# US 11,999,246 B2 · Electrical energy storage system and a vehicle comprising such an electrical 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 11,999,246 B2 - Document ID: US11999246B2 - Status: Granted - Kind: B2 - Application number: 18/082,680 - Filed: 2022-12-16 - Published: 2023-06-22 - Granted: 2024-06-04 - Earliest claimed: 2021-12-17 - Assignees: Airbus SAS - Applicants: Airbus (S.A.S.) - Inventors: Alois Friedberger; Stephan Friedl - Web page: https://patentgrep.com/patent/US11999246B2 ## CPC - H01M 10/486: {for measuring temperature} - B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors} - B60L 50/70: using power supplied by fuel cells (in combination with batteries B60L50/75) - B60L 58/30: for monitoring or controlling fuel cells - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/509: characterised by the type of connection, e.g. mixed connections - H01M 50/519: comprising printed circuit boards [PCB] - H01M 50/526: having a layered structure - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - H02J 7/80: including monitoring or indicating arrangements - B60L 2200/10: Air crafts - B64D 27/357: using batteries - 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 - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electrical energy storage system includes electrochemical energy storage cells for collecting, supplying and storing electrical energy, a contacting device for contacting the energy storage cells, and temperature sensors for monitoring temperature of individual energy storage cells. The electrochemical energy storage cells include a first and second electrical terminal, the contacting device including conductors. A first contacting element connects the first electrical terminal of each cell and a first conductor of the contacting device. A second contacting element connects the second electrical terminal of each cell and a second conductor of the contacting device. The temperature sensors include a thermocouple having a first element from a first metal material and a second element from a second metal material. The first element is connected to one of the terminals or the body of the energy storage cell and the second element is connected to the first element or the body of the energy storage cell. ## Claims ### Claim 1 An electrical energy storage system, comprising: a plurality of electrochemical energy storage cells for collecting, supplying, and storing electrical energy; a contacting device for contacting the energy storage cells; and a plurality of temperature sensors for monitoring a temperature of individual energy storage cells; wherein the electrochemical energy storage cells each comprise a first electrical terminal and a second electrical terminal; wherein the contacting device comprises conductors; wherein a first contacting element connects the first electrical terminal of each cell and a first conductor of the contacting device, and wherein a second contacting element connects the second electrical terminal of each cell and a second conductor of the contacting device; wherein the temperature sensors each comprise a thermocouple having a first element from a first metal material and a second element from a second metal material; wherein the first element is directly connected to one of the terminals or a body of the energy storage cell and wherein the second element is directly connected to the first element or the body of the energy storage cell; wherein the first element and the second element are attached to the body of the energy storage cell in a distance to each other; and wherein the body of the energy storage cell is electrically conductive and constitutes a third element of the temperature sensor made from a third metal material. ### Claim 2 (depends on 1) The electrical energy storage system according to claim 1, wherein: the contacting device comprises a plurality of openings; head sides of the energy storage cells are disposed in individual openings of the contacting device; and the first contacting element and the second contacting element reach above the openings. ### Claim 3 (depends on 2) The electrical energy storage system according to claim 2, wherein: the contacting device comprises at least one printed circuit board; and the conductors comprise at least one conducting layer on at least one insulation layer. ### Claim 4 (depends on 1) The electrical energy storage system according to claim 1, wherein: the first element is realized by one of the first contacting element and the second contacting element; and the second element is directly attached to the first element. ### Claim 5 (depends on 4) The electrical energy storage system according to claim 4, wherein the first element is sandwiched between a respective electrical terminal and the second element directly on the respective electrical terminal. ### Claim 6 (depends on 1) The electrical energy storage system according to claim 1, wherein the body comprises the second electrical terminal. ### Claim 7 (depends on 6) The electrical energy storage system according to claim 6, wherein: the energy storage cells comprise a plurality of groups, each of the groups having a multitude of energy storage cells; the groups are interconnected in a serial connection; the energy storage cells inside the groups are interconnected in a parallel connection; and one measuring module is provided for each group and is connected to temperature sensors of a respective group. ### Claim 8 (depends on 7) The electrical energy storage system according to claim 7, wherein: each measuring module comprises a signal coupler; and the signal couplers of a plurality of measuring modules are connected to an evaluation unit or readout unit. ### Claim 9 (depends on 7) The electrical energy storage system according to claim 7, wherein: the contacting device comprises at least one printed circuit board; the conductors comprise at least one conducting layer on at least one insulation layer; the contacting device comprises a printed circuit board for each group; and the measuring module comprises an SMD component attached to or integrated into the respective printed circuit board. ### Claim 10 (depends on 6) The electrical energy storage system according to claim 6, wherein the measuring modules are directly connected to respective second elements of the temperature sensors through individual conductors and to a common electric potential of all first elements. ### Claim 11 (depends on 1) The electrical energy storage system according to claim 1, wherein the second element comprises an electrically insulating substrate having a coating of the second metal material. ### Claim 12 (depends on 1) The electrical energy storage system according to claim 1, wherein the first metal material and the second metal are distinct and selected from a group of materials consisting of copper (Cu), CuNi alloys, iron (Fe), steel, aluminum, cerium (Ce), NiCr alloys, and PtRh alloys. ### Claim 13 (depends on 1) The electrical energy storage system according to claim 1, wherein the electrical energy storage system is configured to conduct a self-test by: checking a connecting state between the first elements and respective second elements; or by evaluating a connecting state between the first element and a respective electrical terminal; or by comparing a temporal behavior of measured temperatures of at least a part of all temperature sensors to identify implausible results from a detached temperature sensor. ### Claim 14 (depends on 1) A vehicle comprising the electrical energy storage system according to claim 1.