# US 11,077,754 B2 · In-vehicle control apparatus and program > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,754 B2 - Document ID: US11077754B2 - Status: Granted - Kind: B2 - Application number: 16/829,150 - Filed: 2020-03-25 - Published: 2020-10-01 - Granted: 2021-08-03 - Earliest claimed: 2019-03-26 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Jiro Fukui - Web page: https://patentgrep.com/patent/US11077754B2 ## CPC - B60L 3/003: {relating to inverters} - B60L 3/04: Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) - B60L 3/0023: {Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train} - H02M 5/4585: {having a rectifier with controlled elements} - H02M 7/219: in a bridge configuration - H02M 7/53871: {with automatic control of output voltage or current} - H02P 5/74: controlling two or more AC dynamo-electric motors (H02P5/46, H02P5/60 take precedence) - H02P 29/024: Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load - B60K 1/02: comprising more than one electric motor - B60L 2210/10: DC to DC converters - B60L 2210/40: DC to AC converters - B60L 2220/42: with use of more than one motor - H02M 1/007: {Plural converter units in cascade (push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826)} - H02M 1/325: {with means for allowing continuous operation despite a fault, i.e. fault tolerant converters} - H02P 2201/07: DC-DC step-up or step-down converter inserted between the power supply and the inverter supplying the motor, e.g. to control voltage source fluctuations, to vary the motor speed - Y02T 10/64: Electric machine technologies in electromobility - 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 - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An in-vehicle control apparatus includes: a first inverter; a second inverter; and a voltage conversion part configured to increase or decrease an operation voltage of one of the first inverter and the second inverter by an open-close control of a switch and supply the increased or decreased operation voltage as an operation voltage of another of the first inverter and the second inverter. The voltage conversion part includes: a reference voltage line; a low-voltage-side switch that is connected to and between the reference voltage line and a high-voltage-side power line of the second inverter; and a high-voltage-side switch that is connected to and between a high-voltage-side power line of the first inverter and a high-voltage-side power line of the second inverter. The in-vehicle control apparatus includes: a detection part that detects a short circuit failure of the low-voltage-side switch; and a control part that performs a phase short circuit control that short-circuits at least one of a plurality of low-voltage-side switches and a plurality of high-voltage-side switches of the second inverter upon detection of a short circuit failure of the low-voltage-side switch by the detection part. ## Claims ### Claim 1 An in-vehicle control apparatus, comprising: a first inverter that drives a first motor for driving a vehicle; a second inverter that drives a second motor for driving the vehicle; and a voltage conversion part connected to and between the first inverter and the second inverter and configured to increase or decrease an operation voltage of one of the first inverter and the second inverter by an open-close control of a switch and supply the increased or decreased operation voltage as an operation voltage of another of the first inverter and the second inverter, wherein the voltage conversion part comprises: a reference voltage line that connects a low-voltage-side power line of the first inverter to a low-voltage-side power line of the second inverter; a low-voltage-side switch that is connected to and between the reference voltage line and a high-voltage-side power line of the second inverter; and a high-voltage-side switch that is connected to and between a high-voltage-side power line of the first inverter and the high-voltage-side power line of the second inverter, and the in-vehicle control apparatus comprises: a detection part that detects a short circuit failure of the low-voltage-side switch; and a control part that performs a phase short circuit control that short-circuits at least one of a plurality of low-voltage-side switches and a plurality of high-voltage-side switches of the second inverter upon detection of the short circuit failure of the low-voltage-side switch by the detection part. ### Claim 2 (depends on 1) The in-vehicle control apparatus according to claim 1, wherein the control part performs the phase short circuit control prior to a stop control that stops the vehicle upon detection of a short circuit failure of the high-voltage-side switch by the detection part. ### Claim 3 (depends on 1) The in-vehicle control apparatus according to claim 1, wherein the detection part is configured as a device having a separate body from the second inverter. ### Claim 4 (depends on 2) The in-vehicle control apparatus according to claim 2, wherein the detection part is configured as a device having a separate body from the second inverter. ### Claim 5 A non-transitory computer-readable recording medium including a program that causes a computer of an in-vehicle control apparatus, comprising: a first inverter that drives a first motor for driving a vehicle; a second inverter that drives a second motor for driving the vehicle; and a voltage conversion part that is connected to and between the first inverter and the second inverter and comprises a reference voltage line that connects a low-voltage-side power line of the first inverter to a low-voltage-side power line of the second inverter, a low-voltage-side switch that is connected to and between the reference voltage line and a high-voltage-side power line of the second inverter, and a high-voltage-side switch that is connected to and between a high-voltage-side power line of the first inverter and a high-voltage-side power line of the second inverter, the voltage conversion part being configured to increase or decrease an operation voltage of one of the first inverter and the second inverter by an open-close control of a switch and supply the increased or decreased operation voltage as an operation voltage of another of the first inverter and the second inverter, to execute: a detection step of detecting a short circuit failure of the low-voltage-side switch; and a control step of performing a phase short circuit control that short-circuits at least one of a plurality of low-voltage-side switches and a plurality of high-voltage-side switches of the second inverter upon detection of a short circuit failure of the low-voltage-side switch in the detection step.