CN106911152A - Wireless charging balance system and wireless charging balance method - Google Patents
Wireless charging balance system and wireless charging balance method Download PDFInfo
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- CN106911152A CN106911152A CN201510979108.4A CN201510979108A CN106911152A CN 106911152 A CN106911152 A CN 106911152A CN 201510979108 A CN201510979108 A CN 201510979108A CN 106911152 A CN106911152 A CN 106911152A
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- wireless charging
- battery
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- 238000007600 charging Methods 0.000 title claims abstract description 309
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000005611 electricity Effects 0.000 claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 claims description 34
- 238000004891 communication Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 235000012364 Peperomia pellucida Nutrition 0.000 description 2
- 240000007711 Peperomia pellucida Species 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 1
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- H02J7/0021—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of wireless charging balance system and wireless charging balance method, by a battery management system to detect the battery electric quantity of multiple battery modules, wireless charging balance system includes an electric power source, a wireless charging conveyer and multiple wireless charging receivers.Wireless charging conveyer is used for for the first electric energy being converted to a radio energy, and transmits radio energy to each wireless charging receiver.Each wireless charging receiver is electrically connected with one of corresponding the multiple battery module, and radio energy is converted into a pair of the second electric energy of charging battery module.Wherein, when the multiple battery module is in charged state, wireless charging receiver slows down battery module of the converting electrical energy to electricity high, and wireless charging receiver increases battery module of the converting electrical energy to low battery.
Description
Technical field
The present invention relates to a kind of wireless charging balance system and wireless charging balance method, more particularly to close
In the wireless charging balance system and its balance method of the battery module of multi-quantity series/parallel.
Background technology
Battery equilibrium technology the series-parallel application field of multi-quantity it is fairly widespread with it is important.Because of battery mould
Number of blocks is more, so these battery modules produce unbalanced chance just to become big.Especially in electric motor car and
It is present that energy-storage system becomes increasingly popular.Wherein, existing active balancing technology needs complexity mostly
Circuit connection, and controlled including many switches.
In the series-parallel application field of multi-quantity, such as electronic bus system, energy storage cabinet or passenger car
All multisystems, these battery modules occupy quite huge space.Therefore, in the series-parallel system of multi-quantity
In system, the voltage of each string is drawn by electric wire, self-assembling formation is many and the wiring of complexity.Wherein, electricity
Line is a unreliable and risk element high in battery system, often because electric wire designs bad or electric wire
Broken skin produces example that is short-circuit and triggering catching fire or damage.Additionally, existing active balancing circuit is big
Many purposes that balance is reached by complicated wiring, the active balancing electricity designed to increase battery efficiency
Road, often increased the power line of many and produces other safe risks, cause to use upper puzzlement.
The content of the invention
The invention discloses a kind of wireless charging balance system and its balance method, by wireless charging technology
So that multiple battery modules are carried out with a point string balance, the ease of use of wireless charging balance system is lifted whereby.
The present invention discloses a kind of wireless charging balance system, by battery management system detecting multiple batteries
The battery electric quantity of module.Wireless charging balance system includes electric power source, wireless charging conveyer and multiple nothings
Line charging receiver.Electric power source is used for providing the first electric energy.Wireless charging conveyer is electrically connected with electric power source,
Wireless charging conveyer is used for for the first electric energy being converted to radio energy, and transmits radio energy.It is each wireless
Charging receiver is electrically connected with one of corresponding the multiple battery module, each wireless charging receiver
For receiving radio energy, and radio energy is converted into the second electric energy, each second electric energy is used for corresponding
Charging battery module；Wherein, when the multiple battery module is in charged state, battery management system
Control under the overall leadership is received with one of the multiple battery module of electricity high or some corresponding wireless chargings
Device, with slow down converting electrical energy to one of the multiple battery module of electricity high or some, cell tube
One of the management and control of reason system and the multiple battery module of low battery or some corresponding wireless chargings connect
Receive device, with increase converting electrical energy to one of the multiple battery module of low battery or some.
The present invention discloses a kind of wireless charging balance system, by battery management system detecting multiple batteries
The battery electric quantity of module, wireless charging balance system includes：Electric power source, multiple wireless charging conveyer and
Multiple wireless charging receivers.Electric power source is used for providing the first electric energy；Multiple wireless charging conveyer difference
Electric power source is electrically connected with, each wireless charging conveyer is used for for the first electric energy being converted to a radio energy, and
Transmit the multiple radio energy.Each wireless charging receiver is electrically connected with corresponding the multiple battery mould
One of block, each wireless charging receiver is used for receiving corresponding radio energy, and will be wireless accordingly
Electric energy is converted to the second electric energy, and each second electric energy is used for corresponding charging battery module；Wherein, in institute
When stating multiple battery modules and being in charged state, the multiple electricity of battery management system management and control and electricity high
One of pond module or some corresponding wireless charging receivers, to slow down converting electrical energy to electricity high
One of the multiple battery module or some, battery management system management and control is the multiple with low battery
One of battery module or some corresponding wireless charging receivers, to increase converting electrical energy to low battery
One of the multiple battery module or some.
The present invention discloses a kind of wireless charging balance method, it is adaptable to a wireless charging balance system.Wirelessly
Charge balance system passes through battery management system to detect the battery electric quantity of multiple battery modules, wireless charging
Balance system includes electric power source, wireless charging conveyer and multiple wireless charging receivers.Wireless charging fax
Device is sent to be electrically connected with electric power source, each wireless charging receiver is electrically connected with corresponding the multiple battery module
One of them, method includes：Wireless charging conveyer is used for for the first electric energy being converted to radio energy, and
Transmission radio energy gives each wireless charging receiver；Each wireless charging receiver is used for receiving radio energy,
And radio energy is converted into the second electric energy, each second electric energy is used for corresponding charging battery module；
When the multiple battery module is in charged state, battery management system management and control is the multiple with electricity high
One of battery module or some corresponding wireless charging receivers, to slow down converting electrical energy to electricity high
One of the multiple battery module or some；Battery management system management and control is described more with low battery
One of individual battery module or some corresponding wireless charging receivers, to increase converting electrical energy to low electricity
One of the multiple battery module of amount or some.
Specific means of the invention is using a kind of wireless charging balance system, by each battery module of correspondence
Wireless receiver design so that multi-string battery module reaches the active balancing of battery capacity, and reduce
The wiring complexity of existing active balancing technology and limitation, lift making for wireless charging balance system whereby
Use convenience.
General introduction above and ensuing implementation method, are for further illustrating technology hand of the invention
Section with reach effect, but the implementation method for being described only provides reference explanation use with accompanying drawing, is not used for
To the present invention person of being any limitation as.
Brief description of the drawings
Fig. 1 is the schematic diagram of the wireless charging balance system of one embodiment of the present invention.
Fig. 2 is the function side of the wireless charging balance system of the another embodiment of the present invention according to Fig. 1
Block schematic diagram.
Fig. 3 A are the chargings of the multiple battery module of the another embodiment of the present invention according to Fig. 1
Electricity schematic diagram.
Fig. 3 B are the discharge electricity amount schematic diagrames of the multiple battery module of another embodiment of the present invention.
Fig. 4 is the schematic diagram of the wireless charging balance system of another embodiment of the present invention.
Fig. 5 is the schematic diagram of the wireless charging balance system of another embodiment of the present invention.
Fig. 6 is the flow of the balance method of the wireless charging balance system of another embodiment of the present invention
Figure.
Wherein, description of reference numerals is as follows：
1、1a：Wireless charging balance system
TX1、TX2、TX3、TX4、TX5、TX1a：Wireless charging conveyer
T1、T2：First modular converter
T11：Direct current-direct current conversion unit
T13、T23：DC-AC conversion unit
T21：AC-DC converting unit
T3：Transmission coil
T5：First control module
T7：First communication module
RX1、RX2、RX3、RX4、RX5：Wireless charging receiver
R1：Second modular converter
R11：Direct current-direct current conversion unit
R13：Rectification unit
R3：Receiving coil
R5：Second control module
R7：Second communication module
RS：Switch
P1：Electric power source
B1、B2、B3、B4、B5：Battery module
S601~S607：Process step
Specific embodiment
Fig. 1 is the schematic diagram of the wireless charging balance system of one embodiment of the present invention.Refer to Fig. 1.
Fig. 1 illustrates a wireless charging conveyer TX1 and five wireless charging receiver RX1~RX5.In order to
Convenient explanation, the quantity of wireless charging receiver RX1~RX5 is illustrated with five.In other embodiment party
In formula, the quantity of wireless charging receiver is, for example, two, three or more.Present embodiment is not limited
The quantity of wireless charging receiver RX1~RX5.
In fact, wireless charging conveyer TX1 is electrically connected with electric power source P1.Wireless charging conveyer TX1
The electric energy of electric power source P1 is converted into radio energy, and exports radio energy and connect to the multiple wireless charging
Receive device RX1~RX5.Each wireless charging receiver RX1~RX5 is electrically connected with corresponding the multiple electricity
One of pond module B1~B5.And the multiple battery module B1~B5 is in series connection.Also
It is to say, the configuration relation of wireless charging receiver RX1~RX5 and battery module B1~B5 is one-to-one
Configuration relation, as depicted in Fig. 1.
Specifically, each battery module B1~B5 includes multiple in parallel, series connection and connects or go here and there
Battery in parallel.Battery is, for example, lithium-manganese cell, iron lithium phosphate battery, cobalt nickel manganese cell, plumbic acid
Battery or other batteries.Present embodiment does not limit the implementation method of battery module B1~B5.In addition,
Electric power source P1 is, for example, dc source or AC power.Wherein, dc source by solar generator,
Mobile generator, battery, wind-driven generator or other dc sources etc. are realized.AC power is by handing over
Civil power or inverter is flowed to realize.Present embodiment does not limit the implementation method of electric power source P1.
Then, each wireless charging receiver RX1~RX5 receives radio energy, and radio energy is turned
It is changed to the electric energy charged to battery module B1~B5.That is, wireless charging receiver RX1~RX5
Battery module B1~B5 will be charged.Assuming that one of the multiple battery module B1~B5 is (such as electricity
Pond module B2) when first reaching charging saturation state, corresponding wireless charging receiver RX2 will stop changing
Electric energy gives battery module B2, and other wireless charging receiver RX1, RX3~RX5 are still persistently changed
Electric energy, and corresponding battery module B1, B3~B5 are charged, the multiple battery module is reached whereby
The active balancing of the battery capacity of B1~B5.
In simple terms, the imbalance of the multiple battery module B1~B5 of series connection will cause battery to hold
Amount cannot efficient release and energy storage.Furthermore, existing active balance method must be by complicated electricity
The switch control of road wiring and complexity, to reach the balance of battery capacity.However, present embodiment is logical
The technological means of wireless charging is crossed, is controlled with the switch of the circuit connection and complexity that reduce complexity, whereby
Reach the active balancing of the battery capacity of the multiple battery module B1~B5.
Next, further illustrating thin portion element and the running of wireless charging balance system 1.
Fig. 2 is the function side of the wireless charging balance system of the another embodiment of the present invention according to Fig. 1
Block schematic diagram.Refer to Fig. 2.For convenience of explanation, the electric power source P1 of present embodiment is dc source.
Wherein, present embodiment with a wireless charging conveyer TX1 to a wireless charging receiver RX1
Running illustrate.Those skilled in the art should push away according to the technical spirit of present embodiment
Know the running of remaining wireless charging receiver RX2~RX5.
Furthermore, it is understood that wireless charging conveyer TX1 includes one first modular converter T1, a transmission coil
T3, one first control module T5 and one first communication module T7.In fact, the first modular converter T1
It is electrically connected with electric power source P1, transmission coil T3 and the first control module T5.First communication module T7 electricity
Property connection the first control module T5.First modular converter T1 for example passes through direct current-direct current conversion unit T11
And DC-AC conversion unit T13 is realized.Wherein, DC-AC conversion unit T13 is electrically connected with
Direct current-direct current conversion unit T11 and transmission coil T3.First control module T5 is electrically connected with direct current-friendship
Stream-converting unit T13 or direct current-direct current conversion unit T11.
Wireless charging receiver RX1 includes a receiving coil R3, one second modular converter R1, a battery
Module B1, one second control module R5 and one second communication module R7.In fact, the second modular converter
R1 is electrically connected with receiving coil R3, battery module B1 and the second control module R5.Second communication module
R7 is electrically connected with the second control module R5.Second modular converter R1 is including a rectification unit R13 and always
Stream-DC conversion unit R11.Wherein, rectification unit R13 is electrically connected with receiving coil R3, direct current-straight
Stream-converting unit R11 and the second control module R5.Direct current-direct current conversion unit R11 is electrically connected with rectification
Unit R 13, the second control module R5 and battery module B1.
Furthermore, it is understood that transmission coil T3 and receiving coil R3 is for example by induction mode or resonance mode,
To reach the running of electric energy wireless transmission.Wherein induction type wireless charging can provide closely and low power
Using.Resonant wireless charging can provide the application of remote and middle power.And first and second communication mould
Block T7, R7 for example pass through bluetooth communication, radio-frequency communication, WiFi communication or other communication modes, to enter
Row data transfer, exchange or communication operation.First and second control module T5, R5 for example passes through respectively
Processor, microprocessor, the control circuit of semiconductor electronic component, process circuit or decision circuitry are come real
It is existing.Present embodiment do not limit transmission coil T3, receiving coil R3, first and second communication module T7,
The implementation method of R7, first and second control module T5, R5.
In addition, direct current-direct current conversion unit T11, R11 for example by DC converting circuit, booster circuit,
Reduction voltage circuit, step-up/step-down circuit, excess voltage protection, circuit overcurrent protection and other circuits its
One of or combination realize.DC-AC conversion unit T13 is for example by inverter circuit, exchange conversion
One of circuit, excess voltage protection, circuit overcurrent protection and other circuits or combination come real
It is existing.And rectification unit R13 is for example realized by bridge circuit, half bridge circuit or other circuits.This
Implementation method does not limit direct current-direct current conversion unit T11, R11, DC-AC conversion unit T13 and whole
Flow the implementation method of unit R 13.
For example, electric power source P1 is used for providing one first electric energy.First electric energy is direct current energy.Wirelessly
Charging conveyer TX1 is used for receiving direct current energy, and direct current energy is converted into a radio energy.Wirelessly
Charging conveyer TX1 transmission radio energies give wireless charging receiver RX1.Wireless charging receiver RX1
Radio energy is received, and radio energy is converted into one second electric energy.Second electric energy is to battery module B1
The direct current energy of charging.
Fig. 1 is referred to, when the multiple battery module B1~B5 is in charged state, battery management system
Control wireless charging receiver RX1~RX5 corresponding with the battery module B1~B5 of electricity high under the overall leadership, subtracts
Battery module B1~B5 of the slow converting electrical energy to electricity high；Battery management system management and control and the battery of low battery
The corresponding wireless charging receiver RX1~RX5 of module B1~B5, to increase converting electrical energy to low battery
Battery module B1~B5.
It is compared to each other by the electricity of the multiple battery module B1~B5, to draw electricity high and low battery.
Such as five electricity of battery module are respectively 90%, 100%, 70%, 60% and 80% electricity.Its
In, 90%, 100%, 70% and 80% electricity is relative in the multiple battery module B1~B5
Electricity higher.Wherein, 100% electricity has reached saturation electricity.And 60% electricity is the multiple
Relatively low electricity in battery module B1~B5.Certainly, battery management system can be obtained and compared
The electricity of the multiple battery module B1~B5, with obtain the multiple battery module B1 of electricity high~
One of B5 or some, and low battery one of the multiple battery module B1~B5 or
A bit.Furthermore, it is understood that battery management system is produced according to the electricity of the multiple battery module B1~B5
One of one first management and control signal and one second management and control signal or combination.Wireless charging conveyer TX1
Radio energy is transmitted according to the first management and control signal, each wireless charging receiver RX1~RX5 is managed according to second
Whether control signal deciding receives radio energy from wireless charging conveyer TX1.
Additionally, each wireless charging receiver RX1~RX5 has an identification feature, and the first management and control signal
Including at least one identification feature.The identification feature of wireless charging conveyer TX1 the first management and control signals of foundation,
To transmit wireless charging receiver RX1~RX5 of the radio energy to corresponding identification feature.Each wireless charging
Receiver RX1~RX5 further includes a switch RS, and the second management and control signal includes that at least one knows
Other feature, the identification feature of each wireless charging receiver RX1~RX5 the second management and control signals of foundation, to lead
Lead to or end each switch RS.
Identification feature be, for example, indicate the identifier of each battery module B1~B5, identification chip, sim cards,
RFID or other identification datas.Therefore, battery management system passes through identification feature to distinguish each battery mould
Block B1~B5.So, battery management system can management and control wireless charging conveyer TX1 transmission radio energies
One of the multiple battery module B1~B5 to many series connection or some, reach whereby described many
The active balancing of the battery capacity of individual battery module B1~B5.
It is noted that when the multiple battery module B1~B5 is in discharge condition, it is described many
One of individual battery module B1~B5 electric discharges reach a low battery default value, battery management system management and control
Electric discharge reaches the battery module B1~B5 of low battery default value, causes corresponding wireless charging receiver
Battery module B1~B5 that RX1~RX5 converting electrical energies reach low battery default value to electric discharge charges.
That is, the battery module B1~B5 of battery management system management and control low battery stops release electric energy, and right
Battery module B1~B5 the electric energy supplements of low battery.
Additionally, battery management system sends balancing information to wireless charging by communication transmitting
Device TX1 and wireless charging receiver RX1~RX5, wherein balancing information content include identification feature confirm,
Power confirms and electric energy transmission starts confirmation etc. of ceasing and desisting order；Or battery management system by UART,
The entity communication interface such as CAN, SPI, RS485, wireless charging conveyer TX1 is given by balancing information,
Wherein wireless charging conveyer TX1 receives the communication information to be balanced to be begun transmission electric energy, and wireless charging
Receiver RX1~RX5 then passively receives radio energy；Or use a plurality of entity I/O connecting line conducts
The control line of wireless charging conveyer TX1 and wireless charging receiver RX1~RX5, and the multiple reality
Body I/O connecting lines be electrically connected with wireless charging conveyer TX1 and each wireless charging receiver RX1~
RX5。
Furthermore, it is understood that the management and control mode of battery management system then can at any time be carried out in discharge and recharge.For example,
In other embodiments, management and control strategy is：When battery pack is charged, battery management system detection
Climbing speed to some string battery modules B1~B5 is too fast or other string numbers of voltage ratio are high, then battery
Management system is issued to active balancing order to the battery module B1~B5 compared with low battery string.Wherein, to compared with
The power source of the battery module B1~B5 of low battery string can be an external auxiliary power supply, or charge
Device or by battery pack (Battery Pack) provide so that other string numbers battery module B1~B5 also can be simultaneously
Reach and fill full condition.
On the other hand, when the multiple battery module B1~B5 is discharged, battery management system inspection
Measure the fall off rate or voltage ratio of some battery modules B1~B5 other string numbers low, then battery management system
System assigns active balancing order, is charged with to these battery modules B1~B5, until battery module
B1~B5 balances reach release conditions simultaneously.Present embodiment does not limit the reality of wireless charging balance system 1
Apply mode.
Fig. 3 A are the chargings of the multiple battery module of the another embodiment of the present invention according to Fig. 1
Electricity schematic diagram.Refer to Fig. 3 A.The multiple battery module B1~B5 depicted in Fig. 3 A is figure
The multiple battery module B1~B5 in 1.The multiple battery module B1~B5 charges and reaches respectively
To electricity 90%, 100%, 70%, 60% and 80% (SOC, State of Charge, i.e. " rechargeable battery
Capacity ").Wherein, battery module B2 has reached charging saturation state.Therefore, the wireless charging in Fig. 1
Contactor between electric receiver RX2 and battery module B2 will cause wireless charging in cut-off state
Electric receiver RX2 stops converting electrical energy and gives battery module B2.That is, wireless charging receiver RX2
Stop charging battery module B2.
Additionally, present embodiment will slow down the charge rate of electricity battery module B1, B5 higher, with
And the charge rate of lifting electricity relatively low battery module B3, B4.In fact, battery management system will
The information transfers such as the charge capacity of the multiple battery module B1~B5 are to wireless charging conveyer TX1's
The second control module R5 of the first control module T5 or wireless charging receiver RX1~RX5.Wherein,
The second control module R5 of wireless charging receiver RX1, RX5 controls the conversion of the second modular converter R1
Efficiency, for example, reduce the power switch of the second modular converter R1 of wireless charging receiver RX1, RX5
The responsibility cycle of RS.Therefore, wireless charging receiver RX1, RX5 will slow down to battery module B1,
The charge rate of B5.
And the second control module R5 of wireless charging receiver RX3, RX4 controls the second modular converter R1
Conversion efficiency, for example lift the work(of the second modular converter R1 of wireless charging receiver RX3, RX4
Rate switchs the responsibility cycle of RS.Therefore, wireless charging receiver RX3, RX4 will be lifted to battery mould
The charge rate of block B3, B4.That is, the multiple wireless charging receiver RX1, RX3~
RX5 can be charged with different charge rates to corresponding battery module B1, B3~B5.
In general, when one of the multiple battery module B1~B5 reaches charging saturation state,
Existing technology will stop to the multiple battery module B1~B5 charging operations.Therefore, except described
Outside one of multiple battery module B1~B5 full charging, remaining battery module is in non-full charging
State.So, present embodiment by wireless charging active balancing mode so that the multiple battery mould
Block B1~B5 is attained by charging saturation state.Electricity for example in battery module B2 reaches saturation state
When, corresponding wireless charging receiver RX2 will stop converting electrical energy, stop whereby to battery module B2
Charge.It is and remaining wireless charging receiver RX1, RX3~RX5 still persistently receive radio energy and right
Battery module B1, B3~B5 charge, and the battery that the multiple battery module B1~B5 is reached whereby holds
The active balancing of amount.
Fig. 3 B are the discharge electricity amount schematic diagrames of the multiple battery module of another embodiment of the present invention.
Refer to Fig. 3 B.The multiple battery module B1~B5 depicted in Fig. 3 B is described many in Fig. 1
Individual battery module B1~B5.Battery module B1~B5 respectively electric discharge reach electricity 30%, 10%, 40%,
5% and 15%.Wherein, battery module B2, B4 electric discharges have reached low battery default value, low battery acquiescence
The 10% of value for example, charged battery capacity.When battery module B2, B4 electric discharge reach low battery default value
When, battery module B2, B4 peel off；Or the electricity of battery module B2, B4 has been vented.
Therefore, battery management system passes the information such as the discharge electricity amount of the multiple battery module B1~B5
It is defeated by the first control module T5 or wireless charging receiver RX1~RX5 of wireless charging conveyer TX1
The second control module R5.Battery module B2, B4 will stop electric discharge operation or slow down discharge rate.And
Wireless charging conveyer TX1 will export radio energy and give wireless charging receiver RX2, RX4, wireless charging
Electric receiver RX2, RX4 will charge to battery module B2, B4.
Additionally, the second control module R5 of wireless charging receiver RX1, RX3 will control electricity higher
Battery module B1, B3 discharge rate improve.Second control module of wireless charging receiver RX5
The discharge rate reduction of the battery module B5 for controlling electricity relatively low is reached the multiple battery by R5 whereby
The active balancing of the battery capacity of module B1~B5.
In simple terms, active balancing can be acted in charging and in electric discharge.Present embodiment is a kind of nothing
Line charge construction, a point string balance is carried out to the multiple battery module B1~B5 by wireless charging technology,
Do not limited that (two typically adjacent Stringing cells modules are mutually put down by the wiring of existing active balancing mode
Weighing apparatus).Therefore, present embodiment can be balanced operation to the battery module B1~B5 of each point of string.
As Fig. 3 A charging operation when, battery management system can filling according to each string battery module B1~B5
Power consumption state, with supply information to wireless charging conveyer TX1 and wireless charging receiver RX1~
RX5.Therefore, wireless charging receiver RX1, RX5 are by battery module B1, the B5 higher to electricity
Slow down charge rate；Battery module B3, B4 wireless charging receiver RX3~RX4 relatively low to electricity
Accelerate charge rate, reach whereby while filling full equilibrium function.
As Fig. 3 B electric discharge operation when, battery management system can be remaining according to each string battery module B1~B5
State of charge, to supply information to wireless charging conveyer TX1 and wireless charging receiver RX1~RX5.
Therefore, electricity battery module B1, B3 higher will take out more electricity, the relatively low battery module of electricity
B2, B4 then supplement electricity by wireless charging conveyer TX1 and wireless charging receiver RX2, RX4,
To be slowed or shut off the electric discharge of electricity relatively low battery module B2, B4, each string battery module is reached whereby
The equilibrium function that B1~B5 is discharged simultaneously.
Fig. 4 is the schematic diagram of the wireless charging balance system of another embodiment of the present invention.Refer to figure
4.Present embodiment is similar to wireless charging receiver TX1a, TX1 of aforementioned embodiments Fig. 2.So
And, still there is difference between wireless charging receiver TX1a, TX1, it is：Electric power source PS is friendship
Stream power supply.And first modular converter T2 include that an AC-DC converting unit T21 and a DC-AC turn
Change unit T23.AC-DC converting unit T21 is electrically connected with electric power source PS and DC-AC conversion is single
First T23.DC-AC conversion unit T23 is electrically connected with transmission coil T3 and the first control module T5.
AC-DC converting unit T21 is for example realized by rectification circuit, bridge circuit or other circuits.Its
His part all same, it will not go into details herein.
Fig. 5 is the schematic diagram of the wireless charging balance system of another embodiment of the present invention.Refer to figure
5.The wireless charging balance of the wireless charging balance system 1a and aforementioned embodiments Fig. 1 of present embodiment
System 1 is similar.However, still having difference between wireless charging balance system 1a, 1, difference exists
In：Present embodiment includes five wireless charging conveyer TX1~TX5 to five wireless charging receivers
RX1~RX5.
The wireless charging balance system 1a of present embodiment is distributed management scheme, with a wireless charging fax
Send device TX1~TX5 respectively to a wireless charging receiver RX1~RX5, show as shown graphically in fig 5.Example
Such as, wireless charging conveyer TX3 is used for transmitting radio energy and gives wireless charging receiver RX3, right whereby
Battery module B3 charges.
For example, when battery module B2 reaches charging saturation state, battery management system notifies wireless
Second control module of the first control module T5 and wireless charging receiver RX2 of charging conveyer TX2
R5, causes wireless charging conveyer TX2 to stop transmission radio energy and gives wireless charging receiver RX2.And
Wireless charging receiver RX2 will stop receiving and conversion radio energy, stops whereby or slows down to battery mould
Block B2 charges.Certainly, remaining wireless charging conveyer TX1, TX3~TX5 and remaining wireless charging connect
Device RX1, RX3~RX5 are received still in wireless charging state.
In other embodiments, when battery module B2 reaches charging saturation state, battery management system
Notify the second of the first control module T5 and wireless charging receiver RX2 of wireless charging conveyer TX2
Control module R5, causes wireless charging conveyer TX2 to stop receiving and conversion radio energy, whereby
Stop or slow down and battery module B2 is charged.In addition, battery management system is by management and control wireless charging conveyer
TX2 transmits radio energy with to remaining wireless charging receiver RX1, RX3~RX5, and it is increased whereby
The charge rate of one of remaining battery module B1, B3~B5.Such as wireless charging conveyer TX2 is passed
Radio energy is sent to give wireless charging receiver RX3.Present embodiment does not limit wireless charging balance system 1a
Running implementation method.
Fig. 6 is the flow of the balance method of the wireless charging balance system of another embodiment of the present invention
Figure.Refer to Fig. 6.A kind of wireless charging balance method, it is adaptable to a wireless charging balance system 1.Nothing
Line charge balance system 1 passes through a battery management system to detect the battery of multiple battery module B1~B5
Electricity.Wireless charging balance system 1 includes an electric power source P1, a wireless charging conveyer TX1 and multiple
Wireless charging receiver RX1~RX5.Wireless charging conveyer TX1 is electrically connected with electric power source P1.Each nothing
Line charging receiver RX1~RX5 be electrically connected with corresponding the multiple battery module B1~B5 wherein it
One, method comprises the following steps：
In step s 601, wireless charging conveyer TX1 is used for for the first electric energy being converted to a radio
Can, and radio energy is transmitted to each wireless charging receiver RX1~RX5.Then, in step S603
In, each wireless charging receiver RX1~RX5 is used for receiving radio energy, and radio energy is converted to
One second electric energy, each second electric energy is used for charging corresponding battery module B1~B5.
In fact, wireless charging conveyer TX1 transmits radio energy to each nothing by transmitting coil T3
Line charging receiver RX1~RX5.Each wireless charging receiver RX1~RX5 passes through receiving coil R3
To receive radio energy.Additionally, wireless charging conveyer TX1 and each wireless charging receiver RX1~RX5
By first and second communication module T7, R7, to create communication channel.Therefore, wireless charging conveyer
The transmittable radio energies of TX1 are caused to specific or specify to battery module B1~B5 that is specific or specifying
Battery module B1~B5 charges.
In step s 605, when the multiple battery module B1~B5 is in charged state, wireless charging
Electric receiver RX1~RX5 slows down converting electrical energy and gives electricity battery module B1~B5 higher；Wireless charging
Electric receiver RX1~RX5 increases converting electrical energy and gives electricity relatively low battery module B1~B5.In fact,
When the multiple battery module B1~B5 is in charged state, battery management system management and control and electricity compared with
One of battery module B1~B5 high or some corresponding wireless charging receiver RX1~RX5,
With slow down converting electrical energy to one of electricity battery module B1~B5 higher or some；Battery management
One of system management and control battery module B1~B5 relatively low with electricity or some corresponding wireless chargings connect
Device RX1~RX5 is received, to increase converting electrical energy to one of relatively low battery module B1~B5 of electricity
Or some.
For example, wireless charging conveyer TX1 transmits radio energy to wireless charging receiver RX1~RX5.
Wherein, battery module B1~B5 has charged and has reached saturation state.Therefore, present embodiment is by wireless
Charging technique carries out a point string balance to the multiple battery module B1~B5, not by existing active balancing
Wiring limitation (two typically adjacent Stringing cells modules are mutually balanced) of mode.Therefore, present embodiment
Operation can be balanced to the battery module B1~B5 of each point of string.
Wherein, the electricity such as the battery module B4 in Fig. 3 A is minimum.Therefore, battery management system can be managed
The running of control wireless charging receiver RX4, to increase second modulus of conversion of wireless charging receiver RX4
The responsibility cycle of block R1, increases converting electrical energy and gives battery module B4 whereby.Except the battery mould of full charging
Outside block B2, the electricity highest of battery module B1.Therefore, battery management system can management and control wireless charging connect
The running of device RX1 is received, to reduce the responsibility week of the second modular converter R1 of wireless charging receiver RX1
Phase, converting electrical energy is slowed down whereby and gives battery module B1.
It is the multiple when the multiple battery module B1~B5 is in discharge condition in step S607
One of battery module B1~B5 electric discharges reach a low battery default value, and battery management system management and control is put
Electricity reaches the battery module B1~B5 of low battery default value, cause corresponding wireless charging receiver RX1~
Battery module B1~B5 that RX5 converting electrical energies reach low battery default value to electric discharge charges.In fact,
As battery module B2, B4 electric discharge in Fig. 3 B reach low battery default value.Therefore, battery module B2,
B4 has peeled off or has been vented, and battery management system can management and control wireless charging conveyer TX1 and wireless charging
The running of electric receiver RX2, RX4, gives wireless with from wireless charging conveyer TX1 transmission radio energies
Charging receiver RX2, RX4, slow down the discharge rate of battery module B2, B4 whereby.
It is noted that in other embodiments, wireless charging conveyer and wireless charging are received
The configuration relation of device is, for example, man-to-man configuration relation.And battery management system is according to man-to-man configuration
Relation, with the running of the multiple wireless charging conveyer of management and control and the multiple wireless charging receiver.
Those skilled in the art according to present embodiment technical spirit can free design drawing 6 flow step
Suddenly.
In sum, the present invention utilizes a kind of wireless charging balance system, by each wireless charging receiver
The design of one of the multiple battery module of correspondence is electrically connected with, to solve the series-parallel electricity of multi-quantity
The wiring issue of the active balancing of pond module.And the present invention discloses a kind of active balancing of wireless charging framework
Mode, not only overcomes wiring issue, and balance strategy also can more elastic and more effective fruit ground lifting it is wireless
The ease of use of charge balance system.Additionally, wireless charging conveyer and wireless charging receiver are matched somebody with somebody
The relation of putting can be centralized management formula or Decentralization formula configuration relation.Present embodiment passes through wireless charging whereby
The technological means of electricity, is controlled with the switch of the circuit connection and complexity that reduce complexity.So, originally
The wireless charging balance system of invention lifts the convenience for using really.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for this
For the technical staff in field, the present invention can have various modifications and variations.It is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in protection of the invention
Within the scope of.
Claims (15)
1. a kind of wireless charging balance system, by a battery management system detecting multiple battery modules
Battery electric quantity, the wireless charging balance system includes：
Electric power source, for providing the first electric energy；
Wireless charging conveyer, is electrically connected with the electric power source, and the wireless charging conveyer is used for institute
State the first electric energy and be converted to radio energy, and transmit the radio energy；And
Multiple wireless charging receivers, each wireless charging receiver is electrically connected with corresponding the multiple
One of battery module, each wireless charging receiver is used for receiving the radio energy, and by institute
State radio energy and be converted to the second electric energy, each second electric energy is used for filling the corresponding battery module
Electricity；
Wherein, the multiple battery module be in charged state when, the battery management system management and control with
One of the multiple battery module of electricity high or some corresponding described wireless charging receivers, with
Slow down converting electrical energy to one of the multiple battery module of electricity high or some；The battery management
One of system management and control and the multiple battery module of low battery or some corresponding described wireless chargings
Receiver, with increase converting electrical energy to one of the multiple battery module of low battery or some.
2. wireless charging balance system as claimed in claim 1, it is characterised in that in the multiple electricity
When pond module is in discharge condition, the electric discharge of one of the multiple battery module reaches low battery default value,
The battery management system management and control electric discharge reaches the battery module of the low battery default value, causes phase
The wireless charging receiver converting electrical energy answered reaches the battery of the low battery default value to electric discharge
Module charges.
3. wireless charging balance system as claimed in claim 1 or 2, it is characterised in that described wireless
Charging conveyer includes the first modular converter, transmission coil, the first control module and the first communication module,
First modular converter is electrically connected with the electric power source, the transmission coil and first control module,
First communication module is electrically connected with first control module.
4. wireless charging balance system as claimed in claim 3, it is characterised in that the electric power source is
Dc source, first modular converter includes direct current-direct current conversion unit and DC-AC conversion unit,
The direct current-direct current conversion unit is electrically connected with the electric power source and the DC-AC conversion unit, described
DC-AC conversion unit is electrically connected with transmission coil and first control module.
5. wireless charging balance system as claimed in claim 3, it is characterised in that the electric power source is
AC power, first modular converter includes AC-DC converting unit and DC-AC conversion unit,
The AC-DC converting unit is electrically connected with the electric power source and the DC-AC conversion unit, described
DC-AC conversion unit is electrically connected with transmission coil and first control module.
6. wireless charging balance system as claimed in claim 1 or 2, it is characterised in that each nothing
Line charging receiver includes receiving coil, the second modular converter, the second control module and the second communication module,
Second modular converter is electrically connected with the receiving coil, the battery module and the second control mould
Block.
7. wireless charging balance system as claimed in claim 6, it is characterised in that second conversion
Module includes rectification unit and direct current-direct current conversion unit, and the rectification unit is electrically connected with the reception line
Circle, the direct current-direct current conversion unit and second control module, the direct current-direct current conversion unit electricity
Property the connection rectification unit, second control module and the battery module.
8. wireless charging balance system as claimed in claim 1 or 2, it is characterised in that the battery
Management system produces the first management and control signal and the second management and control signal according to the electricity of the multiple battery module
One of them is combined, and the wireless charging conveyer is described wireless according to the first management and control signal transmission
Electric energy, whether each wireless charging receiver is according to the second management and control signal deciding from the wireless charging
Electricity transmission device receives the radio energy.
9. wireless charging balance system as claimed in claim 8, it is characterised in that each wireless charging
Electric receiver has identification feature, and the first management and control signal includes identification feature described at least one,
The wireless charging conveyer according to the first management and control signal the identification feature, to transmit the nothing
Line electric energy gives the wireless charging receiver of the corresponding identification feature.
10. wireless charging balance system as claimed in claim 9, it is characterised in that each described wireless
Charging receiver further includes switch, and the second management and control signal includes recognizing spy described at least one
Levy, each wireless charging receiver according to the second management and control signal the identification feature, with turn on
Or end each switch, and the multiple battery module of the battery management system management and control and electricity high
The switch of the corresponding wireless charging receivers of one of them or some, to reduce responsibility cycle,
And one of the battery management system management and control and the multiple battery module of low battery or some phases
The switch of the wireless charging receiver answered, to increase responsibility cycle.
11. wireless charging balance systems as claimed in claim 1, it is characterised in that the cell tube
Reason system sends balancing information to the wireless charging conveyer and the multiple by communication
Wireless charging receiver；Or the battery management system is given balancing information by entity communication interface
The wireless charging conveyer, and the wireless charging receiver then passively receives the radio energy；Or
It is that the battery management system passes through a plurality of entity I/O connecting lines, as the wireless charging conveyer
Electrically connect respectively with the control line of each wireless charging receiver, and the multiple entity I/O connecting lines
The wireless charging conveyer is connect with each wireless charging receiver.
12. a kind of wireless charging balance systems, by a battery management system detecting multiple battery modules
Battery electric quantity, the wireless charging balance system includes：
Electric power source, for providing the first electric energy；
Multiple wireless charging conveyers, are electrically connected with the electric power source, each wireless charging transmission
Device is used for for first electric energy being converted to radio energy, and transmits the multiple radio energy；And
Multiple wireless charging receivers, each wireless charging receiver is electrically connected with corresponding the multiple
One of battery module, each wireless charging receiver is used for receiving the corresponding radio energy,
And the corresponding radio energy is converted into the second electric energy, each second electric energy is used for corresponding institute
State charging battery module；
Wherein, the multiple battery module be in charged state when, the battery management system management and control with
One of the multiple battery module of electricity high or some corresponding described wireless charging receivers, with
Slow down converting electrical energy to one of the multiple battery module of electricity high or some, the battery management
One of system management and control and the multiple battery module of low battery or some corresponding described wireless chargings
Receiver, with increase converting electrical energy to one of the multiple battery module of low battery or some.
13. wireless charging balance systems as claimed in claim 12, it is characterised in that wherein described
When multiple battery modules are in discharge condition, the electric discharge of one of the multiple battery module reaches low battery
Default value, the battery management system management and control reaches the battery module of the low battery default value, causes
Make the corresponding wireless charging receiver converting electrical energy to reaching the battery of the low battery default value
Module charges.
14. a kind of wireless charging balance methods, it is adaptable to a wireless charging balance system, the wireless charging
Level balance system passes through battery management system to detect the battery electric quantity of multiple battery modules, the wireless charging
Level balance system includes electric power source, wireless charging conveyer and multiple wireless charging receivers, described wireless
Charging conveyer is electrically connected with the electric power source, and each wireless charging receiver is electrically connected with corresponding institute
One of multiple battery modules are stated, methods described includes：
The wireless charging conveyer is used for for first electric energy being converted to radio energy, and transmits described
Radio energy gives each wireless charging receiver；
Each wireless charging receiver is used for receiving the radio energy, and the radio energy is changed
It is the second electric energy, each second electric energy is used for corresponding each charging battery module；
When the multiple battery module is in charged state, the battery management system management and control and electricity high
One of the multiple battery module or some corresponding described wireless charging receivers, turned with slowing down
Change electric energy to one of the multiple battery module of electricity high or some；The battery management system pipe
Control and one of the multiple battery module of low battery or some corresponding described wireless chargings receptions
Device, with increase converting electrical energy to one of the multiple battery module of low battery or some.
15. wireless charging balance methods as claimed in claim 14, it is characterised in that the wireless charging
Electric equilibrium method is further included：
When the multiple battery module is in discharge condition, the electric discharge of one of the multiple battery module reaches
To low battery default value, the battery management system management and control electric discharge reaches the described of the low battery default value
Battery module, causes the corresponding wireless charging receiver converting electrical energy to reach the low battery to electric discharge
The charging battery module of default value.
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| CN201510979108.4A CN106911152A (en) | 2015-12-23 | 2015-12-23 | Wireless charging balance system and wireless charging balance method |
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|---|---|---|---|
| CN201510979108.4A CN106911152A (en) | 2015-12-23 | 2015-12-23 | Wireless charging balance system and wireless charging balance method |
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