# US 2014/0156130 A1 · Control apparatus of electrically-driven vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0156130 A1 - Document ID: US20140156130A1 - Status: Published application - Kind: A1 - Application number: 14/131,307 - Filed: 2011-10-26 - Published: 2014-06-05 - Earliest claimed: 2011-10-26 - Assignees: Mitsubishi Electric Corporation - Inventors: Yasufumi Ogawa; Keiichi Enoki; Takuya Tamura - Web page: https://patentgrep.com/patent/US20140156130A1 ## CPC - B60L 58/15: Preventing overcharging - B60L 3/04: Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) - B60L 7/003: {Dynamic electric braking by short circuiting the motor} - B60L 15/20: for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed - H02P 3/22: by short-circuit or resistive braking - H02H 7/122: for inverters, i.e. DC/AC converters - H02P 2101/45: for motor vehicles, e.g. car alternators - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/72: Electric energy management in electromobility - Y10S 903/903: having energy storing means, e.g. battery, capacitor - 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 - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - H02H: EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R31/00, G08B; locating faults along lines G01R31/08; emergency protective devices H01H) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A control apparatus of an electrically-driven vehicle controls an electrically-driven vehicle including a motor transmitting a drive force to wheels, an inverter driving the motor, and a battery supplying power to the inverter. The control apparatus includes battery storage amount estimation means for estimating a storage amount of the battery and motor rotation speed detection means for detecting a rotation speed of the motor. Output terminals of the inverter are short-circuited when the rotation speed of the motor reaches or exceeds a predetermined rotation speed while the storage amount estimated by the battery storage amount estimation means is equal to or greater than a predetermined amount. ## Claims ### Claim at position 1 1-6. (canceled) ### Claim 7 A control apparatus of an electrically-driven vehicle controlling an electrically-driven vehicle that includes a motor transmitting a drive force to wheels, an inverter driving the motor, and a battery supplying power to the inverter, the control apparatus being characterized by including: battery storage amount estimation means for estimating a storage amount of the battery; and motor rotation speed detection means for detecting a rotation speed of the motor, wherein output terminals of the inverter are short-circuited when the rotation speed of the motor reaches or exceeds a predetermined rotation speed while the storage amount estimated by the battery storage amount estimation means is equal to or greater than a predetermined amount. ### Claim 8 (depends on 7) The control apparatus of an electrically-driven vehicle according to claim 7, characterized by including: battery temperature measurement means for measuring a temperature of the battery, wherein the predetermined rotation speed is changed in response to the temperature of the battery. ### Claim 9 (depends on 7) The control apparatus of an electrically-driven vehicle according to claim 7, characterized by including: charging current estimation means for estimating a current value to be charged to the batter on the basis of the rotation speed of the motor and the storage amount of the battery; battery temperature measurement means for measuring a temperature of the battery; and charging current upper limit setting means for setting an upper limit value of the current to be charged to the battery on the basis of the storage amount of the battery and the temperature of the battery, wherein the output terminals of the inverter are short-circuited when a value of the charging current estimated by the charging current estimation means is greater than the upper limit value set by the charging current upper limit setting means. ### Claim 10 (depends on 7) The control apparatus of an electrically-driven vehicle according to claim 7, characterized by including: charging current estimation means for estimating a current value to be charged to the batter on the basis of the rotation speed of the motor and the storage amount of the battery; battery temperature measurement means for measuring a temperature of the battery; and charging current upper limit setting means for setting an upper limit value of the current to be charged to the battery on the basis of the storage amount of the battery and the temperature of the battery, wherein the output terminals of the inverter are short-circuited when a value of the charging current estimated by the charging current estimation means is greater than the upper limit value set by the charging current upper limit setting means, and the predetermined rotation speed is changed in response to the temperature of the battery. ### Claim 11 (depends on 7) The control apparatus of an electrically-driven vehicle according to claim 7, characterized by including: a connection device that turns ON and OFF a connection of the battery and the inverter, wherein the connection device is switched OFF after an elapse of a predetermined time since the output terminals of the inverter are short-circuited. ### Claim 12 (depends on 7) The control apparatus of an electrically-driven vehicle according to claim 7, characterized by including: a connection device that turns ON and OFF a connection of the battery and the inverter; and rotor temperature estimation means for estimating a rotor temperature of the motor, wherein the connection device is switched OFF after an elapse of a predetermined time since the output terminals of the inverter are short-circuited, and the connection device is switched OFF when the rotor temperature is equal to or higher than a predetermined temperature.