Sagger detection device

Abstract

The utility model belongs to the technical field of battery production equipment, and discloses a sagger detection device. The sagger detection device comprises a bearing mechanism and a detection mechanism, the bearing mechanism is used for bearing a sagger, and an opening of the sagger is placed upwards; the detection mechanism comprises a sealing plate, a vacuumizing assembly and a detector, the sealing plate is arranged right opposite to the opening of the sagger, and the sealing plate can move in the vertical direction, is close to the sagger and seals the opening of the sagger; the vacuumizing assembly penetrates through the sealing plate and is used for vacuumizing the saggar; the detector is arranged on the sealing plate and used for detecting the air pressure value and the material amount in the sagger. The sagger detection device can accurately detect whether the sagger is damaged or not and whether material residues exist in the sagger or not, the detection accuracy is higher, use is safer and more reliable, and the sagger detection device meets the detection requirement under the complex environment.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production equipment, in particular to a sagger detection device. Background Art

[0002] A graphite sagger is a device used to load and protect the negative electrode material of a battery. It is usually made of high-purity graphite material and has good properties such as high temperature resistance, oxidation resistance, and corrosion resistance, which can ensure the stability and quality of the negative electrode material during the high-temperature sintering process. In the battery manufacturing process, the negative electrode material needs to go through processing steps such as high-temperature sintering, so it is necessary to use a graphite sagger to protect the negative electrode material from environmental factors such as high temperature and oxygen. At the same time, the graphite sagger can also improve the energy density and cycle life of the battery and is one of the important components in the battery manufacturing process. Therefore, the detection of the graphite negative electrode material sagger is particularly important.

[0003] The existing graphite negative electrode material sagger breakage detection device only presses down on the four sides of the sagger opening by a pressing plate and then injects compressed air. By setting the positive pressure value of the pressure gauge, it is used to detect and judge the integrity of the sagger. If there are cracks and breakages in the sagger, dust will be generated during the gas injection process, which will affect the on-site environment. And this method has a high false alarm rate and cannot judge whether there is residual material in the sagger. If there is residual material in the sagger, it will cause the injection to overflow at the next injection station, resulting in the cover plate being difficult to cover tightly when covering the cover plate, the cover plate falling off after entering the furnace, and in addition, due to too much material after the furnace is out, the sagger is easily crushed during the crushing process when pressing down.

[0004] Therefore, there is an urgent need to provide a new type of sagger detection device to solve the above technical problems in the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sagger detection device that can accurately detect whether the sagger is damaged and whether there is material residue inside, with higher detection accuracy, and is safer and more reliable to use, meeting the detection requirements in complex environments.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The sagger detection device includes a carrying mechanism and a detection mechanism. The carrying mechanism is used to carry the sagger, and the sagger is placed with its opening facing upward; the detection mechanism includes a sealing plate, a vacuum pumping assembly, and a detector. The sealing plate can move vertically to approach the sagger and seal the opening of the sagger; the vacuum pumping assembly penetrates through the sealing plate and is used to pump the sagger to a vacuum; the detector is arranged on the sealing plate and is used to detect whether the air pressure value and the material level in the sagger reach the preset values.

[0008] Optionally, the above-mentioned carrier mechanism includes a transport roller path for transporting the above-mentioned sagger in the horizontal direction, and the above-mentioned sealing plate is arranged above the transport roller path.

[0009] Optionally, the above-mentioned carrier mechanism further includes a position sensor arranged on the above-mentioned transport roller path, and the position sensor is used to detect whether the transport roller path transports the above-mentioned sagger directly below the above-mentioned sealing plate.

[0010] Optionally, the above-mentioned position sensor includes a diffuse reflection photoelectric sensor, and the diffuse reflection photoelectric sensor is arranged relative to the outer circumferential wall of the above-mentioned sagger.

[0011] Optionally, the above-mentioned vacuum pumping assembly includes a negative pressure fan and a vacuum pumping pipeline. One end of the vacuum pumping pipeline is connected to the negative pressure fan, and the other end of the vacuum pumping pipeline penetrates through the above-mentioned sealing plate.

[0012] Optionally, the above-mentioned detector includes a pressure probe and a material level detection mechanism. The pressure probe is arranged on the above-mentioned sealing plate, and the material level detection mechanism is arranged on the lower wall surface of the above-mentioned sealing plate.

[0013] Optionally, multiple above-mentioned material level detection mechanisms are provided, and the multiple material level detection mechanisms are evenly distributed.

[0014] Optionally, the above-mentioned sagger is in the shape of a cuboid, and 4 above-mentioned material level detection mechanisms are provided. The 4 material level detection mechanisms are respectively arranged corresponding to the 4 corners of the opening of the above-mentioned sagger.

[0015] Optionally, the above-mentioned material level detection mechanism includes a capacitive induction probe and a detection rod. The detection rod is vertically arranged on the lower wall surface of the above-mentioned sealing plate, and the capacitive induction probe is arranged at the bottom end of the inner rod; the distance between the capacitive induction probe and the lower wall surface of the above-mentioned sealing plate is less than the distance between the sealing plate and the bottom of the above-mentioned sagger when the sealing plate seals the opening of the above-mentioned sagger.

[0016] Optionally, the above-mentioned detection rod is a hollow telescopic rod, including an inner cylinder and an outer cylinder sleeved together: the side walls of the inner cylinder and the outer cylinder are in clearance fit so that the hollow telescopic rod is in an extended state under natural conditions; or, there is a spring in the outer cylinder, and the spring acts on the inner cylinder so that the hollow telescopic rod is in an extended state under natural conditions. The above-mentioned material level detection probe is magnetically connected to the above-mentioned sealing plate.

[0017] Beneficial effects:

[0018] In the sagger detection device of the present utility model, the sagger is first placed on the loading mechanism with its opening facing upward, and is arranged opposite to the sealing plate of the detection mechanism. Subsequently, the sealing plate descends to seal the opening of the sagger. At this time, the vacuum pumping assembly on the sealing plate is activated to pump vacuum for the sagger. The detector detects whether the pressure inside the sagger meets the requirements, and can also detect whether the material level inside the sagger reaches the preset value. When the pressure inside the sagger does not meet the requirements, it can be determined that the sagger has cracks or damage and is judged as unqualified. Additionally, if it is detected that the stock of the material inside the sagger reaches the preset value, it can also be determined that the sagger is unqualified and needs to be processed. This sagger detection device can accurately detect whether the sagger is damaged and whether there is material residue inside, with higher detection accuracy and more safe and reliable to use, and is suitable for the detection requirements in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the sagger detection device provided by the specific embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the material level detection mechanism in an embodiment of the present utility model.

[0021] In the figure:

[0022] 10. Sagger; 110. Transport roller path; 120. In-place sensor; 210. Sealing plate; 220. Vacuum pumping assembly; 221. Negative pressure fan; 222. Vacuum pumping pipeline; 231. Pressure probe; 232. Material level detection mechanism; 233. Capacitive induction probe; 234. Detection rod; 2341. Inner cylinder; 2342. Outer cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings rather than all the structures.

[0024] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0026] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, 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. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] Please refer to Figure 1 , in this embodiment, the sagger detection device includes a carrying mechanism and a detection mechanism. The above-mentioned carrying mechanism is used to carry the sagger 10, and the opening of the above-mentioned sagger 10 is placed upward; the above-mentioned detection mechanism includes a sealing plate 210, a vacuum pumping assembly 220 and a detector. The above-mentioned sealing plate 210 is arranged opposite to the opening of the above-mentioned sagger 10. The above-mentioned sealing plate 210 can move in the vertical direction to approach the above-mentioned sagger 10 and seal the opening of the above-mentioned sagger 10; the above-mentioned vacuum pumping assembly 220 is arranged through the above-mentioned sealing plate 210 and is used to pump vacuum for the above-mentioned sagger 10; the above-mentioned detector is arranged on the above-mentioned sealing plate 210, and the above-mentioned detector is used to detect whether the air pressure value and the material level in the above-mentioned sagger 10 reach the preset values.

[0028] The sagger detection device in this embodiment first places the sagger 10 on the carrying mechanism with the opening upward and opposite to the sealing plate 210 of the detection mechanism. Subsequently, the sealing plate 210 descends to seal the opening of the sagger 10. At this time, the vacuum pumping assembly 220 on the sealing plate 210 is turned on to pump vacuum for the sagger 10. The detector detects whether the pressure in the sagger 10 meets the requirements and can also detect the amount of materials in the sagger 10; when the pressure in the sagger 10 does not meet the requirements, it can be judged that the sagger 10 has cracks or damages and is judged as unqualified. In addition, if it is detected that the stock of materials in the sagger 10 reaches the preset value, it can also be judged that the sagger 10 is unqualified and needs to be processed. The sagger detection device can accurately detect whether the sagger 10 is damaged and whether there is material residue inside, with higher detection accuracy, and is safer and more reliable to use, meeting the detection requirements in complex environments.

[0029] The sagger 10 in this embodiment is a graphite sagger for carrying the negative electrode material. By detecting whether the graphite sagger is damaged and whether there is residual material, the production quality of the negative electrode material can be improved, and in the subsequent crushing process, the graphite sagger can be prevented from being crushed, thereby extending the service life of the graphite sagger.

[0030] Specifically, the movement of the sealing plate 210 can be driven by a driving cylinder or a driving motor, so that the sealing plate approaches the sagger 10 and seals the opening of the sagger 10; alternatively, a hydraulic mechanism can also be used to enable the sealing plate 210 to seal the opening of the sagger 10 more firmly, which will not be elaborated here.

[0031] Optionally, the above-mentioned carrying mechanism includes a transport roller path 110, and the transport roller path 110 is used to transport the sagger 10 in the horizontal direction, and the sealing plate 210 is arranged above the transport roller path 110. The setting of the transport roller path 110 facilitates the transportation of the sagger 10, realizes the full automation of the transportation and detection of the sagger 10, and improves the detection efficiency.

[0032] In this embodiment, the above-mentioned carrying mechanism further includes a position sensor 120, and the position sensor 120 is arranged on the transport roller path 110. The position sensor 120 is used to detect whether the transport roller path 110 transports the sagger 10 to directly below the sealing plate 210. The position detector can accurately detect whether the sagger 10 moves to directly below the sealing plate 210. When the detection is in place, the sealing plate 210 descends to start the detection process. The operation is simple and convenient, and it is more reliable compared with the detection method of visually observing the sagger 10.

[0033] Furthermore, the above-mentioned position sensor 120 includes a diffuse reflection photoelectric sensor, and the diffuse reflection photoelectric sensor is arranged opposite to the circumferential outer wall of the sagger 10. Since the material of the sagger 10 is different, such as the graphite sagger used in this embodiment, its surface is relatively smooth. When the light source irradiates the outer wall of the sagger 10, part of the light is reflected by the outer wall of the sagger 10 to form diffuse reflection light. The receiver of the diffuse reflection photoelectric sensor receives this part of the diffuse reflection light. After amplification, filtering and judgment processing, it can accurately detect whether the sagger 10 is in place, and the detection method is more accurate.

[0034] In this embodiment, the sagger detection device further includes a PLC (Programmable Logic Controller) controller. The PLC controller is communicatively connected to the transport roller path 110, the in-place sensor 120, and the detection mechanism. When the in-place sensor 120 detects that the sagger 10 is in place, the transport roller path 110 stops running, and the detection mechanism starts running. If the detection mechanism detects that the sagger 10 has no faults, the transport roller path 110 continues to run, transports the sagger 10 away, and brings in the next sagger 10 to start subsequent detection. If the detection mechanism detects that the sagger 10 has a fault, the operation of the transport roller path 110 is stopped, an alarm is issued, and the fault information is recorded to remind the operator to remove the unqualified sagger 10. After processing, the detection of the next sagger 10 is carried out.

[0035] Please continue to refer to Figure 1 , the above-mentioned vacuum pumping assembly 220 includes a negative pressure fan 221 and a vacuum pumping pipeline 222. The negative pressure fan 221 is communicatively connected to the vacuum pumping pipeline 222, and the vacuum pumping pipeline 222 is hermetically penetrated through the sealing plate 210. In this embodiment, the power of the negative pressure fan 221 is 0.75 kW, which can pump the sagger 10 to a vacuum as much as possible, so that when detecting the vacuum degree, the detection accuracy is higher.

[0036] Optionally, the above-mentioned detector includes a pressure probe 231 and a material level detection mechanism 232. The pressure probe 231 is arranged on the sealing plate 210, and the material level detection mechanism 232 is arranged on the lower wall surface of the sealing plate 210.

[0037] In some embodiments, the detection range of the pressure probe 231 under standard atmospheric pressure can be -0.1 MPa to 1 MPa, with a wider detection range and more accurate detection. In some embodiments, the pressure probe 231 can use a vacuum gauge, such as a commercially available digital vacuum gauge that can measure online, or other types of vacuum gauges.

[0038] In some embodiments, the material level detection mechanism 232 may include a capacitive induction probe 233 and a detection rod 234. The detection rod 234 is vertically arranged on the lower wall surface of the sealing plate 210, and the capacitive induction probe 233 is arranged at the bottom end of the telescopic rod. The distance between the capacitive induction probe 233 and the lower wall surface of the sealing plate 210 is less than the distance between the sealing plate 210 and the bottom of the sagger 10 when the sealing plate 210 seals the opening of the sagger 10. The distance between the capacitive induction probe 233 and the lower wall surface of the sealing plate 210 is L1, and the distance between the sealing plate 210 and the bottom of the sagger 10 when the sealing plate 210 seals the opening of the sagger 10 is L2. The difference between the distances L1 and L2 is the preset value of the material level, and this distance difference can be set to 1 cm, 2 cm, 3 cm, 4 cm, 5 cm or other values as needed. When the material in the sagger 10 reaches the preset value (or above the preset value), the capacitive induction probe 233 will contact the material during the detection process, so that it can be known whether the material in the sagger reaches or exceeds the preset value, and then subsequent processing procedures can be carried out.

[0039] In some embodiments, the detection rod 234 may be a hollow telescopic rod, and the hollow telescopic rod may include a sleeved inner cylinder 2341 and an outer cylinder 2342: the side walls of the inner cylinder 2341 and the outer cylinder 2342 are in clearance fit so that the hollow telescopic rod is in an extended state in the natural state; or, there is a spring in the outer cylinder 2342, and the spring acts on the inner cylinder 2341 so that the hollow telescopic rod is in an extended state in the natural state. The function of the hollow telescopic rod is that when there is too much residual material in the sagger 10, after the capacitive induction probe 233 contacts the residual material in the sagger 10, it can avoid breaking the detection rod 234 or damaging the capacitive induction probe 233 by shrinking, thereby improving the reliability during use.

[0040] In some embodiments, the capacitive induction probe 233 may adopt a commercially available capacitive level sensor, which can trigger a signal when the material touches the probe and can accurately detect whether there is material residue in the sagger 10 below the sealing plate 210 and whether it reaches the preset position.

[0041] In this embodiment, a plurality of the material level detection mechanisms 232 are provided, and the plurality of material level detection mechanisms 232 are evenly distributed. The even distribution of the plurality of material level detection mechanisms 232 can achieve a comprehensive detection of the sagger 10, realize a dead - angle - free detection of the inside of the sagger 10, and avoid material residue.

[0042] Specifically, the above-mentioned sagger 10 is in the shape of a cuboid, and there are 4 material level detection mechanisms 232. The 4 material level detection mechanisms 232 are respectively distributed at the 4 diagonals of the above-mentioned sealing plate 210. That is to say, the material level detection mechanism 232 is arranged corresponding to the 4 corners of the opening of the sagger 10, and can accurately detect whether there is material residue at the dead corners and in the seams of the edges, and the detection is more comprehensive and reliable. Of course, the number and arrangement form of the material level detection mechanism 232 can be adaptively changed according to the shape and size of the sagger 10, which will not be elaborated in this embodiment.

[0043] In some embodiments, the above-mentioned material level detection mechanism 232 can be detachably connected to the above-mentioned sealing plate 210, and the position and height of the material level detection mechanism 232 are adjustable at the bottom wall position of the above-mentioned sealing plate 210. The material level detection mechanism 232 arranged in this way can be applied to saggers 10 with different height dimensions and external dimensions, and adjust the position and height of the material level detection mechanism 232 according to the size and depth of the sagger 10 to achieve comprehensive detection of the materials inside the sagger 10, with higher detection accuracy and a wider application range.

[0044] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the embodiments of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A sagger detection device, characterized in that: include: A carrying mechanism, the carrying mechanism is used to carry the sagger (10), the opening of the sagger (10) being placed upwards; A detection mechanism, the detection mechanism comprising a sealing plate (210), a vacuum pumping component (220) and a detector, the sealing plate (210) being able to move in a vertical direction to approach the sagger (10) and seal the opening of the sagger (10); the vacuum pumping component (220) being passed through the sealing plate (210) and used for vacuuming the sagger (10); the detector being arranged on the sealing plate (210), and being used for detecting whether the air pressure value and material level in the sagger (10) have reached preset values.

2. The sagger detection device according to claim 1, characterized in that: The carrying mechanism comprises a transport roller (110), wherein the transport roller (110) is used to transport the sagger (10) in a horizontal direction, and the sealing plate (210) is arranged above the transport roller (110).

3. The sagger detection device according to claim 2, characterized in that: The carrying mechanism further comprises an in-position sensor (120), wherein the in-position sensor (120) is arranged on the transport roller (110), and the in-position sensor (120) is used to detect whether the transport roller (110) transports the sagger (10) to the position directly below the sealing plate (210).

4. The sagger detection device according to claim 3, characterized in that: The in-position sensor (120) comprises a diffuse reflection photoelectric sensor, and the diffuse reflection photoelectric sensor is arranged relative to the circumferential outer wall of the sagger (10).

5. The sagger detection device according to claim 1, characterized in that: The vacuum pumping assembly (220) comprises a negative pressure fan (221) and a vacuum pumping pipe (222), one end of the vacuum pumping pipe (222) is connected to the negative pressure fan (221), and the other end of the vacuum pumping pipe (222) is passed through the sealing plate (210).

6. The sagger detection device according to claim 1, characterized in that: The detector comprises a pressure probe (231) and a material level detection mechanism (232); the pressure probe (231) is arranged on the sealing plate (210); and the material level detection mechanism (232) is arranged on the lower wall surface of the sealing plate (210).

7. The sagger detection device according to claim 6, characterized in that: The material level detection mechanisms (232) are provided in plurality, and the plurality of material level detection mechanisms (232) are evenly distributed.

8. The sagger detection device according to claim 7, characterized in that: The sagger (10) is in a rectangular parallelepiped shape, and four material level detection mechanisms (232) are provided. The four material level detection mechanisms (232) are respectively provided corresponding to the four corners of the opening of the sagger (10).

9. The sagger detection device according to claim 6, characterized in that: The material level detection mechanism (232) comprises a capacitive induction probe (233) and a detection rod (234), wherein the detection rod (234) is vertically arranged on the lower wall surface of the sealing plate (210), and the capacitive induction probe (233) is arranged at the bottom end of the detection rod (234); The distance between the capacitive induction probe (233) and the lower wall surface of the sealing plate (210) is smaller than the distance between the sealing plate (210) and the bottom of the sagger when the sealing plate (210) seals the opening of the sagger (10).

10. The sagger detection device according to claim 9, characterized in that: The detection rod (234) is a hollow telescopic rod, comprising an inner tube (2341) and an outer tube (2342) which are sleeved together: The side wall gaps of the inner cylinder (2341) and the outer cylinder (2342) are matched so that the hollow telescopic rod is in an extended state in a natural state; or, a spring is provided in the outer cylinder (2342), and the spring acts on the inner cylinder (2341), so that the hollow telescopic rod is in an extended state in a natural state.

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