Electric Storage Module and Electric Storage Device

• US 20110244282A1
• Filed: 03/30/2011
• Published: 10/06/2011
• Est. Priority Date: 04/01/2010
• Status: Active Grant

• Current Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Vehicle Energy, Ltd.
• Inventors: Sugawara, Tatsuo, SETO, Sadashi
• Granted Patent: US 9,368,771 B2
• Time in Patent Office: Days
• US Class Current: 429/82
• CPC Class Codes: H01M 10/6553 Terminals or leads
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/227 Organic material
• CPC Class Codes: H01M 50/276 Inorganic material
• CPC Class Codes: H01M 50/296 characterised by terminals of battery packs terminals of batteries H01M50/543
• CPC Class Codes: H01M 50/30 Arrangements for facilitating escape of gases
• CPC Class Codes: H01M 50/516 by welding, soldering or brazing
• CPC Class Codes: H01M 50/569 Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals battery terminal connectors with integrated measuring arrangements G01R31/364
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electric storage module includes: a plurality of electric storage units; a casing that houses the plurality of electric storage units, and includes a pair of resin side plates that hold and support at least the plurality of electric storage units from opposite sides; a plurality of conductive members for electrically connecting the plurality of electric storage units; a metal cover member that covers the casing on an outside of each of the side plates; and a peripheral wall protruding from each of the side plates so as to surround each of the plurality of conductive members, wherein: a height of the peripheral wall from each of the side plates is higher than a height of the conductive members from each of the side plates, and smaller than a distance from each of the side plates to the cover member.

Claims

1. An electric storage module comprising:

a plurality of electric storage units;

a casing that houses the plurality of electric storage units, and includes a pair of resin side plates that hold and support at least the plurality of electric storage units from opposite sides;

a plurality of conductive members for electrically connecting the plurality of electric storage units;

a metal cover member that covers the casing on an outside of each of the side plates; and

a peripheral wall protruding from each of the side plates so as to surround each of the plurality of conductive members, wherein;

a height of the peripheral wall from each of the side plates is higher than a height of the conductive members from each of the side plates, and smaller than a distance from each of the side plates to the cover member.

6. The electric storage module according to claim 1, further comprising:

a voltage detection conductor for detecting a voltage of each of the plurality of electric storage units, wherein;

the voltage detection conductor is formed to have a plurality of detection lines corresponding to positions of the plurality of conductive members, and a distance between the plurality of detection lines is set to 2 to 2.5 times an insulation creepage distance determined by a voltage of the electric storage module.

7. An electric storage device comprising:

an electric storage module according to claim 6; and

a control device that is connected to the voltage detection conductor to detect a voltage of the plurality of electric storage units and control an electric storage amount of the plurality of electric storage units.

2. An electric storage module comprising:

a plurality of electric storage units;

a casing that houses the plurality of electric storage units, and includes a pair of resin side plates that hold and support at least the plurality of electric storage units from opposite sides; and

a plurality of conductive members for electrically connecting the plurality of electric storage units;

wherein;

the plurality of electric storage units and the plurality of conductive members are fusion-joined; and

the plurality of conductive members have a wall for heat dissipation in the fusion-joining.

3. The electric storage module according to claim 2, wherein:

end regions of the plurality of conductive members are joined to end surfaces of the plurality of electric storage units, and

an oval through hole for releasing a gas from each electric storage unit is formed in each of the end regions of the plurality of conductive members.

4. The electric storage module according to claim 2, further comprising:

a metal cover member that covers the casing on an outside of each of the pair of side plates, wherein;

a height of the wall is set to be lower than a height of the cover member mounted to each of the side plates when the plurality of conductive members and the plurality of electric storage units are fusion-joined.

5. The electric storage module according to claim 2, wherein:

the plurality of electric storage units and the plurality of conductive members are fusion-joined by arc welding.