# US 8,785,018 B2 · Battery pack case

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- Number: US 8,785,018 B2
- Document ID: US8785018B2
- Status: Granted
- Kind: B2
- Application number: 13/526,630
- Filed: 2012-06-19
- Published: 2013-08-29
- Granted: 2014-07-22
- Earliest claimed: 2012-02-27
- Assignees: Global Battery Co., Ltd.
- Applicants: Gueng Hyun Nam; Tae Sin Kim; Duck Jun Lee; Jin Woo Roh; Min Ho Jang
- Inventors: Gueng Hyun Nam; Tae Sin Kim; Duck Jun Lee; Jin Woo Roh; Min Ho Jang
- Web page: https://patentgrep.com/patent/US8785018B2

## CPC

- H01M 10/6551: Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
- H01M 10/486: {for measuring temperature}
- H01M 10/488: {Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density}
- H01M 50/211: adapted for pouch cells
- H01M 50/262: with fastening means, e.g. locks
- H01M 50/271: Lids or covers for the racks or secondary casings
- H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543)
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Disclosed herein is a battery pack case. An upper cover, a lower support base and each side cover form at least one seating depression extending in a sideways direction. Each of the front and rear covers has band locking depressions at positions corresponding to the seating depressions. Each band locking depression has a shape corresponding to a related one of fixing bands. Each fixing band includes a band body which is made of rubber, fabric or plastic and extends a predetermined length in one direction, and a locking protrusion provided on each of opposite ends of the band body. The locking protrusion has a structure corresponding to a related one of the band locking depressions. The locking protrusions of the fixing bands are inserted into the corresponding band locking depressions, thus fastening the elements including the front cover and the rear cover together.

## Claims

### Claim 1

A battery pack case, comprising:
a lower support base forming a bottom of an internal space to contain a battery module including battery cells electrically connected to each other;
side covers coupled to respective opposite side edges of the lower support base, each of the side covers comprising a plate placed upright;
an upper cover coupled to upper ends of the side covers to form an upper surface of the battery pack case;
a front cover and a rear cover respectively coupled to front and rear ends of the upper cover and the side covers; and
a fixing band fastened to opposite sidewalls of the battery pack case to couple the front cover, the side covers, the lower support base and the rear cover together,
wherein the upper cover, the lower support base and each of the side covers have at least one seating depression extending in a sideways direction,
each of the front and rear covers has at least one band locking depression at a position corresponding to said at least one seating depression, said at least one band locking depression having a shape corresponding to a related one of ends of the fixing band, and
the fixing band comprises a band body extending in one direction, and a locking protrusion provided on each of opposite ends of the band body, the locking protrusion having a structure corresponding to a related one of the band locking depression, so that the locking protrusion of the fixing band is inserted into the corresponding band locking depression, thus fastening the front cover, the upper cover, the side covers, the lower support base and the rear cover to each other.

### Claim 2 (depends on 1)

The battery pack case as set forth in claim 1, wherein the upper cover comprises:
a first upper insert part stepped from side surfaces extending downwards from opposite side edges of the top surface, the first upper insert part extending downwards towards the upper ends of the side covers; and
a second upper insert part extending from a top surface of the upper cover forwards the front cover and the rear cover, the second upper insert part being inserted into the front cover and the rear cover.

### Claim 3 (depends on 1)

The battery pack case as set forth in claim 1, wherein each of the side covers comprises:
a side cover body;
a first side insert end stepped and protruded from each of upper and lower ends of the side cover body; and
mounting bars provided on the side cover body and extending in a vertical direction, the mounting bars respectively protruding from the side cover body towards the front cover and the rear cover.

### Claim 4 (depends on 1)

The battery pack case as set forth in claim 1, wherein the lower support base comprises:
a bottom plate;
hinge shafts provided on front and rear ends of the bottom plate, each of the hinge shafts being fastened at opposite ends thereof to shaft support plates that are placed upright on the bottom plate at positions spaced apart from each other;
bottom side plates protruding upwards from opposite side edges of the bottom plate, the bottom side plates being coupled to the corresponding side covers; and
coupling plates protruding upwards from the bottom plate to have different heights relative to upper ends of the bottom side plates, the coupling plates making close contact with inner surfaces of the corresponding side covers.

### Claim 5 (depends on 4)

The battery pack case as set forth in claim 4, wherein the lower support base further comprises
at least one support panel extending from the bottom plate, with a fastening hole formed through the support panel, the support panel being in close contact with a support surface.

### Claim 6 (depends on 4)

The battery pack case as set forth in claim 4, wherein each of the front and rear covers comprises a coupling extension extending downwards therefrom and having a semicircular cross-section, a shaft locking depression is formed in the coupling extension that extends in a horizontal direction, and the corresponding hinge shaft is seated into the shaft locking depression.

### Claim 7 (depends on 1)

The battery pack case as set forth in claim 1, wherein the front cover comprises:
a display indicating at least one of an internal temperature and an input/output voltage level; and
a heat dissipation window having an opening and a plurality of horizontal support bars provided in the opening, each of the support bars capable of being inclined, so that heat generated in the battery pack case is dissipated to an outside through the heat dissipation window.

### Claim 8 (depends on 1)

The battery pack case as set forth in claim 1, wherein the side covers further comprise:
a power connector through which external power is input/output; and
a USB terminal for communication with an external battery or an external system.

### Claim 9 (depends on 1)

The battery pack case as set forth in claim 1, wherein the upper cover further comprises:
an electrode pole hole through which an electrode pole protrudes from the top surface of the upper cover, so that power is input into or output from the battery module including the battery cells electrically connected to each other; and
a transparent window formed in the top surface of the upper cover to allow a user to observe an interior of the battery pack case.

### Claim 10 (depends on 1)

The battery pack case as set forth in claim 1, wherein the seating depression is formed between a stepped portion of each of the side covers and a stepped portion of the upper cover.

### Claim 11 (depends on 1)

The battery pack case as set forth in claim 1, wherein the seating depression is formed between a stepped portion of each of the side covers and a stepped portion of a corresponding one of the bottom side plates that protrude upwards from the lower support base.

### Claim 12 (depends on 5)

The battery pack case as set forth in claim 5, wherein the lower support base further comprises support plates provided upright on the bottom plate at positions spaced apart from each other, the support plates supporting opposite sides of the battery cells placed on the bottom plate.

### Claim 13 (depends on 1)

The battery pack case as set forth in claim 1, wherein the locking protrusion provided on the opposite ends of the band body has an ‘L’ shape.

### Claim 14 (depends on 1)

The battery pack case as set forth in claim 1, wherein the band body is made of rubber, fabric or plastic.

### Claim 15

A battery pack case, comprising:
a Lower support base forming a bottom of an internal space to contain a battery module including battery cells electrically connected to each other;
side covers coupled to the lower support base to cover sides facing to each other;
an upper cover coupled to the upper cover and the side covers to form a front side of the battery pack case;
a rear cover coupled to the upper cover and the side covers to form a rear side of the battery pack case;
at least one seating depression extending in a sideways direction, said at least one seating depression formed in the upper cover, the lower support base and the side covers, and
at least one fixing band seating on said at least one seating depression to couple the front cover, the side covers, the lower support base and the rear cover together, wherein each of the front and rear covers has at least one band locking depression at a position corresponding to said at least one seating depression, said at least one band locking depression having a shape corresponding to a related one of ends of the fixing band.

### Claim 16 (depends on 15)

The battery pack case as set forth in claim 15, wherein the fixing band comprises a band body extending in one direction, and a locking protrusion provided on each of opposite ends of the band body, the locking protrusion having a structure corresponding to a related one of the band locking depression, so that the locking protrusion of the fixing band is inserted into the corresponding band locking depression, thus fastening the front cover, the upper cover, the side covers, the lower support base and the rear cover to each other.