CN103825322B - A kind of energy transfer type equalization charging circuit and method - Google Patents
A kind of energy transfer type equalization charging circuit and method Download PDFInfo
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- CN103825322B CN103825322B CN201410033600.8A CN201410033600A CN103825322B CN 103825322 B CN103825322 B CN 103825322B CN 201410033600 A CN201410033600 A CN 201410033600A CN 103825322 B CN103825322 B CN 103825322B
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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
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Abstract
The invention discloses a kind of energy transfer type equalization charging circuit and method.This circuit includes logical judgment and performs module, relay network, series-connected batteries, DC/DC bidirectional constant module and dc bus, relay network is connected with series-connected batteries, logical judgment is connected with relay network with performing module, and relay network is connected with dc bus also by DC/DC bidirectional constant module；The voltage of arbitrary joint accumulator in the acquisition series-connected batteries that logical judgment is real-time with performing module, judge whether this magnitude of voltage is in exception, controlling relay network according to this judged result and DC/DC bidirectional constant module carries out equalizaing charge, the transition energy in balancing procedure is temporarily stored in dc bus.The present invention exports to a certain joint accumulator can take energy constant current from dc bus, also can take energy from this accumulator constant current and return to dc bus, and whole circuit topology uses modular design philosophy, improves portfolio effect, adds the robustness of system.
Description
Technical field
The present invention relates to battery charging balancing technique field, in particular, particularly to a kind of energy transfer type equalizaing charge
Circuit and method.
Background technology
In recent years, energy storage technology development is very fast, can be by the most meritorious/idle control, and significant response load fluctuation ensures
Emphasis load emergency service under electric power system failure condition.Current wide application is that lead-acid battery is made with the power-supply system that UPS forms
For emergency power supply, but due to lead-acid battery volume energy than and weight energy ratio the least, it is impossible to accomplish " Large Copacity is removable ", the most do not adopt
With Intelligent battery management system so that shorter battery life.Along with the performance of lithium ion battery constantly promotes, its energy density is every year with 10%
The speed increase of-15%.The specific energy of lithium ion battery has reached 100-160Wh/kg at present, and energy density per unit volume has reached 240-350Wh
/ L, higher than cadmium nickel, Ni-MH battery, there is high power capacity, high voltage and the feature such as pollution-free, thus once just extensive by people of coming out
Pay close attention to.
But the monomer terminal voltage of general battery is the most relatively low, and the available capacity of whole set of cells can be by the shadow of minimum capacity cell
Ring.If the voltage differences between monomer can not get balancing in time and suppressing, this lack of uniformity constantly will be aggravated with the charge and discharge cycles of battery,
The work of whole set of cells can be affected eventually.
In the prior art, common equilibrium is based on passive equilibrium and active equalization mode.Wherein, passive equilibrium also referred to as energy
Dissipation type equalizes, and equalization efficiency is low and loss of energy.Traditional active equalization is used mostly inductance or electric capacity is the carrier that energy shifts, logical
Cross the switching controlling switch to realize energy transmission.Though this kind of active equalization mode has the advantages such as simple in construction, easy operation, but there is equilibrium electricity
Flow uncontrollable, the shortcomings such as portfolio effect is poor, and reliability is the highest.And existing balanced way can not realize modularized design, it is impossible to realize set of cells list
Equilibrium between unit, thus makes the cell number participating in equilibrium limited.Therefore, design and fabrication effective battery pack balancing system has
The strongest realistic meaning.
Summary of the invention
Do not equalize when present invention aims to existing charged by series storage battery or technical problem that portfolio effect is the best
And a kind of energy transfer type equalization charging circuit and method are provided.
In order to solve posed problems above, the technical solution used in the present invention is:
A kind of energy transfer type equalization charging circuit, including logical judgment with perform module, relay network, series-connected batteries,
DC/DC bidirectional constant module and dc bus, described relay network is connected with series-connected batteries, described logical judgment with perform module with
Relay network connects, and described relay network is connected with dc bus also by DC/DC bidirectional constant module；
The voltage of arbitrary joint accumulator in the acquisition series-connected batteries that described logical judgment is real-time with performing module, it is judged that this magnitude of voltage
Whether it is in exception, and carries out equalizaing charge according to this judged result control relay network and DC/DC bidirectional constant module, and equalize
During transition energy be temporarily stored in dc bus.
According to a preferred embodiment of the invention: described logical judgment includes interconnective main control module with performing module and gathers mould
Block, described acquisition module control input with relay network and DC/DC bidirectional constant module respectively is connected.
According to a preferred embodiment of the invention: described series-connected batteries includes multiple accumulator that both positive and negative polarity is sequentially connected in series；Described
Relay network includes the control switch being sequentially arranged on the both positive and negative polarity often saving accumulator of series-connected batteries, and the first and second single-pole double throws
Switch, the described control end controlling switch, the control end of the first and second single-pole double-throw switch (SPDT)s is all connected with acquisition module, and odd number controls
Switch also upper terminal with the first single-pole double-throw switch (SPDT) is connected, and even number controls to switch also upper terminal with the second single-pole double-throw switch (SPDT) and is connected, described
The lower terminal of the first single-pole double-throw switch (SPDT) is connected with the upper terminal of the second single-pole double-throw switch (SPDT), the lower terminal and first of described second single-pole double-throw switch (SPDT)
The upper terminal of single-pole double-throw switch (SPDT) connects, and the outfan of described first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT) is all two-way with DC/DC
Constant flow module connects.
According to a preferred embodiment of the invention: described main control module and acquisition module all use the STM32 series of ARM framework micro-
Processor, described main control module is STM32F107 microprocessor, and described acquisition module is STM32F103 microprocessor.
The present invention also provides for a kind of energy transfer type balanced charging method, comprises the following steps,
S1. the voltage of arbitrary joint accumulator in the acquisition series-connected batteries that logical judgment is real-time with performing module；
S2. with performing module, logical judgment judges whether this magnitude of voltage is in exception；
S3. logical judgment is carried out all according to the output control relay network judged and DC/DC bidirectional constant module with performing module
Weighing apparatus charges, and the transition energy in balancing procedure is temporarily stored in dc bus.
According to a preferred embodiment of the invention: described step S1 is specifically, use logical judgment and the acquisition module performing module
Real-time obtains the voltage of arbitrary joint accumulator in series-connected batteries；Described step S2 is specifically, use logical judgment and the master performing module
Control module judges whether the magnitude of voltage that acquisition module is collected is in exception；Described step S3 is specifically, the adopting of logical judgment and execution module
Collection module controls relay network according to the judged result of main control module and DC/DC bidirectional constant module carries out equalizaing charge, and equalized
Transition energy in journey is temporarily stored in dc bus.
According to a preferred embodiment of the invention: the equalizaing charge in described step S3 uses in same time equalization series electric power storage
The mode of the timesharing equilibrium of the one joint accumulator of Chi Zuzhong.
According to a preferred embodiment of the invention: described equalizaing charge includes that the electric current extracting high-voltage state accumulator is to reduce its voltage
Value reduces the SOC value of this accumulator, or accumulator Celli of low-voltage is poured into electric current makes its voltage raise.
According to a preferred embodiment of the invention: after timesharing balanced way completes charging, described relay network disconnects charge circuit,
And if logical judgment and execution module judge that the pressure reduction of the ceiling voltage between single-unit accumulator and minimum voltage beyond preset value, then controls control and continues
Appliance network and DC/DC bidirectional constant module proceed equalizaing charge.
According to a preferred embodiment of the invention: described equalizaing charge includes a certain joint accumulator is carried out buck or boost operation,
Wherein, a certain joint accumulator is carried out reduced pressure operation method particularly includes:
When a certain joint accumulator is odd number, the detailed process of its equalizaing charge includes, first, is closed this joint by acquisition module
Two control switches that accumulator anode and cathode is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to upper terminal, simultaneously switch off remaining
Control switch, and by acquisition module, DC/DC bidirectional constant module is placed in the pattern to dc bus filling electric current；
When a certain joint accumulator is even number, the detailed process of its equalizaing charge includes, first, is closed this joint by acquisition module
Two control switches that accumulator anode and cathode is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to lower terminal, simultaneously switch off remaining
Control switch, and by acquisition module, DC/DC bidirectional constant module is placed in the pattern to dc bus filling electric current；
A certain joint accumulator is carried out boost operations method particularly includes:
When a certain joint accumulator is odd number, the detailed process of its equalizaing charge includes, first, is closed this joint by acquisition module
Two control switches that accumulator anode and cathode is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to upper terminal, simultaneously switch off remaining
Control switch, and by acquisition module, DC/DC bidirectional constant module is placed in the pattern to this joint electric power storage basin irrigation electric current；
When a certain joint accumulator is even number, the detailed process of its equalizaing charge includes, first, is closed this joint by acquisition module
Two control switches that accumulator anode and cathode is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to lower terminal, simultaneously switch off remaining
Control switch, and by acquisition module, DC/DC bidirectional constant module is placed in the pattern to this joint electric power storage basin irrigation electric current.
Compared with prior art, the beneficial effects of the present invention is: DC/DC bidirectional constant module can be from when equilibrium for the present invention
Dc bus takes energy constant current and exports to a certain joint accumulator, also can take energy from this accumulator constant current and return to dc bus, and whole circuit is opened up
Flutterring the modular design philosophy of employing, battery capacity is changeable, can carry out reasonable regulations according to actual needs, improve portfolio effect,
Add the robustness of system.
Accompanying drawing explanation
Fig. 1. for the topology diagram of the energy transfer type equalization charging circuit of the present invention.
Fig. 2 is the flow chart of the energy transfer type balanced charging method of the present invention.
Fig. 3 is the workflow diagram of the energy transfer type equalizaing charge of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Refering to shown in Fig. 1, the present invention provides a kind of energy transfer type equalization charging circuit, including logical judgment with perform module 301,
Relay network 302, series-connected batteries 303, DC/DC bidirectional constant module 304 and dc bus 305, relay network 302 with
Series-connected batteries 303 connects, and logical judgment is connected with relay network 302 with performing module 301, and relay network 302 is also by DC
/ DC bidirectional constant module 304 is connected with dc bus 305；The acquisition series-connected batteries 303 that logical judgment is real-time with performing module 301
In the voltage of arbitrary joint accumulator, it is judged that whether this magnitude of voltage is in exception, and controls relay network 302 and DC/ according to this judged result
The transition energy that DC bidirectional constant module 304 is carried out in equalizaing charge, and balancing procedure is temporarily stored in dc bus 305.
Relay network 302 includes that the control being sequentially arranged on the both positive and negative polarity of often joint accumulator Celli of series-connected batteries 303 is opened
Close Kj and the first and second single-pole double-throw switch (SPDT)s, control the control end of switch Kj, the control end of the first and second single-pole double-throw switch (SPDT)s all with
Acquisition module 32 connects, and odd number controls the switch Kj upper terminal also with the first single-pole double-throw switch (SPDT) and is connected, and even number controls switch Kj
The also upper terminal with the second single-pole double-throw switch (SPDT) is connected, and the lower terminal of described first single-pole double-throw switch (SPDT) connects with the upper terminal of the second single-pole double-throw switch (SPDT)
Connecing, the lower terminal of described second single-pole double-throw switch (SPDT) is connected with the upper terminal of the first single-pole double-throw switch (SPDT), described first single-pole double-throw switch (SPDT) and second
The outfan of single-pole double-throw switch (SPDT) is all connected with DC/DC bidirectional constant module 304, and wherein, i and i is positive integer.
In the present embodiment, series-connected batteries 303 is selected to include multiple accumulator Celli that both positive and negative polarity is sequentially connected in series, i.e.
Cell1-cell6, they use the series system that both positive and negative polarity is connected, at this moment control the most individual seven of the quantity of switch, i.e. K1 to K7, and the first He
Second single-pole double-throw switch (SPDT) is respectively adopted K8 and K9 and represents.
In the present invention, logical judgment includes interconnective main control module 31 and acquisition module 32 with performing module 301, described
Acquisition module 32 control input with relay network 302 and DC/DC bidirectional constant module 304 respectively is connected.
The most concrete, it is double with the control switch K1-K7 on series-connected batteries 303 and hilted broadsword that a row of acquisition module 32 controls end
Throw switch K8, k9 are connected, and two control ends are connected with DC/DC bidirectional constant module 304 below, the lower terminal of single-pole double-throw switch (SPDT) K8
Being connected with the upper terminal of single-pole double-throw switch (SPDT) K9, the lower terminal of K9 is connected with the upper terminal of K8, and the positive pole of cell1 is connected with control switch K1,
Negative pole is connected with control switch K2, and by that analogy, the positive pole of accumulator cell6 is connected with control switch K6, and negative pole is connected with control switch K7.Odd number
The control switch of class, as another section of K1, K3, K5, K7 etc. is connected with the upper terminal of single-pole double-throw switch (SPDT) K8, the control of even number class is opened
Closing, as another section of K2, K4, K6 etc. is connected with the upper terminal of single-pole double-throw switch (SPDT) K9, the control being connected to series-connected batteries 303 is opened
Closing such as K1-K7, single-pole double-throw switch (SPDT) K8, k9, their control end is connected with acquisition module 32.And it is connected to series-connected batteries 303
On control switch, such as K1-K7, and single-pole double-throw switch (SPDT) K8, K9 all use relay to realize.Main control module 31 is only according to gathering mould
The real-time series-connected batteries 303 voltage signal V that block 32 collects makes logical judgment, and acquisition module 32 is both responsible for uploading series connection in real time
Accumulator battery 303 information, is responsible for again performing the break-make of relay network 302.
Described main control module 31 and acquisition module 32 all use the STM32 series microprocessor of ARM framework, described master control mould
Block 31 is STM32F107 microprocessor, and described acquisition module 32 is STM32F103 microprocessor, owing to STM32 is based on ARM
High performance-price ratio MCU of framework, its processing speed, up to up to a hundred megahertzs, can allow system meet higher requirement of real-time.
In the present invention, volume DC/DC bidirectional constant module 304 should select, according to concrete application according to the concrete application of side circuit
Can select the general module on market, it is possible to the designed, designed because of needs, its power selection depends on the dc bus ceiling voltage of system, this
Series-connected batteries 303 rated voltage in embodiment is 384V, and ceiling voltage can reach 450V, and the equilibrium power supply selected for this example is
Power 200W, 450V turn the DC/DC bidirectional constant module of 4V.
The charging circuit of the present invention uses timesharing balance policy, is switched accordingly by relay gate network 302, it is achieved right
A certain joint accumulator buck or boost operates, such as, accumulator cell1 is realized decompression operation, and first close a switch K1 and K2, and hilted broadsword is double
Throw switch K8, K9 get to upper terminal, disconnect switch K3-K7, by acquisition module 32 DC/DC bidirectional constant module 304 is placed in
Dc bus fills current-mode, and such accumulator cell1 will be discharged in dc bus with constant electric current a such as 50A；To electric power storage
Pond cell1 realizes boost operations, control switch arrange constant in the case of, by acquisition module 32 by DC/DC bidirectional constant module 304
Being placed in electric power storage basin irrigation current-mode, it is constant with one to accumulator cell1 that such DC/DC bidirectional constant module 304 takes energy from dc bus
Electric current such as 50A pour into.Operation to accumulator cell2 is also the same with accumulator cell1, is only intended to single-pole double-throw switch (SPDT) K8, K9
Get to lower terminal.The equalization operation method of other accumulator is similar.The accumulator gating of odd number class is arranged as accumulator cell1, even
The accumulator gating of number class is arranged as accumulator cell2.
Owing to logical judgment includes main control module 31 and 32 two modules of acquisition module with performing module 301.Acquisition module 32 is negative
Duty gathers the real time information of set of cells, including voltage V, electric current I, temperature T etc..And these real time information very first times are uploaded to master control mould
Block 31, series-connected batteries 303 real time information that main control module is uploaded according to acquisition module 32, by decision logic, issue operational order to
Acquisition module 32, and gated certain joint accumulator in series-connected batteries 303 by the control end of acquisition module 32 by relay network 302, with
At present issue a command to DC/DC bidirectional constant module 304, determine its constant current direction, can rapidly the accumulator selected be realized boosting or fall
Pressure equilibrium, dc bus 305 here serves as the role that energy transition is temporary, it is achieved the balance idea described in system.Main control module therein
31 are responsible for process information, and acquisition module 32 is responsible for transmission information and performs corresponding operating, and such pipeline processes is advantageously implemented modularity and expands
Hold, main control module i.e. can be allowed to hang multiple acquisition module 32 for 31 times, improve the robustness of system.
Shown in Fig. 2, a kind of energy transfer type balanced charging method that the present invention provides, comprise the following steps,
The first step. the voltage of arbitrary joint accumulator in the acquisition series-connected batteries 303 that logical judgment is real-time with performing module 301, also
Be exactly use logical judgment and the acquisition module 32 performing module 301 real-time obtain the voltage of arbitrary joint accumulator in series-connected batteries 303；
Second step. with performing module 301, logical judgment judges whether this magnitude of voltage is in exception, namely use logical judgment and execution
The main control module 31 of module 301 judges whether the magnitude of voltage that acquisition module 32 is collected is in exception；
3rd step. logical judgment and execution module 301 are according to the two-way perseverance of output control relay network 302 and DC/DC judged
Flow module 304 carries out the transition energy in equalizaing charge, and balancing procedure and is temporarily stored in dc bus 305, namely logical judgment and execution
The acquisition module 32 of module 301 controls relay network 302 and DC/DC bidirectional constant module 304 according to the judged result of main control module 31
Carry out equalizaing charge.
It is in same time equalization series accumulator battery 303 one joint accumulator described above that equalizaing charge therein uses
Timesharing equilibrium mode.And equalizaing charge includes that the electric current extracting high-voltage state accumulator is to reduce its magnitude of voltage to reduce this accumulator Celli
SOC value, or accumulator Celli of low-voltage poured into electric current make its voltage raise.
Concrete, after timesharing balanced way completes charging, relay network 302 disconnects charge circuit, and if logical judgment with
Execution module 301 judges that the pressure reduction of the ceiling voltage between single-unit accumulator Celli and minimum voltage beyond preset value, then controls relay net
Network 302 and DC/DC bidirectional constant module 304 proceeds equalizaing charge.
Refering to shown in Fig. 3, for the specific works flow process figure of charging circuit provided by the present invention:
The first step: after system electrification, first turns on the charger on series-connected batteries 303, charges to series-connected batteries 303,
Now accumulator is in overall charged state.
Second step: gathered the voltage V1-Vn of n joint accumulator by acquisition module 32, and be uploaded to main control module 31 immediately,
N voltage signal of reception is stored in Flash by main control module.
3rd step: main control module 31 call voltage comparison function by collect voltage Vi (i=1 ..., n) with reference voltage V I
Relatively.If existing at least one voltage Vi is more than V I, illustrates that the voltage of an at least batteries in set of cells rises too fast, and just which is beyond that
Often scope, tackles it and carries out blood pressure lowering process of discharging.
4th step: now charger normally works, it is ensured that remaining battery charges normal, control module issues a command to for 31 times gather mould
Block 32, acquisition module closes by control switch Kj with K (j+1) at battery celli two ends by controlling end, if at this moment j is odd number, hilted broadsword is double
Throw switch K8, K9 close upper terminal；If j is even number, single-pole double-throw switch (SPDT) K8, K9 being closed lower terminal, rest switch disconnects without exception.
5th step: acquisition control module issues a command to DC/DC bidirectional constant module 304 for 32 times so that it is be placed in extraction battery electricity
Flow to dc bus mode.So accumulator celli just by constant-current discharge to dc bus, at this moment acquisition module 32 Real-time Collection accumulator celli
Voltage Vi, and be uploaded to main control module 31.Main control module calls voltage ratio is compared with the function ratio size compared with V I Yu Vi, if Vi is big
In V I, illustrate that the voltage of accumulator celli is the most too high, then it is continued balanced discharge；If Vi is less than V I, illustrate that accumulator celli is located
In normal condition, then should turn off equilibrium loop, and return to second step and repeat above flow process.
6th step: in above-mentioned 3rd step, main control module by call voltage ratio relatively function ratio relatively V I Yu Vi (i=1 ..., n)
After size, if battery tension Vi (i=1 ..., n) it is both less than reference voltage V I, illustrates that accumulator battery is in normal charging condition.
7th step: main control module 31 call voltage comparison function by collect voltage Vi (i=1 ..., n) with reference voltage V II
Relatively.If accumulator battery voltage Vi (i=1 ..., n) there is at least one and be not more than VII, illustrate that accumulator battery is in normal pressure-increasning state, and
Not close to full state, and continue back at second step, repeat above flow process.
If by voltage ratio relatively function ratio relatively voltage Vi (i=1 ..., n) with V II after, find accumulator battery all cell voltages Vi (i
=1 ..., n) it is both greater than reference voltage V II, illustrates that this group storage battery is close to all electricity in charging complete state, i.e. this group storage battery group
The SOC in pond is the most close to 1.
8th step: turn off charger, stops overall charging, and this step will make electricity according to the further balancing battery of pressure differential condition
Pond group reaches optimal poised state, the real-time voltage V1-Vn gathering and storing before is carried out size sequence, finds voltage max Vk
With voltage minimum Vp, main control module 31 calls voltage comparison function by the difference of voltage max Vk and voltage minimum Vp and reference pressure
Difference Vth compares.
If the difference of voltage max Vk and voltage minimum Vp is less than with reference to pressure reduction Vth, it is believed that each electricity in integral battery door group
Cell voltage difference in balancing error allowed band, then charging complete.
If the difference of voltage max Vk and voltage minimum Vp is bigger than with reference to pressure reduction Vth, illustrate in set of cells between each battery
Pressure reduction is excessive, should be reduced this difference by Balance route by internal adaptive is whole.
9th step: acquisition module 32, by controlling relay network 302, gates the equilibrium loop of accumulator cellp, wherein, very
It is consistent with cell1 with the state of single-pole double-throw switch (SPDT) that the accumulator of number class controls switch；The accumulator of even number class controls switch and single-pole double-throw switch (SPDT)
State consistent with cell2.
Tenth step: acquisition control module issues a command to DC/DC bidirectional constant module 304 for 32 times, allows it be placed in from dc bus
305 take energy constant current is input to the mode of accumulator, and now other battery in set of cells is in discharge condition, and their energy proceeds to direct current
Bus also feeds back to battery cellp by DC/DC bidirectional constant module 304.
11st step: main control module 31 opens the intervalometer of inside, and waiting timer timing terminates, is then powered off equalizing loop,
And continue back at second step, repeat above flow process.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention being not restricted to the described embodiments, its
The change made under his any spirit without departing from the present invention and principle, modify, substitute, combine, simplify, all should be the displacement of equivalence
Mode, within being included in protection scope of the present invention.
Claims (3)
1. an energy transfer type equalization charging circuit, it is characterised in that: include logical judgment with perform module (301), relay network (302),
Series-connected batteries (303), DC/DC bidirectional constant module (304) and dc bus (305), described relay network (302) and accumulator of connecting
Group (303) connects, and described logical judgment is connected with relay network (302) with performing module (301), and described relay network (302) is also by DC
/ DC bidirectional constant module (304) is connected with dc bus (305)；Described logical judgment with perform module (301) real-time acquisition and connect accumulator
The voltage of arbitrary joint accumulator in group (303), it is judged that whether this magnitude of voltage is in exception, and controls relay network (302) according to this judged result
The transition energy carried out in equalizaing charge, and balancing procedure with DC/DC bidirectional constant module (304) is temporarily stored in dc bus (305)；
Described logical judgment includes interconnective main control module (31) and acquisition module (32) with performing module (301), described acquisition module (32) point
It is not connected with the control input of relay network (302) and DC/DC bidirectional constant module (304)；
Described series-connected batteries (303) includes multiple accumulator (Celli) that both positive and negative polarity is sequentially connected in series；Described relay network (302) includes setting successively
Control switch (Kj) on the both positive and negative polarity of often joint accumulator (Celli) of series-connected batteries (303), and the first and second single-pole double-throw switch (SPDT)s,
The described control end controlling switch (Kj), the control end of the first and second single-pole double-throw switch (SPDT)s is all connected with acquisition module (32), and odd number control
System switch (Kj) also upper terminal with the first single-pole double-throw switch (SPDT) is connected, even number control to switch (Kj) also with the upper terminal of the second single-pole double-throw switch (SPDT)
Connecting, the lower terminal of described first single-pole double-throw switch (SPDT) is connected with the upper terminal of the second single-pole double-throw switch (SPDT), under described second single-pole double-throw switch (SPDT)
The upper terminal of terminal and the first single-pole double-throw switch (SPDT) connects, and the outfan of described first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT) is all and DC
/ DC bidirectional constant module (304) connects.
Energy transfer type equalization charging circuit the most according to claim 1, it is characterised in that: described main control module (31) and acquisition module (32)
All using the STM32 series microprocessor of ARM framework, described main control module (31) is STM32F107 microprocessor, described acquisition module
(32) it is STM32F103 microprocessor.
3. an energy transfer type balanced charging method, it is characterised in that: the method comprises the following steps,
S1. the voltage of arbitrary joint accumulator in the acquisition series-connected batteries (303) that logical judgment is real-time with performing module (301)；
S2. with performing module (301), logical judgment judges whether this magnitude of voltage is in exception；
S3. logical judgment and execution module (301) are according to the output control relay network (302) judged and DC/DC bidirectional constant module (304)
Carry out the transition energy in equalizaing charge, and balancing procedure to be temporarily stored in dc bus (305)；
Described step S1 is specifically, use logical judgment and the real-time acquisition series-connected batteries (303) of acquisition module (32) performing module (301)
In the voltage of arbitrary joint accumulator；Described step S2 is specifically, use logical judgment and main control module (31) the judgement collection performing module (301)
Whether the magnitude of voltage that module (32) is collected is in exception；Described step S3 is specifically, the acquisition module of logical judgment and execution module (301)
(32) control relay network (302) according to the judged result of main control module (31) and DC/DC bidirectional constant module (304) carries out equalizaing charge, and
And the transition energy in balancing procedure is temporarily stored in dc bus (305)；
Equalizaing charge in described step S3 uses the timesharing of joint accumulator (Celli) in same time equalization series accumulator battery (303)
The mode of equilibrium:
Described equalizaing charge include the electric current extracting high-voltage state accumulator to reduce its magnitude of voltage to reduce the SOC value of this accumulator (Celli),
Or the accumulator (Celli) of low-voltage is poured into electric current make its voltage raise；
Timesharing balanced way complete charging after, described relay network (302) disconnect charge circuit, and if logical judgment with perform module (301)
Judge that the pressure reduction of the ceiling voltage between single-unit accumulator (Celli) and minimum voltage beyond preset value, then controls relay network (302) and DC
/ DC bidirectional constant module (304) proceeds equalizaing charge；
Described equalizaing charge includes a certain joint accumulator is carried out buck or boost operation,
Wherein, a certain joint accumulator is carried out reduced pressure operation method particularly includes:
When a certain joint accumulator is odd number, the detailed process of its equalizaing charge includes, first, is closed this joint electric power storage by acquisition module (32)
Two control switches that pond both positive and negative polarity is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to upper terminal, simultaneously switch off remaining control
Switch, and by acquisition module (32), DC/DC bidirectional constant module (304) is placed in the pattern filling electric current to dc bus (305)；
When a certain joint accumulator is even number, the detailed process of its equalizaing charge includes, first, is closed this joint electric power storage by acquisition module (32)
Two control switches that pond both positive and negative polarity is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to lower terminal, simultaneously switch off remaining control
Switch, and by acquisition module (32), DC/DC bidirectional constant module (304) is placed in the pattern filling electric current to dc bus (305)；
A certain joint accumulator is carried out boost operations method particularly includes:
When a certain joint accumulator is odd number, the detailed process of its equalizaing charge includes, first, is closed this joint electric power storage by acquisition module (32)
Two control switches that pond both positive and negative polarity is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to upper terminal, simultaneously switch off remaining control
Switch, and by acquisition module (32), DC/DC bidirectional constant module (304) is placed in the pattern to this joint electric power storage basin irrigation electric current；
When a certain joint accumulator is even number, the detailed process of its equalizaing charge includes, first, is closed this joint electric power storage by acquisition module (32)
Two control switches that pond both positive and negative polarity is adjacent；Then, the first and second single-pole double-throw switch (SPDT)s are all got to lower terminal, simultaneously switch off remaining control
Switch, and by acquisition module (32), DC/DC bidirectional constant module (304) is placed in the pattern to this joint electric power storage basin irrigation electric current.
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| CN104539017B (en) * | 2014-12-31 | 2017-02-22 | 深圳先进技术研究院 | Power battery pack balancing system and method |
| CN109217399A (en) * | 2017-07-05 | 2019-01-15 | 周锡卫 | A kind of two-way active equalization battery management system and control method based on multiple-unit sorting |
| CN109217400B (en) * | 2017-07-05 | 2024-04-09 | 周锡卫 | Control method of double-path unidirectional active equalization storage battery management system based on multi-unit sorting |
| CN108199445A (en) * | 2018-02-05 | 2018-06-22 | 江门市敏华电器有限公司 | The active equalization circuit and method of a kind of series-connected batteries |
| CN108448713A (en) * | 2018-05-23 | 2018-08-24 | 深圳电丰电子有限公司 | A kind of intelligence energy storage type emergency power system |
| DE102019200510A1 (en) * | 2019-01-16 | 2020-07-16 | Audi Ag | Measuring arrangement, high-voltage battery, motor vehicle and method for determining a complex impedance |
| CN109980741A (en) * | 2019-04-10 | 2019-07-05 | 成都极空科技有限公司 | A kind of active equalization system of battery pack and its working method based on super capacitor |
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| CN101938152B (en) * | 2010-09-01 | 2012-08-22 | 华南理工大学 | Power battery pack equalizing circuit and method thereof |
| CN103199589B (en) * | 2013-04-12 | 2014-12-10 | 哈尔滨工业大学 | Lithium ion battery pack modularization fast equalization circuit and equalizing method |
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