CN205489630U - Group battery electric quantity equalizer circuit - Google Patents
Group battery electric quantity equalizer circuit Download PDFInfo
- Publication number
- CN205489630U CN205489630U CN201620095284.1U CN201620095284U CN205489630U CN 205489630 U CN205489630 U CN 205489630U CN 201620095284 U CN201620095284 U CN 201620095284U CN 205489630 U CN205489630 U CN 205489630U
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- Prior art keywords
- battery
- circuit
- electric capacity
- voltage
- resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a group battery electric quantity equalizer circuit, including the balanced element circuit of a N -1 battery, a N voltage sampling circuit, auxiliary power supply module, single -chip computer control module and drive module, a K voltage sampling circuit, a K+1 voltage sampling circuit gathers K respectively, the voltage at a K+1 battery both ends, and transmit to single -chip computer control module, single -chip computer control module is outlet driving signal to drive module in view of the above, the drive signal of drive module output transmits respectively to the balanced element circuit of a K battery, the balanced unit circuit control K battery discharge of a K battery, a K+1 battery charges or a K battery charges, a K+1 battery discharge, make K, a K+1 battery reaches the electric quantity equilibrium, 1 <= K <= N -1 wherein. The utility model discloses an equalizer circuit, its simple structure, conversion efficiency is high, with low costs and the good reliability, can improve the available capacity of group battery, the life of extension group battery.
Description
Technical field
This utility model relates to technical field of battery management, particularly to a kind of battery electric quantity equalizing circuit,
It is applicable to the rechargeable battery set of series connection.
Background technology
In new forms of energy system, battery system is the most indispensable important component part, in recent years, with
Lithium battery is that the electric bicycle of power, hybrid vehicle, electric automobile, fuel cell car etc. are with height
The advantages such as energy density, high repetitive cycling access times, lightweight and environmental protection are paid close attention to by people.
The safety of battery use process it is critical only that battery management system with Control for Dependability, battery to be ensured
Safe and reliable use, and the ability of battery to be given full play to and increasing the service life.One set of cells is led to
Often include several battery unit being serially connected, owing to each battery unit is in charged state, impedance and temperature
The difference of each side such as characteristic can cause the imbalance between these battery units.This unbalanced phenomena makes
The capacity of whole set of cells reduces, the lost of life.Therefore, need to apply battery equalizing circuit in set of cells
Adjusted, to keep the capacity of set of cells, extend the life-span of set of cells.
The electricity being likely to occur for series-connected cell is higher, problem on the low side, and solution has parallel resistance to shunt
The equalizing circuits such as method, bi-directional DC-DC equalization, coaxial transformer equalization, but these circuit have change
Depressor so that circuit cost increases.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, it is provided that a kind of battery electric quantity
Equalizing circuit, for ensureing that the monomer in set of cells occurs without overcharge during charging and discharging and puts with crossing
For the purpose of electricity, thus improve the unbalanced phenomenon of series battery, improve the active volume of set of cells, reduce
The maintenance of series battery and replacement cycle, extend the service life of set of cells, reduce EV, PHEV and accumulation of energy
The cost in power station.
The purpose of this utility model is realized by following technical scheme:
A kind of battery electric quantity equalizing circuit, for equalizing the electricity of the set of cells that N number of series-connected cell is constituted,
Including N-1 battery balanced element circuit, N number of voltage sample electricity of gathering N number of battery both end voltage respectively
Road, auxiliary power module, single chip control module and driving module；Wherein k-th battery balanced unit electricity
Road the first port, the second port, the 3rd port connect respectively the positive pole of k-th battery, k-th battery with
The junction of K+1 battery, the negative pole of K+1 battery；K-th voltage sampling circuit, K+1
Individual voltage sampling circuit gathers k-th battery, the voltage at the K+1 battery two ends respectively, and transmits to list
Sheet machine control module, single chip control module output after calculating is corresponding drive signal to driving module,
The driving signal driving module output is transmitted separately to the battery balanced element circuit of k-th, and k-th battery is equal
Weighing apparatus element circuit control k-th battery discharge, the charging of the K+1 battery or k-th battery charges, the
K+1 battery discharge so that k-th battery, the K+1 battery reach electric quantity balancing, wherein 1≤K≤
N-1。
Described battery balanced element circuit, all includes the first switching tube, second switch pipe, the one or two pole
Pipe, the second diode, the first electric capacity, the first inductance, the second inductance, the first diode inverse parallel is first
On switching tube, the second diode inverse parallel on second switch pipe, one end of the first inductance and the first battery
Positive pole is connected, and the other end of the first inductance and the drain electrode of the positive pole of the first electric capacity and the first switching tube are connected, the
The positive pole of the source electrode of one switching tube and the negative pole of the first battery, the second battery is connected, the source electrode of second switch pipe
Being connected with the positive pole of the second battery, the drain electrode of second switch pipe is connected with the negative pole of the first electric capacity, the first electric capacity
Negative pole connect one end of the second inductance simultaneously；The other end of the second inductance and the negative pole of the second battery are connected；The
One voltage sensor is sampled terminal voltage Ub1 of the first battery；Second voltage sensor sample the second battery end electricity
Pressure Ub2.
Described auxiliary power module include the first rectifier bridge, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity,
One resistance, the second resistance, for exporting the first voltage stabilizing chip of 15V DC voltage and for exporting 5V direct current
Second voltage stabilizing chip of voltage；Wherein the second rectifier bridge upper end, lower end connect the two ends of input power VAC respectively,
The positive pole of left end and the 5th electric capacity connects, and the negative pole of right-hand member and the 5th electric capacity connects；The positive terminal of the 3rd electric capacity
Connect the input of the first voltage stabilizing chip, the input of the output termination second voltage stabilizing chip of the first voltage stabilizing chip,
The outfan of the second voltage stabilizing chip is connected with the input of single chip control module and driving module；First voltage stabilizing
The earth terminal of chip and second resistance one end connect, the other end ground connection of the second resistance；One end of first resistance
Being connected with one end of the second resistance, another terminates the outfan of the first voltage stabilizing chip；It is steady that 4th electric capacity connects second
The input of pressure chip, other end ground connection；The positive pole of the 5th electric capacity terminates the outfan of the second voltage stabilizing chip,
Other end ground connection.
Described driving module includes the driving signal judging circuit that 2 × (N-1) individual structures are identical, each driving
Signal judging circuit all includes the 3rd resistance, the 6th electric capacity, first and door, the first driving isolation circuit；Single
The control signal of sheet machine control module output be connected to the 3rd resistance and first with an input of door；3rd
Another termination first of resistance and another input of door and one end of the 6th electric capacity, the other end of the 6th electric capacity
Ground connection；First connects the first driving isolation circuit with the output of door.
Described drive isolation circuit include the first audion, the second audion, the 7th electric capacity, the first transformator,
4th resistance；The base stage of the first audion connects the output of first and door with the base stage of the second audion after being connected；
The emitter stage of the first audion and the emitter stage of the second audion are connected with one end of the 7th electric capacity after being connected, the
The colelctor electrode of one audion connects the output of the first voltage stabilizing chip, the current collection of the second audion in auxiliary power module
Pole be connected with an input of the first transformator after ground connection, another of the 7th electric capacity terminates the first transformator
Another input；One outfan of the first transformator and one end of the 4th resistance are connected, and another terminates main electricity
The source electrode of way switch pipe, the gate pole of another termination main circuit switch pipe of the 4th resistance.
The battery electric quantity equalization methods of battery electric quantity equalizing circuit, comprises following sequence:
S1. k-th voltage sampling circuit, the K+1 voltage sampling circuit gather respectively k-th battery,
The voltage at K+1 battery two ends, and transmit to single chip control module；
S2. single chip control module output after calculating is corresponding drives signal to driving module, drives module
The driving signal of output is transmitted separately to the battery balanced element circuit of k-th；
S3. the battery balanced element circuit of k-th control k-th battery discharge, the K+1 battery charge or
The charging of k-th battery, the K+1 battery discharge so that k-th battery, the K+1 battery reach electricity
Amount equilibrium, wherein 1≤K≤N-1, N are the number of batteries of set of cells series connection.
This utility model compared with prior art, has the advantage that and beneficial effect:
This utility model ensure that the monomer in set of cells occur without during charging and discharging overcharge and
For the purpose of overdischarge, thus improve the unbalanced phenomenon of series battery, improve the active volume of set of cells,
Reduce the maintenance of series battery and replacement cycle, extend the service life of set of cells, reduce EV, PHEV and
The cost of storage station.
When in set of cells, any one monomer energy is too high or too low, by opening of battery balanced element circuit
Closing break-make makes it reach electric quantity balancing with adjacent battery, then with several balanced unit circuit realiration batteries
The overall equilibrium of group.
Accompanying drawing explanation
Fig. 1 is the structural representation of battery electric quantity equalizing circuit described in the utility model.
Fig. 2 is the circuit diagram of auxiliary power module of the present utility model.
Fig. 3 is the circuit diagram of driving module of the present utility model.
Fig. 4 is the driving isolation circuit diagram in driving module of the present utility model.
Fig. 5 is the circuit diagram of battery balanced element circuit described in the utility model.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but this utility model
Embodiment be not limited to this.
Fig. 1 gives the structural representation of a kind of battery equalizing circuit of this utility model example, including
Main circuit, auxiliary power module, single chip control module (can use conventional single-chip microcomputer), drives module.
Main circuit includes that N saves the lead-acid battery or lithium ion battery, first～(N-1) balanced unit being connected in series
Circuit, such as Fig. 5, each equilibrium element circuit respectively with three end points of two adjacent batteries (positive pole,
Both positive and negative polarity junction point, negative pole) be connected, the first balanced unit circuit include the first switching tube, second switch pipe,
First diode, the second diode, the first electric capacity, the first inductance, the second inductance, the first diode is anti-also
Being associated on the first switching tube, the second diode inverse parallel is on second switch pipe, and one end of the first inductance is with electric
The positive pole in pond 1 is connected, the other end of the first inductance and the drain electrode phase of the positive pole of the first electric capacity and the first switching tube
Even, the source electrode of the first switching tube is connected with the negative pole of battery 1 and the positive pole of battery 2, the source of second switch pipe
Pole is connected with the positive pole of battery 2, and the drain electrode of second switch pipe is connected with the negative pole of the first electric capacity, the first electric capacity
Negative pole connect one end of the second inductance simultaneously；The other end of the second inductance is connected with the negative pole of battery 2；First
Terminal voltage Ub1 of voltage sensor sampling battery 1；Terminal voltage Ub2 of the second voltage sensor sampling battery 2,
Second～(N-1) individual equalizing circuit unit there is the structure identical with the first equalizing circuit unit.Sampling electricity
Road includes N number of identical voltage sensor circuit, and the input of N voltage sensor and N battery two ends are also
Connection, the output of N voltage sensor connects the battery N terminal voltage UbN sampling input of single chip control module.
The alternating voltage of 220V is converted into the direct voltage output of 15V and 5V by auxiliary power module, as monolithic
Machine control module and the accessory power supply of driving module.As shown in the balanced unit circuit 1 in figure, if battery 1
Voltage Ub1 more than the voltage Ub2 of battery 2, then open signal to the first switching tube Q1, battery 1 passes through
First inductance L1 and the first switching tube Q1 electric discharge, so that the terminal voltage of battery 1 reduces, meanwhile, first
Electric capacity, the first switch, the second inductance, battery 2 form loop, and battery 2 is charged by the first electric capacity,
So that the terminal voltage of battery 2 raises；If the voltage Ub1 of battery 1 is less than the voltage Ub2 of battery 2, then give
Second switch pipe Q2 opens signal, and battery 2 is discharged by the second inductance L2 and second switch pipe Q2, thus
The terminal voltage making battery 2 reduces, and meanwhile, the first electric capacity, the first inductance, battery 1, second switch are formed back
Road, battery 1 is charged by the first electric capacity, so that the terminal voltage of battery 1 raises；By adjusting first
The ON time of switching tube and second switch pipe realizes the automatic equalization of the electricity of battery 1 and battery 2.With this
Analogizing, the battery electric quantity that this battery balanced element circuit can realize any even number series-connected cell composition is equal
Weighing apparatus.
Fig. 2 gives the circuit diagram of the auxiliary power module of this utility model battery equalizing circuit, accessory power supply
Module includes rectifier bridge Bridge, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the first resistance
R1, the second resistance R2.For exporting the first voltage stabilizing chip TL783 of 15V DC voltage and for exporting 5V
Second voltage stabilizing chip 7805 of DC voltage.The upper and lower two ends of rectifier bridge Bridge connect input power Vac's respectively
AC+ Yu AC-two ends, two ends with the 3rd electric capacity respectively, two ends connect.It is steady that the positive pole of the 3rd electric capacity terminates first
The Vin1 end of pressure chip, the output end vo ut1 of the first voltage stabilizing chip meets the input Vin2 of the second voltage stabilizing chip,
The output end vo ut2 of the second voltage stabilizing chip is connected with the input Vcc of one-chip computer module and driving module.The
Earth terminal and second resistance one end of one voltage stabilizing chip connect, the other end ground connection of the second resistance.First resistance
One end be connected with one end of the second resistance, another terminates the outfan of the first voltage stabilizing chip.4th electric capacity
Positive pole connects the input of the second voltage stabilizing chip, other end ground connection.The positive pole of the 5th electric capacity terminates the second voltage stabilizing core
The outfan of sheet, other end ground connection.The ac voltage rectifier of 220V is become DC voltage by rectifier bridge, the first electricity
The size of the resistance regulation TL783 output voltage of resistance and the second resistance, the 4th electric capacity is the first voltage stabilizing chip
The output filter capacitor of TL783 and the input filter capacitor of the second voltage stabilizing chip 7805, the 5th electric capacity is second
The output filter capacitor of voltage stabilizing chip, voltage stabilizing chip TL783 and 7805 exports the direct current of 15V and 5V respectively
Voltage, as the power supply of each control circuit of internal system.
Fig. 3 give drive module circuit diagram, drive module include the 3rd resistance R3, the 6th electric capacity C6,
First drives isolation circuit with door U1 and first.The driving signal of single chip control module output connects respectively
One end of 3rd resistance and first and door.Another termination first of 3rd resistance and one end of door and the 6th electric capacity
One end, the other end ground connection of the 6th electric capacity；First connects the first driving isolation circuit with the output of door.
Fig. 4 gives and drives the circuit diagram driving isolation in module, drives isolation circuit to include the first audion
VT1, the second audion VT2, the 7th electric capacity C7, the first transformator T1, the 4th resistance R4；One or three pole
The base stage of pipe connects the output of first and door with the base stage of the second audion after being connected；The transmitting of the first audion
Pole is connected with one end of the 7th electric capacity after being connected with the emitter stage of the second audion, the colelctor electrode of the first audion
Connect the output of the first voltage stabilizing chip in auxiliary power module, the colelctor electrode of the second audion and the first transformator
One input be connected after ground connection, another of the 7th electric capacity terminates another input of the first transformator；First
One outfan of transformator and one end of the 4th resistance are connected, the switching tube that another termination main circuit is driven
Source electrode, the 4th resistance another termination the driven switching tube of main circuit gate pole.When the high electricity driving signal
During flat arrival, the first triode ON, due to the effect of the first transformator, drive signal 1 to export high level,
Driving switching tube turns on；When being low level when driving signal, the second triode ON, the first transformator input
For low level, drive signal 1 output low level, drive switching tube to turn off.
Above-described embodiment is this utility model preferably embodiment, but embodiment of the present utility model is not
Being restricted to the described embodiments, any of other is made without departing from spirit of the present utility model and principle are lower
Change, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in this practicality
Within novel protection domain.
Claims (5)
1. a battery electric quantity equalizing circuit, for equalizing the electricity of the set of cells that N number of series-connected cell is constituted,
It is characterized in that: include N-1 battery balanced element circuit, gather the N of N number of battery both end voltage respectively
Individual voltage sampling circuit, auxiliary power module, single chip control module and driving module；Wherein k-th electricity
Pond balanced unit circuit the first port, the second port, the 3rd port connect respectively k-th battery positive pole,
K-th battery and the junction of K+1 battery, the negative pole of K+1 battery；K-th voltage sample
Circuit, the K+1 voltage sampling circuit gather k-th battery, the voltage at the K+1 battery two ends respectively,
And transmit to single chip control module, single chip control module output after calculating is corresponding drives signal extremely
Drive module, drive the driving signal of module output to be transmitted separately to the battery balanced element circuit of k-th, K
Individual battery balanced element circuit controls k-th battery discharge, the K+1 battery charging or k-th battery
Charging, the K+1 battery discharge so that k-th battery, the K+1 battery reach electric quantity balancing, its
In 1≤K≤N-1.
Battery electric quantity equalizing circuit the most according to claim 1, it is characterised in that: described battery balanced
Element circuit, all include the first switching tube, second switch pipe, the first diode, the second diode,
First electric capacity, the first inductance, the second inductance, the first diode inverse parallel on the first switching tube, the two or two
Pole pipe inverse parallel is on second switch pipe, and one end of the first inductance is connected with the positive pole of the first battery, the first electricity
Sense the other end and the positive pole of the first electric capacity and the first switching tube drain electrode be connected, the source electrode of the first switching tube with
The negative pole of the first battery, the positive pole of the second battery are connected, the source electrode of second switch pipe and the positive pole of the second battery
Being connected, the drain electrode of second switch pipe is connected with the negative pole of the first electric capacity, and the negative pole of the first electric capacity connects second simultaneously
One end of inductance；The other end of the second inductance and the negative pole of the second battery are connected；First voltage sensor sampling
Terminal voltage Ub1 of the first battery；Second voltage sensor is sampled terminal voltage Ub2 of the second battery.
Battery electric quantity equalizing circuit the most according to claim 1, it is characterised in that: described accessory power supply
Module include the first rectifier bridge, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first resistance, the second resistance,
For exporting the first voltage stabilizing chip of 15V DC voltage and for exporting the second voltage stabilizing core of 5V DC voltage
Sheet；Wherein the second rectifier bridge upper end, lower end connect the two ends of input power VAC, left end and the 5th electric capacity respectively
Positive pole connect, the connection of the negative pole of right-hand member and the 5th electric capacity；The positive pole of the 3rd electric capacity terminates the first voltage stabilizing chip
Input, the first voltage stabilizing chip output termination the second voltage stabilizing chip input, the second voltage stabilizing chip
Outfan is connected with the input of single chip control module and driving module；The earth terminal of the first voltage stabilizing chip with
Second resistance one end connects, the other end ground connection of the second resistance；One end of first resistance and the one of the second resistance
End connects, and another terminates the outfan of the first voltage stabilizing chip；4th electric capacity connects the input of the second voltage stabilizing chip,
Other end ground connection；The positive pole of the 5th electric capacity terminates the outfan of the second voltage stabilizing chip, other end ground connection.
Battery electric quantity equalizing circuit the most according to claim 1, it is characterised in that: described driving module
Including the driving signal judging circuit that 2 × (N-1) individual structures are identical, each driving signal judging circuit all wraps
Include the 3rd resistance, the 6th electric capacity, first and door, the first driving isolation circuit；Single chip control module exports
Control signal be connected to the 3rd resistance and first with an input of door；Another termination the of 3rd resistance
One with another input of door and one end of the 6th electric capacity, the other end ground connection of the 6th electric capacity；First with door
Output connects the first driving isolation circuit.
Battery electric quantity equalizing circuit the most according to claim 4, it is characterised in that: described driving is isolated
Circuit includes the first audion, the second audion, the 7th electric capacity, the first transformator, the 4th resistance；First
The base stage of audion connects the output of first and door with the base stage of the second audion after being connected；First audion
The emitter stage of emitter stage and the second audion is connected with one end of the 7th electric capacity after being connected, the collection of the first audion
Electrode connects the output of the first voltage stabilizing chip in auxiliary power module, the colelctor electrode of the second audion and the first transformation
One input of device be connected after ground connection, another of the 7th electric capacity terminates another input of the first transformator；
One outfan of the first transformator and one end of the 4th resistance are connected, the source of another termination main circuit switch pipe
Pole, the gate pole of another termination main circuit switch pipe of the 4th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095284.1U CN205489630U (en) | 2016-01-29 | 2016-01-29 | Group battery electric quantity equalizer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620095284.1U CN205489630U (en) | 2016-01-29 | 2016-01-29 | Group battery electric quantity equalizer circuit |
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| Publication Number | Publication Date |
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| CN205489630U true CN205489630U (en) | 2016-08-17 |
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ID=56671864
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| CN201620095284.1U Expired - Fee Related CN205489630U (en) | 2016-01-29 | 2016-01-29 | Group battery electric quantity equalizer circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
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2016
- 2016-01-29 CN CN201620095284.1U patent/CN205489630U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553026A (en) * | 2016-01-29 | 2016-05-04 | 华南理工大学 | Battery pack electricity equalization circuit and equalization method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |