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48results about How to "Avoid deep discharge" patented technology

Battery pack and balancing method of battery cells

A balancing method for a battery pack includes balancing battery cells near an end of discharge. A deep discharge of the battery cells can be prevented without using an overdischarge control unit. One battery cell balancing method includes: a balancing check condition determination step for determining whether or not a maximum voltage out of voltages of the battery cells is smaller than a reference voltage; a balancing start condition determination step for determining whether or not a residual capacity difference or voltage difference between the individual battery cells exceeds a reference value; a balancing time calculation step for calculating a balancing time for discharging the battery cell that exceeds the reference value; and a balancing operation step for discharging the selected battery cell when the battery cells are under charge or are at rest or when a discharge current of the battery cells is smaller than a reference current.
Owner:SAMSUNG SDI CO LTD

Automobile engine start control system and control method thereof

The invention discloses an automobile engine start control system and a control method thereof. The automobile engine start control system comprises an ignition key, a starting motor, a storage battery, a starting relay, an engine electric control unit, an automatic gearbox control unit and an automobile body controller, wherein the starting relay is electrically connected with the starting motorand the storage battery respectively; the engine electric control unit and the automatic gearbox control unit are respectively connected with the automobile body controller via a CAN (controller areanetwork) bus; and the starting relay and the ignition key are connected with the automobile body controller. The control method of the automobile engine start control system is characterized in that a BCM (body control module) obtains an engine speed signal and the gear position of a gearbox and carries out logical judgment according to the engine speed and the gear position of the gearbox so as to control the starting relay to be closed or opened and further control the starting motor to be started. The automobile engine start control system and the control method thereof provided by the invention have the advantages of realizing intelligent engine start control, guaranteeing the safety of vehicles and users when the engine is started, and providing protection for the starting motor and the storage battery.
Owner:CHERY AUTOMOBILE CO LTD

Battery charging control method and device and automobile

The invention provides a battery charging control method and device and an automobile. The method includes: acquiring a status parameter of a battery, and according to the status parameter, acquiring an actual relationship curve for internal resistance and number of charging-discharging times of the battery within a preset time, which is a time interval from an automobile startup moment to a preset moment; comparing the actual relationship curve and a preset relationship curve; if the actual relationship curve is not in a preset range of the preset relationship curve, updating a preset charging quantity threshold of the battery; according to the status parameter, acquiring a quantity value of the battery; comparing the quantity value of the battery to the preset charging quantity threshold; according to comparison results, determining whether or not a generator charges the battery. The battery charging control method and device has the advantages that the preset charging quantity threshold of the battery is flexibly adjusted according to the status features of the battery, deep discharging of the battery is effectively avoided, the battery is kept running in the optimal state and the service life of the battery is prolonged.
Owner:BAIC MOTOR CORP LTD

Electric quantity control device and method of hybrid energy storage system electric vehicle

InactiveCN103786589ASolve the problem of disorganized flowIntelligent forecasting of power requirementsVehicular energy storageElectric propulsionCapacitanceElectrical battery
The invention relates to the field of electric vehicles, particularly to an electric quantity control device and method of a hybrid energy storage system electric vehicle. The control device comprises connecting a diode and a contactor between a lithium battery and a super capacitor, and the breakover direction of the diode is that electricity can only flow from the battery to the super capacity. The control device also comprises a sensing device for collecting various states of the electric vehicle and a control system which can control various parts of the electric vehicle according to information transmitted by the sensing device, wherein the sensing device collects various states of an engine in real time and transmits the states to the control system, and the control system compares and judges the states with preset values to control various parts to work and accordingly achieve electric quantity control. The electric quantity control device of the hybrid energy storage system electric vehicle can reasonably distribute the electric quantity of an energy storage system and an APU (auxiliary power unit) system to enhance the integral dynamic performance, improve the comprehensive fuel saving rate and reduce the energy consumption and discharging, and meanwhile, prolong the service life of the power battery and improve the electricity efficiency and the operating reliability of the power battery.
Owner:WUHAN YINGKANG HUITONG ELECTRIC

Electric bicycle, control device and method thereof

ActiveCN101941386ADefects that reduce lifespanShort rangeSpeed controllerMotorcyclesMotor driveElectric machine
The invention discloses an electric bicycle, a control device and a method thereof. The control device comprises a cell sensor module, a PWM (Pulse Width Modulation) control module and a motor drive module, wherein the cell sensor module is used for detecting cell power; the motor drive module is used for driving a motor; and the PWM control module comprises a first voltage judging unit, an accelerate starting unit, a current-limitation judging unit, an undervoltage judging unit and a PWM set-value regulating unit. The invention has the advantages that by reducing starting current and judging the voltage value of the cell power, when judging that the cell voltage dropping variation is greater than a threshold value, the increased proportion of current is reduced immediately, and the voltage drops into a normal range and is finally retained on an undervoltage point. The invention ensures that the electric bicycle can continually run in a state with slightly lower current, an endurance mileage is effectively increased, and cell deep discharge is avoided so that the cell life is prolonged at the same time.
Owner:GUANGDONG GOBAO ELECTRONICS TECH CO LTD

Real-time control method and device for automotive electric balance

The invention relates to automotive electric balance technology, in particular to real-time control method and device for automotive electric balance. The method includes the steps of firstly, acquiring real-time electric quantity of a storage battery; secondly, judging whether the storage battery needs to be charged or not according to the real-time electric quantity of the storage battery; thirdly, if yes, acquiring real-time load of an engine; fourthly, judging whether the engine is able to drive a generator to operate or not according to the real-time load of the engine; if yes, determining that the generator needs to operate and going to next step; fifthly, allowing the generator to operate; sixthly, acquiring real-time power of the generator and real-time electric consumption of an automobile; seventhly, judging decreasing or increasing the power of the generator is needed or not according to the real-time power of the generator and the real-time electric consumption of the automobile, and executing. Start and stop of the generator and operating efficiency thereof are controlled through the controller, so that real-time electric balance of the automobile is maintained.
Owner:HANGZHOU BRANCH ZHEJIANG GEELY AUTOMOBILE RES INST +2

Deep discharge protection for battery packs with cell groups

A method of preventing deep discharge of the battery pack (1′) with series-connected cell groups (2a, 2b) by polarity reversal of an individual weakest cell (3), includes a difference measurement step which is repeated over time for detecting an event indicative of a probable reversal of polarity in which the change over time of the voltage difference between two cell groups (2a, 2b) having identical numbers of cells is checked to determine if the change in the voltage difference has exceeded an amount corresponding to a difference threshold value which reliably distinguishes a fast polarity reversal of an individual weakest cell (3) in exactly one cell group (2a, 2b) from the slow fluctuation of the voltage difference between two cell groups (2a, 2b) during an ordinary discharge characteristic curve without polarity reversal of an individual weakest cell (3); and a battery pack (1′) and a battery-powered hand-held power tool (7) with a monitoring circuit (5′) for implementing the method.
Owner:HILTI AG

Storage battery capacity predication method based on multi-factor grey correlation model

The invention discloses a storage battery capacity predication method based on a multi-factor grey correlation model. The storage battery capacity predication method based on the multi-factor grey correlation model comprises measuring the terminal voltage, the internal resistance and capacity values of a storage battery by four times in an interval mode during discharging of the storage battery; measuring the terminal voltage and the internal resistance at a fifth time; performing increasing iteration on a weighting parameter with the terminal voltage and the internal resistance serving as predication objects; obtaining predicating values of the terminal voltage sequentially through a GM (1,1) grey model; obtaining differences between the predicating values and the terminal voltage in the fifth time and selecting weighting parameter values of minimum values of absolute values of the differences; selecting the terminal voltage and the internal resistance to serve as connected factors to construct a GM (1,N) model; enabling a final weighting parameter value to be an average number of the two weighting parameter values; substituting the average weighting parameter value and measuring data of the first four times and obtaining remaining volume of the storage battery. The storage battery capacity predication method based on the multi-factor grey correlation model has the advantages of being easy to achieve, good in instantaneity and high in prediction accuracy, achieving the predication with only a small amount of data, avoiding battery damage caused by deep discharging in a traditional method and effectively improving the service life of the storage battery.
Owner:CHINA JILIANG UNIV

Method and apparatus for preventing deep discharging of auxiliary battery in association with reprogramming of ecu

A battery control method includes: receiving a reprogramming request from a diagnostic device located outside of a vehicle to reprogram software of one or more electronic control units (ECUs) of the vehicle; performing reprogramming of the one or more ECUs or recharging of an auxiliary battery according to a number of the ECUs to be reprogrammed and whether or not a state of charge (SOC) of the auxiliary battery exceeds a critical value varied depending on the number of the ECUs to be reprogrammed; and sending a signal informing of the reprogramming or a warning signal associated with the recharging to the diagnostic device.
Owner:HYUNDAI MOTOR CO LTD

Automobile power supply management controller

The invention relates to an automobile power supply management controller, which comprises a central control unit, a storage battery state detection unit, a generator voltage regulation unit, a generator current detection unit, a storage battery pack capacity selection unit, a generator power proportion selection unit, a load control execution unit and an alarm unit, wherein the central control unit is used for sending control instructions out, receiving and analyzing data sent by components connected with the central control unit, the storage battery state detection unit comprises a plurality of storage battery state detection subunits, the generator voltage regulation unit comprises a plurality of generator voltage regulation subunits, the generator current detection unit comprises a plurality of generator current detection subunits, the storage battery pack capacity selection unit and the generator power proportion selection unit are respectively used for selecting the capacity of a storage battery pack and the power proportion among a plurality of generators, the load control execution unit is connected with the central control unit and a plurality of loads, and the alarm unit is connected with the central control unit.
Owner:韩佩来

Electric vehicle battery control method and system, equipment and readable storage medium

The invention discloses an electric vehicle battery control method. The method comprises the following steps: acquiring the output voltage and the output current of a battery; calculating the currentresidual electric quantity; judging whether the current residual electric quantity is greater than a preset low-voltage threshold value or not, if so, setting the discharge cut-off residual electric quantity as a preset low electric quantity threshold, if not, calculating the output power, obtaining the load power, judging whether the output power is smaller than the load power or not, if so, setting the discharge cut-off residual electric quantity as the current residual electric quantity, and if not, controlling the battery to continue to discharge, and ending the electric vehicle battery control method; and judging whether the current battery residual capacity is less than the discharge cut-off residual capacity, if so, controlling the battery to stop discharging, and if not, controlling the battery to continue discharging. Correspondingly, the invention further discloses an electric vehicle battery control system, equipment and a readable storage medium. Deep discharge of the battery can be avoided, and the service life of the battery is prolonged.
Owner:FOSHAN POLYTECHNIC

New energy vehicle low-voltage battery power-supplying circuit and a working method thereof

The invention discloses a new energy vehicle low-voltage battery power-supplying circuit and a working method thereof, comprising the following steps: a current collecting terminal of a battery current collecting module is connected with a current collecting terminal of the low-voltage battery; a current output terminal of the battery current collecting module is connected with a current input terminal of a vehicle controller; the current collecting terminal is connected with a current input terminal of the vehicle controller; the voltage acquisition terminal of the battery voltage acquisitionmodule is connected with the voltage acquisition terminal of the low-voltage battery, and the voltage output terminal of the battery voltage acquisition module is connected with the voltage input terminal of the vehicle controller. The temperature acquisition terminal of the battery temperature acquisition module is connected with the temperature acquisition terminal of the low-voltage battery, and the temperature output terminal of the battery temperature acquisition module is connected with the temperature input terminal of the vehicle controller. The invention can avoid the deep dischargeof the low-voltage battery, cause irreversible damage to the battery, is favorable for the whole service life of the battery to be in a shallow charging and shallow discharging state, greatly prolongsthe service time of the battery, and reduces the service cost and maintenance cost of the vehicle owner.
Owner:CHINA AUTOMOTIVE ENG RES INST

Source-network cooperation type capacitive direct-current circuit breaker suitable for MMC direct-current power grid

The invention discloses a source-network cooperation type capacitive hybrid direct-current circuit breaker suitable for an MMC direct-current power grid. The MMC direct-current power grid is provided with four converter stations MMC, and each converter station is provided with two converters; the converters of the four converter stations are connected to form a square-shaped structure through double-loop direct-current overhead lines; the two ends of each direct-current line connected with the converters are respectively provided with source-network cooperation type capacitive hybrid direct-current circuit breakers used for adaptively cooperating with a source-side active voltage regulation control strategy to jointly eliminate an isolation fault when the direct-current line breaks down. According to the method, the self-adaptive cooperation of the MMC active voltage regulation control strategy and voltages of pre-charging capacitors is utilized, so that low-voltage and zero-current breaking conditions are provided for a rapid mechanical switch branch, effective removal of a fault line can be achieved, the influence of fault current on the converter stations is reduced, bus voltage collapse is avoided, and normal operation of a non-fault line is guaranteed.
Owner:TIANJIN UNIV

An electric vehicle brake energy storage device

The invention discloses a brake energy storage device of an electric vehicle. The brake energy storage device comprises a hollow shaft, a left gear disk, a rack and a right gear disk which are arranged on the hollow shaft in a sleeving manner in sequence, and an outer brake disk arranged outside the left gear disk, the rack and the right gear disk in a sleeving manner, wherein a left pull rod and a right pull rod are arranged in the hollow shaft; the left pull rod is connected with a left brake handle of the electric vehicle through a steel wire; the right pull rod is connected with a right brake handle of the electric vehicle through a steel wire; the end socket on the outer ring of the rack is fixed on the left gear disk; the end socket of the inner ring of the rack is fixed on the right gear disk; the left gear disk and the right gear disk in initial states are meshed with the hollow shaft; the left gear disk is connected with the left pull rod, and the right gear disk is connected with the right pull rod; left teeth and right teeth are arranged on the inner rings of the two ends of the outer brake disk, respectively. The brake energy storage device of the electric vehicle is simple in structure, and the cost of parts is low; batch production is facilitated, and energy storage and release are stable and reliable; furthermore, the brake energy storage device is easy to operate and feasible, and is in particular applicable to brake energy storage and starting energy release of the electric vehicle.
Owner:东台市智创精密制造产业园投资有限公司

A low-voltage battery supplemental circuit working method for new energy vehicle

A low-voltage battery supplemental circuit working method for new energy vehicle includes such step as connecting current collecting end of battery current collecting module with current collect end of low-voltage battery, connecting current output end of battery current collecting module with current input end of whole vehicle controller. The voltage acquisition terminal of the battery voltage acquisition module is connected with the voltage acquisition terminal of the low-voltage battery, and the voltage output terminal of the battery voltage acquisition module is connected with the voltageinput terminal of the vehicle controller. The temperature acquisition terminal of the battery temperature acquisition module is connected with the temperature acquisition terminal of the low-voltage battery, and the temperature output terminal of the battery temperature acquisition module is connected with the temperature input terminal of the vehicle controller. The invention can avoid the deep discharge of the low-voltage battery, cause irreversible damage to the battery, is favorable for the whole service life of the battery to be in a shallow charging and shallow discharging state, greatlyprolongs the service time of the battery, and reduces the service cost and maintenance cost of the vehicle owner.
Owner:CHINA AUTOMOTIVE ENG RES INST

Battery SOH detection method, device and system, medium and program product

The invention provides a battery SOH detection method, device and system, a medium and a program product. The method comprises the following steps: acquiring a first moment that the voltage of a target battery is equal to a first voltage threshold value and a second moment that the voltage of the target battery is equal to a second voltage threshold value from a target duration according to the voltages of the target battery at each acquisition moment within the target duration; according to the working condition of the target battery at the first moment and the working condition of the target battery at the second moment, acquiring the variation of the electric quantity of the target battery from the first moment to the second moment; and according to the variable quantity of the electric quantity and the mapping relationship between the variable quantity of the electric quantity and SOH, obtaining the healthy state SOH of the target battery, wherein the mapping relationship is obtained based on the working conditions of sample batteries which are in different SOH states and have the same type as the target battery between the first voltage threshold value and the second voltage threshold value. According to the invention, the SOH of the battery in the working process can be obtained in real time.
Owner:BEIJING HYPERSTRONG TECH

Compound power supply management system and method

The invention provides a compound power supply management system and method. The compound power supply management system comprises a starter, a storage battery, a super capacitor, an engine, an electric generator and a power management unit. If the current state of a vehicle is the start state and the state-of-charge value of the storage battery is smaller than or equal to a preset state-of-chargevalue, under the condition that the voltage value of the storage battery is smaller than or equal to a first preset voltage value, the power management unit controls the storage battery and the supercapacitor to be connected in series to form a compound power supply. The compound power supply is used for starting the starter. In the compound power supply management system and method, the power management unit controls the storage battery and the super capacitor to be connected in series to form the compound power supply; due to the fact that the storage battery and the super capacitor are connected in series, when the vehicle is started, deep discharging of the storage battery can be avoided, voltage of the storage battery cannot be substantially reduced, the service life of the storagebattery is prolonged, and it is ensured that electricity utilization devices on the vehicle can normally work; and meanwhile, compared with the scheme of starting the starter by independently utilizing the super capacity, cost is low.
Owner:GREAT WALL MOTOR CO LTD

Method and device for managing low-voltage power supply process of vehicle

The invention relates to an automotive electric energy management technology, in particular to a method and device for managing a low-voltage power supply process of a vehicle and a computer storage medium implementing the method. The method for managing the low-voltage power supply process of the vehicle comprises the following steps that if state information of a low-voltage battery is available, a first operation strategy is determined based on the state information, wherein the first operation strategy involves that when the state information indicates electricity shortage of the low-voltage battery, a vehicle-mounted DC-DC module charges the low-voltage battery and / or supplies power to a low-voltage load on the vehicle; if the state information is unavailable, a second operation strategy is determined based on the supply voltage of the low-voltage battery to a low-voltage electric energy management module, wherein the second operation strategy involves that when the supply voltageis smaller, the vehicle-mounted DC-DC module charges the low-voltage battery.
Owner:NIO ANHUI HLDG CO LTD

Software refresh control method and device and Internet of Vehicles equipment

The invention provides a software refresh control method and device and Internet of Vehicles equipment, which are applied to the technical field of automobiles. According to the invention, after a refresh instruction is obtained, the current SOC values of a target data packet and a storage battery are obtained, when target software corresponding to the target data packet is calculated and refreshed according to the target data packet, according to the electric quantity threshold of the storage battery, the size relationship between the current SOC value of the storage battery and the electricquantity threshold of the storage battery is compared, and if the current SOC value is not smaller than the electric quantity threshold of the storage battery, the target software is refreshed. According to the software refresh control method and device and the Internet of Vehicles equipment provided by the invention, the electric quantity of the storage battery is assessed before each piece of software is refreshed, and the target software is refreshed on the premise that the current SOC value of the storage battery is not smaller than the electric quantity threshold of the storage battery, so that deep discharge of the storage battery caused by software upgrading is avoided, and the normal service life of the storage battery is ensured.
Owner:SAIC MOTOR

Solar sun-shading device and vehicle front windshield sun-shading method

The invention provides a solar sun-shading device which is used for sun shading in an automobile and comprises a first sun-shading plate, a second sun-shading plate, a sliding rail and a driving rotating shaft, the first sun-shading plate and / or the second sun-shading plate are solar cell sun-shading plates, the first sun-shading plate slides along the sliding rail, the driving rotating shaft is arranged at one end of the sliding rail. The driving rotating shaft comprises a shell, a sliding driving system and an angle driving system, the sliding driving system and the angle driving system are arranged in the shell, the sliding driving system controls horizontal movement of the first sun shield and the second sun shield, and the angle driving system controls the sliding rail to rotate along the driving rotating shaft. The invention further provides a vehicle front windshield sun-shading method. The front end and the rear end can be adjusted to be opened and closed according to the needs of passengers in the automobile, the front gear is used for shading, even if the automobile is parked, electric quantity can be provided for a storage battery and electric control equipment in the automobile while the front gear is used for shading, and the automobile is economical, environmentally friendly and convenient to operate.
Owner:WUXI YINGJIE AUTOMOTIVE TECH CO LTD

Method for operating a hearing device and a hearing device optimized for being powered by a mercury-free battery

ActiveUS20160295334A1Prevents battery deep dischargePrevent deadlock situationTransducer detailsHearing device energy consumption reductionSnubber capacitorEngineering
The present invention proposes a method for operating a hearing device which prevents battery leakage, especially in the case when the hearing device 1 is powered by a mercury-free battery 2. The method comprises monitoring a supply voltage of at least one of a plurality of electronic units 7, 8, 9 of the hearing device 1, initiating a low battery leakage shutdown state when a low supply voltage condition is identified based on the monitoring, wherein the initiating a low battery leakage shutdown state includes activating at least one power gate 10 to disconnect at least one of the plurality of electronic units 7, 8, 9 from the power supply when entering the low battery leakage shutdown state, and discharging a buffer capacitor 4 provided for stabilising the battery voltage. Moreover, a hearing device 1 optimised for being powered by a mercury-free battery 2 is provided.
Owner:SONOVA AG

Switching and protection circuit for standby battery of vehicle-mounted GPS (global positioning system) terminal

The invention discloses a switching and protection circuit for a standby battery of a vehicle-mounted GPS (global positioning system) terminal. The switching and protection circuit comprises a charging chip, an electronic switch, a first voltage detection chip, a logic circuit and a second voltage detection chip, an external 5V power source is inputted in three ways, the first-way voltage is inputted to the first voltage detection chip and used for detecting input voltage, the first voltage detection chip inputs detection results to the logic circuit, the second-way voltage is directly inputted to the electronic switch, the third-way voltage is inputted to the charging chip and inputted to the electronic switch via a battery connected with the charging chip, and the electronic switch controls battery voltage output. Besides, the second voltage detection chip is connected with an output end of the electronic switch and used for detecting output battery voltage and sending detection results to the logic circuit, and the logic circuit is used for generating a judgment signal to control the electronic switch according to external power supply voltage detected by the first voltage detection chip and battery voltage inputted by the second voltage detection chip and is used for power supply switching of the external 5V power source and the battery and battery protection. By the switching and protection circuit, the standby battery can be switched on automatically when the terminal is mounted to be powered on, so that mounting and use are facilitated; and when the external power source of the terminal is cut off, outward discharge of the battery can be cut off automatically when the battery discharges to store voltage, so that deep discharge can be prevented, storage time of the terminal (battery) is prolonged, and service life of the battery can be prolonged.
Owner:深圳市伊爱高新技术开发有限公司

Power management and deep-discharge protection

The invention relates to a control apparatus (1) for a battery-operated device, such as an operating table, comprising: at least two microprocessors (2, 3) for controlling components of the battery-operated device, at least one input device (8-11), which can send instructions to at least one of the microprocessors (2, 3) by means of an input channel, wherein a first microprocessor (2) is designedin such a way that the first microprocessor can be put into an idle state, in which the input channel of the input device (8-11) is monitored, while the second microprocessor (3) is switched off, wherein the first microprocessor (2) is furthermore designed in such a way that the first microprocessor first puts itself into an active state and then puts the second microprocessor (3) into an active state when an instruction is input by the input device (8-11).
Owner:MAQUET GMBH
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