Temperature adjusting device for pneumatic crushing of lithium battery negative electrode material and working method of temperature adjusting device

Abstract

The invention belongs to the technical field of temperature regulation and control, and particularly relates to a temperature adjusting device for pneumatic crushing of a lithium battery negative electrode material and a working method thereof.The temperature adjusting device for pneumatic crushing of the lithium battery negative electrode material comprises a heat dissipation ring, a temperature adjusting device and a temperature adjusting device, baffles are arranged on the spaced sub-channels to block the corresponding sub-channels; the control module is configured to control the driving shaft to drive the baffles to synchronously rotate to the corresponding angles 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 materials and the inner wall of the heat dissipation ring, so that the output temperature of the materials at the heat dissipation ring is reduced by the corresponding temperature difference, and the heat dissipation efficiency is improved. According to the temperature adjusting device for pneumatic crushing of the lithium battery negative electrode material, when cooling is needed, only the baffle in the heat dissipation ring needs to be rotated to increase the area of the inner wall, making contact with the material, of the heat dissipation ring, heat dissipation of the material is improved, and the temperature of the material entering the crushing cavity is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature control, and in particular relates to a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries and a working method thereof. Background Art

[0002] The negative electrode material of the lithium battery is pneumatically transported into the crushing chamber, and then driven to rotate by the airflow generated by the nozzle in the crushing chamber, causing the negative electrode materials of the lithium battery to collide with each other and break. The broken negative electrode materials of the lithium battery are then sucked away.

[0003] When the negative electrode material is crushed in the crushing chamber, the temperature of the crushing chamber will rise. When the temperature exceeds the preset value, the negative electrode material will be thermally decomposed. In the related art, in order to prevent the temperature in the crushing chamber from exceeding the threshold, a cold air flow pipe is connected to the pipe entering the crushing chamber to allow the cold air flow to enter the crushing chamber for cooling. However, this method can easily affect the airflow in the crushing chamber, thereby affecting the crushing effect.

[0004] Therefore, how to control the temperature in the pulverizing chamber without introducing a cold air flow is a technical problem that needs to be solved urgently by those skilled in the art.

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

[0006] The embodiments of the present disclosure at least provide a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries, comprising: a heat dissipation ring, in which an even number of partitions are arranged to divide a channel into a plurality of sub-channels, and baffles are arranged on the spaced sub-channels to block the corresponding sub-channels; a drive shaft, located at the axis of the heat dissipation ring and connected to each baffle; a temperature sensor, for acquiring and sending temperature data in a crushing chamber; and a control module, electrically connected to 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 according to the temperature difference when the temperature data acquired by the temperature sensor exceeds a threshold value, so as to increase the heat exchange area between the material and the inner wall of the heat dissipation ring, thereby reducing the output temperature of the material at the heat dissipation ring by a corresponding temperature difference.

[0008] In an optional embodiment, the baffle is shaped like a sector that matches the cross-section of the sub-channel; a driven plate is provided on a straight side of the baffle, and the driven plate is inserted into the corresponding sub-channel and is close to the adjacent partition; wherein the control module is configured to control the drive shaft to drive the baffle to rotate, so that the driven plate rotates to a corresponding angle with the adjacent partition.

[0009] In an optional embodiment, the driven plate rotates to form a corresponding angle with the adjacent partition plate:

[0010]

[0011] Among them, T ∞ is the ambient temperature in degrees Celsius; Q is the input heat in watts; h is the convection 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 pipeline length in meters; R is the radius of the sector in meters.

[0012] In an optional embodiment, a scraper is provided on the other straight side of the baffle, and the scraper is located in an adjacent sub-channel and is close to a nearby partition; wherein the control module is configured to control the drive shaft to drive the baffle to rotate so that the scraper cleans the inner wall of the adjacent sub-channel to ensure the heat exchange efficiency of the heat dissipation ring.

[0013] In an optional embodiment, a mounting tube is provided at the axis of the heat dissipation ring; wherein one end of each of the partitions is connected to the mounting tube, and the other end is connected to the inner wall of the heat dissipation ring; and the drive shaft is arranged in the mounting tube.

[0014] In a second aspect, an embodiment of the present disclosure also provides a working method of a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries, which includes: dividing the channel of the heat dissipation ring into a plurality of sub-channels by an even number of partitions, and setting baffles on the spaced sub-channels to block the corresponding sub-channels; acquiring and sending the temperature data in the crushing chamber by a temperature sensor; and acquiring the required rotation angle of the baffle according to the temperature data.

[0015] In an optional embodiment, the method for calculating the angle at which the baffle plate needs to rotate according to the acquired temperature data includes: acquiring the difference between the temperature in the crushing chamber and the preset temperature; acquiring the heat exchange surface area increased by the heat dissipation ring; and acquiring the angle data at which the baffle plate needs to rotate to the corresponding angle.

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

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

[0018] In an optional implementation, the angle data required for the baffle to rotate to a corresponding angle is obtained, that is,

[0019]

[0020] Among them, T ∞ is the ambient temperature in degrees Celsius; Q is the input heat in watts; h is the convection heat transfer coefficient in the grinding chamber.

[0021] The beneficial effect of the present invention is that the temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries does not adopt cold air flow for cooling in order to avoid the influence of additional air flow on the rotating air flow in the crushing chamber. When cooling is required, it is only necessary to rotate the baffle in the heat dissipation ring to increase the inner wall area of ​​the heat dissipation ring in contact with the material, thereby improving the heat dissipation of the material to reduce the temperature of the material entering the crushing chamber. At the same time, during the rotation of the baffle, the cross-sectional area of ​​the material flow will not be changed, thereby ensuring the stability of the material flow rate.

[0022] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a lithium battery negative electrode material pneumatic crushing device with a temperature regulating device provided in an embodiment of the present disclosure;

[0026] Figure 2 A schematic cross-sectional view of a temperature regulating device provided in an embodiment of the present disclosure;

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

[0028] Figure 4 A schematic diagram of an installation structure of a baffle provided in an embodiment of the present disclosure;

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

[0030] In the figure:

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

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

[0033] Drive shaft 3;

[0034] Crushing chamber 4;

[0035] Pneumatic conveying pipeline 5;

[0036] Silo 6. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The material in the silo 6 enters the crushing chamber 4 after being transported by the pneumatic conveying pipe 5, and is guided by the rotating airflow formed by the built-in air nozzle in the crushing chamber 4 and then collides and breaks. When the material is crushed to the corresponding particle size, it will be sucked away by the negative pressure; when the material enters the crushing chamber 4 for crushing, it will gradually heat up. When the temperature rises to exceed the threshold, the high temperature will thermally decompose the negative electrode material of the lithium battery.

[0039] In the related art, in order to avoid thermal decomposition of materials due to the high temperature of the pulverizing chamber 4 , a 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, an embodiment of the present disclosure provides a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries.

[0041] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be exaggerated or reduced in order to effectively describe the technical content.

[0042] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] like Figures 1 to 5 As shown, at least one embodiment provides a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries, which includes: a heat dissipation ring 1, in which an even number of partitions 11 are arranged to divide the channel into a plurality of sub-channels 12, and baffles 2 are arranged on the spaced sub-channels 12 to block the corresponding sub-channels 12; a drive shaft 3, located at the axis of the heat dissipation ring 1 and connected to each baffle 2; a temperature sensor, used to obtain and send temperature data in the crushing chamber 4; and a control module, which is electrically connected to 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 synchronously to a corresponding angle 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 between the material and the inner wall of the heat dissipation ring 1, so that the output temperature of the material at the heat dissipation ring 1 is reduced by a corresponding temperature difference.

[0044] Specifically, the heat dissipation ring 1 is arranged in the pneumatic conveying pipe 5 close to the crushing chamber 4. When the temperature of the crushing chamber 4 exceeds the threshold, the temperature of the material entering the crushing chamber 4 is reduced by adjusting the heat exchange area of ​​the inner wall of the heat dissipation ring 1, thereby reducing the temperature of the crushing chamber 4.

[0045] In this embodiment, cold air flow cooling is not used to avoid additional air flow affecting the rotating air flow in the crushing chamber 4. When cooling is required, it is only necessary to rotate the baffle 2 in the heat dissipation ring 1 to increase the inner wall area of ​​the heat dissipation ring 1 in contact with the material, thereby improving the heat dissipation of the material to reduce the temperature of the material entering the crushing chamber 4; at the same time, during the rotation of the baffle 2, the cross-sectional area of ​​the material flow will not change, thereby ensuring the stability of the material flow rate.

[0046] like Figure 2 , Figure 3 As shown, in some embodiments, the shape of the baffle 2 is a sector shape that matches the cross-section of the sub-channel 12; a driven plate 21 is provided on a straight side of the baffle 2, and the driven plate 21 is inserted into the corresponding sub-channel 12 and is close to 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 form a corresponding angle with the adjacent partition 11.

[0047] In one embodiment, the control module adopts PLC, and the heat dissipation ring 1 divides the channel of the heat dissipation ring 1 into six sub-channels 12 through six partitions 11, and baffles 2 are set on the spaced sub-channels 12 to block these sub-channels 12, that is, the heat dissipation ring 1 has only three sub-channels 12 for the passage of materials, and the heat exchange area is only the inner walls of these 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 baffle 2 rotates to a corresponding angle. At this time, the blocked sub-channel 12 opens a corresponding angle, and the sub-channel 12 that was originally fully opened is blocked at a corresponding angle, ensuring that the flow area of ​​the material does not change, thereby ensuring that the flow rate of the material does not change; at the same time, the sub-channel 12 that is blocked at a corresponding angle does not change the heat exchange area.

[0049] In some embodiments, the driven plate 21 rotates to form a corresponding angle with the adjacent partition plate 11:

[0050]

[0051] Among them, T ∞ is the ambient temperature in degrees Celsius; Q is the input heat in watts; h is the convection 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 pipeline length in meters; R is the radius of the sector in meters.

[0052] like Figure 4 As shown, in some embodiments, a scraper strip 22 is provided on the other straight side of the baffle 2, and the scraper strip 22 is located in an adjacent sub-channel 12 and is close to a nearby partition 11; wherein the control module is configured to control the drive shaft 3 to drive the baffle 2 to rotate, so that the scraper strip 22 cleans the inner wall of the adjacent sub-channel 12 to ensure the heat exchange efficiency of the heat dissipation ring 1.

[0053] In this embodiment, the material will contact the inner wall of the heat dissipation ring 1 when being transported in the heat dissipation ring 1. Long-term material transportation 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 a driven plate 21 and a scraper strip 22, which clean the inner wall of the heat dissipation ring 1 by following the rotation of the baffle 2, thereby ensuring the heat exchange efficiency of the heat dissipation ring 1.

[0054] like Figure 3 , Figure 4 As shown, in some embodiments, a mounting cylinder 13 is provided at the axis center of the heat dissipation ring 1; one end of each partition 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 arranged in the mounting cylinder 13.

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

[0056] At least one embodiment also provides a working method of a temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries, which includes: dividing the channel of the heat dissipation ring 1 into a plurality of sub-channels 12 by an even number of partitions 11, and setting baffles 2 on the spaced sub-channels 12 to block the corresponding sub-channels 12; obtaining and sending the temperature data in the crushing chamber 4 by a temperature sensor; and obtaining the required rotation angle of the baffle according to the temperature data.

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

[0058] In some embodiments, the method for calculating the angle at which the baffle needs to rotate based on the acquired temperature data includes: obtaining the difference between the temperature in the crushing chamber 4 and the preset temperature; obtaining the heat exchange surface area increased by the heat dissipation ring; and obtaining the angle data at which the baffle needs to rotate to the corresponding angle.

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

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

[0061] In some embodiments, the angle data required for the baffle to rotate to a corresponding angle is obtained, that is,

[0062] T 减 =T ∞ +Q / (h*S);

[0063] T 减 =ΔT1;

[0064] Q = m*C*ΔT2;

[0065]

[0066] Among them, T 减 T is the temperature that the heat sink can reduce based on the increased heat exchange surface area, in degrees Celsius; ∞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; m is the mass flow rate in kg / s; C is the specific heat capacity in J / (kg*K); ΔT2 is the difference between the feed temperature and the expected temperature in K.

[0067] As a preferred embodiment, the input heat Q is obtained by pre-calculation, that is, under ideal working conditions, the mass flow rate of the material (the mass of the fluid passing through the effective cross-section of the closed pipe per unit 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 expected temperature is the preset temperature difference, that is, when the input heat Q is 1000W, the convection heat transfer coefficient h in the pulverizing chamber is 50W / (m2·K), T ∞ is 20°C, ΔT1 is 30°C, R is 0.5m, L is 1m, that is, θ=1000 / (50*(30-20)*0.5*1)=4 degrees.

[0068] In summary, the temperature regulating device for pneumatic crushing of negative electrode materials of lithium batteries does not use cold air flow for cooling in order to avoid additional air flow affecting the rotating air flow in the crushing chamber 4. When cooling is required, it is only necessary to rotate the baffle 2 in the heat dissipation ring 1 to increase the inner wall area of ​​the heat dissipation ring 1 in contact with the material, thereby improving the heat dissipation of the material to reduce the temperature of the material entering the crushing chamber 4; at the same time, during the rotation of the baffle 2, the cross-sectional area of ​​the material flow will not be changed, thereby ensuring the stability of the material flow rate.

[0069] Herein, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or a third component may be interposed between the first component and the second component.

[0070] In this article, when an element or layer is referred to as being "located on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to another element or layer, or there may be intermediate elements or layers. 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 may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (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] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0072] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0073] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve 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 superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0074] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0076] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in 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," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0078] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A temperature regulating device for pneumatic pulverization of negative electrode materials for lithium batteries, characterized in that: include: A heat dissipation ring (1) is provided with an even number of partitions (11) therein to divide the channel into a plurality of sub-channels (12), and baffles (2) are provided on the separated sub-channels (12) to block the corresponding sub-channels (12); A driving shaft (3) is located at the axis of the heat dissipation ring (1) and is connected to each baffle (2); A temperature sensor, used to obtain temperature data in the crushing chamber and send it; as well as The control module is electrically connected to 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 synchronously to a corresponding angle 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 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 a corresponding temperature difference.

2. The temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 1, characterized in that: The baffle (2) is in a fan-shaped shape that matches the cross section of the sub-channel (12); A driven plate (21) is provided on a straight side of the baffle (2), and the driven plate (21) is inserted into the corresponding sub-channel (12) and is closely attached to 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 driven plate (21) rotates to form a corresponding angle with the adjacent partition plate (11).

3. The temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 2, characterized in that: The driven plate (21) rotates to form a corresponding angle with the adjacent partition plate (11): Among them, T ∞ is the ambient temperature in degrees Celsius; Q is the input heat in watts; h is the convection 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 pipeline length in meters; R is the radius of the sector in meters.

4. The temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 3, characterized in that: The other straight side of the baffle (2) is provided with a scraper (22), and the scraper (22) is located in an adjacent sub-channel (12) and is closely attached to a nearby partition (11); wherein 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).

5. The temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 4, characterized in that: A mounting cylinder (13) is provided at the axis center of the heat dissipation ring (1); wherein One end of each of the partitions (11) is connected to the mounting tube (13), and the other end is connected to the inner wall of the heat dissipation ring (1); and The drive shaft (3) is arranged in the mounting cylinder (13).

6. A method for operating a temperature regulating device for pneumatic pulverization of negative electrode materials for lithium batteries, characterized in that: include: The channel of the heat dissipation ring (1) is divided into a plurality of sub-channels (12) by an even number of partitions (11), and baffles (2) are arranged on the separated sub-channels (12) to block the corresponding sub-channels (12); The temperature data in the crushing chamber is obtained by a temperature sensor and sent; The required rotation angle of the baffle is obtained according to the temperature data.

7. The operating method of the temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 6, characterized in that: The method for calculating the angle at which the baffle needs to rotate according to the acquired temperature data comprises: Obtaining the difference between the temperature in the crushing chamber and the preset temperature; Obtain the increased heat exchange surface area of ​​the heat dissipation ring; Obtain the angle data that the baffle needs to rotate to the corresponding angle.

8. The operating method of the temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 7, characterized in that: Obtain the difference between the temperature in the crushing chamber and the preset temperature, that is, ΔT1=T-T0; Among them, T is the current temperature data in the crushing chamber obtained by the temperature sensor, in degrees Celsius; T0 is the preset temperature data in the crushing chamber, in degrees Celsius.

9. The operating method of the temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 8, characterized in that: Obtain the increased heat exchange surface area of ​​the heat dissipation ring, that is, S = L*R*θ; Wherein, L is the length of the pipeline, in meters; R is the radius of the sector, in meters; θ is the central angle of the sector.

10. The operating method of the temperature regulating device for pneumatic pulverization of lithium battery negative electrode materials according to claim 9, characterized in that: Get the angle data that the baffle needs to rotate to the corresponding angle, that is, Among them, T ∞ is the ambient temperature in degrees Celsius; Q is the input heat in watts; h is the convection heat transfer coefficient in the grinding chamber.

Images