CN220027563U - Die head device and battery production system - Google Patents

Abstract

The utility model provides a die head device and a battery production system, and relates to the technical field of battery production. The die assembly includes a first die, a shim, a second die member, and a plurality of adjustment members. The first die member is provided with a first chamber and a second chamber; the feed passage communicates with the second chamber. The gasket is provided with a first cavity and a second cavity; the first cavity is communicated with the first cavity, and the second cavity is communicated with the second cavity; the first cavity has an opening. The second die member and the first die member clamp the gasket; the second die head piece is provided with a plurality of sub-runners; both ends of the sub-runner are communicated with the first cavity and the second cavity. The adjusting piece is movably connected with the second die head piece and stretches into the sub-runners to increase or decrease the effective passing area of the sub-runners. The battery production system provided by the utility model adopts the die head device. The die head device and the battery production system provided by the utility model can solve the problem that the uniformity of the thickness in the coating width direction is difficult to ensure.

Description

Die head device and battery production system

Technical Field

The utility model relates to the technical field of battery production, in particular to a die head device and a battery production system.

Background

In the production process of lithium batteries, there is an indispensable coating process. Coating is to uniformly coat the prepared slurry on a foil, and in the coating process, uniformity of each coating position, namely thickness uniformity, needs to be ensured. The slurry enters from the feed inlet of the lower die, is extruded through a slot between the lower die and the upper die, and is finally coated on the foil.

Due to the differences in slurry solids content, viscosity, pressure, etc., it is difficult to ensure thickness uniformity in the coating width direction in the prior art.

Disclosure of Invention

The object of the present utility model is to provide a die head device capable of improving the technical problem that it is difficult to ensure uniformity of thickness in the coating width direction in the prior art.

The object of the present utility model is also to provide a battery production system that can solve the technical problem that it is difficult to ensure uniformity of thickness in the coating width direction in the prior art.

Embodiments of the utility model may be implemented as follows:

an embodiment of the present utility model provides a die apparatus including:

the first die head piece is provided with a first cavity and a second cavity which are separated; a feed channel is arranged on the first die head piece and is communicated with the second cavity;

a shim disposed on the first die member; the gasket is provided with a first cavity and a second cavity which are spaced; the first cavity is communicated with the first cavity, and the second cavity is communicated with the second cavity; an opening is formed in one side, away from the second cavity, of the first cavity;

a second die member coupled to the first die member and co-clamping the shim with the first die member; the second die head piece is provided with a plurality of spaced diversion channels; two ends of any of the shunt channels are respectively communicated with the first cavity and the second cavity; the method comprises the steps of,

the adjusting parts are movably connected to the second die head part, extend into the shunting channels respectively, and are used for moving relative to the second die head part to increase or decrease the effective passing area of the shunting channels.

The die head device provided by the utility model has the beneficial effects compared with the prior art that:

in the process of coating by adopting the die head device, the slurry is led into the second chamber from the feeding channel, the slurry passes through the second cavity from the second chamber to enter the sub-channel, and passes through the first cavity to be collected in the first chamber after passing through the sub-channel; after a sufficient amount of slurry has collected in the first chamber, the slurry can be extruded from the opening of the gasket for coating. The plurality of adjusting parts can move relative to the second die head part to respectively reduce or increase the effective passing area of the corresponding flow dividing channels, so that the flow and the pressure of the flow dividing channels are mutually independently adjusted, the flow and the pressure of each part of slurry collected in the first chamber can be kept consistent, and the consistency of the surface density of the coated slurry is adjusted. Based on this, the technical problem that it is difficult to ensure uniformity of thickness in the coating width direction in the prior art can be improved.

Optionally, the second die head piece is further provided with a plurality of throttling grooves, the throttling grooves are respectively arranged in the sub-runners, and the depth of each throttling groove is larger than that of each sub-runner; the adjusting piece is movably arranged in the throttling groove.

Optionally, the adjusting piece comprises a movable part and an adjusting part; the adjusting part is connected to the end part of the movable part; the movable part is movably connected with the second die head piece, and the adjusting part is movably arranged in the throttling groove; the adjusting part is used for increasing or reducing the effective passing area of the shunt channel in the process of following the moving part to move.

Optionally, the width of the throttling groove is larger than the width of the sub-runner, and the width of the adjusting part is the same as the width of the throttling groove.

Optionally, the depth of the throttling groove is greater than or equal to the sum of the height of the adjusting part and the depth of the diversion channel.

Optionally, the width of the first chamber is smaller than the width of the second chamber.

Optionally, the depth of the first chamber is less than the depth of the second chamber.

Optionally, the die head device further comprises a plurality of adjusting components, and the plurality of adjusting components respectively correspond to the plurality of adjusting pieces; the adjusting component comprises a seat body and a micrometer; the seat body is fixed on one side of the second die head piece far away from the gasket; the micrometer is movably connected to the base, and the micrometer is connected to the adjusting piece, so that the adjusting piece is driven to move relative to the second die head piece when the micrometer moves relative to the base.

Optionally, the feed channel is connected to the bottom of the second chamber and corresponds to the middle of the second chamber in the lateral direction.

A battery production system includes a die assembly. The die head device comprises:

the first die head piece is provided with a first cavity and a second cavity which are separated; a feed channel is arranged on the first die head piece and is communicated with the second cavity;

a shim disposed on the first die member; the gasket is provided with a first cavity and a second cavity which are spaced; the first cavity is communicated with the first cavity, and the second cavity is communicated with the second cavity; an opening is formed in one side, away from the second cavity, of the first cavity;

a second die member coupled to the first die member and co-clamping the shim with the first die member; the second die head piece is provided with a plurality of spaced diversion channels; two ends of any of the shunt channels are respectively communicated with the first cavity and the second cavity; the method comprises the steps of,

the adjusting parts are movably connected to the second die head part, extend into the shunting channels respectively, and are used for moving relative to the second die head part to increase or decrease the effective passing area of the shunting channels.

The battery production system provided by the utility model adopts the die head device, and the beneficial effects of the battery production system relative to the prior art are the same as those of the die head device provided by the utility model relative to the prior art, and are not repeated here.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a die apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a die apparatus provided in an embodiment of the utility model;

FIG. 3 is a schematic view of a gasket according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a second die member provided in an embodiment of the utility model;

FIG. 5 is a schematic cross-sectional view of a second die member provided in an embodiment of the utility model;

FIG. 6 is a schematic view of an adjusting member according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a first die member provided in an embodiment of the utility model;

fig. 8 is a schematic cross-sectional view of a second die member provided in an embodiment of the utility model.

Icon: 10-die head device; 100-a first die member; 110-a first chamber; 120-a second chamber; 130-a feed channel; 200-a second die member; 210-a subchannel; 220-throttling grooves; 230-active channel; 300-a gasket; 310-a first cavity; 320-a second cavity; 330-opening; 400-adjusting piece; 410-a movable part; 420-an adjusting part; 500-an adjustment assembly; 510-micrometer; 520-a seat body.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of 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.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

In an embodiment of the present utility model, a battery production system (not shown) is provided, where the battery production system is used for producing and manufacturing a battery, and a coating operation performed on a foil is included in the process of producing and manufacturing a battery. The battery production system provided by the utility model can solve the problem that the uniformity of the thickness in the coating width direction is difficult to ensure in the coating operation.

In an embodiment of the present utility model, referring to fig. 1, the battery production system includes a die apparatus 10, and the die apparatus 10 is applied to a coating process in a coating operation, that is, the die apparatus 10 may apply a paste on a foil to manufacture an electrode sheet. It should be noted that the die head device 10 can improve the problem that it is difficult to ensure uniformity of thickness in the coating width direction in the coating operation; this makes it possible to achieve the object of improving the problem that it is difficult to ensure uniformity of thickness in the coating width direction in the coating operation in the battery production system employing the die device 10.

In an embodiment of the present utility model, referring to fig. 1 and 2 in combination, die apparatus 10 includes a first die member 100, a shim 300, a second die member 200, and a plurality of adjustment members 400. First die member 100 defines first and second spaced apart chambers 110 and 120; the first die member 100 is provided with a feed channel 130, and the feed channel 130 communicates with the second chamber 120. Shim 300 is disposed on first die member 100; the gasket 300 is provided with a first cavity 310 and a second cavity 320 which are spaced apart; the first cavity 310 communicates with the first chamber 110 and the second cavity 320 communicates with the second chamber 120; the side of the first cavity 310 remote from the second cavity 320 has an opening 330, as shown in fig. 3. Second die member 200 is coupled to first die member 100 and cooperates with first die member 100 to sandwich shim 300; the second die member 200 is provided with a plurality of spaced apart flow dividing channels 210; both ends of any one of the sub-channels 210 are respectively connected to the first cavity 310 and the second cavity 320. The plurality of adjusting members 400 are movably connected to the second die member 200, and the plurality of adjusting members 400 extend into the plurality of sub-runners 210, respectively, and the adjusting members 400 are configured to move relative to the second die member 200 to increase or decrease the effective passage area of the sub-runners 210.

As described above, in the coating process using the die apparatus 10, the slurry is introduced from the feed channel 130 into the second chamber 120, and the slurry passes through the second cavity 320 from the second chamber 120 into the sub-flow path 210, and then passes through the sub-flow path 210 and then is collected in the first chamber 110 through the first cavity 310; after a sufficient amount of slurry has been pooled in the first chamber 110, the slurry can be extruded from the opening 330 of the gasket 300 for coating. That is, the slurry sequentially passes through the feed channel 130, the second chamber 120, the second cavity 320, the shunt channel 210, the first cavity 310, the first chamber 110, and the opening 330, and is then extruded from the gap between the first die member 100 and the second die member 200 to be coated. The die device 10 may reduce or increase the effective passing area of the corresponding split channels 210 by moving the plurality of adjusting members 400 relative to the second die member 200, so as to adjust the flow and pressure of the plurality of split channels 210 independently from each other, so that the flow and pressure of each portion of the slurry collected in the first chamber 110 can be kept consistent, and the consistency of the surface density of the slurry after coating can be adjusted. Based on this, the technical problem that it is difficult to ensure uniformity of thickness in the coating width direction in the prior art can be improved.

It should be noted that, the effective passing area of the flow dividing channel 210 is represented by the minimum area of the flow dividing channel 210 on the plane perpendicular to the flow direction of the slurry in the flow dividing channel 210; this effective passage area may be used to represent the flow of slurry out of the flow path 210 at standard pressure. In other words, in the case where the effective passing area of the shunt channel 210 is reduced, the flow rate of the slurry in the shunt channel 210 is reduced and the pressure is increased; in the case where the effective passing area of the shunt channel 210 increases, the flow rate of the slurry in the shunt channel 210 increases and the pressure decreases.

Optionally, referring to fig. 2, fig. 4 and fig. 5 in combination, in an embodiment of the present utility model, a plurality of throttling grooves 220 are further formed on the second die member 200, the plurality of throttling grooves 220 are respectively formed in the plurality of sub-channels 210, and the depth of the throttling grooves 220 is greater than the depth of the sub-channels 210; the regulating member 400 is movably disposed in the throttling groove 220. The throttling groove 220 can provide a guiding function for the adjusting member 400, so that the adjusting member 400 can be ensured to move along the direction perpendicular to the flow direction of the slurry, and the flow rate of the sub-channel 210 can be conveniently and effectively adjusted.

The flow direction of the slurry in the sub-flow channel 210 is taken as an axial direction of the slurry, and a direction perpendicular to the axial direction is taken as a radial direction. The throttling groove 220 is opened in the radial direction and is communicated with the diversion channel 210; at this time, the adjusting member 400 engaged with the throttling groove 220 can extend into or withdraw from the sub-runner 210 in the radial direction, so as to reduce or increase the passing area of the sub-runner 210 in the radial direction, thereby effectively achieving the purpose of adjusting and reducing or increasing the effective passing area of the sub-runner 210.

It should be understood that, in other embodiments of the present utility model, the opening direction of the throttling groove 220 may also be an acute angle with respect to the axial direction; that is, the moving direction of the regulating member 400 with respect to the sub-flow path 210 may also be at an acute angle to the axial direction.

In the present embodiment, referring to fig. 2 and 6, the adjusting member 400 includes a movable portion 410 and an adjusting portion 420; the adjusting part 420 is connected to the end of the movable part 410; the movable part 410 is movably connected with the second die head piece 200, and the adjusting part 420 is movably arranged in the throttling groove 220; the adjusting part 420 serves to increase or decrease the effective passing area of the sub-flow path 210 in the course of moving along with the movable part 410.

It should be noted that the movable portion 410 is substantially rod-shaped and can be moved relatively to the second die member 200 conveniently; the adjusting portion 420 may have a waist shape in a cross section on a plane perpendicular to the moving direction thereof, and may be regarded as a long bar shape having semicircular ends. Based on this, the cross-sectional area of the regulating portion 420 perpendicular to the flow direction of the slurry in the shunt path 210 is made larger; in the case where the adjusting portion 420 is extended into the sub-flow path 210, the adjustment of the effective passing area of the sub-flow path 210 can be effectively completed. It should be understood that the cross section of the adjustment part 420 along the moving direction thereof may also be formed in other shapes, for example, a circle, a polygon, an ellipse, a semicircle, or the like; for another example, the adjusting portion 420 may be in a sheet shape, and may be capable of blocking the flow of the slurry in the sub-flow path 210, so as to adjust the effective passing area of the sub-flow path 210.

In addition, in the present embodiment, the second die member 200 is further provided with a movable channel 230, the movable channel 230 penetrates through the second die member 200 and is communicated with the throttling groove 220, the movable portion 410 is disposed in the movable channel 230, and a part of the movable portion 410 extends out of the second die member 200, so that a user can conveniently adjust the position of the adjusting member 400, and can conveniently adjust the effective passing area of the flow dividing channel 210.

Based on this, referring to fig. 2 and 4, in order to effectively adjust the effective passing area of the sub-flow channel 210, the width of the throttling groove 220 is optionally larger than the width of the sub-flow channel 210, and the width of the adjusting portion 420 is the same as the width of the throttling groove 220. Since the width of the throttling groove 220 is greater than the width of the flow dividing channel 210, the regulating member 400 can effectively close the partial flow dividing channel 210 during the movement of the throttling groove 220. And, since the width of the regulating member 400 is greater than the radial width of the sub-flow path 210, the effective passing area of the sub-flow path 210 can be arbitrarily regulated from the range of being completely closed and completely opened by the regulating member 400, and the regulating range of the effective passing area of the sub-flow path 210 can be improved.

It should be noted that the width of the flow dividing channel 210 refers to the width in the radial direction of the flow dividing channel 210, and the width of the throttle groove 220 corresponds to the width in the radial direction of the flow dividing channel 210.

It should be appreciated that in other embodiments of the present utility model, the width of the regulator 400 and the throttle slot 220 may be equal to the width of the subchannel 210, in which case it is likewise possible to achieve an effective passage area of the regulator 400 that can be adjusted between fully closed and fully open. Of course, in other embodiments of the present utility model, the width of the regulator 400 and the throttle slot 220 may be smaller than that of the flow dividing channel 210, and the flow dividing channel 210 may not be completely closed.

In the present embodiment, referring to fig. 4 and 5 in combination, the depth of the throttling groove 220 is greater than or equal to the sum of the height of the adjusting portion 420 and the depth of the diversion channel 210. Therefore, the adjusting part 420 can be conveniently withdrawn from the sub-runner 210 completely in the process of moving in the throttling groove 220, thereby realizing the purpose of opening the sub-runner 210 completely and improving the adjusting range of the effective passing area of the sub-runner 210.

The depth of the throttling groove 220 and the depth of the diverting passage 210 refer to the depth dimensions of the throttling groove 220 and the diverting passage 210 in the moving direction along the adjusting portion 420.

In the present embodiment, referring to fig. 7 and 8 in combination, the width of the first chamber 110 is smaller than the width of the second chamber 120. The depth of the first chamber 110 is less than the depth of the second chamber 120. It can also be seen that the overall spatial volume of the second chamber 120 is greater than the overall spatial volume of the first chamber 110. The second chamber 120 can realize pressure stabilization of the slurry, and after the slurry enters the first chamber 110 through the flow dividing channel 210, the space volume of the first chamber 110 is smaller, so that the influence on the flow and pressure of the slurry in the transverse direction during the extrusion can be avoided, and the uniformity of slurry coating is ensured.

It should be noted that, in other embodiments of the present utility model, only the width of the first chamber 110 is smaller than the width of the second chamber 120, so that the overall spatial volume of the second chamber 120 is larger than the overall spatial volume of the first chamber 110; it is also possible that only the depth of the first chamber 110 is smaller than the depth of the second chamber 120, so that the overall spatial volume of the second chamber 120 is larger than the overall spatial volume of the first chamber 110.

In this embodiment, referring to fig. 1 and 2, the die apparatus 10 further includes a plurality of adjusting assemblies 500, and the plurality of adjusting assemblies 500 respectively correspond to the plurality of adjusting members 400; the adjustment assembly 500 includes a housing 520 and a micrometer 510; the base 520 is fixed to the side of the second die member 200 remote from the gasket 300; the micrometer 510 is movably connected to the base 520, and the micrometer 510 is connected to the adjusting member 400, so as to drive the adjusting member 400 to move relative to the second die head member 200 when the micrometer 510 moves relative to the base 520.

Micrometer 510 can accurately control the distance that micrometer 510 moved at the in-process that removes relative pedestal 520 to can accurately control the travel distance of regulating part 400, conveniently accurately control the flow and the pressure of subchannel 210, improve the accuracy of adjustment subchannel 210 flow and pressure.

It should be appreciated that in other embodiments, other driving arrangements may be used to effect driving of the adjustment member 400, such as a stepper motor or hydraulic device, for example.

In the present embodiment, the feed channel 130 is connected to the bottom of the second chamber 120 and corresponds to the middle of the second chamber 120 in the lateral direction. The feeding channel 130 is arranged at the bottom of the second chamber 120, and the feeding channel 130 is arranged at the middle part of the second chamber 120 in the transverse direction, so that the second chamber 120 can be uniformly and stably filled with the slurry after the slurry is led into the second chamber 120, and the pressure stabilizing effect is conveniently achieved.

It should be appreciated that in other embodiments of the present utility model, the plurality of feeding channels 130 may be provided in a plurality, and the plurality of feeding channels 130 may be provided at intervals, so that not only the feeding speed of the slurry in the second chamber 120 may be increased, but also the pressure of each area of the second chamber 120 may be conveniently adjusted through the plurality of feeding channels 130.

In summary, in the die apparatus 10 and the battery production system provided in the embodiments of the utility model, during the coating process, the slurry is introduced from the feeding channel 130 to the second chamber 120, the slurry passes through the second cavity 320 from the second chamber 120 into the sub-channel 210, and then passes through the sub-channel 210 and then passes through the first cavity 310 to be collected in the first chamber 110; after a sufficient amount of slurry has been pooled in the first chamber 110, the slurry can be extruded from the opening 330 of the gasket 300 for coating. The plurality of adjusting members 400 may be movable relative to the second die member 200 to respectively reduce or increase the effective passing area of the corresponding flow dividing channels 210, so that the flow and the pressure of the plurality of flow dividing channels 210 are independently adjusted, so that the flow and the pressure of each portion of the slurry collected in the first chamber 110 can be kept consistent, and the consistency of the surface density of the slurry after coating is adjusted. Based on this, the technical problem that it is difficult to ensure uniformity of thickness in the coating width direction in the prior art can be improved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A die apparatus, comprising:

the first die head piece is provided with a first cavity and a second cavity which are separated; a feed channel is arranged on the first die head piece and is communicated with the second cavity;

a shim disposed on the first die member; the gasket is provided with a first cavity and a second cavity which are spaced; the first cavity is communicated with the first cavity, and the second cavity is communicated with the second cavity; an opening is formed in one side, away from the second cavity, of the first cavity;

a second die member coupled to the first die member and co-clamping the shim with the first die member; the second die head piece is provided with a plurality of spaced diversion channels; two ends of any of the shunt channels are respectively communicated with the first cavity and the second cavity; the method comprises the steps of,

the adjusting parts are movably connected to the second die head part, extend into the shunting channels respectively, and are used for moving relative to the second die head part to increase or decrease the effective passing area of the shunting channels.

2. The die head device according to claim 1, wherein a plurality of throttling grooves are further formed in the second die head piece, the throttling grooves are respectively formed in a plurality of the sub-runners, and the depth of the throttling grooves is larger than that of the sub-runners; the adjusting piece is movably arranged in the throttling groove.

3. The die apparatus of claim 2, wherein the adjustment member comprises a movable portion and an adjustment portion; the adjusting part is connected to the end part of the movable part; the movable part is movably connected with the second die head piece, and the adjusting part is movably arranged in the throttling groove; the adjusting part is used for increasing or reducing the effective passing area of the shunt channel in the process of following the moving part to move.

4. A die apparatus according to claim 3, wherein the width of the throttle groove is larger than the width of the sub-flow passage, and the width of the regulating portion is the same as the width of the throttle groove.

5. A die apparatus according to claim 3, wherein the depth of the throttle groove is greater than or equal to the sum of the height of the adjusting portion and the depth of the flow dividing passage.

6. The die apparatus of any of claims 1-5, wherein the width of the first chamber is less than the width of the second chamber.

7. The die apparatus of any of claims 1-5, wherein the depth of the first chamber is less than the depth of the second chamber.

8. The die apparatus of any of claims 1-5, further comprising a plurality of adjustment assemblies, the plurality of adjustment assemblies corresponding to the plurality of adjustment members, respectively; the adjusting component comprises a seat body and a micrometer; the seat body is fixed on one side of the second die head piece far away from the gasket; the micrometer is movably connected to the base, and the micrometer is connected to the adjusting piece, so that the adjusting piece is driven to move relative to the second die head piece when the micrometer moves relative to the base.

9. The die apparatus according to any one of claims 1 to 5, wherein the feed passage is connected to a bottom portion of the second chamber and corresponds to a middle portion of the second chamber in a lateral direction.

10. A battery production system comprising a die assembly according to any one of claims 1 to 9.