CN111817417B - Charging method and device of lead-acid storage battery for 12V start and stop and vehicle - Google Patents
Charging method and device of lead-acid storage battery for 12V start and stop and vehicle Download PDFInfo
- Publication number
- CN111817417B CN111817417B CN201910293287.4A CN201910293287A CN111817417B CN 111817417 B CN111817417 B CN 111817417B CN 201910293287 A CN201910293287 A CN 201910293287A CN 111817417 B CN111817417 B CN 111817417B
- Authority
- CN
- China
- Prior art keywords
- storage battery
- vehicle
- generator
- output voltage
- electric quantity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1446—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in response to parameters of a vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Abstract
The invention provides a charging method, a charging device and a vehicle of a 12V start-stop lead-acid storage battery, wherein the method comprises the following steps: after the vehicle is powered on, judging whether the output voltage of the generator meets the dynamic regulation condition; if so, judging whether the vehicle is braked; if the vehicle is braked, the generator is controlled to recover energy, and the storage battery is charged by the recovered energy, so that the storage battery is in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharge of the storage battery is avoided.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a charging method and device of a 12V start-stop lead-acid storage battery and a vehicle.
Background
With the advocation of green environmental protection and low-carbon life, energy conservation and emission reduction in the automobile industry also become a new trend. The automobile starting and stopping system, the braking energy recovery system and the like can reduce the discharge amount and save the fuel by turning off the engine in idling and storing the braking energy into the storage battery in braking. The storage battery plays a very critical role as a part in the storage battery. In order to realize frequent starting, the storage battery needs to be ensured to have high enough working reliability and long service life, and in order to realize recovery of braking energy, the storage battery needs to be ensured to have enough space for storing energy, so that a strategy for charging the storage battery on the whole vehicle is very important.
In the prior art, constant-voltage charging is mostly adopted for a charging strategy of a storage battery on a vehicle, the charging voltage cannot be dynamically adjusted according to the electric quantity state of the storage battery, and meanwhile, the difference of different types of storage batteries, such as an EFB storage battery and an AGM storage battery, is not considered, and the optimal electric quantity and capacity of the storage battery are not considered, so that the vulcanization degree of the storage battery is higher, the service life of the storage battery is shortened, and the storage battery is possibly overcharged to cause that energy recovery cannot be carried out during braking, and energy waste is caused.
Disclosure of Invention
In view of this, the invention aims to provide a charging method of a 12V start-stop lead-acid storage battery, which can ensure that the storage battery is in a good state, reduce the vulcanization degree of the storage battery and prolong the service life of the storage battery; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a charging method of a 12V start-stop lead-acid storage battery comprises the following steps: after the vehicle is powered on, judging whether the output voltage of the generator meets the dynamic regulation condition; if so, judging whether the vehicle is braked; and if the vehicle brakes, controlling the generator to recover energy, and charging the storage battery through the recovered energy.
Further, the method also comprises the following steps: judging whether the vehicle meets an idling stop condition or not; if yes, controlling the vehicle to idle and stop, and judging whether the vehicle meets a starting condition; and if the starting condition is met, controlling the vehicle to start, and judging whether the output voltage of the generator meets the dynamic regulation condition.
Further, still include: when the vehicle is not braked or the vehicle does not meet the idle stop condition, determining the target output voltage of the generator, and controlling the generator to charge the storage battery according to the target output voltage.
Further, the determining a target output voltage of the generator includes: acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery; and determining the target output voltage of the generator by inquiring a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery.
Further, still include: determining the capacity and type of the storage battery; and determining the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery.
Further, the method also comprises the following steps: and if the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using a preset constant output voltage.
Compared with the prior art, the charging method of the 12V start-stop lead-acid storage battery has the following advantages:
according to the charging method of the 12V start-stop lead-acid storage battery, after a vehicle is powered on, whether the output voltage of a generator meets a dynamic regulation condition is judged; if so, judging whether the vehicle is braked; if the vehicle is braked, the generator is controlled to recover energy, and the storage battery is charged by the recovered energy, so that the storage battery is in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
The invention also aims to provide a charging device of the 12V start-stop lead-acid storage battery, which can ensure that the storage battery is in a good state, reduce the vulcanization degree of the storage battery and prolong the service life of the storage battery; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a 12V opens and stops charging device with lead acid battery, includes: the acquisition module is used for acquiring the static current of the vehicle and the residual electric quantity of the battery after the vehicle is locked; the judging module is used for judging whether the output voltage of the generator meets the dynamic regulation condition or not after the vehicle is powered on, and judging whether the vehicle brakes or not when the output voltage of the generator meets the dynamic regulation condition; and the control module is used for controlling the generator to recover energy when the vehicle brakes and charging the storage battery through the recovered energy.
Further, the determining module is further configured to: judging whether the vehicle meets an idle stop condition, judging whether the vehicle meets a starting condition when the vehicle is stopped in an idle state, and judging whether the output voltage of the generator meets a dynamic regulation condition after the vehicle is started; the control module is further configured to: controlling the vehicle to idle stop when the vehicle satisfies an idle stop condition, and controlling the vehicle to start when the vehicle satisfies a start condition.
Further, the control module is further configured to: when the vehicle is not braked or the vehicle does not meet the idle stop condition, determining the target output voltage of the generator, and controlling the generator to charge the storage battery according to the target output voltage.
Further, the control module determines a target output voltage of the generator, including: acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery; and determining the target output voltage of the generator by inquiring a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery.
Further, the control module is further configured to: determining the capacity and type of the storage battery; and determining the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery.
Further, the control module is further configured to: and when the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using a preset constant output voltage.
Compared with the prior art, the charging device of the 12V start-stop lead-acid storage battery has the same advantages as the charging method of the 12V start-stop lead-acid storage battery, and the details are not repeated.
Another object of the present invention is to provide a vehicle, which can ensure that the storage battery is in a good state, reduce the vulcanization degree of the storage battery, and prolong the service life of the storage battery; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle is provided with a charging device for a 12V start-stop lead-acid battery as described in the above embodiments.
Compared with the prior art, the vehicle and the charging device of the lead-acid storage battery for starting and stopping 12V have the same advantages, and the detailed description is omitted.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a charging method of a 12V start-stop lead-acid battery according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall process for charging a 12V start-stop lead-acid battery according to an embodiment of the invention;
FIG. 3 is a schematic diagram of an EFB battery temperature-charge-voltage three-dimensional mapping curve model according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a three-dimensional AGM battery temperature-charge-voltage mapping curve model according to an embodiment of the present invention;
fig. 5 is a block diagram of a charging apparatus for a 12V start-stop lead-acid battery according to an embodiment of the present invention.
Description of reference numerals:
the charging device 100 of the 12V start-stop lead-acid storage battery, the judgment module 110 and the control module 120.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a flow chart of a method of charging a 12V start-stop lead-acid battery according to an embodiment of the invention.
As shown in fig. 1, a charging method of a 12V start-stop lead-acid battery according to an embodiment of the invention includes the following steps:
step S1: and after the vehicle is powered on, judging whether the output voltage of the generator meets the dynamic regulation condition. Specifically, after the vehicle is started and powered on, whether the output voltage of the generator meets the dynamic regulation condition or not is judged, that is, whether the vehicle needs to perform intelligent voltage regulation or not is judged. This is because, under certain conditions, the output voltage of the generator is not dynamically adjustable, but is a constant output. Such as: when the high beam/low beam is turned on, the output voltage of the generator is constant; when a Local Interconnect Network (LIN) bus communication fault of a BS (Battery Sensor), a BS-related fault, a State of Charge (SOC) of a Battery or a lowest voltage SOFV expected to be started next time is not learned, an Electronic Control Unit (ECU) controls a target output voltage of a generator to be constant; when the LIN bus of the generator fails in communication or is short-circuited and cannot communicate, the intelligent generator defaults to have constant output voltage, the output voltage of the generator is not controlled by an ECU (engine ECU or other ECUs), and whether the output voltage of the generator can be dynamically adjusted or not can be judged according to the conditions.
Step S2: if yes, judging whether the vehicle brakes. Namely, when the output voltage of the generator meets the dynamic regulation condition, whether the vehicle is braked is further judged.
And step S3: and if the vehicle brakes, controlling the generator to recover energy, and charging the storage battery (namely the 12V start-stop lead-acid storage battery) by the recovered energy. Specifically, when the vehicle brakes, the generator is controlled to output constant voltage for energy recovery, so that the energy generated during braking is recovered into the storage battery to charge the storage battery, the storage battery is ensured to be in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
Further, in one embodiment of the present invention, the method further comprises: and if the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using the preset constant output voltage. That is, for example, when the high beam/low beam is turned on, or when the LIN communication failure of the BS, the BS-related failure, the SOC, or the SOFV is not learned, or when the LIN communication failure or the short circuit of the generator cannot be communicated, the generator is controlled to charge the battery with a preset constant output voltage, and at this time, the output voltage of the generator is not controlled by the ECU, that is, cannot be dynamically adjusted.
Further, in one embodiment of the present invention, the method further comprises: judging whether the vehicle meets an idling stop condition or not; if so, controlling the vehicle to stop at an idle speed, and judging whether the vehicle meets a starting condition; and if the starting condition is met, controlling the vehicle to start, and judging whether the output voltage of the generator meets the dynamic regulation condition. Specifically, the battery state, such as voltage, current, battery temperature and SOC, can be detected by the battery sensor BS, and the conditions such as vehicle load, operating condition and lowest voltage SOFV predicted for the next start are combined to determine whether the vehicle needs to be stopped at idle speed, after the vehicle is allowed to stop, the vehicle is controlled to stop at idle speed, and further, the vehicle needs to be started according to the conditions, when the vehicle needs to be started, the vehicle is controlled to start and power on, and whether the output voltage of the generator meets the dynamic regulation condition is determined, i.e., the step S1 is executed again.
Further, when the vehicle is not braked or the vehicle does not meet the idle stop condition, the target output voltage of the generator is determined, and the generator is controlled to charge the storage battery according to the target output voltage. Specifically, when the vehicle normally runs, the target output voltage of the engine is determined, and the storage battery is charged according to the target output voltage of the generator, so that the electric quantity of the storage battery is better managed, the storage battery is ensured to be in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged.
Wherein determining a target output voltage of the generator comprises: acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery; and determining the target output voltage of the generator by inquiring the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery. In other words, when the vehicle is running normally, the output voltage of the generator is dynamically adjusted according to the optimal electric quantity of the storage battery, the current temperature of the storage battery and the current actual SOC, the target output voltage of the generator is finally determined, and the storage battery is charged through the target output voltage of the generator.
Further, in one embodiment of the present invention, the method further comprises: determining the capacity and the type of the storage battery; and determining a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery. That is, different capacities and types of the storage battery correspond to different temperature-electric quantity-voltage three-dimensional mapping curve models, so that the capacity and the type of the storage battery need to be determined, and then the corresponding temperature-electric quantity-voltage three-dimensional mapping curve model needs to be determined, so that the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model is more accurate, and the accuracy of the target output voltage of the generator is further improved. After the vehicle is powered on, the battery ID (the battery ID includes information of the battery capacity, the battery type, and the like) is identified through the LIN bus, the battery capacity and the battery type, such as the EFB battery or the AGM battery, are determined, and then a three-dimensional mapping curve model of the temperature-electric quantity-voltage of the EFB battery (as shown in fig. 3) or a three-dimensional mapping curve model of the temperature-electric quantity-voltage of the AGM battery (as shown in fig. 4) corresponding to the EFB battery or the AGM battery is determined according to the EFB battery or the AGM battery.
Specifically, the optimal electric quantity of the storage battery is used as a reference parameter for the intelligent charging ECU to manage the electric quantity of the storage battery, and the target voltage for charging the storage battery is set to ensure that the electric quantity of the storage battery can be kept above the optimal electric quantity. The charging voltage of the storage battery is obtained through the current temperature of the storage battery and the current actual SOC of the storage battery. For example, referring to fig. 4, for an AGM battery, when the current temperature of the battery is 25 ℃ and the current actual SOC is 85%, the target output voltage of the generator at this time is 14V.
When the SOC of the battery is high, the high voltage charging tends to cause the battery to lose water, requiring a reduction in the charging voltage, while a lower SOC may allow a higher charging voltage to be used. Similarly, when the temperature of the battery is high, the high voltage charging easily causes the water loss of the battery, so that the charging voltage needs to be reduced, and when the temperature is low, a higher charging voltage can be adopted.
In order to facilitate better understanding of the present invention, the charging method of the 12V start-stop lead-acid battery is described in a specific embodiment with reference to fig. 2.
In this embodiment, the charging method for a 12V start-stop lead-acid battery mainly involves a 12V low-voltage battery, a generator, a battery sensor BS, an intelligent charging ECU (such as an engine ECU or DCDC), and the like, where the BS detects a state of the battery, and includes: the intelligent charging ECU mainly functions to receive signals of the BS, perform logic judgment, control target output voltage of the generator and the like.
In this embodiment, the flow of the method is summarized as follows:
1. after the vehicle is powered on, the intelligent charging ECU identifies the storage battery ID (the storage battery ID comprises information such as the storage battery capacity and the storage battery type) through the LIN bus, and judges the storage battery capacity and the storage battery type, such as an EFB storage battery or an AGM storage battery.
2. After the battery capacity and type are determined, the battery is charged according to an operating program corresponding to the battery capacity and type. For example, as shown in fig. 2, a parametric operation program corresponding to the EFB battery and a parametric operation program corresponding to the AGM battery are included.
3. The intelligent charging ECU judges whether the output voltage of the generator needs to be intelligently controlled, namely the output voltage of the generator is dynamically adjusted.
Wherein, under some specific conditions, the output voltage of the generator cannot be dynamically adjusted, but is a constant output. Such as: when the high beam/low beam is turned on, the output voltage of the generator is constant; when LIN communication faults, BS related faults, SOC or SOFV of the BS are not learned, the ECU controls the target output voltage of the generator to be constant; when the LIN communication of the generator fails or the short circuit cannot communicate, the default output voltage of the intelligent generator is constant, and the output voltage of the generator is not controlled by the ECU. Under the general condition, when a vehicle runs normally, the intelligent charging ECU controls the target output voltage of the generator according to the optimal electric quantity of the storage battery, the current temperature of the storage battery and the current actual electric quantity.
4. The intelligent charging ECU receives braking signals sent by other ECUs. When the vehicle brakes, the intelligent charging ECU controls the generator to output constant voltage for energy recovery, so that energy generated during braking is recovered into the storage battery to charge the storage battery.
5. The intelligent charging ECU judges whether the vehicle needs to be stopped in an idling mode or not. The intelligent charging ECU judges whether idle stop is needed or not according to the conditions of the load, the working condition, the state of the storage battery, the SOFV and the like of the whole vehicle, and judges whether start is needed or not according to the conditions after the stop is allowed.
6. When the vehicle normally runs, the intelligent charging ECU controls the generator to charge the storage battery with the target output voltage according to the optimal electric quantity of the storage battery, the current temperature of the storage battery and the current actual SOC, so that the electric quantity of the storage battery is better managed.
In this embodiment, the charging method of the 12V start-stop lead-acid storage battery is mainly applied to a vehicle type using the 12V lead-acid storage battery, and has a start-stop function and a braking energy recovery function at the same time. After an engine of a vehicle is started, an intelligent charging ECU (engine ECU or other ECUs) is adopted to control a generator to charge a storage battery, so that the lead-acid storage battery is ensured to be in a good state, and the problems of storage battery vulcanization and service life reduction caused by power shortage of the storage battery are solved; the problems that energy recovery cannot be carried out during braking and oil saving and emission reduction cannot be realized due to overcharging are solved.
In summary, according to the charging method of the 12V start-stop lead-acid storage battery of the embodiment of the invention, after the vehicle is powered on, whether the output voltage of the generator meets the dynamic regulation condition is judged; if so, judging whether the vehicle is braked; if the vehicle is braked, the generator is controlled to recover energy, and the storage battery is charged by the recovered energy, so that the storage battery is in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharge of the storage battery is avoided.
The invention further provides a charging device of the lead-acid storage battery for starting and stopping 12V.
Fig. 5 is a block diagram of a charging apparatus for a 12V start-stop lead-acid battery according to an embodiment of the present invention.
As shown in fig. 5, the charging apparatus 100 for a 12V start-stop lead-acid battery according to an embodiment of the present invention includes: a decision block 110 and a control block 120.
The determining module 110 is configured to determine whether the output voltage of the generator meets the dynamic adjustment condition after the vehicle is powered on, and determine whether the vehicle brakes when the output voltage of the generator meets the dynamic adjustment condition. Specifically, after the vehicle is started and powered on, whether the output voltage of the generator meets the dynamic regulation condition or not is judged, that is, whether the vehicle needs to perform intelligent voltage regulation or not is judged. This is because, under certain conditions, the output voltage of the generator is not dynamically adjustable, but is a constant output. Such as: when the high beam/low beam is turned on, the output voltage of the generator is constant; when a Local Interconnect Network (LIN) bus communication fault of a BS (Battery Sensor), a BS-related fault, a State of Charge (SOC) of a Battery or a lowest voltage SOFV expected to be started next time is not learned, an Electronic Control Unit (ECU) controls a target output voltage of a generator to be constant; when the LIN bus of the generator fails in communication or is short-circuited and cannot communicate, the intelligent generator defaults to have constant output voltage, the output voltage of the generator is not controlled by an ECU (engine ECU or other ECUs), and whether the output voltage of the generator can be dynamically adjusted or not can be judged according to the conditions. And when the output voltage of the generator meets the dynamic regulation condition, further judging whether the vehicle is braked.
The control module 120 is configured to control the generator to recover energy when the vehicle brakes, and charge a battery (i.e., a 12V start-stop lead-acid battery) with the recovered energy.
The determining module 110 is further configured to: judging whether the vehicle meets an idling stop condition, judging whether the vehicle meets a starting condition when the vehicle is stopped at an idling speed, and judging whether the output voltage of the generator meets a dynamic regulation condition after the vehicle is started. Specifically, when the vehicle brakes, the generator is controlled to output constant voltage for energy recovery, so that the energy generated during braking is recovered into the storage battery to charge the storage battery, the storage battery is ensured to be in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
Further, in an embodiment of the present invention, the control module 120 is further configured to: and when the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using the preset constant output voltage. That is, for example, when the high beam/low beam is turned on, or when the LIN communication failure of the BS, the BS-related failure, the SOC, or the SOFV is not learned, or when the LIN communication failure or the short circuit of the generator cannot be communicated, the generator is controlled to charge the battery with a preset constant output voltage, and at this time, the output voltage of the generator is not controlled by the ECU, that is, cannot be dynamically adjusted.
Further, in an embodiment of the present invention, the control module 120 is further configured to: controlling the vehicle to idle stop when the vehicle satisfies the idle stop condition, and controlling the vehicle to start when the vehicle satisfies the start condition. Specifically, the storage battery state such as voltage, current, storage battery temperature and SOC can be detected through a storage battery sensor BS, whether the vehicle needs to be stopped at an idle speed or not is judged according to the conditions such as the load and the working condition of the whole vehicle, the lowest voltage SOFV during the next starting is predicted, the vehicle is controlled to stop at the idle speed after the stop is allowed, whether the vehicle needs to be started or not is further judged according to the conditions, when the vehicle needs to be started, the vehicle is controlled to be started and electrified, and whether the output voltage of a generator meets the dynamic regulation condition or not is judged.
The control module 120 is further configured to: when the vehicle is not braked or the vehicle does not meet the idle stop condition, the target output voltage of the generator is determined, and the generator is controlled to charge the storage battery according to the target output voltage. Specifically, when the vehicle normally runs, the target output voltage of the engine is determined, and the storage battery is charged according to the target output voltage of the generator, so that the electric quantity of the storage battery is better managed, the storage battery is ensured to be in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged.
Wherein the control module 120 determines the target output voltage of the generator, including: acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery; and determining the target output voltage of the generator by inquiring the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery. In other words, when the vehicle normally runs, the output voltage of the generator is dynamically adjusted according to the optimal electric quantity of the storage battery, the current temperature of the storage battery and the current actual SOC, the target output voltage of the generator is finally determined, and the storage battery is charged through the target output voltage of the generator.
Further, in an embodiment of the present invention, the control module 120 is further configured to: determining the capacity and the type of the storage battery; and determining a storage battery temperature-electricity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery. That is, different capacities and types of the storage battery correspond to different temperature-electric quantity-voltage three-dimensional mapping curve models, so that the capacity and the type of the storage battery need to be determined, and then the corresponding temperature-electric quantity-voltage three-dimensional mapping curve model needs to be determined, so that the storage battery temperature-electric quantity-voltage three-dimensional mapping curve model is more accurate, and the accuracy of the target output voltage of the generator is further improved. After the vehicle is powered on, the battery ID (the battery ID comprises information of battery capacity, battery type and the like) is identified through the LIN bus, the battery capacity and the battery type, such as an EFB battery or an AGM battery, are judged, and then an EFB battery temperature-electric quantity-voltage three-dimensional mapping curve model or an AGM battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the EFB battery or the AGM battery is determined according to the EFB battery or the AGM battery.
Specifically, the optimal electric quantity of the storage battery is used as a reference parameter for the intelligent charging ECU to manage the electric quantity of the storage battery, and the target voltage for charging the storage battery is set to ensure that the electric quantity of the storage battery can be kept above the optimal electric quantity. The charging voltage of the storage battery is obtained through the current temperature of the storage battery and the current actual SOC of the storage battery. For example, for an AGM battery, when the current temperature of the battery is 25 ℃ and the current actual SOC is 85%, the target output voltage of the generator at that time is 14V.
When the SOC of the battery is high, the high voltage charging tends to cause the battery to lose water, requiring a reduction in the charging voltage, while a lower SOC may allow a higher charging voltage to be used. Similarly, when the temperature of the battery is high, the high voltage charging easily causes the water loss of the battery, so that the charging voltage needs to be reduced, and when the temperature is low, a higher charging voltage can be adopted.
It should be noted that a specific implementation manner of the charging apparatus for a 12V start-stop lead-acid battery according to the embodiment of the present invention is similar to a specific implementation manner of the charging method for a 12V start-stop lead-acid battery according to the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not described here in order to reduce redundancy.
According to the charging device of the 12V start-stop lead-acid storage battery, after a vehicle is powered on, whether the output voltage of a generator meets a dynamic regulation condition is judged; if so, judging whether the vehicle is braked; if the vehicle is braked, the generator is controlled to recover energy, and the storage battery is charged by the recovered energy, so that the storage battery is in a good state, the vulcanization degree of the storage battery is reduced, and the service life of the storage battery is prolonged; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
Further, an embodiment of the invention discloses a vehicle provided with the charging device of the 12V start-stop lead-acid storage battery as described in any one of the above embodiments. The vehicle can ensure that the storage battery is in a good state, reduce the vulcanization degree of the storage battery and prolong the service life of the storage battery; meanwhile, energy waste caused by the fact that energy recovery cannot be carried out during braking due to overcharging of the storage battery is avoided.
In addition, other configurations and functions of the vehicle according to the embodiment of the present invention are known to those skilled in the art, and are not described herein in detail in order to reduce redundancy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A charging method of a 12V start-stop lead-acid storage battery is characterized by comprising the following steps:
after the vehicle is powered on, judging whether the output voltage of the generator meets the dynamic regulation condition;
if so, judging whether the vehicle is braked;
if the vehicle brakes, controlling a generator to recover energy, and charging the storage battery through the recovered energy;
when the vehicle is not braked or the vehicle does not meet an idle stop condition, determining a target output voltage of the generator, and controlling the generator to charge the storage battery according to the target output voltage;
determining a target output voltage of the generator, comprising: determining the capacity and type of the storage battery;
determining a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery;
acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery;
and determining the target output voltage of the generator by inquiring a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery.
2. The charging method of the 12V start-stop lead-acid storage battery according to claim 1, characterized by further comprising the following steps:
judging whether the vehicle meets an idling stop condition or not;
if yes, controlling the vehicle to idle and stop, and judging whether the vehicle meets a starting condition;
and if the starting condition is met, controlling the vehicle to start, and judging whether the output voltage of the generator meets the dynamic regulation condition.
3. The charging method of the 12V start-stop lead-acid storage battery according to claim 1, characterized by further comprising the following steps:
and if the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using a preset constant output voltage.
4. The utility model provides a 12V opens and stops charging device with lead acid battery which characterized in that includes:
the judging module is used for judging whether the output voltage of the generator meets the dynamic regulation condition or not after the vehicle is powered on, and judging whether the vehicle brakes or not when the output voltage of the generator meets the dynamic regulation condition;
the control module is used for controlling the generator to recover energy when the vehicle brakes and charging the storage battery through the recovered energy;
when the vehicle is not braked or the vehicle does not meet the idle stop condition, determining the target output voltage of the generator, and controlling the generator to charge the storage battery according to the target output voltage;
determining a target output voltage of the generator, comprising: determining the capacity and type of the storage battery;
determining a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model corresponding to the capacity and the type of the storage battery according to the capacity and the type of the storage battery;
acquiring the current temperature, the current electric quantity and the optimal electric quantity of the storage battery;
and determining the target output voltage of the generator by inquiring a storage battery temperature-electric quantity-voltage three-dimensional mapping curve model according to the current temperature, the current electric quantity and the optimal electric quantity of the storage battery.
5. The charging device of a 12V start-stop lead-acid storage battery according to claim 4,
the judging module is further configured to: judging whether the vehicle meets an idle stop condition, judging whether the vehicle meets a starting condition when the vehicle is stopped in an idle state, and judging whether the output voltage of the generator meets a dynamic regulation condition after the vehicle is started;
the control module is further configured to: controlling the vehicle to idle stop when the vehicle satisfies an idle stop condition, and controlling the vehicle to start when the vehicle satisfies a start condition.
6. The charging device for the 12V start-stop lead-acid storage battery according to claim 4, wherein the control module is further configured to: and when the output voltage of the generator does not meet the dynamic regulation condition, controlling the generator to charge the storage battery by using a preset constant output voltage.
7. A vehicle, characterized in that a charging device of a 12V start-stop lead-acid battery according to any one of claims 4 to 6 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293287.4A CN111817417B (en) | 2019-04-12 | 2019-04-12 | Charging method and device of lead-acid storage battery for 12V start and stop and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910293287.4A CN111817417B (en) | 2019-04-12 | 2019-04-12 | Charging method and device of lead-acid storage battery for 12V start and stop and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111817417A CN111817417A (en) | 2020-10-23 |
| CN111817417B true CN111817417B (en) | 2023-04-18 |
Family
ID=72844442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910293287.4A Active CN111817417B (en) | 2019-04-12 | 2019-04-12 | Charging method and device of lead-acid storage battery for 12V start and stop and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111817417B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113964892B (en) * | 2021-09-23 | 2024-03-22 | 合众新能源汽车股份有限公司 | Intelligent power supplementing method for vehicle-mounted storage battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005067293A (en) * | 2003-08-21 | 2005-03-17 | Matsushita Electric Ind Co Ltd | Control method for lead storage battery |
| CN103543404B (en) * | 2012-07-10 | 2016-08-10 | 重庆长安汽车股份有限公司 | A kind of for idling start-stop system to the monitoring device of battery condition and method |
| CN105922985B (en) * | 2016-04-25 | 2018-09-28 | 广州汽车集团股份有限公司 | A kind of car deceleration energy-recuperation system and corresponding automobile |
| CN108544937B (en) * | 2018-03-23 | 2022-04-08 | 奇瑞汽车股份有限公司 | Automobile storage battery charging and discharging management method and system |
-
2019
- 2019-04-12 CN CN201910293287.4A patent/CN111817417B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111817417A (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2592468C1 (en) | Power supply control device | |
| US10054097B2 (en) | Vehicular control apparatus | |
| CN108515961B (en) | DCDC control method and system for 48V hybrid power system | |
| CN103238265B (en) | Battery charge controller and charge control method | |
| US20180233943A1 (en) | Power supply system for vehicle | |
| CN111433076B (en) | Electrical device for an electrically drivable motor vehicle and method for controlling the same | |
| US10804815B1 (en) | DC/AC inverter system supplied by integrated power networks to increase output power with robust auto stop control | |
| CN110316176A (en) | Control device | |
| CN113147503B (en) | Power management method for electric vehicle | |
| CN111923852A (en) | Vehicle generator control method and device | |
| KR20180006187A (en) | Vehicular Power System and the Controlling Method thereof | |
| US10850724B2 (en) | Management of the operation of an automotive dual battery electrical system with kinetic energy recovery during braking | |
| CN111817417B (en) | Charging method and device of lead-acid storage battery for 12V start and stop and vehicle | |
| CN109149679B (en) | Method for improving endurance mileage of electric automobile, power management controller and automobile | |
| CN113103882A (en) | Power distribution method and system based on extended range type automobile | |
| KR101500121B1 (en) | Method for auxilary battery power charge control | |
| CN112009457B (en) | Control method and controller of hybrid power system and hybrid power system | |
| CN114228568A (en) | Low-voltage power supply management method and system for electric vehicle | |
| US11584257B2 (en) | Method for reducing the overall power consumption of a parked vehicle | |
| CN112874303B (en) | New energy automobile safety monitoring method | |
| CN113696748A (en) | Fuel cell power supply system and control method and control device thereof | |
| CN108177615B (en) | Energy management system based on super capacitor | |
| CN111098810A (en) | Solar energy and generator double-power supply method and system for vehicle | |
| CN109661336B (en) | Method for adapting the charging strategy of a vehicle energy store according to the operating mode | |
| CN115009020A (en) | Power-supplementing wake-up device and method for low-voltage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |