CN110416640A - Combination power battery charge/discharge control method, system and automobile - Google Patents
Combination power battery charge/discharge control method, system and automobile Download PDFInfo
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- CN110416640A CN110416640A CN201910645581.7A CN201910645581A CN110416640A CN 110416640 A CN110416640 A CN 110416640A CN 201910645581 A CN201910645581 A CN 201910645581A CN 110416640 A CN110416640 A CN 110416640A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/443—Methods for charging or discharging in response to temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of combination power battery charge/discharge control method, system and automobile, is related to power battery field, wherein combination power battery charge/discharge control method, comprising: obtain the temperature information of the first battery of combination power battery；When the temperature information of first battery is lower than the first temperature threshold, the second battery discharge for controlling the combination power battery heats first battery；When the temperature information of first battery is not less than second temperature threshold value, control charges to first battery.The present invention charges under environment in low temperature, first pass through the second battery by the first battery be heated to be suitble to charging operations temperature after, again the first battery is implemented to charge, capable of overcoming the first battery, charging performance is unstable at low ambient temperatures, is easy to happen the defect of safety accident.
Description
Technical field
The present invention relates to power battery field more particularly to a kind of combination power battery charge/discharge control method, system and
Automobile.
Background technique
As the imbalance between supply and demand problem between national oil shortage of resources and the growing trip requirements of people highlights, newly
Energy automobile is continued to develop.Critical component of the power battery as new-energy automobile, energy density directly affect vehicle
Pure electricity course continuation mileage, the territorial scope that Low-Temperature Reliability directly affects the cold-starting of vehicle and vehicle uses.
Lithium ion battery is the power battery type that new-energy automobile generallys use.Although lithium ion battery has average
Voltage is high, and energy density is high, and storage life is long (up to 10 years), the good advantage of high-temperature behavior and be widely used, but it is pacified
Full performance is poor, and it is the obstacle of its development that low temperature charging performance is unstable etc..
As it can be seen that the lithium ion battery charging performance existed in the prior art under low temperature environment in power battery is more unstable
Defect.
Summary of the invention
Technical problems to be solved of the embodiment of the present invention are to provide a kind of combination power battery charge/discharge control method, system
And automobile, to solve the unstable defect of lithium ion battery charging performance under low temperature environment in power battery.
In order to solve the above technical problems, combination power battery charge/discharge control method provided in an embodiment of the present invention, comprising:
Obtain the temperature information of the first battery of combination power battery；
When the temperature information of first battery is lower than the first temperature threshold, the second of the combination power battery is controlled
Battery discharge heats first battery；
When the temperature information of first battery is not less than second temperature threshold value, control charges to first battery.
Optionally, after the temperature information of first battery for obtaining combination power battery, the method also includes such as
It is at least one of lower:
When the temperature information of first battery is lower than the first temperature threshold, control stops filling first battery
Electricity；
When the temperature information of first battery is not less than second temperature threshold value, and second battery is in discharge condition
When, it controls second battery and stops electric discharge.
Optionally, first temperature threshold is less than or equal to the second temperature threshold value.
Optionally, first battery is lithium ion battery, and second battery is lead-acid battery.
The embodiment of the invention also provides a kind of combination power battery charge-discharge control systems, comprising:
Battery management system BMS, the temperature information of the first battery for obtaining combination power battery；
Discharge current controller, for controlling institute when the temperature information of first battery is lower than the first temperature threshold
The second battery discharge for stating combination power battery heats first battery；
Charging current controller, for controlling when the temperature information of first battery is not less than second temperature threshold value
It charges to first battery.
Optionally, further include at least one of following:
Charging current controller is also used to the control when the temperature information of first battery is lower than the first temperature threshold
Stop charging to first battery；
Discharge current controller is also used to be not less than second temperature threshold value, and institute when the temperature information of first battery
When stating the second battery and being in discharge condition, controls second battery and stop electric discharge.
Optionally, first temperature threshold is less than or equal to the second temperature threshold value.
Optionally, first battery is lithium ion battery, and second battery is lead-acid battery.
Optionally, the combination power battery further include:
Temperature control panel, the temperature control panel are at least used to install first battery；
Liquid cooling pipe, the liquid cooling pipe are mounted on the temperature control panel；
Wherein, second battery at least by heating the liquid cooling pipe and can carry out heat using the temperature control panel
The mode of conduction heats first battery.
The embodiment of the invention also provides a kind of automobiles, including combinations of the above power battery charge-discharge control system.
The embodiment of the invention also provides a kind of computer readable storage medium, deposited on the computer readable storage medium
Computer program is contained, combinations of the above power battery charging/discharging thereof is realized when the computer program is executed by processor
Step.
The embodiment of the present invention can charge under environment in low temperature, first pass through the second battery and be heated to being suitble to fill by the first battery
After electrically operated temperature, then the first battery is implemented to charge, the steady of the first battery charging performance at low ambient temperatures can be improved
It is qualitative, reduce the generation of safety accident.Further, since the second battery can at any time heat the first battery by electric discharge,
It can be improved so at low ambient temperatures to the versatility of the second battery charging.
Detailed description of the invention
Fig. 1 is a kind of combination power battery charge/discharge control method flow chart in the embodiment of the present invention；
Fig. 2 is another combination power battery charge/discharge control method flow chart in the embodiment of the present invention；
Fig. 3 is one concrete application flow chart of combination power battery charge/discharge control method；
Fig. 4 is another concrete application flow chart of combination power battery charge/discharge control method；
Fig. 5 is combination power battery charge-discharge control system structural schematic diagram in the embodiment of the present invention；
Fig. 6 is vehicle structure schematic diagram in the embodiment of the present invention；
Fig. 7 is combination power battery structural schematic diagram in the embodiment of the present invention.
It is shown in figure:
310 liquid cooling pipe 440 of charging current controller
320 support construction 450 of discharge current controller
330 cabinet 460 of battery management system
331 charge port 510 of lithium ion BMS analytical unit
332 ECU part 520 of plumbic acid BMS analytical unit
First battery, 410 electrical appliance 530
Second battery, 420 electric drive mobile devices 540
Temperature control panel 430
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
As shown in Figure 1, the embodiment of the invention provides a kind of combination power battery charge/discharge control methods, comprising:
Step S100: the temperature information of the first battery of combination power battery is obtained；
Wherein, first battery can be lithium ion battery.The temperature information of first battery is preferably to the first electricity
The characterization of pond own temperature, in the case where combination power battery is stood for a long time, the temperature information of the first battery is also possible to
To the characterization of combination power battery local environment temperature.
Step S201: when the temperature information of first battery is lower than the first temperature threshold, the assembly power is controlled
Second battery discharge of battery heats first battery；
For example, be suitable for carrying out the temperature of charging operations generally at 5 DEG C or more for lithium ion battery, first temperature
Threshold value can be 5 DEG C or less arbitrary values, such as 5 DEG C, 0 DEG C etc..Second battery can be lead-acid battery, be also possible to low temperature lithium battery
Deng only need to having preferable discharge performance at low ambient temperatures, heating of the realization to the first battery.
Step S202: it when the temperature information of first battery is not less than second temperature threshold value, controls to described first
Battery charging.
Second temperature threshold value can choose to be suitable for the arbitrary value within the temperature range of the first battery charges, to guarantee first
Battery has good charging performance after being heated；Meanwhile second temperature threshold value is also unsuitable excessively high, and excessive power is avoided to be wasted in
To in the heating of the first battery；Such as it is 5 DEG C, 10 DEG C etc. that second temperature threshold value, which can choose,.First temperature threshold and the second temperature
The size relation of degree threshold value will be discussed in detail below.
Specifically, in the embodiment of the present invention, combination power battery includes the first battery and the second battery.It charges in low temperature
Under environment, first pass through the second battery by the first battery be heated to be suitble to charging operations temperature after, then to the first battery implementation fill
Electricity, capable of overcoming the first battery, charging performance is unstable at low ambient temperatures, is easy to happen the defect of safety accident.
Further, since the second battery can at any time heat the first battery by electric discharge, can be improved in this way low
To the versatility of the second battery charging under warm environment.For example, when being charged using charging pile to combination power battery, or
When hybrid vehicle charges to combination power battery using generator, the above charge/discharge control method can be used, without
According to different charging scenes, more jacket heating systems are set.
As shown in Fig. 2, said combination power battery charge/discharge control method further includes following at least one in the present embodiment
:
Step S111: when the temperature information of first battery is lower than the first temperature threshold, control stops to described the
The charging of one battery；
When the temperature of the first battery is lower than the first temperature threshold, the charging current to the first battery is cut off, prevents first
Safety accident occurs battery for charging damage battery, setting at low ambient temperatures.For example, when the first battery is lithium ion battery, In
Temperature charges in the case where being lower than 0 DEG C, and lithium ion may have little time to be embedded in graphite cathode, to be precipitated in negative terminal surface shape
At metal Li dendrite, this reaction, which can consume in battery, with the lithium ion of repeated charge and battery capacity is greatly reduced,
The metal Li dendrite of precipitation may also can pierce through diaphragm, to influence security performance.
Step S112: when the temperature information of first battery is not less than second temperature threshold value, and at second battery
When discharge condition, controls second battery and stop electric discharge.
When the temperature of the first battery is higher than second temperature threshold value, the first battery has been in safe charging temperature environment
In, the second battery heats the first battery without continuing electric discharge at this time, to save electricity.Optionally, the second battery herein stops
It only discharges, refers to stopping the discharge process for heating the first battery, when other electrical equipments need electricity consumption, the
Two batteries can continue to discharge；Further, it is suitable for the temperature discharged that the first battery is also at this time, is there is remaining capacity
In the case of, it can also discharge.
Optionally, combination power battery charge/discharge control method further includes at least one of following:
When the temperature information of first battery is lower than preset first temperature threshold, and the first battery is in discharge condition
When, it controls first battery and stops electric discharge；
First battery, such as lithium ion battery, discharge performance is also poor at low ambient temperatures, and can make to battery itself
It is lower than preset first temperature threshold at damage, therefore in the temperature information of the first battery, stops the discharge process of the first battery.
When the temperature information of first battery is lower than preset first temperature threshold, second battery is filled in control
Electricity.
Under low temperature environment, the second battery is started to charge when accessing charge power supply, on the one hand, can shorten the second battery
Charging time, on the other hand, the second battery itself electricity may be lower, can supplement electricity to guarantee to the first battery
Heating process.
Above-mentioned first temperature threshold is less than or equal to above-mentioned second temperature threshold value.
Specifically, in one alternate embodiment, the first temperature threshold is equal to second temperature threshold value, for example, the first temperature
Threshold value and second temperature threshold value are disposed as 5 DEG C, and control program logic employed in the present embodiment is simple, fast response time.
In another alternative embodiment, the first temperature threshold is less than second temperature threshold value, and the second battery is only first
The temperature of battery can just discharge when being lower than the first temperature threshold heats the first battery, until the temperature of the first battery is not low
Stop electric discharge when second temperature threshold value to heat the first battery, i.e., if the second battery is not presently within electric discharge to the first battery
The state of heating, when the temperature of the first battery is not less than the first temperature threshold, the second battery can't heat the first battery；
If the second battery is currently in the state that heat to the first battery of electric discharge, the temperature of the first battery in the first temperature threshold and
Between second temperature threshold value, the second battery will continue to electric discharge to the heating of the first battery until the first battery temperature is not less than the second temperature
Spend threshold value.
For example, the first temperature threshold is set as 0 DEG C, second temperature threshold value is set as 5 DEG C.It is right when accessing charging system
The initial temperature signal of first battery is obtained；
If the initial temperature characterization of the first battery is that current first battery temperature is -2 DEG C, the second battery discharge is enabled
First battery is heated, when the temperature of the first battery reaches 5 DEG C, the second battery stops heating the first battery, the
One battery starts to charge.If detecting that the temperature of the first battery drops below 0 DEG C during charging, then standing
Stop charging to the first battery, and the second battery discharge is enabled to heat the first battery, if in charging process, the first battery
Temperature then keeps the state to charge to the first battery always at 0 DEG C or more.
If the initial temperature characterization of the first battery is that current first battery temperature is 2 DEG C, illustrate the first battery at this time
It has been in the temperature range for being relatively more suitable for charging, can have been plugged in the case where not heating.The mistake of charging
Charge and discharge logical AND above content is identical in journey.
If the initial temperature characterization of the first battery is that current first battery temperature is 10 DEG C, illustrate the first battery at this time
In being suitable for the normal working temperature range for carrying out charge and discharge, directly charge to the first battery.
Specifically, the above process is achieved by the steps of: when the temperature information of first battery is not less than pre-
If the first temperature threshold, and be lower than preset second temperature threshold value when, control the second battery keep present discharge heating or not
Put electrically heated state；Or the temperature information of the first battery is not responded.The advantage of two different temperatures threshold values is set
It is, avoiding changing near single temperature threshold due to temperature causes the second battery in electric discharge heating and two kinds of heating of not discharging
It is waved under state.
On the basis of the above embodiments, in the present embodiment, above-mentioned first battery is lithium ion battery, above-mentioned second battery
For lead-acid battery.Although there is a big difference compared with lithium ion battery in battery capacity for lead-acid battery, its low-temperature stability
Can be good, it can be consequently used at low ambient temperatures heating lithium ion battery by electric discharge.By lead-acid battery and lithium ion
Battery is combined use, and battery energy density on the one hand can be improved, the low-temperature stability that on the other hand can be greatly improved.
Optionally, for being equipped with the automobile of the structure heated using charging system to combination power battery, In
In the case where meeting the condition that it is heated using charging system, directly the first battery can also be carried out using charging system
Heating；And in the case where the condition for being unsatisfactory for being heated using charging system, using the second battery discharge to the first battery
It is heated.
One concrete application process of the combination power battery charge/discharge control method of the embodiment of the present invention is illustrated below
It is as follows.
Assuming that the first battery is lithium ion battery, the second battery is lead-acid battery, and the first temperature threshold is 0 DEG C, the second temperature
Spending threshold value is 5 DEG C.Referring to shown in Fig. 3, this concrete application process includes:
Step S0: charge request signal is obtained；
Step S1: the temperature information of lithium ion battery is obtained；
Step S2: when the temperature of temperature information characterization lithium ion battery is lower than 0 DEG C, lead-acid battery is enabled to charge on one side
It discharges on one side and lithium ion battery is heated, do not charge with season lithium ion battery and also do not discharge；
Step S3: when the temperature of temperature information characterization lithium ion battery is not less than 5 DEG C, lead-acid battery charging is enabled simultaneously
Stop electric discharge heating lithium ion battery, not discharge with season lithium ion battery charging.
Step S4: after lithium ion battery and lead-acid battery electricity are full of or receive charging interrupt signal, stop filling
Electricity.
In addition, as shown in figure 4, in another concrete application process citing of the above method, it is assumed that the first temperature threshold and the
Two temperature thresholds are equal and are 5 DEG C, and the application flow is similar to the application flow in a upper citing, and details are not described herein again.
As shown in figure 5, the embodiments of the present invention also provide a kind of combination power battery charge-discharge control systems, comprising:
Battery management system BMS (i.e. battery management system 330), for obtaining the first battery 410 of combination power battery
Temperature information；
Discharge current controller 320, for when the temperature information of first battery 410 be lower than the first temperature threshold when,
First battery 410 is heated in the second battery 420 electric discharge for controlling the combination power battery；
Charging current controller 310 is not less than second temperature threshold value for the temperature information when first battery 410
When, control charges to first battery 410.
Combination power battery charge-discharge control system in the embodiment of the present invention charges under environment in low temperature, first passes through control
Make the second battery 420 electric discharge by the first battery 410 be heated to be suitble to charging operations temperature after, then to the first battery 410 implement
Charging, capable of overcoming the first battery 410, charging performance is unstable at low ambient temperatures, is easy to happen the defect of safety accident.This
Outside, due to simultaneously including the first battery 410 and the second battery 420 in combination power battery, the second battery 420 theoretically can be with
When the first battery 410 heated by electric discharge, the extreme enrichment suitable environment of above system.
Optionally, combination power battery charge-discharge control system further includes at least one of following:
Charging current controller 310 is also used to the temperature information when first battery 410 lower than the first temperature threshold
When, control stops charging to first battery 410；
Discharge current controller 320 is also used to the temperature information when first battery 410 not less than second temperature threshold
Value, and when second battery 420 be in discharge condition, it controls second battery 420 and stops discharging.
Discharge current controller 320 is also used to the temperature information when first battery 410 lower than preset first temperature
Threshold value, and when the first battery 410 is in discharge condition, it controls first battery 410 and stops electric discharge；
Charging current controller 310 is also used to the temperature information when first battery 410 lower than preset first temperature
When threshold value, control charges to second battery 420.
Optionally, first temperature threshold is less than or equal to the second temperature threshold value.
Optionally, first battery 410 is lithium ion battery, and second battery 420 is lead-acid battery.
It should be noted that the combination power battery charge-discharge control system is automatically controlled with said combination power battery charge and discharge
The corresponding system of method processed, wherein in above method embodiment all implementations suitable for the embodiment of the system,
Also it can reach same technical effect.
Still optionally further, the BMS includes lithium ion BMS analytical unit 331 and plumbic acid BMS analytical unit 332, described
Lithium ion BMS analytical unit 331, the plumbic acid BMS analytical unit 332 be respectively used to obtain lithium ion battery monitoring data,
The monitoring data of lead-acid battery；The monitoring data include temperature signal etc..
As shown in fig. 7, in the embodiment of the present invention, said combination power battery further include:
Temperature control panel 430, the temperature control panel 430 is at least for installing first battery 410；
Liquid cooling pipe 440, the liquid cooling pipe 440 are mounted on the temperature control panel 430；
Wherein, second battery 420 at least can be by heating the liquid cooling pipe 440 and utilizing the temperature control panel
430 carry out the mode of heat transfer, heat to first battery 410.
In said combination power battery, 430 one side of temperature control panel can play the work of the support to the first battery 410
With on the other hand, moreover it can be used to be heated to the first battery 410 being mounted thereon, eliminate heating film, reduce into
This.
Optionally, the temperature control panel 430 is also used to install the second battery 420.Optionally, multiple temperature controls are provided with
Making sheet 430, multiple temperature control panels 430 constitute layered structures and are simultaneously connected with each other by support construction 450, the first battery 410, the
In the installation to the temperature control panel 430 of two batteries 420, in addition, being additionally provided with temperature sensor on temperature control panel 430.It is logical
Cross above structure, be so that the first battery 410 and the second battery 420 carry out temperature adjusting using Integral temperature control panel 430,
On the one hand play the role of supporting fixed battery modules, on the other hand be obtained by the monitoring to temperature in temperature control panel 430
The temperature of battery modules, and then the conveniently adjusting to battery modules temperature.Still optionally further, the combination power battery and group
It closes power battery charge-discharge control system to be integrated into the cabinet 460 of a setting, forms combined type power Battery case, be applicable in
Property, stability, good economy performance, have vast potential for future development.
The embodiment of the invention also provides a kind of automobiles, including combinations of the above power battery charge-discharge control system.This
In embodiment, above-mentioned automobile further includes charge port 510, combination power battery, electrical equipment and ECU part 520.As shown in fig. 6,
Charge port 510, combination power battery, electrical equipment are sequentially connected, and the BMS of combination power battery charge-discharge control system is installed on
The monitoring data, such as battery temperature information etc. of battery are obtained on combination power battery, ECU part 520 is then at least for carrying out
Electric current distribution.
The combination power battery includes the first battery 410 and the second battery 420.In an alternative embodiment, BMS is also used
In the electricity for the electricity and the second battery 420 for obtaining the first battery 410, ECU part 520 is used for according to first battery 410
The electricity of electricity and second battery 420, to the charging current of first battery 410 and filling for second battery 420
Electric current is allocated, to guarantee that 410 electricity of the first battery is balanced with 420 electricity of the second battery.In another alternative embodiment
In, the electrical equipment includes electrical appliance 530 and electric drive mobile devices 540, and ECU part 520 is also used to control combination power electric
Distribution of the pond to the output electric current of electrical appliance 530 and electric drive mobile devices 540.
The embodiment of the invention also provides a kind of computer readable storage medium, deposited on the computer readable storage medium
Computer program is contained, combinations of the above power battery charging/discharging thereof is realized when the computer program is executed by processor
Step.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of combination power battery charge/discharge control method characterized by comprising
Obtain the temperature information of the first battery of combination power battery；
When the temperature information of first battery is lower than the first temperature threshold, the second battery of the combination power battery is controlled
First battery is heated in electric discharge；
When the temperature information of first battery is not less than second temperature threshold value, control charges to first battery.
2. the method according to claim 1, wherein the temperature of first battery for obtaining combination power battery
After information, the method also includes at least one of following:
When the temperature information of first battery is lower than the first temperature threshold, control stops charging to first battery；
When the temperature information of first battery is not less than second temperature threshold value, and second battery is in discharge condition,
It controls second battery and stops electric discharge.
3. method according to claim 1 or 2, which is characterized in that first temperature threshold is less than or equal to described the
Two temperature thresholds.
4. described second is electric the method according to claim 1, wherein first battery is lithium ion battery
Pond is lead-acid battery.
5. a kind of combination power battery charge-discharge control system characterized by comprising
Battery management system BMS, the temperature information of the first battery for obtaining combination power battery；
Discharge current controller, for controlling described group when the temperature information of first battery is lower than the first temperature threshold
The second battery discharge for closing power battery heats first battery；
Charging current controller, for controlling to institute when the temperature information of first battery is not less than second temperature threshold value
State the charging of the first battery.
6. system according to claim 5, which is characterized in that further include at least one of following:
Charging current controller is also used to when the temperature information of first battery is lower than the first temperature threshold, and control stops
It charges to first battery；
Discharge current controller is also used to temperature information when first battery not less than second temperature threshold value, and described the
When two batteries are in discharge condition, control second battery and stop electric discharge.
7. system according to claim 5 or 6, which is characterized in that first temperature threshold is less than or equal to described the
Two temperature thresholds.
8. system according to claim 5, which is characterized in that first battery is lithium ion battery, second electricity
Pond is lead-acid battery.
9. system according to claim 5, which is characterized in that the combination power battery further include:
Temperature control panel, the temperature control panel are at least used to install first battery；
Liquid cooling pipe, the liquid cooling pipe are mounted on the temperature control panel；
Wherein, second battery at least by heating the liquid cooling pipe and can carry out heat transfer using the temperature control panel
Mode, first battery is heated.
10. a kind of automobile, which is characterized in that including the combination power battery charge and discharge as described in any one of claim 5 to 9
Control system.
11. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, the computer program realize combination power battery according to any one of claims 1 to 4 when being executed by processor
The step of charging/discharging thereof.
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Application publication date: 20191105 |