CN106786952A - Active equalization control device and method - Google Patents
Active equalization control device and method Download PDFInfo
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- CN106786952A CN106786952A CN201710005852.3A CN201710005852A CN106786952A CN 106786952 A CN106786952 A CN 106786952A CN 201710005852 A CN201710005852 A CN 201710005852A CN 106786952 A CN106786952 A CN 106786952A
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
A kind of active equalization control device and method is the embodiment of the invention provides, is related to technical field of battery management.Described device includes total control module, sampling module, electromagnetic wave sending module, electromagnetic wave receiver module and equalization control module, the total control module is electrically connected with the sampling module, electromagnetic wave sending module and equalization control module respectively, the equalization control module is electrically connected with the electromagnetic wave receiver module, the equalization control module includes the second input, and second input is used to be electrically connected with the battery pack；The battery pack includes M batteries, the equalization control module includes N number of balancing control circuit, N number of balancing control circuit is electrically connected with the total control module, N number of balancing control circuit is used to control the equilibrium of the M batteries, energy is shifted by way of using electromagnetic wave, the active equalization of battery is realized with this, simplifies circuit connection, it is with low cost.
Description
Technical field
The present invention relates to technical field of battery management, in particular to a kind of active equalization control device and method.
Background technology
Current lithium battery management system, in addition to cell voltage monitoring and management of charging and discharging function, part also carries
Equalization function.Because the voltage of single lithium battery is very low, only 3V or so.And the power voltage of electric automobile requirement then reaches
Several hectovolts are arrived.In order to meet requirement, the battery bag of nearly all electric automobile is together in series by each single lithium battery
Energy is provided.The principle of battery shows, when only each cell discharge and recharge is completely the same, can just make the performance of whole string battery
It is optimal.Because current battery production technology is difficult to make the cell of batch production to accomplish have no difference in performance parameter, institute
So that with during use, the number of times of discharge and recharge increases, and the performance difference between each cell is also increasing.Due to
" Bucket Principle ", the performance of whole string battery bag will be limited by that worst section lithium battery of performance.
Current equalizing system is broadly divided into the passive balanced and class of active equalization two.Passive equilibrium is by consuming electricity high
The electricity of cell, makes each batteries discharge and recharge trend consistent.And active equalization is then by by electricity cell high
Electricity is transferred in low battery battery, or is transferred in whole battery bag, so as to reach each cell balancing energy.Thus
It can be seen that, passive equilibrium is a kind of passive balance policy, can partly consume a part of energy content of battery.And active equalization is then one
Positive balance policy is planted, in balancing procedure, energy is that there occurs transfer, is not consumed.Although relative to passive
For equilibrium, active equalization has significant advantage, but its design too complex, causes practical application not extensive.
The content of the invention
It is an object of the invention to provide a kind of active equalization control device and method, to improve above mentioned problem.
To achieve these goals, the technical scheme that the embodiment of the present invention is taken is as follows：
In a first aspect, the embodiment of the invention provides a kind of active equalization control device, described device includes master control molding
Block, sampling module, electromagnetic wave sending module, electromagnetic wave receiver module and equalization control module.The total control module difference
Electrically connected with the sampling module, electromagnetic wave sending module and equalization control module.The equalization control module and the electricity
Magnetic wave receiver module is electrically connected.The sampling module includes first input end, and the first input end is used to be electrically connected with battery pack
Connect.The equalization control module includes the second input, and second input is used to be electrically connected with the battery pack.It is described total
Control module is used to control the electromagnetic wave sending module to send electromagnetic wave.The electromagnetic wave receiver module is used to receive the electricity
The electromagnetic wave that magnetic wave sending module sends, and the electromagnetic wave for receiving is converted into electric current and the battery is passed to
Group.The sampling module is used to gather the electric current and battery core voltage of the battery pack；The battery pack includes M batteries.It is described
Equalization control module includes N number of balancing control circuit, and N number of balancing control circuit is electrically connected with the total control module.
N number of balancing control circuit is used to control the equilibrium of the M batteries.The total control module is additionally operable to according to the sampling
The electric current and battery core voltage of each battery of module collection, judge whether the battery meets default battery balanced condition, if full
Foot, then control the balancing control circuit of the battery to open equalizer switch, to make the battery pack keep optimum Working.
In preferred embodiments of the present invention, above-mentioned M is equal to the N, and N number of balancing control circuit is used for and the M
Batteries are electrically connected one by one.
In preferred embodiments of the present invention, above-mentioned electromagnetic wave sending module includes oscillating circuit and radiating antenna.Institute
State oscillating circuit to be electrically connected with the radiating antenna, the oscillating circuit is electrically connected with the total control module.The vibration electricity
Road is used to produce oscillating current.The radiating antenna is used to launch electromagnetic wave.
In preferred embodiments of the present invention, above-mentioned oscillating circuit is sine wave oscillation circuit.
In preferred embodiments of the present invention, above-mentioned electromagnetic wave sending module also includes electromagnetic intensity sensing circuit.Institute
Electromagnetic intensity sensing circuit is stated to be electrically connected with the total control module.The electromagnetic intensity sensing circuit is used to gather described
The intensity of the electromagnetic wave that radiating antenna sends simultaneously feeds back to the total control module.
In preferred embodiments of the present invention, above-mentioned radiating antenna includes PCB copper cash or lead loop.
In preferred embodiments of the present invention, above-mentioned electromagnetic wave receiver module includes N number of electromagnetic wave receiving circuit.The N
Individual electromagnetic wave receiving circuit is electrically connected one by one with N number of balancing control circuit.Each described electromagnetic wave receiving circuit is used for will
Absorb after the electromagnetic wave that the electromagnetism sending module sends is converted to electric current, pass to and electrically connected with the electromagnetic wave receiving circuit
Battery.
In preferred embodiments of the present invention, above-mentioned sampling module includes total voltage sample circuit, total current sample circuit
And N number of battery voltage sampling circuit.One end of the total voltage sample circuit electrically connects with the total control module, described total
The other end of voltage sampling circuit is used to be electrically connected with the battery pack.One end of the total current sample circuit and the master control
Molding block is electrically connected, and the other end of the total current sample circuit is used to be electrically connected with the battery pack.N number of cell voltage
Sample circuit is used to gather the voltage of the M batteries.The total voltage sample circuit is used to gather total electricity of the battery pack
Pressure.The total current sample circuit is used to gather the total current of the battery pack.Each described battery voltage sampling circuit is used for
The voltage of the battery that collection is electrically connected with the battery voltage sampling circuit.
Second aspect, the embodiment of the invention provides a kind of active equalization control method, be applied to above-mentioned device, described
Method includes：The electric current and battery core of each battery in the battery pack that the total control module is gathered according to the sampling module
Voltage；Judge whether the battery meets default battery balanced condition, if meeting, control the balancing control circuit of the battery
Equalizer switch is opened, then controls the electromagnetic wave sending module to send electromagnetic wave；The electromagnetic wave receiver module will receive institute
The electromagnetic wave of electromagnetic wave sending module transmission is stated, and the electromagnetic wave for receiving is converted into electric current and the electricity is passed to
Pond, to make the battery pack keep optimum Working.
In preferred embodiments of the present invention, the above method also includes the total current of the battery pack for obtaining sampling module collection
With total battery core voltage, the state-of-charge of battery bag is calculated.
The embodiment of the invention provides a kind of active equalization control device and method, described device include total control module,
Sampling module, electromagnetic wave sending module, electromagnetic wave receiver module and equalization control module.The total control module respectively with institute
State the electrical connection of sampling module, electromagnetic wave sending module and equalization control module.The equalization control module and the electromagnetic wave
Receiver module is electrically connected.The sampling module includes first input end, and the first input end is used to be electrically connected with battery pack.Institute
Stating equalization control module includes the second input, and second input is used to be electrically connected with the battery pack.By using electricity
The mode of magnetic wave shifts energy, and the active equalization of battery is realized with this, simplifies circuit connection, with low cost.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of applied environment schematic diagram that can be applied to the embodiment of the present invention；
A kind of active equalization control device and its connection diagram of application that Fig. 2 is provided for first embodiment of the invention；
Balancing control circuit and battery pack in the active equalization control device that Fig. 3 is provided for first embodiment of the invention
Annexation figure；
Another active equalization control device and its connection signal of application that Fig. 4 is provided for first embodiment of the invention
Figure；
The flow chart of the active equalization control method that Fig. 5 is provided for second embodiment of the invention.
In figure：100- devices；110- total control modules；120- sampling modules；130- electromagnetic wave sending modules；132- vibrates
Circuit；134- radiating antennas；136- electromagnetic intensity sensing circuits；140- electromagnetic wave receiver modules；150- equalization control modules；
The balancing control circuits of 151- first；The batteries of 201- first；200- battery packs；300- terminals.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Present invention implementation generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, it is necessary to illustrate, term " first ", " second " etc. are only used for distinguishing description, without
It is understood that to indicate or implying relative importance.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
In recent years, the production and selling of new-energy automobile, especially pure electric automobile has taken shape gradually.The weight of State-level
It is that pure electric automobile manufacturing enterprise and sale enterprise are provided very depending on, the constantly improve of standard and the continuous maturation of technology
Good development environment.Current most electric automobile is using poly-lithium battery as energy storage units, and lithium battery
There is the characteristic that can not be overcharged with over-discharge, once overcharge and cross put, it will cause very serious consequence.So, it is several
On all of pure electric automobile, the management system of lithium battery will be equipped with, to monitor cell voltage, manage charging and discharging
Process.
Lithium battery management system also carries equalization function.Mainly include active equalization and passive equilibrium.It is equal relative to passive
For weighing apparatus, active equalization has significant advantage.But the circuit design of existing active equalization method is all very complicated.Actively equal
In weighing apparatus, if using man-to-man energy transfer mode, then be required for energy pathway between each cell, so will
Can greatly increase the wiring quantity in battery bag, increase the difficulty of control design case.But also technique when can increase vehicle production
Complexity, the reliability for increasing vehicle weight, reducing battery bag.If using one-to-many energy transfer mode, can also face
Above mentioned problem, and also need to design step-up/step-down circuit.
Because the absolute voltage of each energy unit is inconsistent, when active equalization circuit is designed, also to carry out mutually
Between isolation, which defining energy transfer can only be carried out by the way of electric field or electromagnetic coupled.Either Electric Field Mode
Or, all there is energy and provide transferring path with the component that range attenuation is too fast and needs are special in the mode of electromagnetic coupled
Weakness, which in turns increases design difficulty, reduces the reliability of product, increased the cost of product.This is also actively equal
Weighing apparatus cannot largely obtain the reason for applying.
In consideration of it, a kind of active equalization control device and method is the embodiment of the invention provides, by using electromagnetic wave
Mode shifts energy, and the active equalization of battery is realized with this, simplifies circuit connection, with low cost.
Fig. 1 is refer to, Fig. 1 shows a kind of applied environment schematic diagram that can be applied to the embodiment of the present invention.Such as Fig. 1 institutes
Show, active equalization control device 100 is electrically connected with battery pack 200, the battery pack 200 is electrically connected with terminal 300.A kind of situation
Under, terminal 300 can include load terminal.Active equalization control device 100 is electrically connected with battery pack 200, the battery pack 200
Electrically connected with load terminal.Now battery pack 200 is in discharge process, and battery pack 200 charges for load terminal, active equalization control
Device processed 100 is used to manage the discharge scenario of battery pack 200.Wherein, the load terminal can include：PC(personal
Computer) computer, panel computer, mobile phone, electronic reader, notebook computer, intelligent television, Set Top Box, car-mounted terminal etc.
Terminal device.The load terminal can also include power motor, and the power motor can be used for electric automobile.
In another case, terminal 300 can include charging module, active equalization control device 100 and the electricity of battery pack 200
Connection, the battery pack 200 is electrically connected with charging module.Now charging module charges for battery pack 200, and battery pack 200 is in
Charging process, active equalization control device 100 is used to manage the charge condition of battery pack 200.Wherein, charging module can include
Charger.
First embodiment
Fig. 2 is refer to, a kind of active equalization control device 100 is the embodiment of the invention provides, it includes total control module
110th, sampling module 120, electromagnetic wave sending module 130, electromagnetic wave receiver module 140 and equalization control module 150.It is described total
Control module 110 is electrically connected with the sampling module 120, electromagnetic wave sending module 130 and equalization control module 150 respectively.
The equalization control module 150 is electrically connected with the electromagnetic wave receiver module 140.The total control module 110 is used to control institute
State electromagnetic wave sending module 130 and send electromagnetic wave.The total control module 110 can include processor, memory, storage control
Device.Directly or indirectly electrically connected between each element of memory, storage control, processor, to realize the transmission or friendship of data
Mutually.For example, between these elements electrical connection can be realized by one or more communication bus or signal bus.Memory can be with
Store various software programs and module, the corresponding programmed instruction of active equalization control method that such as the embodiment of the present application is provided/
Module.
Processor by running storage software program in memory and module so that perform various function application with
And data processing, that is, realize the active equalization control method in the embodiment of the present application.
Memory can include but is not limited to random access memory (Random Access Memory, RAM), read-only to deposit
Reservoir (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory,
PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electric erasable
Read-only storage (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Processor can be a kind of IC chip, with signal handling capacity.Above-mentioned processor can be general place
Reason device, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network
Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), application specific integrated circuit (ASIC), ready-made programmable
Gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hardware components.It can
To realize or perform the disclosed each method in the embodiment of the present application, step and logic diagram.General processor can be micro-
Processor or the processor can also be any conventional processors etc..
The sampling module 120 includes first input end, and the first input end is used to be electrically connected with battery pack 200.Institute
Sampling module 120 is stated for gathering the electric current and battery core voltage of the battery pack 200.The battery pack 200 includes M batteries.
The sampling module 120 can include total voltage sample circuit, total current sample circuit and N number of battery voltage sampling circuit.
One end of the total voltage sample circuit electrically connects with the total control module 110, the other end of the total voltage sample circuit
For being electrically connected with the battery pack 200.The total voltage sample circuit is used to gather the total voltage of the battery pack 200.Institute
The one end for stating total current sample circuit is electrically connected with the total control module 110, and the other end of the total current sample circuit is used
Electrically connected in the battery pack 200.The total current sample circuit is used to gather the total current of the battery pack 200.The N
Individual battery voltage sampling circuit is used to gather the voltage of the M batteries.
The battery pack 200 can be the series connection of M batteries.N can be more than or equal to M..The value of N, M can be according to reality
Occasion needs to be selected.For example, N=M=48.Battery can include lithium ion battery.
Preferably, N is equal to M, and N number of battery voltage sampling circuit is used to be electrically connected one by one with the M batteries.It is
Say, N number of battery voltage sampling circuit is used to be electrically connected one by one with the N batteries.Per batteries to should have and with the electricity
One battery voltage sampling circuit of pond electrical connection.Each described battery voltage sampling circuit is used to gather to be adopted with the cell voltage
The voltage of the battery of sample circuit electrical connection.
The electromagnetic wave sending module 130 is used to send electromagnetic wave.Fig. 3 is refer to, the electromagnetic wave sending module 130 is wrapped
Oscillating circuit 132 and radiating antenna 134 are included, the oscillating circuit 132 is electrically connected with the radiating antenna 134, the vibration
Circuit 132 is electrically connected with the total control module 110.Wherein, the oscillating circuit 132 is used to produce oscillating current, the spoke
Antenna 134 is penetrated for launching electromagnetic wave.In the present embodiment, the oscillating circuit 132 is sine wave oscillation circuit.Sine wave shakes
Swinging circuit can include sine-wave oscillator.
In order to send the electromagnetic wave of preset strength, the electromagnetic wave sending module 130 can also be passed including electromagnetic intensity
Inductive circuit 136.The preset strength can include default frequency, power and direction.The electromagnetic intensity sensing circuit 136
Electrically connected with the total control module 110, the electromagnetic intensity sensing circuit 136 is sent out for gathering the radiating antenna 134
The frequency of the electromagnetic wave for sending, power simultaneously feed back to the total control module 110.The total control module 110 is controlled by treatment
Make the oscillating circuit 132 and produce electric current so that radiating antenna 134 launches the electromagnetic wave of preset strength.Electromagnetic intensity is sensed
Circuit 136 can include electromagnetic sensor.
Preferably, the radiating antenna 134 can include PCB copper cash or lead loop.The lead loop can be electricity
Intrinsic plain conductor in pond group 200.
The electromagnetic wave receiver module 140 is used to receive the electromagnetic wave that the electromagnetic wave sending module 130 sends, and will
The electromagnetic wave for receiving is converted to electric current and passes to the battery pack 200.
The equalization control module 150 includes the second input, and second input is used for and the electricity of the battery pack 200
Connection.The equalization control module 150 can include N number of balancing control circuit.Each described balancing control circuit includes equilibrium
Switch.One end of N number of balancing control circuit electrically connects with the total control module 110, and the other end is used to be economized on electricity with the M
Pond electrically connects one by one.Wherein, N can be more than or equal to M.Preferably, N is equal to M.Fig. 4 is refer to, the battery pack 200 can be M
Batteries are connected.One end of each balancing control circuit electrically connects with the total control module 110, each described balanced control
The other end of circuit processed is electrically connected with a batteries.For example, the equalization control module 150 includes the first balancing control circuit
151, the battery pack 200 includes the first battery 201.One end of first balancing control circuit 151 and the total control module 110
Electrical connection, the other end is electrically connected with first battery 201.
Further, the electromagnetic wave receiver module 140 includes N number of electromagnetic wave receiving circuit.N number of electromagnetic wave is received
Circuit is electrically connected one by one with N number of balancing control circuit.And N number of balancing control circuit is used for and the N batteries
Electrically connect one by one.It is, per batteries to that should have and an electromagnetic wave receiving circuit being electrically connected with the battery.Each described electricity
After magnetic wave receiving circuit is used to for the electromagnetic wave that the absorbed electromagnetic wave sending module 130 sends to be converted to electric current, pass to
The battery electrically connected with the electromagnetic wave receiving circuit.Preferably, the intrinsic frequency of electromagnetic wave receiving circuit is with the electromagnetism that receives
When the frequency of ripple is identical, the oscillating current produced in electromagnetic wave ripple receiving circuit is most strong, referred to as electric resonance.Preferably, electromagnetic wave
Form between sending module 130 and each battery ripple receiving circuit by resonating transmits energy.
The total control module 110 is additionally operable to the electric current and battery core electricity of each battery gathered according to the sampling module 120
Pressure, judges whether the battery meets default battery balanced condition, if meeting, controls the balancing control circuit of the battery to beat
Equalizer switch is driven, to make the battery pack 200 keep optimum Working.Optimum Working is the current value of each battery in electricity
Within stream predetermined threshold value；Voltage difference between each battery is within voltage difference predetermined threshold value.The default battery balanced condition
At least include in following condition：The current value of collection battery is not within electric current predetermined threshold value；Gather between each battery
Voltage difference not within voltage difference predetermined threshold value.Wherein, electric current predetermined threshold value, voltage difference predetermined threshold value can be according to actual feelings
Condition sets.
Additionally, the absorption efficiency in order to improve electromagnetic wave in battery pack 200, the battery pack 200 is wrapped with sheath, institute
Stating the inner surface setting of sheath has projection or scribbles reflection of electromagnetic wave layer.The inner surface setting of the sheath has projection, Ji Jiangsuo
Stating the inner surface of sheath can be processed into using the shape of reflection of electromagnetic wave.In this way, the electromagnetic wave not received once can be in electricity
The internal reflection of pond group 200 carries out secondary reception or repeatedly receives, and improves electro-magnetic wave absorption efficiency.
The operation principle of active equalization control device 100 provided in an embodiment of the present invention is as follows：
The total control module 110 obtains the electricity of each battery in the battery pack 200 of the collection of the sampling module 120
Stream and battery core voltage；Judge whether the battery meets default battery balanced condition, if meeting, the total control module
110 control the balancing control circuit of the battery to open equalizer switch, then control the electromagnetic wave sending module 130 to send electromagnetism
Ripple；The electromagnetic wave receiver module 140 receives the electromagnetic wave that the electromagnetic wave sending module 130 sends, and by the reception
To electromagnetic wave be converted to electric current and pass to the battery, so as to make the battery pack 200 keep optimum Working.By using
The mode of electromagnetic wave shifts energy, and the active equalization of battery is realized with this, simplifies circuit connection, with low cost.Eliminate tradition
Plain conductor connection, while battery bag weight can be mitigated, reduce production technology link.Because being connected without wire, also not
Can there are short-circuit risks, improve overall security.
A kind of active equalization control device 100 is the embodiment of the invention provides, described device 100 includes total control module
110th, sampling module 120, electromagnetic wave sending module 130, electromagnetic wave receiver module 140 and equalization control module 150.It is described total
Control module 110 is electrically connected with the sampling module 120, electromagnetic wave sending module 130 and equalization control module 150 respectively.
The equalization control module 150 is electrically connected with the electromagnetic wave receiver module 140.The sampling module 120 includes the first input
End, the first input end is used to be electrically connected with battery pack 200.The equalization control module 150 includes the second input, described
Second input is used to be electrically connected with the battery pack 200.Energy is shifted by way of using electromagnetic wave, battery is realized with this
Active equalization, simplify circuit connection, it is with low cost.
Second embodiment
Fig. 5 is refer to, a kind of active equalization control method is the embodiment of the invention provides, above-mentioned active equalization is applied to
Control device 100, methods described includes：
Step S400：The total control module obtains the electricity of each battery in the battery pack of the sampling module collection
Stream and battery core voltage；
Step S410：Judge whether the battery meets default battery balanced condition；
Specifically, the default battery balanced condition at least includes in following condition：Sampling module 120 is gathered
The current value of battery is not within electric current predetermined threshold value；Sampling module 120 gathers voltage difference between each battery not in voltage difference
Within predetermined threshold value.Wherein, electric current predetermined threshold value, voltage difference predetermined threshold value can set according to actual conditions.
Step S420：If meeting, the total control module controls the balancing control circuit of the battery to open equalizer switch,
Then the electromagnetic wave sending module is controlled to send electromagnetic wave；
Step S430：The electromagnetic wave receiver module receives the electromagnetic wave that the electromagnetic wave sending module sends, and will
The electromagnetic wave for receiving is converted to electric current and passes to the battery, to make the battery pack 200 keep optimum Working.
Methods described can also include：Obtain the total current and total battery core electricity of the battery pack 200 of the collection of sampling module 120
Pressure, is calculated the state-of-charge of battery bag.
State-of-charge (State of Charge, SOC) is also dump energy, representative be battery using a period of time or
The ratio of the capacity of residual capacity and its fully charged state after lying idle for a long time, conventional percentage is represented.
As a kind of implementation method, by the total current and total electricity that obtain the battery pack 200 at multiple interval Millisecond moment
Core voltage, further according to coulomb method of counting, is calculated the state-of-charge of battery bag.
Methods described can also include：After equilibrium being reached according to each battery, the total current of the acquisition collection of sampling module 120,
The electric current and voltage of total voltage, each battery, calculate equalization efficiency.
Active equalization control method provided in an embodiment of the present invention, the total control module 110 obtains the sampling module
The electric current and battery core voltage of each battery in the battery pack 200 of 120 collections；Judge whether the battery meets default electricity
Pond equilibrium condition, if meeting, the total control module 110 controls the balancing control circuit of the battery to open equalizer switch, so
After control the electromagnetic wave sending module 130 to send electromagnetic wave；The electromagnetic wave receiver module 140 receives the electromagnetic wave and sends
The electromagnetic wave that module 130 sends, and the electromagnetic wave for receiving is converted into electric current and the battery is passed to, to make this
Battery pack 200 keeps optimum Working.Energy is shifted by way of using electromagnetic wave, realizes that the active of battery is equal with this
Weighing apparatus, simplifies circuit connection, with low cost.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the method for foregoing description
Specific work process, may be referred to the corresponding process in aforementioned means embodiment, will not be repeated here.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of active equalization control device, it is characterised in that described device includes total control module, sampling module, electromagnetic wave
Sending module, electromagnetic wave receiver module and equalization control module, the total control module respectively with the sampling module, electromagnetism
Ripple sending module and equalization control module are electrically connected, and the equalization control module is electrically connected with the electromagnetic wave receiver module,
The sampling module includes first input end, and the first input end is used to be electrically connected with battery pack, the equalization control module
Including the second input, second input is used to be electrically connected with the battery pack；The total control module is used to control institute
State electromagnetic wave sending module and send electromagnetic wave, the electromagnetic wave receiver module is used to receive what the electromagnetic wave sending module sent
Electromagnetic wave, and the electromagnetic wave for receiving is converted into electric current and the battery pack is passed to, the sampling module is used for
Gather the electric current and battery core voltage of the battery pack；
The battery pack includes M batteries, and the equalization control module includes N number of balancing control circuit, N number of Balance route
Circuit is electrically connected with the total control module, and N number of balancing control circuit is used to control the equilibrium of the M batteries, institute
Electric current and battery core voltage that total control module is additionally operable to each battery according to sampling module collection are stated, judges that the battery is
It is no to meet default battery balanced condition, if meeting, control the balancing control circuit of the battery to open equalizer switch, to make
The battery pack keeps optimum Working.
2. device according to claim 1, it is characterised in that the M is equal to the N, N number of balancing control circuit is used
Electrically connected one by one in the M batteries.
3. device according to claim 1, it is characterised in that the electromagnetic wave sending module includes oscillating circuit and spoke
Antenna is penetrated, the oscillating circuit is electrically connected with the radiating antenna, and the oscillating circuit is electrically connected with the total control module, institute
Oscillating circuit is stated for producing oscillating current, the radiating antenna is for launching electromagnetic wave.
4. device according to claim 3, it is characterised in that the oscillating circuit is sine wave oscillation circuit.
5. device according to claim 3, it is characterised in that the electromagnetic wave sending module is also passed including electromagnetic intensity
Inductive circuit, the electromagnetic intensity sensing circuit is electrically connected with the total control module, and the electromagnetic intensity sensing circuit is used
The intensity of the electromagnetic wave sent in the collection radiating antenna simultaneously feeds back to the total control module.
6. device according to claim 3, it is characterised in that the radiating antenna includes PCB copper cash or lead loop.
7. device according to claim 1, it is characterised in that the electromagnetic wave receiver module includes that N number of electromagnetic wave is received
Circuit, N number of electromagnetic wave receiving circuit is electrically connected one by one with N number of balancing control circuit, and each described electromagnetic wave is received
After circuit is used to for the electromagnetic wave that the absorbed electromagnetic wave sending module sends to be converted to electric current, passes to and connect with the electromagnetic wave
Receive the battery of circuit electrical connection.
8. device according to claim 1, it is characterised in that the sampling module includes total voltage sample circuit, total electricity
Stream sample circuit and N number of battery voltage sampling circuit, one end and the total control module electricity of the total voltage sample circuit
Connection, the other end of the total voltage sample circuit is used to be electrically connected with the battery pack, and the one of the total current sample circuit
End electrically connects with the total control module, and the other end of the total current sample circuit is used to be electrically connected with the battery pack, institute
State N number of battery voltage sampling circuit is used to gather described for gathering the voltage of the M batteries, the total voltage sample circuit
The total voltage of battery pack, the total current sample circuit is used to gather the total current of the battery pack, each described cell voltage
Sample circuit is used to gather the voltage of the battery electrically connected with the battery voltage sampling circuit.
9. a kind of active equalization control method, it is characterised in that be applied to the device as described in claim any one of 1-8, institute
The method of stating includes：
The total control module obtains the electric current and battery core voltage of each battery in the battery pack of the sampling module collection；
Judge whether the battery meets default battery balanced condition, if meeting, the total control module controls the battery
Balancing control circuit open equalizer switch, then control the electromagnetic wave sending module to send electromagnetic wave；
The electromagnetic wave receiver module receives the electromagnetic wave that the electromagnetic wave sending module sends, and by the electricity for receiving
Magnetic wave is converted to electric current and passes to the battery, to make the battery pack keep optimum Working.
10. method according to claim 9, it is characterised in that methods described also includes：
The total current and total battery core voltage of the battery pack of sampling module collection are obtained, the state-of-charge of battery bag is calculated.
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