Electrolyte slurry stirring device and battery production equipment

Abstract

The utility model relates to an electrolyte slurry stirring device and battery production equipment, and the electrolyte slurry stirring device comprises a stirring main body which is internally provided with a first cavity for accommodating electrolyte slurry; a cooling pipeline surrounding the peripheral side of the first cavity is formed on the heat dissipation body, and the cooling pipeline is used for circulating a cooling medium; and the refrigerating system is communicated with the cooling pipeline and is used for performing circulating refrigeration on the cooling medium in the cooling pipeline. According to the electrolyte slurry stirring device, the cooling body and the refrigerating system are arranged in a matched mode, the refrigerating system is communicated with the cooling pipeline so as to circularly refrigerate the cooling medium in the cooling pipeline, the cooling medium continuously exchanges heat with the electrolyte slurry in the first cavity in the stirring process, and heat generated when the electrolyte slurry is stirred is taken away; the temperature in the first cavity is maintained in a stable range, the volatilization probability of a solvent in the electrolyte slurry is reduced, the stability of the electrolyte slurry is improved, and the performance of the solid-state battery is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a slurry stirring device and a battery production equipment. BACKGROUND

[0002] The electrolyte slurry stirring and kneading is a process in the production of solid-state batteries, generally relying on the shear force, extrusion force, tensile force and adhesion force generated by the rotation of the stirrer to mix the electrolyte powder, solvent, binder and other components in the electrolyte slurry uniformly. The stability of the electrolyte slurry directly affects the performance of the solid-state battery.

[0003] In the related art, the stirrer generates a large friction force during the stirring and kneading of the electrolyte slurry, generates a large amount of heat, and causes the stirring cavity to heat up quickly. The high temperature can cause the solvent in the electrolyte slurry to evaporate, increase the instability of the electrolyte slurry, and reduce the performance of the solid-state battery. CONTENT OF THE INVENTION

[0004] The present application aims to solve the problem of solvent evaporation caused by heat in the related art electrolyte slurry stirring and kneading process, which increases the instability of the electrolyte slurry and reduces the performance of the solid-state battery. To this end, the present application provides an electrolyte slurry stirring device and a battery production equipment.

[0005] In a first aspect, the present application provides an electrolyte slurry stirring device, comprising:

[0006] a stirring body, which forms a first cavity inside for accommodating electrolyte slurry;

[0007] a heat sink, which forms a cooling pipeline around the periphery of the first cavity, and the cooling pipeline is used for circulating cooling medium;

[0008] a refrigeration system, which is in communication with the cooling pipeline and is used for circulating refrigeration of the cooling medium in the cooling pipeline.

[0009] The electrolyte slurry stirring device according to the first aspect of the present application has at least the following beneficial effects:

[0010] The electrolyte slurry stirring device of the present application is provided by the cooperation of the heat sink and the refrigeration system. The cooling pipeline formed by the heat sink is arranged around the periphery of the first cavity of the stirring body. The refrigeration system is in communication with the cooling pipeline to circulate refrigeration of the cooling medium in the cooling pipeline. The cooling medium in the cooling pipeline and the electrolyte slurry in the first cavity continue to exchange heat during the stirring process, take away the heat generated when the electrolyte slurry is stirred, maintain the temperature in the first cavity within a stable range, reduce the probability of solvent evaporation in the electrolyte slurry, improve the stability of the electrolyte slurry, and further improve the performance of the solid-state battery.

[0011] In some embodiments, the cooling pipe is configured as a spiral pipe, and the cooling pipe spirally extends from the bottom of the first cavity to the top of the first cavity.

[0012] In this way, the contact area between the cooling pipe and the wall surface of the first cavity is increased, the cooling and heat dissipation efficiency of the cooling pipe on the first cavity is improved, the temperature in the first cavity is further maintained within a stable range, and the stability of the electrolyte slurry is improved.

[0013] In some embodiments, the cooling pipe is attached to the outside of the wall surface of the first cavity.

[0014] In this way, the cooling medium flowing in the cooling pipe exchanges heat with the electrolyte slurry in the first cavity, absorbs the heat generated by the electrolyte slurry during stirring, maintains the stability of the electrolyte slurry, and does not change the overall structure of the stirring body, thereby improving the compatibility and adaptability of the electrolyte slurry stirring device.

[0015] In some embodiments, the cooling pipe is embedded in the inside of the wall surface of the first cavity.

[0016] In this way, the heat exchange path between the cooling pipe and the first cavity is shortened, the cooling medium in the cooling pipe can quickly exchange heat with the electrolyte slurry in the first cavity, the cooling and heat dissipation efficiency of the electrolyte slurry in the first cavity is improved, and the probability of solvent evaporation in the electrolyte slurry due to the temperature rise in the first cavity within a short time is reduced.

[0017] In some embodiments, the heat sink is sleeved on the stirring body, a second cavity surrounding the first cavity is formed in the inside of the heat sink, and the cooling pipe is arranged in the second cavity.

[0018] In this way, the cooling pipe surrounds the first cavity, the overall structure of the stirring body does not need to be changed, and the structure of the heat sink can be adaptively arranged according to the contour of the first cavity, thereby simplifying the arrangement process of the cooling pipe.

[0019] In some embodiments, the heat sink includes a first clamping body and a second clamping body, and the first clamping body and the second clamping body are detachably spliced to form a third cavity clamping the stirring body.

[0020] In this way, the cooling pipe can be directly arranged on the wall surface of the first clamping body and the second clamping body, so that the cooling pipe surrounds the peripheral wall of the first cavity after the first clamping body and the second clamping body are abutted and spliced, the arrangement process of the cooling pipe is simplified, and the heat sink is convenient to detach from the stirring body; meanwhile, the cooling pipe can more closely contact the wall surface of the first cavity, the heat conduction path is shortened, and the cooling and heat dissipation efficiency of the cooling medium on the electrolyte slurry in the first cavity is improved.

[0021] In some embodiments, the cooling pipeline comprises a first pipeline and a second pipeline, the first pipeline and the second pipeline are respectively arranged in the first clamp body and the second clamp body, and the first pipeline and the second pipeline are in series communication or parallel communication.

[0022] In this way, the split structure of the first pipeline and the second pipeline is matched, the overall layout process of the cooling pipeline is simplified, and the shape trajectory of the first pipeline and / or the second pipeline is adjusted conveniently to meet the actual heat dissipation demand.

[0023] In some embodiments, the stirring bodies and the heat sinks are multiple, the multiple stirring bodies and the multiple heat sinks are arranged one by one in a one-to-one correspondence, and the cooling pipelines of all the heat sinks are in series communication or parallel communication.

[0024] In this way, a single refrigeration system circulates refrigeration for multiple cooling pipelines, so as to realize cooling and heat dissipation of the electrolyte slurry in the multiple first cavities, improve the cooling and heat dissipation efficiency of the electrolyte slurry, and further improve the production efficiency of the solid-state battery.

[0025] In some embodiments, the cooling pipeline is configured as a heat pipe structure.

[0026] In this way, compared with a conventional metal pipeline, a unit weight of the heat pipe can transfer more heat, and has smaller thermal resistance, good heat transfer and heat conduction performance, which can improve the heat exchange efficiency between the cooling medium in the cooling pipeline and the electrolyte slurry in the first cavity, improve the cooling and heat dissipation efficiency of the electrolyte slurry in the first cavity, further maintain the temperature in the first cavity in a stable range, and improve the stability of the electrolyte slurry.

[0027] In a second aspect, the present application provides a battery production equipment, the battery production equipment comprising the electrolyte slurry stirring device.

[0028] According to the battery production equipment of the second aspect of the present application, at least the following beneficial effects are achieved:

[0029] The battery production equipment of the present application, due to the configuration of the above-mentioned electrolyte slurry stirring device, also has the same technical effects brought by the electrolyte slurry stirring device, that is, through the cooperation of the heat sink and the refrigeration system, the cooling pipeline formed by the heat sink is arranged around the first cavity of the stirring body, the refrigeration system is communicated with the cooling pipeline to circulate and refrigerate the cooling medium in the cooling pipeline, the cooling medium in the cooling pipeline continuously exchanges heat with the electrolyte slurry in the first cavity during stirring, carries away the heat generated when the electrolyte slurry is stirred, maintains the temperature in the first cavity within a stable range, reduces the probability of solvent volatilization in the electrolyte slurry, improves the stability of the electrolyte slurry, and further improves the performance of the solid-state battery.

[0030] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented in accordance with the content of the specification, and in order to enable the above and other purposes, features and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same or similar elements. In the drawings:

[0032] Figure 1 Structure diagram of the electrolyte slurry stirring device of the embodiment of the present application Figure 1 .

[0033] Figure 2 Structure diagram of the electrolyte slurry stirring device of the embodiment of the present application Figure 2 .

[0034] Figure 3 Structure diagram of the electrolyte slurry stirring device of the embodiment of the present application Figure 3 .

[0035] Figure 4 Top view structure diagram of the heat sink of the embodiment of the present application.

[0036] Explanation of reference numerals: stirring body 100; first cavity 110; wall surface outside 111; wall surface inside 112; wall surface inside 113; heat sink 200; cooling pipeline 210; first pipeline 211; second pipeline 212; second cavity 220; first clamping body 230; second clamping body 240; third cavity 250; refrigeration system 300. DETAILED DESCRIPTION

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0038] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0040] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically defined and limited otherwise, if there is a description of a first feature on a second feature, or similar descriptions, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature can be above, above and above, and above the second feature, which can be directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature below, below and below the second feature can be directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0043] With the popularity and promotion of new energy vehicles, the charging and discharging performance, endurance capability and the like of new energy vehicles are increasingly attracting people's attention and attention. As the power source of new energy vehicles, power batteries are widely used.

[0044] As one of the future development trends of power batteries, solid-state batteries have the advantages of high energy density and good safety.

[0045] Electrolyte slurry stirring and kneading is a process in the production of solid-state batteries. Generally, the shear force, extrusion force, tensile force and adhesion force generated by the rotation of the stirrer are used to mix the electrolyte powder, solvent, binder and other components in the electrolyte slurry uniformly. The stability of the electrolyte slurry directly affects the performance of the solid-state battery.

[0046] In the related art, the stirrer generates a large friction force during the stirring and kneading of the electrolyte slurry, generates a large amount of heat, and rapidly heats the stirring cavity. The high temperature can cause the solvent in the electrolyte slurry to volatilize, increase the instability of the electrolyte slurry, and reduce the performance of the solid-state battery.

[0047] Based on this, in order to solve the problem that the solvent in the electrolyte slurry is volatilized by heat during the stirring and kneading process of the electrolyte slurry, thereby increasing the instability of the electrolyte slurry and reducing the performance of the solid-state battery, one or more embodiments of the present application provide an electrolyte slurry stirring device. Through the cooperation of the heat sink and the refrigeration system, the cooling pipeline formed by the heat sink is arranged around the first cavity of the stirring main body. The refrigeration system is in communication with the cooling pipeline to circulate and refrigerate the cooling medium in the cooling pipeline. The cooling medium in the cooling pipeline continuously exchanges heat with the electrolyte slurry in the first cavity during the stirring process, takes away the heat generated by the electrolyte slurry during stirring, maintains the temperature in the first cavity within a stable range, reduces the probability of solvent volatilization in the electrolyte slurry, improves the stability of the electrolyte slurry, and further improves the performance of the solid-state battery.

[0048] Referring to Figure 1 , the present application provides an electrolyte slurry stirring device, which comprises a stirring main body 100, a heat sink 200 and a refrigeration system.

[0049] The inside of the stirring main body 100 forms a first cavity 110 for containing electrolyte slurry. The heat sink 200 forms a cooling pipeline 210 around the first cavity 110, and the cooling pipeline 210 is used to circulate cooling medium.

[0050] The refrigeration system 300 is in communication with the cooling pipeline 210 for circulating and refrigerating the cooling medium in the cooling pipeline 210.

[0051] It should be noted that in the present application, the electrolyte slurry can be an electrolyte slurry used for producing a solid-state battery, which comprises electrolyte solid powder, solvent, binder and other constituent ingredients, and the proportion and mass percentage of each constituent ingredient are configured and adjusted according to actual production requirements.

[0052] After the electrolyte slurry is stirred and kneaded, a uniform positive electrode slurry or a uniform negative electrode slurry is obtained. The uniform positive electrode slurry is coated on the positive electrode current collector aluminum foil, and the uniform negative electrode slurry is uniformly coated on the negative electrode current collector copper foil. Then, after drying, cold pressing and cutting, a positive electrode sheet or a negative electrode sheet is obtained.

[0053] Of course, the uniform electrolyte slurry can also be uniformly coated on the surface of a glass plate, and after drying, cold pressing and cutting, an electrolyte sheet is obtained for use in solid-state battery production.

[0054] In the present application, referring to Figure 1 , the stirring main body 100 refers to a stirring container structure capable of containing electrolyte slurry and stirring and kneading the electrolyte slurry, and the first cavity 110 of the stirring main body 100 is formed by the outer wall of the stirring main body 100.

[0055] The stirring body 100 can include a stirring paddle (not shown in the figure) arranged in the first cavity 110 of the stirring body 100, driven by an external force or manually stirred, so that the stirring paddle stirs the electrolyte slurry in the first cavity 110 to achieve kneading and stirring of the electrolyte slurry.

[0056] To improve the stirring efficiency of the electrolyte slurry, multiple stirring paddles can be arranged in the first cavity 110 along the height direction of the first cavity 110, and each stirring paddle includes multiple circumferentially spaced blades.

[0057] Of course, in other embodiments, the stirring paddle is configured as a folded frame stirring paddle, two folded frame stirring paddles are arranged in the first cavity 110, and the stirring paddle is driven by a planetary gear to rotate in a planet motion while also rotating in an orbit motion, so that the slurry in the first cavity 110 moves up and down and rotates circumferentially, and the electrolyte powder, solvent, binder and other components in the electrolyte slurry are mixed uniformly in a short time.

[0058] In the present application, the heat sink 200 can be arranged on the stirring body 100. The cooling pipe 210 on the heat sink 200 can be directly arranged on the inner side 113 of the wall of the first cavity 110, or can be arranged on the outer side 111 of the wall of the first cavity 110. When the cooling pipe 210 is arranged on the inner side 113 of the wall of the first cavity 110, the cooling medium circulating in the cooling pipe 210 exchanges heat with the slurry in the first cavity 110 through the passage wall of the cooling pipe 210; when the cooling pipe 210 is arranged on the outer side 111 of the wall of the first cavity 110, the cooling medium circulating in the cooling pipe 210 exchanges heat with the slurry in the first cavity 110 through the wall of the first cavity 110 and the passage wall of the cooling pipe 210. In this way, the cooling medium in the cooling pipe 210 timely takes away the heat generated by the stirring slurry in the first cavity 110, so that the temperature in the first cavity 110 is maintained within a stable range, the probability of solvent evaporation in the electrolyte slurry is reduced, and the stability of the electrolyte slurry is improved.

[0059] In the present application, the refrigeration system 300 can be configured as a compression vapor refrigeration device, and the refrigeration system 300 is in communication with the cooling pipe 210, so that the cooling medium circulating in the cooling pipe continuously cools and dissipates heat from the slurry during stirring, so that the temperature in the first cavity 110 is maintained within a stable range.

[0060] The cooling medium can be, but is not limited to, a gaseous refrigerant such as low-temperature nitrogen, etc., or a liquid refrigerant such as acetone, etc.

[0061] It can be understood that, by means of the cooperation of the stirring body 100, the heat sink 200 and the refrigeration system 300, the cooling pipeline 210 formed by the heat sink 200 is arranged around the first cavity 110, the refrigeration system 300 is in communication with the cooling pipeline 210 to circulate refrigeration of the cooling medium in the cooling pipeline 210, the cooling medium in the cooling pipeline 210 and the electrolyte slurry in the first cavity 110 during the stirring process continuously exchange heat, the heat generated during the stirring of the electrolyte slurry is taken away, the temperature in the first cavity 110 is maintained within a stable range, the probability of solvent volatilization in the electrolyte slurry is reduced, the stability of the electrolyte slurry is improved, and the performance of the solid-state battery is improved.

[0062] Referring to Figure 1 and Figure 2 In some embodiments of the present application, the cooling pipeline 210 is configured as a spiral pipeline, and the cooling pipeline 210 spirally extends from the bottom of the first cavity 110 to the top of the first cavity 110.

[0063] Specifically, the cooling pipeline 210 is attached to the inner side 113 or the outer side 111 of the wall surface of the first cavity 110 in a spiral upward trajectory, so that the cooling pipeline 210 completely covers the peripheral wall of the first cavity 110. The inlet and outlet of the cooling pipeline 210 are respectively distributed at opposite ends of the bottom of the first cavity 110, and the inlet and outlet of the cooling pipeline 210 are respectively in communication with the refrigeration system 300.

[0064] It can be understood that, by configuring the cooling pipeline 210 as a spiral pipeline, the contact area of the cooling pipeline 210 with the wall surface of the first cavity 110 is increased, the cooling and heat dissipation efficiency of the cooling pipeline 210 on the first cavity 110 is improved, the temperature in the first cavity 110 is further maintained within a stable range, and the stability of the electrolyte slurry is improved.

[0065] In some embodiments of the present application, referring to Figure 1 , the cooling pipeline 210 is attached to the outer side 111 of the wall surface of the first cavity 110.

[0066] It should be noted that the wall surface of the first cavity 110 has a certain thickness, and the opposite sides of the wall surface of the first cavity 110 in the thickness direction are the outer side 111 of the wall surface of the first cavity 110 and the inner side 113 of the wall surface of the first cavity 110, respectively. The outer side 111 of the wall surface of the first cavity 110 refers to the side of the wall surface of the first cavity 110 away from the first cavity 110, and the inner side 113 of the wall surface of the first cavity 110 refers to the side of the wall surface of the first cavity 110 close to the first cavity 110. The cooling pipeline 210 spirally winds around the outer side 111 of the wall surface of the first cavity 110.

[0067] The stirring body 100 is a metal heat-conducting structure. For example, the stirring body 100 is configured as an aluminum alloy structure, so that the wall surface of the first cavity 110 has good heat conductivity.

[0068] By attaching the cooling pipe 210 to the outer side 111 of the wall surface of the first cavity 110, the cooling medium flowing in the cooling pipe 210 exchanges heat with the electrolyte slurry in the first cavity 110, absorbs the heat generated by the electrolyte slurry during stirring, maintains the stability of the electrolyte slurry, and does not change the overall structure of the stirring body 100, thereby improving the compatibility and adaptability of the electrolyte slurry stirring device.

[0069] In some embodiments of the present application, referring to Figure 2 , the cooling pipe 210 is embedded in the inner side 112 of the wall surface of the first cavity 110.

[0070] Specifically, the wall surface of the stirring body 100 surrounds the first cavity 110, the wall surface of the stirring body 100 is a hollow cavity structure, the cooling pipe 210 is embedded in the inner side of the wall surface of the stirring body 100, and extends from the bottom to the top of the first cavity 110 in a spiral trajectory, so as to increase the coverage area of the cooling pipe 210 on the peripheral wall of the first cavity 110.

[0071] Of course, in other embodiments, the wall surface of the stirring body 100 can also be a solid structure, and the spiral cooling pipe 210 can be formed on the wall surface of the stirring body 100 by pouring or mold forming.

[0072] It should be understood that by embedding the cooling pipe 210 in the inner side 112 of the wall surface of the first cavity 110, the heat exchange path between the cooling pipe 210 and the first cavity 110 is shortened, so that the cooling medium in the cooling pipe 210 can quickly exchange heat with the electrolyte slurry in the first cavity 110, improve the cooling and heat dissipation efficiency of the electrolyte slurry in the first cavity 110, and reduce the probability of solvent evaporation in the electrolyte slurry due to the rapid increase of the temperature in the first cavity 110.

[0073] In addition, in other embodiments, referring to Figure 3 , the cooling pipe 210 can also be arranged in the inner side 113 of the wall surface of the first cavity 110 in a spiral trajectory, so that the cooling pipe 210 directly contacts the electrolyte slurry in the first cavity 110, further shortens the heat conduction path between the cooling pipe 210 and the first cavity 110, and improves the cooling and heat dissipation efficiency of the electrolyte slurry.

[0074] In some embodiments of the present application, referring again to Figure 1The heat sink 200 is sleeved on the stirring main body 100, a second cavity 220 is formed inside the heat sink 200 and surrounds the first cavity 110, and the cooling pipeline 210 is arranged in the second cavity 220.

[0075] Specifically, the stirring main body 100 is configured as an annular column structure, and the first cavity 110 corresponds to an annular column. Correspondingly, the heat sink 200 is configured as an annular column structure that is matched with the shape contour of the first cavity 110, and the heat sink 200 is sleeved on the first cavity 110 from top to bottom or from bottom to top, and the wall surface of the heat sink 200 surrounds the second cavity 220, and the second cavity 220 corresponds to the first cavity 110, and at this time, the first cavity 110 and the second cavity 220 are coaxially distributed.

[0076] The cooling pipeline 210 is embedded in the wall surface inside the second cavity 220 or attached to the inner side of the wall surface of the second cavity 220, and the cooling pipeline 210 extends from the bottom to the top of the second cavity 220 in a spiral track, so as to increase the coverage area of the cooling pipeline 210 on the peripheral wall of the first cavity 110.

[0077] By configuring the heat sink 200 to be directly sleeved on the structure of the stirring main body 100 and arranging the cooling pipeline 210 in the second cavity 220 formed inside the heat sink 200, the cooling pipeline 210 surrounds the first cavity 110, without changing the overall structure shape of the stirring main body 100, and only the structure of the heat sink 200 needs to be adaptively arranged according to the shape contour of the first cavity 110, thereby simplifying the arrangement process of the cooling pipeline 210.

[0078] In some embodiments of the present application, referring to Figure 4 The heat sink 200 includes a first clamping body 230 and a second clamping body 240, and the first clamping body 230 and the second clamping body 240 are detachably spliced to form a third cavity 250 for clamping the stirring main body 100.

[0079] Specifically, the stirring main body 100 is a circular annular column structure, the first clamping body 230 and the second clamping body 240 have the same shape, both of which are half circular annular column structures, and after splicing, the first clamping body 230 and the second clamping body 240 form the third cavity 250 with an inner diameter matched with the outer diameter of the third cavity 250, so as to be adaptively sleeved on the stirring main body 100. The first clamping body 230 and the second clamping body 240 are detachably connected through a detachable structure such as threaded connection, buckle connection, lock connection and the like.

[0080] Of course, in other embodiments, the stirring main body 100 can also be configured as other shape structures, such as a square column, a hexagonal column, etc., and correspondingly, the first clamping body 230 and the second clamping body 240 are symmetrical half square columns, hexagonal columns, etc., and the specific shape is not limited.

[0081] Further, it should be noted that the inner side of the wall surface of the first clamp body 230 can be provided with the cooling pipe 210 extending in a spiral trajectory, and the inner side of the wall surface of the second clamp body 240 can also be provided with the cooling pipe 210 extending in a spiral trajectory. The cooling pipe 210 on the inner side of the wall surface of the first clamp body 230 and the cooling pipe 210 on the inner side of the wall surface of the second clamp body 240 can be connected through flanges to be in series connection after the first clamp body 230 and the second clamp body 240 are spliced.

[0082] By constructing the heat sink 200 as a spliced structure of the first clamp body 230 and the second clamp body 240, the cooling pipe 210 can be directly arranged on the wall surface of the first clamp body 230 and the second clamp body 240, so that the cooling pipe 210 surrounds the wall of the first cavity 110 after the first clamp body 230 and the second clamp body 240 are abutted and spliced. This simplifies the arrangement process of the cooling pipe 210 and facilitates the disassembly of the heat sink 200 from the stirring main body 100. At the same time, the cooling pipe 210 can be more closely in contact with the wall surface of the first cavity 110, the heat conduction path is shortened, and the cooling and heat dissipation efficiency of the cooling medium on the electrolyte slurry in the first cavity 110 is improved.

[0083] Further, referring to Figure 4 , the cooling pipe 210 includes a first pipe 211 and a second pipe 212, the first pipe 211 and the second pipe 212 are respectively arranged in the first clamp body 230 and the second clamp body 240, and the first pipe 211 and the second pipe 212 are in series connection or parallel connection.

[0084] Specifically, the first pipe 211 is arranged on the side of the first clamp body 230 close to the stirring main body 100 and extends in a spiral trajectory from the bottom to the top of the first clamp body 230. Similarly, the second pipe 212 is arranged on the side of the second clamp body 240 close to the stirring main body 100 and extends in a spiral trajectory from the bottom to the top of the second clamp body 240.

[0085] And the vertical projection of the first pipe 211 relative to the wall surface of the first cavity 110 is staggered with the vertical projection of the second pipe 212 relative to the wall surface of the first cavity 110, and the two vertical projections partially overlap or have no overlapping area. In this way, after the first clamp body 230 and the second clamp body 240 are abutted and spliced, the annular surface formed by the abutment of the first pipe 211 and the second pipe 212 can basically cover the entire wall surface of the first cavity 110, so as to improve the cooling efficiency of the electrolyte slurry.

[0086] In addition, it should be noted that the first pipe 211 and the second pipe 212 are in series connection, and the two pipes form a circulating refrigeration flow path for the cooling medium together with the refrigeration system 300.

[0087] Of course, the first pipeline 211 and the second pipeline 212 can also be connected in parallel, and the refrigeration system 300 forms a circulating refrigeration flow path for the cooling medium to flow through the first pipeline 211 and the second pipeline 212, respectively, so that the cooling medium in the first pipeline 211 and the cooling medium in the second pipeline 212 are relatively independent and do not interfere with each other, thereby improving the cooling and heat dissipation efficiency of the electrolyte slurry in the first cavity 110.

[0088] It is not difficult to understand that by arranging the cooling pipeline 210 as the first pipeline 211 and the second pipeline 212 connected in series or in parallel, and cooperating with the split structure of the first pipeline 211 and the second pipeline 212, the overall layout process of the cooling pipeline 210 is simplified, and at the same time, the shape trajectory of the first pipeline 211 and / or the second pipeline 212 is adjusted to meet the actual heat dissipation demand.

[0089] In some embodiments of the present application, the stirring body 100 and the heat sink 200 are both provided in plurality, and the plurality of stirring bodies 100 and the plurality of heat sinks 200 are arranged one-to-one, and the cooling pipelines 210 of all the heat sinks 200 are connected in series or in parallel.

[0090] Specifically, the cooling pipelines 210 of all the heat sinks 200 are connected in series to form a circulating refrigeration flow path for the cooling medium to flow through the refrigeration system 300.

[0091] Alternatively, the cooling pipelines 210 of all the heat sinks 200 are connected in parallel by the refrigeration system 300, and the cooling medium in each cooling pipeline 210 is relatively independent and does not interfere with each other.

[0092] A single refrigeration system 300 simultaneously circulates refrigeration for multiple cooling pipelines 210, thereby achieving cooling and heat dissipation for the electrolyte slurry in the multiple first cavities 110, improving the cooling and heat dissipation efficiency of the electrolyte slurry, and further improving the production efficiency of the solid-state battery.

[0093] In some embodiments of the present application, the cooling pipeline 210 is configured as a heat pipe structure.

[0094] Compared with a conventional metal pipeline, a unit weight of the heat pipe can transfer more heat, and has smaller thermal resistance, good heat transfer and thermal conductivity performance, which can improve the heat exchange efficiency between the cooling medium in the cooling pipeline 210 and the electrolyte slurry in the first cavity 110, improve the cooling and heat dissipation efficiency of the electrolyte slurry in the first cavity 110, and further maintain the temperature in the first cavity 110 within a stable range, thereby improving the stability of the electrolyte slurry.

[0095] In addition, the present application also provides a battery production equipment, which comprises the electrolyte slurry stirring device of any of the above embodiments.

[0096] The battery production equipment of the embodiment of the present application is used for producing solid-state batteries. In the electrolyte slurry stirring and kneading process, the electrolyte slurry stirring device can be used for stirring and kneading.

[0097] It can be understood that the battery production equipment of the embodiment of the present application is configured with the electrolyte slurry stirring device, and has the same technical effects brought by the electrolyte slurry stirring device. That is, through the cooperation of the heat sink 200 and the refrigeration system 300, the cooling pipeline 210 formed by the heat sink 200 is arranged around the first cavity 110 of the stirring body 100, the refrigeration system 300 is in communication with the cooling pipeline 210 to circulate refrigeration of the cooling medium in the cooling pipeline 210, the cooling medium in the cooling pipeline 210 continuously exchanges heat with the electrolyte slurry in the first cavity 110 during stirring, carries away the heat generated when the electrolyte slurry is stirred, maintains the temperature in the first cavity 110 within a stable range, reduces the probability of solvent evaporation in the electrolyte slurry, improves the stability of the electrolyte slurry, and further improves the performance of the solid-state battery.

[0098] Referring to Figures 1 to 4 The embodiment of the present application provides an electrolyte slurry stirring device and a battery production equipment.

[0099] The electrolyte slurry stirring device comprises a stirring body 100, a first cavity 110 for accommodating electrolyte slurry is formed inside the stirring body 100; a heat sink 200, the heat sink 200 is formed with a cooling pipeline 210 around the first cavity 110, the cooling pipeline 210 is used for flowing through the cooling medium; a refrigeration system 300, the refrigeration system 300 is in communication with the cooling pipeline 210, and is used for circulating refrigeration of the cooling medium in the cooling pipeline 210.

[0100] The battery production equipment comprises the electrolyte slurry stirring device.

[0101] The electrolyte slurry stirring device and the battery production equipment of the embodiment of the present application are through the cooperation of the heat sink 200 and the refrigeration system 300, the cooling pipeline 210 formed by the heat sink 200 is arranged around the first cavity 110 of the stirring body 100, the refrigeration system 300 is in communication with the cooling pipeline 210 to circulate refrigeration of the cooling medium in the cooling pipeline 210, the cooling medium in the cooling pipeline 210 continuously exchanges heat with the electrolyte slurry in the first cavity 110 during stirring, carries away the heat generated when the electrolyte slurry is stirred, maintains the temperature in the first cavity 110 within a stable range, reduces the probability of solvent evaporation in the electrolyte slurry, improves the stability of the electrolyte slurry, and further improves the performance of the solid-state battery.

[0102] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0103] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An electrolyte slurry stirring device characterized by comprising: The electrolyte slurry stirring device comprises: a stirring body, which has a first cavity for accommodating electrolyte slurry formed inside; a heat sink, which has a cooling pipe formed around the periphery of the first cavity, the cooling pipe being used for circulating cooling medium; a refrigeration system, which is in communication with the cooling pipe and used for circulating refrigeration to the cooling medium in the cooling pipe.

2. The electrolyte slurry agitating device according to claim 1, characterized by The cooling pipe is configured as a spiral pipe, which spirally extends from the bottom of the first cavity to the top of the first cavity.

3. The electrolyte slurry stirring device according to claim 1 or 2, characterized by The cooling pipe is attached to the outside of the wall of the first cavity.

4. The electrolyte slurry stirring device according to claim 1 or 2, characterized by The cooling pipe is embedded in the inside of the wall of the first cavity.

5. The electrolyte slurry stirring device according to claim 1 or 2, characterized by The heat sink is sleeved on the stirring body, and a second cavity surrounding the first cavity is formed inside the heat sink, and the cooling pipe is arranged in the second cavity.

6. The electrolyte slurry agitating apparatus according to claim 5, wherein The heat sink comprises a first clamping body and a second clamping body, which are detachably spliced to form a third cavity clamping the stirring body.

7. The electrolyte slurry agitating apparatus according to claim 6, wherein The cooling pipe comprises a first pipe and a second pipe, which are arranged in the first clamping body and the second clamping body respectively, and the first pipe and the second pipe are in series communication or parallel communication.

8. The electrolyte slurry stirring device according to claim 1 or 2, characterized by The stirring body and the heat sink are both multiple, and the multiple stirring bodies and the multiple heat sinks are arranged one-to-one in correspondence, and the cooling pipes of all the heat sinks are in series communication or parallel communication.

9. The electrolyte slurry stirring device according to claim 1 or 2, characterized by The cooling pipe is configured as a heat pipe structure.

10. A battery production apparatus characterized by comprising: The electrolyte slurry stirring device comprises any one of claims 1 to 9.

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