Battery pole piece coating thickness detection device

Abstract

The utility model relates to a battery pole piece coating thickness detection device, which comprises a bottom plate, and a laser thickness gauge and a bearing unit which are arranged on the bottom plate, the bearing unit comprises a carrying plate, a carrying support and a displacement assembly, the carrying support is movably arranged on the bottom plate through the displacement assembly, and the laser thickness gauge and the bearing unit are arranged on the bottom plate. The loading plate is fixed on the loading bracket in an overhanging manner, and a pole piece to be tested is placed on the loading plate; the laser thickness gauge comprises a laser device and a receiver, the loading plate is inserted between the laser device and the receiver, and a plurality of gaps are formed in the loading plate. According to the utility model, the continuous thickness measurement of various types of pole pieces in different directions or at different positions in the same direction can be realized, so that the thickness variation trend of the surface coating of the pole piece can be quickly obtained, the surface of the coating of the pole piece cannot be damaged, and the thickness measurement precision and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a battery electrode coating thickness testing device. Background Technology

[0002] In solid-state / semi-solid-state batteries, the thickness of the slurry coating directly affects battery performance and subsequent rolling processes. Therefore, precise measurement of the coating thickness of the battery electrodes is necessary. Currently, the main measurement methods include contact and non-contact thickness measurement. For contact thickness measurement, mechanical micrometers or probes are often used to directly measure the thickness of the electrode coating. However, this method can damage the coating surface and can only measure one location of the coating at a time, resulting in low measurement efficiency. For non-contact thickness measurement, acoustic and optical detection methods are often used. While this avoids surface damage, it can only measure one direction of the electrode coating, affecting measurement efficiency and accuracy. Utility Model Content

[0003] This invention provides a battery electrode coating thickness detection device to solve the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, this utility model provides a battery electrode coating thickness detection device, including a base plate and a laser thickness gauge and a support unit mounted on the base plate.

[0005] The bearing unit includes a load plate, a load support, and a displacement component. The load support is movably mounted on the base plate via the displacement component. The load plate is cantilevered and fixed on the load support. The electrode to be tested is placed on the load plate.

[0006] The laser thickness gauge includes a laser and a receiver, and the carrier plate is inserted between the laser and the receiver. The carrier plate has several slits.

[0007] Preferably, the laser thickness gauge is mounted on the base plate by a fixing unit, the fixing unit including a fixing block and a U-shaped fixing bracket, the fixing block being fixed to the base plate, the bottom of the U-shaped fixing bracket being mounted laterally on the fixing block, the two side walls of the U-shaped fixing bracket being located on the upper and lower sides respectively, and the laser and receiver being mounted in the two side walls respectively.

[0008] Preferably, the cargo support includes a plurality of diagonal bracing plates supported on the bottom of the cargo plate.

[0009] Preferably, the displacement assembly includes an X-axis linear guide rail, a first slider, a Y-axis linear guide rail, and a second slider. The X-axis linear guide rail is laid on the base plate, and the first slider is slidably mounted on the X-axis linear guide rail. The Y-axis linear guide rail is fixed to the first slider, and the second slider is slidably mounted on the Y-axis linear guide rail. The load support is mounted on the second slider.

[0010] Preferably, a height adjuster is also provided between the second slider and the load support.

[0011] Preferably, an encoder is installed on the support to convert the displacement of the support into an electrical signal.

[0012] Preferably, the carrier plate is made of stainless steel.

[0013] Preferably, the thickness of the carrier plate is 5 to 15 mm.

[0014] Preferably, the gaps are set at intervals of two or more.

[0015] Preferably, the width of the gap is greater than or equal to 4 mm, and the interval between two adjacent gaps is greater than or equal to 1 mm.

[0016] Compared with the prior art, the battery electrode coating thickness detection device provided by this utility model has the following advantages:

[0017] 1. This utility model can continuously measure the thickness of the electrode sheet placed on the carrier plate in different directions or at different positions in the same direction, so as to quickly obtain the trend of coating thickness change on the electrode sheet surface, without damaging the electrode sheet coating surface, thus improving the accuracy and efficiency of thickness measurement.

[0018] 2. This utility model can be used for various types of electrode materials, and the thickness measurement process is highly automated, further improving the thickness measurement efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the battery electrode coating thickness detection device in a specific embodiment of the present invention;

[0020] Figure 2 This is a side view of a battery electrode coating thickness detection device according to a specific embodiment of the present invention.

[0021] In the diagram: 100-base plate, 200-laser thickness gauge, 210-laser, 220-receiver, 230-fixed unit, 231-fixed block, 232-U-shaped fixed bracket, 300-bearing unit, 310-carrying plate, 311-gap, 320-carrying bracket, 321-diagonal brace, 322-encoder, 330-displacement component, 331-X-direction linear guide, 332-first slider, 333-Y-direction linear guide, 334-second slider, 335-height adjuster. Detailed Implementation

[0022] To illustrate the technical solution of the above utility model in more detail, specific embodiments are listed below to demonstrate the technical effects; it should be emphasized that these embodiments are used to illustrate the present utility model and not to limit the scope of the present utility model.

[0023] The battery electrode coating thickness detection device provided by this utility model, such as Figure 1 and Figure 2 As shown, it includes a base plate 100, a laser thickness gauge 200 mounted on the base plate 100, and a support unit 300, wherein:

[0024] The bearing unit 300 includes a load plate 310, a load support 320, and a displacement component 330. The load support 320 is movably mounted on the base plate 100 through the displacement component 330. The load plate 310 is cantilevered and fixed on the load support 320. The electrode to be tested (not shown) is placed on the load plate 310.

[0025] The laser thickness gauge 200 includes a laser 210 and a receiver 220, with a carrier plate 310 inserted between the laser 210 and the receiver 220. The carrier plate 310 has several slits 311. This invention allows adjustment of the position of the carrier plate 310 via a displacement component 330, enabling continuous thickness measurement of the electrode sheet placed on the carrier plate 310 in different directions or at different positions within the same direction. This quickly obtains the trend of coating thickness variation on the electrode sheet surface without damaging the coating surface, improving the accuracy and efficiency of the thickness measurement. Furthermore, this invention can be used for various types of electrode materials, with a high degree of automation in the thickness measurement process, further improving measurement efficiency.

[0026] In some embodiments, please refer to Figure 1 and Figure 2The laser thickness gauge 200 is mounted on the base plate 100 via a fixing unit 230. The fixing unit 230 includes a fixing block 231 and a U-shaped fixing bracket 232. The fixing block 231 is fixed to the base plate 100, and the bottom of the U-shaped fixing bracket 232 is mounted on the fixing block 231. The two side walls of the U-shaped fixing bracket 232 are located on the upper and lower sides respectively. The laser 210 and the receiver 220 are respectively installed in the two side walls. Of course, the positions of the laser 210 and the receiver 220 can be interchanged to complete the thickness measurement of the electrode on the carrier plate 310.

[0027] In some embodiments, please refer to Figure 1 and Figure 2 The load-bearing bracket 320 includes multiple inclined support plates 321 supported on the bottom of the load plate 310, such as at least three inclined support plates extending towards the bottom of the U-shaped fixed bracket 232 and the left and right sides, to improve the load-bearing capacity of the load-bearing bracket 320 and ensure the stability of the electrode to be tested.

[0028] In some embodiments, please refer to Figure 1 and Figure 2 The displacement component 330 includes an X-axis linear guide rail 331, a first slider 332, a Y-axis linear guide rail 333, and a second slider 334. The X-axis linear guide rail 331 is laid on the base plate 100, and the first slider 332 is slidably mounted on the X-axis linear guide rail 331. The Y-axis linear guide rail 333 is fixed on the first slider 332, and the second slider 334 is slidably mounted on the Y-axis linear guide rail 333. The load support 320 is mounted on the second slider 334, thereby using the displacement component 330 to adjust the horizontal position of the load plate 321. In some embodiments, a height adjuster 335 may also be provided between the second slider 334 and the load support 320 to adjust the height of the load plate 310 when changing batches of electrode sheets.

[0029] In some embodiments, please refer to Figure 1 and Figure 2 The carrier 320 is equipped with an encoder 322, which can convert the displacement of the carrier 320 (i.e. the electrode to be tested) into an electrical signal to complete the positioning of the electrode to be tested, thereby making the measurement position of the electrode to be tested correspond one-to-one with the thickness information detected by the laser thickness gauge.

[0030] In some embodiments, the carrier plate 310 may be made of stainless steel (such as NAK80 steel); the thickness of the carrier plate 310 is 5 to 15 mm, thereby providing sufficient support for the electrode to be tested without deformation.

[0031] In some embodiments, the slits 311 are two or more spaced apart, for example, two to ten. In this embodiment, the width of the slits is 4 mm or more, for example, 8 mm, and the interval between two adjacent slits 311 is greater than or equal to 1 mm, for example, 15 to 20 mm. In this embodiment, it is 17 mm, which can meet the light transmission requirements of the laser thickness gauge 200 without affecting the load-bearing capacity of the carrier plate 310 on the electrode to be tested.

[0032] In summary, the battery electrode coating thickness detection device provided by this utility model includes a base plate 100 and a laser thickness gauge 200 and a support unit 300 mounted on the base plate 100. The support unit 300 includes a loading plate 310, a loading bracket 320, and a displacement component 330. The loading bracket 320 is movably mounted on the base plate 100 through the displacement component 330. The loading plate 310 is cantilevered and fixed on the loading bracket 320, and the electrode to be tested is placed on the loading plate 310. The laser thickness gauge 200 includes a laser 210 and a receiver 220. The loading plate 310 is inserted between the laser 210 and the receiver 220, and the loading plate 310 has several slits 311. This invention allows for adjustment of the position of the carrier plate 310 by adjusting the displacement component 330, enabling continuous thickness measurement of the electrode sheet placed on the carrier plate 310 at different positions or in different directions. This allows for rapid determination of the coating thickness variation trend on the electrode sheet surface without damaging the coating surface, thus improving the accuracy and efficiency of the thickness measurement. Furthermore, this invention can be used for various types of electrode sheet materials, and the thickness measurement process is highly automated, further improving the efficiency of the thickness measurement.

[0033] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Therefore, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model also intends to include these modifications and variations.

Claims

1. A battery electrode sheet coating thickness detection device, characterized by, The thickness gauge comprises a base plate, a laser thickness gauge and a carrying unit mounted on the base plate, The carrying unit comprises a carrying plate, a carrying support and a displacement assembly, the carrying support is movably mounted on the base plate through the displacement assembly, the carrying plate is cantilevered fixed on the carrying support, and the pole piece to be measured is placed on the carrying plate; The laser thickness gauge comprises a laser and a receiver, the carrying plate is inserted between the laser and the receiver, and a plurality of slits are arranged on the carrying plate.

2. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The laser thickness gauge is mounted on the base plate through a fixing unit, the fixing unit comprises a fixing block and a U-shaped fixing support, the fixing block is fixed on the base plate, the bottom of the U-shaped fixing support is laterally mounted on the fixing block, and the two side walls of the U-shaped fixing support are arranged on the upper and lower sides, respectively, and the laser and the receiver are mounted in the two side walls, respectively.

3. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The carrying support comprises a plurality of inclined support plates supported on the bottom of the carrying plate.

4. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The displacement assembly comprises an X-direction linear guide rail, a first sliding block, a Y-direction linear guide rail and a second sliding block, the X-direction linear guide rail is laid on the base plate, the first sliding block is slidingly mounted on the X-direction linear guide rail, the Y-direction linear guide rail is fixed on the first sliding block, the second sliding block is slidingly mounted on the Y-direction linear guide rail, and the carrying support is mounted on the second sliding block.

5. The battery pole piece coating thickness detection apparatus of claim 4, wherein, A height adjuster is further arranged between the second sliding block and the carrying support.

6. The battery pole piece coating thickness detection apparatus of claim 1, wherein, An encoder is mounted on the carrying support to convert the displacement of the carrying support into an electrical signal.

7. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The carrying plate is made of stainless steel.

8. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The thickness of the carrying plate is 5-15 mm.

9. The battery pole piece coating thickness detection apparatus of claim 1, wherein, The slits are arranged at intervals and are greater than or equal to 2.

10. The battery pole piece coating thickness detection apparatus of claim 9, wherein, The width of the slit is greater than or equal to 4 mm, and the interval between the adjacent two slits is greater than or equal to 1 mm.

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