Device for measuring length of electrode plate

Patent metadata

Field	Value
Publication number	US-9476702-B2
Application number	US-201314016464-A
Country	US
Kind code	B2
Filing date	Sep 3, 2013
Priority date	Mar 21, 2013
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A system for measuring a length of an electrode plate includes a body on which an electrode plate roll formed by spirally winding the electrode plate is provided; a control device to which the body is combined; and a measuring device including a thickness measurement unit combined with the body and electrically connected to the control device to measure a spirally wound thickness of the electrode plate that is spirally wound on the electrode plate roll, and a diameter measurement unit to measure a diameter of a hollow portion of the electrode plate roll, wherein the control device receives a moving distance of the thickness measurement unit and a moving distance of the diameter measurement unit and calculates the length of the electrode plate of the electrode plate roll.

First claim

What is claimed is:

1. A system for measuring a length of an electrode plate, the system comprising:
a body on which an electrode plate roll formed by spirally winding the electrode plate is provided;
a control device to which the body is combined; and
a measuring device including:
a thickness measurement unit combined with the body and electrically connected to the control device to measure a spirally wound thickness of the electrode plate that is spirally wound on the electrode plate roll, and
a diameter measurement unit to measure a diameter of a hollow portion of the electrode plate roll, wherein

the control device receives a moving distance of the thickness measurement unit and a moving distance of the diameter measurement unit and calculates the length of the electrode plate of the electrode plate roll
wherein:
the thickness measurement unit moves in parallel with a second direction that is perpendicular to a central axis direction of the hollow portion of the electrode plate roll, and
the diameter measurement unit moves in parallel with the second direction.

2. The system as claimed in claim 1 , wherein:
the thickness measurement unit includes a first solenoid combined to the body, a first column combined to the first solenoid and moving in the second direction, and a first contact bar combined to a first end of the first column, and
the diameter measurement unit includes a second solenoid combined to the body, a second column combined to the second solenoid and moving in the second direction, and a second contact bar combined to a first end of the second column.

3. The system as claimed in claim 2 , wherein
the measuring device further includes a sensor in the hollow portion of the body.

4. The system as claimed in claim 3 , wherein
the sensor includes:
a sensor case in the hollow portion of the body;
a first substrate in which a first ultrasonic wave generating device and a first ultrasonic wave receiving device are inside the sensor case corresponding to a bottom portion of the first column; and
a second substrate in which a second ultrasonic wave generating device and a second ultrasonic wave receiving device are inside the sensor case corresponding to a bottom portion of the second column.

5. The system as claimed in claim 4 , wherein:
the first ultrasonic wave generating device and the first ultrasonic wave receiving device measure a moving distance of the first column moving in the second direction, and
the second ultrasonic wave generating device and the second ultrasonic wave receiving device measure a moving distance of the second column moving in the second direction.

6. The system as claimed in claim 5 , wherein
the control device further includes a calculating unit that receives values measured by the measuring device, and
the calculating unit receives the moving distance of the first column to calculate a spirally wound thickness of the electrode plate roll, and receives the moving distance of the second column to calculate the diameter of the hollow portion of the electrode plate roll.

7. The system as claimed in claim 6 , wherein
the control device includes:
an output unit that displays at least one spirally wound thickness of the electrode plate roll, the diameter of the hollow portion of the electrode plate roll, and the length of the electrode plate of the electrode plate roll; and
an input unit that inputs at least one of the diameter of the body and the thickness of the electrode plate.

8. The system as claimed in claim 6 , wherein
the electrode plate includes a current collector and a pair of coating layers coated on respective sides of the current collector.

9. The system as claimed in claim 8 , wherein
when the spirally wound thickness of the electrode plate roll is T 1 , the diameter of the body is D 1 , the moving distance of the second column is L 2 , the thickness of the current collector is T 3 , and the thicknesses of the pair of coating layers coated on the sides of the current collector are T 4 ,
the calculating unit calculates a length (L) of the electrode plate spirally wound on the electrode plate roll from the following Equation 3:

L
=

(

(

T
⁢

⁢
1

+

(

D
⁢

⁢
1

+

L
⁢

⁢
2

)

/
2

)

2

×
π

)

-

(

(

D
⁢

Assignees

• Samsung Sdi Co Ltd
• Bosch Gmbh Robert

Inventors

• Kim In
• Kim Eun-Jung
• Hwang Yong-Shik
• Kim Duk-Jung
• Kim Hyung-Sik
• Choi Soo-Seok

Classifications

• G01B21/02

  for measuring length, width, or thickness (G01B21/10 takes precedence) · CPC title

• G01B17/02 Primary

  for measuring thickness · CPC title

• G01B5/10

  of objects while moving · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• G01B5/06 Primary

  for measuring thickness · CPC title