# US 10,766,480 B2 · Hybrid construction machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,480 B2 - Document ID: US10766480B2 - Status: Granted - Kind: B2 - Application number: 15/670,039 - Filed: 2017-08-07 - Published: 2017-11-23 - Granted: 2020-09-08 - Earliest claimed: 2008-11-10 - Assignees: Sumitomo Heavy Industries, Ltd.; Sumitomo(S.H.I.) Construction Machinery Co., Ltd. - Applicants: Sumitomo Heavy Industries, Ltd.; Sumitomo(S.H.I.) Construction Machinery Co., Ltd. - Inventors: Chunnan Wu; Hideaki Kanbayashi; Kyoko Takanashi - Web page: https://patentgrep.com/patent/US10766480B2 ## CPC - B60W 20/50: Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode - B60K 6/48: Parallel type - B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors} - B60L 1/20: {Energy regeneration from auxiliary equipment} - B60L 3/0023: {Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train} - B60L 50/16: with provision for separate direct mechanical propulsion - B60L 50/61: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles - B60L 58/24: for controlling the temperature of batteries - B60W 10/06: including control of combustion engines - B60W 10/08: including control of electric propulsion units, e.g. motors or generators - B60W 10/30: including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps - B60W 30/1886: {Controlling power supply to auxiliary devices} - B60W 50/029: Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts - E02F 9/123: {Drives or control devices specially adapted therefor (E02F9/125 and E02F9/128 take precedence)} - E02F 9/2058: {Electric or electro-mechanical or mechanical control devices of vehicle sub-units (for vehicles in general B60W)} - E02F 9/2075: {of the hybrid type (for vehicles in general B60W20/00)} - E02F 9/2091: {Control of energy storage means for electrical energy, e.g. battery or capacitors (energy recovery arrangements in hydraulic or pneumatic drives E02F9/2217)} - E02F 9/2246: {Control of prime movers, e.g. depending on the hydraulic load of work tools} - E02F 9/26: Indicating devices {(E02F5/145 takes precedence)} - F02D 29/06: peculiar to engines driving electric generators - B60K 6/442: Series-parallel switching type - B60L 2200/40: Working vehicles - B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)} - B60W 2510/242: for electrical energy - B60Y 2200/25: Track vehicles - B60Y 2200/412: Excavators - Y02T 10/62: Hybrid vehicles - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - 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 - 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 - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A hybrid construction machine includes: a motor generator system connected to an internal combustion engine and performing a motor generator operation; an electric power accumulation system connected to the motor generator system; a load drive system connected to the electric power accumulation system and being driven electrically; an abnormality detection part equipped to the motor generator system, the electric power accumulation system and the load drive system; and a main control part determining whether an abnormality has occurred based on a detection value of the abnormality detection part. When the abnormality determination part determines that an abnormality has occurred, the main control part stops a drive of a drive system in which the abnormality is detected in the load drive system. ## Claims ### Claim 1 A hybrid construction machine comprising: a lower running body; an upper turning body mounted on the lower running body through a turning device; a motor generator system connected to an internal combustion engine and performing a motor generator operation, the motor generator system including a first inverter and a motor generator, the first inverter controlling an operation of the motor generator, the motor generator being driven by an alternating current output by the first inverter to operate as a motor and being driven by a drive power of the internal combustion engine to operate as a generator; a load drive system driven electrically, the load drive system including a second inverter and a turning electric motor, the second inverter controlling an operation of the turning electric motor, the turning electric motor being contained in the turning device and driven by an alternating current output by the second inverter to drive the turning device; an electric power accumulation system connected to the first inverter of the motor generator system and the second inverter of the load drive system, the electric power accumulation system including an electric power accumulator that accumulates DC electric power and a DC bus; an abnormality detection part operatively connected to the motor generator system, the electric power accumulation system and the load drive system, the abnormality detection part detecting an abnormality in the motor generator system, the electric power accumulation system, and the load drive system; and a main control part that determines an occurrence of the abnormality based on a detection value of the abnormality detection part, wherein the main control part stops driving the motor generator system in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 2 (depends on 1) The hybrid construction machine as claimed in claim 1, wherein the main control part stops driving the load drive system in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 3 (depends on 1) The hybrid construction machine as claimed in claim 1, wherein the abnormality detection part is provided in the electric power accumulation system, and the main control part stops the electric power accumulation system in response to the detection value of the abnormality detection part exceeding a predetermined threshold value. ### Claim 4 (depends on 1) The hybrid construction machine as claimed in claim 1, further comprising: a hydraulic pump driven by the internal combustion engine, wherein the main control part reduces an output value of the hydraulic pump in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 5 (depends on 1) The hybrid construction machine as claimed in claim 1, wherein the main control part continues driving the internal combustion engine in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 6 (depends on 1) The hybrid construction machine as claimed in claim 1, wherein the load drive system is connected to the electric power accumulation system, and wherein the main control part stops driving the load drive system in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 7 (depends on 6) The hybrid construction machine as claimed in claim 6, wherein the abnormality detection part is provided in the electric power accumulation system, and the main control part stops the electric power accumulation system in response to the detection value of the abnormality detection part exceeding a predetermined threshold value. ### Claim 8 (depends on 6) The hybrid construction machine as claimed in claim 6, further comprising: a hydraulic pump driven by the internal combustion engine, wherein the main control part reduces an output value of the hydraulic pump in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 9 (depends on 6) The hybrid construction machine as claimed in claim 6, wherein the main control part continues driving the internal combustion engine in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 10 (depends on 1) The hybrid construction machine as claimed in claim 1, wherein the load drive system is connected to the electric power accumulation system, and wherein the main control part continues driving the load drive system in response to the abnormality detection part detecting the abnormality in the motor generator system. ### Claim 11 (depends on 10) The hybrid construction machine as claimed in claim 10, further comprising: a hydraulic pump driven by the internal combustion engine, wherein the main control part reduces an output value of the hydraulic pump in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 12 (depends on 10) The hybrid construction machine as claimed in claim 10, wherein the main control part continues driving the internal combustion engine in response to the abnormality detection part detecting the abnormality in the electric power accumulation system. ### Claim 13 (depends on 10) The hybrid construction machine as claimed in claim 10, wherein the main control part stops driving the load drive system in response to the abnormality detection part detecting the abnormality in the electric power accumulation system.