CN221108806U - Slurry coating equipment - Google Patents

Abstract

The application relates to the technical field of coating equipment, and particularly provides slurry coating equipment. The slurry coating device comprises a die head mechanism; the die head mechanism comprises a die head body and an adjusting structure; the die head body is provided with a containing cavity, a feeding flow passage and a discharging flow passage, the feeding flow passage is used for feeding slurry into the containing cavity, the containing cavity is used for containing the slurry, and the discharging flow passage is used for allowing the slurry in the containing cavity to flow out of the die head body; the adjusting structure is movably arranged in the accommodating cavity and is used for adjusting the volume of the accommodating cavity so as to adjust the pressure of the slurry through the volume change of the accommodating cavity. The slurry coating equipment provided by the embodiment of the application can effectively improve the size uniformity of a coating layer formed on the current collector by the slurry, and improve the quality of the pole piece, and further, the quality of a lithium ion battery applying the pole piece can be improved.

Description

Slurry coating equipment

Technical Field

The application belongs to the technical field of coating equipment, and particularly relates to slurry coating equipment.

Background

With the development of new energy technology, batteries are increasingly widely used. The lithium battery is used as a novel battery with long cycle period, environmental protection, large capacity and high charge and discharge speed, and is widely applied to energy storage power supply systems such as hydraulic power, firepower, wind power, solar power stations and the like, and a plurality of fields such as electric tools, electric bicycles, electric motorcycles, electric automobiles, military equipment, aerospace and the like.

In the related art, a coating process is included in the manufacturing process of the lithium battery, that is, a die mechanism of a slurry coating device is used to coat positive electrode slurry on the surface of a positive electrode current collector or coat negative electrode slurry on a negative electrode current collector, and then the positive electrode slurry is dried into a membrane through an oven. In a particular application, a receiving cavity may be provided in the die mechanism for receiving the slurry, and the slurry in the receiving cavity may be extrusion coated onto the current collector through the slot.

However, in the prior art, the slurry in the die mechanism is easily uneven in weight during extrusion coating to the current collector. Therefore, the phenomenon of uneven size of a coating layer formed on the current collector is easy to occur, and the quality of the pole piece is poor, so that the quality of a lithium ion battery using the pole piece is reduced.

Disclosure of utility model

The application aims to provide slurry coating equipment so as to solve the problem that the coating layer formed by the existing slurry coating equipment has uneven size.

In order to solve the technical problems, the application is realized as follows:

The application discloses a slurry coating device, which comprises a die head mechanism;

the die head mechanism comprises a die head body and an adjusting structure;

the die head body is provided with a containing cavity, a feeding flow passage and a discharging flow passage, wherein the feeding flow passage is used for feeding slurry into the containing cavity, the containing cavity is used for containing the slurry, and the discharging flow passage is used for allowing the slurry in the containing cavity to flow out of the die head body;

The adjusting structure is movably arranged in the accommodating cavity and is used for adjusting the volume of the accommodating cavity so as to adjust the pressure of the slurry through the volume change of the accommodating cavity.

In some embodiments, the die body comprises: a first die and a second die distributed along a first direction (a); wherein,

The second die head is provided with a groove with a notch facing the first die head;

The first die head covers the second die head to enclose the groove to form the accommodating cavity;

a gasket can be clamped between the first die head and the second die head to form the discharge flow channel;

The adjusting structure is movably connected with the first die head or the second die head.

In some embodiments, the adjusting structure is movably connected to one end of the first die head facing the groove, and the adjusting structure is opposite to the accommodating cavity, and the adjusting structure can move towards or away from the accommodating cavity to adjust the volume of the accommodating cavity.

In some embodiments, the adjustment structure includes a first drive member and a first adjustment block coupled to the first drive member; wherein,

The first driving piece is partially embedded in the first die head and is used for driving the first adjusting block to move towards the accommodating cavity or move away from the accommodating cavity so as to adjust the volume of the accommodating cavity.

In some embodiments, a first avoiding part matched with the accommodating cavity is arranged at one end of the first die head facing the second die head, one end of the first driving piece is embedded into the first die head, and the other end of the first driving piece is exposed out of the first avoiding part so as to be connected with the first adjusting block, and the first driving piece is used for driving the first adjusting block to switch between a first state and a second state; wherein,

The first adjusting block is accommodated in the first avoiding portion when the first adjusting block is in the first state, and at least partially stretches into the accommodating cavity when the first adjusting block is in the second state so as to adjust the volume of the accommodating cavity.

In some embodiments, the adjusting structure is movably connected to the second die head, and the adjusting structure can at least partially extend into the accommodating cavity to adjust the volume of the accommodating cavity.

In some embodiments, the adjustment structure includes a second drive member and a second adjustment block coupled to the second drive member; wherein,

The second driving piece is connected to the second die head and is used for driving the second adjusting block to extend into the accommodating cavity or move out of the accommodating cavity so as to adjust the volume of the accommodating cavity.

In some embodiments, a second avoidance portion is arranged on one side of the accommodating cavity away from the first die head, and the second avoidance portion is communicated with the accommodating cavity;

One end of the second driving piece is embedded in the second die head, and the other end of the second driving piece is exposed in the second avoiding part and connected with the second adjusting block, and the second driving piece is used for driving the second adjusting block to switch between a third state and a fourth state; wherein,

And under the condition that the second regulating block is in the third state, the second regulating block is accommodated in the second avoiding part, and under the condition that the second regulating block is in the fourth state, the second regulating block at least partially stretches into the accommodating cavity so as to regulate the volume of the accommodating cavity.

In some embodiments, the adjustment structure comprises:

a bladder at least partially positioned within the containment cavity;

And the third driving piece is connected with the bag body and is used for driving the volume of the bag body to change so as to adjust the volume of the accommodating cavity through the volume change of the bag body.

In some embodiments, the extending direction of the accommodating cavity is a second direction (B), the number of the adjusting structures is a plurality, and the plurality of the adjusting structures are arranged at intervals along the second direction (B); and/or the number of the groups of groups,

The slurry coating equipment further comprises a controller and a detector, wherein the detector is used for sensing weight information of the slurry coated on the surface of the current collector and feeding back the weight information to the controller; the controller is used for sending an adjusting instruction to the adjusting structure according to the weight information fed back by the detector.

In the embodiment of the application, as the adjusting structure is arranged in the accommodating cavity of the die head mechanism of the slurry coating device, the adjusting structure is movably arranged in the accommodating cavity, and the adjusting structure can be used for adjusting the volume of the accommodating cavity so as to adjust the pressure of the slurry through the volume change of the accommodating cavity, so that the slurry pressure in the accommodating cavity is uniformly distributed. Therefore, the weight consistency of the slurry discharged from the accommodating cavity is good, the size uniformity of a coating layer formed on the current collector by the slurry is effectively improved, the quality of the pole piece is improved, and the quality of a lithium ion battery applying the pole piece is further improved.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic perspective view of a die mechanism of a slurry coating apparatus according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a die mechanism of a slurry coating apparatus according to an embodiment of the present application in a first state;

FIG. 3 is a schematic cross-sectional view of the die mechanism shown in FIG. 2 in a second state;

FIG. 4 is a schematic cross-sectional view of another die mechanism in a third state according to an embodiment of the application;

FIG. 5 is a schematic cross-sectional view of the die mechanism shown in FIG. 4 in a fourth state;

FIG. 6 is one of the schematic cross-sectional views of yet another die mechanism according to an embodiment of the application;

FIG. 7 is a second schematic cross-sectional view of the die mechanism shown in FIG. 6.

Reference numerals: 10-die head body, 101-holding cavity, 102-discharge flow channel, 103-first die head, 1031-first avoiding portion, 104-second die head, 1041-second avoiding portion, 1042-medium channel, 11-regulating structure, 111-first driving member, 112-first regulating block, 113-second driving member, 114-second regulating block, 115-capsule body, A-first direction, B-second direction.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a paste coating apparatus including a die mechanism including a die body 10 and an adjusting structure 11; wherein, the die head body 10 is provided with a feeding flow channel and a discharging flow channel 102, and the die head body 10 is internally provided with a containing cavity 101, the feeding flow channel is used for supplying slurry into the containing cavity 101, the containing cavity 101 can be used for containing the slurry, and the discharging flow channel 102 is used for supplying the slurry in the containing cavity 101 to flow out of the die head body 10 so as to coat on the surface of a current collector; the adjusting structure 11 is movably arranged in the accommodating cavity 101, the adjusting structure 11 is used for adjusting the volume of the accommodating cavity 101, and the pressure of the slurry is adjusted through the volume change of the accommodating cavity 101.

Specifically, the die body 10 may include a first die 103 and a second die 104, and the first die 103 and the second die 104 are distributed along the first direction a, that is, the first die 103 is stacked on the second die 104. The second die 104 is provided with a groove, the notch of the groove faces the first die 103, and the first die 103 covers the second die 104 to enclose the groove to form the accommodating cavity 101. In use of the slurry coating apparatus, a gasket is placed on the surface of the second die 104 facing the first die 103 so that the discharge flow path 102 is formed by being cushioned between the first die 103 and the second die 104, and the slurry in the accommodating chamber 101 can be discharged from the discharge flow path 102 under pressure; the adjusting structure 11 is movably connected to the first die 103 or the second die 104 to change the volume of the accommodating chamber 101 by the movement of the adjusting structure 11 so that the slurry in the accommodating chamber 101 is dynamically pressure-balanced. In some embodiments, the gasket is disposed on a side of the second die 104 remote from the inlet flow path, i.e., the inlet flow path, the receiving cavity 101, and the outlet flow path 102, along a third direction that intersects the first direction a. In some embodiments, the third direction and the first direction a are perpendicular to each other.

In practice, the first die 10 and the second die 11 may be two parts of a matched die. The first die 10 and the second die 11 may be connected by bolting, pinning, or notched connection.

In some embodiments, the slurry coating apparatus further comprises a controller and a detector, wherein the detector is used to sense weight information of the slurry coated on the surface of the current collector and feed back to the controller; the controller is used for sending an adjusting instruction to the adjusting structure 11 according to the weight information fed back by the detector. In some embodiments, the controller is in signal connection with the adjusting structure 11 for controlling whether the adjusting structure 11 adjusts the volume of the accommodating chamber 101 to adjust the pressure of the slurry, and the detector is also in signal connection with the controller, so that the detected and sensed weight information of the slurry coated on the surface of the current collector can be fed back to the controller.

In the embodiment of the application, since the accommodating cavity 101 of the die head mechanism is internally provided with the adjusting structure 11, the adjusting structure 11 is movably arranged in the accommodating cavity 101, and the adjusting structure 11 can be used for adjusting the volume of the accommodating cavity 101 so as to adjust the pressure of the slurry through the volume change of the accommodating cavity 101, so that the slurry pressure in the accommodating cavity 101 is uniformly distributed. In this way, the weight consistency of the slurry discharged from the discharge flow channel 102 is good, the size uniformity of a coating layer formed on the current collector by the slurry is effectively improved, the quality of the pole piece is improved, and further, the quality of a lithium ion battery using the pole piece is improved.

As shown in fig. 1, the extending direction of the accommodating chamber 101 is a second direction B, the number of the adjusting structures 11 is plural, and the plurality of adjusting structures 11 are arranged at intervals along the second direction B. In a specific application, the plurality of adjusting structures 11 can perform volume adjustment on different portions of the accommodating cavity 101, so as to adjust the slurry pressure of the corresponding portion through the volume change of the different portions, so that the slurry pressure in the accommodating cavity 101 is uniformly distributed. In some embodiments, the second direction B intersects the first direction a. In some embodiments, the first direction a, the second direction B, and the third direction are perpendicular to each other.

For example, in the case that the slurry pressure at the X portion in the accommodating chamber 101 is greater than or less than the slurry pressure at the other portion, the adjusting structure 11 corresponding to the X portion may be activated to adjust the volume of the X portion in the accommodating chamber 101 by the adjusting structure 11, so that the slurry pressure at the X portion in the accommodating chamber 101 is uniform with the slurry pressure at the other portion by the volume change of the X portion.

It should be noted that, in a specific application, the adjusting structure 11 may be movably connected to the first die 103 or may be movably connected to the second die 104, and the connection manner of the adjusting structure 11 is not specifically limited in the embodiment of the present application.

In some alternative embodiments of the present application, as shown in fig. 2 and 3, the adjusting structure 11 is movably connected to an end of the first die 103 facing the recess, and when the first die 103 and the second die 104 are installed, the adjusting structure 11 is opposite to the accommodating chamber 101, and the adjusting structure 11 can be moved toward or away from the accommodating chamber 101 to adjust the volume of the accommodating chamber 101. In a specific application, in case the adjustment structure 11 is moved towards the receiving chamber 101, the volume of the receiving chamber 101 may be reduced and the pressure of the slurry in the receiving chamber 101 may be increased. In case the adjustment structure 11 is moved away from the receiving chamber 101, the volume of the receiving chamber 101 may be increased and the pressure of the slurry in the receiving chamber 101 may be reduced. In this way, by moving the adjusting structure 11 towards or away from the accommodating cavity 101, the slurry pressure in the accommodating cavity 101 can be dynamically adjusted, so that the weight uniformity of the slurry discharged from the discharge flow channel 102 is better, and the size uniformity of a coating layer formed on the current collector by the slurry is improved.

As shown in fig. 3, the adjustment structure 11 may specifically include a first driving member 111 and a first adjustment block 112; wherein, a part of the first driving member 111 is embedded in the first die 103, and the first driving member 111 may be used to drive the first adjusting block 112 to move toward the accommodating cavity 101 or move away from the accommodating cavity 101 so as to adjust the volume of the accommodating cavity 101.

In a specific application, one end of the first driving member 111 is embedded at a side of the first die 103 near the second die 104, so that the distance between the first driving member 111 and the second die 104 can be reduced. In this way, when the first driving member 111 drives the first regulating block 112 to move toward or away from the accommodating chamber 101, the driving stroke of the first driving member 111 can be reduced, and thus, the efficiency of the first driving member 111 driving the first regulating block 112 to move can be improved.

By way of example, the first driving member 111 may include, but is not limited to, a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, etc., and embodiments of the present application may not be limited to a specific type of the first driving member 111.

Optionally, one end of the first die 103 facing the second die 104 is provided with a first avoiding portion 1031, the first avoiding portion 1031 is adapted to the accommodating cavity 101, one end of the first driving member 111 is embedded into the first die 103, and the other end of the first driving member 111 is exposed to the first avoiding portion 1031 so as to be connected to the first adjusting block 112, and the first driving member 111 may be used to drive the first adjusting block 112 to switch between a first state shown in fig. 2 and a second state shown in fig. 3; wherein, when the first adjusting block 112 is in the first state, the first adjusting block 112 is received in the first avoiding portion 1031, and when the first adjusting block 112 is in the second state, the first adjusting block 112 at least partially extends into the accommodating cavity 101 to adjust the volume of the accommodating cavity 101.

In a specific application, since the first adjusting block 112 can be received in the first avoiding portion 1031 in the first state, on one hand, the first adjusting block 112 can be prevented from protruding out of the first die head 103, interference between the first adjusting block 112 and other components in the production or transportation process is avoided, and production and transportation safety of the first die head 103 is improved; on the other hand, the first regulating block 112 can be prevented from occupying the space of the accommodating chamber 101, and the volume of the accommodating chamber 101 for accommodating the slurry can be increased.

As shown in fig. 4 and 5, the adjusting structure 11 is movably connected to the second die 104, and the adjusting structure 11 may at least partially extend into the accommodating cavity 101 to adjust the volume of the accommodating cavity 101.

In a specific application, in case the adjustment structure 11 is moved towards the receiving chamber 101, the volume of the receiving chamber 101 may be reduced and the pressure of the slurry in the receiving chamber 101 may be increased. In case the adjustment structure 11 is moved away from the receiving chamber 101, the volume of the receiving chamber 101 may be increased and the pressure of the slurry in the receiving chamber 101 may be reduced. In this way, by moving the adjusting structure 11 towards or away from the accommodating cavity 101, the slurry pressure in the accommodating cavity 101 can be dynamically adjusted, so that the weight uniformity of the slurry discharged from the discharge flow channel 102 is better, and the size uniformity of a coating layer formed on the current collector by the slurry is improved.

As shown in fig. 5, the adjusting structure 11 may include a second driving member 113 and a second adjusting block 114, the second driving member 113 being connected to the second die 104, and the second driving member 113 may be used to drive the second adjusting block 114 to extend into the accommodating chamber 101 or to move out of the accommodating chamber 101 to adjust the volume of the accommodating chamber 101.

In a specific application, since the accommodating chamber 101 is provided on the second die 104, the distance between the second driving member 113 and the accommodating chamber 101 can be made short by connecting the second driving member 113 to the second die 104. In this way, when the second driving member 113 drives the second regulating block 114 to move toward or away from the accommodating chamber 101, the driving stroke of the second driving member 113 can be reduced, and thus, the efficiency of the second driving member 113 driving the second regulating block 114 to move can be improved.

By way of example, the second driving member 113 may include, but is not limited to, a cylinder, an electric cylinder, a hydraulic cylinder, etc., and embodiments of the present application may not be limited to a specific type of the second driving member 113.

Optionally, a second avoiding portion 1041 is disposed on a side of the accommodating cavity 101 away from the first die 103, and the second avoiding portion 1041 is communicated with the accommodating cavity 101; one end of the second driving member 113 is embedded in the second die head 104, and the other end is exposed in the second avoiding portion 1041 and connected to the second adjusting block 114, and the second driving member 113 may be used for driving the second adjusting block 114 to switch between a third state shown in fig. 4 and a fourth state shown in fig. 5; wherein, when the second adjusting block 114 is in the third state, the second adjusting block 114 is received in the second avoiding portion 1041, and when the second adjusting block 114 is in the fourth state, the second adjusting block 114 at least partially extends into the accommodating cavity 101 to adjust the volume of the accommodating cavity 101.

In a specific application, since the second adjusting block 114 may be received in the second avoiding portion 1041 in the third state, it is possible to avoid the second adjusting block 114 occupying the space of the accommodating cavity 101, and increase the volume of the accommodating cavity 101 for accommodating the slurry.

As shown in fig. 6 and 7, the adjusting structure 11 may specifically include: a balloon 115 and a third driving member, the balloon 115 being at least partially positioned within the receiving cavity 101; the third driving member is connected to the balloon 115, and may be used to drive the volume of the balloon 115 to change, so as to adjust the volume of the accommodating chamber 101 through the volume change of the balloon 115.

In a specific application, when the third driving member drives the capsule 115 to have a larger volume, the volume of the accommodating chamber 101 may be reduced, the pressure of the slurry in the accommodating chamber 101 may be increased, and when the third driving member drives the capsule 115 to have a smaller volume, the volume of the accommodating chamber 101 may be increased, and the pressure of the slurry in the accommodating chamber 101 may be reduced. In this way, by the volume change of the capsule body 115, the slurry pressure in the accommodating cavity 101 can be dynamically adjusted, so that the weight uniformity of the slurry discharged from the discharge flow channel 102 is better, and the size uniformity of a coating layer formed on the current collector by the slurry is improved.

As shown in fig. 7, the second die 104 is further provided with a medium channel 1042, one end of the medium channel 1042 is communicated with the capsule 115, the other end of the medium channel 1042 is connected with the third driving member, and the medium channel 1042 is used for guiding the medium output by the third driving member into the capsule 115 or guiding the medium in the capsule 115 out to change the volume of the capsule 115.

By way of example, the medium may include, but is not limited to, at least one of a gas or a liquid, and embodiments of the present application are not particularly limited to the content of the medium. The third driver may then be determined based on the content of the medium. In the case where the medium is a gas, the third driving member may be an air pump. In the case where the medium is a liquid, the third driving member may be a liquid pump.

In summary, the die mechanism according to the embodiments of the present application may include at least the following advantages:

In the embodiment of the application, as the accommodating cavity of the die head mechanism is internally provided with the adjusting structure, the adjusting structure is movably arranged in the accommodating cavity, and the adjusting structure can be used for adjusting the volume of the accommodating cavity so as to adjust the pressure of the slurry through the volume change of the accommodating cavity, so that the slurry pressure in the accommodating cavity is uniformly distributed. Therefore, the weight consistency of the slurry discharged from the discharge flow channel accommodating cavity is good, the size uniformity of a coating layer formed on the current collector by the slurry is greatly improved, the quality of the membrane is improved, and further, the quality of a lithium ion battery applying the membrane can be improved.

It should be noted that in the embodiment of the present application, the specific structure of the die mechanism is the same as that of the die mechanism described in any of the foregoing embodiments, and the beneficial effects thereof are also similar, and are not described herein.

Claims (10)

1. A slurry coating apparatus, characterized in that the slurry coating apparatus comprises a die mechanism;

The die head mechanism comprises a die head body (10) and an adjusting structure (11);

The die head body (10) is provided with a containing cavity (101), a feeding flow channel and a discharging flow channel (102), wherein the feeding flow channel is used for feeding slurry into the containing cavity (101), the containing cavity (101) is used for containing the slurry, and the discharging flow channel (102) is used for allowing the slurry in the containing cavity (101) to flow out of the die head body (10);

The adjusting structure (11) is movably arranged in the accommodating cavity (101), and the adjusting structure (11) is used for adjusting the volume of the accommodating cavity (101) so as to adjust the pressure of the slurry through the volume change of the accommodating cavity (101).

2. Slurry coating apparatus according to claim 1, characterized in that the die body (10) comprises: a first die (103) and a second die (104) distributed along a first direction (a); wherein,

The second die head (104) is provided with a groove with a notch facing the first die head (103);

The first die head (103) is covered on the second die head (104) to enclose the groove to form the accommodating cavity (101);

a gasket can be clamped between the first die head (103) and the second die head (104) to form the discharge flow channel (102);

The adjusting structure (11) is movably connected with the first die head (103) or the second die head (104).

3. Slurry coating apparatus according to claim 2, characterized in that the adjustment structure (11) is movably connected at an end of the first die head (103) facing the recess, and the adjustment structure (11) is opposite to the receiving cavity (101), the adjustment structure (11) being movable towards or away from the receiving cavity (101) for adjusting the volume of the receiving cavity (101).

4. A slurry coating apparatus according to claim 3, characterized in that the adjustment structure (11) comprises a first driving member (111) and a first adjustment block (112) connected to the first driving member (111); wherein,

The first driving piece (111) is partially embedded in the first die head (103), and the first driving piece (111) is used for driving the first adjusting block (112) to move towards the accommodating cavity (101) or move away from the accommodating cavity (101) so as to adjust the volume of the accommodating cavity (101).

5. The slurry coating apparatus according to claim 4, wherein one end of the first die head (103) facing the second die head (104) is provided with a first avoiding portion (1031) adapted to the accommodating cavity (101), one end of the first driving member (111) is embedded in the first die head (103), and the other end is exposed to the first avoiding portion (1031) so as to be connected with the first adjusting block (112), and the first driving member (111) is used for driving the first adjusting block (112) to switch between a first state and a second state; wherein,

When the first adjusting block (112) is in the first state, the first adjusting block (112) is accommodated in the first avoiding portion (1031), and when the first adjusting block (112) is in the second state, the first adjusting block (112) at least partially stretches into the accommodating cavity (101) to adjust the volume of the accommodating cavity (101).

6. Slurry coating apparatus according to claim 2, characterized in that the adjusting structure (11) is movably connected to the second die head (104), the adjusting structure (11) being extendable at least partly into the receiving chamber (101) for adjusting the volume of the receiving chamber (101).

7. Slurry coating apparatus according to claim 6, characterized in that the adjustment structure (11) comprises a second drive member (113) and a second adjustment block (114) connected to the second drive member (113); wherein,

The second driving piece (113) is connected to the second die head, and the second driving piece (113) is used for driving the second adjusting block (114) to extend into the accommodating cavity (101) or move out of the accommodating cavity (101) so as to adjust the volume of the accommodating cavity (101).

8. The slurry coating apparatus according to claim 7, wherein a second avoiding portion (1041) is provided on a side of the accommodating chamber (101) away from the first die head (103), the second avoiding portion (1041) being in communication with the accommodating chamber (101);

One end of the second driving piece (113) is embedded in the second die head (104), the other end of the second driving piece is exposed in the second avoiding part (1041) and is connected with the second adjusting block (114), and the second driving piece (113) is used for driving the second adjusting block (114) to switch between a third state and a fourth state; wherein,

When the second adjusting block (114) is in the third state, the second adjusting block (114) is accommodated in the second avoiding portion (1041), and when the second adjusting block (114) is in the fourth state, the second adjusting block (114) at least partially stretches into the accommodating cavity (101) to adjust the volume of the accommodating cavity (101).

9. Slurry coating apparatus according to claim 1, characterized in that the adjusting structure (11) comprises:

-a capsule (115), said capsule (115) being at least partially located within said containment cavity (101);

And the third driving piece is connected with the bag body (115) and is used for driving the volume of the bag body (115) to change so as to adjust the volume of the accommodating cavity (101) through the volume change of the bag body (115).

10. Slurry coating apparatus according to any one of claims 1 to 9, characterized in that the extending direction of the accommodation chamber (101) is a second direction (B), the number of the adjustment structures (11) is a plurality, and the plurality of the adjustment structures (11) are arranged at intervals along the second direction (B); and/or the number of the groups of groups,

The slurry coating equipment further comprises a controller and a detector, wherein the detector is used for sensing weight information of the slurry coated on the surface of the current collector and feeding back the weight information to the controller; the controller is used for sending an adjusting instruction to the adjusting structure (11) according to the weight information fed back by the detector.