Tray for storing battery cells including a pressing device

Patent metadata

Field	Value
Publication number	US-2018301676-A1
Application number	US-201815952601-A
Country	US
Kind code	A1
Filing date	Apr 13, 2018
Priority date	Apr 18, 2017
Publication date	Oct 18, 2018
Grant date	—

Abstract

The present disclosure provides a tray for storing battery cells, in which a plurality of storage plates having at least one battery cell stored therein are loaded by being stacked in one direction, the tray including a pressing device configured to press one end portion or both end portions of the storage plates with respect to a direction in which the storage plates are stacked in the tray so that the battery cells are stored in the storage plate without clearance from the storage plate.

First claim

1 . A tray for storing battery cells, in which a plurality of storage plates having at least one battery cell stored therein are loaded by being stacked in one direction, the tray comprising a pressing device configured to press one end portion or both end portions of the storage plates with respect to a direction in which the storage plates are stacked in the tray so that the battery cells are stored in the storage plate without clearance from the storage plate.

2 . The tray of claim 1 , wherein the battery cells have a structure in which an electrode assembly having a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode is inserted and sealed in a plate type battery case.

3 . The tray of claim 1 , wherein the tray includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall protruding from an outer periphery of a bottom plate.

4 . The tray of claim 3 , wherein the storage plates are stacked in such a manner in which each of the storage plates is inserted between the first sidewall and the third sidewall.

5 . The tray of claim 1 , wherein the tray has a structure in which storage plates are stacked and arranged so that arrangement directions thereof are the same with each other.

6 . The tray of claim 1 , wherein the storage plates include an accommodation portion having a downward recess corresponding to a planar shape of the battery cell.

7 . The tray of claim 4 , wherein the pressing device comprises:
a pressing portion having at least one pressing plate for pressing one end portion of the storage plates; and a pressure controller configured to control a pressing force applied to the one end portion of the storage plates by the pressing plate.

8 . The tray of claim 7 , wherein the tray has a structure in which a distance between one side surface of the pressing plate facing the storage plates and an inner surface of the first sidewall of the tray facing the storage plates are configured to be set equal to an overall thickness of the storage plates in a stacking direction.

9 . The tray of claim 8 , wherein the tray has a structure in which the at least one pressing plate facing the storage plates is configured to be locked at the distance set to be equal to the overall thickness of the storage plates in the stacking direction.

10 . The tray of claim 7 , wherein the pressing portion further comprises:
a first pressing plate configured to press against one end portion or the other end portion of the storage plates; a second pressing plate configured to transmit the pressing force to the first pressing plate; and at least one support shaft configured to guide moving directions of the first pressing plate and the second pressing plate.

11 . The tray of claim 10 , wherein the pressure controller comprises:
an adjusting screw bolt configured to control the pressing force applied to the one end portion or the other end portion of the storage plates by changing a distance between the first pressing plate and the second pressing plate; and a support plate in which a part of the adjusting screw bolt is inserted and retained so that the adjusting screw bolt is configured to be rotated clockwise or counterclockwise with respect to an axis of the adjusting screw bolt.

12 . The tray of claim 10 , wherein the pressing portion further includes an elastic member for allowing the second pressing plate to transmit the pressing force to the first pressing plate.

Assignees

• Lg Chemical Ltd

Inventors

• Kim Gi Man
• Lee Ho Il
• Choi Hyoung Sik

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0481 Primary

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M50/262

  with fastening means, e.g. locks · CPC title

• H01M50/103

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M2/1077 Primary

  Electricity · mapped topic