# US 10,873,062 B2 · Rechargeable battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,062 B2 - Document ID: US10873062B2 - Status: Granted - Kind: B2 - Application number: 14/485,338 - Filed: 2014-09-12 - Published: 2015-03-19 - Granted: 2020-12-22 - Earliest claimed: 2013-09-16 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Wolf Zahn - Web page: https://patentgrep.com/patent/US10873062B2 ## CPC - H01M 10/613: Cooling or keeping cold - H01M 10/6235: Power tools - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/6551: Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings - H01M 10/6554: Rods or plates - H01M 10/6563: with forced flow, e.g. by blowers - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/247: specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers - H01M 50/291: characterised by their shape - H01M 10/643: Cylindrical cells - 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 A rechargeable battery, in particular a rechargeable battery for a power tool, which includes a cell block having a sealing device provided for closing the cell block in at least a dust-proof and/or water-proof manner, and which includes an external rechargeable battery housing. It is provided that the external rechargeable battery housing is provided for conducting an airflow along between the external rechargeable battery housing and the sealing device. ## Claims ### Claim 1 A rechargeable battery, comprising: a cell block having a sealing device to close the cell block at least in one of a dust-proof manner and a water-proof manner; an external rechargeable battery housing, wherein the external rechargeable battery housing is configured to conduct an airflow along between the external rechargeable battery housing and the sealing device; and a rechargeable battery cooling device to cool the cell block essentially independently of an airflow, wherein the rechargeable battery cooling device includes: at least one heat dissipating arrangement situated in the cell block configured for dissipating heat from the cell block, and a heat radiating arrangement configured for at least radiating the heat dissipated by the at least one heat dissipating arrangement, wherein, in at least one operating state of the rechargeable battery, the airflow is configured to exit at least through an opening of the external rechargeable battery housing through which a contact of a tool interface is contactable, wherein the tool interface is configured to establish a mechanical and an electrical connection with a power tool, wherein the sealing device has a sealing film which surrounds the cell block on at least one plane and lies against the cell block on at least four sides, wherein the at least one heat dissipating arrangement and the heat radiating arrangement are connected to one another by screws, wherein the screws press the at least one heat dissipating arrangement and the heat radiating arrangement from two different sides against the sealing film causing the at least one heat dissipating arrangement and the heat radiating arrangement to lie flush against the sealing film. ### Claim 2 (depends on 1) The rechargeable battery of claim 1, wherein the external rechargeable battery housing delimits an airflow opening, which is for conducting the airflow into the external rechargeable battery housing. ### Claim 3 (depends on 1) The rechargeable battery of claim 1, wherein the external rechargeable battery housing is for conducting the airflow out through at least one housing gap of the external rechargeable battery housing. ### Claim 4 (depends on 1) The rechargeable battery of claim 1, wherein the sealing device includes a sealing film which encloses the cell block in at least one plane. ### Claim 5 (depends on 1) The rechargeable battery of claim 1, wherein the rechargeable battery is a rechargeable battery for the power tool. ### Claim 6 (depends on 1) The rechargeable battery of claim 1, wherein a housing of the cell block includes openings that are closed with a water-proof, breathable diaphragm. ### Claim 7 (depends on 1) The rechargeable battery of claim 1, wherein the sealing film is self-shrinking. ### Claim 8 (depends on 1) The rechargeable battery of claim 1, wherein the sealing film lies directly flush against the at least one heat dissipating arrangement. ### Claim 9 A system, comprising: a rechargeable battery charger; and a rechargeable battery, including: a cell block having a sealing device to close the cell block at least in one of a dust-proof manner and a water-proof manner; an external rechargeable battery housing, wherein the external rechargeable battery housing is configured to conduct an airflow along between the external rechargeable battery housing and the sealing device; and a rechargeable battery cooling device to cool the cell block essentially independently of the airflow, wherein the rechargeable battery cooling device includes: at least one heat dissipating arrangement situated in the cell block configured for dissipating heat from the cell block, and a heat radiating arrangement configured for at least radiating the heat dissipated by the at least one heat dissipating arrangement, wherein, in at least one operating state of the rechargeable battery, the airflow is configured to exit at least through an opening of the external rechargeable battery housing through which a contact of a tool interface is contactable, wherein the tool interface is configured to establish a mechanical and an electrical connection with a power tool, wherein the at least one heat dissipating arrangement and the heat radiating arrangement are connected to one another by screws, wherein the screws press the at least one heat dissipating arrangement and the heat radiating arrangement from two different sides against the sealing device causing the at least one heat dissipating arrangement and the heat radiating arrangement to lie flush against the sealing device. ### Claim 10 (depends on 9) The system of claim 9, wherein the rechargeable battery charger includes charger electronics and a charger cooling device, which is for employing the airflow conducted through the rechargeable battery at least partially for cooling the charger electronics. ### Claim 11 (depends on 10) The system of claim 10, wherein the charger cooling device includes a ventilator to generate the airflow. ### Claim 12 (depends on 9) The system of claim 9, wherein a housing of the cell block includes openings that are closed with a water-proof, breathable diaphragm. ### Claim 13 A rechargeable battery, comprising: a cell block having a sealing device to close the cell block at least in one of a dust-proof manner and a water-proof manner; an external rechargeable battery housing, wherein the external rechargeable battery housing is configured to conduct an airflow along between the external rechargeable battery housing and the sealing device; and a rechargeable battery cooling device to cool the cell block essentially independently of an airflow, wherein the rechargeable battery cooling device includes: at least one heat dissipating arrangement situated in the cell block configured for dissipating heat from the cell block, and a heat radiating arrangement configured for at least radiating the heat dissipated by the at least one heat dissipating arrangement, wherein a tool interface is configured to establish a mechanical and an electrical connection with a power tool, wherein the sealing device has a sealing film which surrounds the cell block on at least one plane and lies against the cell block on at least four sides, wherein the at least one heat dissipating arrangement and the heat radiating arrangement are connected to one another by screws, wherein the screws press the at least one heat dissipating arrangement and the heat radiating arrangement from two different sides against the sealing film causing the at least one heat dissipating arrangement and the heat radiating arrangement to lie flush against the sealing film.