CN103776655B - The sample sampler of surface density measuring system - Google Patents

Abstract

The invention discloses a sample sampling device of a surface density measurement system, which includes a sampling frame and a sample fixture. The sampling frame includes a U-shaped main frame fixedly connected with an NDC scanner, and is horizontally and fixedly connected to the opening end of the U-shaped main frame. The sample support plate below, the center of the sample support plate is provided with a through hole matching the sample holder, and an inner flange is provided at the bottom of the through hole to support and position the sample holder; the sample holder includes a lower A ring body and an upper ring body, the upper and lower ring bodies clamp the sample therein and are fixedly connected by evenly distributed screws. The sample sampling device of the present invention can simulate qualified pole pieces by placing qualified pole pieces on the sampling rack, and then compare the produced pole pieces with qualified pole pieces (samples) to directly verify whether the produced pole pieces are qualified , avoiding the destructive measurement of the pole piece and avoiding the waste of qualified products.

Description

Sample sampling device for areal density measurement systems

technical field

The invention relates to the technical field of battery preparation, in particular to a sample sampling device of a surface density measurement system.

Background technique

Lithium-ion batteries are widely used in mobile communication devices and portable electronic devices, and the quality control of the core pole pieces is particularly important. In the preparation process of the pole piece, the coating amount (area density) of the coating process is an extremely important parameter of the pole piece. The NDC measurement system mainly includes an NDC scanner, which is a detection instrument for monitoring the surface density of the product. It passes The β-rays emitted by the upper probe pass through the product to be tested, and the lower probe receives the high-energy particles of the β-rays that pass through. The greater the quality of the product, the more particles are absorbed, and the smaller the electrical signal output of the detection device. After the linear conversion of the electrical signal output, the mass per unit area of the product is obtained, that is, the surface density.

However, the current NDC scanner is making product quality judgments to determine the correct parameters. In the past, the corresponding parameters of the qualified pole pieces were set to the correct parameters in a destructive way, which not only wastes qualified products, but also has certain limitations in parameter setting. deviation.

Contents of the invention

The object of the present invention is to provide a sample sampling device for an areal density measurement system aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of the present invention is:

A sample sampling device for an areal density measurement system, comprising a sampling rack and a sample holder, the sampling rack includes a U-shaped main frame fixedly connected to an NDC scanner, and a sample carrier fixedly connected horizontally to the open end of the U-shaped main frame plate, the center of the sample carrier plate is provided with a through hole matching the sample holder, and an inner flange is provided at the bottom of the through hole to support and position the sample holder; the sample holder includes a lower ring body and The upper ring body, the upper and lower ring bodies clamp the sample therein and are fixedly connected by evenly distributed screws.

A pressing ring is protrudingly formed inside the upper or lower annular body.

A level is fixedly arranged on the sample carrier.

The sample support plate is fixedly connected with the U-shaped main frame by four long bolts on both sides.

A semicircular notch is formed on one side of the sample support plate accommodation groove to facilitate finger access to the sample holder.

The sample carrier is made of aluminum alloy.

Compared with prior art, the beneficial effect of the present invention is:

The sample sampling device of the present invention has a simple and stable structure, improves the scanning accuracy, and can use different samples to detect different batches of products, and is easy to replace and adjust. Putting the qualified pole piece on the sampling rack can simulate the qualified pole piece, and then comparing the produced pole piece with the qualified pole piece (sample), can directly verify whether the produced pole piece is qualified, avoiding the Destructive measurement to avoid waste of qualified products.

Description of drawings

Fig. 1 shows the structural representation of sampling device of the present invention;

Fig. 2 shows the structural representation of the sample carrier plate of the present invention;

Fig. 3 shows the schematic diagram of the structure of the upper ring body of the present invention;

Fig. 4 is a schematic diagram of the structure of the lower torus of the present invention.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figures 1-4, the sample sampling device of the areal density measurement system of the present invention includes a sampling frame 1 fixedly connected with the NDC measurement system such as the NDC8000 scanner and a sample holder 2 for carrying samples, the The sampling rack includes a U-shaped main frame 11, and a sample support plate 12 fixedly connected horizontally to the open end of the U-shaped main frame. The center of the sample support plate is provided with a through hole 13 matching the sample holder. The bottom of the through hole is provided with an inner flange to support and position the sample fixture, that is, the sample fixture will be supported and positioned on the support edge at the bottom of the through hole. At the same time, a semicircular notch 15 is formed on one side of the accommodating groove of the sample support plate to facilitate finger access to the sample holder.

The U-shaped main frame 11 includes a beam and arms vertically formed at both ends of one side of the beam, and reinforcing ribs are provided between the lower part of the arms and the beam to increase the strength of the arms. Wherein, the middle part of the beam of the U-shaped main frame is fixedly connected with the body of the NDC8000, and the opening of the U-shaped main frame 11 can allow the probe of the NDC to enter and exit, wherein the sample support plate 12 is made of aluminum alloy material, It is light and not easily deformed, and it will not lose its level due to its own weight even if it is used for a long time. The sample carrier plate 12 is fixedly connected with the end of the support arm of the U-shaped main frame through four long bolts 13 on both sides, and each long bolt has two butterfly screws respectively located on the upper and lower sides of the platform. The screw plays a role in adjusting the level of the platform.

Further, in order to observe the horizontal state of the sample carrier, a level 14 is fixedly arranged on the sample carrier, specifically, a through hole is set on the sample carrier, and the level is embedded in the Insert it into the through hole and fix it with screws.

The sample holder includes a lower ring body 21 and an upper ring body 22, and a pressure ring 23 is protrudingly formed on the inner side of the lower ring body. The upper and lower ring bodies clamp the sample, and the sample can be clamped by means of the pressure ring. Tightly positioned in the sample holder, and then fixed with eight evenly distributed countersunk screws, it can ensure that the sample is in a tight state, which is beneficial to the measurement of the coating amount.

When testing, first remove the qualified pole piece, place the removed qualified pole piece in the middle of the upper and lower fixtures, fix it with countersunk screws to clamp and straighten the sample, and then place the prepared sample fixture on the sample holder. On the plate, adjust the height and level of the sample support plate. After adjustment, tighten the screws, and the sampling rack basically does not need to be moved. Set the sampling point on the NDC measurement system. The general position is in the sample center of the sampling rack. Click sampling, the NDC probe scans the product and the sample successively, and the coating amount of the product and the sample can be observed through the display screen of the NDC scanner (ie Area density) comparison results can directly determine whether the product is qualified or not.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the protection scope of the present invention.

Claims (6)

1. the sample sampler of a surface density measuring system, it is characterized in that, comprise sampling rack and sample clamp, described sampling rack comprises the U shape body frame being fixedly connected with NDC scanner, level is fixedly connected on the load plate of the sample below U shape body frame opening end, described sample load plate center arranges the through hole mated with described sample clamp, arranges interior flange with supporting and location sample clamp in described via bottoms; Described sample clamp comprises lower annulus body and upper annulus body, and sample clamping wherein and is fixedly connected with by the described body of annulus up and down by equally distributed screw.

2. sample sampler as claimed in claim 1, it is characterised in that, inside described upper annulus body or lower annulus body, it is formed with pressure ring highlightedly.

3. sample sampler as claimed in claim 1 or 2, it is characterised in that, carry at described sample and plate is fixedly installed water level gauge.

4. sample sampler as claimed in claim 3, it is characterised in that, described sample load plate is fixedly connected with U shape body frame by the four of both sides thru-bolts.

5. sample sampler as claimed in claim 3, it is characterised in that, finger discrepancy picks and places sample clamp to facilitate to be formed with semicircle breach in described sample load plate accommodation groove side.

6. sample sampler as claimed in claim 1, it is characterised in that, described sample load plate adopts aluminum alloy materials to make.