# US 12,183,943 B2 · Battery, power consumption device, method and device for preparing a battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,943 B2 - Document ID: US12183943B2 - Status: Granted - Kind: B2 - Application number: 17/113,042 - Filed: 2020-12-05 - Published: 2022-01-13 - Granted: 2024-12-31 - Earliest claimed: 2020-07-10 - Assignees: Contemporary Amperex Technology (Hong Kong) Limited - Applicants: Contemporary Amperex Technology (Hong Kong) Limited - Inventors: Chengdu Liang; Xiaobo Chen; Yao Li; Wei Wang; Yuepan Hou; Peng Wang; Yongshou Lin - Web page: https://patentgrep.com/patent/US12183943B2 ## CPC - H01M 50/3425: {in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member} - H01M 10/613: Cooling or keeping cold - H01M 10/625: Vehicles - H01M 10/63: Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) - H01M 10/655: Solid structures for heat exchange or heat conduction - H01M 10/6552: Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/375: Vent means sensitive to or responsive to temperature - H01M 50/383: Flame arresting or ignition-preventing means - H01M 2200/10: Temperature sensitive devices - H01M 2200/20: Pressure-sensitive devices - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - 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 - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract Embodiments of the present application provide a battery. The battery includes: a battery cell comprising a pressure relief mechanism, at least a portion of the pressure relief mechanism protruding outward from a first wall of the battery cell, and the pressure relief mechanism being configured, when an internal pressure or temperature of the battery cell reaches a threshold, to be actuated to release the internal pressure; a thermal management component for containing a fluid to adjust a temperature of the battery cell; wherein a first surface of thermal management component is attached to the first wall of the battery cell, the first surface of thermal management component is provided with an avoidance chamber, and the avoidance chamber is configured to accommodate the at least portion of the pressure relief mechanism. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced. ## Claims ### Claim 1 A battery, comprising: a battery cell comprising a pressure relief mechanism, at least a portion of the pressure relief mechanism protruding outward from a first wall of the battery cell, and the pressure relief mechanism being configured, when an internal pressure or temperature of the battery cell reaches a threshold, to be actuated to release the internal pressure; and a thermal management component for containing a fluid to adjust a temperature of the battery cell; wherein a first surface of thermal management component is attached to the first wall of the battery cell, the first surface of thermal management component is provided with an avoidance chamber, and the avoidance chamber is configured to accommodate the at least portion of the pressure relief mechanism; wherein the thermal management component is configured to be capable of being damaged by the emissions when the pressure relief mechanism is actuated; wherein a bottom wall of the avoidance chamber is provided with a weakened zone, and the weakened zone is configured to be capable of being damaged by emissions discharged from the battery cell when the pressure relief mechanism is actuated, so that the emissions pass through the weakened zone; and wherein the weakened zone has a thickness less than or equal to 3 mm. ### Claim 2 (depends on 1) The battery according to claim 1, wherein a portion of the first wall around the pressure relief mechanism protrudes outward, and the avoidance chamber is further configured to accommodate an outward protruding portion of the first wall around the pressure relief mechanism. ### Claim 3 (depends on 1) The battery according to claim 1, wherein the avoidance chamber is configured to provide a deformation space for the pressure relief mechanism, so that the pressure relief mechanism is deformed toward thermal management component and fractured. ### Claim 4 (depends on 3) The battery according to claim 3, wherein a depth of the avoidance chamber is related to a dimension of the pressure relief mechanism; and the avoidance chamber has a depth of more than 1 mm. ### Claim 5 (depends on 1) The battery according to claim 1, wherein the weakened zone has a lower melting point than the rest of the thermal management component and a material of the weakened zone has a melting point below 400° C. ### Claim 6 (depends on 1) The battery according to claim 1, wherein the thermal management component comprises a first thermally conductive plate and a second thermally conductive plate, the first thermally conductive plate is located between the first wall and the second thermally conductive plate and attached to the first wall, a first region of the first thermally conductive plate is recessed toward the second thermally conductive plate to form the avoidance chamber, and the first region is connected to the second thermally conductive plate. ### Claim 7 (depends on 6) The battery according to claim 6, wherein the first region is provided with a through hole, and a radial dimension of the through hole is smaller than that of the avoidance chamber. ### Claim 8 (depends on 7) The battery according to claim 7, wherein a thickness of the second thermally conductive plate corresponding to the through hole is less than that of the second thermally conductive plate in other regions. ### Claim 9 (depends on 1) The battery according to claim 1, wherein a portion of thermal management component around the avoidance chamber can be damaged by emissions discharged from the battery cell, so that the fluid is discharged from inside of thermal management component. ### Claim 10 (depends on 9) The battery according to claim 9, wherein a side surface of the avoidance chamber can be damaged by the emissions, so that the fluid is discharged from the inside of thermal management component. ### Claim 11 (depends on 10) The battery according to claim 10, wherein a radial dimension of the avoidance chamber gradually decreases in a direction away from the pressure relief mechanism. ### Claim 12 (depends on 1) The battery according to claim 1, wherein a second wall of the battery cell is provided with an electrode terminal, and the second wall is different from the first wall. ### Claim 13 (depends on 12) The battery according to claim 12, wherein the second wall is arranged opposite to the first wall. ### Claim 14 (depends on 1) The battery according to claim 1, wherein the pressure relief mechanism is a temperature-sensitive pressure relief mechanism, and the temperature-sensitive pressure relief mechanism is configured to be capable of being melted when an internal temperature of the battery cell reaches a threshold; and/or the pressure relief mechanism is a pressure-sensitive pressure relief mechanism, and the pressure-sensitive pressure relief mechanism is configured to be capable of being fractured when an internal pressure of the battery cell reaches a threshold. ### Claim 15 (depends on 1) The battery according to claim 1, wherein the battery further comprises: an electrical chamber for accommodating a plurality of the battery cells; and a collection chamber configured to collect emissions discharged from the battery cells when the pressure relief mechanism is actuated, wherein the thermal management component is configured to isolate the electrical chamber from the collection chamber. ### Claim 16 (depends on 15) The battery according to claim 15, wherein the thermal management component has a wall shared by the electrical chamber and the collection chamber. ### Claim 17 (depends on 15) The battery according to claim 15, wherein the battery further comprises: a protective member, the protective member being configured to protect the thermal management component, and the protective member and the thermal management component forming the collection chamber. ### Claim 18 (depends on 16) The battery according to claim 16, wherein the emissions pass through thermal management component and enter the collection chamber. ### Claim 19 A power consumption device, comprising a battery; wherein the battery comprises: a battery cell comprising a pressure relief mechanism, at least a portion of the pressure relief mechanism protruding outward from a first wall of the battery cell, and the pressure relief mechanism being configured, when an internal pressure or temperature of the battery cell reaches a threshold, to be actuated to release the internal pressure; and a thermal management component for containing a fluid to adjust a temperature of the battery cell; wherein a first surface of thermal management component is attached to the first wall of the battery cell, the first surface of thermal management component is provided with an avoidance chamber, and the avoidance chamber is configured to accommodate the at least portion of the pressure relief mechanism; wherein the thermal management component is configured to be capable of being damaged by the emissions when the pressure relief mechanism is actuated; wherein a bottom wall of the avoidance chamber is provided with a weakened zone, and the weakened zone is configured to be capable of being damaged by emissions discharged from the battery cell when the pressure relief mechanism is actuated, so that the emissions pass through the weakened zone; and wherein the weakened zone has a thickness less than or equal to 3 mm.