# US 12,191,517 B2 · Battery box

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- Number: US 12,191,517 B2
- Document ID: US12191517B2
- Status: Granted
- Kind: B2
- Application number: 17/355,712
- Filed: 2021-06-23
- Published: 2021-10-14
- Granted: 2025-01-07
- Earliest claimed: 2018-12-27
- Assignees: Contemporary Amperex Technology (Hong Kong) Limited
- Applicants: Contemporary Amperex Technology (Hong Kong) Limited
- Inventors: Liwen Jiang; Wumei Fang
- Web page: https://patentgrep.com/patent/US12191517B2

## CPC

- H01M 50/289: characterised by spacing elements or positioning means within frames, racks or packs (spacing elements inside cells other than separators, membranes or diaphragms H01M50/471)
- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells
- H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence)
- H01M 50/244: Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
- H01M 50/262: with fastening means, e.g. locks
- H01M 50/271: Lids or covers for the racks or secondary casings
- H01M 50/291: characterised by their shape
- 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

The present application provides a battery box, including a battery and an electronic device electrically connected to the battery. The battery box further includes a lower box body, including a first box part and a second box part, where the second box part is integrally connected to the first box part; a first top cover, hermetically and removably mounted in a height direction above the first box part and forming a sealed first space with the first box part, where the first space accommodates the battery; and a second top cover, hermetically and removably mounted in the height direction above the second box part and forming a sealed second space with the second box part, where the second space accommodates the electronic device electrically connected to the battery, and the second top cover is disposed independent of the first top cover.

## Claims

### Claim 1

A battery box, comprising a battery and an electronic device electrically connected to the battery, wherein the battery box further comprises:
a lower box body, comprising a first box part and a second box part, wherein the second box part is integrally connected to the first box part;
a first top cover, hermetically and removably mounted in a height direction above the first box part and forming a sealed first space with the first box part, wherein the first space accommodates the battery; and
a second top cover, hermetically and removably mounted in the height direction above the second box part and forming a sealed second space with the second box part, wherein the second space accommodates the electronic device electrically connected to the battery, and the second top cover is disposed independent of the first top cover;
wherein the lower box body comprises a bottom wall; a first side wall, connected to a periphery of the bottom wall and extending upward; and a first flange, connected to an end of the first side wall and extending to outside of the lower box body;
the lower box body further comprises a separator, mounted between the first box part and the second box part to separate the first box part from the second box part; and
the separator comprises a first fastening part, abutting against and fastened to the first flange and extending along the first flange; a separating piece, connected to the first fastening part and bending downwards from the first fastening part, with a bottom end abutting against the bottom wall, to separate the first box part from the second box part of the lower box body; and a second fastening part, connected to an end of the separating piece opposite the first fastening part and extending away from the first fastening part, in the height direction, wherein the second fastening part is fastened to the bottom wall.

### Claim 2 (depends on 1)

The battery box according to claim 1, wherein the first top cover comprises a first top wall; a second side wall, connected to a periphery of the first top wall and extending to the lower box body; and a second flange, connected to an end of the second side wall and extending to outside of the first top cover, wherein the second flange of the first top cover is hermetically fastened to the first flange disposed on the first box part of the lower box body and the first fastening part of the separator.

### Claim 3 (depends on 2)

The battery box according to claim 2, wherein
there are two first fastening parts, wherein each first fastening part is at least partially abutting against and fastened to the first flange; and
the separator further comprises a concave portion, disposed between the two first fastening parts and recessed relative to the two first fastening parts along the height direction, wherein the concave portion is configured for a cable that electrically connects the battery and the electronic device to pass through.

### Claim 4 (depends on 3)

The battery box according to claim 3, wherein the battery box further comprises a sealing piece, configured to seal a corresponding portion between the concave portion and the second flange of the first top cover after the cable that electrically connects the battery and the electronic device passes through the concave portion.

### Claim 5 (depends on 2)

The battery box according to claim 2, wherein the lower box body further comprises a longitudinal beam, disposed in the first space and extending along the entire first space in a longitudinal direction; and traverse beams, disposed on two sides of the longitudinal beam in a transverse direction, wherein, in the transverse direction, one end of each traverse beam is hermetically connected to the longitudinal beam and the other end is hermetically connected to the first side wall and the second side wall, and in the height direction, two sides of each traverse beam are hermetically connected to the first top wall of the first top cover and the bottom wall of the lower box body, respectively; wherein the traverse beams and the longitudinal beam are cross arranged to split the first space into a plurality of subspaces, and the battery is accommodated in each subspace.

### Claim 6 (depends on 5)

The battery box according to claim 5, wherein
a height of the longitudinal beam is smaller than a height of the traverse beams, so that a cable that electrically connects the battery and the electronic device is arranged along a top surface of the longitudinal beam.

### Claim 7 (depends on 1)

The battery box according to claim 1, wherein the second top cover comprises a second top wall; a third side wall, connected to a periphery of the second top wall and extending to the lower box body; and a third flange, connected to an end of the third side wall and extending to outside of the second top cover, wherein the third flange of the second top cover is hermetically fastened to the first flange disposed on the second box part of the lower box body.