# US 12,119,684 B2 · Battery pack, treatment system and method for the production of a battery pack > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,684 B2 - Document ID: US12119684B2 - Status: Granted - Kind: B2 - Application number: 16/869,824 - Filed: 2020-05-08 - Published: 2020-11-12 - Granted: 2024-10-15 - Earliest claimed: 2019-05-10 - Assignees: Andreas Stihl AG & Co. KG; Murata Manufacturing Co., Ltd. - Applicants: Andreas Stihl AG & Co. KG; Murata Manufacturing Co., Ltd. - Inventors: Daniel Sauerteig; Julien Scholl; Kenichi Ozawa; Takayuki Sato; Daiki Misawa; Daniel Wagner; Marcel Wilka; Martin Schurr; Uwe Bossmann; Dirk Liepold - Web page: https://patentgrep.com/patent/US12119684B2 ## CPC - H02J 7/575: {Parallel/serial switching of connection of batteries to charge or load circuit} - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 10/486: {for measuring temperature} - H01M 10/613: Cooling or keeping cold - H01M 10/63: Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 50/178: for pouch or flexible bag cells - H01M 50/211: adapted for pouch cells - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543) - H01M 50/519: comprising printed circuit boards [PCB] - H01M 50/55: on the same side of the cell - H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells - H01M 50/557: Plate-shaped terminals - H01M 10/0436: {Small-sized flat cells or batteries for portable equipment} - H01M 10/6235: Power tools - H01M 50/48: characterised by the material - H01M 50/516: by welding, soldering or brazing - H01M 50/566: by welding, soldering or brazing - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - 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 A battery pack supplies an electrically driven treatment apparatus with an electric driving power and includes a plurality of accumulator cells having cell contacts; at least one circuit board electrically connected to the cell contacts; and a battery pack housing having a first battery pack housing part and a second battery pack housing part. The first battery pack housing part and the second battery pack housing part are closed by each other. The accumulator cells are disposed within the battery pack housing. The cell contacts and the circuit board are disposed within the second battery pack housing part. The second battery pack housing part is configured as a mold for a casting compound, and the cell contacts and the at least one circuit board are enclosed by the casting compound. ## Claims ### Claim 1 A battery pack for supplying an electrically driven treatment apparatus with an electric driving power, the battery pack comprising: a plurality of accumulator cells having cell contacts; at least one circuit board electrically connected to the cell contacts; and a battery pack housing, wherein the battery pack housing has a first battery pack housing part and a second battery pack housing part, the first battery pack housing part and the second battery pack housing part are closed by each other, the accumulator cells are disposed within the battery pack housing, the cell contacts and the at least one circuit board are disposed within the second battery pack housing part, and the battery pack housing is configured to protect the accumulator cells and the at least one circuit board from physical contact wherein the second battery pack housing part is configured as a mold for a casting compound, the cell contacts and the at least one circuit board are enclosed by the casting compound, the accumulator cells have cell shells, the casting compound reaches at least up to the cell shells, the accumulator cells are pouch cells, the cell contacts are cell tabs, and the cell shells are partially not enclosed by the casting compound to allow gas to escape from the cell shells. ### Claim 2 (depends on 1) The battery pack according to claim 1, wherein the first battery pack housing part is a housing container, and the second battery pack housing part is a housing cover. ### Claim 3 (depends on 1) The battery pack according to claim 1, wherein at least one of: the casting compound reaches up to an end adjacent to the first battery pack housing part of the second battery pack housing part, or the casting compound reaches at least up to an end adjacent to the second battery pack housing part of the first battery pack housing part. ### Claim 4 (depends on 1) The battery pack according to claim 1, wherein the cell contacts and the at least one circuit board are enclosed by the casting compound in a common casting block. ### Claim 5 (depends on 1) The battery pack according to claim 1, wherein the accumulator cells are configured and disposed in a cell block such that the cell contacts are disposed on a common contact side of the cell block. ### Claim 6 (depends on 5) The battery pack according to claim 5, wherein the at least one circuit board is disposed on the contact side. ### Claim 7 (depends on 1) The battery pack according to claim 1, wherein at least one of: the at least one circuit board holds measurement electronics, wherein the measurement electronics are configured for measuring properties of the accumulator cells, the at least one circuit board holds power electronics, wherein the power electronics are configured for controlling output of the electric driving power from the battery pack and/or an input of electric charging power to the battery pack, or the at least one circuit board holds user interface electronics, wherein the user interface electronics are configured for interaction with a user, and/or holds transmission electronics, wherein the transmission electronics are configured for wireless transmission of at least one operating parameter and/or operating condition. ### Claim 8 (depends on 1) The battery pack according to claim 1, the battery pack further comprising: a plurality of battery pack contacts, wherein the battery pack contacts are configured for electrical connection of the battery pack and the treatment apparatus together for supplying the treatment apparatus with the electric driving power from the battery pack and disposed on an end remote from the second battery pack housing part of the first battery pack housing part. ### Claim 9 (depends on 1) The battery pack according to claim 1, wherein the first battery pack housing part has a number of air openings, and the number of air openings are disposed on an end adjacent to the second battery pack housing part of the first battery pack housing part. ### Claim 10 (depends on 1) The battery pack according to claim 1, wherein at least one of: the battery pack has a maximum electric driving power of a minimum of 1 kW and/or of a maximum of 10 kW, the battery pack has a nominal voltage of a minimum of 10 V and/or of a maximum of 100 V, the battery pack has a maximum energy content of a minimum of 100 Wh and/or of a maximum of 1000 Wh, the battery pack has a mass of a minimum of 0.5 kg and/or of a maximum of 10 kg, or the battery pack has a height of a minimum of 2.5 cm and/or of a maximum of 10 cm, a width of a minimum of 5 cm and/or of a maximum of 20 cm, and a depth of a minimum of 7.5 cm and/or of a maximum of 30 cm. ### Claim 11 (depends on 1) A treatment system, comprising: a battery pack according to claim 1, and an electrically driven treatment apparatus, wherein the battery pack and the treatment apparatus are configured for electrical connection with each other for supplying the treatment apparatus with electric driving power from the battery pack. ### Claim 12 (depends on 1) A method for producing the battery pack of claim 1 for supplying an electrically driven treatment apparatus with electric driving power, the method comprising the steps of: a) disposing cell contacts of the plurality of accumulator cells and the at least one circuit board electrically connected to the cell contacts, within the second battery pack housing part of the battery pack housing, wherein the second battery pack housing part is configured as a mold for the casting compound, the accumulator cells have cell shells, the accumulator cells are pouch cells, and the cell contacts are cell tabs; b) enclosing the cell contacts and the at least one circuit board by the casting compound, wherein the casting compound reaches at least up to the cell shells; and c) disposing the accumulator cells within the battery pack housing and closing the second battery pack housing part and the first battery pack housing part of the battery pack housing by each other. ### Claim 13 (depends on 12) The method according to claim 12, wherein the step c) comprises: disposing and closing while the casting compound is in a liquid state; and the method further comprises: d) hardening the casting compound in a solid state. ### Claim 14 A battery pack for supplying an electrically driven treatment apparatus with an electric driving power, the battery pack comprising: a plurality of accumulator cells having cell contacts; at least one circuit board electrically connected to the cell contacts; and a battery pack housing, wherein the battery pack housing has a first battery pack housing part and a second battery pack housing part, the first battery pack housing part and the second battery pack housing part are closed by each other, and the accumulator cells are disposed within the battery pack housing and the at least one circuit board is disposed within the battery pack housing, wherein the second battery pack housing part is a housing cover, the second battery pack housing part having at least one thread, the first battery pack housing part is a housing container, the first battery pack housing part having at least one head abutment surface, the head abutment surface is disposed on an end adjacent to and within 20 millimeters or less of the second battery pack housing part, the battery pack has at least one screw, the screw is screwed into the thread for mechanical connection of the second battery pack housing part and the first battery pack housing part to each other, a screw head bears on the head abutment surface, the first battery pack housing part has at least one groove to guide the battery pack in mechanical connection to the treatment apparatus, and the groove extends on the head abutment surface in prolongation of the thread. ### Claim 15 (depends on 14) A treatment system, comprising: a battery pack according to claim 14, and an electrically driven treatment apparatus, wherein the battery pack and the treatment apparatus are configured for electrical connection with each other for supplying the treatment apparatus with electric driving power from the battery pack.