Temperature adjusting device for pneumatic pulverization of lithium battery negative electrode material and working method thereof

Abstract

The application belongs to the technical field of temperature regulation, and particularly relates to a temperature regulating device for pneumatic crushing of lithium battery negative electrode materials and a working method thereof. The temperature regulating device for pneumatic crushing of lithium battery negative electrode materials comprises a heat dissipation ring, which is provided with an even number of partitions to divide the channel into a plurality of sub-channels, and the interval sub-channels are provided with baffles to block the corresponding sub-channels. The control module is configured to rotate the baffles to the corresponding angle synchronously to increase the heat exchange area of the material and the inner wall of the heat dissipation ring when the temperature data obtained by the temperature sensor exceeds the threshold value, so as to reduce the output temperature of the material at the heat dissipation ring. When cooling is needed, the baffle in the heat dissipation ring is only needed to be rotated to increase the inner wall area of the heat dissipation ring in contact with the material, improve the heat dissipation of the material, and reduce the temperature of the material entering the crushing chamber.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of temperature regulation, and particularly relates to a temperature regulation device for pneumatic crushing of lithium battery negative electrode materials and a working method thereof. BACKGROUND

[0002] The lithium battery negative electrode materials are conveyed into the crushing chamber by air power, and then are rotated in the crushing chamber driven by the airflow generated by the nozzle, so that the lithium battery negative electrode materials collide and break each other. The broken lithium battery negative electrode materials are then sucked away.

[0003] When the negative electrode materials are broken in the crushing chamber, the crushing chamber is heated, and when the temperature exceeds a preset value, the negative electrode materials are thermally decomposed. In related technologies, in order to prevent the temperature in the crushing chamber from exceeding the threshold value, a cold airflow pipeline is connected to the pipeline entering the crushing chamber, so that the cold airflow enters the crushing chamber to reduce the temperature. However, this way is easy to affect the airflow in the crushing chamber, thereby affecting the breaking effect.

[0004] Therefore, how to control the temperature in the crushing chamber without introducing cold airflow is a technical problem that those skilled in the art need to solve.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, the above description is not considered to constitute information of the prior art. SUMMARY

[0006] The present disclosure at least provides a temperature regulation device for pneumatic crushing of lithium battery negative electrode materials and a working method thereof.

[0007] In a first aspect, the present disclosure provides a temperature regulation device for pneumatic crushing of lithium battery negative electrode materials, which comprises: a heat dissipation ring, an even number of partitions are arranged in the heat dissipation ring to divide the channel into a plurality of sub-channels, and baffles are arranged on the interval sub-channels to block the corresponding sub-channels; a drive shaft located at the center of the heat dissipation ring and connected with each baffle; a temperature sensor for acquiring temperature data in the crushing chamber and sending; and a control module electrically connected with the drive shaft and the temperature sensor; wherein the control module is configured to control the drive shaft to drive each baffle to rotate synchronously to a corresponding angle to increase the heat exchange area of the material and the inner wall of the heat dissipation ring when the temperature data acquired by the temperature sensor exceeds a threshold value, so as to reduce the output temperature of the material at the heat dissipation ring by a corresponding temperature difference.

[0008] In an alternative embodiment, the baffle is shaped as a sector that fits the cross section of the sub-channel; one straight edge of the baffle is provided with a driven plate that is inserted into the corresponding sub-channel and closely attached to the adjacent partition; wherein the control module is configured to control the driving shaft to rotate the baffle so as to rotate the driven plate to a corresponding angle with the adjacent partition.

[0009] In an alternative embodiment, the corresponding angle between the driven plate and the adjacent partition is:

[0010]

[0011] wherein T ∞ is the ambient temperature in Celsius; Q is the input heat in watts; h is the convective heat transfer coefficient in the crushing chamber; ΔT1 is the difference between the temperature in the crushing chamber and the preset temperature; L is the length of the pipeline in meters; and R is the radius of the sector in meters.

[0012] In an alternative embodiment, another straight edge of the baffle is provided with a scraping strip that is located in the adjacent sub-channel and closely attached to the adjacent partition; wherein the control module is configured to control the driving shaft to rotate the baffle so that the scraping strip cleans the inner wall of the adjacent sub-channel to ensure the heat exchange efficiency of the heat dissipation ring.

[0013] In an alternative embodiment, the heat dissipation ring is provided with a mounting cylinder at the center; wherein one end of each of the partitions is connected to the mounting cylinder, and the other end is connected to the inner wall of the heat dissipation ring; and the driving shaft is arranged in the mounting cylinder.

[0014] In a second aspect, the embodiments of the present disclosure also provide a working method of a temperature adjusting device for pneumatic crushing of lithium battery negative electrode material, which comprises: separating the channels of the heat dissipation ring into a plurality of sub-channels by an even number of partitions, and arranging baffles on the interval sub-channels to block the corresponding sub-channels; obtaining the temperature data in the crushing chamber by a temperature sensor and sending; and calculating the angle at which the baffle needs to be rotated according to the temperature data.

[0015] In an alternative embodiment, the method of calculating the angle at which the baffle needs to be rotated according to the obtained temperature data comprises: obtaining the difference between the temperature in the crushing chamber and the preset temperature; obtaining the increased heat exchange surface area of the heat dissipation ring; and obtaining the angle data of the angle at which the baffle needs to be rotated to the corresponding angle.

[0016] In an alternative embodiment, the difference between the temperature in the crushing chamber and the preset temperature is ΔT1=T-T0; wherein T is the current temperature data in the crushing chamber obtained by the temperature sensor in Celsius; and T0 is the preset temperature data in the crushing chamber in Celsius.

[0017] In an alternative embodiment, the heat exchange surface area of the heat dissipation ring is increased, that is, S=L*R*theta; wherein L is the length of the pipeline, in meters; R is the radius of the sector, in meters; and theta is the central angle of the sector.

[0018] In an alternative embodiment, the angle data of the corresponding angle to which the baffle needs to be rotated is obtained, that is,

[0019]

[0020] wherein T ∞ is the ambient temperature, in degrees Celsius; Q is the input heat, in watts; and h is the convective heat transfer coefficient in the crushing chamber.

[0021] The beneficial effects of the present application are that the temperature adjusting device for pneumatic crushing of the lithium battery negative electrode material does not use cold air flow to reduce the temperature to avoid the influence of additional air flow on the rotating air flow in the crushing chamber. When cooling is needed, the baffle in the heat dissipation ring is only rotated to increase the inner wall area of the heat dissipation ring in contact with the material, improve the heat dissipation of the material, and reduce the temperature of the material entering the crushing chamber. At the same time, the cross-sectional area of the material flow is not changed during the rotation of the baffle, ensuring the stability of the material flow rate.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application will be realized and achieved by the structure particularly pointed out in the description, claims, and drawings.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] Figure 1 A structural schematic diagram of a lithium battery negative electrode material pneumatic crushing equipment with a temperature adjusting device provided by the embodiments of the present disclosure is shown in the figure.

[0026] Figure 2 A sectional view structural schematic diagram of a temperature adjusting device provided by the embodiments of the present disclosure is shown in the figure.

[0027] Figure 3A structure schematic diagram of a heat dissipation ring provided by an embodiment of the present disclosure is provided.

[0028] Figure 4 A mounting structure schematic diagram of a baffle provided by an embodiment of the present disclosure is provided.

[0029] Figure 5 A structure schematic diagram of the baffle after rotating to a corresponding angle provided by an embodiment of the present disclosure is provided.

[0030] In the figure:

[0031] Heat dissipation ring 1, partition plate 11, sub-channel 12, mounting cylinder 13;

[0032] Baffle 2, driven plate 21, scraping strip 22;

[0033] Drive shaft 3;

[0034] Pulverizing chamber 4;

[0035] Pneumatic conveying pipeline 5;

[0036] Hopper 6. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the present disclosure will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0038] The material in the hopper 6 is conveyed into the pulverizing chamber 4 through the pneumatic conveying pipeline 5, and is guided by the rotating air flow formed by the built-in air nozzle and then collides and breaks, and when the material is pulverized to a corresponding particle size, it will be sucked away by negative pressure; when the material enters the pulverizing chamber 4 for pulverization, it will gradually heat up, and when the temperature rises to a threshold value, the high temperature will cause thermal decomposition of the lithium battery negative material.

[0039] In the related art, in order to avoid thermal decomposition of the material by the high temperature of the pulverizing chamber 4, cold air flow is used to cool the pulverizing chamber 4; however, the cold air flow used will affect the rotating air flow in the pulverizing chamber 4.

[0040] Based on the research on the above problems, the present disclosure provides a temperature adjusting device for pneumatic pulverization of lithium battery negative material.

[0041] It should be noted that like reference numerals and characters refer to like elements throughout the following description with like reference numerals and characters referring to like elements throughout the following description and the appended figures indicating when an element previously defined in one figure is added to a later figure the number of the previously defined element need not be re-numbered throughout all drawings. In addition, in the drawings, the thickness of the components can be exaggerated or reduced in order to effectively describe the technical contents.

[0042] Some embodiments of the present application will be described in detail with reference to the drawings, whereupon the following embodiments and features in the embodiments can be combined with each other without conflict.

[0043] As shown in Figures 1 to 5 At least one embodiment provides a temperature adjusting device for pneumatic crushing of lithium battery negative electrode material, which comprises: a heat dissipation ring 1, an even number of partitions 11 are arranged in the heat dissipation ring 1 to divide the passage into a plurality of sub-paths 12, and a baffle 2 is arranged on the interval sub-paths 12 to block the corresponding sub-paths 12; a drive shaft 3 is located at the center of the heat dissipation ring 1 and connected with each baffle 2; a temperature sensor is used to obtain temperature data in the crushing chamber 4 and send; and a control module is electrically connected with the drive shaft 3 and the temperature sensor; wherein the control module is configured to control the drive shaft 3 to drive each baffle 2 to rotate to a corresponding angle synchronously according to the temperature difference when the temperature data obtained by the temperature sensor exceeds a threshold value, so as to increase the heat exchange area of the material and the inner wall of the heat dissipation ring 1, thereby reducing the output temperature of the material at the heat dissipation ring 1 by a corresponding temperature difference.

[0044] Specifically, the heat dissipation ring 1 is arranged in the pneumatic conveying pipeline 5 close to the crushing chamber 4, when the temperature of the crushing chamber 4 exceeds the threshold value, the heat exchange area of the inner wall of the heat dissipation ring 1 is adjusted to reduce the temperature of the material entering the crushing chamber 4, thereby reducing the temperature of the crushing chamber 4.

[0045] In this embodiment, cold air flow is not used for cooling to avoid the influence of additional air flow on the rotating air flow in the crushing chamber 4, when cooling is needed, only the baffles 2 in the heat dissipation ring 1 are rotated to increase the inner wall area of the heat dissipation ring 1 in contact with the material, improve the heat dissipation of the material to reduce the temperature of the material entering the crushing chamber 4; at the same time, the baffles 2 will not change the cross-sectional area of the material flow during rotation, ensuring the stability of the material flow rate.

[0046] As shown in Figure 2 , Figure 3 In some embodiments, the shape of the baffle 2 is a fan-shaped shape adapted to the cross section of the sub-paths 12; one straight edge of the baffle 2 is provided with a driven plate 21, the driven plate 21 is inserted into the corresponding sub-paths 12 and tightly abuts the adjacent partitions 11; wherein the control module is configured to control the drive shaft 3 to drive the baffle 2 to rotate, so that the driven plate 21 rotates to a corresponding angle between the adjacent partitions 11.

[0047] In one embodiment, the control module is a PLC, the heat dissipation ring 1 is divided into six sub-channels 12 by six partitions 11, and the baffles 2 are arranged on the sub-channels 12 to block the sub-channels 12, that is, only three sub-channels 12 of the heat dissipation ring 1 are used for the passing of the material, and the heat exchange area is only the inner wall of the three sub-channels 12.

[0048] Specifically, when the temperature of the crushing chamber 4 exceeds the threshold value, the control module controls the driving shaft 3 to rotate so that the baffles 2 rotate to the corresponding angle, at which time the blocked sub-channels 12 open to the corresponding angle, and the originally fully open sub-channels 12 are blocked to the corresponding angle, so as to ensure that the flow area of the material does not change, so that the flow rate of the material does not change; at the same time, the sub-channels 12 blocked to the corresponding angle do not change the heat exchange area.

[0049] In some embodiments, the corresponding angle between the driven plate 21 and the adjacent partition 11 is:

[0050]

[0051] wherein T ∞ is the ambient temperature, in degrees Celsius; Q is the input heat, in watts; h is the convective heat transfer coefficient in the crushing chamber; ΔT1 is the difference between the temperature in the crushing chamber and the preset temperature; L is the length of the pipeline, in meters; and R is the radius of the sector, in meters.

[0052] As shown in Figure 4 some embodiments, the other straight edge of the baffle 2 is provided with a scraping strip 22, the scraping strip 22 is located in the adjacent sub-channel 12 and closely contacts the adjacent partition 11; wherein the control module is configured to control the driving shaft 3 to drive the baffle 2 to rotate, so that the scraping strip 22 cleans the inner wall of the adjacent sub-channel 12, so as to ensure the heat exchange efficiency of the heat dissipation ring 1.

[0053] In this embodiment, the material contacts the inner wall of the heat dissipation ring 1 during conveying in the heat dissipation ring 1, and long-time conveying of the material will cause the material to adhere to the inner wall of the heat dissipation ring 1, thereby affecting the heat exchange efficiency of the heat dissipation ring 1. Therefore, the two straight edges of the baffle 2 are respectively provided with the driven plate 21 and the scraping strip 22, which clean the inner wall of the heat dissipation ring 1 by following the rotation of the baffle 2, so as to ensure the heat exchange efficiency of the heat dissipation ring 1.

[0054] As shown in Figure 3 , Figure 4 some embodiments, the mounting cylinder 13 is arranged at the center of the heat dissipation ring 1; wherein one end of each partition 11 is connected with the mounting cylinder 13, and the other end is connected with the inner wall of the heat dissipation ring 1; and the driving shaft 3 is arranged in the mounting cylinder 13.

[0055] In the embodiment, the driving shaft 3 is driven by a servo motor, and the servo motor is controlled by a control module.

[0056] The at least one embodiment also provides a working method of the temperature adjusting device for pneumatic crushing of lithium battery negative electrode material, which comprises: separating the channel of the heat dissipation ring 1 into a plurality of sub-channels 12 by the even number of partitions 11, and arranging the baffles 2 on the interval sub-channels 12 to block the corresponding sub-channels 12; obtaining the temperature data in the crushing chamber 4 by the temperature sensor and sending; obtaining the angle required for the rotation of the baffle according to the temperature data.

[0057] For the specific structure and implementation process of the temperature adjusting device for pneumatic crushing of lithium battery negative electrode material, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0058] In some embodiments, the method of calculating the angle required for the rotation of the baffle according to the obtained temperature data comprises: obtaining the difference between the temperature in the crushing chamber 4 and the preset temperature; obtaining the increased heat exchange surface area of the heat dissipation ring; obtaining the angle data of the rotation of the baffle to the corresponding angle.

[0059] In some embodiments, the difference between the temperature in the crushing chamber 4 and the preset temperature is ΔT1=T-T0; wherein T is the current temperature data in the crushing chamber 4 obtained by the temperature sensor, and the unit is Celsius; T0 is the preset temperature data in the crushing chamber 4, and the unit is Celsius.

[0060] In some embodiments, the increased heat exchange surface area of the heat dissipation ring is S=L*R*θ; wherein L is the length of the pipeline, and the unit is meter; R is the radius of the sector, and the unit is meter; θ is the central angle of the sector.

[0061] In some embodiments, the angle data of the rotation of the baffle to the corresponding angle is

[0062] T 减 =T ∞ +Q / (h*S);

[0063] T 减 =ΔT1;

[0064] Q=m*C*ΔT2;

[0065]

[0066] Wherein, T 减 is the temperature that can be reduced by the heat dissipation ring according to the increased heat exchange surface area, and the unit is Celsius; T ∞T is the ambient temperature in Celsius; Q is the input heat in Watts; h is the convective heat transfer coefficient in the pulverizing chamber; m is the mass flow in kg / s; C is the specific heat capacity in J / (kg*K); and ΔT2 is the difference between the feed temperature and the desired temperature in K.

[0067] As a preferred embodiment, the input heat Q is obtained by pre-calculation, i.e. under ideal working conditions, the mass flow of the material (the mass of fluid passing through the effective cross section of the closed pipeline per unit of time) is an ideal preset value, the specific heat capacity C of the material is the specific heat capacity of the graphite particles, and the difference ΔT2 between the feed temperature and the desired temperature is a preset temperature difference, i.e. when the input heat Q is 1000 W, the convective heat transfer coefficient h in the pulverizing chamber is 50 W / (m2·K), T ∞ T is 20°C, ΔT1 is 30°C, R is 0.5 m, L is 1 m, i.e. θ = 1000 / (50*(30-20)*0.5*1) = 4 degrees.

[0068] In summary, the temperature adjusting device for pneumatic pulverization of lithium battery negative electrode materials does not use cold air flow to cool down to avoid additional air flow affecting the rotating air flow in the pulverizing chamber 4. When cooling is needed, the baffle 2 in the heat dissipation ring 1 is only rotated to increase the inner wall area of the heat dissipation ring 1 in contact with the material, improve the heat dissipation of the material, and reduce the temperature of the material entering the pulverizing chamber 4. At the same time, during the rotation of the baffle 2, the cross-sectional area of the material flow is not changed, ensuring the stability of the material flow rate.

[0069] In this document, when a first element is referred to as being "on" a second element, it can be directly on the second element or a third element can be interposed therebetween.

[0070] In this document, when an element or layer is referred to as being "on", "engaged to", "connected to", "attached to", or "coupled to" another element or layer, it can be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers can be present. In contrast, when an element is referred to as being "directly on", "directly engaged to", "directly connected to", "directly attached to", or "directly coupled to" another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., "between" versus "directly between", "adjacent" versus "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0071] In this document, example embodiments of the disclosure will be described in greater detail. As used herein, such as the expression "at least one of," when preceded by a list of two or more items, modifies the conjunctive list of items immediately following the expression to mean that at least one of the individual items in the list of items can be used, but that more than one of each individual item can be used. For example, the phrase "at least one of a, b, and c" should be construed to mean at least one of each of the items a, b, c alone or in any combination of two or more of the items a, b, c.

[0072] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and the like are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order of performance. Additional or alternative steps can be employed.

[0073] As used herein, the phrases "in an embodiment," "according to an embodiment," "in some embodiments," and the like, generally mean the particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of the present disclosure. Thus, appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. As used herein, the term "example" or "exemplary" means "serving as an example, instance, or illustration." Any implementation, aspect or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects or designs. Rather, the term "example" or "exemplary" is intended to present concepts in a concrete manner. As used herein, the term "include" and derivatives thereof mean "comprise" or "comprising," but also "including," "containing," "involving," and variations thereof, and therefore specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0074] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting" should be understood as broad, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0075] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are intended to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing 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. In addition, terms such as "first", "second" and other numerical terms are used herein and do not imply order or sequence unless expressly indicated herein. Therefore, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0076] Spatially relative terms, such as "inner", "outer", "below", "below", "lower", "above", "upper", and the like, can be used herein to facilitate the description of the relationship of one element or feature to another element or feature as illustrated in the drawings. In addition to the orientation depicted in the drawings, the spatially relative terms can be intended to encompass different orientations of the device in use or operation. For example, if the device in the drawings is turned over, the element described as "below" or "under" the other element or feature will be oriented "above" the other element or feature. Therefore, the example term "below" can encompass both the above and below orientations. The device can be oriented in other ways (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0077] In the above discussion, unless otherwise stated, the terms "about", "approximately", "substantially" and the like, when used in describing a numerical value, mean a variation of + / - 10% of the value.

[0078] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can certainly make various changes and modifications within the scope of not deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A temperature control device for pneumatic pulverization of lithium battery negative electrode materials, characterized in that, include: A heat dissipation ring (1) is provided inside which an even number of partitions (11) are provided to divide the channel into several sub-channels (12), and baffles (2) are provided on the spaced sub-channels (12) to block the corresponding sub-channels (12). The drive shaft (3) is located at the center of the heat dissipation ring (1) and is connected to each baffle (2); Temperature sensor, used to acquire and transmit temperature data inside the grinding chamber; as well as The control module is electrically connected to the drive shaft (3) and the temperature sensor; wherein The heat dissipation ring (1) is installed in the pneumatic conveying pipe (5) near the crushing chamber (4); The control module is configured to control the drive shaft (3) to drive each baffle (2) to rotate synchronously to the corresponding angle according to the temperature difference when the temperature data obtained by the temperature sensor exceeds the threshold, so as to increase the heat exchange area between the material and the inner wall of the heat dissipation ring (1), thereby reducing the output temperature of the material at the heat dissipation ring (1) by the corresponding temperature difference. The baffle (2) is fan-shaped to match the cross-section of the sub-channel (12); A driven plate (21) is provided on one straight side of the baffle (2), the driven plate (21) is inserted into the corresponding sub-channel (12) and is in close contact with the adjacent partition (11); wherein The control module is configured to control the drive shaft (3) to drive the baffle (2) to rotate so that the driven plate (21) rotates to a corresponding angle with the adjacent partition (11).

2. The temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 1, characterized in that, The driven plate (21) rotates to a corresponding angle with the adjacent partition plate (11) as follows: ； in, T ∞ This refers to the ambient temperature, expressed in degrees Celsius. Q Heat input is measured in watts. h The convective heat transfer coefficient within the pulverizing chamber; ΔT 1 represents the temperature difference between the grinding chamber and the preset temperature; L This refers to the length of the pipe, in meters. R The radius of the sector is in meters.

3. The temperature control device for pneumatic pulverization of lithium battery negative electrode materials as described in claim 2, characterized in that, A scraper (22) is provided on the other straight edge of the baffle (2). The scraper (22) is located in the adjacent sub-channel (12) and is in close contact with the adjacent partition (11). The control module is configured to control the drive shaft (3) to drive the baffle (2) to rotate, so that the scraper (22) cleans the inner wall of the adjacent sub-channel (12) to ensure the heat exchange efficiency of the heat dissipation ring (1).

4. The temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 3, characterized in that, An mounting sleeve (13) is provided at the axial center of the heat dissipation ring (1); wherein One end of each of the aforementioned partitions (11) is connected to the mounting cylinder (13), and the other end is connected to the inner wall of the heat dissipation ring (1); and The drive shaft (3) is disposed inside the mounting cylinder (13).

5. A method for operating the temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 1, characterized in that, include: The channel of the heat dissipation ring (1) is divided into several sub-channels (12) by an even number of partitions (11), and baffles (2) are set on the intersecting sub-channels (12) to block the corresponding sub-channels (12). Temperature data within the pulverizing chamber is acquired and transmitted via a temperature sensor; The required rotation angle of the baffle is determined based on the temperature data.

6. The operating method of the temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 5, characterized in that, Methods for calculating the required rotation angle of the baffle based on the acquired temperature data include: Obtain the temperature difference between the temperature inside the grinding chamber and the preset temperature; To obtain the increased heat exchange surface area of ​​the heat dissipation ring; Obtain the angle data required for the baffle to rotate to the corresponding angle.

7. The operating method of the temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 6, characterized in that, The difference between the temperature inside the grinding chamber and the preset temperature is obtained, i.e. ΔT 1= T - T 0; in, T The current temperature data inside the grinding chamber, obtained by the temperature sensor, is in degrees Celsius. T 0 represents the preset temperature data within the grinding chamber, in degrees Celsius.

8. The operating method of the temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 7, characterized in that, To obtain the increased heat exchange surface area of ​​the heat dissipation ring, i.e. S = L * R * θ ; in, L This refers to the length of the pipe, in meters. R The radius of the sector is in meters. θ It is the central angle of the sector.

9. The operating method of the temperature control device for pneumatic pulverization of lithium battery negative electrode material as described in claim 8, characterized in that, Obtain the angle data required for the baffle to rotate to the corresponding angle, i.e. ； in, T ∞ This refers to the ambient temperature, expressed in degrees Celsius. Q Heat input is measured in watts. h The coefficient of convective heat transfer within the pulverizing chamber is denoted as .

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