CN219914027U - Temperature measuring device, graphitization furnace and battery production equipment - Google Patents

Abstract

The utility model relates to a temperature measuring device, a graphitizing furnace and battery production equipment, wherein the temperature measuring device comprises: the contact piece comprises a main body and a separation piece, wherein a temperature measuring channel is formed in the main body, the temperature measuring channel is provided with a closed end and an open end, the separation piece is arranged in the temperature measuring channel and separates to form at least two sub-channels, all the sub-channels are communicated at one side of the closed end, at least one of the sides of the open end is configured as a first inlet, and at least the other one is configured as a first outlet; the temperature measuring piece is provided with a first air inlet for ventilating the first inlet, and the temperature measuring piece is used for measuring the temperature of the closed end through the first inlet. When the temperature measurement is carried out, the contact piece stretches into the graphitization furnace, so that the closed end of the temperature measurement channel is in contact with materials, the first inlet is ventilated before the temperature measurement, dust in each sub-channel is carried out by gas, then the temperature of the closed end is measured by the temperature measurement piece, the influence of the dust in the temperature measurement channel on a temperature measurement result can be reduced, and the accuracy of the temperature measurement result is improved.

Description

Temperature measuring device, graphitization furnace and battery production equipment

Technical Field

The utility model relates to the technical field of temperature measuring devices, in particular to a temperature measuring device, a graphitization furnace and battery production equipment.

Background

When graphite materials are produced by a graphitization furnace, if the thermodynamically unstable carbonaceous materials are stably converted into graphite materials, the core temperature inside the furnace body of the graphitization furnace needs to be controlled within a relatively high temperature. The temperature on the shell of the graphitization furnace has a large difference from the core temperature inside the furnace body, and in order to improve the accuracy of temperature measurement, the graphitization furnace needs to be stretched into the furnace body of the graphitization furnace for measurement through a temperature measuring device.

However, because of the occurrence of reaction, a large amount of dust is easily generated in the furnace body of the graphitization furnace, and when the current temperature measuring device stretches into the furnace body for measurement, the current temperature measuring device is easily affected by the dust, so that the measurement result is inaccurate, and the measurement accuracy is lower.

Disclosure of Invention

Accordingly, it is necessary to provide a temperature measuring device, a graphitization furnace, and a battery production facility, in order to solve the problem that the conventional temperature measuring device has low accuracy in measuring the core temperature inside the furnace body of the graphitization furnace.

In a first aspect, the present utility model provides a temperature measuring device comprising:

the contact piece comprises a main body and at least one isolation piece, wherein a temperature measuring channel is formed in the main body, the temperature measuring channel is provided with a closed end and an open end which are oppositely arranged, each isolation piece is arranged in the temperature measuring channel and is isolated to form at least two sub-channels, all the sub-channels are mutually communicated at one side of the closed end, at least one of the sides of all the sub-channels at the open end is configured as a first inlet, and at least one other sub-channel is configured as a first outlet;

the temperature measuring piece is connected with the contact piece, a first air inlet communicated with the first inlet is formed in the temperature measuring piece, the first air inlet is used for introducing gas into the first inlet, and the temperature measuring piece is used for measuring the temperature of the closed end through a sub-channel where the first inlet is located.

Through the structure, before temperature measurement is carried out, the gas is introduced into the first inlet through the first air inlet, so that after the gas passes through the temperature measurement channel, impurities such as dust in the temperature measurement channel are taken out from the first outlet, the inside of the temperature measurement channel is kept clean, the probability that the dust in the temperature measurement channel affects the temperature measurement result is reduced, and the accuracy of temperature measurement is improved.

In some embodiments, the temperature measuring member includes an infrared thermometer and a first lens, the infrared thermometer and the sub-channel where the first inlet is located are coaxially disposed, and the first lens is disposed between the infrared thermometer and the first inlet.

The infrared thermometer emits temperature measuring infrared rays, and the temperature measuring infrared rays are focused to one end of the contact piece, which is contacted with the object to be measured, through the first lens, so that the actual temperature of the object to be measured can be measured more accurately, and the measurement accuracy is improved.

In some embodiments, the temperature measuring member further comprises a housing having a first interior cavity in which the infrared thermometer is disposed;

the shell is provided with a second inlet and a second outlet which are respectively communicated with the first inner cavity, and the second inlet, the first inner cavity and the second outlet jointly form a cooling channel through which cooling medium can circulate.

The infrared thermometer is arranged in the first inner cavity of the shell, and the infrared thermometer can be protected through the shell. In addition, let in coolant to the cooling channel that second entry, first inner chamber and second export jointly formed, can realize the cooling to infrared thermoscope for infrared thermoscope can last high-efficient temperature measurement.

In some embodiments, the housing further has a second lumen disposed independently of the first lumen, the first lens disposed in the second lumen;

the shell is also provided with a second air inlet and an air outlet which are communicated with the second inner cavity, the second air inlet is used for introducing gas into the second inner cavity and blowing the first lens, and the air outlet is used for discharging the gas in the second inner cavity.

Through the structure, the gas is introduced into the second air inlet, so that the first lens in the second inner cavity can be purged, the first lens is kept clean, light transmission and focusing can be better, and the temperature measurement precision is improved.

In some embodiments, the temperature measurement member further comprises a cooling jacket wrapped around the exterior of the infrared thermometer. The cooling jacket can cool down the infrared thermometer, so that the infrared thermometer can continuously and efficiently measure the temperature.

In some embodiments, the temperature measuring piece further comprises a connecting pipeline, one end of the connecting pipeline is coaxially communicated with the first inlet, and the other end of the connecting pipeline is provided with a second lens in a sealing manner, wherein the second lens is parallel to the first lens and is arranged at intervals;

wherein, the first air inlet is arranged on the connecting pipeline.

The connecting pipeline can realize the tight communication between the first inlet and the second inner cavity, and the first air inlet is formed in the connecting pipeline, so that the purpose of blowing air in the temperature measuring channel for cleaning can be smoothly realized.

In some embodiments, the connecting conduit is removably connected to the housing.

From this, can dismantle the connection between connecting tube and the casing, can realize the dismouting of casing and casing inner structure and change, the operation of being convenient for. In addition, the sealing member is provided between the connecting pipe and the housing, so that the connection tightness between the connecting pipe and the housing can be improved.

In some embodiments, the temperature measuring part further comprises a control valve arranged on the connecting pipeline, and the control valve is used for controlling the on-off of the connecting pipeline.

The on-off of the connecting pipeline is controlled through the control valve, and when the shell is removed from the connecting pipeline, the control valve can protect the internal environment of the temperature measuring channel from being influenced by outside air or impurities, so that the temperature measuring channel is cleaner.

In some embodiments, the temperature measuring device further includes a signal transmission module communicatively connected to the temperature measuring member, where the signal transmission module is configured to receive a temperature measurement result of the temperature measuring member and transmit the temperature measurement result to the external display device.

The signal transmission module can transmit and feed back the temperature measured by the temperature measuring piece to an external display device, so that an operator can observe and debug the temperature according to the measured temperature, and the actual temperature on the object to be measured is compounded with the operation requirement.

In some embodiments, the temperature measuring device further comprises a fixing bracket connected to the temperature measuring member, the fixing bracket being used for fixing the temperature measuring member to the external structure. The temperature measuring part is fixed through the fixed bracket, so that the temperature measuring part can measure the temperature more stably.

In some embodiments, the fixing support comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is connected with the temperature measuring piece, one end of the second connecting piece is rotatably connected with the first connecting piece, and the other end of the second connecting piece is used for being supported on an external structure.

Through setting up first connecting piece and the second connecting piece that rotate the connection, can support the temperature measurement piece more nimble on different outer structure according to the in-service use scene to improve the stability of temperature measurement piece.

In some embodiments, the temperature measuring device is used to measure the temperature inside the graphitization furnace, and the contact is configured as a graphite tube.

When the temperature measuring device is used for measuring the temperature in the graphitization furnace, the object to be measured is a carbonaceous material to be reacted or a graphite material formed by the reaction. Therefore, the contact piece is arranged to be a graphite tube, so that the probability of introducing other impurities can be reduced, and the influence on materials in the graphitization furnace in the temperature measurement process is reduced.

In a second aspect, the utility model provides a graphitizing furnace comprising a housing and a temperature measuring device as described above, wherein the housing forms a furnace body for reaction, and a part of the temperature measuring device extends into the furnace body and is used for measuring the temperature inside the furnace body.

In some embodiments, an opening communicated with the interior of the furnace body is formed in the shell, the contact piece in the temperature measuring device penetrates through the opening, and the peripheral outline of the contact piece is matched with the shape of the opening. The peripheral outline of the contact element is matched with the shape of the opening on the shell, so that the contact element and the shell are more compact, and the tightness of the whole structure is improved.

In a third aspect, the present utility model provides a battery production apparatus comprising a graphitization furnace as described above.

Above-mentioned temperature measuring device, graphitization stove and battery production facility, when carrying out the temperature measurement, can stretch into the furnace body inside of graphitization stove with the part of contact member, make the blind end of temperature measurement passageway be located the furnace body inside and with the material contact of the inside core temperature zone of furnace body, before the temperature measurement, at first through first air inlet to first entry gas-inlet, after each subchannel of gas-inlet, can follow first export discharge, simultaneously take dust or other impurity in each subchannel out together, then the temperature measurement piece is measured the temperature of blind end through the subchannel at first entry place, can reduce the influence of dust in the temperature measurement passageway to the temperature measurement result, improve the degree of accuracy of temperature measurement result.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a temperature measurement device according to one or more embodiments;

FIG. 2 is a schematic diagram of a structure of a contact in accordance with one or more embodiments;

FIG. 3 is a schematic diagram of a temperature sensing member according to one or more embodiments;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is a schematic diagram of a graphitization furnace according to one or more embodiments.

Reference numerals illustrate: 1000. a graphitizing furnace;

100. a temperature measuring device; 200. a housing; 201. a furnace body; 202. a material;

10. a contact; 20. a temperature measuring member; 30. a signal transmission module; 40. a fixed bracket;

11. a main body; 12. a spacer; 21. a first air inlet; 22. an infrared thermometer; 23. a first lens; 24. a housing; 25. a connecting pipe; 26. a second lens; 27. a control valve; 28. a cooling jacket; 41. a first connector; 42. a second connector;

111. a temperature measuring channel; 241. a first lumen; 242. a second inlet; 243. a second outlet; 244. a second lumen; 245. a second air inlet; 246. an air outlet;

1111. a closed end; 1112. an open end; 1113. a sub-channel; 1114. a first inlet; 1115. a first outlet.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The carbon atoms of the carbonaceous material are irregularly arranged, and only through high-temperature heat treatment, the carbon atoms are recrystallized and rearranged to form a crystal structure of graphite, so that the graphite has excellent performances such as electrical conductivity, thermal conductivity, chemical stability and thermal stability. Therefore, it is required to convert carbonaceous materials into artificial graphite materials through a graphitization furnace in order to apply the graphite materials to the production and preparation of battery anode materials.

In the reaction process, the core temperature in the graphitization furnace needs to be controlled within a higher temperature to enable the carbonaceous material to be stably converted into the graphite material. Therefore, it is necessary to measure the core temperature inside the graphitization furnace by means of a temperature measuring device in order to better control the temperature.

In order to improve the accuracy of temperature measurement, it is common to extend a temperature measuring device into the core temperature region inside the graphitization furnace. However, the core temperature zone is subject to a large amount of dust due to the reaction. When the temperature measurement is carried out, dust can influence the temperature measurement result. For example, the core temperature area is measured by the infrared thermometer, and the dust shields the infrared rays emitted by the infrared thermometer, so that the accuracy of the temperature measurement result is reduced.

Based on the above consideration, in order to improve accuracy of a temperature measurement result, one or more embodiments of the present utility model provide a temperature measurement device, when performing temperature measurement, a part of a contact member may extend into a furnace body of a graphitization furnace, so that a closed end of a temperature measurement channel is located inside the furnace body and contacts with a material in a core temperature region inside the furnace body.

The temperature measuring device disclosed in one or more embodiments of the present utility model may be used for measuring the temperature inside the graphitization furnace, but is not limited to the above-mentioned temperature measuring device, and other high temperature devices may also be used for measuring the temperature, which is not limited herein.

In one or more embodiments of the present utility model, a graphitization furnace including a temperature measuring device is provided, wherein the graphitization furnace refers to a device that performs high temperature sintering on a carbonaceous material to recrystallize and rearrange carbon atoms, thereby converting the carbonaceous material into an artificial graphite material.

In one or more embodiments of the present utility model, there is also provided a battery production apparatus including a graphitization furnace, by which a graphite material is produced, and the graphite material is applied to a negative electrode material of a battery, to finally form a complete battery structure.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a temperature measuring device 100, which includes a contact 10 and a temperature measuring member 20. The contact 10 includes a main body 11 and at least one spacer 12, wherein a temperature measuring channel 111 is formed in the main body 11, and the temperature measuring channel 111 has a closed end 1111 and an open end 1112 which are disposed opposite to each other. Each of the spacers 12 is disposed in the thermometric channel 111 and separates to form at least two sub-channels 1113, all of the sub-channels 1113 being in communication with each other on one side of the closed end 1111, at least one of the sub-channels 1113 being configured as a first inlet 1114 and at least one other being configured as a first outlet 1115 on one side of the open end 1112. The temperature measuring member 20 is connected with the contact member 10, and a first air inlet 21 communicated with the first inlet 1114 is formed in the temperature measuring member 20, the first air inlet 21 is used for introducing air into the first inlet 1114, and the temperature measuring member 20 is used for measuring the temperature of the closed end 1111 through a sub-channel 1113 where the first inlet 1114 is located.

The contact 10 is a component of the temperature measuring device 100 for directly contacting with the object to be measured to conduct the temperature on the object to be measured. The temperature measuring member 20 is a member capable of measuring an actual temperature on an object to be measured through the contact member 10.

The temperature measurement channel 111 is opened inside the main body 11, specifically, a closed end 1111 of the temperature measurement channel 111 is located inside the main body 11 and isolated from the outside. The open end 1112 of the thermometric channel 111 extends to the surface of the main body 11 and communicates with the outside. At least one spacer 12 is provided inside the thermometric channel 111 to isolate the thermometric channel 111 by each spacer 12 to form at least two sub-channels 1113. Wherein all of the sub-channels 1113 communicate with each other on one side of the closed end 1111. At least one sub-passageway 1113 is configured as a first inlet 1114 on one side of the open end 1112 and at least one other sub-passageway 1113 is configured as a first outlet 1115 on one side of the open end 1112.

As a specific example, a spacer 12 may be disposed inside the thermometric channel 111, and the spacer 12 separates the thermometric channel 111 to form two sub-channels 1113. Wherein two sub-passages 1113 communicate with each other on the side of the closed end 1111, and wherein one of the sub-passages 1113 is configured as a first inlet 1114 on the side of the open end 1112 and the other sub-passage 1113 is configured as a first outlet 1115 on the side of the open end 1112.

Thus, the two sub-channels 1113 together form a "U" shaped thermometric channel 111. In the temperature measurement process, the first air inlet 21 on the temperature measurement member 20 is communicated with the first inlet 1114, and air is introduced into the first inlet 1114, and is discharged from the first outlet 1115 after passing through the U-shaped temperature measurement channel 111. In this process, the gas can bring out impurities such as dust in the temperature measurement channel 111, thereby improving the cleanliness in the temperature measurement channel 111.

It can be understood that in the actual manufacturing process, the spacer 12 and the main body 11 are in an integral structure, i.e. the contact 10 is in a solid column structure, and the main body 11 is provided with the "U" shaped temperature measuring channel 111, so that the spacer 12 is formed between the two sub-channels 1113 of the "U" shaped temperature measuring channel 111. Of course, in practical application, the molding can be performed in other manners, specifically, the molding manner can be adjusted according to the actual requirement, which is not described herein.

Further, the gas introduced into the first inlet 1114 through the first gas inlet 21 may be an inert gas, such as nitrogen, so that the probability of reaction between the gas and the object to be measured can be reduced.

When the object to be measured is measured through the temperature measuring piece 20, the contact piece 10 can conduct heat on the object to be measured due to the fact that the contact piece 10 is in direct contact with the object to be measured. Therefore, the temperature measuring member 20 only needs to measure the temperature of the contact position of the contact member 10 and the object to be measured, and the actual temperature on the object to be measured can be obtained.

When the temperature measurement is performed, impurities such as dust in the external environment easily enter the temperature measurement channel 111 to form a certain shielding for the temperature measurement channel 111, so that the temperature measurement result of the temperature measurement piece 20 in the temperature measurement channel 111 can be affected.

Specifically, when the temperature measuring device 100 is applied to the temperature measurement of the graphitization furnace, the contact 10 extends into the furnace body of the graphitization furnace, and the contact 10 is brought into contact with the material inside the furnace body, so as to conduct heat on the material. However, with the reaction, a large amount of dust is in the graphitization furnace, and the dust enters the temperature measuring channel 111, so that the temperature measuring channel 111 is shielded, and the temperature measuring result of the temperature measuring piece 20 is affected.

Therefore, before temperature measurement, gas is first introduced into the first inlet 1114 through the first gas inlet 21 on the temperature measurement member 20, and then discharged from the first outlet 1115 after passing through the temperature measurement channel 111. At the same time, the gas brings out impurities such as dust in the temperature measuring channel 111 from the first outlet 1115, so that the interior of the temperature measuring channel 111 is kept clean.

Through the structure, before temperature measurement is carried out, gas is introduced into the first inlet 1114 through the first air inlet 21, so that after the gas passes through the temperature measurement channel 111, impurities such as dust in the temperature measurement channel 111 are taken out from the first outlet 1115, the inside of the temperature measurement channel 111 is kept clean, the probability that the dust in the temperature measurement channel 111 affects the temperature measurement result is reduced, and the accuracy of temperature measurement is improved.

Referring to fig. 1 and 3 together, in some embodiments, the temperature measuring device 20 includes an infrared thermometer 22 and a first lens 23, the infrared thermometer 22 is disposed coaxially with the sub-channel 1113 where the first inlet 1114 is located, and the first lens 23 is disposed between the infrared thermometer 22 and the first inlet 1114.

Specifically, when the temperature is measured by the temperature measuring member 20, the infrared thermometer 22 generates temperature measuring infrared rays toward the first inlet 1114, and the temperature measuring infrared rays pass through the sub-channel 1113 where the first inlet 1114 is located after focusing by the first lens 23 and are irradiated on the channel wall of the sub-channel 1113, so that the temperature of the irradiated position is measured.

At this time, the position irradiated by the temperature measuring infrared ray is the closed end 1111 of the temperature measuring channel 111, and on the contact 10, the side where the closed end 1111 is located contacts with the object to be measured, for example, contacts with the material in the graphitizing furnace. Therefore, the side of the closed end 1111 of the contact 10 conducts heat on the object to be measured, so that the temperature of the position irradiated by the temperature measuring infrared rays is equal to the actual temperature on the object to be measured. Thus, the temperature measuring member 20 measures the temperature of the position irradiated by the temperature measuring infrared ray, and the actual temperature of the object to be measured can be obtained.

The infrared thermometer 22 emits temperature measuring infrared rays, and the temperature measuring infrared rays are focused to one end of the contact element 10, which is contacted with the object to be measured, through the first lens 23, so that the actual temperature of the object to be measured can be measured more accurately, and the measurement accuracy is improved.

In some embodiments, the temperature measurement member 20 further includes a housing 24, the housing 24 having a first interior cavity 241, the infrared thermometer 22 being disposed in the first interior cavity 241. The casing 24 is provided with a second inlet 242 and a second outlet 243 which are respectively communicated with the first cavity 241, and the second inlet 242, the first cavity 241 and the second outlet 243 together form a cooling channel through which a cooling medium can circulate.

In one aspect, the housing 24 can protect the infrared thermometer 22. On the other hand, the second inlet 242, the first inner cavity 241 and the second outlet 243 on the housing 24 together form a cooling channel, and when the cooling medium circulates in the cooling channel, the cooling medium can cool the infrared thermometer 22 located in the first inner cavity 241, thereby realizing continuous and efficient temperature measurement of the infrared thermometer 22.

Specifically, in cooling the infrared thermometer 22, the cooling medium used may be an oxygen-free gas, such as an inert gas such as nitrogen. Nitrogen is introduced into the first interior chamber 241 from the second inlet 242 and then discharged from the second outlet 243. At the same time, the nitrogen takes away the heat generated by the infrared thermometer 22, thereby realizing the cooling of the infrared thermometer 22.

Of course, in some other embodiments, water cooling may be used to cool the first inner cavity 241 by adding water from the second inlet 242 and discharging water from the second outlet 243, which may also be achieved. However, the water cooling mode may have leakage problem, so that the internal refractory material and the material are easily oxidized, and the product quality is affected. Therefore, the cooling process is more reliable by adopting the air cooling mode.

The infrared thermometer 22 is arranged in the first inner cavity 241 of the shell 24, and the infrared thermometer 22 can be protected by the shell 24. In addition, cooling medium is introduced into the cooling channel formed by the second inlet 242, the first inner cavity 241 and the second outlet 243, so that the infrared thermometer 22 can be cooled down, and the infrared thermometer 22 can continuously and efficiently measure the temperature.

As shown in fig. 4, in some embodiments, the housing 24 further has a second cavity 244 disposed independently of the first cavity 241, and the first lens 23 is disposed in the second cavity 244. The casing 24 is further provided with a second air inlet 245 and an air outlet 246, which are communicated with the second inner cavity 244, the second air inlet 245 is used for introducing air into the second inner cavity 244, the air can purge the inside of the first lens 23, namely, one side of the first lens 23 facing the inside of the second inner cavity 244, and the air outlet 246 is used for discharging the air in the second inner cavity 244.

Specifically, the first lens 23 is configured to transmit and focus the infrared radiation emitted by the infrared thermometer 22, and impurities such as dust may adhere to the first lens 23, thereby affecting the light transmission and focusing effects. Therefore, the gas is introduced into the second air inlet 245, and the gas can sweep the first lens 23 toward one side of the second inner cavity 244 during the flowing process between the second air inlet 245 and the air outlet 246, so that the impurities such as dust adhered on the first lens 23 can be removed, and the light transmission and focusing effects of the first lens 23 are improved.

Optionally, the gas introduced into the second gas inlet 245 may be an oxygen-free gas, such as an inert gas, for example, nitrogen, so as to effectively reduce the probability of oxidizing the material in the graphitization furnace.

It can be appreciated that, in order to make the temperature measurement infrared rays emitted by the infrared thermometer 22 in the first inner cavity 241 smoothly pass through the focusing of the first lens 23 in the second inner cavity 244 and enter the temperature measurement channel 111, the first inner cavity 241 and the second inner cavity 244 can be isolated by a transparent plate, so that the temperature measurement infrared rays can smoothly pass through.

Through the structure, the gas is introduced into the second air inlet 245, so that the first lens 23 in the second inner cavity 244 can be purged, the first lens 23 is kept clean, light transmission and focusing can be better, and the temperature measurement precision is improved.

In some embodiments, the temperature measuring member 20 further includes a connecting tube 25, one end of the connecting tube 25 is coaxially connected to the first inlet 1114, and the other end of the connecting tube 25 is provided with a second lens 26 in a sealing manner, where the second lens 26 is parallel to and spaced apart from the first lens 23. The first air inlet 21 is formed on the connecting pipe 25.

The connecting pipe 25 is connected between the first inlet 1114 and the second inner cavity 244, wherein the second lens 26 disposed on the connecting pipe 25 can perform secondary focusing on the light transmitted from the first lens 23, so that the temperature measuring infrared ray can be more accurately irradiated on the end of the contact 10 contacting with the object to be measured.

In addition, when the deviation of the temperature measurement infrared ray occurs in the temperature measurement channel 111, the distance and the position relationship between the first lens 23 and the second lens 26 can be adjusted by adjusting the connecting pipeline 25 and the shell 24, so that the temperature measurement infrared ray passes through the temperature measurement channel 111 more smoothly under the focusing action of the first lens 23 and the second lens 26, and further irradiates on the channel wall of the temperature measurement channel 111 more accurately, and the temperature measurement result is more accurate.

Further, the first air inlet 21 is formed on the connecting pipe 25, and when air is blown into the sub-channel 1113 where the first inlet 1114 is located through the first air inlet 21, the air first passes through the connecting pipe 25, then enters the temperature measuring channel 111 from the first inlet 1114, and is discharged from the first outlet 1115. In this process, the gas can carry out the impurities in the connecting pipe 25 and the temperature measuring channel 111 together.

Therefore, the connection pipe 25 can make the temperature measuring infrared rays emitted by the infrared thermometer 22 smoothly enter the temperature measuring channel 111 through the first inlet 1114, and the first air inlet 21 is formed on the connection pipe 25, so that the purpose of blowing air in the temperature measuring channel 111 for cleaning can be smoothly achieved.

In some embodiments, the connecting conduit 25 is removably connected to the housing 24.

Specifically, the connecting pipe 25 is detachably connected with the housing 24, so that the housing 24 and the internal structure of the housing 24 can be conveniently disassembled, assembled and replaced, and the operation is convenient.

Further, a plurality of bolts may be provided between the housing 24 and the connection pipe 25 in the circumferential direction to achieve detachable connection between the housing 24 and the connection pipe 25. Accordingly, the infrared thermometer 22 or the first lens 23 in the housing 24 can be removed and replaced by removing the housing 24 from the connecting pipe 25. Of course, other connection manners, such as a snap connection manner, may be adopted for the housing 24 and the connection pipe 25, so that the connection between the housing 24 and the connection pipe 25 is realized, and details thereof will not be described herein.

In some embodiments, the temperature measuring member 20 further includes a control valve 27 disposed on the connecting pipe 25, where the control valve 27 is used to control the on/off of the connecting pipe 25.

Specifically, when the housing 24 is removed, the connection pipe 25 communicates with the external environment. Therefore, a control valve 27 is provided on the connection pipe 25, and when the housing 24 is connected to the connection pipe 25, the control valve 27 is opened and the connection pipe 25 communicates. When the housing 24 is removed from the connecting duct 25, the control valve 27 is closed and the connecting duct 25 is disconnected. Thereby being capable of avoiding that air enters the temperature measuring channel 111 from the connecting pipeline 25 and even enters the graphitization furnace to cause oxidation of materials in the furnace body.

Therefore, the control valve 27 controls the connection pipeline 25 to be opened and closed, and when the shell 24 is removed from the connection pipeline 25, the control valve 27 can protect the internal environment of the temperature measuring channel 111 from the influence of external air or impurities, so that the temperature measuring channel 111 is cleaner.

In addition, the control valve 27 may be configured as a pneumatic ball valve, but may also be configured as a gate valve or other valve body structure, which will not be described herein.

In some embodiments, the temperature sensing member 20 further includes a cooling jacket 28 that is wrapped around the exterior of the infrared thermometer 22. The cooling jacket 28 can cool down the infrared thermometer 22, so that the infrared thermometer 22 can continuously and efficiently measure the temperature.

Specifically, the cooling sleeve 28 may be a metal sleeve wrapped outside the infrared thermometer 22, and plays a role in cooling.

In some embodiments, the temperature measuring device 100 further includes a signal transmission module 30 communicatively connected to the temperature measuring member 20, where the signal transmission module 30 is configured to receive the temperature measurement result of the temperature measuring member 20 and transmit the temperature measurement result to an external display device.

When the temperature measuring piece 20 measures the actual core temperature inside the graphitization furnace, the temperature measuring piece 20 transmits the temperature measuring result to the signal transmission module 30, and the signal transmission module 30 transmits the temperature measuring result to an external display device so as to be convenient for an operator to observe, and correspondingly adjusts according to the temperature measuring result, so that the core temperature inside the graphitization furnace reaches the reaction requirement.

The signal transmission module 30 can transmit and feed back the temperature measured by the temperature measuring member 20 to an external display device, so that an operator can observe and debug the temperature according to the measured temperature, and the actual temperature on the object to be measured is compounded with the operation requirement.

As shown in fig. 1 and 3, in some embodiments, the temperature measuring device 100 further includes a fixing bracket 40 connected to the temperature measuring member 20, where the fixing bracket 40 is used to fix the temperature measuring member 20 to an external structure.

Along with the different environments of the temperature measuring device 100, the temperature measuring member 20 can be fixed by the fixing bracket 40, so that the temperature measuring member 20 can measure the temperature more stably.

Specifically, when the temperature measuring device 100 is applied to the graphitization furnace, the contact 10 is extended from the outer shell of the graphitization furnace into the inside of the furnace body. At this time, the temperature measuring part 20 is located outside the housing, and the temperature measuring part 20 may be fixed to the housing by the fixing bracket 40 or fixed to the ground so that the temperature measuring part 20 can be more stable.

In some embodiments, the fixing bracket 40 includes a first connecting member 41 and a second connecting member 42, the first connecting member 41 is connected with the temperature measuring member 20, one end of the second connecting member 42 is rotatably connected with the first connecting member 41, and the other end of the second connecting member 42 is used for being supported on an external structure.

Specifically, an arc groove is formed on the first connecting member 41, a bolt matched with the arc groove is convexly arranged on the second connecting member 42, the bolt is inserted into the arc groove and slides in the arc groove, and therefore the rotation connection between the first connecting member 41 and the second connecting member 42 is achieved.

Thus, the temperature measuring member 20 can be supported and fixed on different external structures by the first connecting member 41 and the second connecting member 42. For example, the temperature measuring member 20 may be supported and fixed on the outer shell of the graphitization furnace by rotating the second connecting member 42 such that the second connecting member 42 is disposed horizontally. The temperature measuring member 20 can also be supported and fixed on the ground by rotating the second connecting member 42 so that the second connecting member 42 is vertically arranged.

Through setting up first connecting piece 41 and the second connecting piece 42 of rotation connection, can support temperature measurement piece 20 more nimble on different outer structure according to the in-service use scene to improve temperature measurement piece 20's stability.

In some embodiments, the temperature measuring device 100 is used to measure the temperature inside the graphitization furnace, and the contact 10 is constructed as a graphite tube.

When the temperature measuring device 100 is used for measuring the temperature in the graphitization furnace, the object to be measured is the carbonaceous material to be reacted or the graphite material formed by the reaction. Therefore, the contact 10 is arranged as a graphite tube, so that the probability of introducing other impurities can be reduced, and the influence on materials in the graphitization furnace in the temperature measurement process is reduced.

Referring to fig. 5, based on the same concept as the above-mentioned temperature measuring device 100, the present utility model provides a graphitization furnace 1000, which includes a housing 200 and the above-mentioned temperature measuring device 100. Wherein, a furnace body 201 for reaction is formed inside the housing 200, and a part of the temperature measuring device 100 is extended into the furnace body 201 and used for measuring the temperature inside the furnace body 201.

Specifically, the part of the contact 10 in the temperature measuring device 100 extends into the furnace body 201, and the end of the contact 10 is in contact with the material 202, so that the temperature of the material 202 can be measured better.

In some embodiments, the casing 200 is provided with an opening communicating with the interior of the furnace 201, the contact 10 in the temperature measuring device 100 is penetrated through the opening, and the outline of the periphery of the contact 10 matches with the shape of the opening.

Specifically, when the opening formed in the housing 200 is rectangular in shape, the contact 10 is provided in a rectangular columnar structure, that is, a rectangular graphite tube. When the shape of the opening formed in the housing 200 is circular, the contact 10 is provided in a cylindrical structure, i.e., is provided as a cylindrical graphite tube.

The outer circumferential profile of the contact 10 is matched with the shape of the opening on the housing 200, so that the contact 10 and the housing 200 are more tightly connected, thereby improving the tightness of the overall structure.

Based on the same concept as the above-described graphitization furnace 1000, the present utility model provides a battery production apparatus including the above-described graphitization furnace 1000.

And preparing and forming a graphite material through a graphitization furnace, and applying the graphite material to a negative electrode of the battery to form a complete battery structure.

According to one or more embodiments, when the temperature of the material 202 inside the graphitization furnace 1000 is measured by the temperature measuring device 100, the graphite pipe is first extended into the furnace body 201 of the graphitization furnace 1000 from the opening of the housing 200, and the end of the graphite pipe is brought into contact with the material 202 inside the furnace body 201.

Before temperature measurement, firstly, air is blown into the temperature measurement channel 111 through the first air inlet 21, and after passing through the temperature measurement channel 111, the air is discharged from the first outlet 1115 and brings out impurities such as dust and the like in the temperature measurement channel 111, so that the interior of the temperature measurement channel 111 is kept clean.

The infrared thermometer 22 emits the temperature-measuring infrared rays toward the first inlet 1114, and the temperature-measuring infrared rays are irradiated onto the channel wall of the closed end 1111 of the sub-channel 1113 where the first inlet 1114 is located after focusing by the first lens 23. Because graphite pipe is the same with the material, and heat conduction efficiency is unanimous, therefore the temperature on the graphite pipe is unanimous with the temperature on the material. Therefore, the temperature of the material can be obtained through the irradiation of temperature measuring infrared rays.

Further, the infrared thermometer 22 transmits the temperature measurement result to the signal transmission module 30, and the signal transmission module 30 transmits the temperature measurement result to the external display device, so as to facilitate the observation of the operator.

When the temperature measurement result is lower than the target temperature, an operator can adjust the temperature in the furnace body to be higher. When the temperature measurement result is higher than the target temperature, the temperature in the furnace body is reduced by an operator until the temperature measurement result is consistent with the target temperature.

Therefore, the core temperature in the graphitization furnace can be accurately measured, and the temperature in the graphitization furnace can be flexibly adjusted according to the measurement result, so that the temperature reaches the target temperature, the reaction can be carried out at the target temperature, and the quality of the product is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (15)

1. A temperature measurement device, comprising:

the contact piece comprises a main body and at least one isolation piece, wherein a temperature measuring channel is formed in the main body, the temperature measuring channel is provided with a closed end and an open end which are oppositely arranged, each isolation piece is arranged in the temperature measuring channel and is isolated to form at least two sub-channels, all the sub-channels are positioned on one side of the closed end and are mutually communicated, at least one of the sub-channels positioned on one side of the open end is configured as a first inlet, and at least one other sub-channel is configured as a first outlet;

the temperature measuring piece is connected with the contact piece, a first air inlet communicated with the first inlet is formed in the temperature measuring piece, the first air inlet is used for introducing air into the first inlet, and the temperature measuring piece is used for measuring the temperature of the closed end through the sub-channel where the first inlet is located.

2. The temperature measurement device of claim 1, wherein the temperature measurement member comprises an infrared thermometer and a first lens, the infrared thermometer and the sub-channel in which the first inlet is located are coaxially arranged, and the first lens is arranged between the infrared thermometer and the first inlet.

3. The temperature measurement device of claim 2, wherein the temperature measurement member further comprises a housing having a first interior cavity, the infrared thermometer being disposed in the first interior cavity;

the shell is provided with a second inlet and a second outlet which are respectively communicated with the first inner cavity, and the second inlet, the first inner cavity and the second outlet jointly form a cooling channel through which cooling medium can circulate.

4. The device of claim 3, wherein the housing further has a second lumen disposed independently of the first lumen, the first lens disposed in the second lumen;

the shell is also provided with a second air inlet and an air outlet which are communicated with the second inner cavity, the second air inlet is used for introducing gas into the second inner cavity and purging the first lens, and the air outlet is used for discharging the gas in the second inner cavity.

5. The device of any one of claims 2-4, wherein the temperature measurement member further comprises a cooling jacket wrapped around the exterior of the infrared thermometer.

6. The temperature measurement device according to any one of claims 2 to 4, wherein the temperature measurement member further comprises a connecting pipe, one end of the connecting pipe is coaxially communicated with the first inlet, and a second lens is hermetically arranged at the other end of the connecting pipe and is parallel to and spaced apart from the first lens;

wherein, first air inlet is seted up on the connecting tube.

7. The temperature measurement device of claim 6, wherein the temperature measurement member further comprises a housing, the connecting conduit being detachably connected to the housing.

8. The temperature measurement device of claim 6, wherein the temperature measurement member further comprises a control valve disposed on the connection pipe, the control valve being configured to control on-off of the connection pipe.

9. The temperature measurement device of claim 1, further comprising a signal transmission module in communication with the temperature measurement member, the signal transmission module configured to receive the temperature measurement result of the temperature measurement member and transmit the temperature measurement result to an external display device.

10. The temperature measurement device of claim 1, further comprising a mounting bracket coupled to the temperature measurement member, the mounting bracket configured to secure the temperature measurement member to an external structure.

11. The temperature measurement device of claim 10, wherein the fixed bracket comprises a first connector and a second connector, the first connector is connected with the temperature measurement member, one end of the second connector is rotatably connected with the first connector, and the other end of the second connector is used for being supported on the external structure.

12. The temperature measuring device according to claim 1, wherein the temperature measuring device is used for measuring temperature inside a graphitization furnace, and the contact is configured as a graphite tube.

13. A graphitization furnace, comprising a housing and a temperature measuring device according to any one of claims 1 to 12, wherein a furnace body for reaction is formed inside the housing, and a part of the temperature measuring device extends into the furnace body and is used for measuring the temperature inside the furnace body.

14. The graphitizing furnace of claim 13, wherein the housing is provided with an opening communicating with the inside of the furnace body, the contact member in the temperature measuring device is inserted through the opening, and the outer peripheral contour of the contact member is matched with the shape of the opening.

15. A battery production apparatus comprising the graphitization furnace according to claim 13 or 14.