CN108923088A - Battery discharge capability lifting device and method - Google Patents
Battery discharge capability lifting device and method Download PDFInfo
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- CN108923088A CN108923088A CN201810913745.5A CN201810913745A CN108923088A CN 108923088 A CN108923088 A CN 108923088A CN 201810913745 A CN201810913745 A CN 201810913745A CN 108923088 A CN108923088 A CN 108923088A
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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
- H01M10/44—Methods for charging or discharging
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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 invention discloses a kind of battery discharge capability lifting device and method, device includes working battery group, continuous energy device.Working battery group includes several working battery units.Continuous energy device includes continuous energy battery pack and current potential lifter.A bidirectional electronic switch is arranged in each working battery unit.Controller realizes the change of working battery unit charging and discharging state by controlling the charge and discharge switching state of bidirectional electronic switch.Controller realized by cyclic shift charging signals are issued to each bidirectional electronic switch it is continuous can device current charge is gradually taken turns to working battery unit, charge each working battery unit without charging to load discharge to an at least working battery unit every time.Each working battery unit of charging receives charging voltage and charges, and each working battery unit of electric discharge is from electric discharge output interface to load discharge.The present invention effectively extends discharge time under the premise of not changing battery existing capacity, improves battery discharge capability.
Description
Technical field
The present invention relates to a kind of battery discharge capability lifting devices, and the electric power storage tank discharge energy realized based on the device
Power method for improving belongs to battery discharge capability lift technique field.
Background technique
Common secondary cell, i.e. battery currently on the market, main Types have lead-acid accumulator, lithium ion battery etc.,
It is widely used in all kinds of energy storage, energy conservation and clean energy resource system and all kinds of power devices, the capacity and energy of these batteries
Metric density differs in size, but all extremely limited, so that its application in energy field receives great limitation, especially exists
The more demanding field of discharge capability or energy density to battery, the discharge performance of battery are differed with actual operation requirements
It is far, outstanding problem.
Battery is the important foundation energy elements in various electrical installations and equipment, has the existing energy that discharges of battery
The defects of power is weak, energy density is low and high cost has become the serious hindrance of limitation energy industry technological progress, it can be seen that, such as
What further optimizes and improves the discharge performance of existing battery, promotes its discharge capability, is current urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of battery discharge capability lifting device and methods, in working battery group
Working battery unit using gradually taking turns current charge, the mode that the working battery unit not charged discharges to external loading, not
Under the premise of changing battery existing capacity, the discharge capability of battery is effectively improved.
To achieve the goals above, the invention adopts the following technical scheme：
A kind of battery discharge capability lifting device, it is characterised in that：It includes working battery group, continuous energy device, controller
And bidirectional electronic switch, wherein：Working battery group includes several working battery units；Continuous energy device includes continuous energy battery pack and current potential
Lifter；Continuous energy battery pack is powered to current potential lifter and is connected in series with current potential lifter to be higher than to the output of working battery group
The charging voltage of working battery unit side voltage；A bidirectional electronic switch is arranged in each working battery unit, and controller passes through control
The charge and discharge switching state of bidirectional electronic switch processed realizes the change of working battery unit charging and discharging state；Controller by
Each bidirectional electronic switch issues cyclic shift charging signals to realize that continuous energy device gradually takes turns current charge to working battery unit, every time
Charge each working battery unit without charging to load discharge to an at least working battery unit, wherein charging it is each
Working battery unit is charged by receiving charging voltage after bidirectional electronic switch parallel connection, and each working battery unit of electric discharge is logical
Cross bidirectional electronic switch it is in parallel after from electric discharge output interface to load discharge.
A kind of battery discharge capability method for improving realized based on the battery discharge capability lifting device, it is special
Sign is that it includes step：
1) judge whether the end voltage of the continuous energy battery pack is equal to or less than the end voltage of the working battery group, or
Although the end voltage of the continuous energy battery pack is greater than the end voltage of the working battery group but working battery group end voltage is
It is no to reach lower threshold and be made up by the charging of the continuous energy battery pack：If so, stop it is described it is continuous can device to each
The working battery unit is gradually taken turns current charge；If it is not, then going to 2)；
If 2) the working battery group electric energy decline, the charge and discharge based on the controller to the bidirectional electronic switch
The control of switching state fills the continuous energy device gradually in turn to the working battery unit of the working battery group
Electricity, in each charging：
The controller at least one bidirectional electronic switch issues charging instruction and to other bidirectional electronic
Switch issues electric discharge instruction, and the bidirectional electronic switch for receiving charging instruction switches to charge mode, to make the continuous energy
The working battery unit that device connects the bidirectional electronic switch for switching to charge mode charges, while receiving and putting
The bidirectional electronic switch of electricity instruction switches to discharge mode, to make the bidirectional electronic switch institute for switching to discharge mode
The working battery unit of connection is to load discharge；
3) it returns 1).
It is an advantage of the invention that：
The use pattern that the present invention revolutionizes the charge and discharge that battery since the dawn of human civilization is continued to use always and puts, charges is right
Working battery unit in working battery group is not influencing working battery group integrally to outside by the way of gradually taking turns current charge
On the basis of load discharge effect, realize to the online recovery of each working battery unit electric energy and supplement, while having reached both
The discharge capability of working battery group, and the purpose discharged outward incessantly are promoted, in the premise for not changing battery existing capacity
Under, the ill effect for effectively inhibiting internal storage battery to occur in continuous discharge with lesser power substantially improves electric power storage
The environment and operating condition of pond electrochemical reaction in charge and discharge process have accomplished the abundant digging to working battery group electric discharge potential
Pick, is obviously improved the equivalent capacity of battery, energy density.
Detailed description of the invention
Fig. 1 is a preferred embodiment schematic diagram of battery discharge capability lifting device of the present invention.
Specific embodiment
As shown in Figure 1, battery discharge capability lifting device of the present invention includes working battery group 20, continuous energy device 10, control
Device 40 and bidirectional electronic switch 50, wherein：Working battery group 20 includes several working battery units, work electricity as shown in Figure 1
Pool unit B1 to Bn (n is the positive integer more than or equal to 1)；Continuous energy device 10 includes continuous energy battery pack 11 and current potential lifter 12；It is continuous
Energy battery pack 11 is powered to current potential lifter 12 and is connected in series with current potential lifter 12 to be higher than to the output of working battery group 20
The charging voltage of working battery unit side voltage (can be considered that current potential lifter 12 has carried out at current potential promotion continuous energy battery pack 11
Manage), i.e., the charging voltage that continuous energy device 10 exports is end voltage and the transformation of 12 therein of current potential lifter of continuous energy battery pack 11
The sum of voltage obtained afterwards；A bidirectional electronic switch 50 is arranged in each working battery unit, and controller 40 is by controlling two-way electricity
The charge and discharge switching state of sub switch 50 realizes the change of working battery unit charging and discharging state；Controller 40 is by each pair
Cyclic shift charging signals are issued to electronic switch 50 to realize that continuous energy device 10 gradually takes turns current charge to working battery unit, every time
An at least working battery unit each working battery unit without charging that charges is put to external loading (not shown)
Electricity, wherein each working battery unit of charging receives charging voltage progress after passing through corresponding each 50 parallel connection of bidirectional electronic switch
Charging, each working battery unit of electric discharge pass through after corresponding each 50 parallel connection of bidirectional electronic switch from electric discharge output interface 80 to negative
Placing electricity.
In actual design, such as scheme, the cathode ground connection of all working battery unit, the anode of each working battery unit is mutually
Independently it is connect respectively with the battery terminal connections of a corresponding bidirectional electronic switch 50 (pin 3 as shown in Figure 1).Continuous energy battery pack 11
Including several continuous energy battery units, continuous energy battery unit A1 to Am as shown in Figure 1 (m is the positive integer more than or equal to 1).It is all
The cathode of continuous energy battery unit is grounded and anode divides two-way, is connect all the way with the input side anode of current potential lifter 12, current potential mentions
The input side cathode ground connection of device 12 is risen, another way is connect with the outlet side cathode of current potential lifter 12.Current potential lifter 12 it is defeated
Side anode is used to export charging voltage and connect with the charging end of each bidirectional electronic switch 50 (pin 1 as shown in Figure 1) out, and each pair
It is connect to the discharge end (pin 2 as shown in Figure 1) of electronic switch 50 with electric discharge output interface 80, electric discharge output interface 80 is for connecting
Connect load, charge and discharge control end (the pin 4 as shown in Figure 1) charge and discharge corresponding to controller 40 respectively of each bidirectional electronic switch 50
(the charge and discharge control signal output end of controller 40 port P1 as shown in Figure 1 to the Pn) connection of electric control signal output end.
In the present invention, controller 40 includes microprocessor 41 or the control unit being made of other digitizers.
In the present invention, working battery unit be made of a battery or by multiple same capacity battery connect structure
At.Continuous energy battery unit is made of a battery, or is connected in series by the battery of multiple same capacity, or by multiple batteries
It is constituted in a manner of series-parallel mixed connection.
In the present invention, working battery group 20, continuous energy battery pack 11 are independent mutually.Further, in working battery unit
Each battery capacity it is identical with specification, equally, continue can each battery in battery unit capacity it is identical with specification, each work
The cathode of the cathode and each continuous energy battery unit of making battery unit is altogether.
In the present invention, current potential lifter 12 is the adjustable DC/DC converter of isolated voltage, isolated regulated power supply or electricity
The existing ripening electron component such as pond group.A kind of isolated adjustable input side of DC/DC converter of voltage is isolated with outlet side
Voltage regulator device is device known in the art.When the adjustable DC/DC converter of the isolated voltage of selection, working battery
The balanced voltage of unit is designed as being equal to the balanced voltage of continuous energy battery unit.
In actual design, bidirectional electronic switch 50 includes that charged electrical switchs and discharge electronic switch, and charged electrical is opened
The outlet side anode of one end connection current potential lifter 12 of pass, the other end of charged electrical switch divides two-way, all the way with corresponding one
Working battery unit anode connection, another way with electric discharge electronic switch one end connect, the other end for the electronic switch that discharges and
The output interface 80 that discharges connects, and charged electrical switch, the switch control terminal of electric discharge electronic switch are jointly corresponding on controller 40
The connection of same charge and discharge control signal output end, and charged electrical switch, electric discharge any of electronic switch and controller
It is connected with phase inverter F between 40 charge and discharge control signal output end, so that both charged electrical switch and electric discharge electronic switch
Between state inversions, alternate conduction and shutdown, specifically, when charged electrical switch conduction, with the electric discharge electronics in all the way
Switch is turned off in synchronization, and when the electronic switch that discharges is connected, it is closed with the charged electrical switch in all the way in synchronization
It is disconnected.
Such as Fig. 1, further, charged electrical switch includes charge switch transistor Kc1, and electric discharge electronic switch includes electric discharge
Switching transistor Kd1, wherein：It is connected in the form of half-bridge between charge switch transistor Kc1 and discharge switch transistor Kd1, i.e.,
The drain electrode of charge switch transistor Kc1 as bidirectional electronic switch 50 charging end and source electrode and discharge switch transistor Kd1
Drain electrode connection, discharge end of the source electrode of discharge switch transistor Kd1 as bidirectional electronic switch 50, charge switch transistor Kc1
It is connect to the public connecting end of discharge switch transistor Kd1 with the anode of corresponding working battery unit, charge switch transistor
Kc1, discharge switch transistor Kd1 grid connect respectively with respective driving circuit, controlled by each driving circuit, it is each to drive
Circuit is connect with controller 40, and specifically, a driving circuit is directly connect with controller 40 and another driving circuit passes through
It is connect by phase inverter F with controller 40, i.e. charge switch transistor and the received driving signal of discharge switch transistor is anti-each other
Phase.
Such as Fig. 1, driving circuit includes triode and Resistor-Capacitor Unit, wherein：The driving being connect with charge switch transistor Kc1
Circuit includes triode Q1, includes triode Q2 with the discharge switch transistor Kd1 driving circuit connecting.
In the present invention, charge switch transistor Kc1, discharge switch transistor Kd1 can imitate for bipolar transistor or field
The active switching devices such as transistor or igbt transistor (i.e. insulated gate bipolar transistor) are answered, charge and discharge electronic cutting is such as required
The voltage drop of pass is minimum, when even zero, it is possible to use the electromagnetic relay containing transfer contact.
Such as Fig. 1, battery discharge capability lifting device of the present invention further includes Detection of Process Parameters device 30, wherein：Process ginseng
Number detector 30 includes being connected between the outlet side anode of current potential lifter 12 and the charging end of each bidirectional electronic switch 50, using
The charging current sensor 31 of charging current is detected, and is connected to the discharge end of each bidirectional electronic switch 50 and electric discharge exports
Discharge current sensor 32 between interface 80, for detecting discharge current, the detection signal output of charging current sensor 31
End is connected via the first amplifying circuit 33 A/D conversion signal end corresponding to controller 40, the detection of discharge current sensor 32
Signal output end is connected via the second amplifying circuit 34 A/D conversion signal end corresponding to controller 40.
In actual design, the first amplifying circuit 33 includes transport and placing device U1, and the second amplifying circuit 34 includes transport and placing device U2.It fills
Electric current sensor 31, discharge current sensor 32 are current sensor, and the first amplifying circuit 33, the second amplifying circuit 34 are general
Logical operational amplifier circuit, they are device known in the art or circuit, therefore are not described in detail herein.
Such as Fig. 1, continue the anode (anode of i.e. each continuous energy battery unit) of energy battery pack 11, the anode of working battery group 20
(anode of i.e. each working battery unit, when actual implementation may be designed as the discharge end of each bidirectional electronic switch 50) and controller 40
The connection of corresponding A/D conversion signal end, the start-up and shut-down control end of current potential lifter 12, charging voltage adjust control terminal respectively with control
The corresponding control signal output end of device 40 connects.
In actual implementation, when apparatus of the present invention are of less demanding to charge parameter control, discharge current biography can also be saved
Sensor 32 and the second amplifying circuit 34.
In actual design, battery discharge capability lifting device of the present invention further includes that battery combination mode switches switch
90, continue can the anode of battery pack 11, the input side anode of current potential lifter 12, electric discharge output interface 80 respectively with battery combination side
Formula switches the corresponding switching connecting pin connection of switch 90, and battery combination mode switches switching control end and the controller 40 of switch 90
Corresponding control signal output end connection, wherein：
Whether the end voltage of the continuous energy battery pack 11 of judgement is equal to or less than the end voltage of working battery group, although continuous energy
The end voltage of battery pack 11 is greater than the end voltage of working battery group but whether the end voltage of working battery group reaches lower threshold and
It can not be made up by the charging of continuous energy battery pack 11：If so, switching switch 90 by battery combination mode makes continuous energy battery
The positive and electric discharge output interface 80 of group 11 is connected, to make continuous energy battery pack 11 and working battery group jointly to load discharge (this
When current charge is not taken turns to working battery group gradually), conversely, by battery combination mode switch switch 90 make it is continuous can battery pack
11 anode is connected with the input side anode of current potential lifter 12, to make continuous energy battery pack 11 power to current potential lifter 12, from
And continuous energy device 10 is made gradually to take turns current charge to the execution of working battery unit.
Such as Fig. 1, the preferred construction that battery combination mode switches switch 90 is shown in figure, is such as schemed, battery combination mode
Switching switch 90 includes relay, and relay includes change-over switch J-1 and coil J, wherein：The stationary contact of change-over switch J-1 with
The anode connection of continuous energy battery pack 11, the normally closed movable contact of change-over switch J-1 are connect with the input side anode of current potential lifter 12,
The normally opened movable contact of change-over switch J-1 is connect with electric discharge output interface 80, and mono- termination power of coil J, the other end is via triode
Q, the corresponding control signal output end of resistance and controller 40 connects.
In actual motion, if working battery group 20, because electric discharge causes its end voltage to decline, and continuing at this time can battery pack 11
End voltage be higher than working battery group end voltage when, at this time controller 40 to battery combination mode do not switch switch 90 issue cut
Instruction is changed, then, triode Q cut-off, coil J no power, stationary contact 1 is remained closed with normally closed movable contact 2, and continuing can battery pack 11
It powers to current potential lifter 12, while controller 40 carries out the control of charging and discharging state to each bidirectional electronic switch 50, continuing can device
10 pairs of working battery groups 20 carry out gradually charging process in turn.
And when there is following any case, controller 40 will switch the sending switching of switch 90 to battery combination mode and refer to
It enables：
1. the end voltage that the end voltage of continuous energy battery pack 11 is equal to or less than working battery group；
2. although the end voltage of continuous energy battery pack 11 is greater than the end voltage of working battery group but the end voltage of working battery group
Reach the lower threshold of setting and can not be made up by the charging of continuous energy battery pack 11；
After receiving switching command, triode Q be connected so that coil J be powered, change-over switch J-1 movement, stationary contact 1 and often
The disconnection of movable contact 2 is closed, stationary contact 1 and normally opened movable contact 3 are connected, and continuous energy battery pack 11 stops powering to current potential lifter 12, are continued
The positive and electric discharge output interface 80 of energy battery pack 11 is connected, and is continued energy battery pack 11 and is put jointly to load with working battery group 20
Electricity, while controller 40 issues electric discharge instruction to whole bidirectional electronic switch 50, stops gradually charging process in turn, all works
Battery pack is in discharge condition.
In actual design, continue can battery pack 11 anode, i.e., it is each it is continuous can battery unit anode by voltage-stablizer 60 into
Switch switch 90 to controller 40, Detection of Process Parameters device 30, battery combination mode after row steady pressure treatment to power, such as Fig. 1, power supply
Voltage is Ve.In addition, the anode of continuous energy battery pack 11 is connect with step-up DC/DC converter 70, step-up DC/DC converter 70
It powers, i.e., powers to the collector of triode Q1 and Q2 to each bidirectional electronic switch 50 after carrying out boosting processing.
Based on battery discharge capability lifting device of the present invention, the invention also provides a kind of battery discharge capabilities to be promoted
Method, it includes step：
1) whether the end voltage of the continuous energy battery pack 11 of judgement is equal to or less than the end voltage of working battery group, although continuous
Can battery pack 11 end voltage is greater than the end voltage of working battery group but the end voltage of working battery group reaches lower threshold and nothing
Method is made up by the charging of continuous energy battery pack 11：It is gradually taken turns if so, stopping continuous energy device 10 to each working battery unit
Current charge；If it is not, then going to 2)；
If 2) working battery group causes electric energy to decline because of electric discharge, continue at this time can the end voltage of battery pack 11 should be greater than work electricity
The end voltage of pond group, the then control based on controller 40 to the charge and discharge switching state of bidirectional electronic switch 50 make continuous energy device 10
Current charge is gradually taken turns to the working battery unit of working battery group 20, in each charging：
Controller 40 issues charging instruction to an at least bidirectional electronic switch 50 and sends out to other bidirectional electronic switch 50
Electric discharge instruction out, the bidirectional electronic switch 50 for receiving charging instruction switches to charge mode, make it is continuous can device 10 fill to switching to
The working battery unit charging that the bidirectional electronic switch 50 of power mode is connected, while the bidirectional electronic for receiving electric discharge instruction is opened
It closes and 50 switches to discharge mode, the working battery unit for connecting the bidirectional electronic switch for switching to discharge mode 50 is to load
Electric discharge；
3) it returns 1).
In the present invention, continue the end voltage and current potential lifter 12 that the charging voltage that energy device 10 exports is continuous energy battery pack 11
The sum of voltage after therein transformation, for example, the end voltage of continuous energy battery pack 11 is 12V, current potential lifter 12 is to received continuous
The 12V voltage of energy battery pack 11 obtains voltage 2V after being converted, and then, the charging voltage that continuous energy device 10 finally externally exports is
12V+2V, i.e. 14V.
Now illustrate charge and discharge process for charging to working battery unit B 1：Controller 40 to working battery list
The corresponding bidirectional electronic switch 50 connected of first B1 issues charging instruction, i.e. sending high potential, and then, triode Q1 conducting is driven
Dynamic charge switch transistor Kcl conducting, the working battery unit B 1 and continuous energy device 10 that this bidirectional electronic switch 50 is connected are connected,
The charging voltage that continuous energy device 10 exports is received to charge, and the high potential that controller 40 issues passes through phase inverter F inverting function
After become low potential, triode Q2 shutdown, discharge switch transistor Kd1 cut-off, this working battery unit B 1, which is now in, forbids
Discharge condition.
At the same time, controller 40 is put to the sending of the bidirectional electronic switch 50 of connection corresponding to working battery unit B 2-Bn
Electricity instruction, i.e. sending low potential, low potential become high potential after phase inverter F inverting function, then, other each bidirectional electronics
Triode Q2 conducting in switch 50, drives each discharge switch transistor Kd1 to be connected, and working battery unit B 2 to Bn and electric discharge are defeated
Outgoing interface 80 is connected, and to load discharge, and triode Q1 is turned off, charge switch transistor Kc1 shutdown, working battery unit B 2 to
Bn does not charge at this time.
For design has the battery discharge capability lifting device of the present invention of Detection of Process Parameters device 30, step is being executed
It is rapid 2) when further include step：
The charging current value of terminal voltage value and current potential lifter 12 outlet side of the controller 40 based on continuous energy battery pack 11, with
And the terminal voltage value and its discharge current value of working battery group, the start and stop of current potential lifter 12 are controlled, and to current potential
The voltage value size that lifter 12 itself transformation obtains is adjusted, to realize that continuous energy device 10 exports the tune of charging voltage value
Section, so that working battery unit is in optimal charged state always.
Furthermore：
When starting to carry out gradually taking turns current charge to each working battery unit, controller 40 is opened to the sending of current potential lifter 12
Dynamic instruction, then current potential lifter 12 brings into operation.
When stopping carrying out gradually taking turns current charge to each working battery unit, controller 40 stops to the sending of current potential lifter 12
It only instructs, then current potential lifter 12 is out of service.
When the end voltage for detecting continuous energy battery pack 11 reduces, controller 40 issues Raise transform to current potential lifter 12
Voltage instruction, this instruction refers to that the voltage value for obtaining current potential lifter 12 itself transformation increases, so that current potential lifter 12 is protected
The charging voltage of original output is held, to meet charge requirement.
When the charging voltage for detecting that continuous energy device 10 exports improves, controller 40 is issued to current potential lifter 12 reduces change
Voltage instruction is changed, this instruction refers to that the voltage value for obtaining current potential lifter 12 itself transformation reduces, to avoid the work being electrically charged
Make battery unit and overcharges problem.
If being set in during executing step 2), such as controlling goal-setting is that charging current value is equal to discharge current value/n,
Then：
When charging current value is greater than discharge current value/n, based on the end voltage of the continuous energy battery pack 11 detected, control
Device 40 is issued to current potential lifter 12 reduces voltage of transformation instruction, and the voltage value that current potential lifter 12 itself transformation obtains is optionally
It reduces, so that the charging voltage that current potential lifter 12 exports reduces, to reach charging current value equal to discharge current value/n mesh
Mark；When charging current value be less than discharge current value/n when, based on detect it is continuous can battery pack 11 end voltage, controller 40 to
Current potential lifter 12 issues Raise transform voltage instruction, and the voltage value that current potential lifter 12 itself transformation obtains optionally increases,
So that the charging voltage that current potential lifter 12 exports increases, to reach charging current value equal to discharge current value/n target.
In actual design, control target may also be set to charging current value greater than discharge current value/n, or charging
Current value is less than discharge current value/n, this can flexibly set according to actual needs, without limitations.
In step 1), if the end voltage of continuous energy battery pack 11 is equal to or less than the end voltage of working battery group, though
So the end voltage of continuous energy battery pack 11 is greater than the end voltage of working battery group but the end voltage of working battery group reaches lower threshold
And can not be made up by the charging of continuous energy battery pack 11, then stop continuous energy device 10 and is carried out gradually in turn to each working battery unit
Charging, while switching switch 90 by battery combination mode makes continuous energy battery pack 11 externally discharge jointly with working battery group, does
It is made full use of to battery electric energy.
In the present invention, the working battery unit number being electrically charged every time can be one or more, without limitations, can basis
It needs that suitable working battery unit is carried out while being charged.
The present invention carries out the division of working battery group and continuous energy battery pack to the battery of existing maturation, and increases some controls
System, handling components, that is, implementable, cost of implementation is low, good operation stability, easily operated and control, long service life, entirely
Installation weight is light, is easy in each field popularization and application.
The above is present pre-ferred embodiments and its technical principle used, and is come for those skilled in the art
It says, without departing from the spirit and scope of the present invention, any equivalent transformation based on the basis of technical solution of the present invention,
Simple replacement etc. obviously changes, and all falls within the protection scope of the present invention.
Claims (10)
1. a kind of battery discharge capability lifting device, it is characterised in that：It include working battery group, it is continuous can device, controller and
Bidirectional electronic switch, wherein：Working battery group includes several working battery units；Continuous energy device includes that continuous energy battery pack and current potential mention
Rise device；Continuous energy battery pack powers and is connected in series with current potential lifter to be higher than work to the output of working battery group to current potential lifter
Make the charging voltage of battery unit end voltage；A bidirectional electronic switch is arranged in each working battery unit, and controller passes through control
The charge and discharge switching state of bidirectional electronic switch realizes the change of working battery unit charging and discharging state；Controller is by each
Bidirectional electronic switch issue cyclic shift charging signals realize it is continuous can device current charge is gradually taken turns to working battery unit, it is right every time
An at least working battery unit charges each working battery unit without charging to load discharge, wherein each work of charging
Make battery unit to charge by receiving charging voltage after bidirectional electronic switch parallel connection, each working battery unit of electric discharge passes through
From electric discharge output interface to load discharge after bidirectional electronic switch is in parallel.
2. battery discharge capability lifting device as described in claim 1, it is characterised in that：
The cathode of all working battery units is grounded, the anode of each working battery unit it is independent mutually and respectively with phase
The battery terminal connections of a bidirectional electronic switch are answered to connect；
The continuous energy battery pack includes several continuous energy battery units, and the cathode of all continuous energy battery units is grounded and anode is divided to two
Road is connect with the input side anode of the current potential lifter all the way, and the outlet side cathode of another way and the current potential lifter connects
It connects；
The outlet side anode of the current potential lifter is connect with the charging end of each bidirectional electronic switch, each bidirectional electronic
The discharge end of switch is connect with the electric discharge output interface, the charge and discharge control end of each bidirectional electronic switch respectively with it is described
The corresponding charge and discharge control signal output end of controller connects.
3. battery discharge capability lifting device as described in claim 1, it is characterised in that：
The bidirectional electronic switch includes that charged electrical switchs and discharge electronic switch, described in one end connection that charged electrical switchs
Current potential lifter outlet side anode, charged electrical switch the other end divide two-way, all the way with a corresponding working battery list
The anode connection of member, another way are connect with one end of electric discharge electronic switch, and the other end for the electronic switch that discharges and the electric discharge are defeated
Outgoing interface connection, switch control terminal and the same charge and discharge corresponding on the controller of charged electrical switch, electric discharge electronic switch
The connection of electric control signal output end, and any of charged electrical switch, electric discharge electronic switch connect between the controller
It is connected to phase inverter, so that with rp state alternate conduction, shutdown between charged electrical switch and electric discharge electronic switch.
4. battery discharge capability lifting device as claimed in claim 3, it is characterised in that：
The charged electrical switch includes charge switch transistor, and the electric discharge electronic switch includes discharge switch transistor,
In：It is connected in the form of half-bridge between charge switch transistor and discharge switch transistor, charge switch transistor and discharge switch
The public connecting end of transistor is connect with the anode of a corresponding working battery unit, charge switch transistor, discharge switch
Transistor is connect with respective driving circuit respectively, and each driving circuit is connect with the controller.
5. battery discharge capability lifting device as described in claim 1, it is characterised in that：
The current potential lifter is the adjustable DC/DC converter of isolated voltage.
6. the battery discharge capability lifting device as described in any one of claims 1 to 5, it is characterised in that：
The battery discharge capability lifting device includes Detection of Process Parameters device, wherein：Detection of Process Parameters device includes connection
Between the current potential lifter and each bidirectional electronic switch, the charging current sensor for detecting charging current, with
And it is connected between each bidirectional electronic switch and the electric discharge output interface, passed for detecting the discharge current of discharge current
The detection signal output end of sensor, charging current sensor is converted via the first amplifying circuit A/D corresponding to the controller
Signal end connection, the detection signal output end of discharge current sensor is via the second amplifying circuit A/ corresponding to the controller
The connection of D conversion signal end；
The anode A/D conversion signal end corresponding to the controller of positive, the described working battery group of the continuous energy battery pack
Connection, the start-up and shut-down control end of the current potential lifter, charging voltage adjust control terminal control corresponding to the controller respectively
Signal output end connection.
7. the battery discharge capability lifting device as described in any one of claims 1 to 5, it is characterised in that：
The battery discharge capability lifting device includes that battery combination mode switches switch, it is described it is continuous can battery pack anode,
Input side anode, the electric discharge output interface of the current potential lifter switch the corresponding of switch to battery combination mode respectively and cut
Connecting pin connection is changed, battery combination mode switches the switching control end of switch and the corresponding control signal output end of the controller
Connection, wherein：Judge whether the end voltage of the continuous energy battery pack is equal to or less than the end voltage of the working battery group, or
Although the end voltage of the continuous energy battery pack is greater than the end voltage of the working battery group but the end voltage of the working battery group
Whether reach lower threshold and can not be made up by the charging of the continuous energy battery pack：If so, passing through battery combination mode
The continuous energy battery pack is connected with the electric discharge output interface in switching switch, to make the continuous energy battery pack and work electricity
Pond group mentions the continuous energy battery pack with the current potential jointly to load discharge, conversely, switching switch by battery combination mode
Device conducting is risen to make the continuous energy battery pack power to the current potential lifter.
8. a kind of battery realized based on battery discharge capability lifting device described in any one of claims 1 to 7 is put
Electric energy power method for improving, which is characterized in that it includes step：
1) judge whether the end voltage of the continuous energy battery pack is equal to or less than the end voltage of the working battery group, although
It is described it is continuous can battery pack end voltage be greater than the working battery group end voltage but the working battery group end voltage whether
Reach lower threshold and can not be made up by the charging of the continuous energy battery pack：If so, stopping the continuous energy device to each institute
It states working battery unit and is gradually taken turns current charge；If it is not, then going to 2)；
If 2) the working battery group electric energy decline, the charge and discharge of the bidirectional electronic switch are switched based on the controller
The control of state makes the continuous energy device gradually be taken turns current charge to the working battery unit of the working battery group,
Every time when charging：
The controller at least one bidirectional electronic switch issues charging instruction and to other bidirectional electronic switch
Electric discharge instruction is issued, the bidirectional electronic switch for receiving charging instruction switches to charge mode, to make the continuous energy device pair
The working battery unit charging that the bidirectional electronic switch of charge mode is connected is switched to, while receiving electric discharge and referring to
The bidirectional electronic switch enabled switches to discharge mode, connect the bidirectional electronic switch for switching to discharge mode
The working battery unit to load discharge；
3) it returns 1).
9. battery discharge capability method for improving as claimed in claim 8, it is characterised in that：
It further include step when executing the step 2)：
The charging current value of terminal voltage value and current potential lifter output of the controller based on the continuous energy battery pack, with
And the terminal voltage value and its discharge current value of the working battery group, the start and stop of the current potential lifter are controlled, and
The voltage value that the current potential lifter itself transformation obtains is adjusted to realize the continuous energy device output charging voltage value
It adjusts.
10. battery discharge capability method for improving as claimed in claim 8 or 9, it is characterised in that：
If the end voltage of the continuous energy battery pack is equal to or less than the end voltage of the working battery group, although the continuous energy
The end voltage of battery pack is greater than the end voltage of the working battery group but working battery group end voltage reaches lower threshold and
Can not by it is described it is continuous can the charging of battery pack make up, then stop it is described it is continuous can device to each working battery unit carry out by
Next round current charge, while switching switch by battery combination mode keeps the continuous energy battery pack and the working battery group jointly right
Outer electric discharge.
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