# US 11,299,049 B2 · System and method for integration of redundant bus architecture into a power system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,299,049 B2 - Document ID: US11299049B2 - Status: Granted - Kind: B2 - Application number: 15/917,429 - Filed: 2018-03-09 - Published: 2019-07-11 - Granted: 2022-04-12 - Earliest claimed: 2017-03-10 - Assignees: Faraday & Future Inc. - Applicants: Faraday & Future Inc. - Inventors: John Steven Linehan; Steven E. Schulz; Michael Hong; Anil Paryani; Isaac Benjamin Meadows; Evan Roger Fischer - Web page: https://patentgrep.com/patent/US11299049B2 ## CPC - B60L 50/66: {Arrangements of batteries} - B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) - H02J 1/06: Two-wire DC power distribution systems - H02J 7/342: {The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68)} - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - B60L 2210/10: DC to DC converters - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/72: Electric energy management in electromobility - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The present disclosure relates to a vehicle power system. In some examples, the vehicle power system can include a plurality of redundant low-power buses coupled to respective low-power batteries. The low-power buses can be powered by a vehicle battery having a higher voltage than the voltage of the low-power batteries by way of a DCDC converter, for example. In some examples, the DCDC converter can be coupled to the low-power buses via a plurality of switches included in an Auxiliary Voltage Controller (AVC). The DCDC converter and the AVC can be housed in a common package to reduce the size, weight, and complexity of the power system while also improving the power system's durability. ## Claims ### Claim 1 A module comprising: a housing enclosing: a first controller comprising a plurality of switches; a DCDC converter operatively coupled to a first battery, and operatively coupled to a second battery and operatively coupled to a third battery via the plurality of switches of the first controller, the DCDC converter configured to: receive as an input a first voltage from the first battery; and output a second voltage to the controller, wherein: the first battery, the second battery, and the third battery are all external to the housing; and a second controller operatively coupled to an input/output port, the DCDC converter, and the first controller, the second controller configured to: receive a testing protocol from the input/output port; and execute the testing protocol on the DCDC converter and the second controller. ### Claim 2 (depends on 1) The module of claim 1, wherein the second battery and the third battery are rechargeable. ### Claim 3 (depends on 1) The module of claim 1, further comprising: a positive thermal coefficient device configured to operatively couple the second battery and the third battery so that a current can flow between the second battery and the third battery when the first battery is disconnected from the second battery and the third battery. ### Claim 4 (depends on 1) The module of claim 1, wherein the plurality of switches each comprise a metal-oxide-semiconductor field-effect transistor (MOSFET). ### Claim 5 (depends on 1) The module of claim 1, wherein the plurality of switches each comprise a plurality of MOSFETs coupled in parallel. ### Claim 6 (depends on 1) The module of claim 1, wherein the second battery and the third battery are operatively coupled to a plurality of electronic components so that each electronic component can receive power from one or more of the second battery and the third battery. ### Claim 7 (depends on 1) The module of claim 1, wherein the second battery and the third battery have the second voltage. ### Claim 8 A vehicle comprising: one or more electronic components; an electric motor; and a power system comprising: a first battery having a first voltage; a second battery having a second voltage less than the first voltage; a third battery having the second voltage a first controller comprising a plurality of switches; and a DCDC converter operatively coupled to the first battery, and operatively coupled to the second battery and the third battery via the plurality of switches of the controller, the DCDC converter configured to: receive as an input the first voltage from the first battery; and output the second voltage to the controller; and a second controller operatively coupled to an input/output port, the DCDC converter, and the first controller, the second controller configured to: receive a testing protocol from the input/output port; and execute the testing protocol on the DCDC converter and the second controller; wherein: the DCDC converter, the first controller, and the second controller are housed in a shared package, the one or more electronic components are powered by one or more of the second battery and the third battery, and the electric motor is powered by the first battery.