464results about How to "Guaranteed normal startup" patented technology

The invention provides a control method and device for the electric quantity of a low-voltage accumulator. After the voltage value of the low-voltage accumulator is obtained, if the voltage value of the low-voltage accumulator is lower than a preset voltage threshold, low-voltage warning information is sent to user terminal equipment; after electrifying allowance information sent by the user terminal equipment according to the low-voltage warning information is obtained, a control command is sent to a high-voltage power battery, and the high-voltage power battery is controlled to charge the low-voltage accumulator. Through the adoption of the control method for the electric quantity of the low-voltage accumulator disclosed by the invention, when the voltage value of the low-voltage accumulator is lower than the preset voltage threshold, the low-voltage accumulator is charged by the high-voltage power battery, so that the voltage of the low-voltage accumulator is kept balanced, and the normal start of low-voltage electric equipment including a vehicle electronic control unit and the like is guaranteed.

The invention relates to a method for heating lube of a frequency conversion air-conditioning compressor. A PWM signal is output through a singlechip; two IGBTs for driving the frequency conversion compressor which are connected with a two-phase coil in the compressor respectively and form a loop are opened; and the coil is heated; one of the IGBTs is closed so that the coil produces opposing electromotive force to form a continuous current loop. The method has the following characteristics: under the environment of lower outdoor temperature, the method allows a frequency conversion air conditioner to carry out heating and melting on the lube effectively, ensures the normal startup of the compressor, avoids the occurrence of faults caused by overcurrent of the compressor, does not add extra hardware equipment, only improves the heating method on the basis of the prior circuit and saves the expense for purchasing an additional electric heating belt.

The invention discloses a method, a device, a server and terminal units for managing application programs, and belongs to the field of terminal units. The method includes acquiring application program and file association lists; and managing the application programs according to the application program and file association lists. The server acquires the application program and file association lists according to statistics of application program messages of the application programs and file operation behavior, the application program messages of the application programs are reported by the terminal units, and the application programs invoke reading and writing interfaces of a system to execute the file operation behavior. The method, the device, the server and the terminal units have the advantages that the application program and file association lists are acquired from the server, files associated with the application programs can be managed while the application programs are managed owing to the application programs and the associated files which are indicated in the lists, the requirement on the technical cost of users of the terminal units is lowered, the influence of accumulated junk files on the normal running speed and the processing capacity of each terminal unit is prevented, and starting and normal running of each terminal unit are guaranteed.

The invention reveals a high efficiency methanol-water hydrogen production system and a hydrogen production method thereof. The system comprises a liquid reservoir vessel, a heat exchanger, a vaporizer, a reforming chamber and a separation chamber, wherein the liquid reservoir vessel, the heat exchanger, the vaporizer, the reforming chamber and the separation chamber are successively connected through pipelines, a ceramic membrane separator and a metallic palladium membrane separator are arranged in the separation chamber, gas entering into the separation chamber is pretreated by the ceramic membrane separator to obtain high purity hydrogen, and then the high purity hydrogen enters into the metallic palladium membrane separator so as to obtain hydrogen with higher purity. According to the high efficiency methanol-water hydrogen production system and the hydrogen production method thereof, the high purity hydrogen (with a purity of about 99%) is separated from reformed gas through the ceramic membrane separator at first, and then the hydrogen with higher purity (more than 99.9999%) is separated through the metallic palladium membrane separator.

The invention discloses a power battery of a motor vehicle provided with an air conditioning system, which is technical characterized in that a heat exchanging fan is arranged on the inner surface of a top cover of a battery packaging box, a battery cell is arranged in the battery packaging box below the heat exchanging fan, a heat conducting plate is arranged at the bottom of the battery packaging box below the battery cell, a refrigerant pipe and a hot water pipe are arranged inside the heat conducting plate, a high-voltage wire connector and a low-voltage wire connector are arranged on a battery control device, an air blower is arranged at an air inlet of the vehicle body, a fan heater and an evaporator are arranged on a ventilation pipeline between the air blower and an air outlet of a passenger compartment, an electric air conditioning compressor and a condenser are connected in series and then connected in parallel with the refrigerant pipe inside the heat conducting plate on the evaporator, and a water circulation pump and a water storage tank provided with a heater are connected in series and then connected in parallel with the hot water pipe inside the heat conducting plate on the fan heater. The power battery of the motor vehicle adopts the water cooling method and air cooling method simultaneously. The air conditioner takes the heat of the battery away or heats the battery, and the fan is used for causing forced convection so as to guarantee heat balance of the battery and further guarantee the working performance and service life of the lithium battery.

The invention relates to a method for the license control of a Linux operating system. The method comprises two parts, namely a self protection mechanism and a license management mechanism respectively, wherein the self protection mechanism is implemented by both a kernel layer license control self-inspection module and an application layer license communication module; and the license management mechanism is implemented through a license communication module by an application layer license control module and an application layer license distribution module. The self protection mechanism loads the license control self-inspection module into a kernel space by utilizing the loading of a Linux system kernel, and the license control self-inspection module finishes integrity inspection on the license control function of the system and performs corresponding processing according to an inspection result. By the method, the problem that the license control function of the conventional software or system is cancelled can be effectively solved, and the validity of a license file in a distribution process can be ensured by multiple encryption, so the license file is prevented from being randomly falsified. The method has universality, and can be used for realizing user license control in a Linux environment.

The invention provides a method and apparatus for starting a terminal device system program. The method comprises the following steps: dividing a plurality of program modules into a plurality of task groups, wherein at least one program module in each task group has a dependency relationship with the program modules in other task groups, and the program modules in the each task group have no dependency relationship. By means of the grouping manner, the dependency relationship between the program modules in the system program becomes clearer, when the system programs are started according to actual needs, related task groups can be directly adjusted according to the dependency relationship between the program modules, thereby enhancing the configuration performance and the expandability of starting the system program. In the method, the task groups are sequentially started according to the dependency relationship between the corresponding program modules, therefore the normal start of the program modules in the task groups can be ensured; and the program modules in the task groups are started in a parallel mode, which is conducive to shortening the start time of the system program and improving the utilization rate of the system resources.

The invention discloses a power-down prevention Linux system startup method. The method is a union file system method and comprises an initialization step and a folder recovery step. In the initialization step, four key folders such as /etc, /root, /var and /tmp of a root file system are remounted into four empty read-write folders of a memory file system in a way of remounting of a file system; in the folder recovery step, the first three empty read-write folders of a memory file system is combined with corresponding read-only system folders on a disk by calling related commands of union folders, so that the first three empty read-write folders comprise the contents of the corresponding read-only system folders on the disk. By the method, in the process of system startup and operation, system folders are written in the memory instead of the disk, so the file system is protected and a perfect power-down prevention scheme is realized.

The invention provides a method and system for preventing insufficient voltage of a low-voltage battery after a new energy vehicle is parked. As for the new energy vehicle, the low-voltage storage battery suffers from self-discharging when the vehicle is parked for a long time, and the integral controller and the battery management system of the parked vehicle are under a sleeping or off state, and cannot start DCDC on demand to enable a high voltage system to charge for the low-voltage storage battery. The problem that the integral controller cannot be started and the relay cannot be driven due to excessively-low voltage so that the vehicle cannot be started after the vehicle is parked for a long time can be resolved. With an independent voltage monitoring module, the battery management system and a DC voltage converting module can be awakened actively, when the voltage of the storage battery is lower than the set threshold value. Energy can be compensated for the low-voltage storagebattery, and the normal starting of a vehicle after being parked for a long time can be guaranteed.

The invention provides a method and system for electricity lacking protection of an automobile storage battery. The method includes step S01 of determining whether a current state of a vehicle is a locked and dormant state, and if the current state of the vehicle is the locked and dormant state, executing step S02; step S02 of determining whether a current storage battery pack is in a state of being to undergo electricity lacking, and if the current storage battery pack is in the state of being to undergo electricity lacking, executing step S03; step S03 of judging whether the current gear position of the vehicle is at a gear P or N, and if the current gear position of the vehicle is at the gear P or N, executing step S04; step S04 of determining whether a current engine fuel amount is greater than or equal to a preset value, and if the current engine fuel amount is greater than or equal to the preset value, executing step S05; and step S05 of starting an engine to charge the storage battery pack. According to the method, the engine can be started without a key, the vehicle is more intelligent, the problem of storage battery electricity lacking resulting from long-time standing storage of the vehicle is solved, and it is ensured that the vehicle can still be started normally after being stored for a long period of time.

The invention relates to a control method of a refrigerator applicable to a high-temperature environment. The refrigerator comprises a refrigerating chamber and a chilling chamber, wherein the chilling chamber is internally provided with a compressor, a fan and a chilling temperature sensor; the chilling chamber is internally provided with a refrigerating temperature sensor; an air flue between the refrigerating chamber and the chilling chamber is internally provided with an air door; the compressor, the fan, the air door, the chilling temperature sensor and the refrigerating temperature sensor are connected with a control board arranged in the refrigerator; and the control method comprises the following steps that the control board selects a control mode of the refrigerator to be a common mode or a delaying optimized mode according to a chilling temperature detected by the chilling temperature sensor and then converts into the common mode. According to the control method disclosed by the invention, delaying optimized control is adopted at a high-temperature environment, and chilling and refrigerating load peak values are staggered, so that the total load peak value of the system is reduced, and the normal starting and operation of the compressor are guaranteed. Furthermore, on the premise of not increasing the cost, the starting and operation problems of the refrigerator under the high-temperature environment are solved, so that the stability and reliability of using the refrigerator are improved.

The invention discloses an air cooled heat pump unit and a control method, device and system of the unit. The control method of the air cooled heat pump unit comprises the steps of obtaining air suction pressure detected by an air suction pressure sensor; the air suction pressure is compared with the first preset air suction pressure; if the air suction pressure obtained continuously within the first preset time segment is smaller than or equal to the first preset air suction pressure, a by-pass mechanism is started, and the opening degree of a main loop electronic expansion valve is adjusted to the preset opening degree. The technical problem that when an existing air cooled heat pump unit is started under the condition of low circumstance temperature and low water temperature, frequent low-pressure protection appears, and even starting cannot be achieved is solved.

The invention discloses a power-failure-preventing upgrading method of a Linux system. In the method, before system upgrading, system backup is performed; upgrading states are marked in the system upgrading process; according to different upgrading states and upgrading types of the Linux system, system upgrading restoration is performed; and particularly, in the state of upgrading failure, the system upgrading restoration is realized in a mode of realizing system rollback by calling a standby system, so that the Linux system can be normally started.

The invention discloses an electricity-electricity hybrid fuel cell vehicle hydrothermal management system and a control method thereof. The electricity-electricity hybrid fuel cell vehicle hydrothermal management system comprises a fuel cell stack, a power cell system, a power cell thermal management system, a fuel cell cooling system, a controller and a detection unit, wherein the power cell thermal management system comprises a first electric three-way valve, a PTC heater, a second electric three-way valve, the power cell system, a second water pump, a third electric three-way valve, a radiator fan and a radiator, the fuel cell cooling system comprises a first water pump, the first electric three-way valve, the radiator, the radiator fan, the third electric three-way valve, a heat preservation water storage tank, the fuel cell stack and a condenser, the detection unit comprises two temperature detection units and a pressure detection unit, and the controller controls the working states of the PTC heater, the water pump and the radiator fan according to the detection results of the temperature detection units, so that low-temperature cold start and constant-temperature operationstate control of the fuel cell system and the power cell system are carried out.

The invention discloses a preheating system for a battery of an electric vehicle. The problem is solved that the activity of the battery of the electric vehicle declines in winter due to the low environmental temperature and then causes decline of the cruising ability. The preheating system for the battery of the electric vehicle is characterized in that a preheating device comprises an external temperature detection unit used for detecting the temperature outside the vehicle and outputting an external temperature detection signal and a control unit which is provided with a floor reference value signal in advance and coupled to the external temperature detection unit; the control unit controls a preheating component to be started or not according to the comparison situation between the external temperature detection signal and the floor reference value signal and a remote control signal of a remote control device; when the external temperature detection signal is lower than the floor reference value signal and the remote control device controls vehicle doors to be unlocked, the control unit controls the preheating component to be started. According to the system, before starting, if the external temperature is lower than a floor reference value, the preheating component is started to conduct preheating on the main lithium battery, so that it is guaranteed that the main lithiumbattery works at a proper environmental temperature.

The invention discloses a method for ensuring a normal start-up of a Linux operating system. The method comprises the following steps that during hard disk partition, a partition that is the same size as an original root partition is created as a snapshot partition; the Linux operating system is installed in the original root partition; an original initramfs mirror file in /boot is modified; the steps to modify the original initramfs mirror file in the /boot comprise: using a gunzip command and a cpio command to unpack the original initramfs mirror file to a predetermined catalog; adding a device-mapping software package to the predetermined catalog; when a dmsetup command does not exist in a sbin subcatalog, the dmsetup command in the device-mapper software package is put in the sbin subcatalog; editing an init script program, modifying a code of the init script program that mounts the root file system, and adding a corresponding code logic; generating a new initramfs mirror file to overwrite the original initramfs mirror file. By adopting the method, when a file system of the hard disk is damaged, the system can be automatically restored and be started up normally without manual participation, and normal start-up of the operating system is ensured.

The invention relates to the field of emergency protective circuit devices which react to overcurrents, in particular to a self-checking device of a motor open loss and an application method thereof. The self-checking device of the motor open loss includes current sensors (1) and is characterized by further including a motor controller (2) and an angle sensor (3), and the current sensors (1) and the angle sensor (3) are both connected with a microprocessor (21) through signal lines. The application method of the self-checking device of the motor open loss is characterized in that when a motor (4) stops working, the steps of a) inputting parameters, b) processing the parameters, c) modulating voltages and d) judging an open loss are performed sequentially. The self-checking device of the motor open loss is simple in structure, convenient to install, quick in response, safe, reliable, and wide in range of application.

The invention discloses an automatic test controller of a starter for a vehicle, which is characterized in that: based on circuit design, both ends of a normally open contact of an intermediate relay are respectively connected with a DC power supply and a starter coil, and an other normally open contact is connected with a counter; an other relay is connected in series with the DC power supply of a motor to control an oil supply electromagnet; a power switch is connected in parallel with a counting relay, and the counting relay is connected in parallel with four time relays; a second auxiliary contact of a No. 1 intermediate relay is connected in parallel between two of the time relays, a first auxiliary contact, a second auxiliary contact and a third auxiliary contact of a No. 2 relay are connected in parallel between the No. 2 time relay and the No. 3 time relay, and a normally closed contact of the No. 4 time relay is connected with the power switch. The invention can accurately control the attraction of the oil supply electromagnet of the motor, thereby realizing the oil supply and the oil interruption of the motor within specified time; in addition, the invention entirely completes the circular test experiment of the starter in an automatic state without manual intervention, also records the test results in real time, and has simple structure, low cost and high practicality.