CN107275694A - Have active equalization and passive distributed storage battery balancer and method in a balanced way concurrently - Google Patents
Have active equalization and passive distributed storage battery balancer and method in a balanced way concurrently Download PDFInfo
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- CN107275694A CN107275694A CN201710607506.2A CN201710607506A CN107275694A CN 107275694 A CN107275694 A CN 107275694A CN 201710607506 A CN201710607506 A CN 201710607506A CN 107275694 A CN107275694 A CN 107275694A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Active equalization and passive distributed storage battery balancer and method in a balanced way are had concurrently the invention provides one kind, and the battery equalisation device includes master controller and multiple monitor terminals for being connected respectively to master controller；The master controller includes the first control unit, the first communication unit；Each monitor terminal includes the second control unit, the second communication unit, detection unit and balanced unit；Wherein：The detection unit is used for the performance parameter for detecting each section cell in corresponding battery group；First control unit makes correspondence monitor terminal perform passive equalization operation when the average state-of-charge of any battery group is less than the first preset value, correspondence monitor terminal is performed active equalization operation when the state-of-charge of any section cell is less than the average state-of-charge of battery group.The structure that the present invention passes through master controller and multiple monitor terminals so that the structure of balancer is safer, easier for installation, balanced more efficient.
Description
Technical field
The present invention relates to battery management and area of maintenance, active equalization is had concurrently and passive more specifically to one kind
Battery equalisation device and method in a balanced way.
Background technology
Large-scale batteries have widely and important application in fields such as electric power, communications.For example, power system
Operation power, base station communication apparatus power supply, data center module uninterruptible power system (UPS) of transformer station etc., it is all a large amount of to use storage
Battery pack is used as backup power system and the power supply of straight-flow system.Particularly in backup power system or communication base station direct current
In the system of source, all need to use plurality of groups of storage batteries, there are 54 sections to sections up to a hundred per group storage battery.
Objective difference between the cell caused due to battery manufacturing process, will cause to use in the battery life-cycle
In cycle, in the case of total voltage is eligible, also there is difference in the state between cell, is embodied in voltage, capacity
The lack of uniformity of state.Batteries now easily occur overcharging in use with charge less phenomenon, and be likely to result in shape
The worst battery failure of state or overtension it is hot unbalance, cause potential safety hazard to backup power system, or even occur great
Accident of power supply.
At present, single-unit battery dispatch from the factory design life-span be 8 to 10 years, in actual use because battery makes in groups
With, over time, because unbalanced phenomena occurs in odjective cause between single-unit battery, whole group battery making generally
It can only achieve with the life-span 5 years or so, the battery pack more than 5 years, this batch of battery will be replaced all.Further, since fortune
Dimension condition and Cost Problems, the unbalanced problem of battery do not obtain concern in time and processing, so accelerate the storage of state difference
The aging of battery is turned pale, and causes the reduction of battery service efficiency, is generated great assets and is wasted, from saving, energy-conservation, ring
Adversely affected from the aspect of guarantor.
To improve the service life of batteries, balanced management can be carried out to battery.For example fallen behind by artificial screening
Battery or overtension battery, carry out single-unit discharge and recharge, make up to set voltage level.But manual equalization workload
Greatly, practical operation is got up inconvenience, and feasibility is not very high.
In addition, can also lead to installation balancing equipment, semi-automatic or automatic equalization is realized.This kind of balancing equipment divides from structure
For centralized and distributed two kinds.In wherein centralized balancing equipment, all functional units are all designed together, synthesize a master
Machine equipment, there is concentration channel interface, from each pathway lead, accesses the both positive and negative polarity of each single battery；Distributed balancing equipment
Equalizing circuit is individually made to a package module, every batteries two ends are directly installed on, passes through independent order wire and main frame
Communication, realizes Balance route.At present, either centralized balancing equipment or distributed balancing equipment, the equilibrium of its input
Line is connected on total both positive and negative polarity of battery pack, and the equilibrium line of output end is then connected on the both positive and negative polarity of correspondence cell, by monomer electricity
Pressure detection, and carry out low current charge, to raise monomer voltage, i.e., so-called active equalization to measuring the relatively low battery of voltage；It is right
The battery for measuring overtension carries out low discharging current, drags down monomer battery voltage, i.e., so-called passive equilibrium, individual whole to reach
The purpose of all battery voltage balanceds of battery pack.
However, above-mentioned centralized balancer needs a large amount of tediously long wirings when mounted, and when breaking down, circuit
Investigation is difficult, as long as there is equalizing circuit failure all the way, whole equipment can not just be used.For the more battery of battery number
Group, single treatment battery number is limited, and overall time for balance is inefficient.
For above-mentioned distributed balancer, equalizing circuit module need to be installed to every batteries, although wiring is than centralization
Balancer is convenient, but each equalizing circuit module needs to use independent order wire wiring, and if communication line have at one
Disconnect, then whole communication line just disconnects.
And in above-mentioned balancer, whole batteries rely only on voltage to judge to realize single active equalization, but
Some battery virtual voltages are unable to reach the higher battery voltage level of monomer voltage in this group, although electric discharge can be each monomer electricity
Cell voltage is pulled down to consistent level, but after follow-up whole group is filled, due to battery objective difference, will occur newly again not
Isostasy.
In addition, either centralized balancing equipment or distributed balancing equipment, its equalizing circuit input equilibrium line connect
Enter total both positive and negative polarity of whole battery pack, output end equilibrium line access single battery, in High Pressure Difference state, if module appearance is short
The failures such as road, will make cell be directly accessed high pressure and damage, so as to cause security incident.
The content of the invention
The technical problem to be solved in the present invention is, connects up the problem of cumbersome, function is single for above-mentioned balancer, carries
Active equalization and passive distributed storage battery balancer and method in a balanced way are had concurrently for one kind.
The technical scheme of present invention solution above-mentioned technical problem is to provide one kind and has active equalization concurrently with passively dividing in a balanced way
Cloth battery equalisation device, the battery is the battery pack being in series by more piece cell, the battery equalisation
Device includes master controller and multiple monitor terminals for being connected respectively to master controller, and the multiple monitor terminal is connected respectively
To multiple battery groups, each battery group includes the cell that multi-section serial is connected；The master controller includes the first control
Unit processed, the first communication unit；Each monitor terminal include the second control unit, the second communication unit, detection unit and
Balanced unit；Wherein：
The detection unit detects corresponding electricity when monitoring terminal is in running order under the control of the second control unit
The performance parameter of each section cell in the group of pond；
First control unit, each battery group is obtained for being calculated according to the performance parameter of each section cell
Average state-of-charge and each section cell state-of-charge, and be less than in the average state-of-charge of any battery group
During the first preset value, passive equalization instruction is sent, in any section cell to the monitor terminal for being connected to the battery group
State-of-charge is less than the average state-of-charge of the battery group where the section cell and the battery group is in Working mould
During formula, active equalization instruction is sent to corresponding monitor terminal；
First communication unit and the second communication unit, for realizing the electricity of the monomer between monitor terminal and master controller
The transmission of the performance parameter in pond, passive equalization instruction and active equalization instruction；
Second control unit, the monitor terminal where for making when receiving passive equalization instruction enters dormancy mould
Formula, the monitor terminal at place are in mode of operation and balanced unit is carried out equalization operation when receiving active equalization instruction；
The balanced unit, for from battery group power taking and low for state-of-charge under the control of the second control unit
In the cell charging of the average state-of-charge of battery group.
It is of the present invention have concurrently active equalization with passive distributed storage battery balancer in a balanced way, the monitoring
Terminal includes power supply unit, and said supply unit is connected to the feeder ear of corresponding battery group via power switch；It is described
Detection unit is connected via multiple detection switch with each section cell in corresponding battery group respectively；The detection unit
In the case where monitor terminal is in running order, the detection switch at each section cell two ends is set to close to detect corresponding list successively
The performance parameter of body battery；Second control unit makes the monitor terminal at place enter dormancy by disconnecting the power switch
Pattern.
It is of the present invention have concurrently active equalization with passive distributed storage battery balancer in a balanced way, the monitoring
Terminal includes timer, and the timer is sent out in the case where monitor terminal is in park mode every preset time to the power switch
Continuity signal is sent, the monitor terminal is entered mode of operation.
It is of the present invention have concurrently active equalization with passive distributed storage battery balancer in a balanced way, cell
Performance parameter include cell voltage, battery Ohmic resistance, battery polarization internal resistance and battery polarization electric capacity；The master controller
First control unit calculates the health status of each batteries according to the performance parameter of each section cell, and single in any section
The health status of body battery sends alarm signal when being less than the second preset value.
It is of the present invention have concurrently active equalization with passive distributed storage battery balancer in a balanced way, cell
Performance parameter include battery temperature, the first control unit of the master controller exceedes in the battery temperature of any cell
The monitor terminal for making to be connected to the battery group where the cell during preset temperature enters park mode.
The present invention also provides one kind and has active equalization and passive distributed storage battery equalization methods, the electric power storage in a balanced way concurrently
Pond is that all cells in the battery pack being in series by more piece cell, the battery are located at multiple batteries respectively
Group, and each battery group has the cell that multi-section serial is connected respectively；Each battery group respectively with
One corresponding monitor terminal connection, and each monitor terminal is connected respectively to master controller；It the described method comprises the following steps：
Each monitor terminal detects the performance ginseng of each section cell of the battery in the operational mode, respectively
Number；
Master controller calculates the average charged shape for obtaining each battery group according to the performance parameter of each section cell
State, and when the average state-of-charge of any battery group is less than the first preset value, it is whole to the monitoring for being connected to the battery group
End sends passive equalization instruction, and the monitor terminal performs the passive equalization instruction and enters park mode；
Master controller calculates the state-of-charge of each section cell according to the performance parameter of each section cell, in office
Average state-of-charge and the battery of the state-of-charge less than the battery group where the section cell of one section cell
When group is in mode of operation, sending active equalization instruction to corresponding monitor terminal makes the monitor terminal small from the battery
Group power taking and the cell charging for state-of-charge less than the average state-of-charge of battery group.
It is of the present invention have concurrently active equalization with passive distributed storage battery equalization methods in a balanced way, methods described
Including：The monitor terminal in the hibernation mode, enters mode of operation every preset time and detects every in correspondence work group
The performance parameter of one section cell.
It is of the present invention have concurrently active equalization with passive distributed storage battery equalization methods in a balanced way, cell
Performance parameter include cell voltage, battery Ohmic resistance, battery polarization internal resistance and battery polarization electric capacity；Methods described includes：
The master controller calculates the health status of each batteries according to the performance parameter of each section cell, and
The health status of any section cell sends alarm signal when being less than the second preset value.
It is of the present invention have concurrently active equalization with passive distributed storage battery equalization methods in a balanced way, cell
Performance parameter include battery temperature, the master controller any cell battery temperature exceed preset temperature when make company
The monitor terminal for the battery group being connected to where the cell enters park mode.
It is of the present invention have concurrently active equalization with passive distributed storage battery equalization methods in a balanced way, the monitoring
Terminal is connected to the feeder ear of correspondence battery group via power switch, and the monitor terminal is respectively via multiple detection switch
It is connected to each section cell in correspondence battery group；The monitor terminal makes each section monomer in working condition successively
The detection switch at battery two ends closes to detect the performance parameter of corresponding cell；The monitor terminal is described by disconnecting
Power switch enters park mode.
The present invention's has active equalization and passive distributed storage battery balancer and method in a balanced way concurrently, passes through multiple prisons
Control terminal detects the performance parameter of the single battery in multiple battery groups respectively, and by master controller obtain battery group and
The state-of-charge of single battery, so as to carry out passive equilibrium treatment to respective battery group and be carried out to corresponding cell
Active equalization processing.
The invention provides a kind of structure is safer, easier for installation, balanced significantly more efficient battery balanced management
Apparatus and method, solve the unbalanced problem of battery of large-scale use battery (group), are finally reached in week battery life-cycle
In phase, extend battery, reduce the waste unnecessary to battery, from power supply safety, cost-effective, energy-conserving and environment-protective,
All it is important in inhibiting in economic benefit.
The present invention, without extra communication line, can greatly reduce order wire and connect also by power-line carrier communication
Line is operated, and has further simplified installation process, and single monitor terminal, which breaks down, nor affects on the communication of other monitor terminals, and
And be easy to position out of order monitor terminal from the communications status of each monitor terminal, maintenance is changed convenient.
Brief description of the drawings
Fig. 1 is that the present invention has active equalization and the signal of passive distributed storage battery balancer embodiment in a balanced way concurrently
Figure.
Fig. 2 is the schematic diagram of main control unit and monitor terminal in Fig. 1.
Fig. 3 is detection unit and the connection diagram of battery group in Fig. 1.
Fig. 4 is balanced unit and the connection diagram of battery group in Fig. 1.
Fig. 5 is that the present invention has active equalization and the signal of passive distributed storage battery equalization methods embodiment in a balanced way concurrently
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As Figure 1-3, it is that the present invention has active equalization and the passive implementation of distributed storage battery balancer in a balanced way concurrently
The schematic diagram of example, the battery equalisation device has active equalization concurrently and passive balanced, existing battery can be managed with
O＆M.Above-mentioned battery is the battery equalisation device bag in the battery pack being in series by more piece cell, the present embodiment
Master controller 3 and multiple monitor terminals 2 are included, and multiple monitor terminals 2 are connected respectively to master controller 3.Storage in the present embodiment
Battery is divided into multiple battery groups 1, and each battery group includes the cell that multi-section serial is connected.Each monitor terminal 2
It is connected respectively to a battery group 1.
When implementing, above-mentioned battery group 1 and the monitor terminal 2 being connected with the battery group 1 can be located at same
In box body, and on the box body have positive terminal, negative terminal and signal wire binding post, wherein by just,
Negative terminal can realize being connected in series for battery, can be connected by signal wire binding post with master controller 3.
Above-mentioned master controller 3 includes the first control unit 31 and the first communication unit 32；Each monitor terminal 2 includes second
Control unit 21, the second communication unit 22, detection unit 23 and balanced unit 24.Specifically, first on above-mentioned master controller 3
The communication unit 32 of control unit 31 and first can be integrated into same circuit board, and the second control unit 21 on monitor terminal 2,
Two communication units 22, detection unit 23 and balanced unit 24 can also be integrated into same circuit board.
When the monitor terminal 2 that detection unit 23 is used for where it is in running order, in the control of the second control unit 21
The performance parameter of each section cell in the lower corresponding battery group 1 of detection of system.One detection unit 23 has a plurality of monitoring
Passage, according to sense channel number n (n is the integer more than or equal to 1), since one end first segment cell of battery,
On the basis of the number n of passage, per n, an adjacent cell is a small group, if so that battery is split into dry cell
The structure (battery number of last battery group 1 is likely less than n) that group 1 connects, the monitoring where detection unit 23 is whole
End 2 is separately mounted in each battery group 1 of correspondence.For example, with reference to Fig. 1, detection unit 23 can have six TCH test channels,
According to the number of channels of the test of detection unit 23, from left to right, neighboring unit cell according to six sections is divided into a battery small
Group 1, so that the battery with totally 24 section cells is divided into the structure that four battery groups 1 connect, each battery is small
The correspondence of group 1 installs monitor terminal 2.
As shown in figure 3, above-mentioned detection unit 23 is respectively via multiple detection lines and detection switch, (detection switch specifically may be used
Using semiconductor switch devices such as triode, MOSFET) connected with each section cell in corresponding battery group 1；Detection
Unit 23 makes two detection switch of the positive and negative electrode of each connection cell in the case where monitor terminal is in running order, successively
Close (disconnection of other detection switch), to obtain the performance parameter of corresponding cell.Certainly, detection unit 23 also can be direct
The panel voltage and group's electric current of battery group 1 are detected, and by above-mentioned panel voltage and group's electric current via the second communication unit
22 are sent to master controller 3.
First control unit 31 is used for the performance parameter (inspection from each monitor terminal 2 according to each section cell
Survey unit 23) calculate the average state-of-charge (SOC) and each state-of-charge for saving cell for obtaining each battery group
(SOC), and when the average state-of-charge of any battery group is less than the first preset value, to the prison for being connected to the battery group 1
Control terminal 2 sends passive equalization instruction, the battery where the state-of-charge of any section cell is less than the section cell
When the average state-of-charge of group 1 and battery group are in mode of operation, active equalization instruction is sent to corresponding monitor terminal 2
(active equalization instruction includes the numbering of the too low single battery of state-of-charge in correspondence battery group 1).Specifically, the first control
Unit 31 processed includes MCU and storage device, wherein having the instruction code performed for MCU in storage this side, performs above-mentioned instruction
Code can realize corresponding calculate and the corresponding instruction of generation.
First communication unit 32 and the second communication unit 22 are used to realize the data between master controller 3 and monitor terminal 2
Transmission, specifically includes the performance parameter of the cell sent from monitor terminal 2 to master controller 3, from master controller 3 to monitoring
Passive equalization instruction and active equalization instruction that terminal 2 is sent etc..Especially, for simplify master controller 3 and monitor terminal it
Between line, the above-mentioned communication unit 22 of first communication unit 32 and second can be communicated using power line carrier communication mode.
Second control unit 21 is used to receive passive equalization instruction (the first control unit 31 for carrying out autonomous controller 3)
When make where monitor terminal 2 enter park mode, the monitor terminal 2 at place and be in mode of operation and receive active equalization
Balanced unit 24 is set to carry out equalization operation during instruction (the first control unit 31 for carrying out autonomous controller 3).Specifically, the second control
Unit 21 includes MCU and storage device, wherein having the instruction code performed for MCU in storage this side, performs above-mentioned instruction generation
Corresponding control process can be achieved in code.
For each monitor terminal 2, its power consumption for being in mode of operation is significantly larger than the power consumption in park mode.
Therefore above-mentioned battery equalisation device can realize the quilt of correspondence battery group 1 by making correspondence monitor terminal 2 be in mode of operation
Dynamic equilibrium.
Battery group 1 power taking of the balanced unit 24 under the control of the second control unit 21 where it, and be state-of-charge
Less than the cell charging of the average state-of-charge of battery group.Above-mentioned balanced unit 24 specifically may include DC transfer circuit
(DC/DC), as shown in figure 4, the input of above-mentioned DC transfer circuit is connected to positive and negative electrode (such as first segment of battery group 1
The positive pole of cell and the negative pole of final section cell), output end is respectively via multiple charge switch (charge switch
Specifically can be using semiconductor switch devices such as triode, MOSFET) connect with each section cell in corresponding battery group 1
Connect；Balanced unit 24 (DC transfer circuit) makes state-of-charge too low when active equalization is operated by the second control unit 21
Cell positive and negative electrode two charge switch closure (disconnections of other charge switch), will be derived from its place battery it is small
It is the too low cell charging of the state-of-charge that the direct current of group 1, which is done after DC converting,.
If whole group battery point dry cell group 1 is responsible for an electricity by above-mentioned battery equalisation device with a monitor terminal 2
Pond group 1, compared with every batteries all add balanced device, reduces the usage quantity of balanced device, reduces number of electrical lines, installs essence
Letter, while the power taking of balanced unit 24 directly passes up to the voltage of battery group so that the power taking voltage of balanced unit 24 and single-unit electricity
Pressure difference is greatly reduced between pond, it is to avoid directly cause High Pressure Difference state from the power taking of battery two ends, and the peace of operation is greatly improved
Overall coefficient.And above-mentioned battery equalisation device is changed by monitor terminal between mode of operation and park mode, utilizes power consumption
It is passive balanced that control is realized, with merely with the passive balanced way of thermal energy consumption compared with, saved electric energy.
Above-mentioned monitor terminal 2 may also include power supply unit, and the power supply unit is via power switch (gate-controlled switch, such as three
Pole pipe, MOSFET etc.) be connected to the feeder ear of corresponding battery group 1 (such as in battery group 1 positive pole of first batteries with
The negative pole of final section battery), and the direct current of acquirement is converted into suitable voltage, it is the second control unit 21, detection list
First 23, second communication unit 22 is powered.Second control unit 21 enters the monitor terminal 2 at place by disconnecting above-mentioned power switch
Enter park mode.
In addition, monitor terminal 2 may also include timer, and the timer in the case where monitor terminal 2 is in park mode every
Preset time closes power switch, so as to wake up corresponding monitor terminal 2.The preset time of above-mentioned timer can pass through second
Control unit 21 is set, and the timer is closed when monitor terminal 2 is in mode of operation.Certainly, above-mentioned timer can be to not
It is connected, and by sending wake-up signal to the second control unit 21, is called out by the second control unit 21 receiving with power switch
Power switch is closed during awake signal, so that monitor terminal 2 enters mode of operation.
Above-mentioned master controller 3 may also comprise one detection circuit, the performance parameter for detecting whole battery, for example always
Voltage, total current, master controller temperature etc., so as to aid in the average state-of-charge for carrying out battery group 1 to calculate and monomer electricity
Pond state-of-charge is calculated.
Especially, because battery is a complicated electrochemical energy converting system, its most important parameter is its lotus
Electricity condition (SOC) and health status (SOH), even if voltage is identical, its capacity status is not necessarily the same, accordingly, it would be desirable to more add
Kind battery model parameter carries out judgement measurement, theoretical according to Thevenin battery models, detect battery voltage U,
The parameters such as ohmic internal resistance R1, polarization resistance R2, polarization capacity C2, are real-time SOC, SOH and estimate, combined voltage parameter is used as equilibrium
Basis for estimation, is a kind of more rational determination methods.Based on this, the performance parameter of the cell in the present invention includes battery
Voltage, battery Ohmic resistance, battery polarization internal resistance and battery polarization electric capacity etc.；The basis of the first control unit 31 of master controller 3
The above-mentioned performance parameter of each section cell calculates the health status of each batteries, and in the health of any section cell
State sends alarm signal when being less than the second preset value, so as to notify staff to change corresponding cell.Also, monomer
The state-of-charge of battery also can be by the first control unit 31 of master controller 3 according to the cell voltage of cell, battery ohm
Resistance, battery polarization internal resistance and battery polarization electric capacity etc., which are calculated, obtains (can use any existing computation model).
In addition, the performance parameter of cell may also include battery temperature, can be specifically each monomer in battery group 1
Battery configures a temperature sensor, and obtains the battery temperature of each cell by temperature sensor, master controller 3
First control unit 31 makes to be connected to where the cell when the battery temperature of any cell exceedes preset temperature
The monitor terminal 2 of battery group enters park mode.
As shown in figure 5, being that the present invention has active equalization and passive distributed storage battery equalization methods embodiment in a balanced way concurrently
Schematic flow sheet, above-mentioned battery is all monomers electricity in the battery pack that is in series by more piece cell, battery
Pond is located at multiple battery groups respectively, and each battery group has the cell that multi-section serial is connected respectively；Each battery
Group's monitor terminal connection corresponding with one respectively, and each monitor terminal is connected respectively to master controller；This method includes
Following steps：
Step S51：Each monitor terminal in the operational mode, detects the performance of each section cell of battery respectively
Parameter, and will detect that each section cell performance parameter obtained is sent to master controller.
Step S52：Master controller calculates according to the performance parameter of each section cell and obtains the flat of each battery group
Equal state-of-charge.
Step S53：Whether master controller judges the average state-of-charge of each battery group less than the first preset value, and
When the average state-of-charge of any battery group is less than first threshold, step S54 is performed, otherwise return to step S52, for follow-up
The average state-of-charge that the performance parameter of the cell of reception carries out battery group is calculated.
Step S54：Master controller to be connected to average state-of-charge less than first threshold battery group monitor terminal
Passive equalization instruction is sent, monitor terminal performs passive equalization instruction and enters park mode.
Step S55：Master controller is when receiving the performance parameter of the single battery from each monitor terminal, main control
Device calculates the state-of-charge of each section cell always according to the performance parameter of each section cell, and the step can be with step
S52 is performed simultaneously.
Step S56：Master controller judges whether the state-of-charge of each section cell is flat less than battery group where it
Equal state-of-charge, and in average lotus of the state-of-charge less than the battery group where the section cell of any section cell
Electricity condition and when correspondence battery group is in mode of operation, performs step S57.
Step S57：Master controller sends active equalization instruction to corresponding monitor terminal, and correspondence monitor terminal is small from battery
Group power taking and the cell charging for state-of-charge less than the average state-of-charge of battery group.
It may also include in above-mentioned battery equalisation method：Monitor terminal in the hibernation mode, enters every preset time
Mode of operation and the performance parameter for detecting each section cell in correspondence work group, the process can specifically pass through a timing
Device is realized.
The performance parameter of above-mentioned cell includes cell voltage, battery Ohmic resistance, battery polarization internal resistance and battery pole
Change electric capacity；It may also include in above-mentioned battery equalisation method：Master controller is according to each performance parameter meter for saving cell
The health status of each batteries is calculated, and alarm signal is sent when the health status of any batteries is less than the second preset value.
The performance parameter of above-mentioned cell may also include battery temperature (can specifically be detected by temperature sensor), master control
Device processed makes to be connected to the battery group where the cell when the battery temperature of any cell exceedes preset temperature
Monitor terminal enters park mode.
Above-mentioned monitor terminal can specifically be connected to the feeder ear of correspondence battery group, and monitor terminal point via power switch
Each section cell in correspondence battery group is not connected to via multiple detection switch；Monitor terminal in working condition according to
The secondary detection switch for making each section cell two ends closes to detect the performance parameter of corresponding cell；Monitor terminal leads to
Cross and disconnect the power switch and enter park mode.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
1. one kind has active equalization and passive distributed storage battery balancer in a balanced way concurrently, the battery is by more piece monomer
The battery pack that battery is in series, it is characterised in that：The battery equalisation device includes master controller and multiple connected respectively
To the monitor terminal of master controller, and multiple monitor terminals are connected respectively to multiple battery groups, and each battery group includes many
Save the cell being connected in series；The master controller includes the first control unit, the first communication unit；Each monitoring is eventually
End includes the second control unit, the second communication unit, detection unit and balanced unit；Wherein：
The detection unit detects that corresponding battery is small when monitoring terminal is in running order under the control of the second control unit
The performance parameter of each section cell in group；
First control unit, the flat of each battery group is obtained for being calculated according to the performance parameter of each section cell
The state-of-charge of equal state-of-charge and each section cell, and it is less than first in the average state-of-charge of any battery group
During preset value, passive equalization instruction is sent, in the charged of any section cell to the monitor terminal for being connected to the battery group
State be less than the section cell where battery group average state-of-charge and the battery group be in mode of operation when,
Active equalization instruction is sent to corresponding monitor terminal；
First communication unit and the second communication unit, for realizing the cell between monitor terminal and master controller
The transmission of performance parameter, passive equalization instruction and active equalization instruction；
Second control unit, for the monitor terminal where making when receiving passive equalization instruction enter park mode,
Monitor terminal at place is in mode of operation and balanced unit is carried out equalization operation when receiving active equalization instruction；
The balanced unit, it is electric for being less than from battery group power taking under the control of the second control unit and for state-of-charge
The cell charging of the average state-of-charge of pond group.
2. according to claim 1 have active equalization and passive distributed storage battery balancer, its feature in a balanced way concurrently
It is：The monitor terminal includes power supply unit, and said supply unit is connected to corresponding battery group via power switch
Feeder ear；The detection unit connects via multiple detection switch with each section cell in corresponding battery group respectively
Connect；The detection unit closes the detection switch at each section cell two ends in the case where monitor terminal is in running order, successively
Close to detect the performance parameter of corresponding cell；Second control unit makes place by disconnecting the power switch
Monitor terminal enters park mode.
3. according to claim 2 have active equalization and passive distributed storage battery balancer, its feature in a balanced way concurrently
It is：The monitor terminal include timer, and the timer monitor terminal be in park mode under every preset time to
The power switch sends Continuity signal, the monitor terminal is entered mode of operation.
4. according to claim 1 have active equalization and passive distributed storage battery balancer, its feature in a balanced way concurrently
It is：The performance parameter of cell includes cell voltage, battery Ohmic resistance, battery polarization internal resistance and battery polarization electric capacity；
First control unit of the master controller calculates the healthy shape of each batteries according to the performance parameter of each section cell
State, and send alarm signal when the health status of any section cell is less than the second preset value.
5. according to claim 1 have active equalization and passive distributed storage battery balancer, its feature in a balanced way concurrently
It is：The performance parameter of cell includes battery temperature, and the first control unit of the master controller is in any cell
Battery temperature make to be connected to the monitor terminal of the battery group where the cell when exceeding preset temperature and enter dormancy mould
Formula.
6. one kind has active equalization and passive distributed storage battery equalization methods in a balanced way concurrently, the battery is by more piece monomer
The battery pack that battery is in series, it is characterised in that：It is small that all cells in the battery are located at multiple batteries respectively
Group, and each battery group has the cell that multi-section serial is connected respectively；Each battery group is respectively with one
Individual corresponding monitor terminal connection, and each monitor terminal is connected respectively to master controller；It the described method comprises the following steps：
Each monitor terminal detects the performance parameter of each section cell of the battery in the operational mode, respectively；
Master controller calculates the average state-of-charge for obtaining each battery group according to the performance parameter of each section cell, and
When the average state-of-charge of any battery group is less than the first preset value, sent to the monitor terminal for being connected to the battery group
Passive equalization instruction, the monitor terminal performs the passive equalization instruction and enters park mode；
Master controller calculates the state-of-charge of each section cell according to the performance parameter of each section cell, in any section
Average state-of-charge of the state-of-charge of cell less than the battery group where the section cell and the battery group
During in mode of operation, sending active equalization instruction to corresponding monitor terminal makes the monitor terminal be taken from the battery group
Electricity and the cell charging for state-of-charge less than the average state-of-charge of battery group.
7. according to claim 6 have active equalization and passive distributed storage battery equalization methods, its feature in a balanced way concurrently
It is：Methods described includes：The monitor terminal in the hibernation mode, enters mode of operation every preset time and detects correspondence
The performance parameter of each section cell in work group.
8. according to claim 6 have active equalization and passive distributed storage battery equalization methods, its feature in a balanced way concurrently
It is：The performance parameter of cell includes cell voltage, battery Ohmic resistance, battery polarization internal resistance and battery polarization electric capacity；
Methods described includes：
The master controller calculates the health status of each batteries according to the performance parameter of each section cell, and any
The health status of section cell sends alarm signal when being less than the second preset value.
9. according to claim 6 have active equalization and passive distributed storage battery equalization methods, its feature in a balanced way concurrently
It is：The performance parameter of cell includes battery temperature, and the master controller exceedes in the battery temperature of any cell
The monitor terminal for making to be connected to the battery group where the cell during preset temperature enters park mode.
10. according to claim 6 have active equalization and passive distributed storage battery equalization methods, its feature in a balanced way concurrently
It is：The monitor terminal is connected to the feeder ear of correspondence battery group via power switch, and the monitor terminal is passed through respectively
Each section cell in correspondence battery group is connected to by multiple detection switch；The monitor terminal in working condition according to
The secondary detection switch for making each section cell two ends closes to detect the performance parameter of corresponding cell；The monitoring is eventually
End enters park mode by disconnecting the power switch.
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