Section sample preparation workbench

Abstract

The utility model discloses a section sample preparation workbench which comprises a base, a sample table and a cutting device, and the base comprises a bearing surface and a connecting surface. The bearing surface and the connecting surface extend in the first direction, and the bearing surface is arranged below the connecting surface in the second direction. The sample table is arranged on the bearing surface and is used for placing a lithium ion battery pole piece; the cutting device comprises a driving assembly, a blade clamping rod and a blade. The driving assembly is arranged on the connecting face. And the blade extends along the second direction and is arranged above the sample table. One end of the blade clamping rod is connected with the blade, and the other end is connected with the cutting device for driving the blade to move along the second direction through the driving assembly to cut the lithium ion battery pole piece on the sample table. The blade used by the section sample preparation workbench is fixed by the clamp, so that the blade can perform vertical cutting, and the occurrence of blade collapse is reduced, thereby ensuring the safe operation of operators.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a cross-section sample preparation workbench. Background Art

[0002] Lithium-ion battery pole piece cross-section characterization is widely used in the field of lithium-ion battery pole piece material performance evaluation due to its intuitiveness and effectiveness, such as the uniformity of positive and negative pole pieces of liquid lithium-ion battery pole pieces; the quality of the interface of solid-state batteries, etc. Cross-section characterization usually requires artificial creation of a cross section. Currently, the commonly used methods include scissor cutting, blade cutting, ion grinding, liquid nitrogen brittle breaking, etc.

[0003] At present, in the process of preparing the cross section of the pole piece of lithium-ion battery, the scissor cutting method will cause stress on the upper and lower surfaces of the pole piece, resulting in the damage of the prepared cross section, which cannot characterize the true characteristics of the battery pole piece. The blade cutting method can make the pole piece subject to single-sided stress, and the prepared pole piece cross section is less damaged. However, the pole piece is subjected to huge single-sided stress in a short time when cut by the blade, which will cause the sample to break and fly. The cutting angle must be vertical, and the sharp blade poses a huge safety hazard to the operator. The sample after the break cannot be distinguished from the prepared cross section by the naked eye. The cross section prepared by liquid nitrogen brittle fracture cannot control the size and properties of the sample. The preparation of the cross section by ion grinding requires the preparation of a sample of a specified size and the installation of a silicon wafer combination in advance. The process is cumbersome and complicated. The operator needs a long training to complete the sample preparation. The training cycle is long to ensure that the quality of the prepared battery pole piece cross section sample meets the standard. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide a cross-section sample preparation workbench to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is a cross-section sample preparation workbench for cutting lithium-ion battery pole pieces, wherein the lithium-ion battery pole pieces extend along a first direction and the bottom is attached to a silicon wafer, and the cross-section sample preparation workbench comprises:

[0006] A base, the base comprising a bearing surface and a connecting surface; the bearing surface and the connecting surface both extend along the first direction, the bearing surface is arranged below the connecting surface along the second direction, and the first direction is perpendicular to the second direction;

[0007] A sample stage, which is arranged on the carrying surface and is used to place the lithium-ion battery electrode;

[0008] A cutting device, the cutting device is provided and includes a driving component, a blade clamping rod and a blade; the driving component is arranged on the connecting surface; the blade extends along the second direction and is arranged above the sample stage; one end of the blade clamping rod is connected to the blade and the other end is connected to the cutting device, and is used to drive the blade to move along the second direction through the driving component to cut the lithium-ion battery electrode located on the sample stage.

[0009] The cross-sectional sample preparation workbench provided by the utility model has a base for supporting various components of the assembly tool, a sample table for carrying the sample to be prepared, a blade clamping rod for fixing the blade, and a driving component for operating the blade so that it can move along the second direction, thereby realizing safe, efficient, accurate and simple preparation of battery cross-sectional samples. The blade used in the cross-sectional sample preparation workbench is fixed by a clamp so that the blade can perform vertical cutting, reduce the occurrence of blade chipping, and thus ensure safe operation of the operator.

[0010] In some embodiments, a pressure sheet spring is provided on the top of the sample stage; the pressure sheet spring is provided on the side of the top of the sample stage away from the blade and the bearing surface; the pressure sheet spring is connected to the sample stage at one end away from the blade along the first direction, and is suspended at one end close to the blade, so as to form a fixed space with the sample stage, and to fix the lithium-ion battery electrode, and is fixed by crimping with the pressure sheet spring.

[0011] By adopting the above technical scheme, the battery electrode is fixed by using a sample table and a pressure spring. The pressure spring used in the utility model to fix the sample can ensure that the cut sample does not move, the combined sample is not easy to be delaminated, the sample can be trimmed multiple times to control the sample size, and the cut cross-section is easy to identify.

[0012] In some embodiments, the sample table includes a mounting groove and a cutting plate, the mounting groove extends along a third direction and is arranged below the blade and the suspended end of the pressure spring, the first direction, the second direction and the third direction are perpendicular to each other; the cutting plate is arranged in the mounting groove.

[0013] By adopting the above technical solution, the cutting plate arranged in the installation groove can buffer the sample after the blade cuts it, thereby reducing the wear of the blade and the cost of sample preparation.

[0014] In some embodiments, along the third direction, the length of the cutting board is greater than or equal to the length of the blade.

[0015] By adopting the above technical solution, the length of the cutting board is greater than the length of the blade, so that the blade can completely fall into the protection range of the cutting board after cutting.

[0016] In some embodiments, a sliding portion extending along the first direction is provided at the bottom of the sample stage; and a sliding groove corresponding to the position of the sliding portion is provided at one end of the base away from the blade along the first direction for sliding cooperation with the sliding portion.

[0017] By adopting the above technical solution, the sample stage can be inserted into the base along the slide groove, so that the sample stage can be slidably disassembled and replaced.

[0018] In some embodiments, the driving assembly includes a sample cutting transmission rod and a manual pressure rod; the sample cutting transmission rod is arranged on the connecting surface, one end of which is connected to the blade clamping rod, and the other end is connected to the manual pressure rod; the manual pressure rod is arranged on one side of the base along the third direction, and is used for when the manual pressure rod is pressed down toward the sample stage, the sample cutting transmission rod drives the blade clamping rod to move downward for cutting; when the manual pressure rod is moved up away from the sample stage, the sample cutting transmission rod drives the blade clamping rod to move upward.

[0019] With the above technical solution, the manual pressure rod is operated to drive the blade to move up and down through the cutting transmission rod to achieve sample cutting. When preparing the sample, the sample to be prepared is placed on the sample table, fixed with a pressure spring, and then the manual pressure rod drives the blade to cut the sample into the required size.

[0020] In some embodiments, a sample fixing groove is provided at one end of the top of the carrying surface along the third direction; and a convex portion corresponding to the position of the sample fixing groove is provided at the bottom of the silicon wafer for plugging and fixing.

[0021] By adopting the above technical solution, the sample slot of the base can fix the silicon wafer and prevent it from moving, making the fixation of the sample more convenient.

[0022] In some embodiments, the cutting board is an acrylic board.

[0023] With the above technical solution, the groove on the sample table is used to fix the acrylic plate, which is low in cost and can be replaced regularly according to the degree of wear. In addition, the acrylic plate has the characteristics of strong impact resistance, which is sixteen times that of ordinary glass, and is suitable for bearing repeated impacts of blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of an embodiment of a cross-section sample preparation workbench of the utility model;

[0025] Figure 2 It is a structural schematic diagram of an embodiment of a cross-section sample preparation workbench of the utility model;

[0026] In the figure:

[0027] 1- cross-section sample preparation workbench; 2- base; 20- bearing surface; 21- connection surface; 22- slide groove; 23- sample fixing groove; 3- sample table; 30- pressure spring; 31- mounting groove; 32- sliding part; 4- cutting device; 40- driving assembly; 41- sample cutting transmission rod; 42- manual pressure rod; 43- blade clamping rod; 44- blade. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] refer to Figure 1 and Figure 2 , Figure 1 A three-dimensional diagram of a cross-section sample preparation workbench 1 provided in an embodiment of the utility model is shown; Figure 2 A schematic structural diagram of a cross-section sample preparation workbench 1 provided in an embodiment of the utility model is shown.

[0030] like Figure 1 and Figure 2 As shown, the technical solution adopted by the utility model is a cross-section sample preparation workbench 1 for cutting lithium-ion battery pole pieces, the lithium-ion battery pole pieces are cut along a first direction ( Figure 1 The cross-sectional sample preparation workbench 1 includes: a base 2, a sample stage 3 and a cutting device 4, wherein the base 2 includes a bearing surface 20 and a connecting surface 21. The bearing surface 20 and the connecting surface 21 both extend along the first direction, and the bearing surface 20 is provided on the connecting surface 21 along the second direction ( Figure 1 The first direction is perpendicular to the second direction. The sample stage 3 is disposed on the bearing surface 20 for placing the lithium-ion battery pole piece. The cutting device 4 is provided and includes a driving component 40, a blade clamping rod 43 and a blade 44. The driving component 40 is disposed on the connecting surface 21. The blade 44 extends along the second direction and is disposed above the sample stage 3. One end of the blade clamping rod 43 is connected to the blade 44 and the other end is connected to the cutting device 4, which is used to drive the blade 44 to move along the second direction through the driving component 40 to cut the lithium-ion battery pole piece located on the sample stage 3.

[0031] The cross-sectional sample preparation workbench 1 provided in the present application has a base 2 for supporting the various components of the assembly tool, a sample table 3 for carrying the sample to be prepared, a blade clamp 43 for fixing the blade 44, and a drive assembly 40 for operating the blade 44 so that it can move along the second direction, thereby achieving safe, efficient, accurate, and simple preparation of battery cross-sectional samples. The blade 44 used in the cross-sectional sample preparation workbench 1 is fixed by a clamp so that the blade 44 can perform vertical cutting, reduce the occurrence of blade 44 cracking, and thus ensure safe operation of the operator.

[0032] In some embodiments, reference Figure 1 and Figure 2 A pressure spring 30 is provided on the top of the sample stage 3. The pressure spring 30 is provided on the side of the top of the sample stage 3 away from the blade 44 and the bearing surface 20. One end of the pressure spring 30 away from the blade 44 along the first direction is connected to the sample stage 3, and the other end close to the blade 44 is suspended, which is used to form a fixed space with the sample stage 3, and is used to fix the lithium-ion battery electrode, and is fixed by crimping the pressure spring 30.

[0033] Exemplarily, the battery electrode is fixed by using the sample table 3 and the compression spring 30. The compression spring 30 used in the utility model to fix the sample can ensure that the cut sample does not move, the combined sample is not easy to be delaminated, the sample can be trimmed multiple times to control the sample size, and the cut cross section is easy to identify.

[0034] In some embodiments, reference Figure 1 and Figure 2 The sample stage 3 includes a mounting groove 31 and a cutting plate (not shown in the figure), and the mounting groove 31 is along the third direction ( Figure 1 The cutting plate is arranged in the mounting groove 31.

[0035] Exemplarily, the cutting plate disposed in the mounting groove 31 can buffer the sample after the blade 44 cuts the sample, thereby reducing the wear of the blade 44 and the sample preparation cost.

[0036] In some embodiments, reference Figure 1 and Figure 2 , along the third direction, the length of the cutting board is greater than or equal to the length of the blade 44.

[0037] Exemplarily, the length of the cutting board is greater than the length of the blade 44, so that the blade 44 can completely fall into the protection range of the cutting board after cutting.

[0038] In some embodiments, reference Figure 1 and Figure 2The bottom of the sample stage 3 is provided with a sliding portion 32 extending along the first direction. The end of the base 2 away from the blade 44 along the first direction is provided with a sliding groove 22 corresponding to the position of the sliding portion 32 for sliding cooperation with the sliding portion 32.

[0039] Exemplarily, the sample stage 3 can be inserted into the base 2 along the slide groove 22 , so that the sample stage 3 can be slidably disassembled and replaced.

[0040] In some embodiments, reference Figure 1 and Figure 2 The driving assembly 40 includes a cutting transmission rod 41 and a manual pressure rod 42. The cutting transmission rod 41 is arranged on the connection surface 21, one end of which is connected to the blade clamping rod 43, and the other end is connected to the manual pressure rod 42. The manual pressure rod 42 is arranged on one side of the base 2 along the third direction, and is used for when the manual pressure rod 42 is pressed down toward the sample stage 3, the cutting transmission rod 41 drives the blade clamping rod 43 to move downward to perform cutting. When the manual pressure rod 42 moves upward away from the sample stage 3, the cutting transmission rod 41 drives the blade clamping rod 43 to move upward.

[0041] Exemplarily, the manual pressure rod 42 is operated to drive the blade 44 to move up and down through the sample cutting transmission rod 41 to achieve sample cutting. When preparing the sample, the sample to be prepared is placed on the sample stage 3, fixed with the pressure spring 30, and then the manual pressure rod 42 drives the blade 44 to cut the sample into a desired size.

[0042] In some embodiments, reference Figure 1 and Figure 2 A sample fixing groove 23 is provided at one end of the top of the carrying surface 20 along the third direction. A convex portion corresponding to the position of the sample fixing groove 23 is provided at the bottom of the silicon wafer for plugging and fixing.

[0043] Exemplarily, the sample slot of the base 2 can fix the silicon wafer so as not to move, making the fixation of the sample more convenient.

[0044] In some embodiments, the cutting sheet is an acrylic sheet.

[0045] For example, the groove on the sample stage 3 is used to fix the acrylic plate, which is low in cost and can be replaced regularly according to the degree of wear. In addition, the acrylic plate has the characteristics of strong impact resistance, which is sixteen times that of ordinary glass, and is suitable for bearing the repeated impact of the blade 44.

[0046] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A cross-section sample preparation workbench for cutting a lithium-ion battery pole piece, wherein the lithium-ion battery pole piece extends along a first direction and the bottom is attached to a silicon wafer, characterized in that: The cross-section sample preparation workbench comprises: A base, the base comprising a bearing surface and a connecting surface; the bearing surface and the connecting surface both extend along the first direction, the bearing surface is arranged below the connecting surface along the second direction, and the first direction is perpendicular to the second direction; A sample stage, which is arranged on the carrying surface and is used to place the lithium-ion battery electrode; A cutting device, the cutting device is provided and includes a driving component, a blade clamping rod and a blade; the driving component is arranged on the connecting surface; the blade extends along the second direction and is arranged above the sample stage; one end of the blade clamping rod is connected to the blade and the other end is connected to the cutting device, and is used to drive the blade to move along the second direction through the driving component to cut the lithium-ion battery electrode located on the sample stage.

2. The cross-section sample preparation workbench according to claim 1, characterized in that: A pressure sheet spring is provided on the top of the sample stage; the pressure sheet spring is arranged on the side of the top of the sample stage away from the blade and the bearing surface; the pressure sheet spring is connected to the sample stage at one end away from the blade along the first direction, and is suspended at one end close to the blade, so as to form a fixed space with the sample stage, and to fix the lithium-ion battery electrode, and is fixed by crimping with the pressure sheet spring.

3. The cross-section sample preparation workbench according to claim 2, characterized in that: The sample table includes a mounting groove and a cutting plate. The mounting groove extends along a third direction and is arranged below the blade and one suspended end of the pressure spring. The first direction, the second direction and the third direction are perpendicular to each other. The cutting plate is arranged in the mounting groove.

4. The cross-section sample preparation workbench according to claim 3, characterized in that: Along the third direction, the length of the cutting board is greater than or equal to the length of the blade.

5. The cross-section sample preparation workbench according to claim 1, characterized in that: A sliding portion extending along the first direction is provided at the bottom of the sample stage; a sliding groove corresponding to the position of the sliding portion is provided at one end of the base away from the blade along the first direction for sliding cooperation with the sliding portion.

6. The cross-section sample preparation workbench according to claim 1, characterized in that: The driving assembly includes a sample cutting transmission rod and a manual pressure rod; the sample cutting transmission rod is arranged on the connecting surface, one end of which is connected to the blade clamping rod, and the other end is connected to the manual pressure rod; the manual pressure rod is arranged on one side of the base along the third direction, and is used for when the manual pressure rod is pressed down toward the sample stage, the sample cutting transmission rod drives the blade clamping rod to move downward for cutting; when the manual pressure rod is moved up away from the sample stage, the sample cutting transmission rod drives the blade clamping rod to move upward.

7. The cross-section sample preparation workbench according to claim 1, characterized in that: A sample fixing groove is provided at one end of the top of the bearing surface along the third direction; a convex portion corresponding to the position of the sample fixing groove is provided at the bottom of the silicon wafer for plugging and fixing.

8. The cross-section sample preparation workbench according to claim 4, characterized in that: The cutting board is an acrylic board.

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