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79results about How to "Reduce the likelihood of danger" patented technology

Internal short-circuit detection method of power battery

The invention discloses an internal short-circuit detection method of a power battery. The internal short-circuit detection method comprises the following steps: detecting whether lowest voltage of the battery is lower than the set value and lasts for the preset time or not when a vehicle runs again or is charged, if so, judging the existence of short circuit, and performing maintenance operation on the battery through a prompt of a BMS (battery management system); identifying the difference of the battery in the static state through the BMS when the battery is arranged at the discharge tail end, if the difference in the capacity of the battery is too great, exceeds the set value and lasts for the preset time, judging the existence of the short circuit in the battery, emitting an alarm through the BMS and reminding of performing the maintenance operation on the battery; and recording the number of times of achieving cutoff voltage of the battery in the BMS, when the difference in the number of times of charge cutoff or discharge cutoff of the battery is larger than the set value, judging the existence of the short circuit in the battery, emitting the alarm through the BMS and reminding of performing the maintenance operation on the battery. According to the internal short-circuit detection method disclosed by the invention, the internal short circuit of the battery can be identified through a variety of means, and the internal short-circuit situation of the battery can be identified to the greatest extent by combining with a statistical method on the basis of long-term operation data.
Owner:HUIZHOU EPOWER ELECTRONICS

Speed-adjustable high-thrust hydraulic lifting table

The invention relates to a speed-adjustable high-thrust hydraulic lifting table. The speed-adjustable high-thrust hydraulic lifting table comprises a lifting platform, a hydraulic cylinder, a control valve group, an oil supply system, a controller, an oil tank, a speed adjusting valve, a booster, a two-position two-way reversing valve and a stepper motor; the lifting platform is connected to a push rod of the hydraulic cylinder; and the oil supply system can suck oil from the oil tank and supply the oil to the hydraulic cylinder. The oil supply system supplies the oil to the hydraulic cylinder via the speed adjusting valve, the control valve groupand the booster in sequence; and the controller is electrically connected with the two-position two-way reversing valve, the stepper motor, the speed adjusting valve and the oil supply system. The hydraulic lifting table has two characteristics of adjustable moving speed of the lifting platform and large thrust supplied by the hydraulic cylinder. In addition, the control valve group consisting of a valve element rotary reversing valve and cartridge valves is used for replacing a slide valve, the conversion of oil flowing directions of the hydraulic system can be realized, and the circulating capacity is greater, so that the lifting table is suitable forhigh-flow places.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG

Internal short-circuit detection method of power battery

The invention discloses an internal short-circuit detection method of a power battery. The internal short-circuit detection method comprises the following steps: detecting whether lowest voltage of the battery is lower than the set value and lasts for the preset time or not when a vehicle runs again or is charged, if so, judging the existence of short circuit, and performing maintenance operation on the battery through a prompt of a BMS (battery management system); identifying the difference of the battery in the static state through the BMS when the battery is arranged at the discharge tail end, if the difference in the capacity of the battery is too great, exceeds the set value and lasts for the preset time, judging the existence of the short circuit in the battery, emitting an alarm through the BMS and reminding of performing the maintenance operation on the battery; and recording the number of times of achieving cutoff voltage of the battery in the BMS, when the difference in the number of times of charge cutoff or discharge cutoff of the battery is larger than the set value, judging the existence of the short circuit in the battery, emitting the alarm through the BMS and reminding of performing the maintenance operation on the battery. According to the internal short-circuit detection method disclosed by the invention, the internal short circuit of the battery can be identified through a variety of means, and the internal short-circuit situation of the battery can be identified to the greatest extent by combining with a statistical method on the basis of long-term operation data.
Owner:HUIZHOU EPOWER ELECTRONICS

Fire alarm system of new energy automobile and new energy automobile

The invention relates to the field of new energy vehicles, and in particularly to a fire alarm system of a new energy automobile and a new energy automobile. The fire alarm system of the new energy automobile comprises a plurality groups of fire detection devices, a conditioning circuit, a plurality of regional monitor, a host assembly, a vehicle-mounted intelligent terminal, a plurality groups offirefighting devices, a seat controller, a vehicle body controller and an engine controller. Each group of fire detection devices comprises a smoke detector and a temperature detector; the output endof each group of fire detection devices is connected with the input end of the conditioning circuit; the output end of the conditioning circuit is connected with the input end of the regional monitor; the output end of the regional monitor is connected with the host assembly. The fire alarm system of a new energy automobile and a new energy automobile can more accurately judge the real state of the vehicle fire and realize the linkage of a plurality of systems when the vehicle fires, thereby realizing the alarm of the vehicle, the escape of people, the positioning of the fire position and thetargeted automatic fire extinguishing operation, and realizing high safety performance.
Owner:合肥众建翔新能源有限公司

Power battery, thermal diffusion protection method of power battery and vehicle

The invention relates to the technical field of vehicles, and discloses a power battery, a thermal diffusion protection method of the power battery and a vehicle. The power battery comprises a shell and a module assembly arranged in the shell, the shell comprises an upper cover and a bottom plate which are buckled with each other, the module assembly comprises a plurality of modules which are electrically connected with each other, an explosion-proof valve is arranged on the upper cover or the bottom plate, the power battery further comprises a fireproof assembly, an exhaust passage and an insulating assembly, and the fireproof assembly is arranged between the module assembly and the upper cover; an exhaust passage communicated with the explosion-proof valve is formed between the edge of the module assembly and the inner side wall of the shell; the insulating assembly is arranged between two adjacent modules. The fireproof assembly can be used for preventing gas from breaking through the upper cover during thermal runaway; the exhaust assembly is used for guiding the gas, so that the gas flows out of the power battery through the exhaust assembly and the explosion-proof valve; meanwhile, the insulating assembly arranged between the two adjacent modules can effectively improve chain reactions such as high-voltage short circuit and the like in the module assembly when the power battery is in thermal runaway.
Owner:CHINA FIRST AUTOMOBILE

Low-risk wood panel sawing machine without hand support

The invention relates to the technical field of electromechanical equipment, and discloses a low-risk wood panel sawing machine without hand support. The low-risk wood panel sawing machine without hand support comprises an operating table. The front of the operating table is fixedly connected with a baffle, and a circular groove is formed inside the baffle. When using the low-risk wood panel sawing machine without hand support sawing wood boards of different thicknesses, a force of a pair of springs can be used to make a pressure bar press on the wood boards. When the wood boards of differentwidths are sawed, limit blocks are moved to adjust the position of the pressure bar and then fixes the wood boards, thereby realizing the effect of the wood boards without hand support. The wood boards pass an opening contact and give the opening contact a downward force. At this time, the opening contact will control the push rod I to press the button I, and to start the low-risk wood panel sawing machine without hand support. When the wood boards pass a closing contact, the closing contact makes a striker to hit the button II and stop the low-risk wood panel sawing machine without hand support, thus achieving the effect of reducing the possibility of danger during the operation of the equipment.
Owner:台州市路桥万驰机械有限公司

Steel bar folded edge corrugated die extrusion device

The invention discloses a steel bar folded edge corrugated die extrusion device. The steel bar folded edge corrugated die extrusion device comprises a U-shaped extrusion base. A spring is fixedly connected to the bottom of the inner wall of the U-shaped extrusion base. The end, away from the U-shaped extrusion base, of the spring is fixedly connected with a U-shaped groove. Sliding blocks are arranged on the two sides of the outer wall of the U-shaped groove. The positions, corresponding to the sliding blocks, of the two sides of the inner wall of the U-shaped extrusion base are provided with sliding grooves. According to the steel bar folded edge corrugated die extrusion device, a to-be-folded steel bar is placed above the U-shaped groove, an electric telescopic rod contracts, accordingly a second fixing plate and an extrusion block are driven to conduct downward pressing, a U-shaped block conducts extrusion towards the position of the U-shaped groove, and accordingly, the steel bar is extruded and formed. According to the extrusion manner, the steel bar forming accuracy is guaranteed, meanwhile, manual work is not needed for positioning supporting, a large amount of manpower and a large number of material resources are saved, and the possibility of danger of workers in the operation process is reduced. Damage caused by hardness deformation in the steel bar extrusion process can be avoided through the spring at the bottom of the U-shaped groove.
Owner:马鞍山市诺尔达数控模具制造有限公司

Intelligent command method, system and equipment for training machine and storage medium

The invention relates to a training machine intelligent command method, system and device and a storage medium, and relates to the field of simulated flight training monitoring management, and the method comprises the steps: if the current route of a target training aircraft deviates, planning homeward voyage route information for the target training aircraft; if an intersection point exists between the distinguishing flight route information and the homeward flight route information of other training aircrafts, calculating predicted flight time required by the training aircraft deviating from the flight route to reach the intersection point, and obtaining predicted positions of other training aircrafts after the predicted flight time; and if the distance value between the predicted position and the intersection point is within a preset first warning distance value range, displaying a first-level collision risk early warning corresponding to the training aircraft deviating from the course. The technical effect of the invention is that the probability of collision between the target training aircraft and other training aircrafts when the target training aircraft returns to the set course after yawing is reduced.
Owner:BEIFANG TT AVIATION TECH DEV BEIJING CO LTD
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