3515 results about "Automotive battery" patented technology

The invention discloses a method for estimating battery health of an electric automobile, which relates to methods for estimating battery health according to voltage characteristics of a battery charging end. The method solves the defect that battery parameters, such as impedance, internal resistance and the like, need to be calculated while estimating battery health in the prior art. The method is used for estimating battery health. The method comprises the following steps of: emptying a new battery to be detected, and fully charging the new battery to be detected, and in the fully charging process, recording a voltage-time curve and a charge capacity-time curve of charging of the new battery to be detected; calculating actually usable capacity Qnew of the new battery to be detected; setting a threshold of V / dQ; calculating the charged capacity of the new battery to be detected from the time when the threshold of dV / dQ is realized to the time when the battery is fully charged during the charging process; building a relation curve of the open-circuit voltage and SOC (State Of Charge) of the new battery to be detected; estimating a SOCocv, then, calculating theoretically usable capacity Qtest-full of the attenuated battery; and obtaining the health of the battery to be detected according to the attenuated theoretically usable capacity QoId and the actually usable capacity Qnew of the battery.

The invention discloses a fast power transformation station of a battery box of an electric automobile and a replacement method of the battery box. The power transformation station at least comprises the following devices: an automobile positioning platform, a battery box lifting and replacing platform, a stacking machine, a battery box storage rack, a logistics transmission port of the battery box and a delivery roller way which are symmetrically arranged relative to the longitudinal movement axis of the stacking machine, the simultaneous working of the two power transformation systems can be achieved, and the space utilization rate and the power transformation efficiency are improved. The fast power transformation station also comprises a power supply system which is arranged on a roof and consists of a solar photovoltaic power generation battery board; and self sufficiency of power can be achieved by virtue of the solar energy, the power supply of the equipment in the station or the charging for the battery box in the station are met. The invention also provides the replacement method of the battery box of the power transformation station. According to the power transformation station, the distribution is reasonable, the space utilization rate is high, the work of the equipment is reliable and simple, and the power transformation process is fast, so that the power transformation time can be shortened, the power transformation fault is reduced, and the compatibility for different vehicles and different battery boxes is also improved.

Provided is an apparatus that includes temperature-sensitive functional means for performing pre-configured functionality (such as video recording), mounting means for mounting the apparatus to a motor vehicle, and heating means for heating the functional means. Detection means detects at least one of: whether an automobile battery in the automobile is being charged and whether an engine block in the automobile is being heated. Control means controls the heating means and initiates a heating process upon detection by the detection means.

The invention provides a vehicle battery thermal management system, and belongs to the technical field of automobile batteries. The vehicle battery thermal management system solves the problem that battery thermal management in the prior art is not accurate and timely and comprises a first liquid circulation loop, wherein the first liquid circulation loop consists of a battery pack, a water tank, a water pump and a radiator; a cooling structure and a heater are sequentially connected between the water pump and the battery pack to form a second liquid circulation loop; solenoid valves which only control respective liquid circulation loop are arranged on the first liquid circulation loop and the second liquid circulation loop; a temperature sensor is arranged on the battery pack; a battery management unit, the temperature sensor, the water pump, a first solenoid valve, a second solenoid valve, the cooling structure and the heater are connected with a complete vehicle controller; and the complete vehicle controller can receive a detection signal of the temperature sensor, process the detection signal, and send a control signal to control the operation of the water pump, the two solenoid valves, the cooling structure, the heater and the battery management unit. The system can accurately and timely judge a battery thermal environment and perform effective adjustment.

The car battery system of the present invention is provided with battery blocks 2 that retain a plurality of battery cells 1 in a stacked configuration and have terminal planes 2A, which are coincident with terminal surfaces 1A established by positive and negative battery cell 1 electrode terminals 13; and with battery state detection circuits 30 that connect with the electrode terminals 13 of each battery cell 1 to detect the condition of each battery cell 1. The car battery system implements a battery state detection circuit 30 on a circuit board 7, 87, and the circuit board 7, 87 is mounted on a battery block 2 in a position opposite the terminal plane 2A of the battery block 2. Further, the positive and negative electrode terminals 13 of each battery cell 1 are connected with a circuit board 7, 87 for connection to a battery state detection circuit 30.

An improved protection system for a battery pack mounted between the passenger cabin floor panel of an electric vehicle and the driving surface is provided, the system utilizing a ballistic shield mounted under the electric vehicle and interposed between the battery pack enclosure and the driving surface, where the ballistic shield is spaced apart from the enclosure bottom panel. A layer of a compressible material may be interposed between the ballistic shield and the battery pack enclosure.

Testing or diagnostics are performed on an electric vehicle. The vehicle is operated and current flow through a system of the vehicle is monitored. A voltage related to the system is also monitored. Diagnostics are provided based upon the monitored voltage and the monitored current.

The invention provides a control system for heat management of an electric vehicle. The control system is characterized in that the system comprises a refrigerant circulating system, a coolant circulating system and a battery pack temperature control system, wherein the refrigerant circulating system is communicated with the battery pack temperature control system via a water cooler, and the coolant circulating system is communicated with the battery pack temperature control system via a three-way water valve, so the three systems form an intercommunicating and circulating control system to control the temperature in the carriage and the working temperature of the electrical devices of the battery pack. The control system has the following positive effects: effective heat management can be carried out on each part of the electric vehicle; the problem of heating difficulty of the electric vehicle is solved by adopting the residual heat of the electrical devices in an economical and energy-saving manner; preheating and cooling of the power battery of the electric vehicle are well controlled; and the working temperature of the battery and electrical devices of the electric vehicle can be controlled, thus realizing complete heat system management of the electric vehicle.

The invention discloses a thermal management system and a thermal management method of a battery pack of an electric automobile. The thermal management system comprises the battery pack and further comprises a water pump, wherein the battery pack comprises a cooling plate for cooling liquid to flow circularly; the water pump is connected with the battery pack; the water pump is connected to a water inlet of a three-way valve; each of two water outlets of the three-way valve is connected with a PTC (Positive Temperature Coefficient) heater and a radiator; the PTC heaters and the radiators are connected on the battery pack; and all components mentioned above are connected with one another through cooling liquid pipelines. The thermal management system disclosed by the invention is a feasible and reliable thermal management structure by which the battery pack is cooled in a way of liquid cooling, wherein heat of batteries is taken away by the cooling plate, and isolation of the cooling plate from the batteries is achieved by adopting a heat-conducting insulation board; in addition, radiating and cooling abilities of the entire battery pack are achieved by employing the water pump, the radiators, the PTC heaters, etc.

The invention discloses an automatic vehicle-mounted mobile power charging and exchanging station for an electric vehicle and a method for quickly exchanging a battery. The automatic vehicle-mounted mobile power charging and exchanging station comprises a tractor, a semitrailer and a battery box storage rack, a battery box, an automatic power exchanging device, a charging system, an electric quantity counting system, an automatic control unit and the like which are arranged on the semitrailer, wherein the storage rack can store a plurality of battery boxes three-dimensionally; the battery boxes are standard exchanging modules connected with a battery house on the lower part of a vehicle body by using a plurality of quick-opening locking bolts; the automatic power exchanging device comprises a lifting table, a transmigration machine, a shifting machine and a plurality of unlocking / locking bushings; the automatic power exchanging device can automatically transport and store the battery boxes, and lock or unlock the battery boxes and the battery house due to mutual matching of the lifting table, the unlocking / locking bushings and the quick-opening locking bolts, so automatic dismantling and exchange of the battery boxes can be realized; and the charging system is used for automatically charging the battery boxes. The station is complete in system, compact in structure, flexible in maneuvering, low in investment and short in construction period, so the automatic power charging / exchanging requirement of the battery of the electric vehicle can be met.

A compact battery charger for charging a battery comprising: a microprocessor; a set of terminals operatively coupled to said microprocessor and configured to electrically couple with an automotive battery; and an internal lithium ion battery, wherein the internal lithium ion battery is a lithium ion battery, wherein a single-ended primary-inductor converter may be configured to receive an input voltage of 5 VDC to 20 VDC and output a predetermined DC charge voltage to said internal lithium ion battery.

The invention relates to the technical field of battery management systems for electric vehicles, and provides a battery management system for a pure electric bus. The battery management system has three working modes of on-vehicle running, whole vehicle emergent charging and quick replacing, and mainly comprises a main control module, a detection module, a handheld device, a monitoring computer and an on-vehicle battery pack. The battery management system can transmit the obtained real-time battery state and detailed information on the on-vehicle battery pack after processing to a whole vehicle controller, an on-vehicle instrument, and the monitoring computer for online monitoring; and under the whole vehicle emergent charging and the quick replacing modes, the battery management system can perform data interaction with a charging device to achieve safe charging. The battery management system is also provided with the handheld device, and can achieve voltage acquisition of a single-box battery, and the debugging and the fault diagnosis of the detection module. The battery management system has the advantages of strong communication functions, perfect charging management, complete auxiliary equipment, and high safety, reliability and stability.

A method of setting the operational mode of an electric vehicle is provided, where the operational mode is selected from a plurality of operational modes that include at least a Battery Life mode and a Standard mode, wherein the Battery Life mode is configured to select operating and charging parameters that emphasize battery health and battery life over vehicle range and / or vehicle performance. The system includes a thermal management system for maintaining the vehicle's battery pack to within any of a plurality of temperature ranges, and a charging system for charging the vehicle's battery pack to any of a plurality of minimum and maximum SOC levels and at any of a plurality of charging rates.

The invention discloses a battery change system of a portable electric car and a change method thereof. The system is provided with a foldable electric hydraulic lifting platform, a battery box lifting platform trolley, a battery box pallet and an integrated control platform. In the foldable electric hydraulic lifting platform, foldable horizontal and vertical scissor mechanisms are adopted so that the storage and transportation spaces are compressed and the carrying is convenient; and during the operation, the car is lifted through the vertical scissor mechanism so that the battery box lifting platform trolley can enter the lower side of the car to dismount and change the batteries. An adjusting and positioning battery box with three degrees of freedom, which is remotely controlled to realize transverse movement, longitudinal movement and horizontal rotation, and a horizontal rotation platform which is lifted by means of the a double-layer scissor mechanism are loaded on the battery box lifting platform trolley. By means of a video monitoring camera and a laser positioner, the battery box can be correctly positioned by the battery box pallet; and the operations of the devices are remotely controlled by the integrated control platform. Through the invention, the difficulties that the car batteries cannot be changed and electricity change is badly needed during the running of the car are solved and the batteries of the electric car can be directly changed without an electricity change station.

The invention discloses a battery replacing system of an electromobile battery replacing station. The battery replacing system comprises a charging rack, stacking equipment, a temporary storage rack, electric-switching equipment and a charger system. The battery replacing system is characterized in that: the stacking equipment is used for carrying batteries between the charging rack and the temporary storage rack; the electric-switching equipment is used for carrying the batteries between the temporary storage rack and the electomobile; the stacking equipment has translation, hoisting and loading / unloading functions and is used for carrying the batteries between the charging rack and the temporary storage rack; and the electric-switching equipment has translation, hoisting, rotating, inclination angle adjustment and loading / unloading functions, and is used for carrying the batteries between the temporary storage rack and an electromobile. Accurate positioning of a battery box by the electric-switching equipment is realized in a way that a self-carried laser transducer scans a light-reflecting triangular panel arranged on an electromobile battery box frame. Due to the different designs of the charging rack and the temporary storage rack, the stacking equipment and the electric-switching equipment coordinately work together, and then the electromobile battery replacing efficiency is effectively improved.

A motorized portable appliance which monitors, and automatically selects, one of multiple power sources. The motorized portable appliance includes an electric motor, a secondary battery and at least one other source of electrical power, and an automatic control to switch between the secondary battery and the other source of electrical power, which may be mains electrical power, an external secondary battery, an on-board secondary battery, an automotive battery, a solar photovoltaic array, or a primary battery. Power conditioning circuitry converts power from the various power sources to a form compatible with the electric motor and recovers remaining power from depleted primary batteries.

The invention discloses a rapid installation and rapid exchange system of an electric automobile battery and a rapid installation and rapid exchange method thereof. The rapid installation and rapid exchange system comprises a battery pack, an installation plate and a battery pack protection frame arranged on an automobile body, wherein four corners of the installation plate are provided with a hoisting ring respectively, four corners of the protection frame are provided with a lock body respectively, and the lock body comprises a latch hook, a latch hook drive motor and a sensor. When the battery pack is arranged on the installation plate and hoisted to the lower part of the automobile body together with the installation plate, the hoisting ring on the installation plate hoisted up contacts the root part of the latch hook to cause the latch hook to rotate around a fixed shaft thereof and penetrate through the hoisting ring to be connected and locked with the battery pack, therefore the battery pack is fixed under the floor of the automobile body. The proposal provided by the invention is practical, reliable, simple, convenient and easy to operate, thus being capable of not only guaranteeing the rapid exchange and rapid installation of the battery pack but also meeting the arrangement requirements of most automobiles.

The invention provides an electricity replacing platform for replacing batteries of electromobiles and an electricity replacing mobile platform and a rapid replacing system. The electricity replacing platform for replacing batteries of electromobiles comprises an upper board used for bearing the replaced batteries; an unlocking device mounted on the upper surface of the upper board and used for unlocking a battery locking device mounted on the electromobile; and a mobile drive device mounted in connection with the upper board through the drive output end and used for driving the upper board to move in a horizontal direction. According to the electricity replacing platform, the batteries locked on the bottom of the electromobile can be unlocked by utilizing the unlocking device, the unlocking point of the battery locking device is automatically aligned, and the automatic unlocking is achieved in the moving process, the whole process is completely automated, manual interference is not necessary, and the replacing efficiency of batteries can be increased. Additionally, the angle of the upper board relative to the battery unlocking position can be adjusted through the mobile drive device, thus under the condition that the whole battery replacing mobile platform is not moved, the unlocking point of the batteries is automatically adapted, and the unlocking efficiency is further increased.

The invention discloses an electric vehicle power battery state-of-energy (SOE) estimation method, and belongs to the technical field of electric vehicle battery management systems. According to the method, changes of battery voltage are considered in the estimation process, and the battery state and the vehicle driving range can be more comprehensively reflected compared with an existing battery state-of-charge (SOC) estimation method. The electric vehicle power battery state-of-energy estimation method is characterized by comprising the following steps of (1) initialization, wherein a system calculates an initial SOE value according to the current battery temperature, voltage, the state before standing and the standing time; (2) circulation, wherein the system corrects a battery balance electromotive force (EMF)-SOE relation curve and the battery rated energy by collecting the battery temperature, charging / discharging multiplying power and the recorded battery using frequency. On the basis of the principle of conservation of energy, the battery energy variable quantity is calculated, the initial SOE value is utilized for calculating the SOE value at the next moment, and continuous circulation is carried out so that the SOE value can be updated in real time.

An electric vehicle battery pack replacement system. The hardware of said system consists of computers, a first palletizing robot (608), a second palletizing robot (609), a ferry robot (199), a four-post lift (22), a ferry robot track (198), a first conveyance line (607), and a second conveyance line (610). Connection between said hardware and an electric vehicle onboard device is achieved by means of various forms of computer-based supervisory control software, wired / wireless internet, and a 3G / 4G wireless network, creating a man-machine dialogue system that utilizes supervisory control center computers to control, command, and guide electric vehicle battery replacement. The system is quick, safe, and prevents drivers unskilled at operating battery replacement systems from causing an accident by replacing a battery incorrectly. The system is well-designed, structurally simple, low in cost, and occupies little space.

A portable power storage and supply system having means for AC charging, DC charging, AC discharging and DC discharging wherein any one or any combination of the AC and DC charging and discharging can be carried at one time. The system includes an inverter, one or more battery modules and control means for controlling the AC and DC charging and discharging functions for safe and efficient operation. DC charging can include energy from a renewable energy source. The battery modules are separable from the system for providing DC energy for energizing automotive battery jumper cables or for energizing DC powered devices.

A car jump starter having warning LED panel is provided. The car jump starter having warning LED panel is configured to deliver power to automobile battery of the car and the car jump starter having warning LED panel includes case and LED panel. The case includes output ends, input end, battery and output module. The output ends are disposed at one side of the case and the output ends are configured to be electrically connected with external electronic device. The input end is disposed at one side of the case and the input end is configured to be electrically connected with external power. The battery is disposed in the case. Then, the output module is electrically connected with the battery, and the output module is configured to deliver power to the automobile battery. Moreover, the LED panel is disposed on the case, and the LED panel includes multiple LED modules.

The invention discloses an automatic battery quick replacement system and method for electric vehicles. The system comprises a battery bin arranged at the lower part of a vehicle body, a battery box and a lifting platform. The sides of the battery bin are provided with a plurality lifting lugs; the sides of the battery box are provided with a plurality of spring bolts with pulling ropes; the lifting platform is provided with a plurality of unlocking / locking rods; and the mounting and dismounting of the battery box are realized through the mutual coordination of the lifting platform, the unlocking / locking rods, the spring bolts and the lifting lugs. When a battery is dismounted, the lifting platform supports the battery box, the unlocking / locking rods jack the pull ropes to separate the bolts from the lifting lugs, and the lifting platform descends together with the battery box so as to separate the battery box from the batter bin. When the battery is mounted, the battery box is jacked to be in place of the battery bin by the lifting platform, the unlocking / locking rods descend to loose the pull ropes, and the bolts are closed and penetrate through the lifting lugs by virtue of the tension of the spring so that the battery box is connected with the battery bin; meanwhile, a socket on the battery box is automatically in plugging connection with a plug on the battery bin. The automatic battery quick replacement system is convenient and reliable and can meet the requirement for automatic and rapid replacement of the battery box of an electric vehicle.

A flashing warning light apparatus (10) for warning motorists in oncoming traffic that an object such as a car is stopped near the highway ahead. The apparatus (10) includes a housing (24) with an array of lights (12) on the front and possibly also the rear faces. Sensors (14) front and back sense oncoming traffic. A switch (36) allows the user to cause the arrays of lights (12) to flash continuously or only when oncoming traffic is sensed. The device may be powered by the car battery through a cigarette lighter adapter (34), dry cell batteries (28) or a solar cell (44).

A load is connected to a first battery group. The first battery group and a second battery group are connected in series to each other. A bidirectional DC / DC converter for electric power migration between the first battery group and the second battery group is provided.

The invention provides a method for evaluating state of health of a battery in real time and belongs to the technical field of batteries. By the method, realtime estimation of the state of health of the battery is realized, shared problems of a charging and discharging method, a voltage differential method / capacity increment method and an internal resistance measuring method are solved, the difficulty in online estimating the SOH (state of health) of the battery is overcome, and an advanced algorithm is provided for an electromobile battery management system. As shown in an abstract drawing, the algorithm includes two stages, the first stage is a test and calibration stage which is similar to MAP graph calibration of an internal combustion engine and is generally performed in a laboratory, and a probability density function (PDF) is used in the first stage; the second stage is an online estimation stage which is an implementation process of an online estimation algorithm of the SOH of the battery. In an embodiment of the invention, realtime estimation error of the algorithm is smaller than 2% in most circumstances.

The present invention relates to a lithium ion battery SOC (State Of Charge) prediction method based on a recurrent neural network, belonging to the field of electric vehicle battery management systems. The method comprises the steps of: employing a sliding window algorithm to improve battery external parameter data obtained through several experiments and a data set commonly formed by corresponding SOC values at present, employing the improved recurrent neural network, namely a long short-term memory network method to establish a power battery SOC estimation model, performing repeated verification through experiments to obtain a network layer function and a gradient regulation method, and finally, setting different learning rates to verify a prediction result of the model. The lithium ionbattery SOC (State Of Charge) prediction method can accurately predicate an SOC value at the next moment, is high in prediction precision, short in training duration and low in cost, and can be widely applied to a battery management system on the electric vehicle power battery.