CN107219470A - The batteries property checked electric discharge device and method online - Google Patents
The batteries property checked electric discharge device and method online Download PDFInfo
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- CN107219470A CN107219470A CN201710610005.XA CN201710610005A CN107219470A CN 107219470 A CN107219470 A CN 107219470A CN 201710610005 A CN201710610005 A CN 201710610005A CN 107219470 A CN107219470 A CN 107219470A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention provides a kind of batteries property checked electric discharge device and method online, it is related to technical field of direct current power, the core molar block and core for including communication connection hold management module；Core molar block includes DC/DC converters group and by-pass unit in parallel；In non-core molar formula, by-pass unit connection, DC/DC converters group is in non-operating mode；When core receives power mode, by-pass unit cut-out, DC/DC converters group is in discharge mode；In core capacity charge pattern, by-pass unit cut-out, DC/DC converters group is in charge mode；After charging complete, close DC/DC converters group and connect by-pass unit；In core molar formula and dc bus decompression, by-pass unit is according to the signal automatic switching on received, so that batteries carry out direct current output.Dc bus is not departed from during battery discharging of the present invention, discharge energy feeds back to system dc load and powered.
Description
Technical field
The present invention relates to technical field of direct current power, more particularly, to a kind of batteries online the property checked electric discharge device and
Method.
Background technology
Transformer station or communication base station are that all DC loads of whole transformer station or base station are pacified with DC UPS system
The power supply guarantee of row for the national games, and batteries are core components therein, once occurring ac voltage losing, batteries just turn into
The provider of all loads, batteries once go wrong, and electric power system will paralyse in whole station, cause equipment to stop transport or even weight
Big interruption of service.When straight-flow system is normally run, charger is powered to battery charging and conventional load simultaneously, because of electric power storage
Pond group can not depart from dc bus, therefore need to be in floating charge electricity condition, and long-term floating charging can accumulator property deterioration.Therefore need
Batteries are carried out with the electric discharge of verification property, determines that battery whether there is problem.
Existing verification property discharge technology by a group storage battery group, it is necessary to first depart from dc bus, if now handed over
Electricity, and another set batteries failure are lost in, dc bus decompression can be caused, there is potential safety hazard.Meanwhile, the electric discharge of verification property
Shi Fang electricity energy is converted into thermal energy consumption by the instrument that discharges, and causes very big energy waste, and environmental protection and energy saving is poor.
The problem of there is potential safety hazard and energy waste for the electric discharge of the property checked in the prior art, not yet proposes effective at present
Solution.
The content of the invention
In view of this, it is an object of the invention to provide a kind of batteries property checked electric discharge device and method online, with
Reduce the potential safety hazard in discharge process and save electric energy.
In a first aspect, the embodiments of the invention provide a kind of batteries property checked electric discharge device, including communication link online
The core molar block and core connect holds management module；Core molar block is arranged between batteries and dc bus, and core molar block is with storing
Battery pack and dc bus are electrically connected；Core holds management module, for controlling core molar block to work in core molar formula or non-core
Molar formula；Core molar formula includes core and receives power mode and core capacity charge pattern；Core molar block includes DC/DC converter groups in parallel
And by-pass unit；The charge/discharge transformation that DC/DC converters group is used between batteries and dc bus；In non-core molar formula,
By-pass unit is connected, and DC/DC converters group is in non-operating mode；When core receives power mode, by-pass unit cut-out, DC/DC
Converter group is in discharge mode；In core capacity charge pattern, by-pass unit cut-out, DC/DC converters group is in charge mode；
After charging complete, close DC/DC converters group and connect by-pass unit；In core molar formula and dc bus decompression, bypass
Unit is according to the signal automatic switching on received, so that batteries carry out direct current output.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein,
When core molar formula and ac voltage losing, core holds management module and judges that batteries are not in the batteries of core appearance process with other
Whether voltage difference is less than threshold value in parallel；If it is less, control by-pass unit connection；If it is not, keeping by-pass unit
Cut off and control DC/DC converter groups switch to non-operating mode.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein,
DC/DC converters group includes a two-way DC/DC converter or the different independent DC/DC converters of both direction.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, it is other
Road unit includes gate-controlled switch and control circuit；Control circuit holds management module with core and is connected, for holding management module according to core
Order control gate-controlled switch cut-out or connect.
With reference to one of first aspect and its first, second and third kind of possible embodiment, the embodiments of the invention provide first
4th kind of possible embodiment of aspect, wherein, said apparatus includes multiple core molar blocks；Each core molar block is respectively with one
Individual batteries connection.
With reference to one of first aspect and its first, second and third kind of possible embodiment, the embodiments of the invention provide first
5th kind of possible embodiment of aspect, in addition to：Polling module；Polling module holds management module communication connection with core, uses
Yu Xianghe holds management module and sends core appearance instruction.
Second aspect, the embodiment of the present invention also provides a kind of batteries property checked charging method online, and method is applied to
The batteries property the checked electric discharge device online that any one of first aspect and its each possible embodiment are provided, including：Work as reception
When holding instruction to core, control by-pass unit cut-out, and control DC/DC converter groups to switch to discharge mode；Reaching termination
During condition, control DC/DC converter groups switch to charge mode；After charging complete, DC/DC converters group and company are closed in control
Logical by-pass unit.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of the first of second aspect, in addition to：
In charging process, control DC/DC converter groups are with constant-current discharge.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of second of second aspect, in addition to：
In dc bus decompression during core appearance, control by-pass unit connection, so that batteries carry out direct current output；Held in core
In journey during ac voltage losing, judge whether the voltage difference that batteries are not in the batteries that core holds process with other is less than simultaneously
Join threshold value；If it is less, control by-pass unit connection；If it is not, keeping by-pass unit cut-out and control DC/DC conversion
Device group switches to non-operating mode.
With reference to second aspect, the embodiments of the invention provide the possible embodiment of the third of second aspect, in addition to：
Calculate and preserve the capacity of batteries.
The embodiment of the present invention brings following beneficial effect：Batteries provided in an embodiment of the present invention online put by the property checked
Electric installation and method, hold management module, its center by increasing core molar block and core on the basis of existing DC power system
Molar block includes DC/DC converters group and by-pass unit in parallel, in non-core molar formula, by-pass unit connection, DC/DC conversion
Device group is in non-operating mode；When core receives power mode, by-pass unit cut-out, DC/DC converters group is in discharge mode；
During core capacity charge pattern, by-pass unit cut-out, DC/DC converters group is in charge mode；After charging complete, DC/DC is closed
Converter group simultaneously connects by-pass unit；When power supply trouble occurs for core molar formula and straight-flow system, by-pass unit is according to receiving
Signal automatic switching on；It is realized with a low cost the batteries property checked electric discharge automatic control and the management, drop entirely of straight-flow system
Low production and management cost；Realizing battery, the property checked is discharged online, and can accurately control charging and discharging currents, reduces core
To property discharge test risk；Realize the automatic verification property electric discharge complete to battery of long-range or near-end and charge, during battery discharging not
Need to depart from dc bus, discharge energy feeds back to system dc load and powered, energy-conserving and environment-protective.
Other features and advantages of the present invention will be illustrated in the following description, also, partly be become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structured flowchart of batteries provided in an embodiment of the present invention property checked electric discharge device online；
Fig. 2 is a kind of connection diagram of batteries provided in an embodiment of the present invention property checked electric discharge device online；
Fig. 3 is a kind of flow chart of batteries provided in an embodiment of the present invention property checked charging method online；
Fig. 4 is the flow chart of another batteries provided in an embodiment of the present invention property checked charging method online.
Icon：
10- core molar blocks；11- cores hold management module；21- batteries；22- dc bus；23-DC/DC converter groups；
24- by-pass units；25- polling modules；26-AC/DC charging modules；27- DC loads.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
With the fast development and the continuous improvement of living standards of the people of national economy, people to the demand of electric power increasingly
It is many, more and more higher is required to the continued reliability of power supply.When straight-flow system is normally run, charger fills to batteries simultaneously
Electricity and conventional load are powered, because batteries can not depart from dc bus, therefore need to be in floating charge electricity condition, but long-term floating charging
Plate vulcanizing, dehydration can be caused, deterioration of battery, the lost of life is further exacerbated by.Only discharged by the property checked, can just find out storage
The problem of battery is present.According to inspection procedure, new battery carries out the electric discharge of verification property in every 2~3 years after putting into operation, after running 6 years preferably
Annual to carry out once, battery brand, quality of current transformer station or base station etc. are uneven, and operation may need after 2~3 years
Carrying out transformer station more than once verification property electric discharge, national 110kV grades every half a year has more than 20,000, the mobile base each saved
Quantity of standing is all more than 30,000.The power station or base station designed by two group storage batteries carry out the electric discharge of verification property, standard operation to battery
Two operation maintenance personnels time-consuming 4 working days are at least needed to complete, in addition it is also necessary to the equipment such as discharge instrument are transported into scene, work is safeguarded
Measure quite big.
The technology discharged at present storage battery checking is very backward, mainly there is following shortcoming：
1. the manual work mode taken, automaticity is too low, operating efficiency is extremely low；
2. discharge test instrument is heavy, also easily error stores field connection complicated and time consumption, it is necessary to manually guard monitoring in real time
Battery cell voltage, easily causes monomer and crosses and put, reliability is low；
3. being needed to depart from dc bus by the group storage battery that core holds, lost if occurring exchange in verification property discharge process
Electricity, and another set accumulator failure, can cause dc bus decompression, there is potential safety hazard.
4. the energy of electric discharge is converted into thermal energy consumption, two groups of 104 2V/300Ah lead-acid accumulator by the instrument that discharges
Electric discharge consumption electric energy be 132kWh, equivalent to the one bimestrial power consumption of average family, national power station or base station it is annual because
The electric energy of battery check electric discharge loss is more than million degree of electricity, and environmental protection and energy saving is poor.
Based on this, a kind of batteries provided in an embodiment of the present invention property checked electric discharge device and method online, to reduce
Potential safety hazard in discharge process simultaneously saves electric energy.For ease of understanding the present embodiment, first to institute of the embodiment of the present invention
The property checked electric discharge device describes in detail a kind of disclosed batteries online.
Embodiment 1
The embodiment of the present invention 1 provides a kind of batteries property checked electric discharge device online, and the batteries are checked online
Property electric discharge device be applied to DC UPS system.The batteries shown in Figure 1 property checked electric discharge device online
Structured flowchart, including：Core molar block 10 and core hold management module 11.Core molar block 10 and core hold the company of communicating of management module 11
Connect.
The connection diagram of the batteries shown in Figure 2 property checked electric discharge device online, illustrated therein is core molar
Block is arranged between batteries 21 and dc bus 22, and core molar block is electrically connected respectively with batteries 21 and dc bus 22
Connect.Wherein, core holds management module 11, for controlling core molar block to work in core molar formula or non-core molar formula；Specifically, core holds
Pattern includes core and receives two kinds of power mode and core capacity charge pattern.Above-mentioned non-core molar formula refers to that batteries are in normal work
Operation mode.
Shown in Figure 2, core molar block includes DC/DC converters group 23 and by-pass unit 24 in parallel；DC/DC converters
The charge/discharge transformation that group 23 is used between batteries and dc bus.The DC/DC converters group both can be a two-way DC/DC
Converter or the different independent DC/DC converters of both direction (being respectively used to be charged and discharged).
In non-core molar formula, by-pass unit 24 is connected, and DC/DC converters group 23 is in non-operating mode；In core receiving
During power mode, by-pass unit 24 is cut off, and DC/DC converters group 23 is in discharge mode；In core capacity charge pattern, by-pass unit
24 cut-outs, DC/DC converters group 23 is in charge mode；After charging complete, close DC/DC converters group 23 and connect bypass
Unit 24；In core molar formula and dc bus decompression, by-pass unit 24 is according to the signal automatic switching on received, so that electric power storage
Pond group carries out direct current output.
The difference of the abort situation occurred according to electric power system, can include dc bus decompression and ac voltage losing.Due to
Uninterruptible power system generally includes at least two batteries, when a batteries carry out core appearance, if there is direct current
Bus loss of pressure, represents not only Alternating Current Power Supply partial fault, and the batteries that other non-cores hold break down, and are now badly in need of working as
The batteries that pronucleus holds are powered, no matter therefore the batteries are in electric discharge or charging process, it is necessary to connection bypass immediately
Unit makes it carry out direct current output.
If there is ac voltage losing (the now non-decompression of dc bus), Alternating Current Power Supply partial fault, but other non-cores are represented
The batteries of appearance can provide direct current output, now connection when pronucleus hold batteries by-pass unit make the batteries with
Other batteries are in parallel, it may appear that two kinds of possible situations：When the batteries electric discharge that pronucleus holds is exported or by other electric power storages
Pond group charging.In order to avoid there is situation about being electrically charged, core, which holds management module, to be needed to judge when pronucleus holds battery pack and other
Being not in the voltage differences of the batteries that core holds process, whether to be less than threshold value in parallel (be generation between the multiple batteries of system
The threshold value of charge condition, will not charge less than the threshold value), if it is less, control by-pass unit connection；If not small
In holding by-pass unit is cut off and control DC/DC converter groups switch to non-operating mode (stop core and hold process).
It is understood that core, which holds management module, can continue to monitor the voltage difference between batteries, with electric power storage
The progress of pond group electric discharge, above-mentioned voltage difference can constantly reduce until less than above-mentioned threshold value in parallel, now controlling by-pass unit to connect
It is logical the batteries is added parallel operation.
Two batteries are illustrate only in fig. 2, are connected to core molar block, can be according to actually including in system
Batteries quantity multiple core molar blocks are set, each core molar block is connected with a batteries respectively.Core molar block
By-pass unit includes gate-controlled switch and control circuit；Control circuit holds management module with core and is connected, for holding management mould according to core
The order control gate-controlled switch cut-out of block is connected.
As shown in Fig. 2 adding core molar block and core appearance management module on the basis of original DC power system.
Illustrated in the present embodiment so that core capacitance device includes two-way DC/DC converters and by-pass unit as an example, the by-pass unit is by can
Control switch and control circuit composition, the gate-controlled switch include D.C. contactor or other controllable devices.Above-mentioned two-way DC/DC conversion
Battery can be realized to the discharge and recharge transformation of electrical energy between dc bus, can be opened up by basic Buck/Boost or other conversion
Flutter composition.
Core holds management module and receives the instruction of background monitoring system to determine whether to carry out core appearance, Yong Huke to batteries
Hold control to carry out manual core according to actual conditions, self-timing core appearance plan can also be set.In batteries without core
During appearance (normal operating conditions), core holds management module control core molar block and is operated in bypass mode：By-pass switch is closed, it is two-way
DC/DC conversion is not worked, and Charge Management is carried out to battery pack by the main monitoring of power-supply system.
When core, which holds management module, receives core appearance instruction, core appearance is carried out to batteries I, II in turn, it is whole to improve
The security of system, reduces checking discharging test risk.When carrying out core appearance to batteries, using online discharge mode,
Batteries keep being connected with dc bus, and discharge energy feeds back to system dc load and powered, energy-conserving and environment-protective.
Core appearance for example is carried out to batteries I first, by-pass switch is initially switched off, starts two-way DC/DC converters, it is two-way
DC/DC converters are operated in discharge mode, and the corresponding core capacitance device of batteries I discharges dc bus, now batteries
Electric energy supplied DC load, it is to avoid unnecessary energy waste.Herein it is emphasized that can be by controlling in it
Portion DC/DC power output carrys out the accurate discharge current for controlling batteries, makes batteries with constant-current discharge, automatically according to setting
Fixed end condition, stops electric discharge.In general, end condition has four：Monomer voltage is less than N less than 1.8V, whole group voltage
× 1.8V, discharge time reach that setting value, releasing capacity reach setting value.
After end condition is met, it is determined that electric discharge terminates, now core molar block switchs to charge mode, from dc bus power taking
Charged to batteries I.Two-way DC/DC converters are closed after charging complete, by-pass switch is closed, core holds module I and switched to again
Bypass operating mode, the core of batteries I, which holds, to be terminated.Battery group capacity is calculated simultaneously, can be according to existing calculation
Carry out, obtain may determine that whether the batteries problem of aging occur after battery group capacity, then determine whether to be safeguarded.
Core, which holds administrative unit, can receive and preserve batteries core appearance data and result.After the completion of the core of batteries I appearance, then by above-mentioned
Process carries out core appearance to batteries II.
When the under-voltage power supply trouble of AC or DC bus such as occurs in the property checked discharge process online for batteries, core appearance
Device automatically switches to bypass operating mode, and system dc output safety reliability is high.Wherein whether monitoring system powers
Failure uses mode of the prior art, will not be repeated here.It can realize that batteries are on-line Full by said apparatus
Change the electric discharge of verification property, the existing battery artificial nucleus of straight-flow system can be replaced to hold work completely, straight-flow system is greatly reduced
O＆M cost, improves production efficiency and security；Effective feedback utilizes the energy of battery discharging, and national power station and base station are annual
The tens million of kilowatt hours of electric energy can be saved, while it is also to slow down the consumption of the energy to save electric energy, environmental protection and energy saving is good.
Polling module 25 is also show in fig. 2, and polling module holds management module communication connection with core, managed for holding to core
Manage module and send core appearance instruction.The polling module can also receive the status information of batteries simultaneously.It also show in fig. 2
AC/DC charging modules 26, the AC/DC charging modules are also connected with dc bus, and the other end of the dc bus is connected with direct current
Load 27.
The batteries provided in an embodiment of the present invention property checked electric discharge device online, by existing DC power system
On the basis of increase core molar block and core hold management module, its center molar block includes in parallel DC/DC converters group and bypass is single
Member, in non-core molar formula, by-pass unit connection, DC/DC converters group is in non-operating mode；When core receives power mode,
By-pass unit is cut off, and DC/DC converters group is in discharge mode；In core capacity charge pattern, by-pass unit cut-out, DC/DC becomes
Parallel operation group is in charge mode；After charging complete, close DC/DC converters group and connect by-pass unit；In core molar formula and
When power supply trouble occurs for straight-flow system, by-pass unit is according to the signal automatic switching on received；It is realized with a low cost straight-flow system
The batteries property checked electric discharge automatic control and management entirely, reduces production and management cost；Realize battery in line core
Property is discharged, and can accurately control charging and discharging currents, checking discharging test risk is reduced；Realize that long-range or near-end is automatic
Complete to the battery electric discharge of verification property and charging, without departing from dc bus during battery discharging, discharge energy feeds back to system
DC load is powered, energy-conserving and environment-protective.
Embodiment 2
The embodiment of the present invention 2 provides a kind of batteries property checked charging method, battery shown in Figure 3 online
The flow chart of the online verification property charging method of group, the batteries provided applied to above-described embodiment 1 the property checked electric discharge dress online
Put, this method comprises the following steps：
Step S31, when receiving core appearance instruction, control by-pass unit cut-out, and control DC/DC converters group to switch
To discharge mode.
Step S32, when reaching end condition, control DC/DC converter groups switch to charge mode.
Specific end condition may be referred to the content of above-described embodiment 1.
Step S33, after charging complete, control closes DC/DC converters group and connects by-pass unit.
After charging complete, core molar block switchs to bypass operating mode again.
Further, the flow chart of the batteries shown in Figure 4 property checked charging method online, the above method is also wrapped
Include：Step S41, in dc bus decompression during core appearance, control by-pass unit connection, so that batteries progress direct current is defeated
Go out；In ac voltage losing during core appearance, judge that batteries are not in the voltage difference that core holds the batteries of process with other
Whether value is less than threshold value in parallel；If it is less, control by-pass unit connection；If it is not, keep by-pass unit cut-out and
Control DC/DC converter groups switch to non-operating mode.
Further, the above method also includes：In charging process, control DC/DC converter groups are with constant-current discharge.Enter one
Step, the above method also includes：Calculate and preserve the capacity of batteries.
The batteries provided in an embodiment of the present invention property checked charging method online, when receiving core and holding instruction, control
By-pass unit is cut off, and controls DC/DC converter groups to switch to discharge mode；When reaching end condition, control DC/DC becomes
Parallel operation group switches to charge mode；After charging complete, control closes DC/DC converters group and connects by-pass unit；Can be
The property checked is discharged entirely for Automated condtrol and management of battery group, realizes online verification property electric discharge, and can accurately control charge and discharge
Electric current, reduces checking discharging test risk；Simultaneously in electric discharge without departing from dc bus, discharge energy, which is fed back to, is
System DC load is powered, energy-conserving and environment-protective.
The batteries provided in an embodiment of the present invention property checked charging method online, the battery provided with above-described embodiment
The online verification property electric discharge device of group has identical technical characteristic, so can also solve identical technical problem, reaches identical
Technique effect.
The batteries that the embodiment of the present invention the is provided property checked electric discharge device and the computer program product of method online,
Computer-readable recording medium including storing program code, the instruction that program code includes can be used for performing previous methods reality
The method in example is applied, implements and can be found in embodiment of the method, will not be repeated here.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.To those skilled in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
If above-mentioned functions are realized using in the form of SFU software functional unit and are used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform each of the invention embodiment method all or part of step.And
Foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory
Device (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：Above example, is only the embodiment of the present invention, the skill to illustrate the present invention
Art scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although entering with reference to the foregoing embodiments to the present invention
Go detailed description, it should be understood by those skilled in the art that：Any one skilled in the art takes off in the present invention
In the technical scope of dew, it can still modify to the technical scheme described in previous embodiment or can readily occur in change
Change, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make relevant art
Scheme essence depart from technical scheme of the embodiment of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of batteries property checked electric discharge device online, it is characterised in that core molar block and core including communication connection hold
Management module；
The core molar block is arranged between the batteries and dc bus, the core molar block and the batteries and
The dc bus is electrically connected；The core holds management module, for control the core molar block work in core molar formula or
Non-core molar formula；The core molar formula includes core and receives power mode and core capacity charge pattern；The core molar block includes in parallel
DC/DC converters group and by-pass unit；The DC/DC converters group is used for filling between the batteries and the dc bus
Electric discharge conversion；
In the non-core molar formula, the by-pass unit connection, the DC/DC converters group is in non-operating mode；
When the core receives power mode, the by-pass unit cut-out, the DC/DC converters group is in discharge mode；
In the core capacity charge pattern, the by-pass unit cut-out, the DC/DC converters group is in charge mode；Filling
After the completion of electricity, close the DC/DC converters group and connect the by-pass unit；
In the core molar formula and the dc bus decompression, the by-pass unit according to the signal automatic switching on received,
So that the batteries carry out direct current output.
2. device according to claim 1, it is characterised in that
In the core molar formula and ac voltage losing, the core holds management module and judges that the batteries are not in core with other
Whether the voltage difference of the batteries of appearance process is less than threshold value in parallel；If it is less, controlling the by-pass unit to connect；Such as
Fruit is not less than, and keeps the by-pass unit cut-out and controls the DC/DC converters group to switch to non-operating mode.
3. device according to claim 1, it is characterised in that the DC/DC converters group includes a two-way DC/DC and become
Parallel operation or the different independent DC/DC converters of both direction.
4. device according to claim 1, it is characterised in that the by-pass unit includes gate-controlled switch and control circuit；
The control circuit holds management module with the core and is connected, and the order control for holding management module according to the core is described controllable
Switch cutoff or connection.
5. the device according to claim any one of 1-4, it is characterised in that described device includes multiple core molaies
Block；Each core molar block is connected with the batteries respectively.
6. the device according to claim any one of 1-4, it is characterised in that also include：Polling module；The polling module
Hold management module communication connection with the core, instructed for holding management module transmission core appearance to the core.
7. a kind of batteries property checked charging method online, it is characterised in that it is any that methods described is applied to claim 1-6
The batteries property checked electric discharge device online described in, methods described includes：
When receiving core appearance instruction, control by-pass unit cut-out, and control DC/DC converter groups to switch to discharge mode；
When reaching end condition, the DC/DC converters group is controlled to switch to charge mode；
After charging complete, control closes the DC/DC converters group and connects the by-pass unit.
8. method according to claim 7, it is characterised in that methods described also includes：
In charging process, the DC/DC converters group is controlled with constant-current discharge.
9. method according to claim 7, it is characterised in that methods described also includes：
In dc bus decompression during core appearance, the by-pass unit connection is controlled, so that the batteries carry out direct current
Output；
In ac voltage losing during core appearance, judge that the batteries are not in the electricity that core holds the batteries of process with other
Whether pressure difference is less than threshold value in parallel；If it is less, controlling the by-pass unit to connect；If it is not, keeping the side
Road unit cuts off and controls the DC/DC converters group to switch to non-operating mode.
10. method according to claim 7, it is characterised in that methods described also includes：
Calculate and preserve the capacity of the batteries.
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| WO2019019296A1 (en) | 2019-01-31 |
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