CN110299754A - A kind of solar cell system and its control method - Google Patents
A kind of solar cell system and its control method Download PDFInfo
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- CN110299754A CN110299754A CN201810247432.0A CN201810247432A CN110299754A CN 110299754 A CN110299754 A CN 110299754A CN 201810247432 A CN201810247432 A CN 201810247432A CN 110299754 A CN110299754 A CN 110299754A
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- 238000004891 communication Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
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- H02J7/0077—
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- H02J7/0091—
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of solar cell system and its control methods, belong to Vehicular battery technical field.The solar cell system, comprising: solar battery, for converting the solar into electric energy；Generation Control module, for by from the power storage of the solar battery in buffer battery；Charge control module is connected with the buffer battery, for being power battery intermittent charge using the electric power in buffer battery according to preset charged parameter and recharge logic when meeting condition；With electrical source of power manager, it is connected with the charge control module, for controlling whether the charge control module is power battery intermittent charge, and is provided as the charge parameter of power battery charging to the charge control module.The present invention using the form of upper and lower computer, is controlled, so as to realize the accurate management of charging, it is not easy to by external influence when carrying out high-voltage charging to power battery by BMS management system.
Description
Technical field
The present invention relates to a kind of Vehicular battery technical fields, particularly, are related to a kind of solar cell system and its control
Method.
Background technique
In the solar cell system of existing vehicle, generally includes solar battery, charge controller, mentioned for motor
Power battery for power and the A-battery for low-voltage load power supply.In igniting OFF signal to during igniting ON signal, it is
The charging of power battery is charged in igniting ON signal to during igniting OFF signal for A-battery.For during power battery charging,
BMS electrical source of power manager needs are active to monitor the charged state of power battery.Application No. is
201710150448.5 applying for artificial Toyota Motor Corporation rep., the invention of entitled " solar cell system " is special
Benefit application is disclosed to be controlled using the temperature that compartment summarizes, and by comparing the temperature in compartment and the parameter of setting, is filled
The management and control of electric discharge.The patent is to be incorporated by present patent application.Although this method part is solved due to temperature
Degree is led to the problem of, but is the absence of accurate management method, and control result is easy by external influence.
Summary of the invention
For the technical problems in the prior art, the invention proposes a kind of solar cell systems, comprising:
Solar battery, for converting the solar into electric energy；
Generation Control module, for by from the power storage of the solar battery in buffer battery；
Charge control module is connected with the buffer battery, for when meeting condition, according to preset charged parameter and
Recharge logic is power battery intermittent charge using the electric power in buffer battery；With
Electrical source of power manager is connected with the charge control module, for whether controlling the charge control module
For power battery intermittent charge, and it is provided as to the charge control module charge parameter of power battery charging.
In solar cell system above-mentioned, the charge control module includes:
Electricity monitoring unit, for monitoring the electricity of the buffer battery, the electricity of the buffer battery and first
The size of threshold value and second threshold；
High-voltage charging determination unit, for meeting boosting condition and the buffer battery according to scheduled boosting condition
Electricity when reaching first threshold, Xiang Suoshu electrical source of power manager sends boosting request；During power battery charging,
When the electricity of the buffer battery is less than the second threshold, Xiang Suoshu electrical source of power manager, which is sent, stops charge request；
Data receipt unit enables information for receiving the charging from the electrical source of power manager, and the charging makes
Energy information includes allowing charging instruction and corresponding charge parameter, or do not allow charging instruction；With
Recharge logic unit is power battery intermittent charge according to preset recharge logic according to the charge parameter evidence.
In solar cell system above-mentioned, the electrical source of power manager includes:
Monitoring unit, for obtaining system state data and power battery status data；
Control unit is activated, when receiving the boosting request that the charge control module is sent, the electrical source of power
Manager wakes up to state of activation from dormant state；
High-voltage charging processing unit determines the enabled letter of charging according to the system state data and power battery status data
Breath, and it is supplied to the charge control module；With
Suspend mode control unit, when receiving the stopping charge request that charge control module is sent, in the system shape
When state data and normal battery status data, the electrical source of power manager is gone into dormant state from state of activation.
In solar cell system above-mentioned, the power battery status data includes the remaining capacity or defeated of power battery
Voltage out, according to preset remaining capacity threshold value or output voltage threshold value, the power battery state includes multiple Status Levels；Institute
Stating charge parameter is multiple groups charge parameter corresponding with the Status Level.
In solar cell system above-mentioned, the boosting condition that meets includes: to receive igniting OFF signal；It is unsatisfactory for
Boosting condition includes: to receive igniting ON signal；
It is described to meet boosting condition in solar cell system above-mentioned further include: current system temperature is less than preset
Temperature threshold.
In solar cell system above-mentioned, the electricity of the electricity monitoring unit monitoring A-battery；Accordingly, described
Charge control module includes:
Low pressure charging determination unit, for according to scheduled low pressure charge condition, Xiang Suoshu recharge logic unit to send low
Press charging instruction；
The recharge logic unit is low pressure according to preset low pressure recharge logic when receiving the low pressure charging instruction
Pond charging.
In solar cell system above-mentioned, the low pressure charge condition are as follows: reach in the electricity of the buffer battery
First threshold and when meeting boosting condition, receives the charging that the electrical source of power manager is sent and enables to include not permitting in information
Perhaps charging instruction；
Alternatively, when the electricity of the buffer battery reaches first threshold and is unsatisfactory for boosting condition；
Alternatively, the electricity in the buffer battery is not up to first threshold, the electricity of the power battery reaches described
One threshold value, and it is unsatisfactory for boosting condition；
Alternatively, when the buffer battery is power battery intermittent charge.
In solar cell system above-mentioned, further includes:
Communication unit, the exchange for the data between the charge control module and the electrical source of power manager.
In solar cell system above-mentioned, further include low-voltage load drive module, be connected with the communication unit, uses
In reception external command, and according to the operation of external command control low-voltage load.
According to another aspect of the present invention, a kind of control method of solar cell system is additionally provided, comprising:
Monitor the electricity of buffer battery and power battery；
When the electricity of buffer battery reaches first threshold and meets boosting condition, sends and boost to electrical source of power manager
Request；
The electrical source of power manager determines whether to charge to power battery, can carry out to power battery in determination
When charging, power battery charging parameter is provided；
It is power battery using the electric power in buffer battery according to the power battery charging parameter and preset recharge logic
Intermittent charge.
In the control method of solar cell system above-mentioned, the electrical source of power manager determines whether to power battery
The step of being charged include:
The electrical source of power manager detection system state, when institute's system mode is normal, determination can be to power battery
It charges.
In the control method of solar cell system above-mentioned, the step of providing charge parameter, includes:
The state for detecting power battery, acquires the remaining capacity or output voltage of power battery；
The current residual electricity or output voltage and corresponding threshold value for comparing the power battery, determine current power battery
Status Level；
According to the mapping table of preset Status Level and charge parameter, charge parameter is determined.
In the control method of solar cell system above-mentioned, the remaining capacity of the power battery or the threshold of output voltage
It is multiple for being worth, and the multiple threshold value has determined multiple Status Levels.
In the control method of solar cell system above-mentioned, further includes:
When electrical source of power manager receives boosting request, state of activation is waken up to from dormant state；
In the charging process of power battery, the electricity of the buffer battery is monitored, when the electricity of the buffer battery is small
When the second threshold, Xiang Suoshu electrical source of power manager, which is sent, stops charge request；
Electrical source of power manager, which receives the power battery charging, to be stopped after requesting, and goes to dormant state from state of activation.
In the control method of solar cell system above-mentioned, the power battery charging is received in electrical source of power manager
After Stop message, further includes:
Detection system state, when system mode is normal, according to preset timing parameter timing；
Timing time then, go to dormant state from state of activation.
In the control method of solar cell system above-mentioned, the boosting condition that meets includes: to receive igniting OFF letter
Number；Being unsatisfactory for boosting condition includes: to receive igniting ON signal；
It is described to meet boosting condition in the control method of solar cell system above-mentioned further include: current system temperature
Less than preset temperature threshold.
In the control method of solar cell system above-mentioned, further includes:
Monitor the electricity of A-battery；
It is the charging of low pressure pond according to preset recharge logic when meeting scheduled low pressure charge condition.
In the control method of solar cell system above-mentioned, the low pressure charge condition are as follows: in the buffer battery
Electricity when reaching first threshold and meeting boosting condition, the electrical source of power manager does not allow to fill power battery
Electricity；Alternatively, the electricity in the buffer battery reaches first threshold and is unsatisfactory for boosting condition；Alternatively, in the buffer battery
For power battery intermittent charge；Alternatively, receiving step-down instruction；
The recharge logic of corresponding aforementioned low pressure charge condition are as follows: by buffer battery be that the A-battery charges；
The low pressure charge condition can be with are as follows:
The electricity of the buffer battery is not up to first threshold, the electricity of the power battery reaches first threshold
Value, and it is unsatisfactory for boosting condition；Or receiving step-down instruction；
The recharge logic of corresponding aforementioned low pressure charge condition are as follows: by power battery be that the A-battery charges.
In the control method of solar cell system above-mentioned, the current system temperature is by being set to the solar energy
Temperature sensor in battery system obtains；Alternatively, according to system operation time, from preset system operation time and current system
It inquires and obtains in the correspondence table for temperature of uniting.
The present invention solves the problems, such as the access of high-voltage charging mode: that is, the present invention is carrying out high-voltage charging to power battery
When, it using the form of upper and lower computer, is controlled by BMS management system, so as to realize the accurate management of charging, is not allowed
Vulnerable to external influence.
Detailed description of the invention
In the following, the preferred embodiment of the present invention will be described in more detail in conjunction with attached drawing, in which:
Fig. 1 is the functional schematic block diagram of the solar cell system according to the present invention；
Fig. 2 is the functional schematic block diagram of middle charge control module according to an embodiment of the present invention；
Fig. 3 is the functional schematic block diagram of middle electrical source of power manager according to an embodiment of the present invention；
Fig. 4 is control method flow chart according to the present invention；And
Fig. 5 is for the control process flow chart of charge control module in the present invention；
Fig. 6 is the control process flow chart of BMS in the present invention；
Fig. 7 is the functional schematic block diagram of charge control module middle according to a further embodiment of the invention；
Fig. 8 is the functional block diagram of solar cell system embodiment one of the present invention；
Fig. 9 is the functional schematic block diagram of microcomputer in embodiment one；
Figure 10 is the functional block diagram of solar cell system embodiment two of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the following detailed description, the specific embodiment for being used to illustrate the application as the application a part may refer to
Each Figure of description.In the accompanying drawings, similar appended drawing reference describes substantially similar component in different drawings.This Shen
Each specific embodiment please has carried out description detailed enough following, so that having the general of ability domain-dependent knowledge and technology
Logical technical staff can implement the technical solution of the application.It should be appreciated that can also be using other embodiments or to the application
Embodiment carry out structure, logic or electrical property change.
As shown in Figure 1, being the functional block diagram of solar cell system of the present invention.The solar cell system, packet
Include: solar battery 1, Generation Control module 2, buffer battery 20, charge control module 3 and electrical source of power manager are (referred to as
BMS) 7, wherein solar battery 1 converts the solar into electric energy.Generation Control module 2 will be from the solar battery
Power storage in buffer battery 20.The charge control module 3 is connected with the buffer battery 20, for meeting item
It is 30 intermittent charge of power battery using the electric power in buffer battery 20 according to preset charged parameter and recharge logic when part.
Whether BMS7 is connected with the charge control module 3, be that 30 interval of power battery is filled for controlling the charge control module 3
Electricity, and the charge parameter that power battery 30 charges is provided as to the charge control module 3.
Specifically, the solar battery 1 is the plate mould being made of the solar battery cell that multiple series and parallels connect
Block.Solar battery 1 is typically mounted on the area without shade on vehicle, for example, on the surface of car body top cover or sunshade.Solar-electricity
Pond 1 can export electric power (for example, maximum output 50-2000W) corresponding with solar radiation quantity.In the present invention, any type
Solar battery cell can be used as the solar battery cell in the solar battery 1 in the present invention.For example, can be with
But it is not limited to monocrystaline silicon solar cell, polysilicon solar cell, amorphous silicon thin-film solar cell, CIGS thin-film too
Positive energy battery, cadmium telluride diaphragm solar battery, gallium arsenide film solar battery, dye-sensitized solar cells or organic soft
Property solar battery etc..
Buffer battery 20 is the electrical storage device of the temporarily storage electric power generated of solar battery 1.The volume of buffer battery 20
Constant voltage can be the even higher voltage class of 12V, 24V, the buffer battery 20 such as plumbic acid, nickel-metal hydride battery and lithium ion
Battery etc..
Power battery 30 is to supply electric power, the electrical storage device with relatively high voltage to motor of vehicle.For example, dynamic
The output voltage of power battery 30 is 200V-400V pressure or 400V-700V.Power battery 30 can using as nickel-metal hydride battery or lithium from
Sub- battery etc..
In the present invention, the charge control module 3 can realize the charge control of power battery.As shown in Fig. 2, being this hair
3 functional schematic block diagram of charge control module in a bright embodiment.In the present embodiment, in order to realize from buffer battery 20 to dynamic
Voltage, currents match in 30 charging process of power battery connect the 2nd DC-DC between buffer battery 20 and power battery 30 and turn
Parallel operation 21.
The charge control module 3 includes electricity monitoring unit 301, high-voltage charging determination unit 302, data receipt unit
303 and recharge logic unit 304.Wherein, electricity monitoring unit 301 is used to monitor the electricity of the buffer battery 20, compares institute
The electricity of buffer battery 20 and the size of first threshold and second threshold are stated, and comparison result is sent to high-voltage charging and is determined
Unit 302.In the specific implementation, the data such as the electricity of each battery can be obtained using battery sensor.
It is set with boosting condition in the present system, the as condition of the charging of power battery 30, the boosting condition includes
Monitor the igniting OFF signal of system.While the car is driving, the work that power battery 30 is in as motor output electric power
State cannot be power battery charging at this time.Work as automobile flameout, i.e., when its ignition signal becomes OFF state, power battery 30 is not
It works, thus can charge again, meet boosting condition at this time.Further, the temperature value of current system can also be referred to.Point
When fiery signal is OFF, and temperature is in allowable range, that is, is not higher than preset temperature threshold, then it is assumed that meets boosting item
Part.Increase temperature condition be in order to avoid system is carrying out high-voltage charging when the temperature is excessively high, so as to cause higher system temperature,
Lead to device failure, even fire.
High-voltage charging determination unit 302 detects ignition signal to determine whether meeting boosting condition, if being referring also to
System temperature, can be obtained by the temperature sensor of setting, alternatively, according to system operation time, from preset system operation time
It is obtained with being inquired in the corresponding table of current system temperature.
The electricity that high-voltage charging determination unit 302 receives the buffer battery that the electricity monitoring unit 301 is sent reaches
The information of first threshold, and when meeting boosting condition, Xiang Suoshu BMS 7 sends boosting request.It charges in power battery 30
In the process, when the electricity that high-voltage charging determination unit 302 receives the buffer battery is less than the second threshold, Xiang Suoshu
BMS 7, which is sent, stops charge request.
Data receipt unit 303 receives the charging from the electrical source of power manager and enables information, and the charging is enabled
Information includes allowing charging instruction and corresponding charge parameter, or do not allow charging instruction.It, will when receiving allows charging instruction
Corresponding charge parameter is sent to the recharge logic unit 304, recharge logic unit 304 according to the charge parameter evidence,
It is power battery intermittent charge according to preset recharge logic.When the recharge logic includes according to needed for completing intermittent charge
Between the parameters such as parameter, voltage or electric current, send out corresponding instruction sequence to the second DC-DC converter 21.2nd DC-DC conversion
Device 21 is 30 intermittent charge of power battery according to the instruction.The single charging duration to charge every time can be equal, can also be with
Charging duration is set as gradually equal difference to successively decrease.Recharge logic unit 304 can with frame of reference temperature come modify instruction in
Charge parameter, for example, system temperature is higher, the charging duration of setting is shorter.
BMS 7 is the electronic control unit that entire vehicle integrated control is executed in electric vehicle, is collected and vehicle
Driving status, the corresponding data of state of mode of operation and various units (such as power battery and motor).As shown in figure 3,
For the function to be completed in the present invention, the BMS 7 includes but is not limited to: monitoring unit 70, activation control unit 71, high pressure
Charging process unit 72 and suspend mode control unit 73.Wherein, monitoring unit 70 obtains system state data and power battery state
Data.The system state data includes various data, such as temperature in automobile.Activation control unit 71 receive it is described
When the boosting request that charge control module 3 is sent, the BMS 7 is waken up into state of activation from dormant state, to realize
Safety monitoring when power battery 30 charges.High-voltage charging processing unit 72 is according to the system state data and power battery
Status data determines the enabled information that charges, and is supplied to the charge control module 3.Suspend mode control unit 73 is receiving charging
When the stopping charge request that control module 3 is sent, judge whether the system state data and battery status data are normal,
When the system state data and normal battery status data, the BMS 7 is gone into dormant state from state of activation.
As shown in figure 4, for according to the flow chart of control method of the present invention.Such as to the control process of battery system
Under:
Step S10 monitors the electricity of buffer battery 20 and power battery 30, only reaches foot in the electricity of buffer battery 20
Enough value when could charge to power battery 30, and, to power battery 30 carry out charging process in, for safe mesh
, it needs to be monitored the electricity of power battery.
Step S20, reaching first threshold in the electricity of buffer battery 20 (can be with for showing that the electricity of buffer battery reaches
For the electricity index of other batteries charging) and when meeting boosting condition, boosting request is sent to BMS 7.
Step S30 goes to state of activation from dormant state when the BMS 7 receives boosting request, it is determined whether to dynamic
Power battery charges, if can charge, turns to step S40, if not can be carried out charging after judgement,
Step S60 refuses to power battery charging.
Step S40 provides power battery charging parameter.
Step S50 utilizes the electric power in buffer battery 20 according to the power battery charging parameter and preset recharge logic
For 30 intermittent charge of power battery.
It include the control process of charge control module and the control process of BMS in above step, as shown in figure 5, to fill
The control process flow chart of electric control module.
Step S100 monitors the electricity of buffer battery 20.Such as the data by reception from battery sensor obtain
?.
Step S101, judges whether the electricity soc of buffer battery 20 is less than first threshold Sth1.If buffer battery 20
Electricity soc is less than first threshold Sth1, i.e., does not reach first threshold Sth1, is the charging of buffer battery 20 in step S102.
Step S103, judges whether the electricity soc of buffer battery 20 is greater than or equal to first threshold Sth1, if it is,
Stop being that buffer battery 20 charges in step S104, if it is not, then return step S100.
Step S105 judges whether to meet boosting condition, if it is satisfied, sending boosting request to BMS 7 in step S106.
It is A-battery charging in step S1051 if being unsatisfactory for boosting condition.And it determines whether to stop to low in step S1052
The charging of piezoelectric battery can be judged by acquiring the electricity of A-battery.If stopped, terminating, if do not stopped, in step
Rapid S1051 continues as A-battery charging.
Step S107, BMS 7 receives boosting request, judges whether to agree to according to present case, step S107, if together
Meaning, then return to the message of agreement.
Step S108 judges whether the message for receiving agreement, is that power battery 30 fills in step S109 if received
Electricity, if receiving dissenting message, step S1081 judges whether to need to be delayed to request again, if it is, turning to step
S106 sends boosting request；If you do not need to delay is requested again, then terminate.
Step S110 constantly monitors the electricity of buffer battery, judges buffer battery during for power battery charging
Whether 20 electricity soc is less than second threshold sth2, stops charge request if it is less, sending in step S111, in step
S112 stops charging.If the electricity soc of buffer battery 20 is greater than or equal to second threshold sth2, return step S109 continues
Power battery 30 charges.
In the side BMS, control process is as shown in Figure 6.
Step S1071 receives the boosting request that charge control module 3 is sent.
Step S1072 wakes up BMS 7 after receiving boosting request.
Step S1073, detection system state and power battery state.
Step S1074 judges whether current system problematic according to system mode, such as fault message, temperature whether mistake
It is high, if problematic, forbid charging instruction to charge control module 3 in step S1072' transmission.Again by step S1073'
It is secondary system is detected after, (i.e. according to the timing of scheduled timing time, arrived in timing in step S1075' delayed sleep
When suspend mode).If there is no problem for system, step S1075 is turned to.
Step S1075, judges whether current 30 electricity of power battery is more than or equal to threshold value 1, if it is larger than or equal to then existing
Step S1078 obtains corresponding charge parameter 1 from inquiry in the corresponding table of an electricity of system and charge parameter, returns again to
Step S1078.The present invention is by the charge parameter used when charging to power battery 30 according to power battery current residual electricity
Amount threshold value is divided into multiple Status Levels, and different conditions rank corresponds to different charge parameters.If current 30 electricity of power battery
When amount is less than threshold value 1, step S1076 is gone to.
Step S1076 continues to judge whether current 30 electricity of power battery is more than or equal to threshold value 2, if it is larger than or equal to,
Then in step S1079, corresponding charge parameter 2 is obtained from inquiry in the corresponding table of electricity and charge parameter, returns again to step
S1078.If current 30 electricity of power battery is less than threshold value 2, step S1077 is gone to.Wherein, threshold value 1 is greater than threshold value 2.
Step S1077 obtains corresponding charge parameter 3 from inquiry in the corresponding table of electricity and charge parameter.
Step S1078 allows instruction and charge parameter to the output of charge control module 3.
When step S1071' receives charging and stops request, step S1072' is gone to, transmission forbids charging instruction to control to charging
Molding block 3.
The charging to A-battery also may be implemented during processing is to power battery charging in the present invention.Low tension
Pond provides electric power for the low-voltage load in vehicle, in general, it is the battery that output voltage is 12V, such as lead battery, nickel-metal hydride battery
With lithium battery etc..Rain brush, car light in the low-voltage load such as vehicle or the various electronic control systems in vehicle,
Thus, the charge control module 3 in the present invention further includes low pressure charging determination unit 305, as shown in fig. 7,
Electricity monitoring unit 301 also monitors the electricity of A-battery, and the electricity is sent to low pressure charging determination unit 305.It is low
Pressure charging determination unit 305 obtains various data from data receipt unit 303, when meeting scheduled low pressure charge condition, to
The recharge logic unit 304 sends low pressure charging instruction.
There are many conditions to charge to A-battery 40, such as: reach first in the electricity of the buffer battery 20
Threshold value Sth1 and meet boosting condition, and receives the charging that the BMS 7 is sent and enable to include not allowing to charge to refer in information
When enabling.Or as shown in Figure 5, when the electricity of the buffer battery reaches first threshold Sth1 and is unsatisfactory for boosting condition.
Alternatively, the electricity in the buffer battery 20 is not up to first threshold Sth1 and the electricity of the power battery 30 reaches described
First threshold, and it is unsatisfactory for boosting condition, it at this moment without charging for power battery 30, thus can be low pressure by power battery 30
Battery 40 charges.Alternatively, while the buffer battery 20 is 30 intermittent charge of power battery, or A-battery 40
Charging.
In the specific implementation, above-described charge control module can be realized by a microcomputer, can be real
The function of various units in existing charge control module, composition component includes CPU, RAM, ROM and input and output terminal etc..
Microcomputer can realize control method of the present invention by executing various programs stored in ROM on CPU.
As shown in figure 8, being the functional block diagram of one embodiment of the invention.In the present embodiment, the solar battery
System includes solar battery 1A, solar-electricity sub-controller (abbreviation solar energy ECU) 2A.Wherein, the solar energy ECU2A packet
Include microcomputer 100A, the first DC-DC converter 21A, the second DC-DC converter 31A, third DC-DC converter 41A and temperature
Spend sensor 52A composition.Wherein, as shown in figure 9, being the functional block diagram of microcomputer 100A.Microcomputer 100A includes
Generation Control module 2A, for realizing Generation Control.Charge control module 3A, for the charge control of various batteries, i.e., to dynamic
The charge control of power battery, buffer battery and A-battery.Low-voltage load drive module 41A, for realizing to low-voltage load
Control.Communication unit 200A, can be according to the implementation of concrete application flexible choice communication unit 200A, such as one-to-one communication
Route, or composition In-vehicle networking carry out exchanging for data with other devices as one of communication node, to realize
Reception of the data between charge control module 3A and BMS 7A and transmission and the acquisition of various status datas, monitoring.For example, connecing
The data of shrinkage temperature sensor 52A or the message of ignition signal or BMS 7.Or to BMS 7 send boosting request message or
Stop charge request (illustrating see following below scheme) etc..
Hair in first DC-DC converter 21A connection solar battery 1A and buffer battery 20A, microcomputer 100A
Control logic, such as control logic for realizing MPPT maximum power point tracking (MPPT) control are provided in electric control module 25A.Root
According to control logic, Xiang Suoshu the first DC-DC converter 21A sends corresponding instruction.Described in first DC-DC converter 21A response
Instruction executes the MPPT control of solar panel.
The second DC-DC converter 31A connection buffer battery 20A and power battery 30A, and receive from microcomputer
Charge control module 3A instruction in calculation machine 100A, realizes the intermittent charge by buffer battery 20A to the power battery 30A,
Or the control by BMS 7A, it is A-battery 40A charging by the power battery 30A.Power battery 30A is power motor 6A
Operation provide electric power.
Third DC-DC converter 41A receives the charging instruction of charge control module 3A in microcomputer 100A, realize by
Buffer battery 20A charges to the A-battery 40A.A-battery 40A provides electric power for low-voltage load 9A.
In the present embodiment, it is multiple (to merely illustrate a battery sensor in easy figure) that battery sensor, which is 51A,
It is respectively used to detection buffer battery 20A, (electric current, temperature, fills voltage the various states of A-battery 40A and power battery 30A
Electricity condition etc.).Battery sensor 51A is by communication unit, such as One-to-one communication route and controller zone network (CAN) and too
Positive energy ECU2A communication connection.The various data that will test are sent to the microcomputer 100A in solar energy ECU2A.Temperature
The temperature is sent to microcomputer 100A for obtaining system temperature by sensor 52A.
BMS 7A is electronic control unit, is used for and the driving status of vehicle, mode of operation and various unit (such as power
Battery and motor) the corresponding entire vehicle of state integrated control, and whether control the charging of power battery 30A.
In the present embodiment, second DC-DC converter 31 can be bidirectional transducer, not only can be by buffer battery
20A is power battery 30A charging, and power battery 30A may be buffer battery 20A charging.
Some or all of in various DC-DC converters above-mentioned can be set in the outside of solar energy ECU.
It as shown in Figure 10, is the functional block diagram of the embodiment of the present invention two.In embodiment and embodiment one the difference is that,
Load drive module 41B is further comprised in the present embodiment, by driving circuit and module design, to the partial electric system of automobile
System and outer welding system are powered, and in ignition signal OFF, by long-range APP controller, the low pressure for capableing of controller car is negative
Carry the work of 91B, 92B, 93B etc..
In the present invention, in the igniting ON signal (IG-ON) from vehicle to the time for receiving igniting OFF (IG-OFF) signal
(initial treatment after IG-ON, which is specifically completed) during section executes load drive module 41A or third DC-DC converter
The operation of 41B controls, to be charged using solar panel electric power (buffer battery 20A) generated to A-battery.
It can be exported to adjust from DC-DC converter to low according to the charged state (SOC) of the A-battery inputted from battery sensor
The amount of the electric power of piezoelectric battery.
The operation of the second DC-DC converter 31A is executed during the period from the IG-OFF to IG-ON of vehicle, is utilized
Solar panel electric power (buffer battery 20A) generated carries out intermittent charge to power battery 30A and A-battery 40A
Control processing.That is, charge control module 3A executes the recharge period and stops the pulsation charging of period.To power
At the time of battery 30A is charged, BMS needs to keep state of activation, and monitors power battery.It is held to power battery
In the mode of continuous charging, since the power consumption of BMS is likely to be greater than the power generation capacity of solar panel, the present invention
BMS can reduce using intermittent charge and kept for the time of state of activation, to inhibit the power consumption of BMS, save electric power.Load
Drive module, by long-range APP controller, is capable of certain electrical works of controller car in IG-OFF.
The present invention solves the problems, such as the access of high-voltage charging mode: that is, the present invention is carrying out high-voltage charging to power battery
When, it using the form of upper and lower computer, is controlled by BMS management system, so as to realize the accurate management of charging, is not allowed
Vulnerable to external influence.
Above-described embodiment is used for illustrative purposes only, and is not limitation of the present invention, in relation to the general of technical field
Logical technical staff can also make a variety of changes and modification without departing from the present invention, therefore, all equivalent
Technical solution also should belong to scope disclosed by the invention.
Claims (21)
1. a kind of solar cell system, comprising:
Solar battery, for converting the solar into electric energy；
Generation Control module, for by from the power storage of the solar battery in buffer battery；It is characterized in that,
Further include:
Charge control module is connected with the buffer battery, for when meeting condition, according to preset charged parameter and charging
Logic is power battery intermittent charge using the electric power in buffer battery；With
Electrical source of power manager is connected with the charge control module, for controlling whether the charge control module is
Power battery intermittent charge, and it is provided as to the charge control module charge parameter of power battery charging.
2. solar cell system according to claim 1, which is characterized in that the charge control module includes:
Electricity monitoring unit, for monitoring the electricity of the buffer battery, the electricity and first threshold of the buffer battery
With the size of second threshold；
High-voltage charging determination unit is used for according to scheduled boosting condition, in the electricity for meeting boosting condition and the buffer battery
When amount reaches first threshold, Xiang Suoshu electrical source of power manager sends boosting request；During power battery charging, described
When the electricity of buffer battery is less than the second threshold, Xiang Suoshu electrical source of power manager, which is sent, stops charge request；
Data receipt unit enables information, the enabled letter of charging for receiving the charging from the electrical source of power manager
Breath includes allowing charging instruction and corresponding charge parameter, or do not allow charging instruction；With
Recharge logic unit is power battery intermittent charge according to preset recharge logic according to the charge parameter evidence.
3. solar cell system according to claim 1 or 2, which is characterized in that the electrical source of power manager includes:
Monitoring unit, for obtaining system state data and power battery status data；
Control unit is activated, when receiving the boosting request that the charge control module is sent, the electrical source of power management
Device wakes up to state of activation from dormant state；
High-voltage charging processing unit determines the enabled information that charges according to the system state data and power battery status data,
And it is supplied to the charge control module；With
Suspend mode control unit, when receiving the stopping charge request that charge control module is sent, in the system mode number
According to it is normal with battery status data when, the electrical source of power manager is gone into dormant state from state of activation.
4. solar cell system according to claim 3, which is characterized in that the power battery status data includes dynamic
The remaining capacity or output voltage of power battery, according to preset remaining capacity threshold value or output voltage threshold value, the power battery shape
State includes multiple Status Levels；The charge parameter is multiple groups charge parameter corresponding with the Status Level.
5. solar cell system according to claim 2, which is characterized in that the boosting condition that meets includes: to receive
To igniting OFF signal；Being unsatisfactory for boosting condition includes: to receive igniting ON signal.
6. solar cell system according to claim 5, which is characterized in that described to meet boosting condition further include: when
Preceding system temperature is less than preset temperature threshold.
7. solar cell system according to claim 5 or 6, which is characterized in that the electricity monitoring unit monitoring is low
The electricity of piezoelectric battery；Accordingly, the charge control module includes:
Low pressure charging determination unit, for according to scheduled low pressure charge condition, Xiang Suoshu recharge logic unit to send low pressure and fills
Electricity instruction；
The recharge logic unit is that low pressure pond is filled according to preset low pressure recharge logic when receiving the low pressure charging instruction
Electricity.
8. solar cell system according to claim 7, which is characterized in that the low pressure charge condition are as follows: in institute
When stating the electricity of buffer battery and reaching first threshold and meet boosting condition, receive that the electrical source of power manager sends fills
It include not allowing charging instruction in the enabled information of electricity；
Alternatively, when the electricity of the buffer battery reaches first threshold and is unsatisfactory for boosting condition；
Alternatively, the electricity in the buffer battery is not up to first threshold, the electricity of the power battery reaches first threshold
Value, and it is unsatisfactory for boosting condition；
Alternatively, when the buffer battery is power battery intermittent charge.
9. solar cell system according to claim 1, which is characterized in that further include:
Communication unit, the exchange for the data between the charge control module and the electrical source of power manager.
10. solar cell system according to claim 9, which is characterized in that it further include low-voltage load drive module, with
The communication unit is connected, for receiving external command, and according to the operation of external command control low-voltage load.
11. a kind of control method of solar cell system characterized by comprising
Monitor the electricity of buffer battery and power battery；
When the electricity of buffer battery reaches first threshold and meets boosting condition, boosting is sent to electrical source of power manager and is asked
It asks；
The electrical source of power manager determines whether to charge to power battery, can charge to power battery in determination
When, power battery charging parameter is provided；
It is power battery interval using the electric power in buffer battery according to the power battery charging parameter and preset recharge logic
Charging.
12. the control method of solar cell system according to claim 11, which is characterized in that the power electric source capsule
Reason device determines whether that the step of charging to power battery includes:
The electrical source of power manager detection system state, when institute's system mode is normal, determination can be carried out power battery
Charging.
13. the control method of solar cell system according to claim 11, which is characterized in that provide charge parameter
Step includes:
The state for detecting power battery, acquires the remaining capacity or output voltage of power battery；
The current residual electricity or output voltage and corresponding threshold value for comparing the power battery, determine the shape of current power battery
State rank；
According to the mapping table of preset Status Level and charge parameter, charge parameter is determined.
14. the control method of solar cell system according to claim 13, which is characterized in that the power battery
The threshold value of remaining capacity or output voltage be it is multiple, the multiple threshold value has determined multiple Status Levels.
15. the control method of solar cell system described in 3 or 14 according to claim 1, which is characterized in that further include:
When electrical source of power manager receives boosting request, state of activation is waken up to from dormant state；
In the charging process of power battery, the electricity of the buffer battery is monitored, when the electricity of the buffer battery is less than institute
When stating second threshold, Xiang Suoshu electrical source of power manager, which is sent, stops charge request；
Electrical source of power manager, which receives the power battery charging, to be stopped after requesting, and goes to dormant state from state of activation.
16. the control method of solar cell system according to claim 15, which is characterized in that in electrical source of power management
After device receives the power battery charging Stop message, further includes:
Detection system state, when system mode is normal, according to preset timing parameter timing；
Timing time then, go to dormant state from state of activation.
17. the control method of solar cell system according to claim 11, which is characterized in that the satisfaction boosting
Condition includes: to receive igniting OFF signal；Being unsatisfactory for boosting condition includes: to receive igniting ON signal.
18. the control method of solar cell system according to claim 17, which is characterized in that the satisfaction boosting item
Part further include: current system temperature is less than preset temperature threshold.
19. the control method of solar cell system described in 7 or 18 according to claim 1, which is characterized in that further include:
Monitor the electricity of A-battery；
It is the charging of low pressure pond according to preset recharge logic when meeting scheduled low pressure charge condition.
20. the control method of solar cell system according to claim 21, which is characterized in that the low pressure charging
Condition are as follows: when the electricity of the buffer battery reaches first threshold and meets boosting condition, the electrical source of power manager is not
Allow to charge to power battery；Alternatively, the electricity in the buffer battery reaches first threshold and is unsatisfactory for boosting condition；
Alternatively, being power battery intermittent charge in the buffer battery；Alternatively, receiving step-down instruction；
The recharge logic of corresponding aforementioned low pressure charge condition are as follows: by buffer battery be that the A-battery charges；
The low pressure charge condition can be with are as follows:
The electricity of the buffer battery is not up to first threshold, the electricity of the power battery reaches the first threshold, and
It is unsatisfactory for boosting condition；Or receiving step-down instruction；
The recharge logic of corresponding aforementioned low pressure charge condition are as follows: by power battery be that the A-battery charges.
21. the control method of solar cell system according to claim 18, which is characterized in that the current system temperature
Degree is obtained by the temperature sensor being set in the solar cell system；Alternatively, according to system operation time, from preset
System operation time and the corresponding table of current system temperature in inquire and obtain.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247432.0A CN110299754A (en) | 2018-03-23 | 2018-03-23 | A kind of solar cell system and its control method |
| US16/023,806 US20190296575A1 (en) | 2018-03-23 | 2018-06-29 | Solar battery system and control method thereof |
| SG10201805647R SG10201805647RA (en) | 2018-03-23 | 2018-06-29 | Solar battery system and control method thereof |
| PCT/CN2018/093600 WO2019178976A1 (en) | 2018-03-23 | 2018-06-29 | Solar battery system and control method thereof |
| EP18180929.4A EP3544144A1 (en) | 2018-03-23 | 2018-06-29 | Solar battery system and conrol method thereof |
| TW107209428U TWM574781U (en) | 2018-03-23 | 2018-07-12 | Solar cell system |
| KR1020180082391A KR20190111713A (en) | 2018-03-23 | 2018-07-16 | Solar battery system and control method thereof |
| JP2018134493A JP2019170147A (en) | 2018-03-23 | 2018-07-17 | Solar battery system and control method thereof |
| BR102018014985-7A BR102018014985A2 (en) | 2018-03-23 | 2018-07-23 | SOLAR BATTERY SYSTEM AND CONTROL METHOD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810247432.0A CN110299754A (en) | 2018-03-23 | 2018-03-23 | A kind of solar cell system and its control method |
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| Publication Number | Publication Date |
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| CN110299754A true CN110299754A (en) | 2019-10-01 |
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| CN201810247432.0A Pending CN110299754A (en) | 2018-03-23 | 2018-03-23 | A kind of solar cell system and its control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381498A (en) * | 2021-06-30 | 2021-09-10 | 奇瑞商用车（安徽）有限公司 | Power supply system and method of monitoring device of power battery of electric automobile |
| CN115503483A (en) * | 2022-08-31 | 2022-12-23 | 重庆金康赛力斯新能源汽车设计院有限公司 | Dual electricity supplementing method, device, equipment and medium for electric vehicle battery |
-
2018
- 2018-03-23 CN CN201810247432.0A patent/CN110299754A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381498A (en) * | 2021-06-30 | 2021-09-10 | 奇瑞商用车（安徽）有限公司 | Power supply system and method of monitoring device of power battery of electric automobile |
| CN113381498B (en) * | 2021-06-30 | 2024-02-06 | 奇瑞商用车（安徽）有限公司 | Power supply system and method of electric automobile power battery monitoring device |
| CN115503483A (en) * | 2022-08-31 | 2022-12-23 | 重庆金康赛力斯新能源汽车设计院有限公司 | Dual electricity supplementing method, device, equipment and medium for electric vehicle battery |
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Address after: 101400 5 Fengxiang East Street, Yang Song Town, Huairou District, Beijing. Applicant after: BEIJING HANERGY OPTOVOLTAIC TECHNOLOGY Co.,Ltd. Address before: 101400 5 Fengxiang East Street, Yang Song Town, Huairou District, Beijing. Applicant before: BEIJING HANERGY SOLAR POWER INVESTMENT Co.,Ltd. |
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Effective date of registration: 20210409 Address after: 510555 room 505, room 406, No.1, Yichuang street, Huangpu District, Guangzhou City, Guangdong Province (office only) Applicant after: Walnut energy technology (Guangzhou) Co.,Ltd. Address before: 101400 5 Fengxiang East Street, Yang Song Town, Huairou District, Beijing. Applicant before: BEIJING HANERGY OPTOVOLTAIC TECHNOLOGY Co.,Ltd. |
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Correction item: Applicant|Address Correct: Beijing Hanergy Photovoltaic Investment Co.,Ltd.|101400 No. 5 Fengxiang East Street, Yangsong Town, Huairou District, Beijing False: Walnut Energy Technology (Guangzhou) Co., Ltd.|510555, Room 505, Room 406, No.1 Yichuang Street, Huangpu District (Sino-Singapore Guangzhou Knowledge City), Guangzhou City, Guangdong Province (office only) Number: 17-02 Volume: 37 |
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