Device for improving density detection accuracy of coating surface

Abstract

According to the technical scheme, the device is characterized by comprising a top plate and a box body arranged on the bottom side of the top plate, the cross section of the box body is triangular, connecting holes allowing long-strip-shaped objects to be inserted are symmetrically formed in the top plate in a penetrating mode, and an air inlet hole is connected to the box body in a penetrating mode; an air blowing opening communicated with the air inlet hole is formed in the side, away from the top plate, of the box body in the length direction, a filter screen is detachably connected to the position, close to an inlet, in the air inlet hole, the long-strip-shaped object is specifically a steel rod, the diameter of the steel rod ranges from 2 cm to 2.5 cm, and the length of the steel rod is larger than 60 cm; the device has the technical effects that the temperature of the pole piece discharged from the coating oven can be reduced as soon as possible, so that the measurement precision and the measurement result of the thickness gauge are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a device for improving the detection accuracy of coating surface density. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. In 1912, lithium metal batteries were first proposed and studied by Gilbert N. Lewis. In the 1970s, MS Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] In the actual production process of lithium-ion batteries, there are extremely high requirements for the moisture content of the electrode, so a baking step is required. However, the temperature of the electrode after baking is too high, which will affect the accuracy of the thickness measurement result of the electrode by the thickness gauge. Therefore, a step is needed to cool the electrode. Utility Model Content

[0004] The utility model aims to provide a device for improving the detection accuracy of coating surface density, and has the advantages of ensuring that the temperature of the electrode can be reduced as soon as possible after it comes out of the coating oven, so as not to affect the measurement accuracy and measurement results of the thickness gauge.

[0005] The above technical purpose of the utility model is achieved through the following technical scheme: a device for improving the accuracy of coating surface density detection, comprising a top plate and a box body arranged on the bottom side of the top plate, the cross-section of the box body is triangular, the top plate is symmetrically penetrated with connecting holes for inserting long objects, the box body is penetrated with an air inlet, and the side of the box body away from the top plate is provided with an air outlet connected to the air inlet along the length direction.

[0006] The utility model is further configured as follows: a filter screen is detachably connected to the air inlet near the entrance.

[0007] The utility model is further configured as follows: the blowing port is a circular groove structure, the width of the blowing port is 2.8-3.2 cm, and the length of the blowing port is greater than 45 cm.

[0008] The utility model is further configured as follows: the diameter of the air inlet hole is 11-12CM.

[0009] The utility model is further configured as follows: the distance between the top plate and the air outlet is greater than 14 cm.

[0010] The utility model is further configured as follows: the long strip object is specifically a steel rod, and the diameter of the steel rod is 2-2.5 cm, and the length is greater than 60 cm.

[0011] In summary, the device for improving the accuracy of coating surface density detection proposed by the utility model ensures that the temperature of the electrode can be reduced as soon as possible after it comes out of the coating oven, so as not to affect the measurement accuracy and measurement results of the thickness gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0013] Figure 2 It is a top view of this embodiment.

[0014] Figure numerals: 1. top plate; 2. box body; 3. air inlet; 4. connecting hole; 5. air outlet. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0016] Example: Refer to Figure 1-2 As shown, a device for improving the detection accuracy of coating surface density comprises a top plate 1 and a box body 2 arranged on the bottom side of the top plate 1, the cross section of the box body 2 is triangular, the top plate 1 is symmetrically penetrated with connecting holes 4 for inserting long strip objects, the box body 2 is penetrated with an air inlet 3, the box body 2 is provided with a blowing port 5 connected to the air inlet 3 along the length direction on the side away from the top plate 1, the blowing port 5 is a circular groove structure, and the width of the blowing port 5 is 2.8-3.2cm, the length of the blowing port 5 is greater than 45cm, the diameter of the air inlet 3 is 11-12cm, the spacing between the top plate 1 and the blowing port 5 is greater than 14cm, and the long strip object is specifically a steel rod, and the diameter of the steel rod is 2-2.5cm, and the length is greater than 60cm;

[0017] Specifically, two steel rods are inserted into the two connection holes 4 so that the top plate 1 is connected to the cooling device, and the device is placed more than 10 cm above the pole piece. When the pole piece passes through the coating oven, the utility model device starts to work, and the fan first extracts the ambient air (air with a temperature below 30°C). After passing through the air inlet 3, the ambient air is first filtered to remove some impurities and dust particles, and then flows into the box 2, and finally blows to the surface of the pole piece through the blowing port 5 to achieve the effect of cooling the pole piece. In order to ensure that both sides of the pole piece can be cooled quickly without affecting the measurement accuracy of the thickness gauge, two sets of the utility model devices are required to be set at the outlets of the two ovens to ensure the cooling effect.

[0018] Furthermore, a filter screen is detachably connected to the air inlet 3 near the entrance to prevent the fan from sending impurities into the box body 2, resulting in impurities attached to the surface of the pole piece.

[0019] Operation steps: insert two steel rods from the two connection holes 4 to connect the top plate 1 with the cooling device, and place the device more than 10 cm above the pole piece. When the pole piece passes through the coating oven, the utility model device starts to work. The fan first extracts the ambient air (air with a temperature below 30°C). After passing through the air inlet 3, the ambient air is first filtered by the filter to remove some impurities and dust particles, and then flows into the box 2, and finally blows to the surface of the pole piece through the air outlet 5 to achieve the effect of cooling the pole piece. In order to ensure that both sides of the pole piece can be cooled quickly without affecting the measurement accuracy of the thickness gauge, two sets of the utility model devices are required to be set at the outlets of the two sections of the oven to ensure the cooling effect, so as to prevent the fan from sending impurities into the box 2, resulting in impurities on the surface of the pole piece.

[0020] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A device for improving the accuracy of coating surface density detection, characterized in that: The invention comprises a top plate (1) and a box body (2) arranged on the bottom side of the top plate (1); the cross section of the box body (2) is triangular; the top plate (1) is symmetrically provided with connection holes (4) for inserting long strip-shaped objects; the box body (2) is connected to an air inlet hole (3); and a blower port (5) connected to the air inlet hole (3) is provided on a side of the box body (2) away from the top plate (1) along the length direction.

2. A device for improving the accuracy of coating surface density detection according to claim 1, characterized in that: A filter screen is detachably connected to the air inlet (3) near the inlet.

3. A device for improving the accuracy of coating surface density detection according to claim 1, characterized in that: The blowing port (5) is in a circular groove structure, and the width of the blowing port (5) is 2.8-3.2 cm, and the length of the blowing port (5) is greater than 45 cm.

4. A device for improving the accuracy of coating surface density detection according to claim 1, characterized in that: The diameter of the air inlet (3) is 11-12 cm.

5. The device for improving the detection accuracy of coating surface density according to claim 1, characterized in that: The distance between the top plate (1) and the air outlet (5) is greater than 14 cm.

6. A device for improving the accuracy of coating surface density detection according to claim 1, characterized in that: The long strip object is specifically a steel rod, and the diameter of the steel rod is 2-2.5 cm and the length is greater than 60 cm.

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