BATTERY PACK AND ELECTRIC DEVICE

• US 20140295257A1
• Filed: 02/06/2014
• Published: 10/02/2014
• Est. Priority Date: 03/29/2013
• Status: Abandoned Application

• Current Assignee: Hitachi KOKI Company Limited (Koki Holdings Co., Ltd.)
• Original Assignee: Hitachi KOKI Company Limited (Koki Holdings Co., Ltd.)
• Inventors: HARADA, Tetsuhiro
• Application Number:
  US14/174,596
• Publication Number:
  US 20140295257A1
• Time in Patent Office: Days
• US Class Current: 429/179
• CPC Class Codes: B25F 5/02 Construction of casings, bodies or handles B25F5/006, B25F5/008 take precedence
• 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 50/24 adapted for protecting batteries from their environment, e.g. from corrosion thermal insulation H01M10/658
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A battery pack that can seal a battery cell is provided. The battery pack includes: a housing case that can house a battery cell and can be attached to and detached from a tool main body; a circuit board that retains a battery-side terminal connected to the battery cell; a sealed container that covers the battery cell; an opening portion that is provided on the sealed container and exposes the battery-side terminal to outside of the sealed container; and a bonding part that seals the part between an edge forming the opening portion and the circuit board.

Claims

1. A battery pack comprising:

a housing case that houses a battery cell and can be attached to and detached from an electric-device main body;

a retaining member that retains a battery-side terminal connected to the battery cell;

a covering container that is housed in the housing case and covers the battery cell;

a window part that is provided on the covering container and exposes the battery-side terminal to outside of the covering container; and

a seal part that seals apart between an edge forming the window part and the retaining member.

2. The battery pack according to claim 1,

wherein the retaining member includes a circuit board provided with an electric circuit connected to the battery-side terminal.

3. The battery pack according to claim 1,

wherein the seal part is interposed between the edge and the retaining member.

4. The battery pack according to claim 1,

wherein a wall part that contacts the covering container and surrounds the seal part is provided.

5. The battery pack according to claim 4,

wherein the wall part is in contact with at least one of an outer surface and an inner surface of the covering container.

6. The battery pack according to claim 1,

wherein the housing case includes

a case main body that houses the covering container and

a cover that covers the case main body,

the cover including

a terminal insertion hole into which the battery-side terminal is inserted, and

a holding part that pushes the wall part against the covering container.

7. The battery pack according to claim 6,

wherein the wall part sandwiches the covering container and the circuit board.

8. A battery pack comprising:

a housing case that houses a battery cell and can be attached to and detached from an electric-device main body;

a retaining member that retains a battery-side terminal connected to the battery cell;

a covering container that covers the battery cell;

a window part that is provided on the covering container and exposes the battery-side terminal to outside of the covering container;

a case that includes

a case main body having an opening portion in an upper side and housing the covering container, and

a cover covering the opening portion and provided with a terminal insertion hole exposing the battery-side terminal to outside of the case main body; and

a seal part that prevents a foreign matter from entering inside of the covering container through the window part.

9. The battery pack according to claim 8,

wherein the retaining member includes a circuit board provided with an electric circuit connected to the battery-side terminal;

the circuit board is disposed above the battery cell; and

the window part is positioned above the circuit board.

10. The battery pack according to claim 9,

wherein the covering container has a hole that penetrates through inside and outside of the covering container;

and

the hole is closed after a part to be housed in the covering container is housed from the hole.

11. The battery pack according to claim 9,

wherein the covering container is formed by coupling two divided bodies.

12. An electric device comprising:

a battery pack including a housing case that houses a battery cell and can be attached to and detached from an electric-device main body, a retaining member that retains a battery-side terminal connected to the battery cell, a covering container that is housed in the housing case and covers the battery cell, a window part that is provided on the covering container and exposes the battery-side terminal to outside of the covering container, and a seal part that seals apart between an edge forming the window part and the retaining member; and

an electric-device main body to and from which the battery pack can be attached and detached.