# US 2014/0153141 A1 · Short-circuit detecting apparatus and method of heating system for high voltage battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153141 A1 - Document ID: US20140153141A1 - Status: Published application - Kind: A1 - Application number: 13/893,498 - Filed: 2013-05-14 - Published: 2014-06-05 - Earliest claimed: 2012-12-05 - Assignees: Kia Motors Corporation; Hyundai Motor Company - Applicants: Kia Motors Corporation; Hyundai Motor Company - Inventors: Jong Hu Yoon - Web page: https://patentgrep.com/patent/US20140153141A1 ## CPC - B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors} - B60L 1/02: to electric heating circuits - B60L 3/00: Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption (methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00) - B60L 3/0069: {relating to the isolation, e.g. ground fault or leak current} - B60L 3/12: Recording operating variables {; Monitoring of operating variables} - B60L 58/27: by heating - G01R 31/52: Testing for short-circuits, leakage current or ground faults - H02H 3/087: for DC applications - H02H 3/16: responsive to fault current to earth, frame or mass (with balanced or differential arrangement H02H3/26 {; monitoring earth connection H02H5/105}) - B60L 2240/36: Temperature of vehicle components or parts - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - 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 - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - 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 ## Abstract A short-circuit detecting apparatus and method of a heating system for a high voltage battery that includes a plurality of heaters, a short-circuited detection resistor, an A/D converter, and a Battery Management System (BMS). The plurality of heaters are connected to a high voltage battery to heat the high voltage battery. The short-circuit detection resistor is connected between the heaters to detect whether the heaters are short-circuited. The A/D converter is configured to sense a voltage applied across the short-circuit detection resistor. The BMS is configured to calculate a final operation value using the voltage applied across the short-circuit detection resistor and compare the final operation value with the value of battery pack voltage to detect whether the heaters are short-circuited. ## Claims ### Claim 1 A short-circuit detecting apparatus of a heating system for a high voltage battery, the apparatus comprising: a plurality of heaters connected to a high voltage battery and configured to heat the high voltage battery; a short-circuit detection resistor connected between the heaters and configured to detect whether the heaters are short-circuited; an analog-to-digital (A/D) converter configured to sense a voltage applied across the short-circuit detection resistor; and a Battery Management System (BMS) configured to calculate a final operation value using the voltage applied across the short-circuit detection resistor and compare the final operation value with the value of battery pack voltage to detect whether the heaters are short-circuited. ### Claim 2 A short-circuit detecting method of a heating system for a high voltage battery, the method comprising: sensing, by an analog-to-digital (A/D) convertor, a voltage applied across a short-circuit detection resistor connected in series between heaters of the heating system for the high voltage battery; calculating, by a controller, a final operation value according to Equation (1) below after receiving a signal from the A/D converter; comparing, by the controller, the final operation value with a predetermined battery pack voltage; determining, by the controller, an absence of a short-circuit when the final operation value is smaller than the battery pack voltage; and determining, by the controller, that the short-circuit occurs in the heater when the final operation value is equal to or greater than the battery pack voltage, wherein Equation (1) is expressed as short - circuit   detection   R total   resistance + short - circuit   detection   R × Vpack × 100 = final   operation   value ( 1 ) wherein, Vpack is the battery pack voltage source 13, and short-circuit R is the short-circuit detection resistor 12. ### Claim 3 (depends on 2) The method of claim 2, wherein when the short-circuit occurs, a cell voltage deviation due to battery cell characteristics is prevented by applying a control algorithm that turns off a heating control relay. ### Claim 4 A non-transitory computer readable medium containing program instructions executed by a processor or controller, the computer readable medium comprising: program instructions that control an analog-to-digital (A/D) convertor to sense a voltage applied across a short-circuit detection resistor connected in series between heaters of the heating system for the high voltage battery; program instructions that calculate a final operation value according to Equation (1) below after receiving a signal from the A/D converter; program instructions that compare the final operation value with a predetermined battery pack voltage; program instructions that determine an absence of a short-circuit when the final operation value is smaller than the battery pack voltage; and program instructions that determine that the short-circuit occurs in the heater when the final operation value is equal to or greater than the battery pack voltage, wherein Equation (1) is expressed as short - circuit   detection   R total   resistance + short - circuit   detection   R × Vpack × 100 = final   operation   value ( 1 ) wherein, Vpack is the battery pack voltage source 13, and short-circuit R is the short-circuit detection resistor 12. ### Claim 5 (depends on 4) The non-transitory computer readable medium of claim 4, further comprising: program instructions that apply a control algorithm that turns off a heating control relay when the short-circuit occurs to prevent a cell voltage deviation due to battery cell characteristics.