Work equipment battery case and battery unit

Patent metadata

Field	Value
Publication number	US-9583749-B2
Application number	US-201313990493-A
Country	US
Kind code	B2
Filing date	Jan 8, 2013
Priority date	Jan 8, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A work equipment battery case that stores a battery cell for driving a battery powered work equipment, the battery case includes: a plate-like bottom on which the battery cell is placed; and a plate-like side formed to project from the bottom, and arranged at an outside of the battery cell placed on the bottom, wherein a mass of a part of the side is larger than a mass of the other part of the side.

First claim

The invention claimed is:

1. A work equipment battery case that stores battery cells for driving a battery powered work equipment, the work equipment battery case comprising:
a plate-shaped bottom plate on which the battery cells are placed; and
a front side plate, a back side plate, a left side plate, and a right side plate projected from the bottom plate,
wherein the front side plate, the back side plate, the left side plate, and the right side plate are made of a same material, and a mass of the back side plate is larger than each mass of the front side, the left side, and the right side plates, and
wherein the battery case further comprises spacers, each of which being formed between the front side plate and the battery cells, between the left side plate and the battery cells, and between the right side plate and the battery cells.

2. The work equipment battery case according to claim 1 , wherein the battery case comprises plural storage sections each of which stores each battery cell, and the plural storage sections are gathered adjacent to the back side plate.

3. The work equipment battery case according to claim 1 , wherein a thickness of the back side plate is larger than each of the front side, the left side, and the right side plates.

4. The work equipment battery case according to claim 1 , wherein plural lifting hooks are mounted on the left side plate and the right side plate to be close to the back side plate.

5. A work equipment battery unit that drives a battery powered work equipment, the work equipment battery unit comprising:
battery cells; and
a battery case,
wherein the battery case includes a plate-shaped bottom on which the battery cells are placed and a front side plate, a back side plate, a left side plate, and a right side plate projected from the bottom plate, the front side plate, the back side plate, the left side plate, and the right side plate are made of a same material, and a mass of the back side plate is larger than each mass of the front side, the left side, and the right side plates, and the battery cells are gathered adjacent to the back side plate, and
wherein the battery case further comprises spacers each of which being formed between the front side plate and the battery cells, between the left side plate and the battery cells, and between the right side plate and the battery cells.

6. The work equipment battery unit according to claim 5 , wherein a thickness of the back side plate is larger than each of the front side plate, the left side plate, and the right side plate.

7. The work equipment battery unit according to claim 5 , wherein plural lifting hooks are mounted on the left side plate and the right side plate to be closer to the back side plate than the front side plate.

8. A battery powered work equipment comprising the work equipment battery unit according to claim 5 .

9. A battery powered forklift comprising
a fork mounted on a front of a body of the forklift,
a counter weight mounted on a rear of the body, and
a top plate arranged on a position for covering a portion above a driver seat via a pair of rear stays extending upward from left and right sides at the rear of the body,
wherein
the battery powered forklift is driven by electric power from a battery mounted on the body,
a battery case is mounted on the body on a position above a rear wheel so as to be capable of being unloaded toward the rear of the body,
the battery includes:
battery cells; and
the battery case comprising: a plate-shaped bottom on which the battery cells are placed; and a front side plate, a back side plate, a left side plate, and a right side plate projected from the bottom plate, the front side plate, the back side plate, the left side plate, and the right side plate are made of a same material, and the battery cells are gathered adjacent to the back side plate, and

wherein the battery case further comprises spacers each of which being formed between the front side plate and the battery cells, between the left side plate and the battery cells, and between the right side plate and the battery cells.

10. The battery powered forklift according to claim 9 , wherein plural lifting hooks are mounted on the left side plate and the right side plate to be close to the back side plate.

11. The battery powered forklift according to claim 10 , wherein the top plate has a slit which is formed along a longitudinal direction of the body, and opens to a rear end.

12. The battery powered forklift according to claim 9 , wherein a thickness of the back side plate is larger than each of the front side plate, the left side plate, and the right side plate.

Assignees

• Komatsu Mfg Co Ltd

Inventors

• Okuyama Tetsuya
• Souma Takeshi

Classifications

• B60K1/04 Primary

  of the electric storage means for propulsion · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title

• Y02T90/124

  Cross-Sectional Technologies · mapped topic

• B60K2001/0477

  from the back · CPC title