# US 12,603,379 B2 · Energy storage system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,603,379 B2 - Document ID: US12603379B2 - Status: Granted - Kind: B2 - Application number: 18/095,948 - Filed: 2023-01-11 - Published: 2023-07-27 - Granted: 2026-04-14 - Earliest claimed: 2022-01-21 - Assignees: Contemporary Amperex Technology (Hong Kong) Limited - Applicants: Contemporary Amperex Technology (Hong Kong) Limited - Inventors: Yue Liu; Zengzhong Wang; Chenling Zheng - Web page: https://patentgrep.com/patent/US12603379B2 ## CPC - H01M 50/325: comprising deformable valve members, e.g. elastic or flexible valve members - H01M 10/658: by thermal insulation or shielding - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/271: Lids or covers for the racks or secondary casings - H01M 50/30: Arrangements for facilitating escape of gases - H01M 50/333: Spring-loaded vent valves - H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member} - H01M 50/383: Flame arresting or ignition-preventing means - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - 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 an energy storage system, including a first shell, a battery pack, a sealing member, a first explosion-proof valve and a second explosion-proof valve. The battery pack is arranged inside the first shell and includes a second shell and a battery. The sealing member is arranged between the first shell and the second shell, and a space between the first shell and the second shell is fluidly isolated from an inner space of the sealing member. The first explosion-proof valve is mounted on the second shell to communicate with an inner space of the second shell and the inner space of the sealing member when the first explosion-proof valve is opened. The second explosion-proof valve is mounted on the first shell to communicate with the inner space of the sealing member and an outer space of the first shell when the second explosion-proof valve is opened. ## Claims ### Claim 1 An energy storage system, comprising: a first shell; a battery pack, arranged inside the first shell, wherein the battery pack comprises a second shell and a battery arranged in the second shell; a sealing member, arranged between the first shell and the second shell, wherein a space between the first shell and the second shell is fluidly isolated from an inner space of the sealing member; a first explosion-proof valve, mounted on the second shell to communicate with an inner space of the second shell and the inner space of the sealing member when the first explosion-proof valve is opened; a second explosion-proof valve, mounted on the first shell to communicate with the inner space of the sealing member and an outer space of the first shell when the second explosion-proof valve is opened; and a first thermal insulation member, wherein the first thermal insulation member is mounted on an inner wall of the first shell, and the sealing member passes through the first thermal insulation member. ### Claim 2 (depends on 1) The energy storage system according to claim 1, wherein the second explosion-proof valve is configured to be opened when a pressure of the inner space of the sealing member is greater than an opening pressure of the second explosion-proof valve. ### Claim 3 (depends on 2) The energy storage system according to claim 2, further comprising a connecting member, wherein the connecting member is connected between the first explosion-proof valve and the second explosion-proof valve, and the second explosion-proof valve is linked with the first explosion-proof valve. ### Claim 4 (depends on 1) The energy storage system according to claim 1, further comprising a connecting member, wherein the connecting member is connected between the first explosion-proof valve and the second explosion-proof valve, and the second explosion-proof valve is linked with the first explosion-proof valve. ### Claim 5 (depends on 4) The energy storage system according to claim 4, wherein the first explosion-proof valve comprises a first valve body and a first valve core; when the first explosion-proof valve is in an opening state, the first valve core moves relative to the first valve body to communicate with the inner space of the second shell and the inner space of the sealing member; the second explosion-proof valve comprises a second valve body and a second valve core; when the second explosion-proof valve is in an opening state, the second valve core moves relative to the second valve body to communicate with the inner space of the sealing member and the outer space of the first shell; and the connecting member is connected between the first valve core and the second valve core. ### Claim 6 (depends on 4) The energy storage system according to claim 4, wherein the connecting member comprises a rigid rod. ### Claim 7 (depends on 5) The energy storage system according to claim 5, wherein the connecting member comprises a rigid rod. ### Claim 8 (depends on 1) The energy storage system according to claim 1, further comprising a first sealing gasket arranged between the first explosion-proof valve and the second shell and a second sealing gasket arranged between the second explosion-proof valve and the first shell. ### Claim 9 (depends on 2) The energy storage system according to claim 2, further comprising a first sealing gasket arranged between the first explosion-proof valve and the second shell and a second sealing gasket arranged between the second explosion-proof valve and the first shell. ### Claim 10 (depends on 3) The energy storage system according to claim 3, further comprising a first sealing gasket arranged between the first explosion-proof valve and the second shell and a second sealing gasket arranged between the second explosion-proof valve and the first shell. ### Claim 11 (depends on 5) The energy storage system according to claim 5, further comprising a first sealing gasket arranged between the first explosion-proof valve and the second shell and a second sealing gasket arranged between the second explosion-proof valve and the first shell. ### Claim 12 (depends on 6) The energy storage system according to claim 6, further comprising a first sealing gasket arranged between the first explosion-proof valve and the second shell and a second sealing gasket arranged between the second explosion-proof valve and the first shell. ### Claim 13 (depends on 1) The energy storage system according to claim 1, further comprising a second thermal insulation member, wherein a thickness of the first thermal insulation member is smaller than a distance between the first shell and the second shell, and the second thermal insulation member is arranged on an outer periphery of the sealing member and is located between the first thermal insulation member and the second shell. ### Claim 14 (depends on 13) The energy storage system according to claim 13, wherein a hardness of the second thermal insulation member is smaller than a hardness of the first thermal insulation member. ### Claim 15 (depends on 13) The energy storage system according to claim 13, wherein the first thermal insulation member comprises a rock wool, and/or the second thermal insulation member comprises a thermal insulation foam.