CN114069792A - Method and system for starting intelligent charging of battery of electric vehicle - Google Patents
Method and system for starting intelligent charging of battery of electric vehicle Download PDFInfo
- Publication number
- CN114069792A CN114069792A CN202111404359.1A CN202111404359A CN114069792A CN 114069792 A CN114069792 A CN 114069792A CN 202111404359 A CN202111404359 A CN 202111404359A CN 114069792 A CN114069792 A CN 114069792A
- Authority
- CN
- China
- Prior art keywords
- temperature
- charging
- starting battery
- battery
- voltage
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 89
- 238000001514 detection method Methods 0.000 claims abstract description 68
- 230000004622 sleep time Effects 0.000 claims abstract description 12
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 230000007958 sleep Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 12
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000005059 dormancy Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000002618 waking effect Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- 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
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/005—Detection of state of health [SOH]
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
- H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a method and a system for starting intelligent charging of a battery of an electric vehicle, relating to the technical field of battery charging, wherein the method comprises the steps of determining an intelligent charging mode; if the voltage detection mode is selected, detecting the temperature of the starting battery in real time when the voltage of the starting battery is smaller than the lower limit value of the voltage, entering a corresponding charging process according to the temperature, and stopping charging the battery when the voltage of the battery is larger than the upper limit value of the voltage; if the timing wake-up mode is selected, when the set sleep time is reached and the voltage of the starting battery is smaller than the set voltage upper limit value, executing the step of detecting the temperature of the starting battery in real time, otherwise, the system enters the sleep mode; if the automatic detection mode is selected, calculating the time for charging next time before the system is dormant, and executing the step of detecting the temperature of the starting battery in real time when the charging time is reached. The method ensures that the battery is at the optimal charging temperature by adjusting the environmental temperature of the battery, and prolongs the service life and the standing time of the battery.
Description
Technical Field
The invention relates to the technical field of battery charging, in particular to a method and a system for starting intelligent charging of a battery of an electric vehicle.
Background
Along with the increasing intelligentization range of electric vehicles, the intelligent electronic devices of the electric vehicles are more and more. The electric vehicle starting battery is easy to generate a power shortage phenomenon when the automobile is in a long-time dormancy state, so that the electric vehicle cannot be normally started. Frequent power shortage leads to irreversible damage to the starting battery, and the service life of the starting battery is seriously shortened.
In order to solve the problems, the method for waking up the DC/DC converter at regular time is adopted in the market at present, when the voltage of the battery is lower than a limit value, the DC/DC converter is started to charge the started battery, the voltage is normal in the Nth time, and the power shortage phenomenon occurs in the N +1 times, so that the problem cannot be fundamentally solved.
Disclosure of Invention
The invention provides a method and a system for starting intelligent charging of a battery of an electric vehicle aiming at the problems and technical requirements, and the technical scheme of the invention is as follows:
a method for starting intelligent charging of a battery of an electric vehicle comprises the following steps:
determining an intelligent charging mode, wherein the intelligent charging mode comprises a voltage detection mode, a timing awakening mode and an automatic detection mode;
if the voltage detection mode is selected, detecting the voltage of the starting battery in real time, detecting the temperature of the starting battery in real time when the voltage is smaller than the lower limit value of the set voltage, entering a corresponding charging process according to the temperature, and stopping charging the starting battery when the voltage of the starting battery is larger than the upper limit value of the set voltage;
if the timing wake-up mode is selected, detecting the voltage of the starting battery in real time when the set sleep time is reached, and executing the step of detecting the temperature of the starting battery in real time when the voltage is smaller than the set voltage upper limit value, otherwise, sleeping the system and entering the next timing period;
if the automatic detection mode is selected, calculating the time for charging next time before the system is dormant, and executing the step of detecting the temperature of the starting battery in real time when the charging time is reached.
The further technical scheme is that the corresponding charging process is entered according to the temperature, and the method comprises the following steps:
if the temperature of the starting battery is lower than the first preset temperature, entering a low-temperature charging process, charging the starting battery according to low-temperature set current, and simultaneously heating the starting battery to raise the temperature;
if the temperature of the starting battery is higher than a second preset temperature, entering a high-temperature charging process, charging the starting battery according to high-temperature set current, and simultaneously cooling the starting battery, wherein the second preset temperature is higher than the first preset temperature;
and if the temperature of the starting battery is between the first preset temperature and the second preset temperature, entering a normal-temperature charging process, and charging the starting battery according to the normal-temperature set current.
The further technical scheme is that the time for charging the next time is calculated before the system is in a sleep state, and the method comprises the following steps:
before the system is dormant, the temperature of the current starting battery, the battery factory electric energy W and the dormancy power P of the vehicle are obtained, and a first available electric quantity coefficient q of the current starting battery is obtained according to a relation table of the temperature and the SOH1Obtaining a second available electric quantity coefficient q of the current starting battery according to the relation table of the temperature and the SOC2The time t for the next charging is calculated by the following formula:
the further technical scheme is that in the low-temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is between a third preset temperature and a second preset temperature, heating is stopped, and the normal-temperature charging process is started, wherein the third preset temperature is between the first preset temperature and the second preset temperature.
The further technical scheme is that in the high-temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is between a first preset temperature and a fourth preset temperature, heat dissipation is stopped, and the normal-temperature charging process is started, wherein the fourth preset temperature is between the first preset temperature and a second preset temperature.
The further technical scheme is that in the normal-temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is lower than a second preset temperature, the step of judging whether the voltage of the starting battery is higher than a set voltage upper limit value is carried out, and otherwise, the step of carrying out the high-temperature charging process is carried out.
The further technical scheme is that the method also comprises the following steps:
and obtaining the SOH of the starting battery after the charging is finished according to the relation between the temperature and the charging electric energy of the starting battery, and prompting to replace the starting battery when the SOH is smaller than a set value.
A system for intelligently charging a starting battery of an electric vehicle comprises the starting battery, a central processing unit, a charging unit, a voltage detection unit, a temperature regulation unit and a vehicle machine system, wherein the charging unit, the voltage detection unit and the temperature detection unit are connected with the central processing unit;
the vehicle-mounted machine system realizes man-machine interaction and is used for setting different intelligent charging modes, wherein the intelligent charging modes comprise a voltage detection mode, a timing awakening mode and an automatic detection mode; the vehicle-mounted machine system is also used for inputting the sleep time of the timing wake-up mode;
when the system is in a voltage detection mode, the central processing unit selects a starting temperature detection unit to detect the temperature of the starting battery in real time according to the voltage fed back by the voltage detection unit;
when the system is in a timing wake-up mode, the central processing unit selects a starting temperature detection unit to detect the temperature of a starting battery in real time according to the set sleep time;
when the system is in an automatic detection mode, the central processing unit calculates the time for charging the next time before the system is dormant, and selects a starting temperature detection unit to detect the temperature of the starting battery in real time according to the calculated charging time;
the central processing unit selects a corresponding charging process according to the temperature fed back by the temperature detection unit, starts the charging unit to charge the starting battery, and controls the temperature regulation unit to regulate the environmental temperature of the starting battery;
and the central processing unit selects the stop charging unit to charge the starting battery according to the charged voltage fed back by the voltage detection unit.
The charging unit comprises a power battery system and a DC/DC converter which are connected with the central processing unit, wherein the power battery system, the DC/DC converter and the starting battery are sequentially connected;
if the temperature fed back by the temperature detection unit is lower than a first preset temperature, the central processing unit selects a low-temperature charging process, starts the DC/DC converter and controls the power battery system to charge the starting battery according to low-temperature set current;
if the temperature fed back by the temperature detection unit is higher than a second preset temperature, the central processing unit selects a high-temperature charging process, starts the DC/DC converter, and controls the power battery system to charge the starting battery according to high-temperature set current, wherein the second preset temperature is higher than the first preset temperature;
if the temperature fed back by the temperature detection unit is between the first preset temperature and the second preset temperature, the central processing unit selects a normal-temperature charging process, starts the DC/DC converter, and controls the power battery system to charge the starting battery according to the normal-temperature set current.
The temperature adjusting unit comprises a heating module and a heat dissipation module, and control switches of the heating module and the heat dissipation module are in signal connection with the central processing unit;
if the system is in a low-temperature charging process, the central processing unit starts the heating module to heat the starting battery to raise the temperature;
if the system is in a high-temperature charging process, the central processing unit starts the heat dissipation module to dissipate heat and cool the starting battery.
The beneficial technical effects of the invention are as follows:
the system provides three intelligent charging modes for a user when the vehicle is in a dormant state, under each intelligent charging mode, different charging processes and charging currents are switched according to different temperatures, the ambient temperature of the starting battery is detected and adjusted, the starting battery is ensured to be at the optimal temperature in the charging process, the service life of the starting battery and the standing time can be prolonged, and the starting battery can work normally when the electric vehicle is parked for a long time, so that the normal use of the electric vehicle is ensured, and the failure condition of the intelligent charging system can not occur; in the voltage detection mode, the system detects the voltage of the starting battery in real time to judge whether to charge; in the automatic detection mode, calculating the time for charging the next time before the system is dormant, and automatically waking up the time for charging; in the timing wake-up mode, different from the prior art, when the system detects the voltage of the starting battery in real time and judges that the voltage is smaller than the upper limit value of the voltage, the system is awakened to charge; by adopting the method, the capacity of the starting battery can be properly reduced, the SOH of the starting battery is obtained after each charging is finished so as to predict the service life of the starting battery, and a user is informed to replace a small battery in advance.
Drawings
Fig. 1 is a flowchart of a method of a voltage detection mode and an automatic detection mode in an intelligent charging method for a starting battery of an electric vehicle provided by the present application.
Fig. 2 is a flowchart of a method for initiating a timed wake-up mode in a method for intelligently charging a battery of an electric vehicle according to the present application.
Fig. 3 is a schematic diagram of an electric vehicle start-up battery intelligent charging system provided by the present application.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
The application provides a method for starting intelligent charging of a battery of an electric vehicle, which comprises the following steps:
and determining an intelligent charging mode, wherein the intelligent charging mode comprises a voltage detection mode, a timing awakening mode and an automatic detection mode.
(1) If the voltage detection mode is selected, detecting the voltage of the starting battery in real time, detecting the temperature of the starting battery in real time when the voltage is smaller than the lower limit value of the set voltage, entering a corresponding charging process according to the temperature, and stopping charging the starting battery when the voltage of the starting battery is larger than the upper limit value of the set voltage;
(2) if the timing wake-up mode is selected, detecting the voltage of the starting battery in real time when the set sleep time is reached, and executing the step of detecting the temperature of the starting battery in real time when the voltage is smaller than the set voltage upper limit value, otherwise, sleeping the system and entering the next timing period;
(3) if the automatic detection mode is selected, calculating the time for charging next time before the system is dormant, and executing the step of detecting the temperature of the starting battery in real time when the charging time is reached.
As shown in fig. 1, the method (1) specifically includes the following steps:
s1: the voltage of the starting battery is detected in real time.
S2: and judging the relation between the voltage and the set lower voltage limit value V1, and detecting the temperature of the starting battery in real time when the voltage is less than the set lower voltage limit value V1.
S3: and judging the relation between the temperature and the preset temperature, if the temperature of the starting battery is less than a first preset temperature K1, executing S4, if the temperature of the starting battery is greater than a second preset temperature K2, executing S5, and otherwise executing S6.
S4: and if the temperature of the starting battery is lower than the first preset temperature K1, entering a low-temperature charging process, charging the starting battery according to the low-temperature set current, and simultaneously heating the starting battery to raise the temperature, and executing S7.
S5: and if the temperature of the starting battery is higher than a second preset temperature K2, entering a high-temperature charging process, charging the starting battery according to the high-temperature set current, and simultaneously cooling the starting battery, wherein K2 is higher than K1, and executing S8.
S6: if the temperature of the starting battery is between the first preset temperature K1 and the second preset temperature K2, the normal temperature charging process is entered, the starting battery is charged according to the normal temperature set current, and S9 is executed.
S7: and monitoring the temperature of the starting battery in real time, and judging the relation between the temperature and the preset temperature. When the temperature is between the third preset temperature K3 and the second preset temperature K2, the heating is stopped, and the normal temperature charging process is performed, that is, the step of charging the starting battery according to the normal temperature set current in S6 is performed. Wherein the third preset temperature K3 is between the first preset temperature K1 and the second preset temperature K2, and optionally, K3 ═ K1+ 3.
S8: and monitoring the temperature of the starting battery in real time, and judging the relation between the temperature and the preset temperature. When the temperature is between the first preset temperature K1 and the fourth preset temperature K4, the heat dissipation is stopped, and the normal temperature charging process is performed, that is, the step of charging the starting battery according to the normal temperature set current in S6 is performed. Wherein the fourth preset temperature K4 is between the first preset temperature K1 and the second preset temperature K2, and optionally, K4 ═ K2-5.
S9: and monitoring the temperature of the starting battery in real time, and judging the relation between the temperature and the preset temperature. And when the temperature is lower than the second preset temperature K2, executing S10, otherwise, returning to the step of entering the high-temperature charging process, namely executing the step of charging the starting battery according to the high-temperature set current in S5.
S10: and judging the relation between the voltage of the starting battery and the set upper voltage limit value V2, executing S11 when the voltage of the starting battery is greater than the set upper voltage limit value V2, otherwise, returning to the step of the normal-temperature charging process, namely executing the step of charging the starting battery according to the normal-temperature set current in S6.
S11: and stopping charging the starting battery, and acquiring the SOH of the starting battery after the charging is finished according to the relation between the temperature and the charging electric energy of the starting battery. The specific method for calculating the SOH of the starting battery adopts the prior art in the field, and is not described herein again.
S12: and judging the relation between the SOH of the starting battery and a set value, prompting to replace the starting battery when the SOH is smaller than the set value, and otherwise, closing the system and stopping the dormancy of the whole vehicle.
As shown in fig. 2, the method (2) specifically includes the following steps:
s1: and when the set sleep time is reached, detecting the voltage of the starting battery in real time.
S2: and judging the relation between the voltage and the set upper voltage limit value V2, and detecting the temperature of the starting battery in real time when the voltage is less than the set upper voltage limit value V2. Otherwise, the system sleeps and enters the next timing period.
The steps of subsequent S3-S12 are the same as the steps of S3-S12 in method (1), and are not repeated here.
When the system is in the timed wake-up mode, the artificially set sleep time is not constant, which may cause the voltage for starting the battery to quickly exceed the upper voltage limit V2 when the sleep time is short. Therefore, before performing S7, the method further comprises: and judging the relation between the voltage of the starting battery and the set upper voltage limit value V2, and directly executing S11 when the voltage of the starting battery is greater than the set upper voltage limit value V2, otherwise executing S7.
Similarly, before performing S8, the method further comprises: and judging the relation between the voltage of the starting battery and the set upper voltage limit value V2, and directly executing S11 when the voltage of the starting battery is greater than the set upper voltage limit value V2, otherwise executing S7.
As shown in fig. 1, the method (3) specifically includes the following steps:
s1: calculating the time for charging the next time before the system is dormant, specifically comprising:
before the system is dormant, the temperature of the current starting battery, the battery delivery electric energy W and the dormancy power P (namely static power) of the vehicle are obtained, and a first available electric quantity coefficient q of the current starting battery is obtained according to a relation table of the temperature and the SOH1Obtaining a second available electric quantity coefficient q of the current starting battery according to the relation table of the temperature and the SOC2The time t for the next charging is calculated by the following formula:
s2: and when the charging time t is reached, detecting the temperature of the starting battery in real time.
The steps of subsequent S3-S12 are the same as the steps of S3-S12 in method (1), and are not repeated here.
Based on the method, the application also provides an intelligent charging system for the starting battery of the electric vehicle, as shown in fig. 3, the system comprises the starting battery, a central processing unit, a charging unit, a voltage detection unit, a temperature regulation unit and a vehicle machine system, wherein the charging unit, the voltage detection unit and the temperature detection unit are connected with the starting battery respectively, a control switch of the temperature regulation unit is connected with the starting battery, and the functions of each unit and the system are described below respectively.
The vehicle-mounted device system realizes man-machine interaction and is used for setting different intelligent charging modes, wherein the intelligent charging modes comprise a voltage detection mode, a timing awakening mode and an automatic detection mode. The vehicle machine system is also used for inputting the sleep time of the timing wake-up mode.
And 2, when the system is in a voltage detection mode, the central processing unit selects the starting temperature detection unit to detect the temperature of the starting battery in real time according to the voltage fed back by the voltage detection unit.
When the system is in the timing wake-up mode, the central processing unit selects the starting temperature detection unit to detect the temperature of the starting battery in real time according to the set sleep time.
When the system is in the automatic detection mode, the central processing unit calculates the time for charging next time before the system is dormant, and selects the starting temperature detection unit to detect the temperature of the starting battery in real time according to the calculated charging time.
The central processing unit selects a corresponding charging process according to the temperature fed back by the temperature detection unit, the charging unit is started to charge the starting battery, and the temperature regulation unit is controlled to regulate the environmental temperature of the starting battery.
And the central processing unit selects the stop charging unit to charge the starting battery according to the charged voltage fed back by the voltage detection unit.
Optionally, the central processing unit obtains the SOH of the starting battery after the charging is finished according to the relationship between the temperature and the charging electric energy of the starting battery, and when the SOH is smaller than a set value, the vehicle-mounted device system prompts a user to replace the starting battery.
And the charging unit comprises a power battery system and a DC/DC converter which are connected with the central processing unit, and the power battery system, the DC/DC converter and the starting battery are sequentially connected.
And if the temperature fed back by the temperature detection unit is lower than the first preset temperature K1, the central processing unit selects a low-temperature charging process, starts the DC/DC converter and controls the power battery system to charge the starting battery according to the low-temperature set current.
And if the temperature fed back by the temperature detection unit is higher than a second preset temperature K2, the central processing unit selects a high-temperature charging process, starts the DC/DC converter and controls the power battery system to charge the starting battery according to high-temperature set current, wherein K2 is higher than K1.
And if the temperature fed back by the temperature detection unit is between the first preset temperature K1 and the second preset temperature K2, selecting a normal-temperature charging process by the central processor, starting the DC/DC converter, and controlling the power battery system to charge the starting battery according to the normal-temperature set current.
And the temperature adjusting unit comprises a heating module and a heat dissipation module, and a control switch S1 of the heating module and a control switch S2 of the heat dissipation module are in signal connection with the central processing unit.
If the system is in the low-temperature charging process, the central processing unit turns off S1 and starts the heating module to heat the starting battery to raise the temperature.
If the system is in the high-temperature charging process, the central processing unit turns off S2 and starts the heat dissipation module to dissipate heat and cool the starting battery.
The system provides three intelligent charging modes for a user when the vehicle is in a dormant state, under each intelligent charging mode, different charging processes and charging currents are switched according to different temperatures, the ambient temperature of the starting battery is detected and adjusted, the starting battery is ensured to be at the optimal temperature in the charging process, the service life of the starting battery and the standing time can be prolonged, and the starting battery can work normally when the electric vehicle is parked for a long time, so that the normal use of the electric vehicle is ensured, and the failure condition of the intelligent charging system can not occur; in the voltage detection mode, the system detects the voltage of the starting battery in real time to judge whether to charge; in the automatic detection mode, calculating the time for charging the next time before the system is dormant, and automatically waking up the time for charging; in the timing wake-up mode, different from the prior art, when the system detects the voltage of the starting battery in real time and judges that the voltage is smaller than the upper limit value of the voltage, the system is awakened to charge; by adopting the method, the capacity of the starting battery can be properly reduced, the SOH of the starting battery is obtained after each charging is finished so as to predict the service life of the starting battery, and a user is informed to replace a small battery in advance.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiment. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and concept of the present invention are to be considered as included within the scope of the present invention.
Claims (10)
1. A method for intelligent charging of an electric vehicle starting battery, the method comprising:
determining an intelligent charging mode, wherein the intelligent charging mode comprises a voltage detection mode, a timing awakening mode and an automatic detection mode;
if the voltage detection mode is selected, detecting the voltage of a starting battery in real time, detecting the temperature of the starting battery in real time when the voltage is smaller than a set voltage lower limit value, entering a corresponding charging process according to the temperature, and stopping charging the starting battery when the voltage of the starting battery is larger than the set voltage upper limit value;
if the timing awakening mode is selected, detecting the voltage of the starting battery in real time when the set dormancy time is reached, and executing the step of detecting the temperature of the starting battery in real time when the voltage is smaller than the set upper limit value of the voltage, otherwise, the system sleeps and enters the next timing period;
and if the automatic detection mode is selected, calculating the time for charging the next time before the system is dormant, and executing the step of detecting the temperature of the starting battery in real time when the charging time is reached.
2. The method for starting intelligent charging of the battery of the electric vehicle according to claim 1, wherein entering the corresponding charging process according to the temperature comprises:
if the temperature of the starting battery is lower than a first preset temperature, entering a low-temperature charging process, charging the starting battery according to a low-temperature set current, and simultaneously heating the starting battery;
if the temperature of the starting battery is higher than a second preset temperature, entering a high-temperature charging process, charging the starting battery according to a high-temperature set current, and simultaneously cooling the starting battery, wherein the second preset temperature is higher than the first preset temperature;
and if the temperature of the starting battery is between the first preset temperature and the second preset temperature, entering a normal-temperature charging process, and charging the starting battery according to the normal-temperature set current.
3. The method for intelligent charging of the battery started by the electric vehicle as claimed in claim 1, wherein the calculating of the time for next charging before the system is dormant comprises:
before the system is dormant, the temperature of the current starting battery, the battery factory electric energy W and the dormancy power P of the vehicle are obtained, and a first available electric quantity coefficient q of the current starting battery is obtained according to a relation table of the temperature and the SOH1Obtaining a second available electric quantity coefficient q of the current starting battery according to the relation table of the temperature and the SOC2The time t for the next charging is calculated by the following formula:
4. the method for intelligently charging the starting battery of the electric vehicle as claimed in claim 2, wherein in the low-temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is between a third preset temperature and a second preset temperature, the heating is stopped, and the normal-temperature charging process is performed, wherein the third preset temperature is between the first preset temperature and the second preset temperature.
5. The method for intelligently charging the starting battery of the electric vehicle as claimed in claim 2, wherein in the high-temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is between the first preset temperature and a fourth preset temperature, the heat dissipation is stopped, and the normal-temperature charging process is performed, wherein the fourth preset temperature is between the first preset temperature and the second preset temperature.
6. The method for intelligently charging the starting battery of the electric vehicle as claimed in claim 2, wherein in the normal temperature charging process, the temperature of the starting battery is monitored in real time, when the temperature is lower than the second preset temperature, the step of judging whether the voltage of the starting battery is higher than a set upper limit voltage is carried out, otherwise, the step of entering the high temperature charging process is carried out.
7. The method for intelligent charging of an electric vehicle enabled battery according to any of claims 1-6, further comprising:
and obtaining the SOH of the starting battery after the charging is finished according to the relation between the temperature and the charging electric energy of the starting battery, and prompting to replace the starting battery when the SOH is smaller than a set value.
8. The system for intelligently charging the starting battery of the electric vehicle is characterized by comprising the starting battery, a central processing unit, a charging unit, a voltage detection unit, a temperature regulation unit and a vehicle machine system, wherein the charging unit, the voltage detection unit and the temperature detection unit are connected with the starting battery respectively;
the vehicle-mounted machine system realizes man-machine interaction and is used for setting different intelligent charging modes, wherein the intelligent charging modes comprise a voltage detection mode, a timing awakening mode and an automatic detection mode; the vehicle-mounted machine system is also used for inputting the sleep time of the timing wake-up mode;
when the system is in the voltage detection mode, the central processing unit selects to start the temperature detection unit according to the voltage fed back by the voltage detection unit to detect the temperature of the starting battery in real time;
when the system is in the timing wake-up mode, the central processing unit selectively starts the temperature detection unit according to the set sleep time to detect the temperature of the started battery in real time;
when the system is in the automatic detection mode, the central processing unit calculates the time for charging the next time before the system is dormant, and selects to start the temperature detection unit to detect the temperature of the started battery in real time according to the calculated charging time;
the central processing unit selects a corresponding charging process according to the temperature fed back by the temperature detection unit, starts the charging unit to charge the starting battery, and controls the temperature regulation unit to regulate the environmental temperature of the starting battery;
and the central processing unit selects to stop the charging unit to charge the starting battery according to the charged voltage fed back by the voltage detection unit.
9. The system for intelligently charging the starting battery of the electric vehicle as claimed in claim 8, wherein the charging unit comprises a power battery system and a DC/DC converter connected with the central processing unit, and the power battery system, the DC/DC converter and the starting battery are connected in sequence;
if the temperature fed back by the temperature detection unit is lower than a first preset temperature, the central processing unit selects a low-temperature charging process, starts the DC/DC converter, and controls the power battery system to charge the starting battery according to a low-temperature set current;
if the temperature fed back by the temperature detection unit is higher than a second preset temperature, the central processing unit selects a high-temperature charging process, starts the DC/DC converter, and controls the power battery system to charge the starting battery according to a high-temperature set current, wherein the second preset temperature is higher than the first preset temperature;
and if the temperature fed back by the temperature detection unit is between the first preset temperature and the second preset temperature, the central processing unit selects a normal-temperature charging process, starts the DC/DC converter, and controls the power battery system to charge the starting battery according to the normal-temperature set current.
10. The system for intelligently charging the starting battery of the electric vehicle as recited in claim 9, wherein the temperature adjusting unit comprises a heating module and a heat dissipation module, and control switches of the heating module and the heat dissipation module are in signal connection with the central processing unit;
if the system is in the low-temperature charging process, the central processing unit starts the heating module to heat the starting battery for temperature rise;
if the system is in the high-temperature charging process, the central processing unit starts the heat dissipation module to dissipate heat and cool the starting battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404359.1A CN114069792A (en) | 2021-11-24 | 2021-11-24 | Method and system for starting intelligent charging of battery of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111404359.1A CN114069792A (en) | 2021-11-24 | 2021-11-24 | Method and system for starting intelligent charging of battery of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114069792A true CN114069792A (en) | 2022-02-18 |
Family
ID=80275860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111404359.1A Pending CN114069792A (en) | 2021-11-24 | 2021-11-24 | Method and system for starting intelligent charging of battery of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114069792A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801880A (en) * | 2022-05-25 | 2022-07-29 | 中国第一汽车股份有限公司 | Power battery power supplement control method and device, vehicle and processor |
| CN115166538A (en) * | 2022-06-30 | 2022-10-11 | 东莞新能安科技有限公司 | Charging detection method, device, equipment and product |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150377976A1 (en) * | 2010-05-21 | 2015-12-31 | Qnovo Inc. | Method and circuitry to adaptively charge a battery/cell using the state of health thereof |
| CN105553012A (en) * | 2015-12-31 | 2016-05-04 | 惠州市亿能电子有限公司 | Low-temperature charging control system and control method |
| CN106347130A (en) * | 2016-09-30 | 2017-01-25 | 北京新能源汽车股份有限公司 | Method and device for controlling low-voltage power supply of electric automobile |
| CN106981898A (en) * | 2017-03-29 | 2017-07-25 | 知豆电动汽车有限公司 | A kind of electric automobile starts battery automatic recharging method and system |
| CN108847506A (en) * | 2018-06-20 | 2018-11-20 | 安徽江淮汽车集团股份有限公司 | A kind of charging management method and system of power battery |
| CN109080460A (en) * | 2018-07-06 | 2018-12-25 | 北京长城华冠汽车科技股份有限公司 | Low tension battery charge control method and device |
| CN110308405A (en) * | 2019-07-26 | 2019-10-08 | 四川嘉垭汽车科技有限公司 | Charge states of lithium ion battery and health status estimation method at a temperature of varying environment |
| KR20200021368A (en) * | 2018-08-20 | 2020-02-28 | 주식회사 뷰커뮤니케이션 | Battery Management system based on Cell Charge up Current |
| CN111361457A (en) * | 2018-12-26 | 2020-07-03 | 郑州宇通客车股份有限公司 | Vehicle and heating control method of power battery of vehicle |
| CN111376721A (en) * | 2018-12-28 | 2020-07-07 | 观致汽车有限公司 | Electric vehicle storage battery power supplementing method and system based on alarm clock mode |
| CN112147513A (en) * | 2020-09-23 | 2020-12-29 | 南京工程学院 | Power battery SOC multidimensional calibration method |
| CN112213641A (en) * | 2019-10-30 | 2021-01-12 | 蜂巢能源科技有限公司 | Battery management system and method for obtaining remaining time |
| CN112659978A (en) * | 2020-12-07 | 2021-04-16 | 北京车和家信息技术有限公司 | Charging heating control method and device for power battery, medium, equipment and vehicle |
| CN113386590A (en) * | 2020-03-11 | 2021-09-14 | 北京新能源汽车股份有限公司 | Charging control method and device and electric automobile |
| CN113400957A (en) * | 2021-07-27 | 2021-09-17 | 上海洛轲智能科技有限公司 | Self-starting charging method and device for extended range vehicle, electronic equipment and medium |
| CN113553534A (en) * | 2021-07-05 | 2021-10-26 | 广州小鹏汽车科技有限公司 | Method and device for calculating quick charging remaining time, vehicle and storage medium |
-
2021
- 2021-11-24 CN CN202111404359.1A patent/CN114069792A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150377976A1 (en) * | 2010-05-21 | 2015-12-31 | Qnovo Inc. | Method and circuitry to adaptively charge a battery/cell using the state of health thereof |
| CN105553012A (en) * | 2015-12-31 | 2016-05-04 | 惠州市亿能电子有限公司 | Low-temperature charging control system and control method |
| CN106347130A (en) * | 2016-09-30 | 2017-01-25 | 北京新能源汽车股份有限公司 | Method and device for controlling low-voltage power supply of electric automobile |
| CN106981898A (en) * | 2017-03-29 | 2017-07-25 | 知豆电动汽车有限公司 | A kind of electric automobile starts battery automatic recharging method and system |
| CN108847506A (en) * | 2018-06-20 | 2018-11-20 | 安徽江淮汽车集团股份有限公司 | A kind of charging management method and system of power battery |
| CN109080460A (en) * | 2018-07-06 | 2018-12-25 | 北京长城华冠汽车科技股份有限公司 | Low tension battery charge control method and device |
| KR20200021368A (en) * | 2018-08-20 | 2020-02-28 | 주식회사 뷰커뮤니케이션 | Battery Management system based on Cell Charge up Current |
| CN111361457A (en) * | 2018-12-26 | 2020-07-03 | 郑州宇通客车股份有限公司 | Vehicle and heating control method of power battery of vehicle |
| CN111376721A (en) * | 2018-12-28 | 2020-07-07 | 观致汽车有限公司 | Electric vehicle storage battery power supplementing method and system based on alarm clock mode |
| CN110308405A (en) * | 2019-07-26 | 2019-10-08 | 四川嘉垭汽车科技有限公司 | Charge states of lithium ion battery and health status estimation method at a temperature of varying environment |
| CN112213641A (en) * | 2019-10-30 | 2021-01-12 | 蜂巢能源科技有限公司 | Battery management system and method for obtaining remaining time |
| CN113386590A (en) * | 2020-03-11 | 2021-09-14 | 北京新能源汽车股份有限公司 | Charging control method and device and electric automobile |
| CN112147513A (en) * | 2020-09-23 | 2020-12-29 | 南京工程学院 | Power battery SOC multidimensional calibration method |
| CN112659978A (en) * | 2020-12-07 | 2021-04-16 | 北京车和家信息技术有限公司 | Charging heating control method and device for power battery, medium, equipment and vehicle |
| CN113553534A (en) * | 2021-07-05 | 2021-10-26 | 广州小鹏汽车科技有限公司 | Method and device for calculating quick charging remaining time, vehicle and storage medium |
| CN113400957A (en) * | 2021-07-27 | 2021-09-17 | 上海洛轲智能科技有限公司 | Self-starting charging method and device for extended range vehicle, electronic equipment and medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801880A (en) * | 2022-05-25 | 2022-07-29 | 中国第一汽车股份有限公司 | Power battery power supplement control method and device, vehicle and processor |
| CN115166538A (en) * | 2022-06-30 | 2022-10-11 | 东莞新能安科技有限公司 | Charging detection method, device, equipment and product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3641046B1 (en) | Charging device and charging method | |
| US10270282B2 (en) | Solar charger comprising a charging unit for charging a power battery to a high voltage, a photo-sensitive unit for detecting light intensity, a switch unit for regulating connection between the charging unit and the power battery, and a control unit for regulating the charging of the power battery based on a saturation level and the light intensity | |
| CN109501619A (en) | A kind of power battery method for controlling temperature rise, device, equipment and automobile | |
| TWM574781U (en) | Solar cell system | |
| CN201113410Y (en) | Electric power driven car battery charging protector | |
| US20100033139A1 (en) | Power adapter for battery charger and method thereof | |
| CN1835331A (en) | Battery charger | |
| CN113071370B (en) | Management method of low-voltage lithium battery of electric automobile and complete automobile power supply switching method | |
| CN109818109A (en) | A kind of power battery low-temperature protection system and its guard method | |
| CN110350259B (en) | Low-temperature charging method for lithium ion battery | |
| KR20170030992A (en) | Charging apparatus and method for cooling overheated battery | |
| CN114069792A (en) | Method and system for starting intelligent charging of battery of electric vehicle | |
| CN113103917A (en) | Heating control method for low-temperature direct current charging of electric automobile | |
| JPH09161853A (en) | Temperature controller of secondary battery | |
| CN114889473A (en) | Electric automobile direct-current boost charging control system, control method and vehicle | |
| CN112776619A (en) | Charging method and device | |
| CN112649724A (en) | Power failure detection circuit and method and MCU chip | |
| CN115133625A (en) | Charging control method, device, equipment and storage medium | |
| CN115214392A (en) | Charging control method and charging system of electric automobile | |
| JP2009254055A (en) | Charger device and charging method | |
| CN114030389A (en) | Electric vehicle battery thermal management control method and device | |
| CN112277681A (en) | Low-temperature alternating-current charging system for electric automobile and control method thereof | |
| JP3691360B2 (en) | Secondary battery charging method and charger | |
| JP2021093799A (en) | Vehicle system control method and vehicle system | |
| CN216252238U (en) | Charging starting circuit for BMS battery management system and electric vehicle |
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 |