CN108110832A - A kind of battery core control circuit, battery and control method - Google Patents
A kind of battery core control circuit, battery and control method Download PDFInfo
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- CN108110832A CN108110832A CN201711424146.9A CN201711424146A CN108110832A CN 108110832 A CN108110832 A CN 108110832A CN 201711424146 A CN201711424146 A CN 201711424146A CN 108110832 A CN108110832 A CN 108110832A
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- switching tube
- electronic switching
- control circuit
- battery
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 description 11
- 238000004088 simulation Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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
- H02J7/0018—Circuits for equalisation of charge between batteries using separate charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—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
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H02J7/025—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of field of electrical control more particularly to battery core control circuit, battery and methods.A kind of battery core control circuit includes：First electronic switching tube switchs, anti-parallel diodes between the drain electrode of the first electronic switching tube and source electrode for N-channel MOS pipe, and the grid of the first electronic switching tube sets the first driving circuit, and the first electronic switch is connected with the anode of a battery core；Second electronic switching tube switchs, anti-parallel diodes between the drain electrode of the second electronic switching tube and source electrode for N-channel MOS pipe, and the grid of the second electronic switching tube sets the second driving circuit, the first electronic switch and the second electronic switching tube Opposite direction connection；Electromagnetic assembly is connected between the second electronic switching tube and the cathode of battery core.The wireless energy transfer circuit that the present invention uses avoids the limitation of physical loop, can complete the energy transfer of arbitrary battery core combining form, and energy transfer efficiency is high, while optimizes circuit structure, reduces system bulk, is conducive to prolong the service life.
Description
Technical field
The present invention relates to a kind of field of electrical control more particularly to battery core control circuit, battery and control methods.
Background technology
Energy storage is generally composed of with battery pack section single batteries up to a hundred through series and parallel, to reach suitable voltage etc.
Grade and capacitance grade.Because the difference of design, environment and battery performance itself, battery pack can go out during recycling
The problem of now electricity is inconsistent.The cruising time of battery is so not only influenced, the service life of battery is greatly shortened, more seriously may
It can cause the expendable damages such as overcharge or the overdischarge of battery.In order to solve battery electric quantity it is inconsistent caused by not
Equalization problem needs to carry out balanced management to battery pack.
Battery equalizer is specific to the single battery group structure of series connection, is additional on battery pack, using battery energy
The balanced circuit of topological structure of amount and Balance route algorithm, control each monomer battery voltage or SOC value, make each monomer electricity of battery pack
Pond is operated in " health " state, and does not change primary battery group circuit structure and a kind of electrical control gear of performance.Existing electricity
Pond balance controller, which opens up benefit structure, mainly to be had：Energy-dissipating, bus-type and DC/DC two-way changing types.
Energy-dissipating：Energy-dissipating equilibrium topological circuit, principle is mainly discharged by bypass resistance, by battery
The extra electricity of the higher battery of electricity dissipates in group, achievees the purpose that improvement battery electric quantity is inconsistent with this.Energy-dissipating
Balanced topological circuit consumes battery pack remaining capacity, reduces battery electric quantity, while excessive in order to avoid being generated during conductive discharge
Heat, euqalizing current must be limited in smaller scope.This problem causes equalization efficiency low and generates excessive heat, limitation
The development of such balanced topological circuit.
By balanced sub-circuit, battery and busbar are linked together for bus-type.The battery balanced controller of bus-type need to match somebody with somebody
Energy storage device is put, is influenced by energy storage device volume and service life, causes balanced device inconvenient for use, influences service life, and it is inconvenient
In modularization.
DC/DC changing types, converter type equalizing circuit are real by energy storage inductor based on Buck, Boost topological structure
The transfer of existing energy, improves the inconsistent of battery electric quantity.Two-way DC/DC converter types circuit, will by controlling balance module
The extra electricity of the higher battery of electricity is transferred in adjacent cell, improves the inconsistent of battery electric quantity, can only be it is adjacent (extremely
More 2-3) energy transfer between battery core, balancing speed is slower and inefficient.
The content of the invention
It is to improve energy transfer efficiency the present invention provides the purpose of a kind of battery core control circuit, battery and control method, letter
Change circuit structure, increase the service life of circuit.
Present disclosure is as follows：
A kind of battery core control circuit, including：
First electronic switching tube switchs for N-channel MOS pipe, anti-between the drain electrode of first electronic switching tube and source electrode
To an in parallel diode, the grid of first electronic switching tube sets one first driving circuit, first electronic switch with
The anode connection of one battery core；
Second electronic switching tube switchs for N-channel MOS pipe, anti-between the drain electrode of second electronic switching tube and source electrode
To the diode in parallel, the grid of second electronic switching tube sets one second driving circuit, first electronic switch
With the second electronic switching tube Opposite direction connection；
Electromagnetic assembly is connected between second electronic switching tube and the cathode of the battery core；
When the battery core control circuit is in energy sending mode, first driving of first electronic switching tube
Circuit output pulse is in the conduction state, and the second driving circuit no pulse of second electronic switching tube is off shape
State, the battery core pass through first electronic switching tube and the diode discharge of second electronic switching tube；
When the battery core control circuit is in energy acceptance pattern, first driving of first electronic switching tube
Circuit is off state without output pulse, and second driving circuit output pulse of second electronic switching tube, which is in, to be led
Logical state, the battery core pass through second electronic switching tube and the diode charging of first electronic switching tube；
When the battery core control circuit is in bypass mode, first driving circuit of first electronic switching tube
Off state is in without output pulse with second driving circuit of second electronic switching tube, the battery core is neither filled
Electricity does not also discharge.
A capacitance is also set up, the capacitance is arranged between first electronic switching tube and the battery core cathode, and institute
It is in parallel with the electromagnetic assembly to state capacitance.
The battery core control circuit is integrated in an active equalization module, and a driving is set in the active equalization module
Plate, first electronic switching tube, second electronic switching tube and the electromagnetic assembly are connected to the driving plate；
The electromagnetic assembly is arranged at the top of the driving plate；
First electronic switching tube and second electronic switching tube are separately fixed at the both sides of the electromagnetic assembly.
The electromagnetic assembly includes iron core and the coil being wound on the iron core；
The outlet of the coil of the pin of the first switch pipe, the pin of the second switch pipe and the electromagnetic assembly
It is soldered in the driving plate.
A heat emission hole is provided on the iron core.
A kind of battery carries out charge and discharge control using battery core control circuit described above；It is each described including multiple battery cores
Battery core carries out charge and discharge control by a corresponding battery core control circuit respectively；
When the battery core control circuit is in energy sending mode, the battery core control circuit controls the corresponding electricity
Core discharges；
When the battery core control circuit is in energy acceptance pattern, the battery core control circuit controls the corresponding electricity
Core charges；
When the battery core control circuit is in bypass mode, the battery core neither charges nor discharges.
A kind of battery core control method, for carrying out charge and discharge control to above-described battery；It is characterized in that：Including：
Step S1 detects the voltage of multiple battery cores, selects the highest battery core conduct of voltage in multiple battery cores and puts
Battery core and voltage is minimum in multiple battery cores battery core is selected as charging battery core, and calculate multiple battery cores
Average voltage；
The battery core control circuit of the electric discharge battery core is arranged in the energy sending mode by step S2, will
The battery core control circuit of the charging battery core is arranged in the energy acceptance pattern and by other battery core
The battery core control circuit is respectively set to, in the bypass mode, then perform step S3 and step S4 respectively；
Step S3, persistently detect it is described electric discharge battery core voltage, and it is described electric discharge battery core voltage be less than it is described average
The battery core control circuit of the electric discharge battery core is arranged in the bypass mode during voltage, is then returned to the step
S1；
Step S4, persistently detects the voltage of the charging battery core, and the charging battery core voltage be more than it is described average
The battery core control circuit of the charging battery core is arranged in the bypass mode during voltage, is then returned to the step
S1。
Beneficial effects of the present invention：
The wireless energy transfer circuit that the present invention uses avoids the limitation of physical loop, can complete arbitrary battery core combination
The energy transfer of form, energy transfer efficiency is high, while optimizes circuit structure, reduces system bulk, is conducive to extension and uses the longevity
Life.
Description of the drawings
Fig. 1 is the circuit diagram of battery core control circuit of the present invention；
Fig. 2 is the structure diagram of active equalization module in the present invention；
Fig. 3 is the topological schematic diagram of battery in the present invention；
Fig. 4 is the flow chart of battery core control method of the present invention；
Fig. 5 is the change curve of the remaining capacity during analogue simulation of battery core module 1 of the present invention；
Fig. 6 is the change curve of the remaining capacity during analogue simulation of battery core module 2 of the present invention；
Fig. 7 is the change curve of the remaining capacity during analogue simulation of battery core module 3 of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The invention will be further described in the following with reference to the drawings and specific embodiments, but not as limiting to the invention.
As shown in Figure 1, battery core control circuit realizes the physics in energy circuit between battery core using wireless energy transmission technology
Segmentation, considers the requirement such as insulation, structure and heat dissipation and the electromagnetic assembly wireless energy transfer and power conversion circuit seal
It fills as a modular unit.Battery core control circuit includes：
First electronic switching tube MosfetA, for N-channel MOS pipe switch, the drain electrode of the first electronic switching tube MosfetA and
One diode 1 of reverse parallel connection between source electrode, grid one first driving circuit of setting of the first electronic switching tube MosfetA, first
Electronic switch MosfetA is connected with the anode of a battery core；
Second electronic switching tube MosfetB, for N-channel MOS pipe switch, the drain electrode of the second electronic switching tube MosfetB and
One diode 2 of reverse parallel connection between source electrode, grid one second driving circuit of setting of the second electronic switching tube MosfetB, first
Electronic switch MosfetA and the second electronic switching tube MosfetB Opposite direction connections；
Electromagnetic assembly 3 is connected between the second electronic switching tube MosfetB and the cathode of battery core；
When battery core control circuit is in energy sending mode, the first driving circuit of the first electronic switching tube MosfetA
Output pulse is in the conduction state, and the second driving circuit no pulse of the second electronic switching tube MosfetB is off state, electricity
Core passes through the first electronic switching tube MosfetA and the diode discharge of the second electronic switching tube MosfetB；
When battery core control circuit is in energy acceptance pattern, the first driving circuit of the first electronic switching tube MosfetA
State is off without output pulse, the second driving circuit output pulse of the second electronic switching tube MosfetB is on shape
State, battery core pass through the second electronic switching tube MosfetB and the diode charging of the first electronic switching tube MosfetA；
When battery core control circuit is in bypass mode, the first driving circuit of the first electronic switching tube MosfetA and
The second driving circuit of two electronic switching tube MosfetB is in off state without output pulse, and battery core neither charges nor puts
Electricity.
A capacitance C is also set up, capacitance C is arranged between the first electronic switching tube MosfetA and battery core cathode, and capacitance C
It is in parallel with electromagnetic assembly.
As shown in Fig. 2, battery core control circuit is integrated in an active equalization module, one is set to drive in active equalization module
Movable plate 1, the first electronic switching tube MosfetA, the second electronic switching tube MosfetB and electromagnetic assembly 3 are connected to driving plate 1；
Electromagnetic assembly 3 is arranged at the top of driving plate 4；
First electronic switching tube MosfetA and the second electronic switching tube MosfetB are separately fixed at the two of electromagnetic assembly 3
Side.
Electromagnetic assembly 3 includes iron core and the coil being wound on iron core, does not embody iron core and coil in Fig. 4.
The coil of the pin of first switch pipe MosfetA, the pin of second switch pipe MosfetB and electromagnetic assembly goes out
Line is soldered in driving plate 1.
A heat emission hole 5 is provided on iron core.
Electromagnetic assembly 3 is made of iron core and coil, and coil is for receiving the energy transferred in battery core and changing into certain
The electromagnetic field of frequency.Coil can send energy according to control requirement or receive energy by design.Iron core is used to implement magnetic energy
The storage and transmission of amount, coil be wound on above iron core, and core design can realize OH crystal convenient for the hole of heat dissipation
Manage the function of the heat dissipation of (Metal-Oxide-Semiconductor Field-Effect Transistor, Mosfet).Coil
Including a transmitting coil and a receiving coil, transmitting coil is with receiving coil using symmetrical coiling.
As shown in figure 3, a kind of battery, charge and discharge control is carried out using more than battery core control circuit；Battery includes multiple electricity
Core, each battery core carry out charge and discharge control by a corresponding battery core control circuit respectively；
When battery core control circuit is in energy sending mode, battery core control circuit controls corresponding battery core electric discharge；
When battery core control circuit is in energy acceptance pattern, battery core control circuit controls corresponding battery core to charge；
When battery core control circuit is in bypass mode, battery core neither charges nor discharges.
As shown in figure 4, battery core control method, for carrying out charge and discharge control to above battery, including：
Step S1 detects the voltage of multiple battery cores, selects the highest battery core of voltage in multiple battery cores and is used as electric discharge battery core, with
And voltage is minimum in multiple battery cores battery core is selected as charging battery core, and calculate the average voltage of multiple battery cores；
The battery core control circuit for battery core of discharging is arranged in energy sending mode, by the electricity for the battery core that charges by step S2
Core control circuit is arranged in energy acceptance pattern and the battery core control circuit of other battery cores is respectively set in side
Road pattern then performs step S3 and step S4 respectively；
Step S3, the voltage of lasting detection electric discharge battery core, and will electric discharge when the voltage for battery core of discharging is less than average voltage
The battery core control circuit of battery core is arranged in bypass mode, is then returned to step S1；
Step S4, the lasting voltage for detecting charging battery core, and will charge when the voltage of charging battery core is more than average voltage
The battery core control circuit of battery core is arranged in bypass mode, is then returned to step S1.
The present invention uses full symmetric topological structure, energy transfer circuit for the radiating circuit and receiving circuit of battery core
Transmitting coil and receiving coil winding method also use symmetric form, so in design wireless energy transfer circuit and electricity
Amount conversion circuit is encapsulated as a modular unit, becomes the active equalization modular unit mating with battery core, i.e. battery core grade is actively equal
Weigh unit, convenient for batch production.If necessary to be matched with the battery pack of more battery cores series connection, modular unit and battery core
It connects, is stitched together between modular unit by the requirement of wireless transmission, it is possible to realize to battery pack active equalization
Function.
By parameter designing, capacitance is microfarad (μ F) grade in circuit, convenient for using the tantalum capacitance of long-life, ensureing system
Long-term reliability.It can be seen that the design tool of the battery core grade active equalization unit using wireless power transmission of present patent application
Have the advantages that batch production, low cost and can modularization, scalability, convenient for the marketing of active equalization.
The size of magnetic field intensity is to have a very big relation with distance near field, and its uniformity is very near field
Difference, but its quantum of energy always emission source and its around around flowing, not external good fortune penetrates, so, place and connect around near field
Receiving apparatus can be so conveyed to reception device by sending out using the alternating magnetic field near field region as medium by this medium
The energy that device is sent to provide, just can realize wireless transmission.Magnetic coupling resonator system is divided into transmitting terminal and receiving terminal two parts, sends
End and receiving terminal are respectively there are one resonator, when transmitting terminal has external drive signal, and its exciting signal frequency and resonant frequency
When close, which will occur resonance, and energy can be transmitted from transmitting terminal to receiving terminal, reach the effect of wireless energy transfer
Fruit.Electromagnetic assembly of the present invention has the dual function sent and received, by control can automatically switch.
The present invention provides one embodiment, there are three battery in battery core control circuit, the battery core in battery corresponds
Connect control circuit.
As shown in Figure 1, battery core control circuit includes：
First electronic switching tube MosfetA, for N-channel MOS pipe switch, the drain electrode of the first electronic switching tube MosfetA and
Grid one first driving circuit of setting of reverse parallel connection one diode D, the first electronic switching tube MosfetA between source electrode, first
Electronic switch MosfetA is connected with the anode of a battery core；
Second electronic switching tube MosfetB, for N-channel MOS pipe switch, the drain electrode of the second electronic switching tube MosfetB and
Grid one second driving circuit of setting of reverse parallel connection one diode D, the second electronic switching tube MosfetB between source electrode, first
Electronic switch MosfetA and the second electronic switching tube MosfetB Opposite direction connections；
Electromagnetic assembly 3 is connected between the second electronic switching tube MosfetB and the cathode of battery core；
As shown in Fig. 2, battery core control circuit is integrated in an active equalization module, one is set to drive in active equalization module
Movable plate 1, the first electronic switching tube MosfetA, the second electronic switching tube MosfetB and electromagnetic assembly 3 are connected to driving plate 1；
Electromagnetic assembly 3 is arranged at the top of driving plate 4；
First electronic switching tube MosfetA and the second electronic switching tube MosfetB are separately fixed at the two of electromagnetic assembly 3
Side.
Electromagnetic assembly 3 includes iron core and the coil being wound on iron core, does not embody iron core and coil in Fig. 4.
The coil of the pin of first switch pipe MosfetA, the pin of second switch pipe MosfetB and electromagnetic assembly goes out
Line is soldered in driving plate 1.
A heat emission hole 5 is provided on iron core.
When battery core control circuit is in energy sending mode, the first driving circuit of the first electronic switching tube MosfetA
Output pulse is in the conduction state, and the second driving circuit no pulse of the second electronic switching tube MosfetB is off state, electricity
Core passes through the first electronic switching tube MosfetA and the diode discharge of the second electronic switching tube MosfetB；
When battery core control circuit is in energy acceptance pattern, the first driving circuit of the first electronic switching tube MosfetA
State is off without output pulse, the second driving circuit output pulse of the second electronic switching tube MosfetB is on shape
State, battery core pass through the second electronic switching tube MosfetB and the diode charging of the first electronic switching tube MosfetA；
When battery core control circuit is in bypass mode, the first driving circuit of the first electronic switching tube MosfetA and
The second driving circuit of two electronic switching tube MosfetB is in off state without output pulse, and battery core neither charges nor puts
Electricity.
As shown in figure 3, battery structure in this circuit.It is automatically controlled that each battery uses more than battery core control circuit to carry out charge and discharge
System；Battery includes multiple battery cores, and each battery core carries out charge and discharge control by a corresponding battery core control circuit respectively；
When battery core control circuit is in energy sending mode, battery core control circuit controls corresponding battery core electric discharge；
When battery core control circuit is in energy acceptance pattern, battery core control circuit controls corresponding battery core to charge；
When battery core control circuit is in bypass mode, battery core neither charges nor discharges.
As shown in figure 4, control method is as follows：
Step S1 detects the voltage of five battery cores, selects the highest battery core of voltage in five battery cores and is used as electric discharge battery core, with
And voltage is minimum in five battery cores battery core is selected as charging battery core, and calculate the average voltage of multiple battery cores；
The battery core control circuit for battery core of discharging is arranged in energy sending mode, by the electricity for the battery core that charges by step S2
Core control circuit is arranged in energy acceptance pattern and the battery core control circuit of other battery cores is respectively set in side
Road pattern then performs step S3 and step S4 respectively；
Step S3, the voltage of lasting detection electric discharge battery core, and will electric discharge when the voltage for battery core of discharging is less than average voltage
The battery core control circuit of battery core is arranged in bypass mode, is then returned to step S1；
Step S4, the lasting voltage for detecting charging battery core, and will charge when the voltage of charging battery core is more than average voltage
The battery core control circuit of battery core is arranged in bypass mode, is then returned to step S1.
In the preferred embodiment of the present invention, using the battery core mould with the analogue simulation parameter shown in following table a
The battery core group of block 1-3 compositions, and using the above battery core control circuit and battery core control method to battery core group
Charge and discharge process carries out analogue simulation：
| Module 1 | Module 2 | Module 3 | |
| Inductance L (μ H) | 1.65 | 1.65 | 1.65 |
| Mutual inductance Lm (μ H) | 1.64 | 1.64 | 1.64 |
| Capacitance C (μ f) | 0.136 | 0.136 | 0.136 |
| Battery capacity (Ah) | 20 | 20 | 20 |
| The initial SOC of battery | 80% | 20% | 60% |
| Battery rated voltage (V) | 3.3 | 3.3 | 3.3 |
Table a
In table a, the initial SOC of battery refers to the initial residual electricity of each battery core module.It is supervised during by analogue simulation
The result measured is：The electricity of battery core module 1 is reduced, the remaining capacity increase of battery core module 2, the residue electricity of battery core module 3
Amount does not change, this shows that battery core module 1 charges to battery core module 2, and battery core module 3 is not engaged in charge and discharge (battery core mould
Remaining capacity change curves of the block 1-3 during analogue simulation is shown in Fig. 5-7).
Specifically, the initial residual electricity of battery core module 1 is 80%, be that electricity is most in three battery core modules one,
Therefore according to the above battery core control mode, which is currently at energy sending mode, at this time battery core module
1 exports electricity by above-mentioned battery core control circuit, and the remaining capacity change curve of the battery core module 1 is gradual as shown in Figure 5
The trend of reduction.
The initial residual electricity of battery core module 2 is 20%, be that electricity is minimum in three battery core modules one, therefore basis
The above battery core control mode, the battery core module 2 are in energy acceptance pattern, and the remaining capacity of the battery core module 2 becomes
It is as shown in Figure 6 gradual increased trend to change curve.
The battery initial residual electricity of battery core module 3 be 60%, in three battery core modules electricity be not it is most nor
Minimum one, therefore according to the above battery core control mode, which is in bypass mode, the battery core mould
The remaining capacity change curve of block 3 is the trend to remain unchanged as shown in Figure 7.
The present invention is using the design of the battery core grade active equalization unit of wireless power transmission, the electricity between battery core and battery core
Transmission is avoided the limitation of physical loop, is charged, discharged, standing different works in this way, no matter battery core is in using wireless mode
Make state, the energy transfer of any combination in capacity allowed band can be completed, so as to fulfill it is one-to-one, one-to-many,
Many-one, the effective energy of multi-to-multi are balanced.Since the energy between this patent battery core is using wireless transmission, so, for electricity
The active equalization circuit of core can be separated from physical connection, and primary condition is created for modularized design.
The foregoing is merely preferred embodiments of the present invention, not thereby limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent substitution and obviously change obtained scheme, should all include within the scope of the present invention.
Claims (7)
1. a kind of battery core control circuit, it is characterised in that：Including：
First electronic switching tube switchs for N-channel MOS pipe, between the drain electrode of first electronic switching tube and source electrode reversely simultaneously
Join a diode, the grid of first electronic switching tube sets one first driving circuit, first electronic switch and an electricity
The anode connection of core；
Second electronic switching tube switchs for N-channel MOS pipe, between the drain electrode of second electronic switching tube and source electrode reversely simultaneously
Join the diode, the grid of second electronic switching tube sets one second driving circuit, first electronic switch and institute
State the second electronic switching tube Opposite direction connection；
Electromagnetic assembly is connected between second electronic switching tube and the cathode of the battery core；
When the battery core control circuit is in energy sending mode, first driving circuit of first electronic switching tube
Output pulse is in the conduction state, and the second driving circuit no pulse of second electronic switching tube is off state,
The battery core passes through first electronic switching tube and the diode discharge of second electronic switching tube；
When the battery core control circuit is in energy acceptance pattern, first driving circuit of first electronic switching tube
State is off without output pulse, second driving circuit output pulse of second electronic switching tube is on shape
State, the battery core pass through second electronic switching tube and the diode charging of first electronic switching tube；
When the battery core control circuit is in bypass mode, first driving circuit of first electronic switching tube and institute
Second driving circuit for stating the second electronic switching tube is in off state without output pulse, and the battery core neither charges
It does not discharge.
2. battery core control circuit according to claim 1, it is characterised in that：A capacitance is also set up, the capacitance is arranged on
Between first electronic switching tube and the battery core cathode, and the capacitance is in parallel with the electromagnetic assembly.
3. battery core control circuit according to claim 1, it is characterised in that：The battery core control circuit is integrated in one actively
In balance module, a driving plate, first electronic switching tube, second electronic cutting are set in the active equalization module
Electromagnetic assembly described in Guan Guanhe is connected to the driving plate；
The electromagnetic assembly is arranged at the top of the driving plate；
First electronic switching tube and second electronic switching tube are separately fixed at the both sides of the electromagnetic assembly.
4. battery core control circuit according to claim 3, it is characterised in that：The electromagnetic assembly includes iron core and coiling
Coil on the iron core；
The outlet of the coil of the pin of the first switch pipe, the pin of the second switch pipe and the electromagnetic assembly is welded
It is connected in the driving plate.
5. the battery core control circuit according to claim 4 using wireless radio transmission, it is characterised in that：It is opened on the iron core
There is a heat emission hole.
6. a kind of battery carries out charge and discharge control using the battery core control circuit as described in claim 1-5；It is characterized in that：
Including multiple battery cores, each battery core carries out charge and discharge control by a corresponding battery core control circuit respectively；
When the battery core control circuit is in energy sending mode, the battery core control circuit controls the corresponding battery core to put
Electricity；
When the battery core control circuit is in energy acceptance pattern, the battery core control circuit controls the corresponding battery core to fill
Electricity；
When the battery core control circuit is in bypass mode, the battery core neither charges nor discharges.
7. a kind of battery core control method, for carrying out charge and discharge control to battery as claimed in claim 6；It is characterized in that：
Including：
Step S1 detects the voltage of multiple battery cores, selects the highest battery core of voltage in multiple battery cores as electric discharge electricity
Core and voltage is minimum in multiple battery cores battery core is selected as charging battery core, and calculate being averaged for multiple battery cores
Voltage；
The battery core control circuit of the electric discharge battery core is arranged in the energy sending mode, by described in by step S2
The battery core control circuit of charging battery core is arranged in the energy acceptance pattern and will be described in other described battery core
Battery core control circuit is respectively set to, in the bypass mode, then perform step S3 and step S4 respectively；
Step S3 persistently detects the voltage of the electric discharge battery core, and is less than the average voltage in the voltage of the electric discharge battery core
When by it is described electric discharge battery core the battery core control circuit be arranged in the bypass mode, be then returned to the step S1；
Step S4 persistently detects the voltage of the charging battery core, and is more than the average voltage in the voltage of the charging battery core
When the battery core control circuit of the charging battery core is arranged in the bypass mode, be then returned to the step S1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711424146.9A CN108110832A (en) | 2017-12-25 | 2017-12-25 | A kind of battery core control circuit, battery and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424146.9A CN108110832A (en) | 2017-12-25 | 2017-12-25 | A kind of battery core control circuit, battery and control method |
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| CN108110832A true CN108110832A (en) | 2018-06-01 |
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| CN201711424146.9A Pending CN108110832A (en) | 2017-12-25 | 2017-12-25 | A kind of battery core control circuit, battery and control method |
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