CN108544937B - Automobile storage battery charging and discharging management method and system - Google Patents
Automobile storage battery charging and discharging management method and system Download PDFInfo
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- CN108544937B CN108544937B CN201810246403.2A CN201810246403A CN108544937B CN 108544937 B CN108544937 B CN 108544937B CN 201810246403 A CN201810246403 A CN 201810246403A CN 108544937 B CN108544937 B CN 108544937B
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- 238000007726 management method Methods 0.000 title claims description 14
- 238000007599 discharging Methods 0.000 title abstract description 7
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- 238000011084 recovery Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 3
- 239000010705 motor oil Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000001429 stepping effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
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- 230000000994 depressogenic effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a method and a system for managing charging and discharging of an automobile storage battery, wherein the method comprises the steps of collecting state data of the storage battery and vehicle running condition data and sending the state data and the vehicle running condition data into a main controller; the main controller analyzes and judges the data and then outputs a control signal to the generator; the main controller judges the current running condition of the vehicle according to the running condition data of the vehicle, and the main controller dynamically adjusts the output of the generator according to the running condition of the vehicle and the state of the storage battery. The advantages of the invention include: 1. the storage battery is ensured not to be lack of power and not to be flushed, and the service life of the storage battery is prolonged; 2. during braking, the generating voltage is increased, so that part of braking energy is converted into electric energy which is stored in the storage battery, and the oil consumption of the whole vehicle is reduced; 3. when the vehicle is accelerated suddenly, the output current of the generator is limited, the negative torque of the engine under the condition of sudden acceleration is reduced, and the dynamic property of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of automobile batteries, in particular to a method and a system for managing the discharge of an automobile storage battery.
Background
With the stricter and stricter oil consumption standards, new energy automobiles are more popular, but due to the problems of cost, endurance mileage, charging and the like, the development of new energy automobiles is also greatly resisted. How to optimize the existing 12V system and achieve the effective oil saving effect becomes very important.
At present, most host plants still use common generators to enable storage batteries to be in a floating charge state for a long time. Therefore, energy loss is easily caused, and even the storage battery is seriously dehydrated, so that the service life of the storage battery is influenced. At present, storage battery sensors and intelligent generator controllers in the market become mature products gradually. Through reasonable application, an optimized management scheme is formulated, so that the service life of the storage battery can be effectively prolonged, the oil consumption is reduced, and the acceleration dynamic property of the vehicle is improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method and a system for managing the charge and discharge of an automobile storage battery, which prolong the service life of the storage battery through the management of the charge and discharge.
In order to achieve the purpose, the invention adopts the technical scheme that: a charge-discharge management method for an automobile storage battery comprises the following steps,
collecting state data of a storage battery and vehicle running condition data and sending the state data and the vehicle running condition data into a main controller;
the main controller analyzes and judges the data and then outputs a control signal to the generator;
the main controller judges the current running condition of the vehicle according to the running condition data of the vehicle, and the main controller dynamically adjusts the output of the generator according to the running condition of the vehicle and the state of the storage battery.
When the vehicle is judged to be in the normal running working condition: the main controller acquires the temperature of the storage battery through the storage battery sensor, and acquires the optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature according to the temperature of the storage battery; when the actual electric quantity value of the storage battery acquired by the storage battery sensor is higher than the optimal electric quantity value under the working condition, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value under the working condition, the main controller raises the target voltage value sent to the generator so as to increase the charging speed;
when the vehicle is judged to be in a rapid deceleration working condition: judging whether an energy recovery condition is met or not, if the energy recovery condition is met, controlling the generator to adjust the target generation voltage to the maximum allowable generation voltage by the main controller, and increasing the negative torque of the generator to realize the recovery of part of braking energy;
when the vehicle is judged to be in a rapid acceleration working condition: the main controller sends a control signal to the generator so as to reduce the exciting current of the generator, and the acceleration performance of the whole vehicle is improved by abandoning the torque of the generator.
When the vehicle runs normally, and when the difference value between the actual electric quantity value and the optimal electric quantity value of the storage battery is larger than a preset threshold value, the electric power of the whole vehicle is controlled to be completely provided by the storage battery.
The energy recovery condition comprises a precondition and a trigger condition
The preconditions are as follows: the vehicle speed is higher than a set threshold value, the engine speed is higher than a set threshold value, and the transmission chain is in a combined state;
triggering conditions are as follows: the engine is in a fuel cut-off working condition, or the brake pedal is stepped down, or the accelerator opening is smaller, or the accelerator pedal is suddenly sent.
The state data of the storage battery is acquired by a storage battery sensor, and the storage battery state data comprises voltage, temperature and current signals.
The running condition of the vehicle is judged according to the data of an accelerator pedal and a brake pedal of the vehicle.
A charge and discharge management system for an automobile storage battery comprises a storage battery sensor, a vehicle running condition acquisition unit, a main controller and a generator;
the storage battery sensor is used for acquiring state data of the automobile storage battery and sending the state data into the main controller;
the vehicle running condition acquisition unit is used for acquiring vehicle working condition data and sending the vehicle working condition data to the main controller;
the main controller judges according to the received data, sends out a generator control signal corresponding to the running condition and the state of the storage battery, and controls the generator to respond to the generation target voltage setting and the exciting current setting of the main controller.
The main controller judges the running condition of the vehicle according to the data collected by the running condition collecting unit of the vehicle, and comprises the following steps: normal running working condition, vehicle rapid deceleration working condition and vehicle rapid acceleration working condition;
under the normal running working condition, the main controller acquires the temperature data of the storage battery at the moment according to the storage battery sensor, and acquires the preset optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature; when the actual electric quantity value obtained according to the storage battery sensor is higher than the optimal electric quantity value, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value, the main controller raises the target voltage value sent to the generator to increase the charging speed;
when the vehicle is in a sudden deceleration working condition, the main controller judges whether an energy recovery condition is met, and if the energy recovery condition is met, the main controller controls the generator to adjust the target generation voltage to the allowed maximum generation voltage;
when in the vehicle rapid acceleration condition: the main controller sends a control signal to the generator to reduce the excitation current of the generator.
The vehicle running condition acquisition unit comprises a brake pedal state sensor and an accelerator pedal state sensor and is used for acquiring a brake pedal state and an accelerator pedal state respectively, and the main controller judges the working condition of the vehicle according to the accelerator pedal state and the brake pedal state.
The main controller is connected according to a data acquisition unit, and the data acquisition unit is used for acquiring vehicle speed data, engine rotating speed data, transmission chain state data and engine oil supply state data of a vehicle; and the main controller judges whether the energy recovery condition is met according to the data acquired by the data acquisition unit, the brake pedal state sensor and the accelerator pedal state sensor.
The invention detects the state of the storage battery through the storage battery sensor; the actual working condition of the vehicle is judged through an accelerator pedal and a brake pedal. The main controller judges the signals and controls the output of the generator, thereby realizing the management of the charging and discharging of the storage battery. The invention comprises three functions of storage battery charging and discharging management, braking energy recovery and emergency acceleration working condition current limiting, and has the following three advantages:
1. the storage battery is ensured not to be lack of power and not to be overcharged, and the service life of the storage battery is prolonged;
2. during braking, the generating voltage is increased, so that part of braking energy is converted into electric energy which is stored in the storage battery, and the oil consumption of the whole vehicle is reduced;
3. when the vehicle is accelerated suddenly, the output current of the generator is limited, the negative torque of the engine under the condition of sudden acceleration is reduced, and the dynamic property of the vehicle is improved.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic diagram of a battery management system according to the present invention
The reference numerals in the figures are respectively: 1. 12v lead storage batteries; 2. a battery sensor; 3. an engine; 4. an intelligent generator; 5. a main controller; 6. an accelerator pedal; 7. a brake pedal.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
The charge and discharge management method for the automobile storage battery comprises the following steps of collecting state data of the storage battery and vehicle running condition data and sending the state data and the vehicle running condition data into a main controller; the main controller analyzes and judges the data and then outputs a control signal to the generator; the main controller judges the current running condition of the vehicle according to the running condition data of the vehicle, and the main controller dynamically adjusts the output of the generator according to the running condition of the vehicle and the state of the storage battery. The output of the generator is adjusted according to different control signals output by different storage battery states and different vehicle driving disclosures.
When the vehicle is judged to be in the normal running working condition: the main controller acquires the temperature of the storage battery through the storage battery sensor, and acquires the optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature according to the temperature of the storage battery; when the actual electric quantity value of the storage battery acquired by the storage battery sensor is higher than the optimal electric quantity value under the working condition, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value under the working condition, the main controller raises the target voltage value sent to the generator so as to increase the charging speed; when the vehicle runs normally, and when the difference value between the actual electric quantity value and the optimal electric quantity value of the storage battery is larger than a preset threshold value, the electric power of the whole vehicle is controlled to be completely provided by the storage battery. The optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature of the storage battery are preset in the main controller, and corresponding data are obtained through test calibration.
When the vehicle is judged to be in a rapid deceleration working condition: judging whether the energy recovery condition is met, if the energy recovery condition is met, controlling the generator to adjust the target generating voltage to the allowed maximum generating voltage by the main controller;
when the vehicle is judged to be in a rapid acceleration working condition: the main controller sends a control signal to the generator to reduce the excitation current of the generator.
The running condition of the vehicle is judged according to the data of an accelerator pedal and a brake pedal of the vehicle. The travel of the pedal, the change rate of the pedal travel and other data are obtained through the brake pedal sensor and the accelerator pedal sensor, and whether the vehicle is in a rapid deceleration state, a rapid acceleration state or a normal driving state except the two states is further judged.
In a preferred embodiment, the automobile storage battery charging and discharging management system comprises a storage battery sensor, a vehicle running condition acquisition unit, a main controller and a generator; the storage battery sensor is used for acquiring state data of the automobile storage battery and sending the state data into the main controller; the vehicle running condition acquisition unit is used for acquiring vehicle working condition data and sending the vehicle working condition data to the main controller; the main controller judges according to the received data, sends out a generator control signal corresponding to the running condition and the state of the storage battery, and controls the generator to respond to the generation target voltage setting and the excitation current setting of the main controller.
The main controller judges the running condition of the vehicle according to the data collected by the running condition collecting unit of the vehicle, and comprises the following steps: normal running working condition, vehicle rapid deceleration working condition and vehicle rapid acceleration working condition;
under the normal running working condition, the main controller acquires the temperature data of the storage battery at the moment according to the storage battery sensor, and acquires the preset optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature; when the actual electric quantity value obtained according to the storage battery sensor is higher than the optimal electric quantity value, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value, the main controller raises the target voltage value sent to the generator to increase the charging speed;
when the vehicle is in a sudden deceleration working condition, the main controller judges whether an energy recovery condition is met, and if the energy recovery condition is met, the main controller controls the generator to adjust the target generation voltage to the allowed maximum generation voltage;
when in the vehicle rapid acceleration condition: the main controller sends a control signal to the generator to reduce the excitation current of the generator.
The vehicle running condition acquisition unit comprises a brake pedal state sensor and an accelerator pedal state sensor and is used for acquiring a brake pedal state and an accelerator pedal state respectively, and the main controller judges the working condition of the vehicle according to the accelerator pedal state and the brake pedal state. The main controller is connected with the data acquisition unit, and the data acquisition unit is used for acquiring vehicle speed data, engine rotating speed data, transmission chain state data and engine oil supply state data of the vehicle; the main controller judges whether the energy recovery condition is met according to the data collected by the data collecting unit, the brake pedal state sensor and the accelerator pedal state sensor.
In the embodiment, in terms of hardware, the system is added with a storage battery sensor compared with a traditional vehicle type power supply system, and in addition, a common generator is replaced by a controllable intelligent generator. The battery sensors may monitor the voltage, current, temperature signals of the battery and provide a battery SOC signal to the master controller via the LI N bus. The intelligent generator is communicated with the main controller through the LI N bus, responds to control instructions of generation target voltage setting, exciting current limitation and the like of the main controller, and feeds back the working state of the generator and a fault diagnosis result in real time.
Under the normal driving condition, the main controller sets the optimal electric quantity value (namely the optimal SOC) and the optimal generating voltage of one storage battery according to the current storage battery temperature signal.
When the actual SOC calculated by the storage battery sensor is higher than the optimal SOC, the main controller properly adjusts the target voltage value sent to the generator down, and reduces the charging speed of the storage battery. When the difference value between the actual SOC and the optimal SOC is larger than a certain threshold value, the target generating voltage is lower than the voltage of the storage battery, and at the moment, the electric energy of the whole vehicle is completely provided by the storage battery. This strategy can achieve two effects 1, prevent the battery from being overcharged 2, and leave a certain margin for the battery to recover braking energy.
When the actual SOC calculated by the storage battery sensor is lower than the optimal SOC, the main controller appropriately increases the target voltage value sent to the generator (the target voltage value cannot exceed a preset maximum value), and the storage battery is rapidly recharged. This strategy can achieve two effects 1, prevent the accumulator from short-circuiting 2, and for the vehicle with the start-stop configuration, the vehicle can rapidly reach the allowable electric quantity meeting the start-stop.
Under the condition of vehicle rapid deceleration, the main controller adjusts the target generating voltage to the maximum allowable generating voltage, so that more electric energy is stored in the storage battery in the braking process, and the recovery of part of braking energy is realized. The realization of the braking energy recovery is divided into a precondition and a triggering condition. The precondition for recovering braking energy is as follows:
The triggering conditions for the recovery of braking energy are as follows:
The condition of rapid acceleration of the vehicle refers to that a driver has a large accelerator or a rapid accelerator stepping under the condition that a transmission chain is combined. In such a case, the driver needs to have as much driving torque as possible. In order to more directly reduce the torque of the generator, the main controller directly sends a signal to reduce the excitation current of the generator. Thereby limiting the output capacity of the generator and reducing the power generation torque to allow more engine torque to be used to drive the vehicle. The judgment conditions of the vehicle rapid acceleration working condition are as follows:
Through verification, the storage battery charging and discharging management method can reduce the oil consumption of the whole vehicle by about 1%.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (2)
1. A charge and discharge management method for an automobile storage battery is characterized by comprising the following steps:
collecting state data of a storage battery and vehicle running condition data and sending the state data and the vehicle running condition data into a main controller;
the main controller analyzes and judges the data and then outputs a control signal to the generator;
the main controller judges the current running condition of the vehicle according to the running condition data of the vehicle, and dynamically adjusts the output of the generator according to the running condition of the vehicle and the state of the storage battery;
when the vehicle is judged to be in the normal running working condition: the main controller acquires the temperature of the storage battery through the storage battery sensor, and acquires the optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature according to the temperature of the storage battery; when the actual electric quantity value of the storage battery acquired by the storage battery sensor is higher than the optimal electric quantity value under the working condition, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value under the working condition, the main controller raises the target voltage value sent to the generator so as to increase the charging speed; when the vehicle runs normally, when the difference value between the actual electric quantity value and the optimal electric quantity value of the storage battery is larger than a preset threshold value, the whole vehicle power consumption is controlled to be completely provided by the storage battery;
when the vehicle is judged to be in a rapid deceleration working condition: judging whether the energy recovery condition is met, if the energy recovery condition is met, controlling the generator to adjust the target generating voltage to the allowed maximum generating voltage by the main controller;
when the vehicle is judged to be in a rapid acceleration working condition: the main controller sends a control signal to the generator to reduce the exciting current of the generator;
the running condition of the vehicle is judged according to the data of an accelerator pedal and a brake pedal of the vehicle;
the method comprises the following steps that state data of a storage battery are acquired by a storage battery sensor, wherein the state data of the storage battery comprise voltage, temperature and current signals;
the energy recovery conditions include preconditions and triggering conditions,
the preconditions are as follows: the vehicle speed is higher than a set threshold value, the engine speed is higher than a set threshold value, and the transmission chain is in a combined state;
triggering conditions are as follows: the engine is in a fuel cut-off working condition, or the brake pedal is stepped down, or the accelerator opening is smaller, or the accelerator pedal is suddenly sent.
2. The utility model provides an automobile storage battery charge-discharge management system which characterized in that: the system comprises a storage battery sensor, a vehicle running condition acquisition unit, a main controller and a generator;
the storage battery sensor is used for acquiring state data of the automobile storage battery and sending the state data into the main controller;
the vehicle running condition acquisition unit is used for acquiring vehicle working condition data and sending the vehicle working condition data to the main controller;
the main controller judges according to the received data, sends out a generator control signal corresponding to the running condition and the state of the storage battery, and controls the generator to respond to the generation target voltage setting and the excitation current setting of the main controller;
the main controller judges the running condition of the vehicle according to the data collected by the running condition collecting unit of the vehicle, and comprises the following steps: normal running working condition, vehicle rapid deceleration working condition and vehicle rapid acceleration working condition;
under the normal running working condition, the main controller acquires the temperature data of the storage battery at the moment according to the storage battery sensor, and acquires the preset optimal electric quantity value and the optimal generating voltage of the storage battery corresponding to the temperature; when the actual electric quantity value obtained according to the storage battery sensor is higher than the optimal electric quantity value, the main controller controls the target voltage value of the generator to be adjusted downwards so as to reduce the charging speed; when the actual electric quantity value of the storage battery is lower than the optimal electric quantity value, the main controller raises the target voltage value sent to the generator to increase the charging speed;
when the vehicle is in a sudden deceleration working condition, the main controller judges whether an energy recovery condition is met, and if the energy recovery condition is met, the main controller controls the generator to adjust the target generation voltage to the allowed maximum generation voltage;
when in the vehicle rapid acceleration condition: the main controller sends a control signal to the generator to reduce the exciting current of the generator;
the vehicle running condition acquisition unit comprises a brake pedal state sensor and an accelerator pedal state sensor and is used for acquiring a brake pedal state and an accelerator pedal state respectively, and the main controller judges the working condition of the vehicle according to the accelerator pedal state and the brake pedal state;
the main controller is connected with a data acquisition unit, and the data acquisition unit is used for acquiring vehicle speed data, engine rotating speed data, transmission chain state data and engine oil supply state data of a vehicle; and the main controller judges whether the energy recovery condition is met according to the data acquired by the data acquisition unit, the brake pedal state sensor and the accelerator pedal state sensor.
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| CN201810246403.2A CN108544937B (en) | 2018-03-23 | 2018-03-23 | Automobile storage battery charging and discharging management method and system |
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| CN201810246403.2A CN108544937B (en) | 2018-03-23 | 2018-03-23 | Automobile storage battery charging and discharging management method and system |
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| CN111817417B (en) * | 2019-04-12 | 2023-04-18 | 长城汽车股份有限公司 | Charging method and device of lead-acid storage battery for 12V start and stop and vehicle |
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| CN112260598B (en) * | 2020-09-29 | 2022-05-03 | 东风商用车有限公司 | Dynamic power generation control method and device for generator |
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