16 results about "Electric cars" patented technology

The present invention relates to an electric car which has a battery pack at a constant state of maximum power discharge and to a method of efficiently controlling a motor with due consideration for rechargeable power levels. The control method according to one embodiment of the present invention, comprises the steps of: calculating estimated power levels required, based on current power consumption levels, for providing current from the battery pack to all parts of an electric car, and the required torque according to a driver's activation of the accelerator; comparing the estimated power levels required with the maximum possible power discharge from the battery pack; and enabling maximum possible torque from the motor when the estimated power levels required exceeds the current maximum possible power discharge from the battery pack.

A safe power supply circuit of the invention comprises a single-chip microcomputer control circuit, a loop protecting circuit and a voltage reducing and stabilizing power supply circuit which supplies electric power to the single-chip microcomputer control circuit. The output end of the loop protecting circuit is connected with a voltage detecting circuit. One end of the output end of the voltage detecting circuit is connected with the single-chip microcomputer control circuit, and the other end is connected with a loop switch protecting circuit. The output end of the loop switch protecting circuit is connected with a current detecting circuit. The output end of the current detecting circuit is connected with the single-chip microcomputer control circuit. The output end of the single-chip microcomputer control circuit is connected with a voltage detecting circuit. The safe power supply circuit can settle the problems of no protecting measures for overvoltage, overcurrent and reverse charging; and incapability of realizing automatic matching between a charger and an anode and a cathode of a battery. Higher safety and higher user-friendly performance of an electric vehicle are realized.

The invention discloses a connecting piece for a car frame, a car frame assembly and an electric car. The car frame connecting piece comprises a connecting piece base. The connecting piece base is atleast provided with a front longitudinal beam connecting part, an A column lower inner plate connecting part and a threshold longitudinal beam connecting part; when orienteering is performed along thecar frame, the front longitudinal beam connecting part is located in the front of the connecting piece base 110, the A column lower inner plate connecting part is located at the outer side of the connecting piece base 110, and the threshold longitudinal beam connecting part is located at the rear part of the connecting piece base 110; the connecting piece base comprises an outer side connecting piece and an inner side connecting piece with transverse orienteering along the car frame. The car frame connecting piece has the low casting difficulty by designing the split structure of the inner side and outer side mode, and the car frame connecting piece is suitable for being widely applied; the connecting strength of a car frame and a key joint is enhanced, and the collision safety performance is improved.

The invention discloses a CAN communication controller of an electric vehicle. The CAN communication controller comprises a base formed by pressure casting, and a box housing pressed and fastened above the base, wherein an epoxy resin PCB is connected to the base; a 30-pin terminal, a 60-pin terminal, power MOS transistors, a positive phase-crossing flow guide copper sheet and a negative phase-crossing flow guide copper sheet are welded on the epoxy resin PCB in sequence through wave soldering; flow guide copper columns are perpendicularly connected to the epoxy resin PCB; silica gel gaskets are arranged above the power MOS transistors; 6063 aluminum section pressing strips are fixed and locked at the upper ends of the silica gel gaskets by using fixing MOS bolts; a plurality of holes for the flow guide copper columns to penetrate through are formed in the box housing; and silicon rubber seal rings are arranged at the upper ends of the flow guide copper columns. The CAN communication controller has the beneficial effects of good heat dissipation property and good seal property.

The invention discloses a low-power-consumption control system of a battery manager. The system comprises the battery manager, a main power battery, an assistant battery, a comprehensive controller and an intelligent switch; the battery manager is arranged on the main power battery and used for performing balance management for the main power battery; the battery manager is respectively connected with the assistant battery and the comprehensive controller; a DC power module is arranged between the battery manager and the comprehensive controller; the comprehensive controller is connected with the assistant battery through the intelligent switch. With the adoption of the low-power-consumption control system of the battery manager, the phenomenon of continuous electricity consumption of the main power battery caused by power consumption of the battery manager can be avoided, thus the electricity quantity of the main power battery can be ensured, and the travel distance of an electric car can be greatly increased when the system is applied to a lithium battery type electric car; meanwhile, a lithium battery can be stored for a long time according to the technology, and the lithium battery is avoided electricity loss after long-distance transportation or long-time storage in a warehouse and can be used as usual.

The invention discloses a novel aqueous magnesium metal secondary battery and a preparation method thereof. The preparation method comprises the following steps of: selecting a safe and nontoxic magnesium alloy as an anode; selecting a common cathode material with a large-size ion diffusion channel, conductive carbon black and a binder for size mixing to prepare a cathode for the aqueous magnesium metal battery; and dissolving magnesium salt and an additive in an aqueous/organic mixed electrolyte with a certain volume ratio through ultrasonic assistance, and using the electrolyte to assemble the aqueous magnesium metal secondary battery. The assembled aqueous magnesium metal secondary battery can stably circulate for more than 60 times under large current, so that the cycle life of the battery is greatly prolonged, the output voltage is high, the specific capacity is large, and the battery has high output voltage of 1.6 V or above and high reversible specific capacity of 197 mA h g <-1 >. The battery has important potential application value, is low in dependence on use scenes and wide in application range, and has wide application prospects in the fields of power grid energy storage, low-speed electric vehicles, flexible wearable power supply and the like.

The invention relates to die pressing concrete, in particular to an automatic arrangement die-pressing concrete die-pressing device. The technical problem of the invention is to provide the automatic arrangement die-pressing concrete die-pressing device. According to the technical scheme, the automatic arrangement compression molding concrete compression molding device comprises a vehicle body frame, electric vehicle wheels, a storage battery, a mold placing system, a compaction system and the like; and the upper parts of the electric wheels are connected with the body frame. Automatic placement and arrangement of the pressed film concrete molds are achieved, by means of positioning angle measurement, it is guaranteed that the molds can still be arranged in order by adjusting the angle in the device when the device turns around, and the situation that the molds cannot be accurately matched due to the fact that the angle between the device and a road surface is changed is prevented; and meanwhile, automatic pressing forming is conducted after placing and arranging are conducted, and the effect of cleaning the used mold plate is achieved.

The invention provides a motor controller (10), a power assembly (800), a control method and an electric vehicle (900), and relates to the technical field of electric vehicles (900). The input end of the motor controller (10) is connected with a power battery pack (30), the output end of the motor controller (10) is connected with a three-phase motor winding of a motor (20), and the motor controller (10) comprises an inverter circuit (101) and a controller (102). Wherein the input end of the inverter circuit (101) is the input end of the motor controller (10), and each phase of output end of the inverter circuit (101) is connected with one phase of motor winding of the motor (20). And the controller (102) is used for controlling the inverter circuit (101) to output current to the three-phase motor windings at the same time, and the current input into each phase motor winding sequentially and alternately reaches preset current. By using the motor controller (10), the heating capability of the motor winding is fully utilized to heat the power battery pack (30), the symmetry and reliability of the motor (20) are ensured, the use of an additional heating device to heat the power battery pack (30) can be avoided, and the occupied space and cost are reduced.

The invention discloses an energy-saving electric vehicle safety lamp. The energy-saving electric vehicle safety lamp comprises a vehicle shell, an installing box, a lampshade and an installing plate;the installing box is fixedly installed on the upper side of the interior of the vehicle shell through bolts, and one end face of the installing box is closely attached to the vehicle shell; a lamp body is adhered to the end face, closely attached to the vehicle shell, of the installing box and comprises the lampshade and the installing plate, and the lampshade and the installing plate are fixedly connected together through screws to form a hollow structure; the lampshade is located on the outer side of the vehicle shell and protrudes out of the vehicle shell in an arc shape; and the installing plate is located in the installing box, an arc-shaped through groove is formed in the portion, located behind the installing plate, of the interior of the installing box, an opening of the arc-shaped through groove faces the installing plate, and sliding blocks are welded to the portions, located in the arc-shaped through groove, of the tails of first protective strips and second protective strips. The energy-saving electric vehicle safety lamp not only has a protective effect on the lamp body, but also has the effects of being convenient for walking and capable of achieving emergency helpseeking, and can be generally used and popularized.

The invention discloses a preparation method of an environment-friendly electric car cable aluminum alloy rod. The environment-friendly electric car cable aluminum alloy rod comprises the following raw materials in percentage by weight: 0.01-0.6% of Fe, 0.4-1.2% of Co, 0.2-1.0% of Ni, 0.01-0.3% of Mg, 0.01-0.3% of Sr, 0.01-0.05% of Ge, 0.005-0.28% of Cu, 0.01-0.5% of Zr, 0.01-0.3% of Sn, 0.03-0.15% of montmorillonite and the balance of aluminum. The preparation method of the environment-friendly electric car cable aluminum alloy rod comprises the following steps: casting an aluminum alloy ingot, carrying out solid solution treatment for a first time, carrying out homogenization treatment, conventionally cold rolling and carrying out solid solution treatment for a second time to obtain an aluminum alloy conductor.

The invention discloses a street lamp with a protective umbrella body. The street lamp comprises a lamp post; the bottom end of the lamp post is fixedly connected with a base; a connecting rod is fixedly connected to the upper portion of the left end face of the lamp post. The tail end of the connecting rod is connected with a lampshade; an LED light-emitting body is mounted in the lampshade. A sliding sleeve sleeves the outer surface of the middle part of the lamp post in a sliding manner; an umbrella body fixedly sleeves the outer surface of the lamp post and is positioned above the slidingsleeve; an electric push rod is fixedly mounted in the lamp post; a socket is fixedly mounted on the outer surface of the lamp post and located below the umbrella body; when sunlight irradiation intensity is large or it rains and snows, the electric push rod can be started through an external switch, the electric push rod drives a connecting plate and the sliding sleeve to move upwards to drive the umbrella body to be unfolded, passersby hide below the umbrella body and protection is provided, and the passersby can sit down to have a rest through the base; and charging of electric vehicles orother electronic equipment is facilitated through an arranged socket.

The invention provides an electric car battery charging and replacing device which comprises a street lamp pole. A storing box with the cross section being of a circular ring shape is arranged on theperiphery of the bottom of the street lamp pole in a wrapping manner. The storing box is formed by splicing a plurality of independent unit box bodies with cross sections of a fan shape. A plurality of strip openings are formed in the edge of a fixing plate. A limiting rod capable of penetrating into the corresponding strip opening is vertically arranged on the top of the edge of the inner side ofeach box top cover. A sharing car lock for limiting the corresponding limiting rod into the corresponding strip opening is arranged on the portion, located on the inner side of each strip opening, ofthe fixing plate. A lower louver heat dissipating window is arranged on the lower portion of the outer side wall of the box. An upper louver heat dissipating window is arranged on a vertical partition plate. The electric car battery charging and replacing device has the beneficial effects that a battery replacing device is combined with the street lamp pole on the street side, existing public resources are utilized reasonably, the street lamp pole plays a more important role, batteries of a sharing electric car are more convenient to replace, the resources are saved, improvement can be carried out conveniently on the basis of an original street lamp pole, and the sharing electric car can be applied and popularized beneficially.

The embodiment of the invention discloses an electric vehicle control method and an electric vehicle controller. The method comprises the steps of 1, when a starting signal of a user is received, outputting a first starting driving signal comprising a forward driving signal and a reverse driving signal according to the starting signal, wherein the duty ratio of the first starting driving signal isthe same as that of the starting signal, and the direction of current applied to the motor by the reverse driving signal is opposite to that of current applied to the motor by the forward driving signal; sampling a first counter electromotive force of a motor suspension phase when the forward driving signal is applied to the motor, and sampling a second counter electromotive force of the motor suspension phase when the reverse driving signal is applied; and outputting a second starting driving signal according to the difference between the first counter electromotive force and the second counter electromotive force. The accurate commutation time is obtained according to the variation trend of the difference between the two counter electromotive forces, and a starting signal is applied tostably start the motor. The problem that the motor control is out of step when a driving signal is generated by using a zero-crossing detection method in the prior art is solved.