38results about How to "Improve cold start speed" patented technology

The invention discloses a thermal management system for a fuel cell vehicle, comprising a hydrogen fuel cell stack, a hydrogen catalytic combustion reactor, an electric heater, a frequency conversion fan, a water supply tank, a frequency conversion water pump, a deionization device, a particle filter, and a bypass valve , temperature sensor and controller. The invention discloses a control method for a thermal management system of a fuel cell vehicle.

The invention discloses a heat pump integrated fuel cell vehicle thermal management system with waste heat utilization, comprising a heat pump circulation loop, a motor circulation loop, a fuel cell circulation loop, and a battery pack circulation loop; Other circulation loops are connected to form an integrated thermal management system. The first plate heat exchanger is connected to the fuel cell circulation loop, the second plate heat exchanger is connected to the motor circulation loop, and the third plate heat exchanger is connected to the battery pack circulation loop. Connected; through the heat pump integrated thermal management system, the heat pump cycle can use the environment or other heat sources to assist heating the fuel cell to achieve low temperature cold start; the use of the fuel cell and motor circulating waste heat to form a multi-heat source heat pump air conditioner to improve the heat pump at low temperature The shortcomings of low energy efficiency value, And can avoid the outside heat exchanger frost.

The invention discloses a nitrogen oxide sensor, which comprises a first solid electrolyte layer, a second solid electrolyte layer and a third solid electrolyte layer. The side of the second solid electrolyte layer facing the third solid electrolyte layer is provided with a common electrode. The side of the second solid electrolyte layer facing the first solid electrolyte layer is provided with a main pump electrode, an auxiliary pump electrode and a measurement pump electrode, the side of the first solid electrolyte layer facing away from the second solid electrolyte layer is provided with a reference electrode, and the third solid electrolyte layer is provided with a reference electrode. A heater is provided on the side of the electrolyte layer facing the second solid electrolyte layer. The nitrogen oxide sensor in the present invention shortens the distance between the main pump electrode, the auxiliary pump electrode, the measuring pump electrode, the common external electrode and the heater, improves the heating efficiency of the nitrogen oxide sensor, and reduces the power consumption in the working state , and at the same time can prolong the service life of nitrogen oxide sensor.

The embodiment of the invention discloses a browser cold start method and device. The method includes: reading the data files sequentially from the storage position of the data files of the browser in the disk according to the acquired starting instructions of the browser, and storing the read data files in the memory; Find and read the corresponding data file from the internal memory according to the requirement for the data file during the startup process of the server. The technical solution provided by this embodiment can reduce the seek operation of randomly reading the disk, avoid page faults, and optimize the interface display effect when the browser is cold started.

The invention relates to a method for starting a proton exchange membrane fuel cell under a low-temperature state. A mixed gas is introduced to a positive electrode for catalytic pre-heating, a tail gas of the positive electrode is introduced to a negative electrode, so that the mixed gas which does not react generates catalytic reaction in the negative electrode, and the effect of simultaneouslyrising temperatures of the negative electrode and the positive electrode is achieved. The method is improved on the basis of a traditional catalytic cold-starting method, the negative electrode and the positive electrode can simultaneously generate catalytic reaction, heat is provided for the cell, low-temperature starting at -45 DEG C even a lower temperature range can be achieved, fuel can be fully utilized, the starting power consumption of the cell is reduced, and the low-temperature starting time is greatly reduced.

The invention relates to a device for starting a proton exchange membrane fuel cell at a temperature below zero degree, wherein a mixed gas is catalytically preheated at an anode, and tail gas of theanode is introduced into a cathode, so that an unreacted mixed gas is catalytically reacted at the cathode, and the effect of simultaneous heating of the cathode and the anode is realized. The invention is improved on the traditional catalytic cold start device, the cathode and the anode can simultaneously generate catalytic reaction and provide heat to the battery, which can realize low temperature start-up in the temperature range equal to -45 DEG C or below, fuel is fully utilized, the battery start-up power consumption is reduced and the low temperature start-up time is greatly reduced.

The invention relates to the technical field of oxygen sensors, and particularly relates to a conical double cell wide-band oxygen sensor and a manufacture method thereof. The sensor comprises a conical zirconium oxide tube and a conical heating rod, wherein a reference air electrode is arranged on the inner surface of the conical zirconium oxide tube, a measuring electrode, a mixing cavity and a diffusion layer are sequentially arranged on the outer surface of the conical zirconium oxide tube, the reference air electrode arranged on the inner surface of the conical zirconium oxide tube and the measuring electrode arranged on the outer surface of the conical zirconium oxide tube form a concentration cell unit, on the basis, a compact zirconium oxide coating is arranged so as to seal the interior, and a diffusion hole is reserved, a pump cell external electrode is arranged on the outer surface of the compact zirconium oxide coating, the pump cell external electrode and the measuring electrode wrapped in the compact zirconium oxide coating form a pump cell unit, and a porous external electrode protective layer is arranged on the outer surface of the compact zirconium oxide coating. According to The conical double cell wide-band oxygen sensor, the heating efficiency of sensors can be effectively improved, and the volume of like products can be remarkably reduced.

The invention discloses a heat management system for lithium battery packs. The heat management system comprises a battery box body for installing batteries, a temperature adjusting device arranged atthe outer side of the battery box body and a battery box body cover arranged at the top part of the battery box body, wherein the battery box body comprises a bottom plate, U-shaped end-part baffle plates arranged at the two ends of the bottom plate and U-shaped heat-conducting partitioning plates arranged between the two end-part baffle plates; the opening ends of the two end-part baffle platesare oppositely arranged, and the heat-conducting partitioning plates are horizontally arranged; gaps matched with the single batteries in shape and size are arranged between the end-part baffle platesand the heat-conducting partitioning plates and between the heat-conducting partitioning plates; a first phase-change material composite plate is arranged in a cavity formed by the end-part baffle plates; a second phase-change material composite plate is arranged in a cavity formed by the heat-conducting partitioning plates. The heat management system disclosed by the invention has the beneficialeffects that the temperature and the temperature difference of the battery packs are controlled to be in a reasonable range, the problem of cold start of the car and the problems caused by the north-south geographic positions and the summer-winter environmental temperatures to the energy effect, the service life and the safety of the batteries can be improved.