4558results about How to "Guarantee the safety of use" patented technology

The invention discloses an electric vehicle lease management system on the basis of charging piles. The electric vehicle lease management system comprises a system remote management control center, electric vehicles, the charging piles and intelligent terminals. A vehicle battery data acquisition module, a wireless communication module and an intelligent control module are mounted on each electric vehicle; an intelligent control unit and a communication module are mounted on each charging pile, each intelligent terminal is wirelessly communicated with the system remote management control center, and the wireless communication module of each electric vehicle is wirelessly communicated with the system remote management control center. The electric vehicle lease management system has the advantages that lease systems which are used by vehicle lease users and management staffs can be conveniently and quickly implemented by the aid of modern information network technologies, the users can order lease application and check relevant lease information via the intelligent terminals or directly via computers at any time in any places, and the management staffs can monitor various indexes such as electric vehicle location data and battery data in real time, and prompting effects can be timely realized.

A non-aqueous electrolyte including a lithium salt, an organic solvent, and an electrolyte additive is provided. The electrolyte additive is a meta-stable state nitrogen-containing polymer formed by reacting Compound (A) and Compound (B). Compound (A) is a monomer having a reactive terminal functional group. Compound (B) is a heterocyclic amino aromatic derivative as an initiator. A molar ratio of Compound (A) to Compound (B) is from 10:1 to 1:10. A lithium secondary battery containing the non-aqueous electrolyte is further provided. The non-aqueous electrolyte of this disclosure has a higher decomposition voltage than a conventional non-aqueous electrolyte, such that the safety of the battery during overcharge or at high temperature caused by short-circuit current is improved.

The invention discloses a pressure device comprises a pressure device, a cover board, an over-pressure outage switch and a trigger device; the cover board is installed on the pressure device; a pressure space is defined between the cover board and the pressure device; a penetrating through hole is formed in the cover board; the over-pressure outage switch is installed on the cover board and is positioned at the through hole; the trigger device is installed between the cover board and the over-pressure outage switch; the trigger device comprises a push rod and an elastic sealing member; the push rod is movably installed between the cover board and the over-pressure outage switch; a first end of the push rod is adapted to trigger the over-pressure outage switch so that the over-pressure outage switch is cut off; the elastic sealing member is installed at the through hole; the elastic sealing member is connected with a second end of the push rod; when the pressure in the pressure space reaches a preset pressure, the pressure in the pressure space is directly applied on the elastic sealing member to drive the push rod to move to trigger the over-pressure outage switch so that the over-pressure outage switch is cut off and the pressure device is powered off. According to the pressure device of the invention, the use safety of the pressure device is effectively guaranteed.

The invention relates to a wireless charging device and a charging method thereof, which are mainly used for charging electric equipment in an electromagnetic induction way by a wireless charging seat. The wireless charging sear is periodically started to judge whether the electric equipment enters an induction range or not; once the electric equipment enters the induction range, a transmission coil of the wireless charging seat transmits electromagnetic waves, a receiving coil of the electric equipment induces the electromagnetic waves to generate current and performs switching-on or switching-off according to a given built-in time sequence to relatively change the consumption current of the transmission coil in the wireless charging seat; and then the wireless charging seat judges the change time sequence of the consumption current is consistent with the built-in time sequence or not, and the transmission coil continuously charges the electric equipment if the change time sequence of the consumption current is consistent with the built-in time sequence, and stops charging the electric equipment if the change time sequence of the consumption current is inconsistent with the built-in time sequence. Therefore, the damages caused by different voltage designing of the wireless charging seat and the electric equipment are prevented, and safety in use is ensured.

The invention discloses a method and device for controlling charging temperature rise of a mobile terminal, and belongs to the technical field of communication. The method comprises the steps that whether the mobile terminal is in a non-standby charging state is detected; if the mobile terminal is in the non-standby charging state, whether the mobile terminal runs a specified application program is judged; if the mobile terminal runs the specified application program, whether temperature of a battery of the mobile terminal reaches a preset temperature threshold value is detected; if the temperature of the battery reaches the preset temperature threshold value, a charging current of the battery is limited according to a preset current value. According to the method and device for controlling the charging temperature rise of the mobile terminal, the temperature of the battery is monitored by the mobile terminal according to the use circumstance of the specified application program by the mobile terminal in a charging process, the current value of the charging current is limited when the temperature of the battery reaches the preset temperature threshold value, and the purpose of controlling the charging temperature rise of the mobile terminal is achieved.

The invention relates to a mixed airplane brake system and a control method. A brake valve of the mixed airplane brake system is connected to a airplane pressure supply system, an electro hydraulic servo valve oil inlet and an oil returning tank through a pipeline; the electro hydraulic servo valve is connected to a brake nozzle of the brake valve, an oil inlet of the electromagnetic valve and an airplane oil return tube through the pipeline; and an electromagnetic hydraulic lock and the electro hydraulic servo valve are parallel channels on a hydraulic line. An oil inlet pressure transducer is arranged on the pipeline between the brake valve and the electro hydraulic servo valve; a brake port pressure transducer is arranged on the pipeline between the electromagnetic valve and a brake machine wheel. Under the failure of the electro hydraulic servo valve, an airplane antiskid brake control system can automatically convert a current normal brake mode to a standby brake mode and then enables reliable operation, driver intervention is not required, so that the work load of the driver is reduced. The mixed airplane brake system enables mode record on a fault state of the electro hydraulic servo valve, and is convenient for troubleshooting and maintenance by maintainer after flight.

The invention discloses a device for managing energy of lithium-ion power batteries of electric vehicles and provides a system for managing energy of lithium-ion power batteries of electric vehicles. The system is installed on the vehicle, can monitor the lithium-ion power batteries in real time and can properly control charge and discharge according to the charge and discharge requirements of the lithium-ion power batteries. In the invention, each integrated lithium-ion power battery is controlled by a special control chip, the trickle precharge, quick constant-current charge, constant-voltage charge and supplementary pulse charge occluded stage methods are adopted in the charge process, and equalization discharge control is adopted in the discharge process, which is beneficial to stability of the output voltage and ensures good running smoothness of the electric vehicles. The special control chips have unique address codes and a microprocessor of the system can read and write the information of the special chips. Equalization of charge and discharge processes of each group of lithium-ion power batteries is achieved according to the acquired battery voltage, charge and discharge current and voltage variation of energy transmission control modules of the temperature information control system.

The invention discloses a double-flexible-grinding-head magnetorheological polishing device. In the device, a vertical gantry of a bed body and an X-axis are both fixed on a horizontal base; a worktable is fixed on a sliding block of the X-axis; a Y-axis is fixed on a horizontal beam of the vertical gantry; and a first Z-axis and a second Z-axis are arrangedon the Y-axis in parallel. A large flexible grinding head is installed on the first Z-axis; and a small flexible grinding head is arranged on the second Z-axis. A high-flow circulation system connected with the large flexible grinding head and a low-flow circulation system connected with the small flexible grinding head are arranged on a trolley. A control cabinet is arranged at the rear part of the vertical gantry; and a circulation system cabinet and a cleaning system are arranged at the side surface of the vertical gantry. The double-flexible-grinding-head magnetorheological polishing device provided by the invention has the advantages of high accuracy, high rigidness, high stability and high dynamic property. The double-flexible-grinding-head magnetorheological polishing device not only can be used for processing of large-caliber phase elements, but also can be used for high-accuracy processing of large-caliber planar optical elements within the range of full caliber. The optimal matching of the processing efficiency and the processing accuracy can be realized.

The invention discloses an installation method of ship single shafting without setting a front bearing of a stern shaft tube, mainly comprising the following steps of: determining the position of a boring hole of a bearing installing hole by using a tail datum point and a head datum point on a shafting central line as datum and adopting an illumination method; positioning a middle bearing by using the central point of a bearing installing hole at the front end of the stern shaft tube and the central point of the bearing installing hole at the back end as the datum and adopting the illumination method; and hoisting a stern shaft, a central shaft and a main machine and then connecting the central shaft with the stern shaft into single shafting. The invention initially positions the central bearing through adopting the illumination method twice to ensure that the installation precision of the ship single shafting without setting the front bearing of the stern shaft tube is effectively controlled, and can enhance the installation efficiency, ensure the installation precision of the shafting and accord with the requirements of the ship design, and the shafting installed by the installation method can run more stably so as to ensure the using safety of the bearing and the main machine.

The invention provides a lithium ion battery negative electrode, which comprises a current collector, a negative electrode material layer and an electrolyte coating, wherein the electrolyte coating is positioned between the negative electrode material layer and the current collector and consists of perovskite type solid electrolytes and bonding agents, and the chemical formula of the perovskite type solid electrolytes is A<x>B<y>TiO<3>, A<x>B<y>Ta<2>O<6>, A<x>B<y>Nb<2>O<6> or A<h>M<k>D<n>Ti<w>O<3>. The invention also provides a preparing method of the lithium ion battery negative electrode and a lithium ion battery adopting the lithium ion battery negative electrode. The lithium ion battery adopting the lithium ion battery negative electrode provided by the invention can withstand multi-time over discharging cycles, and the service life and the safety performance of the battery are ensured. Meanwhile, the preparing method of the lithium ion battery negative electrode provided by the invention has the advantages that the process is simple, and the operation is easy.

The invention provides a method and a system for switching intelligent terminal safe work mode; the method presets the work mode of the intelligent terminal into a normal work mode and at least one safe work mode; these work modes need trigger of an external triggering device for completing the switching; the method comprises the following steps: generating, by the external triggering device, a command for switching the intelligent terminal into a designated work mode, and sending the command outside; receiving, by the intelligent terminal, the command for switching the work mode of the intelligent terminal generated by the external triggering device; analyzing, by the intelligent terminal, the command for switching the work mode of the intelligent terminal, and configuring the intelligent terminal to enter the designated work mode. The system provides such a triggering device and an intelligent terminal. The system for switching intelligent terminal safe work mode utilizes the external triggering device for triggering the mobile terminal to switch the work mode, thus limiting the use of the mobile terminal technically, thereby ensuring the safety of usage.

The invention relates to fault diagnosis technology for a mechanical tower, which comprises a sensor group comprising a vibration or/and steady-state acceleration detection sensor and a forced direction detection sensor, and a fault information processor for acquiring signals of the sensor group and analyzing and diagnosing the signals of the sensor group. The signals detected by the sensor groupare transmitted to the fault information processor through cables, the hardware of the fault information processor acquires the signals, and then the corresponding software of the fault information processor performs analytical diagnosis and treatment. Because a plurality of groups of acceleration sensors arranged at a specific position for monitoring the dynamic condition of the tower under a running state are adopted, the technology not only can master the vibration displacement born by the tower along the direction of geographical coordinates, but also can effectively monitor various influences brought by torsional vibration caused by environmental factors and change caused by factors such as individual foundation of a tower body and the like. Simultaneously, aiming at the change factors, the fault information processor matched with the acceleration sensors warns in time within a range of ensuring the normal work of the tower. Therefore, the technology provides a technical support for ensuring the using safety of the tower and improving the service life.

The invention relates to a variable-speed winch and a foldable type onboard crane comprising the same, relating to the field of winches. The variable-speed winch comprises a variable-speed mechanism, a driving shaft and a driven shaft, wherein the driven shaft is arranged on a stand of the variable-speed winch through a bearing and at the outer side of the driving shaft and is provided with a power output mechanism; the power output end of the driving shaft is provided with a gear locating slot, and the corresponding driven shaft is provided with a locating pin; the locating pin is arranged on the end part of the driving shaft or in the gear locating slot; the variable-speed mechanism comprises a center wheel and a planet wheel; the part of the driving shaft, which is close to the planet wheel, is provided with a radially outwards raised outer spline, and the inner surface of the corresponding variable-speed mechanism is provided with an inner spline; the inner wall of the driven shaft is provided with an inner spline in clearance fit with the outer spline of the driving shaft; and the outer spline of the driving shaft is respectively meshed with the inner spline of the variable-speed mechanism and the inner spline of the driven shaft to form multi-gear variable-speed transmission. The variable-speed winch can realize variable speed of at least two gears and has the advantages of simple structure, convenience for operation, good speed varying effect, small mass and high transmission ratio; and in addition, the foldable type onboard crane with the variable-speed winch has small size and high lifting capacity.

The invention relates to an intelligent meal delivery robot comprising a moving device, a lifting device, a meal delivery device and a recycling device. The moving device is provided with the meal delivery device, and one side of the meal delivery device is fixedly provided with the recycling device. By means of the intelligent meal delivery robot, the position of a tray can be adjusted, requirements of dinning tables with different heights are met, compatibility of the dinning tables in different specifications is remarkably improved, and the application range is wide.

The invention discloses a method and a device for locking and unlocking handheld equipment. In the invention, the method comprises the following steps of: setting a default question and default matching information; reading and output the default question according to locking or unlocking activation information; receiving response information which is input by a user to answer the default question; and when the response information input by the user is matched with the default matching information, performing locking or unlocking operation. The method and the device guarantee the requirements of the user on use safety and privacy by verifying the identity of the user, are simple and easy, make the remembering of the user convenient, and improve the use experience of the user.

The invention discloses a floor scrubber which comprises a floor scrubber body and a charging base, the floor scrubber body comprises a handle assembly, a main machine assembly and a cleaning head assembly, the handle assembly is connected to the upper portion of the main machine assembly, and the cleaning head assembly is connected to the lower portion of the main machine assembly; the main machine assembly comprises a clear water tank, a sewage tank, a suction motor assembly, a battery pack assembly and a control system; the cleaning head assembly comprises a rolling brush, a rolling brush driving motor and a transmission assembly, and the rolling brush driving motor drives the rolling brush to rotate through the transmission assembly; one end of a clear water pipe is connected with the clear water tank, and the other end extends to the cleaning head assembly to flush the rolling brush; an air suction port is formed in the upper end of the sewage tank, the suction motor assembly is communicated with the air suction port, a sewage inlet is formed in the lower end of the sewage tank, one end of a sewage pipe is connected with the sewage inlet, and the other end of the sewage pipe extends to the rolling brush of the cleaning head assembly; after the scrubber main body is placed on the charging base, the control system automatically controls/receives a user operation signal to drive the rolling brush to rotate for self-cleaning; the suction motor assembly is provided with an air suction connector, one end of an air suction pipe is communicated with the air suction connector, and the other end of the air suction pipe is communicated with a battery pack assembly installation cavity. The floor scrubber is simple in structure, the rolling brush can be automatically cleaned, effective heat dissipation is conducted on the battery assembly through existing elements, impurities and sewage are separated, the scrubber is provided with a water level alarm system, the use safety is guaranteed, and the service life of the scrubber is prolonged.

The invention discloses a shutdown method of a variable frequency air conditioner. An indoor machine or an outdoor machine sends out a shutdown signal, and the outdoor machine receives the shutdown signal and analyzes a shutdown reason. When the shutdown reason is an emergency shutdown situation in an accidental shutdown, immediate shutdown processing is carried out.When the shutdown reason is a non-urgent shutdown situation in the accidental shutdown, underclocking shutdown processing is carried out. When the shutdown reason is a normal shutdown, the underlocking shutdown processing is carried out. By distinguishing the shutdown reasons of a variable frequency air conditioner and adopting different shutdown modes to different shutdown reasons, emergence of situations of high-frequency shutdown of the variable frequency air conditioner is greatly reduced, service life of the variable frequency air conditioner is further improved, immediate shutdown is conducted when urgent shutdown is needed, and using safety is improved. The invention further discloses a variable frequency air conditioner, a shutdown reason analyzing module is added in the air conditioning system to analyze the shutdown reason, and adopts different shutdown modes according to different shutdown reasons, the high-frequency shutdown is reduced, and service life of the air conditioner is improved.

The present disclosure relates to a fingerprint identification method and apparatus. The method comprises: when a finger slides on a fingerprint identification panel, reading a plurality of different fingerprint images sensed by the fingerprint identification panel when the finger slides to different positions; performing image stitching on the plurality of different read fingerprint images to obtain a complete fingerprint image; and performing fingerprint identification on the complete fingerprint image. The complete fingerprint image does not need to be obtained only by touching the fingerprint identification panel for once and the method and the apparatus have no special requirement for the size of the fingerprint identification panel, and thus, even if the fingerprint identification panel is narrow, the complete fingerprint image also can be obtained by finger sliding and image stitching to finish fingerprint identification, thereby releasing an available space of terminal equipment.