, the main line and the bypass line are connected to form a circulation loop, so that the residual slurry in the slurry conveying device circulates in the circulation loop.
  • the slurry in the main line is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the connection state of the main line, the bypass line and the discharge line the flow direction of the slurry can be changed, and the circulation flow of the residual slurry can be realized. Therefore, this slurry conveying device
  • the structure of the device is relatively simple, and the manufacturing cost of the slurry conveying device is low, that is, the use cost and the manufacturing cost of the slurry conveying device are reduced, thereby reducing the manufacturing cost of the battery.
  • the slurry conveying device of the embodiment of the present disclosure can be used in the battery production process, for example, for conveying battery slurry to a pole piece coating device, etc.
  • the slurry conveying device provided in the embodiment of the present disclosure is not only used for conveying slurry in the battery production process, but can also be used for conveying other slurries that are easy to settle and need to be conveyed.
  • Figure 1 is a schematic diagram of a structure of a slurry conveying device provided in some embodiments of the present disclosure
  • Figure 2 is an enlarged view of point A in Figure 1
  • Figure 3 is a top view of the internal structure of the main line provided in some embodiments of the present disclosure
  • Figure 4 is a side view of the main line provided in some embodiments of the present disclosure
  • Figure 5 is a schematic diagram of another structure of a slurry conveying device provided in some embodiments of the present disclosure.
  • the first aspect of the present disclosure provides a slurry conveying device 10, including a main line 1, a bypass line 2 and a discharge line 3, the bypass line 2 is connected to the main line 1; one end of the discharge line 3 is connected to one end of the main line 1, and the other end is used to output slurry; the slurry conveying device 10 has a slurry conveying state and a slurry circulation state.
  • the main line 1 and the bypass line 2 are not connected, and the main line 1 and the discharge line 3 are connected to convey the slurry delivered from the feed pipe 4.
  • the main line 1 and the discharge line 3 are not connected, and the main line 1 and the bypass line 2 are connected to form a circulation loop for the slurry to circulate.
  • Connected means that the internal channels of the two connected pipelines are interconnected and can provide a path for the slurry to flow.
  • Non-connected means that there is an obstruction in the internal channel of at least one of the two connected pipelines or there is an obstruction at the connection between the two channels, so that the pipeline group formed by the two connected pipelines is blocked and does not provide a path for the slurry to flow, that is, the slurry is not allowed to flow through.
  • the main pipeline 1 and the bypass pipeline 2 are non-connected, and the pipeline group formed by the main pipeline 1 and the bypass pipeline 2 does not allow the slurry to flow through, while the main pipeline 1 and the discharge pipeline 3 are connected, and the pipeline group formed by the main pipeline 1 and the discharge pipeline 3 (hereinafter referred to as the conveying pipeline) allows the slurry to flow through. Therefore, the slurry entering from the end of the main pipeline 1 away from the discharge pipeline 3 can flow through the main pipeline 1 and the discharge pipeline 3 in sequence, thereby conveying the slurry.
  • the main line 1 and the discharge line 3 are not connected, and the pipeline group formed by the main line 1 and the discharge line 3 does not allow the slurry to flow through.
  • the main line 1 and the bypass line 2 are connected, and the pipeline group (circulation loop) formed by the main line 1 and the bypass line 2 allows the slurry to flow through, that is, the slurry can circulate in the circulation loop.
  • the slurry transporting device When slurry needs to be transported, the slurry transporting device is in a slurry transporting state, the main line 1 and the bypass line 2 are disconnected, the main line 1 and the discharge line 3 are connected, and the slurry transported from the inlet pipe 4 is transported; after the slurry transport is completed, the slurry transporting device 10 is in a slurry circulation state, the main line 1 and the discharge line 3 are disconnected, the main line 1 and the bypass line 2 are connected to form a circulation loop, and the residual slurry in the slurry transporting device 10 circulates in the circulation loop. In this way, the slurry in the main pipeline is in a flowing state.
  • the probability of gelation due to standing still can be reduced, and the number of operations for removing the gel can be reduced, thereby reducing the use cost of the slurry conveying device 10.
  • the structure of this type of slurry conveying device 10 is relatively simple, and the manufacturing cost of the slurry conveying device 10 is low. That is, the use cost and manufacturing cost of the slurry conveying device 10 are reduced, thereby reducing the manufacturing cost of the battery.
  • the main channel 1 includes a first main channel 11 and a second main channel 12, the first main channel 11 has a first channel opening 111 and a second channel opening 112, the second main channel 12 has a third channel opening 121 and a fourth channel opening 122, the first channel opening 111 of the first main channel 11 and the third channel opening 121 of the second main channel 12 are respectively connected to the feed pipe 4, the second channel opening 112 of the first main channel 11 and the fourth channel opening 122 of the second main channel 12 are respectively connected to the discharge pipe 3, and a first valve 51 is provided between the first main channel 11 and the second main channel 12, and the first valve 51 is used to make the first main channel 11 and the second main channel 12 connected to each other or not connected to each other.
  • connection between the two channels means that the connection between the two channels is connected, and the slurry in one channel can enter the other channel through the connection between the two channels.
  • Not connected to each other means that there is a barrier at the connection between the two channels, and the two channels are not connected and isolated from each other, and the slurry in each channel cannot enter the other channel.
  • the first main channel 11 and the second main channel 12 are not connected to each other, the first main channel 11 and the second main channel 12 are isolated from each other, and the slurry in the first main channel 11 cannot enter the second main channel 12, and the slurry in the second main channel 12 cannot enter the first main channel 11.
  • the first valve 51 is used to disconnect the first main channel 11 and the second main channel 12 from each other, and the slurry input from the feed pipe 4 is divided into two paths.
  • the two paths of slurry pass through the first main channel 11 and the second main channel 12 respectively and enter the discharge pipe 3 to transport the slurry;
  • the first valve 51 is used to connect the first main channel 11 and the second main channel 12 to each other, so that the first main channel 11 and the second main channel 12 can form a circulation loop with the bypass pipe 2 for the residual slurry to circulate.
  • the first main channel 11 and the second main channel 12 of the main pipe 1 can be respectively arranged in two pipe bodies, or can be arranged in the same pipe body.
  • the main line 1 and the discharge line 3 can be connected to form a conveying line, and the main line 1 and the bypass line 2 can be connected to form a circulation loop, thereby realizing the switching between the conveying line and the circulation loop.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main line 1 is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the cost of using the slurry conveying device 10.
  • the cost of using and manufacturing the slurry conveying device 10 is reduced, thereby reducing the manufacturing cost of the battery.
  • the main line 1 includes a tube body 13 and a partition plate 14 arranged in the tube body 13, the partition plate 14 divides the channel in the tube body 13 into a first main channel 11 and a second main channel 12, and the first valve 51 is arranged on the partition plate 14.
  • a partition plate 14 is used to separate the channel in the tube body 13 into a first main channel 11 and a second main channel 12, which reduces the number of pipelines, saves costs, makes the structure compact, and occupies a small space.
  • a first valve 51 is provided on the partition plate 14. By opening and closing the first valve 51, the first main channel 11 and the second main channel 12 can be switched between being connected to each other and being non-connected to each other.
  • the structure is simple and the switching operation is simple.
  • the slurry conveying device 10 further includes a connector 6 , which is respectively connected to the main pipeline 1 , the discharge pipeline 3 , and the bypass pipeline 2 .
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main line 1 is in a flowing state, which reduces the chance of gelation due to standing still and reduces the number of gel removal operations, thereby reducing the cost of using the slurry conveying device 10. In other words, both the cost of using and the cost of manufacturing the slurry conveying device 10 are reduced, thereby reducing the manufacturing cost of the battery.
  • the connecting member 6 has a first port 61, a second port 62, a third port 63, a fourth port 64 and a fifth port 65, the first port 61 is connected to the second channel port 112 of the first main channel 11, the second port 62 is connected to the fourth channel port 122 of the second main channel 12, the third port 63 and the fourth port 64 are respectively connected to the two ends of the bypass pipeline, and the fifth port 65 is connected to the discharge pipeline.
  • the connector 6 can be a connecting structure used only to connect the first main channel 11, the second main channel 12, the discharge pipeline 3 and the bypass pipeline 2, or it can be a valve that can both connect and adjust the connection and non-connection status between the ports.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main pipeline 1 is in a flowing state, which can reduce the probability of gelation due to static standing and reduce the number of gel removal operations, thereby reducing the cost of using the slurry conveying device 10. In other words, the cost of using and manufacturing the slurry conveying device 10 is reduced, thereby reducing the manufacturing cost of the battery.
  • the first port 61 is connected to the third port 63 and the fifth port 65
  • the second port 62 is connected to the fourth port 64 and the fifth port 65
  • the first port 61 and the second port 62 are not connected
  • the third port 63 and the fourth port 64 are not connected.
  • This connector 6 is a connecting structure used only to connect the first main channel 11, the second main channel 12, the discharge pipeline 3 and the bypass pipeline 2.
  • the valves arranged on the bypass pipeline 2 and the discharge pipeline 3 can be used to realize the non-connected or connected state of the first main channel 11 and the second main channel 12 with the bypass pipeline 2 and the discharge pipeline 3.
  • a third valve 53 and a fourth valve 54 are respectively provided at both ends of the bypass line 2, the third valve 53 being provided close to the third port 63, and the fourth valve 54 being provided close to the fourth port 64.
  • a second valve 52 is provided at one end of the discharge line 3 close to the fifth port 65.
  • the third valve 53 and the fourth valve 54 are both closed, so that the first main channel 11 and the second main channel 12 are not connected to the bypass line 2, and the second valve 52 is opened, so that the first main channel 11 and the second main channel 12 are connected to the discharge line 3; in the slurry circulation state, the third valve 53 and the fourth valve 54 are both opened, so that the first main channel 11 and the second main channel 12 are connected to the bypass line 2 to form a circulation loop, and the second valve 52 is closed, so that the first main channel 11 and the second main channel 12 are not connected to the discharge line 3.
  • the straight arrows in Figure 1 indicate the flow direction of the slurry, and the slurry input from the feed pipe 4 is divided into two paths.
  • the two slurries pass through the first main channel 11 and the second main channel 12 respectively and enter the connector 6 through the first port 61 and the second port 62 of the connector 6 respectively, and both enter the discharge pipeline 3 through the fifth port 65 to realize the conveying of the slurry;
  • the straight arrows in Figure 5 indicate the flow direction of the slurry.
  • the slurry remaining in the first main channel 11 and the second main channel 12 circulates through the first main channel 11, the first valve 51, the second main channel 12, the second port 62, the fourth port 64, the bypass line 2, the third port 63 and the first port 61 in sequence to realize the circulation flow of the residual slurry.
  • the first main channel 11 and the second main channel 12 can be connected to the discharge pipeline 3 to form a delivery pipeline, or respectively connected to the two ends of the bypass pipeline 2 to form a circulation loop, thereby realizing the switching between the delivery pipeline and the circulation loop.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main pipeline 1 is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the cost of use of the slurry conveying device 10.
  • the cost of use and manufacturing of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the connector 6 is a valve having the function of adjusting the connectivity or non-connectivity between the ports. In the slurry conveying state, the connector 6 is adjusted so that the first port 61 is only connected to the fifth port 65, and the second port 62 is only connected to the fifth port 65; in the slurry circulation state, the connector 6 is adjusted so that the first port 61 is only connected to the third port 63, and the second port 62 is only connected to the fourth port 64.
  • the first port 61 is connected only to the fifth port 65, and the second port 62 is connected only to the fifth port 65, so that the slurry flowing out of the first main channel 11 and the second main channel 12 flows to the fifth port 65 through the first port 61 and the second port 62, respectively, and is then transported to the discharge pipeline 3.
  • the first port 61 is connected only to the third port 63, and the second port 62 is connected only to the fourth port 64, so that the slurry flowing into the second main channel 12 can enter the connector 6 through the second port 62, enter the bypass pipeline 2 through the fourth port 64, enter the connector 6 through the third port 63, and then flow out through the first port 61 and enter the first main channel 11.
  • the slurry in the first main channel 11 passes through the first valve 51 and enters the second main channel 12. The cycle continues as above, realizing the circulation of the slurry in the circulation loop.
  • the third valve 53 and the fourth valve 54 may not be provided on the bypass line 2.
  • the second valve 52 may not be provided on the pipeline 3.
  • the third valve 53 and the fourth valve 54 may also be provided on the bypass pipeline 2, and the second valve 52 may be provided on the discharge pipeline 3.
  • the first main channel 11 and the second main channel 12 are adjusted to be connected or disconnected with the discharge pipe 3 and the bypass pipe 2, so that the first main channel 11 and the second main channel 12 can be connected with the discharge pipe 3 to form a conveying pipe, or connected with the bypass pipe 2 to form a circulation loop, thereby realizing the switching between the conveying pipe and the circulation loop.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main pipe is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the cost of use of the slurry conveying device 10.
  • the cost of use and manufacturing of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the first port 61 and the second port 62 are provided at the same end of the connector 6 .
  • first port 61 and the second port 62 can be directly connected to the first main channel 11 and the second main channel 12 located in the same tube body 13, respectively, which simplifies the connection structure and further reduces the manufacturing cost.
  • the first port 61 and the second port 62 are arranged at the same end of the connector 6, the fifth port 65 is arranged at the other end of the connector 6 opposite to the first port 61, and the third port 63 and the fourth port 64 are respectively arranged at opposite ends of the connector 6, and the direction relative to the third port 63 and the fourth port 64 and the direction relative to the fifth port 65 and the first port 61 are perpendicular to each other.
  • the layout of the various ports of the connector 6 is more uniform, which is beneficial to reducing the size of the connector 6.
  • the space around each port is relatively large, which facilitates the connection operation between the pipeline and the connector 6.
  • a through hole is formed at one end of the partition plate 14 away from the connecting member 6, and a first valve 51 is installed in the through hole.
  • the first valve 51 In the slurry conveying state, the first valve 51 is adjusted to a closed state so that the first main channel 11 and the second main channel 12 are not connected to each other.
  • the first valve 51 In the slurry circulation state, the first valve 51 is adjusted to an open state so that the first main channel 11 and the second main channel 12 are connected to each other.
  • the first valve 51 opens or closes to adjust the connection between the first and second main channels 11, 12, and switches between the transport and circulation paths. Positioning the first valve 51 at the end of the partition plate 14 away from the connector 6 allows the slurry to flow over a greater distance within the first and second main channels 11, 12, maintaining a faster flow as much as possible and minimizing the risk of gelation.
  • the first valve 51 includes a one-way valve or a two-way valve.
  • Both the one-way valve and the two-way valve can realize the adjustment of the first main channel 11 and the second main channel 12 being connected to each other or not connected to each other, and the range of options is wide, which is conducive to reducing costs.
  • the slurry conveying device 10 also includes a second valve 52, which is installed at one end of the discharge pipeline 3 close to the main pipeline 1.
  • the second valve 52 In the slurry conveying state, the second valve 52 is adjusted to an open state to connect the discharge pipeline 3 and the main pipeline 1. In the slurry circulation state, the second valve 52 is adjusted to a closed state to disconnect the discharge pipeline 3 and the main pipeline 1.
  • the second valve 52 is provided to adjust the connection or disconnection between the main line 1 and the discharge line 3, so that the main line 1 can be connected to the discharge line 3 to form a delivery line, or connected to the bypass line 2 to form a circulation loop, thereby realizing the switching between the delivery line and the circulation loop.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main line 1 is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the cost of use of the slurry conveying device 10.
  • the cost of use and manufacturing of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the end of the discharge pipe 3 away from the main pipe 1 extends into the slurry tank 7.
  • the slurry transported from the feed pipe 4 passes through the main pipe 1 and the discharge pipe 3 in sequence and enters the slurry tank 7 .
  • the slurry is transported to the slurry tank 7 for use by the electrode coating device 30 for coating operations.
  • the feed pipe 4 is connected to a first pump 81.
  • the first pump 81 drives the slurry to flow in the main line 1 and the discharge line 3;
  • the bypass line 2 is connected to a second pump 82.
  • the second pump 82 drives the slurry in the circulation loop to circulate in the circulation loop.
  • the first pump 81 provides power for conveying the slurry
  • the second pump 82 provides power for the slurry to circulate in the circulation loop, thereby realizing the flow of the slurry in two states, reducing the probability of gelation due to standing still, and reducing the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device 10.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost, that is, the use cost and manufacturing cost of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the first pump 81 includes a screw pump
  • the second pump 82 includes a diaphragm pump
  • the slurry flow rate is relatively large, and it is more appropriate to use a screw pump with higher power.
  • the flow rate of the slurry flowing in the circulation loop is relatively small, and it is more appropriate to use a diaphragm pump with lower power, which can not only make the slurry flow at an appropriate flow rate, but also help to control costs.
  • the delivery flow of the second pump 82 is adjustable, and the delivery flow adjusted by the second pump 82 is no greater than 150 L/min.
  • the delivery flow rate regulated by the second pump 82 can be 80L/min, 85L/min, 90L/min, 95L/min, 100L/min, 105L/min, 110L/min, 115L/min, 120L/min, 125L/min, 130L/min, 135L/min, 140L/min, 145L/min or 150L/min, etc.
  • the discharge pipe 3 extends in a vertical direction.
  • the discharge pipeline 3 is set to extend in the vertical direction, so that the slurry in the discharge pipeline 3 flows downward under the action of gravity, which is beneficial to saving the energy of the first pump 81. Moreover, when the slurry is in the circulation state, the slurry in the discharge pipeline 3 is not easy to settle on the inner wall of the discharge pipeline 3, thereby reducing the probability of gelation.
  • the partition plate 14 and the tube body 13 are integrally formed.
  • a fifth valve 55 is provided at one end of the feed pipe 4 connected to the main line 1.
  • the fifth valve 55 In the slurry conveying state, the fifth valve 55 is in an open state, and the feed pipe 4 and the first main channel 11 and the second main channel 12 of the main line 1 are connected, so that the slurry entering from the feed pipe 4 can enter the first main channel 11 and the second main channel 12; in the slurry circulation state, the fifth valve 55 is in a closed state, and the first main channel 11 and the second main channel 12 are not connected to the feed pipe 4, and the fifth valve 55 closes the first channel port 111 of the first main channel 11 and the third channel port 121 of the second main channel 12, so that the slurry will not flow back into the feed pipe 4 in the slurry circulation state.
  • the tube body 13 is made of hard engineering plastic.
  • the material of the tube body 13 is at least one of polyamide, polytetrafluoroethylene, polyetheretherketone, polyphenylene sulfide, polycarbonate and polyphenylene ether.
  • Hard engineering plastics have high mechanical strength, low friction coefficient, strong wear resistance and are easily available.
  • FIG6 is a schematic structural diagram of a battery coating line provided by some embodiments of the present disclosure.
  • the second aspect of the present disclosure provides a battery coating line, including a slurry preparation device 20, a pole piece coating device 30 and a slurry conveying device 10 provided by the first aspect of the present disclosure.
  • the slurry preparation device 20 is used to prepare slurry
  • the pole piece coating device 30 is used to coat the slurry on the collector to form a pole piece; wherein, the slurry conveying device 10 is used to convey the slurry prepared by the slurry preparation device 20 to the pole piece coating device 30.
  • the slurry conveying device 10 conveys the slurry for use by the electrode coating device 30 .
  • the slurry in the circulation loop circulates in the circulation loop.
  • the battery coating line includes the slurry conveying device 10 , the battery coating line includes all the beneficial effects of the slurry conveying device 10 , and therefore, both the use cost and the manufacturing cost of the battery coating line are reduced, thereby reducing the manufacturing cost of the battery.
  • FIG7 is a flow chart of a slurry conveying method provided in some embodiments of the present disclosure
  • FIG8 is another flow chart of a slurry conveying method provided in some embodiments of the present disclosure.
  • a slurry conveying method is provided, using a slurry conveying device 10, the slurry conveying device 10 including a main line 1, a bypass line 2, and a discharge line 3, wherein the bypass line 2 is connected to the main line 1, one end of the discharge line 3 is connected to one end of the main line 1, and the other end is used to discharge the slurry;
  • the slurry conveying method includes:
  • S1 slurry conveying step: disconnecting the main line and the bypass line, connecting the main line and the discharge line, and conveying the slurry conveyed from the feed line;
  • slurry circulation step the main line and the discharge line are disconnected, and the main line and the bypass line are connected to form a circulation loop, so that the slurry circulates in the circulation loop.
  • the slurry circulation step is performed in a state where the slurry conveying step is stopped.
  • the slurry conveying step and the slurry circulation step are not performed in any particular order.
  • the slurry circulation step is performed when the slurry conveying step is stopped, and the slurry circulation step is stopped when the slurry conveying step is needed.
  • the slurry is conveyed through the main line 1 and the discharge line 3.
  • the slurry circulation step the slurry in the main line 1 circulates in the circulation loop formed by the main line 1 and the bypass line 2. In this way, the slurry in the main line 1 is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device 10.
  • the flow direction of the slurry can be changed to achieve the circulation of the residual slurry.
  • the structure of this type of slurry conveying device 10 is relatively simple, and the manufacturing cost of the slurry conveying device 10 is low. That is, the use cost and manufacturing cost of the slurry conveying device 10 are reduced, thereby reducing the manufacturing cost of the battery.
  • the main channel 1 includes a first main channel 11 and a second main channel 12, the first main channel 11 has a first channel port 111 and a second channel port 112, the second main channel 12 has a third channel port 121 and a fourth channel port 122, the first channel port 111 of the first main channel 11 and the third channel port 121 of the second main channel 12 are respectively connected to the feed pipe 4, the second channel port 112 of the first main channel 11 and the fourth channel port 122 of the second main channel 12 are respectively connected to the discharge pipe 3, and a first valve 51 is provided between the first main channel 11 and the second main channel 12, and the first valve 51 is used to connect the first main channel 11 and the second main channel 12 to each other or to disconnect them from each other;
  • the slurry conveying step includes:
  • a conveying route connecting step connecting the first main channel and the second main channel to the discharge pipeline respectively, disconnecting the first main channel and the second main channel from the bypass pipeline, and disconnecting the first main channel and the second main channel from each other by a first valve;
  • the slurry circulation steps include:
  • a circulation route connecting step connecting the first main channel and the second main channel to the bypass pipeline respectively, the first main channel and the second main channel are both disconnected from the discharge pipeline, and the first main channel and the second main channel are connected to each other via a first valve;
  • the route is first switched so that the main line 1 is connected to the discharge line 3 to form a conveying line, or is connected to the bypass line 2 to form a circulation loop, thereby realizing the switching of the conveying line and the circulation loop, and then the slurry is made to flow in the respective lines to realize the conveying or circulating flow of the slurry, which can reduce the probability of gelation due to standing and reduce the number of operations for removing the gel, thereby reducing the use cost of the slurry conveying device 10.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost, that is, the use cost and manufacturing cost of the slurry conveying device 10 are reduced, thereby reducing the manufacturing cost of the battery.
  • the slurry conveying device 10 further includes a second valve 52 , which is installed at one end of the discharge pipeline 3 close to the main pipeline 1 ;
  • the second valve 52 is adjusted to an open state, so that the first main channel 11 and the second main channel 12 are connected to the discharge pipeline 3 respectively;
  • the second valve 52 is adjusted to a closed state, so that both the first main channel 11 and the second main channel 12 are disconnected from the discharge pipeline 3 .
  • the main line 1 and the discharge line 3 are connected or disconnected, so that the main line 1 can be connected to the discharge line 3 to form a delivery line, or connected to the bypass line 2 to form a circulation loop, thereby realizing the switching between the delivery line and the circulation loop.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost.
  • the slurry in the main line 1 is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the cost of use of the slurry conveying device 10.
  • the cost of use and manufacturing of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the feed pipe 4 is connected to a first pump 81 , and the bypass line 2 is connected to a second pump 82 ;
  • the first pump 81 is started to drive the slurry delivered from the feed pipe 4 to be divided into two paths and enter the discharge pipe 3 through the first main channel 11 and the second main channel 12 respectively;
  • the second pump 82 is started to drive the slurry in the first main channel 11 and the second main channel 12 to circulate through the first main channel 11 , the second main channel 12 and the bypass line 2 .
  • the first pump 81 drives the slurry to flow in the conveying pipeline
  • the second pump 82 drives the slurry to circulate in the circulation loop, thereby realizing the flow of the slurry in two states, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device 10.
  • the slurry conveying device 10 has a simple structure and low manufacturing cost, that is, the use cost and manufacturing cost of the slurry conveying device 10 are both reduced, thereby reducing the manufacturing cost of the battery.
  • the slurry conveying device 10 includes a main pipeline (main pipeline 1), a bypass pipeline (bypass pipeline 2) and a discharge pipe (discharge pipeline 3), the bypass pipeline and the discharge pipe are respectively connected to the main pipeline, and the end of the discharge pipe away from the main pipeline extends into a transfer tank (slurry tank 7) with a capacity of 1200L.
  • a pipeline partition (partition plate 14) is provided in the internal channel of the main pipeline, and the pipeline partition divides the internal channel into a first flow channel (first main channel 11) and a second flow channel (second main channel 12).
  • a one-way valve (first valve 51) is provided at the end of the pipeline partition away from the bypass pipeline.
  • the main pipeline and the discharge pipe are connected by an on-off valve (connector 6), and both ends of the bypass pipeline are respectively connected to the on-off valve.
  • a discharge valve (second valve 52) is provided at the end of the discharge pipe close to the main pipeline, a screw pump (first pump 81) is provided upstream of the main pipeline, and the bypass pipeline is connected to a diaphragm pump (second pump 82).
  • the discharge valve When the slurry conveying device 10 conveys slurry, the discharge valve is opened, the one-way valve is closed, and the on-off valve adjusts the first flow channel and the second flow channel to only separate The first and second flow channels are connected to the discharge pipe respectively, the screw pump is started, and the slurry enters the transfer tank through the main pipe and the discharge pipe in turn; when the slurry conveying device 10 stops conveying the slurry, the discharge valve is closed, the one-way valve is opened, and the on-off valve adjusts the first flow channel and the second flow channel to be connected only to the two ends of the bypass pipe respectively, forming a circulation loop, the screw pump is closed, and the diaphragm pump is started, and the slurry remaining in the first flow channel and the second flow channel circulates in the circulation loop.
  • the delivery flow rate of the diaphragm pump is adjustable within the range of 0-150L/min, and the recommended value of the delivery flow rate of the diaphragm pump is 100L/min.
  • the present disclosure provides a slurry conveying device, a battery coating line, and a slurry conveying method that can reduce the cost of battery manufacturing.
  • the slurry conveying device When slurry needs to be conveyed, the slurry conveying device is placed in a slurry conveying state, the main line and the bypass line are disconnected, the main line and the discharge line are connected, and the slurry conveyed from the feed pipe is conveyed; after the slurry conveying is completed, the slurry conveying device is placed in a slurry circulation state, the main line and the discharge line are disconnected, the main line and the bypass line are connected to form a circulation loop, and the residual slurry in the main line circulates in the circulation loop.
  • the slurry in the main line is in a flowing state, which can reduce the probability of gelation due to standing still and reduce the number of operations to remove the gel, thereby reducing the use cost of the slurry conveying device.
  • the connection state of the main line, the bypass line, and the discharge line the flow direction of the slurry can be changed, and the circulation flow of the residual slurry can be achieved. Therefore, the structure of this slurry conveying device is relatively simple and the manufacturing cost of the slurry conveying device is low.

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Abstract

一种浆料输送装置、电池涂布线及浆料输送方法，浆料输送装置包括主管路；旁通管路，连接于主管路；出料管路，其一端连接于主管路的一端，另一端用于输出浆料；其中，浆料输送装置具有浆料输送状态和浆料循环状态，在浆料输送状态下，主管路和旁通管路非连通，主管路和出料管路相连通，以对从入料管道输送来的浆料进行输送，在浆料循环状态下，主管路和出料管路非连通，主管路和旁通管路相连通并形成供浆料循环流动的循环回路。

Description

浆料输送装置、电池涂布线及浆料输送方法
相关申请的交叉引用
本公开基于申请号为202410405805.8、申请日为2024年04月07日、发明名称为“浆料输送装置、电池涂布线及浆料输送方法”的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本公开作为参考。
技术领域
本公开涉及电池制造技术领域，尤其涉及浆料输送装置、电池涂布线及浆料输送方法。
背景技术
新能源电池在生活和产业中的应用越来越广泛，例如，搭载电池的新能源汽车已经被广泛使用，另外，电池还被越来越多地应用于储能领域等。
随着电池制造技术的不断发展，如何降低电池的制造成本是业界所需研究的课题之一。
发明内容
为解决上述技术问题，本公开提供一种能够降低电池制造成本的浆料输送装置、电池涂布线及浆料输送方法。
本公开通过如下技术方案实现。
本公开的第一方面提供一种浆料输送装置，包括：主管路；旁通管路，连接于所述主管路；出料管路，其一端连接于所述主管路的一端，另一端用于输出浆料；其中，所述浆料输送装置具有浆料输送状态和浆料循环状态，在所述浆料输送状态下，所述主管路和所述旁通管路非连通，所述主管路和所述出料管路相连通，以对从入料管道输送来的浆料进行输送，在所述浆料循环状态下，所述主管路和所述出料管路非连通，所述主管路和所述旁通管路相连通并形成供浆料循环流动的循环回路；所述主管路包括第一主通道和第二主通道，所述第一主通道具有第一通道口和第二通道口，所述第二主通道具有第三通道口和第四通道口，所述第一主通道的所述第一通道口和所述第二主通道的所述第三通道口分别连接于所述入料管道，所述第一主通道的所述第二通道口和所述第二主通道的所述第四通道口分别连接于所述出料管路，所述第一主通道和所述第二主通道之间设有第一阀，所述第一阀用于使所述第一主通道和所述第二主通道彼此连通或彼此非连通。
在需要输送浆料时，使浆料输送装置处于浆料输送状态，主管路和旁通管路非连通，主管路和出料管路相连通，并对从入料管道输送来的浆料进行输送；在浆料输送结束后，使浆料输送装置处于浆料循环状态，主管路和出料管路非连通，主管路和旁通管路相连通并形成循环回路，主管路中残余的浆料在循环回路中循环流动，如此，主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，通过改变主管路与旁通管路和出料 管路的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置的结构比较简单，浆料输送装置的制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
主管路的具体结构可以使得主管路和出料管路连通时形成输送管路，主管路和旁通管路连通时形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置的结构简单，制造成本低，主管道内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述主管路包括管体和设置于所述管体内的分隔板，所述分隔板将所述管体内的通道分隔为所述第一主通道和所述第二主通道，所述第一阀设置于所述分隔板。
使用分隔板将管体内的通道分隔为第一主通道和第二主通道，减少了管路的数量，节约成本，结构紧凑，占用的空间小，而且，在分隔板设置第一阀，通过第一阀的开闭可以切换第一主通道和第二主通道的彼此连通和非连通的状态，结构简单，切换操作简捷。
在一些实施例中，所述浆料输送装置还包括连接件，所述连接件分别连接于所述主管路、所述出料管路和所述旁通管路。
连接件的设置，实现了主管路、出料管路和旁通管路之间的相互连接，使得主管路能够与出料管路连通形成输送管路。而且，浆料输送装置的结构简单，制造成本低，主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述连接件具有第一端口、第二端口、第三端口、第四端口和第五端口，所述第一端口与所述第一主通道的所述第二通道口相连，所述第二端口与所述第二主通道的所述第四通道口相连，所述第三端口和所述第四端口分别与所述旁通管路的两端相连，所述第五端口和所述出料管路相连。
如此，实现了第一主通道、第二主通道、出料管路和旁通管路之间的相互连接，使得第一主通道、第二主通道能够与出料管路连通形成输送管路，或者与旁通管路连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置的结构简单，制造成本低，主管道内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述第一端口连通于所述第三端口和所述第五端口，所述第二端口连通于所述第四端口和所述第五端口，所述第一端口和所述第二端口非连通，所述第三端口和所述第四端口非连通。
如此，通过对连接件的各端口之间的连通状态的限定，使得第一主通道、第二主通道能够分别与出料管路连通形成输送管路，或者分别与旁通管路的两端连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置的结构简单，制造成本低，主管道内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述第一端口和所述第二端口设于所述连接件的同一端。
如此，使得第一端口和第二端口可以分别与位于同一管体内的第一主通道和第二主通道直接相连， 简化了连接结构，进一步降低制造成本。
在一些实施例中，所述分隔板的远离所述连接件的一端形成有通孔，所述第一阀安装于所述通孔，在所述浆料输送状态下，所述第一阀调节至闭合状态，以使得所述第一主通道和所述第二主通道彼此非连通，在所述浆料循环状态下，所述第一阀调节至打开状态，以使得所述第一主通道和所述第二主通道彼此连通。
第一阀通过打开或闭合来调节第一主通道和第二主通道彼此连通或彼此非连通的状态，进行输送线路和循环回路的切换。将第一阀设置在分隔板的远离连接件的一端，使得浆料在第一主通道和第二主通道内流动的距离比较远，使得浆料尽可能多的处于较快速的流动状态，更好地降低凝胶的几率。
在一些实施例中，所述浆料输送装置还包括第二阀，所述第二阀安装于所述出料管路靠近所述主管路的一端，在所述浆料输送状态下，所述第二阀调节至打开状态，以使得所述出料管路和所述主管路相连通，在所述浆料循环状态下，所述第二阀调节至闭合状态，以使得所述出料管路和所述主管路非连通。
通过第二阀的设置，实现了主管路和出料管路相连通或非连通的调节，使得主管路能够与出料管路连通形成输送管路，或者与旁通管路连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置的结构简单，制造成本低，主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述出料管路的远离所述主管路的一端伸入浆料罐内，在所述浆料输送状态下，从所述入料管道输送来的浆料依次经过所述主管路和所述出料管路进入所述浆料罐内。
将浆料输送到浆料罐内，以供极片涂布装置进行涂布作业使用。
在一些实施例中，所述入料管道连接有第一泵，在所述浆料输送状态下，所述第一泵驱使浆料在所述主管路和所述出料管路内进行流动；所述旁通管路连接有第二泵，在所述浆料循环状态下，所述第二泵驱使所述循环回路内的浆料在所述循环回路内循环流动。
第一泵为浆料的输送提供动力，第二泵为浆料在循环回路循环流动提供动力，实现了两种状态下浆料的流动，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，浆料输送装置的结构简单，制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述出料管路沿着竖直方向延伸。
将出料管路设置为沿着竖直方向延伸，使得出料管路内浆料在重力的作用下向下流动，有利于节省第一泵的能量，而且，在浆料循环状态时，出料管路内的浆料不易沉降在出料管路的内壁，从而降低了凝胶的几率。
本公开的第二方面提供一种电池涂布线，包括：浆料制备装置，用于制备浆料；上述的浆料输送装置；极片涂布装置，用于将浆料涂覆于集流体上而成为极片；其中，所述浆料输送装置用于将经所述浆料制备装置制备好的浆料输送给所述极片涂布装置。
由于电池涂布线包括浆料输送装置，电池涂布线包括浆料输送装置的所有有益效果，因此，电池涂布线的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
本公开的第三方面提供一种浆料输送方法，使用浆料输送装置，所述浆料输送装置包括主管路、旁 通管路及出料管路，所述旁通管路连接于所述主管路，所述出料管路的一端连接于所述主管路的一端，另一端用于输出浆料；
所述浆料输送方法包括：
浆料输送步骤，使所述主管路和所述旁通管路非连通，且所述主管路和所述出料管路相连通，并对从入料管道输送来的浆料进行输送；
浆料循环步骤，使所述主管路和所述出料管路非连通，且所述主管路和所述旁通管路相连通并形成循环回路，使浆料在所述循环回路内循环流动，
所述浆料循环步骤在所述浆料输送步骤停止的状态下进行；
所述主管路包括第一主通道和第二主通道，所述第一主通道具有第一通道口和第二通道口，所述第二主通道具有第三通道口和第四通道口，所述第一主通道的所述第一通道口和所述第二主通道的所述第三通道口分别连接于所述入料管道，所述第一主通道的所述第二通道口和所述第二主通道的所述第四通道口分别连接于所述出料管路，所述第一主通道和所述第二主通道之间设有第一阀，所述第一阀用于使所述第一主通道和所述第二主通道彼此连通或彼此非连通；
所述浆料输送步骤包括：
输送路线连通步骤，使所述第一主通道和所述第二主通道分别与所述出料管路相连通，所述第一主通道和所述第二主通道均与所述旁通管路非连通，且通过所述第一阀使所述第一主通道和所述第二主通道彼此非连通；
驱使浆料输送步骤，使从所述入料管道输送来的浆料分为两路并分别经过所述第一主通道和所述第二主通道进入所述出料管路；
所述浆料循环步骤包括：
循环路线连通步骤，使所述第一主通道和所述第二主通道分别与所述旁通管路相连通，所述第一主通道和所述第二主通道均与所述出料管路非连通，且通过所述第一阀使所述第一主通道和所述第二主通道彼此连通；
驱使浆料循环步骤，使所述第一主通道和所述第二主通道内的浆料循环流经所述第一主通道、所述第二主通道和所述旁通管路。
先切换路线，使得主管路与出料管路连通形成输送管路，或与旁通管路连通形成循环回路，从而实现输送管路和循环回路的切换，然后使浆料在各自的管路内流动，实现浆料的输送或循环流动，如此，使得主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，通过改变主管路与旁通管路和出料管路的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置的结构比较简单，浆料输送装置的制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在一些实施例中，所述浆料输送装置还包括第二阀，所述第二阀安装于所述出料管路靠近所述主管路的一端；
在所述输送路线连通步骤中，所述第二阀调节至打开状态，使得所述第一主通道和所述第二主通道分别与所述出料管路相连通，
在所述循环路线连通步骤中，所述第二阀调节至闭合状态，使得所述第一主通道和所述第二主通道 均与所述出料管路非连通。
通过第二阀的调节，实现了主管路和出料管路相连通或非连通的调节，使得主管路能够与出料管路连通形成输送管路，或者与旁通管路连通形成循环回路，从而实现输送管路和循环回路的切换。
在一些实施例中，所述入料管道连接有第一泵，所述旁通管路连接有第二泵；
在所述驱使浆料输送步骤中，所述第一泵启动，驱使从所述入料管道输送来的浆料分为两路并分别经过所述第一主通道和所述第二主通道进入所述出料管路；
在所述驱使浆料循环步骤中，所述第二泵启动，驱使所述第一主通道和所述第二主通道内的浆料循环流经所述第一主通道、所述第二主通道和所述旁通管路。
第一泵驱使浆料在输送管路中流动，第二泵驱使浆料在循环回路中循环流动，实现了两种状态下浆料的流动，以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，浆料输送装置的结构简单，制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
发明效果
通过本公开，提供一种能够降低电池制造成本的浆料输送装置、电池涂布线及浆料输送方法。
附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本公开的限制。而且在全部附图中，用相同的附图标记表示相同的部件。在附图中：
图1为本公开的一些实施例提供的浆料输送装置的一种结构的示意图；
图2为图1中A处的放大图；
图3为本公开的一些实施例提供的主管路的内部结构的俯视图；
图4为本公开的一些实施例提供的主管路的侧视图；
图5为本公开的一些实施例提供的浆料输送装置的另一种结构的示意图；
图6为本公开的一些实施例提供的电池涂布线的结构示意图；
图7为本公开的一些实施例提供的浆料输送方法的一种流程图；
图8为本公开的一些实施例提供的浆料输送方法的另一种流程图。
附图标记说明
10浆料输送装置；20浆料制备装置；30极片涂布装置；
1主管路；11第一主通道；111第一通道口；112第二通道口；12第二主通道；121第三通道口；
122第四通道口；13管体；14分隔板；2旁通管路；3出料管路；4入料管道；51第一阀；52第二阀；53第三阀；54第四阀；55第五阀；6连接件；61第一端口；62第二端口；63第三端口；64第四端口；65第五端口；7浆料罐；81第一泵；82第二泵。
具体实施方式
下面将结合附图对本公开技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本公开的技术方案，因此只作为示例，而不能以此来限制本公开的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本公开的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本公开；本公开的说明书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本公开实施例的描述中，技术术语“第一”“第二”“第三”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本公开实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本公开的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本公开实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是“或”的关系。
在本公开实施例的描述中，技术术语“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开实施例和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造、操作或使用，因此不能理解为对本公开实施例的限制。
在本公开实施例的描述中，除非另有明确的规定和限定，技术术语“安装”“相连”“连接”“固定”等术语应作广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；也可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开实施例中的具体含义。
在本公开实施例的描述中，除非另有明确的规定和限定，技术术语“接触”应作广义理解，可以是直接接触，也可以是隔着中间媒介层的接触，可以是相接触的两者之间基本上没有相互作用力的接触，也可以是相接触的两者之间具有相互作用力的接触。
下面，对本公开进行详细说明。
目前，新能源电池在生活和产业中的应用越来越广泛。新能源电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
本公开实施例中，电池可以是电池单体。
电池单体可以为二次电池，二次电池是指在电池单体放电后可通过充电的方式使活性材料激活而继 续使用的电池单体。
电池单体包括电极组件。电极组件包括正极极片、负极极片以及隔离件。在电池单体充放电过程中，活性离子(例如锂离子)在正极极片、负极极片之间往返嵌入和脱出。隔离件设置在正极极片、负极极片之间，可以起到防止正负极短路的作用，同时可以使活性离子通过。
正极极片和负极极片的制备步骤包括：通过浆料制备装置将正极和负极的活性材料(如氧化物、石墨等)分散在溶剂中，形成浆料。这些浆料通常包含活性材料、导电剂、粘合剂等；然后，通过涂布装置将制备好的电极浆料涂覆到集流体(如铝箔或铜箔)上。
在上述制备步骤中，需要利用浆料输送装置将经浆料制备装置制成的浆料向涂布装置输送，以供涂布装置进行涂布使用，从而完成电池的极片的制备工艺。电池的浆料是将溶剂、活性物质、导电剂、粘接剂、增稠剂及其他的添加剂按一定配比混合搅拌成固液混合物，浆料在通过浆料输送装置进行输送的过程中，一旦浆料停止移动，浆料极易由于沉降而凝胶。
本公开的发明人注意到，现有的浆料输送装置多采用对管道内的残余浆料进行清除的方式来降低浆料在管道内凝胶的几率，以便于浆料输送装置的下一次正常使用。例如，一种残渣的清除方式是采用连接有刮片的推球在管道内移动，推球在管道内移动的过程中，刮片刮除管道内的残余浆料，实现对管道的清洁，该种浆料输送装置设有驱动推球运动的动力装置以及用于装入和取出推球的相关结构等，使得浆料输送装置的结构复杂，导致浆料输送装置的制造成本高，而且，管道的大多部位需要在浆料停止流动较长时间后才有推球经过，在此较长的时间段内残余的浆料很容易发生凝胶，导致管道清洁的不干净，需要较多频次的拆卸下来清除凝胶的操作，使得浆料输送装置的使用成本较高。因此，本公开的发明人注意到通过降低浆料输送装置的制造成本及使用成本可以很大程度上降低电池的生产成本。
本公开的发明人经过研究发现，代替清除残余浆料的方式而采用将残余浆料循环流动的方式，可以使得残余浆料处于流动状态，能够很好的降低浆料在管道内凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，采用残余浆料循环流动方式的浆料输送装置通过改变管路的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置的结构比较简单，浆料输送装置的制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
基于这样的设计构思，本公开的发明人设计了一种浆料输送装置，其包括主管路、旁通管路及出料管路，旁通管路连接于主管路，出料管路的一端连接于主管路的一端，另一端用于输出浆料，浆料输送装置具有浆料输送状态和浆料循环状态，在浆料输送状态下，主管路和旁通管路非连通，主管路和出料管路相连通，以对从入料管道输送来的浆料进行输送，在浆料循环状态下，主管路和出料管路非连通，主管路和旁通管路相连通并形成供浆料循环流动的循环回路。
在需要输送浆料时，使浆料输送装置处于浆料输送状态，主管路和旁通管路非连通，主管路和出料管路相连通，并对从入料管道输送来的浆料进行输送；在浆料输送结束后，使浆料输送装置处于浆料循环状态，主管路和出料管路非连通，主管路和旁通管路相连通并形成循环回路，使浆料输送装置中残余的浆料在循环回路中循环流动，如此，主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，通过改变主管路与旁通管路和出料管路的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装 置的结构比较简单，浆料输送装置的制造成本低，也即，浆料输送装置的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
本公开实施例的浆料输送装置可以用于电池生产过程中，例如用于将电池浆料向极片涂布装置进行输送等，当然，本领域技术人员应当理解，本公开实施例提供的浆料输送装置不仅仅用于对电池生产制造过程中的浆料输送，也可以用于对其他需要输送的易沉降的浆料进行输送。
下面，参照图1至图8对本公开的一些实施例进行详细的说明。
图1为本公开的一些实施例提供的浆料输送装置的一种结构的示意图；图2为图1中A处的放大图；图3为本公开的一些实施例提供的主管路的内部结构的俯视图；图4为本公开的一些实施例提供的主管路的侧视图；图5为本公开的一些实施例提供的浆料输送装置的另一种结构的示意图。
如图1所示，本公开的第一方面提供一种浆料输送装置10，包括主管路1、旁通管路2及出料管路3，旁通管路2连接于主管路1；出料管路3的一端连接于主管路1的一端，另一端用于输出浆料；浆料输送装置10具有浆料输送状态和浆料循环状态，在浆料输送状态下，主管路1和旁通管路2非连通，主管路1和出料管路3相连通，以对从入料管道4输送来的浆料进行输送，在浆料循环状态下，主管路1和出料管路3非连通，主管路1和旁通管路2相连通并形成供浆料循环流动的循环回路。
“连通”是指两个相连的管路的内部通道是相通的，可以提供给浆料流动的通路。“非连通”是指两个相连的管路中的至少一个的内部通道内有阻挡或者两个通道的连接处有阻挡，使得两个相连的管路形成的管路组是不通的，未提供给浆料流动的通路，也就是说不允许浆料流过。因此，在浆料输送状态下，主管路1和旁通管路2非连通，主管路1和旁通管路2形成的管路组不允许浆料流过，而主管路1和出料管路3相连通，主管路1和出料管路3形成的管路组(之后称为输送管路)允许浆料流过，因此，从主管路1远离出料管路3的一端进入的浆料能够依次流经主管路1和出料管路3，从而对浆料进行输送。在浆料循环状态下，主管路1和出料管路3非连通，主管路1和出料管路3形成的管路组不允许浆料流过，主管路1和旁通管路2相连通，主管路1和旁通管路2形成的管路组(循环回路)允许浆料流过，也即，浆料能够在循环回路内循环流动。
在需要输送浆料时，使浆料输送装置处于浆料输送状态，主管路1和旁通管路2非连通，主管路1和出料管路3相连通，并对从入料管道4输送来的浆料进行输送；在浆料输送结束后，使浆料输送装置10处于浆料循环状态，主管路1和出料管路3非连通，主管路1和旁通管路2相连通并形成循环回路，浆料输送装置10中残余的浆料在循环回路中循环流动，如此，主管道内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，而且，通过改变主管路1与旁通管路2和出料管路3的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置10的结构比较简单，浆料输送装置10的制造成本低，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，主管路1包括第一主通道11和第二主通道12，第一主通道11具有第一通道口111和第二通道口112，第二主通道12具有第三通道口121和第四通道口122，第一主通道11的第一通道口111和第二主通道12的第三通道口121分别连接于入料管道4，第一主通道11的第二通道口112和第二主通道12的第四通道口122分别连接于出料管路3，第一主通道11和第二主通道12之间设有第一阀51，第一阀51用于使第一主通道11和第二主通道12彼此连通或彼此非连通。
“彼此连通”是指两个通道的连接处是相通的，是指一个通道内的浆料可以通过二者的连接处进入另一个通道内。“彼此非连通”是指两个通道的连接处具有阻挡，两个通道之间是不通的，是相互隔绝的，是指各通道内的浆料无法进入另一个通道内。第一主通道11和第二主通道12彼此连通时，第一主通道11内的浆料可以进入第二主通道12内，和/或，第二主通道12内的浆料可以进入第一主通道11内。第一主通道11和第二主通道12彼此非连通时，第一主通道11和第二主通道12相互隔绝，第一主通道11内的浆料无法进入第二主通道12内，且第二主通道12内的浆料也无法进入第一主通道11内。
通过第一阀51使得第一主通道11和第二主通道12彼此非连通，从入料管道4输入的浆料分为两路，两路浆料分别经过第一主通道11和第二主通道12进入出料管路3内，对浆料进行输送；通过第一阀51使得第一主通道11和第二主通道12彼此连通，能够使得第一主通道11和第二主通道12与旁通管路2形成循环回路，供残余的浆料循环流动。
主管路1的第一主通道11和第二主通道12可以分别设置在两个管体内，也可以设在同一个管体内。
如此，可以使得主管路1和出料管路3连通形成输送管路，主管路1和旁通管路2连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，如图1、图3和图4所示，主管路1包括管体13和设置于管体13内的分隔板14，分隔板14将管体13内的通道分隔为第一主通道11和第二主通道12，第一阀51设置于分隔板14。
使用分隔板14将管体13内的通道分隔为第一主通道11和第二主通道12，减少了管路的数量，节约成本，使得结构紧凑，占用的空间小，而且，在分隔板14设置第一阀51，通过第一阀51的开闭可以切换第一主通道11和第二主通道12的彼此连通和彼此非连通的状态，结构简单，切换操作简捷。
在本公开的一些实施例中，浆料输送装置10还包括连接件6，连接件6分别连接于主管路1、出料管路3和旁通管路2。
连接件6的设置，实现了主管路1、出料管路3和旁通管路2之间的相互连接，使得主管路1能够与出料管路3连通形成输送管路，或者与旁通管路2连通形成循环回路。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，如图2所示，连接件6具有第一端口61、第二端口62、第三端口63、第四端口64和第五端口65，第一端口61与第一主通道11的第二通道口112相连，第二端口62与第二主通道12的第四通道口122相连，第三端口63和第四端口64分别与旁通管路的两端相连，第五端口65和出料管路相连。
连接件6可以为仅用于连接第一主通道11、第二主通道12、出料管路3和旁通管路2的连接结构，也可以为既能够连接也能够调节各端口之间连通与非连通状态的阀门。
如此，实现了第一主通道11、第二主通道12、出料管路3和旁通管路2之间的相互连接，使得第一 主通道11、第二主通道12能够与出料管路3连通形成输送管路，或者与旁通管路2连通形成循环回路。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，第一端口61连通于第三端口63和第五端口65，第二端口62连通于第四端口64和第五端口65，第一端口61和第二端口62非连通，第三端口63和第四端口64非连通。
此连接件6为仅用于连接第一主通道11、第二主通道12、出料管路3和旁通管路2的连接结构，可以通过配合设置在旁通管路2和出料管路3上的阀门来实现第一主通道11和第二主通道12与旁通管路2和出料管路3的非连通或相连通的状态。
示例性的，如图1和图2所示，在旁通管路2的两端分别设置第三阀53和第四阀54，第三阀53接近第三端口63设置，第四阀54接近第四端口64设置，出料管路3靠近第五端口65的一端设置有第二阀52。在浆料输送状态下，第三阀53和第四阀54均关闭，使得第一主通道11和第二主通道12均与旁通管路2非连通，第二阀52打开，使得第一主通道11和第二主通道12均与出料管路3相连通；在浆料循环状态下，第三阀53和第四阀54均打开，使得第一主通道11和第二主通道12均与旁通管路2连通，形成循环回路，第二阀52关闭，使得第一主通道11和第二主通道12均与出料管路3非连通。
在浆料输送状态下，如图1和图2所示，图1中的直线箭头指示浆料的流动方向，从入料管道4输入的浆料分为两路，两路浆料分别经过第一主通道11和第二主通道12并分别通过连接件6的第一端口61和第二端口62进入连接件6内，并且均通过第五端口65进入出料管路3内，实现对浆料的输送；在浆料循环状态下，如图2和图5所示，图5中的直线箭头指示浆料的流动方向，在浆料输送停止后，存留在第一主通道11和第二主通道12内的浆料依次循环流经第一主通道11、第一阀51、第二主通道12、第二端口62、第四端口64、旁通管路2、第三端口63和第一端口61，实现残余浆料的循环流动。
如此，通过对连接件6的各端口之间的连通状态的限定，使得第一主通道11、第二主通道12能够分别与出料管路3连通形成输送管路，或者分别与旁通管路2的两端连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，连接件6为具有调节各端口之间连通或非连通功能的阀门，在浆料输送状态下，连接件6调节至第一端口61仅连通于第五端口65，第二端口62仅连通于第五端口65；在浆料循环状态下，连接件6调节至第一端口61仅连通于第三端口63，第二端口62仅连通于第四端口64。
第一端口61仅连通于第五端口65，第二端口62仅连通于第五端口65，使得从第一主通道11和第二主通道12流出的浆料分别通过第一端口61和第二端口62流到第五端口65，继而输送到出料管路3。第一端口61仅连通于第三端口63，第二端口62仅连通于第四端口64，可以使得从第二主通道12流入的浆料能够通过第二端口62进入连接件6，并通过第四端口64进入旁通管路2内，并通过第三端口63进入连接件6，再通过第一端口61流出并进入第一主通道11内，第一主通道11内的浆料经过第一阀51进入第二主通道12，如上循环，实现了浆料在循环回路内的循环流动。
在连接件6为具有调节功能的阀门的情况下，旁通管路2上可以不设置第三阀53和第四阀54，出料 管路3上可以不设置第二阀52。当然，也可以在旁通管路2上设置第三阀53和第四阀54，出料管路3上设置第二阀52。
如此，实现了第一主通道11和第二主通道12与出料管路3和旁通管路2的连通或非连通的调节，使得第一主通道11、第二主通道12能够与出料管路3连通形成输送管路，或者与旁通管路2连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置10的结构简单，制造成本低，主管道内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，第一端口61和第二端口62设于连接件6的同一端。
如此，使得第一端口61和第二端口62可以分别与位于同一管体13的第一主通道11和第二主通道12直接相连，简化了连接结构，进一步降低制造成本。
在本公开的一些实施例中，第一端口61和第二端口62设于连接件6的同一端，第五端口65设于连接件6的与第一端口61相对的另一端，第三端口63和第四端口64分别设置于连接件6的相对两端，第三端口63与第四端口64相对的方向和第五端口65与第一端口61相对的方向相互垂直。
如此，使得连接件6的各个端口的布局比较均匀，有利于减小连接件6的尺寸，而且，使得各个端口周围的空间比较大，便于管路和连接件6的连接操作。
在本公开的一些实施例中，如图1和图3所示，分隔板14的远离连接件6的一端形成有通孔，第一阀51安装于通孔，在浆料输送状态下，第一阀51调节至闭合状态，以使得第一主通道11和第二主通道12彼此非连通，在浆料循环状态下，第一阀51调节至打开状态，以使得第一主通道11和第二主通道12彼此连通。
第一阀51通过打开或闭合来调节第一主通道11和第二主通道12彼此连通或彼此非连通的状态，进行输送线路和循环回路的切换。将第一阀51设置在分隔板14的远离连接件6的一端，使得浆料在第一主通道11和第二主通道12内流动的距离比较远，使得浆料尽可能多的处于较快速的流动状态，更好地降低凝胶的几率。
在本公开的一些实施例中，第一阀51包括单向阀或双向阀。
单向阀和双向阀均可以实现第一主通道11和第二主通道12彼此连通或彼此非连通的调节，可选的范围广，有利于降低成本。
在本公开的一些实施例中，浆料输送装置10还包括第二阀52，第二阀52安装于出料管路3靠近主管路1的一端，在浆料输送状态下，第二阀52调节至打开状态，以使得出料管路3和主管路1相连通，在浆料循环状态下，第二阀52调节至闭合状态，以使得出料管路3和主管路1非连通。
通过第二阀52的设置，实现了主管路1和出料管路3相连通或非连通的调节，使得主管路1能够与出料管路3连通形成输送管路，或者与旁通管路2连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，出料管路3的远离主管路1的一端伸入浆料罐7内，在浆料输送状态下， 从入料管道4输送来的浆料依次经过主管路1和出料管路3进入浆料罐7内。
将浆料输送到浆料罐7内，以供极片涂布装置30进行涂布作业使用。
在本公开的一些实施例中，入料管道4连接有第一泵81，在浆料输送状态下，第一泵81驱使浆料在主管路1和出料管路3内进行流动；旁通管路2连接有第二泵82，在浆料循环状态下，第二泵82驱使循环回路内的浆料在循环回路内循环流动。
第一泵81为浆料的输送提供动力，第二泵82为浆料在循环回路循环流动提供动力，实现了两种状态下浆料的流动，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，而且，浆料输送装置10的结构简单，制造成本低，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，第一泵81包括螺杆泵，第二泵82包括隔膜泵。
在浆料输送状态下，浆料的流量比较大，使用功率较大的螺杆泵比较合适，而在浆料循环状态下，循环回路内流动的浆料的流量比较小，使用功率较小的隔膜泵比较合适，既能够使得浆料以适宜的流量流动，还有利于抑制成本。
在本公开的一些实施例中，第二泵82的输送流量可调，第二泵82调节的输送流量不大于150L/min。
示例性的，第二泵82调节的输送流量可以为80L/min、85L/min、90L/min、95L/min、100L/min、105L/min、110L/min、115L/min、120L/min、125L/min、130L/min、135L/min、140L/min、145L/min或150L/min等。
在本公开的一些实施例中，出料管路3沿着竖直方向延伸。
将出料管路3设置为沿着竖直方向延伸，使得出料管路3内浆料在重力的作用下向下流动，有利于节省第一泵81的能量，而且，在浆料循环状态时，出料管路3内的浆料不易沉降在出料管路3的内壁，从而降低了凝胶的几率。
在本公开的一些实施例中，分隔板14和管体13一体成形。
如此，提高了主管路1整体的结构强度，而且制造效率高。
在本公开的一些实施例中，入料管道4连接主管路1的一端设有第五阀55，在浆料输送状态下，第五阀55处于打开状态，入料管道4和主管路1的第一主通道11和第二主通道12连通，使得从入料管道4进入的浆料可以进入第一主通道11和第二主通道12内；在浆料循环状态下，第五阀55处于闭合状态，第一主通道11和第二主通道12均与入料管道4非连通，且第五阀55封闭第一主通道11的第一通道口111和第二主通道12的第三通道口121，使得在浆料循环状态下浆料不会倒流到入料管道4内。
在本公开的一些实施例中，管体13的材质采用硬质工程塑料。
示例性的，管体13的材质采用聚酰胺、聚四氟乙烯、聚醚醚酮、聚苯硫醚、聚碳酸酯和聚苯醚中的至少一者。
硬质工程塑料的机械强度高，摩擦系数低，耐磨性强，且容易获得。
图6为本公开的一些实施例提供的电池涂布线的结构示意图。
如图6所示，本公开的第二方面提供一种电池涂布线，包括浆料制备装置20、极片涂布装置30及本公开第一方面提供的浆料输送装置10，浆料制备装置20用于制备浆料，极片涂布装置30用于将浆料涂覆于集流体上而成为极片；其中，浆料输送装置10用于将经浆料制备装置20制备好的浆料输送给极片涂布装置30。
在浆料输送状态下，浆料输送装置10输送浆料供极片涂布装置30使用，在浆料循环状态下，循环回路中的浆料在循环回路中循环流动。
由于电池涂布线包括浆料输送装置10，电池涂布线包括浆料输送装置10的所有有益效果，因此，电池涂布线的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
图7为本公开的一些实施例提供的浆料输送方法的一种流程图；图8为本公开的一些实施例提供的浆料输送方法的另一种流程图。
在本公开的第三方面提供一种浆料输送方法，使用浆料输送装置10，浆料输送装置10包括主管路1、旁通管路2及出料管路3，旁通管路2连接于主管路1，出料管路3的一端连接于主管路1的一端，另一端用于输出浆料；
如图7所示，浆料输送方法包括：
S1，浆料输送步骤：使主管路和旁通管路非连通，且主管路和出料管路相连通，并对从入料管道输送来的浆料进行输送；
S2，浆料循环步骤：使主管路和出料管路非连通，且主管路和旁通管路相连通并形成循环回路，使浆料在循环回路内循环流动，
浆料循环步骤在浆料输送步骤停止的状态下进行。
需要说明的是，浆料输送步骤和浆料循环步骤不分先后顺序，在浆料输送步骤停止时进行浆料循环步骤，在需要进行浆料输送步骤时就停止进行浆料循环步骤。
在浆料输送步骤中，浆料经过主管路1和出料管路3进行输送，在浆料循环步骤中，主管路1内的浆料在主管路1和旁通管路2形成的循环回路内循环流动，如此，使得主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，而且，通过改变主管路1与旁通管路2和出料管路3的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置10的结构比较简单，浆料输送装置10的制造成本低，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，主管路1包括第一主通道11和第二主通道12，第一主通道11具有第一通道口111和第二通道口112，第二主通道12具有第三通道口121和第四通道口122，第一主通道11的第一通道口111和第二主通道12的第三通道口121分别连接于入料管道4，第一主通道11的第二通道口112和第二主通道12的第四通道口122分别连接于出料管路3，第一主通道11和第二主通道12之间设有第一阀51，第一阀51用于使第一主通道11和第二主通道12彼此连通或彼此非连通；
如图8所示，浆料输送步骤包括：
S11，输送路线连通步骤：使第一主通道和第二主通道分别与出料管路相连通，第一主通道和第二主通道均与旁通管路非连通，且通过第一阀使第一主通道和第二主通道彼此非连通；
S12，驱使浆料输送步骤：使从入料管道输送来的浆料分为两路并分别经过第一主通道和第二主通道进入出料管路；
浆料循环步骤包括：
S21，循环路线连通步骤：使第一主通道和第二主通道分别与旁通管路相连通，第一主通道和第二主通道均与出料管路非连通，且通过第一阀使第一主通道和第二主通道彼此连通；
S22，驱使浆料循环步骤：使第一主通道和第二主通道内的浆料循环流经第一主通道、第二主通道和旁通管路。
如此，先切换路线，使得主管路1与出料管路3连通形成输送管路，或与旁通管路2连通形成循环回路，从而实现输送管路和循环回路的切换，然后使浆料在各自的管路内流动，实现浆料的输送或循环流动，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，而且，浆料输送装置10的结构简单，制造成本低，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，浆料输送装置10还包括第二阀52，第二阀52安装于出料管路3靠近主管路1的一端；
在输送路线连通步骤中，第二阀52调节至打开状态，使得第一主通道11和第二主通道12分别与出料管路3相连通；
在循环路线连通步骤中，第二阀52调节至闭合状态，使得第一主通道11和第二主通道12均与出料管路3非连通。
通过第二阀52的调节，实现了主管路1和出料管路3相连通或非连通的调节，使得主管路1能够与出料管路3连通形成输送管路，或者与旁通管路2连通形成循环回路，从而实现输送管路和循环回路的切换。而且，浆料输送装置10的结构简单，制造成本低，主管路1内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
在本公开的一些实施例中，入料管道4连接有第一泵81，旁通管路2连接有第二泵82；
在驱使浆料输送步骤中，第一泵81启动，驱使从入料管道4输送来的浆料分为两路并分别经过第一主通道11和第二主通道12进入出料管路3；
在驱使浆料循环步骤中，第二泵82启动，驱使第一主通道11和第二主通道12内的浆料循环流经第一主通道11、第二主通道12和旁通管路2。
第一泵81驱使浆料在输送管路中流动，第二泵82驱使浆料在循环回路中循环流动，实现了两种状态下浆料的流动，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置10的使用成本，而且，浆料输送装置10的结构简单，制造成本低，也即，浆料输送装置10的使用成本和制造成本均得以降低，从而降低了电池的制造成本。
下面，结合附图说明本公开的一些实施例的具体例子。
作为一个具体的例子，浆料输送装置10包括主管道(主管路1)、旁通管道(旁通管路2)和出料管(出料管路3)，旁通管道和出料管分别连接于主管道，出料管的远离主管道的一端伸入容量为1200L的中转罐(浆料罐7)中，主管道的内部通道中设置有管道隔板(分隔板14)，管道隔板将内部通道分隔为第一流道(第一主通道11)和第二流道(第二主通道12)，管道隔板的远离旁通管道的一端设有单向阀(第一阀51)，主管道和出料管通过通断阀(连接件6)连接，旁通管道的两端分别连接于通断阀，出料管的靠近主管道的一端设有出料阀(第二阀52)，主管道的上游设有螺杆泵(第一泵81)，旁通管道连接有隔膜泵(第二泵82)。
当浆料输送装置10输送浆料时，出料阀打开，单向阀关闭，且通断阀调节第一流道和第二流道仅分 别与出料管连通，螺杆泵启动，浆料依次通过主管道和出料管进入中转罐内；当浆料输送装置10停止输送浆料时，出料阀关闭，单向阀打开，且通断阀调节第一流道和第二流道仅分别与旁通管道的两端连通，形成循环回路，螺杆泵关闭，隔膜泵启动，残留在第一流道和第二流道内的浆料在循环回路内循环流动。
隔膜泵的输送流量在0-150L/min内可调，隔膜泵的输送流量的推荐值为100L/min。
以上各实施例仅用以说明本公开的技术方案，而非对其限制；尽管参照前述各实施例对本公开进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本公开各实施例技术方案的范围，其均应涵盖在本公开的说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。
工业实用性
本公开提供了一种能够降低电池制造成本的浆料输送装置、电池涂布线及浆料输送方法，在需要输送浆料时，使浆料输送装置处于浆料输送状态，主管路和旁通管路非连通，主管路和出料管路相连通，并对从入料管道输送来的浆料进行输送；在浆料输送结束后，使浆料输送装置处于浆料循环状态，主管路和出料管路非连通，主管路和旁通管路相连通并形成循环回路，主管路中残余的浆料在循环回路中循环流动，如此，主管路内的浆料处于流动状态，可以降低由于静置而凝胶的几率，减少清除凝胶的操作次数，从而能够降低浆料输送装置的使用成本，而且，通过改变主管路与旁通管路和出料管路的连通状态便可以改变浆料的流动方向，实现残余浆料的循环流动，因此，该种浆料输送装置的结构比较简单，浆料输送装置的制造成本低。

Claims (15)

  1. 一种浆料输送装置，包括：
    主管路；
    旁通管路，连接于所述主管路；
    出料管路，其一端连接于所述主管路的一端，另一端用于输出浆料；
    其中，所述浆料输送装置具有浆料输送状态和浆料循环状态，在所述浆料输送状态下，所述主管路和所述旁通管路非连通，所述主管路和所述出料管路相连通，以对从入料管道输送来的浆料进行输送，在所述浆料循环状态下，所述主管路和所述出料管路非连通，所述主管路和所述旁通管路相连通并形成供浆料循环流动的循环回路；
    所述主管路包括第一主通道和第二主通道，所述第一主通道具有第一通道口和第二通道口，所述第二主通道具有第三通道口和第四通道口，
    所述第一主通道的所述第一通道口和所述第二主通道的所述第三通道口分别连接于所述入料管道，
    所述第一主通道的所述第二通道口和所述第二主通道的所述第四通道口分别连接于所述出料管路，所述第一主通道和所述第二主通道之间设有第一阀，所述第一阀用于使所述第一主通道和所述第二主通道彼此连通或彼此非连通。
  2. 根据权利要求1所述的浆料输送装置，其中，所述主管路包括管体和设置于所述管体内的分隔板，所述分隔板将所述管体内的通道分隔为所述第一主通道和所述第二主通道，所述第一阀设置于所述分隔板。
  3. 根据权利要求2所述的浆料输送装置，其中，所述浆料输送装置还包括连接件，所述连接件分别连接于所述主管路、所述出料管路和所述旁通管路。
  4. 根据权利要求3所述的浆料输送装置，其中，所述连接件具有第一端口、第二端口、第三端口、第四端口和第五端口，所述第一端口与所述第一主通道的所述第二通道口相连，所述第二端口与所述第二主通道的所述第四通道口相连，所述第三端口和所述第四端口分别与所述旁通管路的两端相连，所述第五端口和所述出料管路相连。
  5. 根据权利要求4所述的浆料输送装置，其中，所述第一端口连通于所述第三端口和所述第五端口，所述第二端口连通于所述第四端口和所述第五端口，所述第一端口和所述第二端口非连通，所述第三端口和所述第四端口非连通。
  6. 根据权利要求5所述的浆料输送装置，其中，所述第一端口和所述第二端口设于所述连接件的同一端。
  7. 根据权利要求2至6中任一项所述的浆料输送装置，其中，所述分隔板的远离所述连接件的一端形成有通孔，所述第一阀安装于所述通孔，
    在所述浆料输送状态下，所述第一阀调节至闭合状态，以使得所述第一主通道和所述第二主通道彼此非连通，
    在所述浆料循环状态下，所述第一阀调节至打开状态，以使得所述第一主通道和所述第二主通道彼此连通。
  8. 根据权利要求1至7中任一项所述的浆料输送装置，其中，所述浆料输送装置还包括第二阀，所述第二阀安装于所述出料管路靠近所述主管路的一端，
    在所述浆料输送状态下，所述第二阀调节至打开状态，以使得所述出料管路和所述主管路相连通，
    在所述浆料循环状态下，所述第二阀调节至闭合状态，以使得所述出料管路和所述主管路非连通。
  9. 根据权利要求1至8中任一项所述的浆料输送装置，其中，所述出料管路的远离所述主管路的一端伸入浆料罐内，在所述浆料输送状态下，从所述入料管道输送来的浆料依次经过所述主管路和所述出料管路进入所述浆料罐内。
  10. 根据权利要求1至9中任一项所述的浆料输送装置，其中，所述入料管道连接有第一泵，在所述浆料输送状态下，所述第一泵驱使浆料在所述主管路和所述出料管路内进行流动；
    所述旁通管路连接有第二泵，在所述浆料循环状态下，所述第二泵驱使所述循环回路内的浆料在所述循环回路内循环流动。
  11. 根据权利要求1至10中任一项所述的浆料输送装置，其中，所述出料管路沿着竖直方向延伸。
  12. 一种电池涂布线，包括：
    浆料制备装置，用于制备浆料；
    权利要求1至11中任一项所述的浆料输送装置；
    极片涂布装置，用于将浆料涂覆于集流体上而成为极片；
    其中，所述浆料输送装置用于将经所述浆料制备装置制备好的浆料输送给所述极片涂布装置。
  13. 一种浆料输送方法，使用浆料输送装置，所述浆料输送装置包括主管路、旁通管路及出料管路，所述旁通管路连接于所述主管路，所述出料管路的一端连接于所述主管路的一端，另一端用于输出浆料；
    所述浆料输送方法包括：
    浆料输送步骤，使所述主管路和所述旁通管路非连通，且所述主管路和所述出料管路相连通，并对从入料管道输送来的浆料进行输送；
    浆料循环步骤，使所述主管路和所述出料管路非连通，且所述主管路和所述旁通管路相连通并形成循环回路，使浆料在所述循环回路内循环流动，
    所述浆料循环步骤在所述浆料输送步骤停止的状态下进行；
    所述主管路包括第一主通道和第二主通道，所述第一主通道具有第一通道口和第二通道口，所述第二主通道具有第三通道口和第四通道口，所述第一主通道的所述第一通道口和所述第二主通道的所述第三通道口分别连接于所述入料管道，所述第一主通道的所述第二通道口和所述第二主通道的所述第四通道口分别连接于所述出料管路，所述第一主通道和所述第二主通道之间设有第一阀，所述第一阀用于使所述第一主通道和所述第二主通道彼此连通或彼此非连通；
    所述浆料输送步骤包括：
    输送路线连通步骤，使所述第一主通道和所述第二主通道分别与所述出料管路相连通，所述第一主通道和所述第二主通道均与所述旁通管路非连通，且通过所述第一阀使所述第一主通道和所述第二主通道彼此非连通；
    驱使浆料输送步骤，使从所述入料管道输送来的浆料分为两路并分别经过所述第一主通道和所述第 二主通道进入所述出料管路；
    所述浆料循环步骤包括：
    循环路线连通步骤，使所述第一主通道和所述第二主通道分别与所述旁通管路相连通，所述第一主通道和所述第二主通道均与所述出料管路非连通，且通过所述第一阀使所述第一主通道和所述第二主通道彼此连通；
    驱使浆料循环步骤，使所述第一主通道和所述第二主通道内的浆料循环流经所述第一主通道、所述第二主通道和所述旁通管路。
  14. 根据权利要求13所述的浆料输送方法，其中，所述浆料输送装置还包括第二阀，所述第二阀安装于所述出料管路靠近所述主管路的一端；
    在所述输送路线连通步骤中，所述第二阀调节至打开状态，使得所述第一主通道和所述第二主通道分别与所述出料管路相连通，
    在所述循环路线连通步骤中，所述第二阀调节至闭合状态，使得所述第一主通道和所述第二主通道均与所述出料管路非连通。
  15. 根据权利要求13或14所述的浆料输送方法，其中，所述入料管道连接有第一泵，所述旁通管路连接有第二泵；
    在所述驱使浆料输送步骤中，所述第一泵启动，驱使从所述入料管道输送来的浆料分为两路并分别经过所述第一主通道和所述第二主通道进入所述出料管路；
    在所述驱使浆料循环步骤中，所述第二泵启动，驱使所述第一主通道和所述第二主通道内的浆料循环流经所述第一主通道、所述第二主通道和所述旁通管路。
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