CN111525631B - Energy management method and device for lithium battery, electronic equipment and storage medium - Google Patents
Energy management method and device for lithium battery, electronic equipment and storage medium Download PDFInfo
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- CN111525631B CN111525631B CN202010192540.XA CN202010192540A CN111525631B CN 111525631 B CN111525631 B CN 111525631B CN 202010192540 A CN202010192540 A CN 202010192540A CN 111525631 B CN111525631 B CN 111525631B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 219
- 238000007726 management method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 49
- 230000003068 static effect Effects 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 239000002253 acid Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses an energy management method and device of a lithium battery, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery; determining a target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount; determining a target current of the battery according to the target charge amount and the current temperature; judging whether the current charge quantity is smaller than the first threshold value or not; if yes, charging the lithium battery according to the target current; according to the application, the target current of the battery is determined according to the target charge quantity of the lithium battery, and the battery is charged or discharged by the current, so that the problem of overcharging or overdischarging of the lithium battery is avoided, the reliability of the system is improved, meanwhile, the charging voltage of the battery is limited, the service life of the battery is protected, and the service life of the whole vehicle power supply system is further prolonged.
Description
Technical Field
The present application relates to the field of lithium battery charging technologies, and in particular, to an energy management method and apparatus for a lithium battery, an electronic device, and a storage medium.
Background
With the development and propaganda of intelligent driving systems and the increase of the expected degree of users for the intelligent driving systems, more and more vehicles begin to carry the intelligent driving systems, and the intelligent driving systems with higher levels gradually enter the field of view of people, but the higher the level of the intelligent driving systems, the higher the requirements on power supply safety; in the design of a vehicle low-voltage power supply system, for the selection of main batteries, more and more main factories try to use new technologies to achieve the purposes of weight reduction or lead inhibition, and the like, and different battery types correspond to different energy management strategies,
in the common design, a lead-acid battery is used as a 12V battery (comprising a main battery and a standby battery), the control logic is simple, and the battery is ensured to be fully charged under normal conditions;
but using a lead acid battery as the main battery has the following problems: 1) The service life of the lead-acid storage battery is difficult to diagnose, the reliable power supply of a vehicle power supply system cannot be ensured, and particularly after the vehicle is used for a long time, the normal work of the load on the main circuit of the vehicle cannot be ensured, so that the safety of the whole vehicle cannot be ensured; 2) The lead-acid storage battery has a lower service life and a heavier weight; 3) Lead-acid batteries cannot be actively controlled to cope with situations such as abnormal electrostatic flows;
disclosure of Invention
In order to solve the technical problems, the application discloses an energy management method of a lithium battery, which aims at the problems, and the application determines the target current of the battery according to the target charge quantity of the lithium battery, and charges or discharges the battery by the current, so that the problem of overcharging or overdischarging of the lithium battery is avoided, the reliability of the system is improved, and meanwhile, the charging voltage of the battery is limited, the service life of the battery is protected, and the service life of a whole vehicle power supply system is further prolonged.
In order to achieve the above object, the present application provides an energy management method of a lithium battery, the method comprising: acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery;
determining a target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;
determining a target current of the battery according to the target charge amount and the current temperature;
comparing the current charge quantity with a preset first threshold value;
if the current charge quantity is smaller than the first threshold value, charging the lithium battery according to the target current;
and discharging the lithium battery according to the target current if the current charge quantity is larger than the first threshold value.
Further, after the charging of the lithium battery according to the target current, the method further includes:
acquiring the voltages at two ends of a lithium battery in the charging process in real time;
judging whether the voltage meets a first preset condition or not;
if yes, charging the lithium battery with a preset current limit value.
Further, the method further comprises the following steps:
acquiring the change rate of the voltage at two ends of the lithium battery in the charging or discharging process;
judging whether the change rate of the voltage is smaller than or equal to a preset second threshold value;
if so, the battery is charged or discharged while maintaining the rate of change of the voltage.
Further, the determining the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount includes:
subtracting the current charge quantity from the preset standard charge quantity to obtain a charge quantity difference value;
and the target charge quantity of the charge quantity difference lithium battery is obtained.
Further, the method further comprises the following steps:
acquiring current charge quantity of a lithium battery in a vehicle stationary mode, current temperature of the lithium battery and static current data of the lithium battery in a preset time period;
judging whether the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition or not;
if so, the discharge of the lithium battery is terminated.
Further, the determining whether the current charge amount of the lithium battery, the current temperature of the lithium battery, and the electrostatic flow data satisfy a second preset condition includes:
comparing the current charge amount of the lithium battery with a preset third threshold value, comparing the current temperature of the lithium battery with a preset fourth threshold value, and comparing the static current data with a third preset condition;
and when the current temperature of the lithium battery is greater than a preset fourth threshold value, and/or the current charge amount of the lithium battery is smaller than a preset third threshold value and the static flow data meets a third preset condition, judging that the current charge amount of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition.
The application provides an energy management device of a lithium battery, which comprises:
the information acquisition module is used for acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery;
the target charge quantity determining module is used for determining the target charge quantity of the lithium battery according to the current charge quantity and the preset standard charge quantity;
a target current determining module, configured to determine a target current of the battery according to the target charge amount and the current temperature;
the comparison module is used for comparing the current charge quantity with a preset first threshold value;
the first charging module is used for charging the lithium battery according to the target current when the current charge quantity is smaller than the first threshold value;
and the first discharging module is used for discharging the lithium battery according to the target current when the current charge quantity is larger than the first threshold value.
Further, the method further comprises the following steps:
the voltage acquisition module is used for acquiring the voltages at two ends of the lithium battery in the charging process in real time;
the first judging module is used for judging whether the voltage meets a first preset condition or not;
and the first processing module is used for stopping charging the lithium battery.
The application provides an electronic device comprising a processor and a memory, wherein at least one instruction, at least one section of program, code set or instruction set is stored in the memory, and the at least one instruction, the at least one section of program, the code set or instruction set is loaded and executed by the processor to realize the energy management method of the lithium battery.
The present application provides a computer readable storage medium having stored therein at least one instruction, at least one program, code set, or instruction set loaded and executed by a processor to implement a method of energy management for a lithium battery as described above.
The embodiment of the application has the following beneficial effects:
according to the energy management method of the lithium battery, the target current of the battery is determined according to the target charge quantity of the lithium battery, and the battery is charged or discharged by the current, so that the problem of overcharging or overdischarging of the lithium battery is avoided, the reliability of the system is improved, meanwhile, the charging voltage of the battery is limited, the service life of the battery is prolonged, and the service life of a whole vehicle power supply system is further prolonged.
Drawings
In order to more clearly illustrate the energy management method, apparatus, electronic device and storage medium of a lithium battery according to the present application, the drawings required for the embodiments will be briefly described, and it will be apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is an energy management system of a lithium battery according to an embodiment of the present application;
fig. 2 is a schematic flow chart of an energy management method of a lithium battery according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a charging limiting method according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a method for managing energy of a lithium battery in a stationary state of a vehicle according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an energy management device for a lithium battery according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device for implementing an energy management method for a lithium battery according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, fig. 1 shows a system that may be used to implement the embodiment of the present application, as shown in fig. 1, the system may at least include a lithium battery charging device 01 and a terminal 02, where the lithium battery charging device 01 and the terminal 02 communicate with each other, so as to implement charging of a lithium battery according to a current charge amount, a preset standard charge amount, and a current temperature of the lithium battery obtained by the lithium battery charging device.
The terminal 02 may be a vehicle control device, a smart phone, a desktop computer, a tablet computer, a notebook computer, a digital assistant, an intelligent wearable device, or other type of entity device; wherein, intelligent wearable equipment can include intelligent bracelet, intelligent wrist-watch, intelligent glasses, intelligent helmet etc.. Of course, the terminal 02 is not limited to the above electronic device with a certain entity, but may be software running in the above electronic device, for example, the terminal 02 may be a web page or an application provided to a user by a service provider.
The terminal 02 may include a display, a memory device and a processor connected by a data bus. The display screen is used for displaying an operation interface or interacting with a user and the like, and can be a touch screen of a car machine, a mobile phone or a tablet personal computer and the like. The storage device is used for storing program codes, data materials and the like of the shooting device, and the storage device can be a memory of the terminal 02, or can be a storage device such as a smart media card (smart media card), a secure digital card (secure digital card), a flash memory card (flash card) and the like. The processor may be a single-core or multi-core processor.
The following describes an energy management method of a lithium battery based on the above system according to fig. 2, which can be applied to a vehicle having batteries of various voltages; specifically, the batteries with various voltages can comprise a 12V super capacitor, a 12V lithium battery, a 48V super capacitor, a high-voltage battery and the like.
In the present description embodiments, the present application may include, but is not limited to, an energy management method for a 12V lithium battery.
In the embodiment of the present specification, a 12V lithium battery may be used as the main battery, and the 12V lithium battery may include, but is not limited to, 4 LFP system lithium battery cells of 45Ah, and four lithium battery cells are connected in series; the 12V lithium battery can control the weight below 6kg, and has a great weight reduction effect compared with the existing lead-acid battery.
In the illustrated embodiment, a battery system including a 12V lithium battery as a main battery has active or passive equalization capability therein; the 12V lithium battery is internally integrated with a controller, and the controller has the function of monitoring signals such as voltage, temperature, current and the like and communicates through LIN.
In the embodiment of the specification, a resettable safety and disconnecting device is integrated inside the lithium battery, and the disconnecting device is used for disconnecting a power supply line of the lithium battery; the resettable safety device is used for reconnecting after the power supply circuit of the lithium battery is disconnected.
Referring to fig. 2, a flowchart of a method for energy management of a lithium battery according to an embodiment of the present application is shown, where the method operation steps described in the embodiment or the flowchart are provided, but based on the conventional method; or the non-inventive labor may include more or fewer operational steps. The step sequence listed in the embodiments is only one way of a plurality of step execution sequences, and does not represent the only execution sequence, and the energy management method of the lithium battery in the present application can be executed according to the method sequence shown in the embodiments or the drawings. As shown in fig. 2, the method includes:
s201, acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery;
it should be noted that, in the embodiment of the present disclosure, the current temperature of the lithium battery may be detected by an internal controller;
the preset standard charge amount may be 90%.
S203, determining the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;
in this embodiment of the present disclosure, the determining the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount includes:
subtracting the current charge quantity from the preset standard charge quantity to obtain a charge quantity difference value;
and the target charge quantity of the charge quantity difference lithium battery is obtained.
In the embodiment of the present disclosure, the current charge amount may be subtracted from the preset standard charge amount, and the obtained charge amount difference may be the target charge amount of the lithium battery.
For example, when the current charge amount is 0, the target charge amount may be 0 to 90%, that is, 90%.
S205, determining a target current of the battery according to the target charge amount and the current temperature;
in the embodiment of the specification, determining the target current of the battery according to the relation slope between the target charge amount and the current temperature;
for example, when the lithium battery temperature is-30 ℃, the target charge amount is-90%, the target current of the battery is 30A; when the temperature of the lithium battery is-30 ℃ and the target charge quantity is-20%, the target current of the battery is 30A; at this time, it may be determined that the slope of the relationship between the target charge amount and the current temperature is 1; but the relationship slope is not limited to equal to 1.
S207, comparing the current charge quantity with a preset first threshold value;
in the embodiment of the present disclosure, the preset first threshold may include, but is not limited to, a value of a standard charge amount, that is, the first threshold may be 90%;
and S209, if the current charge quantity is smaller than the first threshold value, charging the lithium battery according to the target current.
In the embodiment of the present specification, when the current charge amount is less than 90%, the lithium battery is charged according to the target current.
S211, if the current charge amount is greater than the first threshold value, discharging the lithium battery according to the target current
In the embodiment of the present specification, if the current charge amount is greater than 90%, the lithium battery is discharged according to the target current.
In another embodiment of the present disclosure, if the current charge amount is equal to the preset first threshold value, the battery is not charged or discharged, that is, the target current of the battery is 0A.
As shown in fig. 3, in the embodiment of the present disclosure, a schematic flow chart of a charge limiting method provided in the embodiment of the present disclosure is shown; the specific steps are as follows:
after charging the lithium battery according to the target current, further comprising:
s301, acquiring voltages at two ends of a lithium battery in a charging process in real time;
in the embodiment of the specification, the voltage at two ends of the lithium battery is obtained in the process of charging the lithium battery at the current temperature of the lithium battery;
s303, judging whether the voltage meets a first preset condition;
in this embodiment of the present disclosure, the determining whether the voltage meets the first preset condition includes:
judging whether the voltage of two ends of the lithium battery is larger than or equal to a preset fifth threshold value;
if yes, judging that the voltage meets a first preset condition;
specifically, the first preset condition may include, but is not limited to, a voltage across the lithium battery being equal to or greater than a maximum threshold of a charging voltage at a current temperature of the lithium battery; the preset fifth threshold may include, but is not limited to, a maximum threshold of the charging voltage at the current temperature of the lithium battery;
for example, however, the maximum charge voltage of a lithium battery is 13.6V when the current temperature of the lithium battery is-10 ℃.
Specifically, the relationship between the temperature of the vehicle lithium battery and its maximum charging voltage may include, but is not limited to, the relationship shown in the following table;
| Temp(℃) | -40 | -10 | 0 | 10 | 45 | 65 |
| Voltage(V) | 13.6 | 13.6 | 13.7 | 14.4 | 14.4 | 13.6 |
and S305, if yes, charging the lithium battery with a preset current limit value.
In the present specification embodiment, the preset current limit may include, but is not limited to, a current of 0 ampere (a); and if the voltage at two ends of the lithium battery reaches a preset fifth threshold value, charging the lithium battery with a current of 0A.
The application limits the charging voltage of the battery according to the current temperature of the lithium battery, and can protect the service life of the battery.
In another embodiment of the present specification, in the process of charging and discharging the lithium battery, further comprising:
s1, acquiring the change rate of the voltage at two ends of a lithium battery in the charging or discharging process;
in the embodiment of the present disclosure, the rate of change of the voltage across the lithium battery is obtained in real time during the charging and discharging of the lithium battery.
S2, judging whether the change rate of the voltage is smaller than or equal to a preset second threshold value;
in the present embodiment, the preset second threshold may include, but is not limited to, 100mV/s, that is, determining whether the increase or decrease in voltage per second is 100mV or less.
And S3, if yes, maintaining the change rate of the voltage to charge or discharge the battery.
In the embodiment of the present disclosure, if the rate of change of the voltage is less than or equal to the preset second threshold, the rate of change may be maintained to continue charging or discharging the lithium battery;
specifically, it is also possible that the rate of rise or fall of the control voltage is not lower than 100mV/s.
In the embodiment of the present specification, during running of the vehicle,
monitoring the state of a battery disconnecting device in real time;
judging whether the state of the disconnecting device is an opened state;
if yes, an alarm is sent out to remind the driver that the vehicle has risks.
As shown in fig. 4, in the embodiment of the present disclosure, a flow chart of a method for managing energy of a lithium battery in a stationary state of a vehicle according to the embodiment of the present disclosure is shown; the specific steps are as follows:
s401, acquiring current charge quantity of a lithium battery in a vehicle stationary mode, current temperature of the lithium battery and static current data of the lithium battery in a preset time period;
in the embodiment of the specification, under the stationary state of the vehicle, acquiring the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static current data of the lithium battery in a preset time period;
specifically, the static current data of the lithium battery in the preset time period may include, but is not limited to, the flow rate of the static current in each unit time in the preset time period.
S403, judging whether the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition;
in this embodiment of the present disclosure, the determining whether the current charge amount of the lithium battery, the current temperature of the lithium battery, and the electrostatic flow data satisfy a second preset condition includes:
a1, comparing the current charge quantity of the lithium battery with a preset third threshold value, comparing the current temperature of the lithium battery with a preset fourth threshold value, and comparing the static current data with a third preset condition;
specifically, whether the current charge amount of the lithium battery is smaller than a preset third threshold value or not, whether the current temperature of the lithium battery is larger than a preset fourth threshold value or not, and whether the static flow data meets a third preset condition or not can be judged;
in the illustrated embodiment, the preset third threshold may include, but is not limited to, 15%; the preset fourth threshold may include, but is not limited to, 85 ℃; the third preset condition can be that the flow of static current in each unit time is 1A in preset time;
a2, when the current temperature of the lithium battery is greater than a preset fourth threshold value, and/or the current charge amount of the lithium battery is smaller than a preset third threshold value and the static flow data meets a third preset condition, judging that the current charge amount of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition;
in this embodiment of the present disclosure, when the current temperature of the lithium battery is greater than a preset fourth threshold, or the current charge amount of the lithium battery is less than a preset third threshold and the electrostatic flow data satisfies a third preset condition, or the current charge amount of the lithium battery is less than a preset third threshold and the current temperature of the lithium battery is greater than a preset fourth threshold and the electrostatic flow data satisfies a third preset condition, it may be determined that the current charge amount of the lithium battery, the current temperature of the lithium battery, and the electrostatic flow data satisfy a second preset condition.
S405, if yes, the discharge of the lithium battery is terminated.
In the embodiment of the present disclosure, when it is determined that the current charge amount of the lithium battery, the current temperature of the lithium battery, and the electrostatic flow data satisfy a second preset condition, the disconnection device of the lithium battery may be turned on, so that the lithium battery terminates discharging; the surface lithium battery is overdischarged to influence the service life of the lithium battery.
In the embodiment of the specification, the resettable safety of the lithium battery connects the disconnected lithium battery circuit again under any one of the following conditions;
when the Lin bus starts to transmit signals or the external voltage of the lithium battery is higher than the limit value or a mechanical switch is triggered, the disconnected lithium battery line is connected; to resume normal charge and discharge.
Specifically, the external voltage of the lithium battery being higher than the limit value may be that the external voltage of the lithium battery is higher than the current voltage value of the lithium battery plus 0.2V.
As can be seen from the above embodiments of the method, the device, the electronic device and the storage medium for energy management of a lithium battery provided by the present application, the present charge amount, the preset standard charge amount and the present temperature of the lithium battery are obtained in the embodiments of the present application; determining a target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount; determining a target current of the battery according to the target charge amount and the current temperature; judging whether the current charge quantity is smaller than the first threshold value or not; if yes, charging the lithium battery according to the target current; by utilizing the technical scheme provided by the embodiment of the specification, the target current of the battery is determined according to the target charge quantity of the lithium battery, and the battery is charged or discharged by the current, so that the problem of overcharging or overdischarging of the lithium battery is avoided, the reliability of the system is improved, meanwhile, the charging voltage of the battery is limited, the service life of the battery is protected, and the service life of a whole vehicle power supply system is further prolonged.
The embodiment of the application also provides an energy management device of the lithium battery, as shown in fig. 5, which is a schematic structural diagram of the energy management device of the lithium battery provided by the embodiment of the application; specifically, the device comprises:
the information obtaining module 510 is configured to obtain a current charge amount, a preset standard charge amount, and a current temperature of the lithium battery;
the target charge amount determining module 520 is configured to determine a target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;
a target current determination module 530, configured to determine a target current of the battery according to the target charge amount and the current temperature;
a comparison module 540, configured to compare the current charge amount with a preset first threshold;
a first charging module 550, configured to charge the lithium battery according to the target current if the current charge amount is less than the first threshold;
and a first discharging module 560, configured to discharge the lithium battery according to the target current if the current charge amount is greater than the first threshold.
In this embodiment of the present specification, further includes:
the voltage acquisition module is used for acquiring the voltages at two ends of the lithium battery in the charging process in real time;
the first judging module is used for judging whether the voltage meets a first preset condition or not;
and the first processing module is used for charging the lithium battery with a preset current limit value.
In this embodiment of the present specification, further includes:
the change rate acquisition module is used for acquiring the change rate of the voltages at the two ends of the lithium battery in the charging or discharging process;
the second judging module is used for judging whether the change rate of the voltage is smaller than or equal to a preset second threshold value;
and the second processing module is used for maintaining the change rate of the voltage to charge or discharge the battery.
In the embodiment of the present disclosure, the target charge amount determining module 520 includes:
the first processing unit is used for subtracting the current charge quantity from the preset standard charge quantity to obtain a charge quantity difference value;
and the second processing unit is used for carrying out target charge quantity on the charge quantity difference lithium battery.
In this embodiment of the present specification, further includes:
the first acquisition module is used for acquiring the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static current data of the lithium battery in a preset time period in a vehicle static mode;
the third judging module is used for judging whether the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition or not;
and the third processing module is used for stopping the discharge of the lithium battery.
In an embodiment of the present disclosure, the third determining module includes:
the comparison unit is used for comparing the current charge quantity of the lithium battery with a preset third threshold value, comparing the current temperature of the lithium battery with a preset fourth threshold value and comparing the static current data with a third preset condition;
and the judging unit is used for judging that the current charge quantity of the lithium battery, the current temperature of the lithium battery and the electrostatic flow data meet a second preset condition when the current temperature of the lithium battery is greater than a preset fourth threshold value and/or the current charge quantity of the lithium battery is smaller than the preset third threshold value and the electrostatic flow data meet a third preset condition.
The embodiment of the application provides an electronic device, which comprises a processor and a memory; the processor is suitable for realizing one or more instructions; the memory stores one or more instructions adapted to be loaded and executed by the processor to implement the method for energy management of a lithium battery as described in the method embodiments above.
The memory may be used to store software programs and modules that the processor executes to perform various functional applications and data processing by executing the software programs and modules stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required for functions, and the like; the storage data area may store data created according to the use of the device, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory may also include a memory controller to provide access to the memory by the processor.
Further, fig. 6 shows a schematic hardware structure of an electronic device for implementing the method for energy management of a lithium battery provided by the embodiment of the present application, where the electronic device may participate in forming or including an apparatus or a system provided by the embodiment of the present application. As shown in fig. 6, the electronic device 1 may include one or more (shown as 102a, 102b, … …,102 n) processors 102 (the processors 102 may include, but are not limited to, a microprocessor MCU or a processing device such as a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions. In addition, the method may further include: a display, an input/output interface (I/O interface), a Universal Serial Bus (USB) port (which may be included as one of the ports of the I/O interface), a network interface, a power supply, and/or a camera. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 6 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the electronic device 1 may also include more or fewer components than shown in fig. 6, or have a different configuration than shown in fig. 6.
It should be noted that the one or more processors 102 and/or other data processing circuits described above may be referred to generally herein as "data processing circuits. The data processing circuit may be embodied in whole or in part in software, hardware, firmware, or any other combination. Furthermore, the data processing circuitry may be a single stand-alone processing module, or incorporated in whole or in part into any of the other elements in the electronic device 1. As referred to in embodiments of the application, the data processing circuit acts as a processor control (e.g., selection of the path of the variable resistor termination connected to the interface).
The memory 104 may be used to store software programs and modules of application software, and the processor 102 executes the software programs and modules stored in the memory 104 to perform various functional applications and data processing, i.e., to implement a vehicle navigation method as described above, according to the program instructions/data storage device corresponding to the method according to the embodiments of the present application. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located with respect to the processor 102, which may be connected to the electronic device 1 via a network. Examples of such networks include, but are not limited to, vehicular networks, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission means 106 is arranged to receive or transmit data via a network. The specific examples of the network described above may include a wireless network provided by a communication provider of the electronic device 1. In one example, the transmission device 106 includes a network adapter (NetworkInterfaceController, NIC) that can connect to other network devices through a base station to communicate with the internet. In one example, the transmission device 106 may be a radio frequency (RadioFrequency, RF) module for communicating wirelessly with the internet.
The display may be, for example, a touch screen type Liquid Crystal Display (LCD) which may enable a user to interact with a user interface of said electronic device 1.
Embodiments of the present application also provide a computer readable storage medium that may be disposed in an energy management terminal of a lithium battery to store at least one instruction, at least one program, a code set, or a set of instructions related to an energy management method for implementing one of the lithium battery in method embodiments, the at least one instruction, the at least one program, the code set, or the set of instructions being loadable and executable by a processor of an electronic device to implement the energy management method for a lithium battery provided by the method embodiments described above.
Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It should be noted that: the sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing description has been directed to specific embodiments of this specification. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the device and server embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and references to the parts of the description of the method embodiments are only required.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above disclosure is only a preferred embodiment of the present application, and it is needless to say that the scope of the application is not limited thereto, and therefore, the equivalent changes according to the claims of the present application still fall within the scope of the present application.
Claims (9)
1. An energy management method of a lithium battery, characterized in that: the method comprises the following steps:
acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery;
determining a charge quantity difference value between the current charge quantity and the preset standard charge quantity as a target charge quantity of the lithium battery;
determining a target current of the battery according to a relation slope between the target charge amount and the current temperature; the relation slope between the target charge amount and the current temperature is determined based on relation data between the target charge amount and the battery temperature;
comparing the current charge quantity with a preset first threshold value; the preset first threshold value comprises the preset standard charge quantity;
if the current charge quantity is smaller than the preset standard charge quantity, charging the lithium battery according to the target current;
and if the current charge quantity is larger than the preset standard charge quantity, discharging the lithium battery according to the target current.
2. The energy management method of a lithium battery according to claim 1, characterized in that: after the lithium battery is charged according to the target current, the method further comprises:
acquiring the voltages at two ends of a lithium battery in the charging process in real time;
judging whether the voltage meets a first preset condition or not;
if yes, charging the lithium battery with a preset current limit value.
3. The energy management method of a lithium battery according to claim 1, characterized in that: further comprises:
acquiring the change rate of the voltage at two ends of the lithium battery in the charging or discharging process;
judging whether the change rate of the voltage is smaller than or equal to a preset second threshold value;
if so, the battery is charged or discharged while maintaining the rate of change of the voltage.
4. The energy management method of a lithium battery according to claim 1, characterized in that: further comprises:
acquiring current charge quantity of a lithium battery in a vehicle stationary mode, current temperature of the lithium battery and static current data of the lithium battery in a preset time period;
judging whether the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition or not;
if so, the discharge of the lithium battery is terminated.
5. The energy management method of a lithium battery according to claim 4, wherein: the judging whether the current charge amount of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition comprises the following steps:
comparing the current charge amount of the lithium battery with a preset third threshold value, comparing the current temperature of the lithium battery with a preset fourth threshold value, and comparing the static current data with a third preset condition;
and when the current temperature of the lithium battery is greater than a preset fourth threshold value, and/or the current charge quantity of the lithium battery is smaller than a preset third threshold value and the static flow data meets a third preset condition, judging that the current charge quantity of the lithium battery, the current temperature of the lithium battery and the static flow data meet a second preset condition.
6. An energy management device for a lithium battery, characterized in that: the device comprises:
the information acquisition module is used for acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery;
the target charge amount determining module is used for determining the difference value between the current charge amount and the preset standard charge amount and the charge amount as the target charge amount of the lithium battery;
a target current determining module, configured to determine a target current of the battery according to a slope of a relationship between the target charge amount and the current temperature; the relation slope between the target charge amount and the current temperature is determined based on relation data between the target charge amount and the battery temperature;
the comparison module is used for comparing the current charge quantity with a preset first threshold value; the preset first threshold value comprises the preset standard charge quantity;
the first charging module is used for charging the lithium battery according to the target current when the current charge quantity is smaller than the preset standard charge quantity;
and the first discharging module is used for discharging the lithium battery according to the target current when the current charge quantity is larger than the preset standard charge quantity.
7. The energy management device for a lithium battery according to claim 6, wherein: further comprises:
the voltage acquisition module is used for acquiring the voltages at two ends of the lithium battery in the charging process in real time;
the first judging module is used for judging whether the voltage meets a first preset condition or not;
and the first processing module is used for stopping charging the lithium battery.
8. An electronic device comprising a processor and a memory, wherein the memory stores at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the method of energy management of a lithium battery of any of claims 1-5.
9. A computer-readable storage medium, characterized by: the storage medium has stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by a processor to implement the method of energy management of a lithium battery of any of claims 1-5.
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| CN112332493B (en) * | 2020-11-14 | 2023-02-28 | 湖南海博瑞德电智控制技术有限公司 | Lithium battery charging current determination method, device, equipment and storage medium |
| JP7179047B2 (en) * | 2020-12-28 | 2022-11-28 | 本田技研工業株式会社 | VEHICLE CONTROL DEVICE, VEHICLE CONTROL METHOD, AND PROGRAM |
| CN113567867A (en) * | 2021-08-02 | 2021-10-29 | 潍柴动力股份有限公司 | Battery modeling data processing method and device, storage medium and equipment |
| CN114604130B (en) * | 2022-03-21 | 2024-02-02 | 西安领充无限新能源科技有限公司 | Vehicle charging method, system, electronic device and readable storage medium |
| CN114987368B (en) * | 2022-06-23 | 2024-05-14 | 一汽解放汽车有限公司 | Control method and device for vehicle quiescent current, electronic equipment and storage medium |
| CN117277474A (en) * | 2023-08-29 | 2023-12-22 | 杭州华塑科技股份有限公司 | Battery charging distribution method, device, equipment and storage medium |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012200060A (en) * | 2011-03-18 | 2012-10-18 | Toshiba Corp | Feeding control system and feeding control method |
| CN104424396A (en) * | 2013-08-30 | 2015-03-18 | 通用汽车环球科技运作有限责任公司 | Method for predicting charging process duration |
| CN105141003A (en) * | 2015-09-25 | 2015-12-09 | 东莞新能德科技有限公司 | Battery management circuit |
| CN105958603A (en) * | 2016-07-01 | 2016-09-21 | 宁德时代新能源科技股份有限公司 | Battery charging method and device |
| CN107612075A (en) * | 2017-09-27 | 2018-01-19 | 宁德时代新能源科技股份有限公司 | Battery charging method, device, equipment and storage medium |
| CN108202609A (en) * | 2016-12-20 | 2018-06-26 | 现代自动车株式会社 | For the system and method and its vehicle of Vehicular battery management |
| CN109378884A (en) * | 2018-11-30 | 2019-02-22 | 中联重科股份有限公司 | Fault grading and interaction control system and method based on battery management system |
| CN109616712A (en) * | 2019-01-21 | 2019-04-12 | 深圳流量链科技有限公司 | A kind of control method, system and the terminal device of battery charging and discharging electric current |
| EP3471234A1 (en) * | 2017-09-27 | 2019-04-17 | Contemporary Amperex Technology Co., Limited | Method, apparatus, and device for charging a battery and storage medium |
| KR20190073151A (en) * | 2017-12-18 | 2019-06-26 | 현대자동차주식회사 | Method and system for battery charge |
| CN110112794A (en) * | 2018-02-01 | 2019-08-09 | 日立楼宇技术（广州）有限公司 | The distant prison terminal of battery cell monitoring method, apparatus, elevator, system and storage medium |
| CN110696676A (en) * | 2018-06-22 | 2020-01-17 | 北汽福田汽车股份有限公司 | Charging control method, device, terminal and vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6567582B2 (en) * | 2017-03-08 | 2019-08-28 | 株式会社東芝 | Charge / discharge control device, use condition creation device, program, and power storage system |
| JP7059761B2 (en) * | 2018-04-03 | 2022-04-26 | トヨタ自動車株式会社 | Vehicle charge / discharge control device |
-
2020
- 2020-03-18 CN CN202010192540.XA patent/CN111525631B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012200060A (en) * | 2011-03-18 | 2012-10-18 | Toshiba Corp | Feeding control system and feeding control method |
| CN104424396A (en) * | 2013-08-30 | 2015-03-18 | 通用汽车环球科技运作有限责任公司 | Method for predicting charging process duration |
| CN105141003A (en) * | 2015-09-25 | 2015-12-09 | 东莞新能德科技有限公司 | Battery management circuit |
| CN105958603A (en) * | 2016-07-01 | 2016-09-21 | 宁德时代新能源科技股份有限公司 | Battery charging method and device |
| CN108202609A (en) * | 2016-12-20 | 2018-06-26 | 现代自动车株式会社 | For the system and method and its vehicle of Vehicular battery management |
| CN107612075A (en) * | 2017-09-27 | 2018-01-19 | 宁德时代新能源科技股份有限公司 | Battery charging method, device, equipment and storage medium |
| EP3471234A1 (en) * | 2017-09-27 | 2019-04-17 | Contemporary Amperex Technology Co., Limited | Method, apparatus, and device for charging a battery and storage medium |
| KR20190073151A (en) * | 2017-12-18 | 2019-06-26 | 현대자동차주식회사 | Method and system for battery charge |
| CN110112794A (en) * | 2018-02-01 | 2019-08-09 | 日立楼宇技术（广州）有限公司 | The distant prison terminal of battery cell monitoring method, apparatus, elevator, system and storage medium |
| CN110696676A (en) * | 2018-06-22 | 2020-01-17 | 北汽福田汽车股份有限公司 | Charging control method, device, terminal and vehicle |
| CN109378884A (en) * | 2018-11-30 | 2019-02-22 | 中联重科股份有限公司 | Fault grading and interaction control system and method based on battery management system |
| CN109616712A (en) * | 2019-01-21 | 2019-04-12 | 深圳流量链科技有限公司 | A kind of control method, system and the terminal device of battery charging and discharging electric current |
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|---|---|
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