54results about How to "Guaranteed power requirements" patented technology

The invention discloses a system, a device and a method for transmitting cell information to overcome the defect that a CPC (common pilot channel) design scheme in the prior art fails to realize wide compatibility to existing terminals. The method includes: appointing time and frequency resources on a first frequency band used by a first wireless access point downlink channel positioned at a first site or on a third frequency band in a downlink channel networking frequency band of a system to which a first wireless access point belongs, and using the appointed time and frequency resources as a cell information transmitting window of a second wireless access point which is positioned at a second site and allocates a downlink service channel and/or control channel on a second frequency band; and based on time of a first wireless frame sent by the first wireless access point, allowing a second cell to use time frequency resources contained in the cell information transmitting window to transmit cell information, on the second frequency band, of the second wireless access point. The system, the device and the method for transmitting cell information overcome the defect that the existing CPC technical scheme fails to be widely compatible to existing terminals, and complete compatibility to the existing terminals can be realized easily.

The invention relates to an energy control system and an energy control method for an electric vehicle. The energy control system comprises an accelerator pedal device, a motor, a battery status detection device and an energy management controller. The accelerator pedal device provides accelerator signals according to positions of an accelerator pedal, electricity provided by a battery serves as a power source of the motor, the battery status detection device provides charge information of the power battery and indicates second status information of power battery status abnormal levels, and the energy management controller judges current charge region where the power battery is positioned according to charge information and sets an operating mode of the motor according to the current charge region where the power battery is positioned, the second status information and the accelerator signals. Information of various statuses of the power battery and the accelerator signals are factors to be considered for operation control of the motor, faults are classified and graded to serve as references for operation control of the motor, and thereby operational reliability and safety and endurance of the electric vehicle are improved.

The invention discloses a magnetic flux-switching generator, which comprises a stator, a rotor, a magnet exciting coil and an armature coil, wherein the number of the poles of the rotor is equal to the number of the slots of the stator; the two circle edges of the armature coil are positioned in two adjacent slots of two adjacent stator gears; winding coils are connected end to end in series in turn to form single-phase centralized armature windings; and the magnet exciting coil is vertical to the armature coil. In the invention, the single-phase centralized armature windings and a permanent magnet or/and single-phase centralized magnet exciting windings are adopted in the stator part, the rotor has straight or slant slots and the number of the poles of the rotor is equal to that of the slots of the stator; and thus, the generator retains the structural advantages of compactness, simplicity, high robustness and suitability for high-speed rotation of the conventional magnetic flux-switching generator and can be directly used as a single-phase alternating current power supply due to the same phase of the electrodynamic potentials generated by the coils, and the cost of the generator is low.

The invention discloses an optical transmitting antenna system and a beam control method thereof. An optical antenna has an array structure which is formed by uniformly arranging a plurality of laser transmitting antennae and a plurality of receiving antennae. The array structure is arranged on a cambered surface (a hemispherical surface or a spherical surface). Each laser transmitting antenna comprises a transmitting multimode fiber and a transmitting micro-lens. Each receiving antenna comprises a receiving multimode fiber and a receiving micro-lens. A transmitting micro-lens is positioned in the center of each receiving micro-lens. By the optical transmitting antenna system and the beam control method thereof, the mobile communication of a near-earth atmospheric laser system is well realized, dependence on a complex acquisition pointing and tracking (APT) system is reduced, and communication reliability is improved.

The invention provides a power distribution method of an electric vehicle, and belongs to the field of electric vehicle power control. The power distribution method comprises the steps that the available power P0 of a whole vehicle, the power P1 needed by a current driving system, the power P2 needed by defrosting and demisting of a current air conditioning system, the power P3 needed by refrigerating and heating of the current air conditioning system and the power P4 consumed by a current high-low voltage conversion system are obtained; and when P0 is smaller than P1 + P2 + P3 + P4, whether the high-low voltage conversion system is shut down or not is judged according to the power demand situation of the vehicle and the electric quantity of a storage battery of the vehicle, and P0 is distributed according to the preset priority. According to the power distribution method, electricity can be saved when the available power of the whole vehicle is insufficient, the endurance mileage andthe economy of the whole vehicle are improved, the power is reasonably distributed, and the safety, the dynamic property and the comfort of the vehicle are considered.

The embodiment of the invention discloses a whole vehicle energy management method of an electric vehicle power system and a vehicle. The method comprises the following steps that a whole vehicle controller receives the current power battery temperature and the current fuel cell temperature which are sent by a power battery assembly and a fuel cell assembly correspondingly; the whole vehicle controller compares the current power battery temperature and the current fuel cell temperature with a preset temperature threshold value, and battery use modes are determined according to comparison results; and the whole vehicle controller determines the current demand power of the vehicle according to the obtained vehicle current working condition, and performs power distribution on a battery underthe battery use mode according to the current demand power. By means of the embodiment of the whole vehicle energy management method of the electric vehicle power system and the vehicle, the scheme overcomes defects which are caused because only the power battery and/ or the fuel cell is used by an electric vehicle for power supply; and while the power performance and economy of the whole vehicleare guaranteed, the fuel cell and the power battery are effectively protected, and the service life of the fuel cell and the power battery is prolonged.

The invention discloses a method and a system for body-building energy storage power generation. The method and the system for the body-building energy storage power generation comprise a body-building power transmission mechanism, an energy storage mechanism, a speed change mechanism, a generator, a control module and a storage battery, wherein the body-building power transmission mechanism, the energy storage mechanism, the speed change mechanism, the generator, the control module and the storage battery are sequentially connected, the body-building power transmission mechanism transmits kinetic energy to the energy storage mechanism, the kinetic energy is converted into potential energy of high elastic material groups in the energy storage mechanism, and thus acting energy is generated and is accumulated in the high elastic material groups in the energy storage mechanism, the potential energy of the high elastic material groups in the energy storage mechanism gently outputs kinetic energy torque after being released stably and adjusted, and the speed of the output kinetic energy torque is changed by the speed change mechanism and then the output kinetic energy torque drives the generator to generate power. According to the method and the system for the body-building energy storage power generation, manual or pedal energy generated in exercise can be converted into the potential energy of the high elastic material groups at any time, and compared with power generation by using solar energy, the method and the system for the body-building energy storage power generation are more efficient, more convenient, more economical and higher in general applicability.

The embodiment of the invention discloses a vehicle energy management method for an electric vehicle power system, and a vehicle. The method comprises the following steps that a vehicle control unit receives a current fuel battery temperature fed from a fuel battery component; the vehicle control unit compares the current fuel battery temperature with a preset temperature threshold value, and determines a battery use mode according to a comparison result; and the vehicle control unit determines the current demanded power of the vehicle according to the obtained current working condition of thevehicle, and carries out power distribution on a battery under the battery use mode according to the current demanded power. By use of the above scheme of the embodiment of the invention, defects generated since an electric vehicle adopts a single fuel battery to supply electricity are eliminated, the power demands of the vehicle under ultimate working conditions, including low-temperature startup, a high temperature and the like, can be effectively guaranteed, effective protection is provided for the fuel battery while the dynamic property and the economic efficiency of the vehicle are guaranteed, and the service life of the fuel battery is prolonged.

The invention relates to an automatic idling system based on multiple hydraulic accumulators and a control method. Based on a power battery electric quantity storage unit, the flow changing function of a hydraulic pump is achieved through the structure that a frequency-conversion power motor is adopted in a power system for driving the constant-flow hydraulic pump, the high-efficiency driving performance and the good control characteristic of frequency-conversion speed control are fully utilized, and the power system can be matched with a load in a full-power manner. Due to the fact that a composite energy combination of a power battery and the multiple sets of hydraulic accumulators is adopted, the beneficial effects of the electric quantity storage unit with relatively high energy density and the beneficial effects of a hydraulic accumulator energy storage unit with relatively high power density are integrated, the energy density is ensured through the power battery, the first hydraulic accumulator is used for providing or absorbing instantaneous large power of a hydraulic drive system, the second hydraulic accumulator is used for providing auxiliary driving for special working conditions, and various power requirements of a hydraulic excavator in complex working conditions are met.

The invention discloses a fuel cell thermal management system and method, and belongs to the technical field of new energy batteries. The fuel cell thermal management system comprises a fluid drivingdevice, a flow control device and a conductivity measuring device; cooling liquid conveyed by the fluid driving device flows through the first branch and the second branch, converges and flows via a fuel cell stack, and returns to the fluid driving device; the first branch is provided with a deionizer; the flow control device is configured to adjust the flow of the cooling liquid flowing through the first branch and the second branch, and the conductivity measuring device is configured to measure the conductivity of the cooling liquid. The conductivity measuring device measures the conductivity of the cooling liquid in real time, so that the opening degree of the flow control device is adjusted at any time, the flow of the cooling liquid flowing through the first main path is controlled, namely the proportion of the cooling liquid subjected to deionization treatment is controlled, then the conductivity of the cooling liquid of the whole system is adjusted, and the safety of a reactionin the fuel cell stack is guaranteed.

The invention belongs to the technical field of water quality monitoring of water body, and provides a deep aquifer multiparameter in-situ monitoring apparatus. The deep aquifer multiparameter in-situ monitoring apparatus comprises a ground control management module, a microprocessor and a detection module which are connected in order. According to the invention, a multiparameter data processing module is arranged in the ground control management module, a linear fitting module is arranged in the microprocessor, a temperature compensating module and a voltage drift compensation module which are respectively used for performing temperature compensating and voltage drift compensation on the linear fitting module, the microprocessor is connected with the ground control management module through a CAN bus communication circuit, a pH detection circuit is arranged in the detection module, and a pressure temperature sensor detection circuit is used for testing temperature and pressure of deep aquifer. The invention also provides a deep aquifer multiparameter in-situ monitoring method. The method comprises the steps of correction of a detection module, placing, measurement, correction of pH value and the voltage value of a standard solution, establishment of a pH linear equation and calculation. The conception of the in-situ monitoring apparatus is ingenious, and the technical problem of authenticity of the to-be-detected information is easily weakened through sampling and monitoring in the prior art can be solved.

The invention discloses a power supply plug-in connector for an electronic device of a locomotive network control system. The connector is characterized by comprising a transformation rectifying and filtering module, a +3.3V direct current power module, a +5V direct current power module and a +5V voltage module with electrical isolation, wherein the +5V voltage module is used for converting direct current voltage provided by the transformation rectifying and filtering module into +5V direct current voltage and realizing electrical isolation so as to meet the power supply requirement of a special power supply device. Due to the adoption of the technical scheme, a 110V direct current power supply used by a locomotive is directly converted into the needed +3.3V direct current power supply and +5V direct current power supply, +5V voltage output with the electrical isolation is provided, and the requirement on the power supply of the electronic device of the locomotive network control system is met.

The invention discloses a high-performance optical fiber board card power supplying unit. The high-performance optical fiber board card power supplying unit comprises a port A and a port B. A first one-level power management chip is connected to the port A, a plurality of two-level power management chips are connected to the first one-level power management chip, and a plurality of second one-level management chips are connected to the port B. The high-performance optical fiber board card power supplying unit has the advantages that due to the fact that power is supplied to all modules independently on an optical fiber board card, and all modules are physically separated, requirements for power of each module are met, all modules are not affected mutually, and superior performance is achieved.

The invention discloses a reactance matching type and distributed type fused ultra-wideband power chip circuit. The respective advantages of a reactance matching type circuit matching structure and adistributed type circuit matching structure are fused; a reactance matching type structure is adopted in a radio frequency power output stage of the ultra-wideband power amplifier circuit, so impedance matching can be easily and accurately output to improve the efficiency; and the power driving stage adopts a distributed structure, so the circuit bandwidth is easy to expand and the gain flatness is easy to improve. The advantages of the two circuit structures are fused, and the performance of the millimeter-wave ultra-wideband high-power monolithic integrated power amplifier can be greatly improved.

A gas-injection and electric-injection integrated hybrid driving device is comprises a plurality of propeller bodies arranged in an array, a water inlet and an injection port are arranged on the propeller body, an injection passage is arranged between the water inlet and the injection port in the propeller body, a heating plate and an injection electrode are arranged in the injection passage, anda ground electrode is arranged at an end of the propeller body provided with the injection port. The invention has the advantages of high specific impulse, high injection efficiency, long service time, low power consumption and high thrust precision, and can realize enough propulsion force and high precision at the same time.