CN217646333U

CN217646333U - Material mixing equipment suitable for dry method electrode

Info

Publication number: CN217646333U
Application number: CN202220767534.7U
Authority: CN
Inventors: 张耀法; 肖强; 秦士林; 其他发明人请求不公开姓名
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-10-25
Anticipated expiration: 2032-03-31

Abstract

The utility model discloses a material mixing equipment suitable for dry process electrode, include: the kneading box is internally provided with a spraying piece; the crushing assembly is used for crushing materials and conveying the crushed materials into the kneading box; the solvent storage tank is used for storing a solvent, the solvent storage tank is selectively communicated with the spraying piece, the spraying piece is used for spraying the solvent into the kneading box, and the kneading box is used for kneading the solvent and the crushed materials. From this, through kneading case, broken subassembly and the cooperation of solvent holding vessel, can realize that the material kneads in kneading the case with the solvent in the solvent holding vessel after the breakage refines, solvent and material fully contact, can make the film forming easy, the easy attenuate of pole piece to, through control solvent holding vessel and spraying a intercommunication or disconnection, can control the volume that the solvent added in the kneading case, thereby can reduce the solvent use amount.

Description

Material mixing equipment suitable for dry method electrode

Technical Field

The utility model belongs to the technical field of the material mixing and specifically relates to a material mixing equipment suitable for dry process electrode is related to.

Background

In the related technology, a wet process or a dry process can be adopted to process the pole piece, and compared with the electrode processing technology by the wet process, the electrode processing technology by the dry process has many advantages, such as less occupied area of equipment, low equipment cost and the like. According to the dry processing technology, the powder is directly rolled to form a film, and then the film is rolled in combination with the collector, so that the process is simple, and the control difficulty of the manufacturing process is reduced. In the production process of producing the pole piece by the dry process, the material is crushed by air flow, the crushed material is easy to form a piece in the rolling process, but the thickness of the pole piece is generally thicker, and the pole piece is difficult to form for harder powder materials and can be formed by repeated rolling, so that the pole piece processed by the dry process cannot be popularized and applied in a lithium ion battery on a large scale. In the process of processing the pole piece by the dry process, the material powder and the adhesive are required to be melted and softened, so that the adhesive and the powder particles are in multipoint contact, the bonding effect is improved, and the effects of easiness in film forming and easiness in pole piece thinning are achieved. However, in the kneading process of the material powder and the adhesive, the crushed material powder is not easy to fully contact with the solvent, so that the film forming is difficult, and the pole piece is not easy to thin.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a material mixing equipment suitable for dry process electrode, this material mixing equipment can make the material knead in kneading the case with the solvent in the solvent holding vessel after the breakage refines, makes the film-forming easy, the easy attenuate of pole piece to, also can control the volume that the solvent added in kneading the incasement, thereby can reduce the solvent use amount.

According to the utility model discloses a material mixing equipment suitable for dry process electrode, include: the kneading box is internally provided with a spraying piece; the crushing assembly is used for crushing materials and conveying the crushed materials into the kneading box; the solvent storage tank is used for storing a solvent, the solvent storage tank is selectively communicated with the spraying piece, the spraying piece is used for spraying the solvent into the kneading box, and the kneading box is used for kneading the solvent and the crushed materials.

According to the utility model discloses a material mixing equipment, the material is carried to kneading the case after through broken subassembly is broken, the solvent holding vessel with spray a intercommunication after, the solvent can spray to kneading the case through spraying in the solvent holding vessel, knead the case and knead material and solvent after will smashing, make solvent and material powder fully contact, can make the film forming easy, the easy attenuate of pole piece, and, through control solvent holding vessel with spray a intercommunication or disconnection, can control the solvent and add the volume of kneading the incasement, guarantee that the solvent is suitable with the material proportion after smashing, avoid the solvent to add many, thereby can reduce the solvent use amount.

In some examples of the invention, the crushing assembly comprises: the crusher is used for crushing materials, and the first conveying pipeline is communicated with the crusher and the kneading box.

In some examples of the invention, the crushing assembly further comprises: the storage tank, the storage tank is connected the knapper with between the first conveying pipeline, first conveying pipeline intercommunication the storage tank with the kneading box, the storage tank with the knapper selectively communicates.

In some examples of the invention, the crushing assembly further comprises: the storage tank is arranged on the weighing piece.

In some examples of the present invention, a second material conveying pipe is connected between the storage tank and the crusher, and the second material conveying pipe is adapted to communicate the storage tank and the crusher;

the second conveying pipeline is provided with an opening and closing valve.

In some examples of the invention, the solvent storage tank and be connected with the delivery pump between spraying the piece, the delivery pump is used for with the solvent pump send to spraying the piece.

In some examples of the present invention, the material mixing device for dry electrode further comprises: the blending tank, the solvent holding vessel is a plurality of, and is a plurality of the solvent holding vessel all selectively with the blending tank intercommunication, just the blending tank with the delivery pump is connected.

In some examples of the present invention, a first infusion tube is connected between the mixing tank and the solvent storage tank, and the first infusion tube is provided with a liquid mass flow meter.

In some examples of the present invention, a second infusion tube is connected between the delivery pump and the spray member.

In some examples of the present invention, the spraying member is plural, and two adjacent spraying members are spaced apart.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a material mixing apparatus according to an embodiment of the present invention.

Reference numerals:

a material mixing apparatus 100;

a crushing assembly 10;

a crusher 11; a drive mechanism 111; a cutting mechanism 112; a feeding mechanism 113; a crush can 114;

a first feed delivery pipe 12; a second delivery pipe 13; an opening and closing valve 14; a storage tank 15; a weighing member 16;

a solvent storage tank 20; a liquid mass flow meter 21; a mixing tank 22; a delivery pump 23;

a first infusion tube 24; a second infusion line 25;

a first communication hole 26; second communication hole 27:

a kneading box 30; a spray member 31; a kneading shaft 32.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, a material mixing device 100 suitable for a dry electrode according to an embodiment of the present invention is described below, where the material mixing device 100 suitable for a dry electrode may be a powder mixing device, but the present invention is not limited thereto, and the material mixing device 100 may also be other material mixing devices 100, and this application takes a powder mixing device as an example for illustration.

As shown in fig. 1, a material mixing apparatus 100 for a dry electrode according to an embodiment of the present invention includes a kneading box 30, a crushing assembly 10, and a solvent storage tank 20. Be equipped with in kneading the case 30 and spray 31, spray 31 can be the nozzle, and crushing unit 10 is used for the material breakage and carries the material after will breaking to kneading the case 30 in, and the material can be the material of production battery pole piece. The solvent storage tank 20 is used for storing a solvent, the solvent is an auxiliary agent, the crushed material powder and an adhesive need to be mixed in the pole piece production process, and the solvent is added into the mixture of the material powder and the adhesive, so that the material powder and the adhesive can be in full contact. The solvent storage tank 20 is selectively communicated with the spraying piece 31, when the solvent storage tank 20 is communicated with the spraying piece 31, the spraying piece 31 is used for spraying the solvent into the kneading box 30, when the solvent storage tank 20 is disconnected from the spraying piece 31, the solvent in the solvent storage tank 20 cannot be sprayed into the kneading box 30 through the spraying piece 31, and the kneading box 30 is used for kneading the solvent and the crushed materials. The material mixing device 100 suitable for the dry electrode is a device which conveys the material after being crushed by the crushing assembly 10 into the kneading box 30 to be kneaded with the solvent sprayed from the spraying member 31. In the using process of the material mixing device 100 suitable for the dry electrode, a proper amount of solvent can be sprayed out through the spraying piece 31 in the kneading box 30, so that the material powder and the adhesive are mixed more uniformly.

Further, the crushing unit 10 is located above the kneading box 30, when the material mixing apparatus 100 is operated, the granular material and the adhesive are put into the crushing unit 10, the crushing unit 10 crushes the granular material and mixes the adhesive with the crushed material, and then the crushing unit 10 conveys the mixture of the adhesive and the crushed material into the kneading box 30 located below the crushing unit 10, and by arranging the crushing unit 10 above the kneading box 30, when the mixture of the adhesive and the crushed material flows into the crushing unit 10, the mixture of the adhesive and the crushed material is facilitated to flow into the kneading box 30 by the gravity of the mixture of the adhesive and the crushed material.

Specifically, when the material mixing device 100 works, granular materials and adhesives are placed into the crushing assembly 10, the crushing assembly 10 crushes the materials, then the crushing assembly 10 conveys a mixture of the crushed materials and the adhesives into the kneading box 30, meanwhile, the spraying piece 31 is communicated with the solvent storage tank 20, a solvent in the solvent storage tank 20 is sprayed into the kneading box 30 through the spraying piece 31, so that the solvent is fully contacted with the mixture of the materials and the adhesives, and the kneading box 30 kneads the crushed materials and the solvent, so that a film can be formed easily, and a pole piece can be thinned easily. Moreover, the solvent and the crushed materials can be fully contacted with the adhesive after reaching a certain proportion, the amount of the solvent added into the kneading box 30 can be controlled by controlling the connection or disconnection of the solvent storage tank 20 and the spraying piece 31, the proportion of the solvent and the crushed materials is proper, the addition of the solvent is avoided, the addition of a small amount of the solvent is also avoided, the proportion of the solvent and the crushed materials is proper, the addition of the solvent is avoided, and the use amount of the solvent can be reduced.

In some embodiments of the present invention, as shown in fig. 1, the crushing assembly 10 may include: a crusher 11 and a first conveyor pipe 12, the crusher 11 being intended for crushing material, it being understood that the crusher 11 is intended for crushing material. The first material conveying pipe 12 is communicated with the crusher 11 and the kneading box 30, furthermore, one end of the first material conveying pipe 12 is communicated with the crusher 11, the other end of the first material conveying pipe 12 is communicated with the kneading box 30, and the materials in the crusher 11 can be conveyed to the kneading box 30 through the first material conveying pipe 12.

Further, the crusher 11 is located above the first feed conveyor 12, the crusher 11 communicates with the kneading box 30 through the first feed conveyor 12, and the powder of the material crushed by the crusher 11 can be transported into the kneading box 30 through the first feed conveyor 12. The crusher 11 may be composed of a driving mechanism 111, a cutting mechanism 112, a feeding mechanism 113, and a crushing tank 114, wherein the crushing tank 114 may be configured to have the crushing tank 114 with a cover plate, thereby preventing fine dust such as dust from contaminating the material. As shown in fig. 1, the feeding mechanism 113 is configured to convey a material to be crushed into the crush can 114, the driving mechanism 111 is disposed above the cutting mechanism 112, the driving mechanism 111 is connected to the cutting mechanism 112, and the cutting mechanism 112 is driven by the driving mechanism 111 to rotate in the crush can 114, so that the cutting mechanism 112 crushes the material in the crush can 114, thereby achieving a technical effect of crushing the material.

Further, through setting up different procedures to actuating mechanism 111, can set up cracker 11 to cracker 11 that has different rotational speeds to can select cracker 11 to work with different rotational speeds according to the material of difference, and then reach the material that can obtain different broken degrees according to the demand.

In some embodiments of the present invention, as shown in fig. 1, the kneading box 30 may be configured as a box body cover having a cover body for opening or closing the box body, and further, the kneading box 30 includes a box body and a cover body, the upper end of the box body is opened, and the cover body is used for opening or closing the opened end of the box body. Or the kneading box 30 may be provided as a closed box. The first material conveying pipe 12 extends into the kneading box 30 through the first communicating hole 26 on the kneading box 30, and the crushed material can be directly conveyed into the kneading box 30 through the first material conveying pipe 12, so that the purpose of conveying the material into the kneading box 30 from the first material conveying pipe 12 is realized.

As shown in fig. 1, a kneading shaft 32 may be provided in the kneading box 30, and after the material powder and the solvent enter the kneading box 30, the material is kneaded by the rotation of the kneading shaft 32.

In some embodiments of the present invention, as shown in fig. 1, the crushing assembly 10 further comprises: and the storage tank 15 is positioned below the crusher 11, the storage tank 15 is connected between the crusher 11 and the first conveying pipeline 12, the first conveying pipeline 12 is communicated with the storage tank 15 and the kneading box 30, and the storage tank 15 is selectively communicated with the crusher 11. After the material is crushed by the crusher 11, the storage tank 15 is controlled to be communicated with the crusher 11, the crushed material powder moves into the storage tank 15, and the material powder in the storage tank 15 is conveyed into the kneading box 30 through the first conveying pipeline 12.

In some embodiments of the present invention, as shown in fig. 1, the crushing assembly 10 further comprises: the storage tank 15 is arranged on the weighing member 16, the weighing member 16 is in contact with the storage tank 15, and the weighing member 16 is used for weighing the storage tank 15. Further, the weighing member 16 can be set to be a mechanical weighing member 16, the weighing member 16 can also be set to be an electronic scale 16, the setting type of the weighing member 16 is specifically selected according to actual conditions, when the material is conveyed into the storage tank 15 after being crushed by the crusher 11, the weighing member 16 can accurately measure the weight of the material entering the storage tank 15, so that the technical effect of quantitatively adding the material powder into the kneading box 30 can be realized, the material waste is avoided, the proportion of the material powder and the solvent in the kneading box 30 can be better controlled, and the material powder and the adhesive can be better in full contact.

In some embodiments of the present invention, as shown in fig. 1, a second material conveying pipe 13 is connected between the material storage tank 15 and the crusher 11, and the second material conveying pipe 13 is adapted to communicate the material storage tank 15 and the crusher 11. After the material is crushed by the crusher 11, the crushed material is conveyed from the crusher 11 to the storage tank 15 below the crusher 11 through the second conveying pipe 13, so that the material conveying between the crusher 11 and the storage tank 15 is realized.

In some embodiments of the present invention, as shown in fig. 1, the second material conveying pipe 13 is provided with an on-off valve 14, further, the on-off valve 14 may be a manual on-off valve 14, the on-off valve 14 may also be an electronic on-off valve 14, and the on-off valve 14 is used for controlling the material storage tank 15 to be communicated with or disconnected from the crusher 11. After the material is broken through knapper 11, control on-off valve 14 opens, and the material in knapper 11 can be carried to storage tank 15 in through second conveying pipeline 13, and when the material was carried to storage tank 15 through second conveying pipeline 13 and reached the required quantity of work, control on-off valve 14 closed, and storage tank 15 does not communicate with knapper 11 this moment, avoids getting into kneading box 30 through storage tank 15 when too much to cause the production extravagant.

Further, the material storage tank 15 may be a closed material storage tank 15, the material storage tank 15 is provided with a second communication hole 27, one end of the second material conveying pipe 13 is communicated with the crusher 11, and the other end of the second material conveying pipe 13 is communicated with the second communication hole 27.

Further, a controller can be arranged between the on-off valve 14 and the weighing member 16, when the weighing member 16 measures that the weight of the material conveyed into the storage tank 15 through the second conveying pipe 13 is consistent with the set required weight, a signal can be sent to the controller, the controller can control the on-off valve 14 to close, so that the valve body is automatically closed, when the weighing member 16 measures that the weight of the material conveyed into the storage tank 15 through the second conveying pipe 13 does not meet the requirement of work, a signal can be sent to the controller, the controller can control the on-off valve 14 to open, further, sufficient amount of the material is conveyed into the storage tank 15 through the second conveying pipe 13, the effect of automatically feeding the kneading box 30 can be achieved, and the work of workers can be reduced.

In some embodiments of the present invention, as shown in fig. 1, a transfer pump 23 is connected between the solvent storage tank 20 and the spray member 31, and the transfer pump 23 is used for pumping the solvent to the spray member 31. When the material mixing device 100 needs to spray the solvent into the kneading box 30, the delivery pump 23 is controlled to operate, the delivery pump 23 provides pressure to the delivered solvent, and the delivery pump 23 can pump the solvent in the solvent storage tank 20 to the spraying part 31, so that the solvent is sprayed into the kneading box 30 from the spraying part 31. And, by controlling the rotational speed of the delivery pump 23, the speed of the solvent adding process is controllable.

The utility model discloses an in some embodiments, delivery pump 23 can select for use centrifugal pump and axial-flow pump etc. according to the applied scene of equipment. When the delivery pump 23 is a centrifugal pump, the solvent is delivered from the solvent storage tank 20 to the delivery pump 23, the impeller in the delivery pump 23 pushes the solvent in a rotating manner, so as to generate centrifugal force, so that the solvent moves outwards from the center of the delivery pump 23, and obtains kinetic energy increment, when the solvent is thrown out into the scroll-shaped flow channel, due to the reduction of the solvent speed, part of the kinetic energy is converted into pressure energy, so as to overcome the pressure of the discharge pipeline, the solvent continuously flows outwards, the solvent at the suction inlet of the impeller forms low pressure due to outward throwing, and forms pressure difference with the suction pool, so that the solvent in the suction pool is continuously pressed into the suction inlet of the impeller of the delivery pump 23 under the action of liquid level pressure, and a continuous pumping action is formed. When the delivery pump 23 is an axial flow pump, the solvent is delivered from the solvent storage tank 20 to the delivery pump 23, the solvent obtains energy by extrusion propulsion of rotating blades inside the delivery pump 23, the pressure and the kinetic energy of the solvent are increased, the solvent flows in the axial direction by rotation of an impeller of the delivery pump 23, and the solvent flows out in the axial direction after obtaining energy in a blade channel.

In some embodiments of the present invention, as shown in fig. 1, the material mixing apparatus 100 further includes: the mixing tank 22 and the solvent storage tank 20 are plural, the plural solvent storage tanks 20 are selectively communicated with the mixing tank 22, and the mixing tank 22 is connected with the delivery pump 23. Among them, the plurality of solvent storage tanks 20 may store a plurality of solvents, respectively, such as: one solvent is stored in one solvent storage tank 20, the material mixing device 100 can realize spraying of one or more solvents, each solvent storage tank 20 is selectively communicated with the mixing tank 22, when the solvent storage tanks 20 are communicated with the mixing tank 22, the solvents in the solvent storage tanks 20 can flow into the mixing tank 22, when a plurality of solvent storage tanks 20 are simultaneously communicated with the mixing tank 22, after the solvents in the solvent storage tanks 20 flow into the mixing tank 22, the solvents are uniformly mixed in the mixing tank 22 and then are pumped to the spraying piece 31 by the conveying pump 23, so that the solvents which can be sprayed by the spraying piece 31 can be single or multiple, the material mixing device 100 is more convenient to use, and the application range is wider.

And, through setting up a plurality of solvent holding vessel 20, can select corresponding solvent to drench and spout according to current material mixing needs to realize the intensive mixing of material powder and solvent.

In some embodiments of the present invention, the solvent may be a plurality of solvents, and the plurality of solvents may be a hexadecane, B dioxane, C propylene carbonate, etc. and the specific kind of the solvent is specifically selected according to actual needs.

In some embodiments of the present invention, as shown in fig. 1, a first transfer line 24 is connected between the mixing tank 22 and the solvent storage tank 20, and the first transfer line 24 is provided with a liquid mass flow meter 21. Further, the number of the first infusion tubes 24 is plural, and the plural first infusion tubes 24 are connected to the plural solvent storage tanks 20 in a one-to-one correspondence manner, it can also be understood that one first infusion tube 24 is connected between each solvent storage tank 20 and the mixing tank 22, and each first infusion tube 24 is provided with the liquid mass flow meter 21. The liquid mass flow meter 21 is used to detect the flow rate of the solvent in the corresponding first infusion tube 24, and the liquid mass flow meter 21 can also control the conduction or disconnection of the corresponding first infusion tube 24.

When the solvent needs to be conveyed into the mixing tank 22, the liquid mass flow meter 21 on the first liquid conveying pipe 24 is controlled to be opened, the first liquid conveying pipe 24 is enabled to be communicated with the mixing tank 22 and the corresponding solvent storage tank 20, the solvent in the solvent storage tank 20 flows into the mixing tank 22 along the first liquid conveying pipe 24, meanwhile, the liquid mass flow meter 21 can measure the amount of the solvent flowing into the mixing tank 22, when the liquid mass flow meter 21 measures that the solvent flowing into the mixing tank 22 reaches a target value, the liquid mass flow meter 21 is controlled to be closed, the first liquid conveying pipe 24 is disconnected, and at this time, the solvent in the solvent storage tank 20 cannot flow into the mixing tank 22. So set up can accurate control solvent use amount, under the suitable circumstances of solvent and material powder proportion, can guarantee that the solvent use amount is as few as possible to can practice thrift the solvent use amount, avoid solvent extravagant.

Further, liquid mass flow meter 21 can be connected with the controller, and when liquid mass flow meter 21 measured the solvent that passes through first transfer line 24 and reached the required demand of current work, the controller can send control signal to liquid mass flow meter 21, makes liquid mass flow meter 21 close, stops to carry the solvent to blending tank 22 through first transfer line 24, avoids causing the waste of solvent at the in-process of material mixing apparatus 100 production to reduce the purpose of solvent addition volume.

In some embodiments of the present invention, as shown in fig. 1, a second infusion line 25 is connected between the delivery pump 23 and the spray member 31. When the delivery pump 23 is operated, the delivery pump 23 can deliver the solvent in the mixing tank 22 to the spraying part 31 located in the kneading box 30 through the second delivery pipe 25, so as to achieve the purpose of delivering the solvent to the spraying part 31. And, when the delivery pump 23 is working, the spraying piece 31 sprays the solvent into the kneading box 30, meanwhile, the material powder in the storage tank 15 can be delivered into the kneading box 30 through the first delivery pipe 12, after the material powder and the solvent are mixed, the softening critical point can be reduced, and the kneading box 30 can sufficiently knead the material powder and the solvent, so that the material powder and the adhesive are sufficiently bonded. And, in the process of delivering the material powder to the kneading box 30, a plurality of solvents are sprayed into the kneading box 30, so that the solvents and the material powder are fully mixed, the mixing time of the solvents and the material is shortened, the mixing efficiency is improved, and the addition amount of the solvents is reduced.

In some embodiments of the present invention, as shown in fig. 1, the spraying member 31 is provided in a plurality, and it can be understood that the spraying member 31 inside the kneading box 30 is provided in a plurality, and two adjacent spraying members 31 are spaced apart from each other. Spray the piece 31 and can set up roof and/or lateral wall and/or the diapire at kneading case 30, and the material gets into kneading case 30 when inside through first conveying pipeline 12, and the solvent sprays in kneading case 30 through a plurality of spray the piece 31 of drenching, can make material and solvent more intensive mixing, makes material powder and binder fully contact, further shortens solvent and material mixing time, promotes mixing efficiency, thereby reduces the purpose of solvent addition. And, through setting up a plurality of spraying 31, can realize all-round, three-dimensional spraying, solvent and material powder can add the in-process intensive mixing again, and solvent and material powder add the in-process, can open kneading box 30 work, make solvent and material powder get into in the material powder better.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A material mixing apparatus suitable for use in a dry electrode comprising:

the kneading box is internally provided with a spraying piece;

the crushing assembly is used for crushing materials and conveying the crushed materials into the kneading box;

the solvent storage tank is used for storing a solvent, the solvent storage tank is selectively communicated with the spraying piece, the spraying piece is used for spraying the solvent into the kneading box, and the kneading box is used for kneading the solvent and the crushed materials.

2. The material mixing apparatus for a dry electrode according to claim 1, wherein the crushing assembly comprises: the crusher is used for crushing materials, and the first conveying pipeline is communicated with the crusher and the kneading box.

3. The material mixing apparatus for a dry electrode according to claim 2, wherein the breaker assembly further comprises: the storage tank, the storage tank is connected the knapper with between the first conveying pipeline, first conveying pipeline intercommunication the storage tank with the kneading box, the storage tank with the knapper selectively communicates.

4. The material mixing apparatus for a dry electrode according to claim 3, wherein the crushing assembly further comprises: the storage tank is arranged on the weighing piece.

5. The material mixing apparatus for dry electrodes according to claim 3, wherein a second feed conduit is connected between the storage tank and the crusher, the second feed conduit being adapted to communicate the storage tank and the crusher;

the second conveying pipeline is provided with an opening and closing valve.

6. The material mixing device suitable for the dry electrode according to claim 1, wherein a delivery pump is connected between the solvent storage tank and the spray member, and the delivery pump is used for pumping the solvent to the spray member.

7. The material mixing apparatus for dry electrodes according to claim 6, further comprising: a mixing tank, the solvent holding vessel is a plurality of, a plurality of the solvent holding vessel all selectively with the mixing tank intercommunication, just the mixing tank with the delivery pump is connected.

8. The material mixing device suitable for the dry electrode according to claim 7, wherein a first liquid conveying pipe is connected between the mixing tank and the solvent storage tank, and the first liquid conveying pipe is provided with a liquid mass flow meter.

9. The material mixing apparatus for a dry electrode according to claim 6, wherein a second liquid pipe is connected between the delivery pump and the spray member.

10. The material mixing apparatus for dry electrodes according to any one of claims 1 to 9, wherein the spray member is provided in plurality, and two adjacent spray members are spaced apart.