CN104362693B - Method and device for mutual charging and discharging between battery packs - Google Patents
Method and device for mutual charging and discharging between battery packs Download PDFInfo
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- CN104362693B CN104362693B CN201410624350.5A CN201410624350A CN104362693B CN 104362693 B CN104362693 B CN 104362693B CN 201410624350 A CN201410624350 A CN 201410624350A CN 104362693 B CN104362693 B CN 104362693B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007599 discharging Methods 0.000 title claims abstract description 9
- 238000004146 energy storage Methods 0.000 claims description 59
- 230000002441 reversible effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of batteries, and provides a method and a device for mutual charging and discharging between battery packs. Wherein the device includes: the negative electrodes between the battery packs are connected in sequence; the negative poles of the DC sides of the AC/DC converters are respectively connected with the positive poles of the corresponding battery packs, the positive poles of the DC sides between the AC/DC converters are sequentially connected, and the AC sides of the AC/DC converters are respectively connected into an alternating current power grid; the working mode of the AC/DC bidirectional converter comprises a charging mode and an inversion mode, wherein the charging mode is a mode of taking power from a power grid, and the inversion mode is a mode of feeding back energy to the power grid; a charge-discharge loop is formed between every two battery packs, and mutual charge and discharge are realized. The technical scheme provided by the invention has the advantages of small power distribution, good energy-saving effect, low equipment cost, simple operation and high production efficiency.
Description
【Technical field】
The present invention relates to cell art, the method and dress of mutual discharge and recharge between more particularly to a kind of set of cells
Put.
【Background technology】
In manufacturing process's later stage in set of cells production process, need to carry out charge-discharge test to set of cells, to verify electricity
The quality that connects between core, battery management system (BMS, Battery Management System) work whether normal, battery
Whether pool-size is up to standard etc., and battery has specific capacity when needing to ensure that set of cells is delivered.
As equipment investment is high, power consumption is big, part producer is using series resistance, power supply, electricity between two set of cells
The modes such as sub- load, two-way DC/DC changers are charged or discharge, and improve energy consumption and equipment investment to a certain extent, but
The problems such as equipment still suffers from larger energy consumption, control complexity, inefficiency, poor-performing, poor reliability, this charge and discharge system is not
Suitable for use of large-scale production.
Therefore, in the urgent need to develop it is a kind of with electrical power is little, good energy-conserving effect, equipment cost it is low, simple to operate and raw
The method for producing mutual discharge and recharge between the set of cells of efficiency high.
【The content of the invention】
The method and apparatus that the technical problem to be solved in the present invention is to provide mutual discharge and recharge between a kind of set of cells, which is matched somebody with somebody
Electrical power is little, good energy-conserving effect, equipment cost is low, simple to operate and production efficiency is high.
The present invention is adopted the following technical scheme that：
The device of mutual discharge and recharge between a kind of set of cells, described device include：
At least two set of cells, the negative pole between the set of cells are sequentially connected；And
The AC/DC changer corresponding with the set of cells quantity, the DC sides negative pole of the AC/DC changers respectively with institute
Corresponding battery anode is connected, and the DC sides positive pole between AC/DC changers is sequentially connected, the AC sides difference of AC/DC changers
Incoming transport electrical network；The mode of operation of AC/DC reversible transducers includes charge mode and inverter mode, the charge mode be from
The pattern of electrical network power taking, the inverter mode are pattern of the feedback energy to AC network；
A charging and discharging circuit is formed between each two set of cells, discharge and recharge each other is realized.
Further, the DC sides positive pole between the AC/DC changers is respectively connected to dc bus；Described device also includes
One energy-storage module, the side of the energy-storage module are connected with the negative pole of set of cells；The opposite side of energy-storage module also accesses described straight
Stream bus.
Further, the energy-storage module is energy-storage battery group or energy storage AC/DC changers；The energy-storage module is using storage
During energy set of cells, energy-storage battery group positive pole accesses dc bus, and energy-storage battery group negative pole is connected with dc bus negative pole；The storage
When energy module adopts energy storage AC/DC changers, the AC side joints of energy storage AC/DC changers enter AC network, energy storage AC/DC changers
DC sides positive poles access dc bus, the DC sides negative pole of energy storage AC/DC changers is connected with dc bus negative pole.
Further, the charge mode is the pattern from AC network power taking, and the inverter mode is arrived for feedback energy
The pattern of AC network.
Further, the AC/DC changers and energy storage AC/DC changers are AC/DC reversible transducers.
Further, the DC sides voltage and current of the AC/DC changers is adjustable, and the charge and discharge mode of set of cells includes perseverance
Stream discharge and recharge, constant pressure discharge and recharge and invariable power discharge and recharge, DC side voltage of the charge and discharge mode by regulation AC/DC changers
Realize with electric current.
Present invention also offers a kind of method for being applied to mutual discharge and recharge between the set of cells of said apparatus, including it is as follows
Step：
When needing set of cells E to charge to set of cells F, AC/DC changer E are set as into charge mode, AC/DC changer F
It is set as inverter mode, DC side negative pole → AC/DC changer of the direction of current flow for set of cells E positive pole → AC/DC changer E
The DC sides negative pole of the DC sides positive pole of the DC sides positive pole of E → AC/DC changer F → AC/DC changer F → set of cells F positive pole → electricity
Pond group F negative pole → set of cells E negative pole, energy are transferred to set of cells F from set of cells E；
When needing set of cells F to charge to set of cells E, AC/DC changer F are set as into charge mode, AC/DC changer E
It is set as inverter mode, DC side negative pole → AC/DC changer of the direction of current flow for set of cells F positive pole → AC/DC changer F
The DC sides negative pole of the DC sides positive pole of the DC sides positive pole of F → AC/DC changer E → AC/DC changer E → set of cells E positive pole → electricity
Pond group E negative pole → set of cells E negative pole, energy are transferred to set of cells E from set of cells F；
Wherein, the charge mode is the pattern from electrical network power taking, and the inverter mode is feedback energy to AC network
Pattern.
Further, when the DC sides positive pole between AC/DC changers is respectively connected to dc bus, the charge mode is
From the pattern of AC network power taking, the inverter mode is pattern of the feedback energy to AC network；
When DC bus-bar voltage is less than minimum predetermined limit value, the energy storage AC/DC changers is set to into charge mode, is
Dc bus supplements energy；When DC bus-bar voltage is higher than highest pre-set limit, the energy storage AC/DC changers are set to inverse
Change pattern, energy is transferred out of from dc bus.
Further, methods described also includes：The DC sides voltage and current of AC/DC changers is adjusted, set of cells is carried out
Constant current charge-discharge, constant pressure discharge and recharge or invariable power discharge and recharge.
Compared with prior art, the beneficial effects of the present invention is：
1., by several AC/DC changers of connecting between set of cells, the mutual charging and discharging between set of cells is realized,
To meet set of cells production test, aging required charging/discharging function；
2. the characteristic of set of cells itself energy storage characteristic and AC/DC changer feedback grids is utilized, battery production survey is reduced
Equipment during examination matches somebody with somebody electrical power and cost, reduces test energy consumption；
3., using the automatic reverse function of AC/DC changers, the charge-discharge test of at least two Battery packs once can be carried out, and
Battery need not be manually changed, simple to operate, testing efficiency is high.
【Description of the drawings】
Fig. 1 is the structured flowchart of mutual charge and discharge device between the double cell group that the embodiment of the present invention 1 is provided；
Fig. 2 is the mode of operation schematic diagram that set of cells 1 charges to set of cells 2 in Fig. 1；
Fig. 3 is the mode of operation schematic diagram that set of cells 2 charges to set of cells 1 in Fig. 1；
Fig. 4 is the structured flowchart of mutual charge and discharge device between many set of cells that the embodiment of the present invention 2 is provided；
Fig. 5 is structured flowchart when energy-storage module is energy-storage battery group in Fig. 4；
Fig. 6 is structured flowchart when energy-storage module is energy storage AC/DC changers in Fig. 4.
【Specific embodiment】
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
A kind of device of mutual discharge and recharge between set of cells is embodiments provided, the device includes：At least two
Set of cells, the negative pole between set of cells are sequentially connected；And the AC/DC changer corresponding with set of cells quantity, AC/DC conversion
The DC sides negative pole of device is connected with corresponding battery anode respectively, and the DC sides positive pole between AC/DC changers is sequentially connected,
The AC sides of AC/DC changers are respectively connected to AC network；The mode of operation of AC/DC reversible transducers includes charge mode and inversion
Pattern, charge mode are the pattern from electrical network power taking, and inverter mode is pattern of the feedback energy to electrical network；Each two set of cells it
Between form a charging and discharging circuit, realize discharge and recharge each other.
Wherein, the quantity of set of cells can be 2,3,4,5 it is even more many, the present invention is not limited to this.
As long as additionally, technical characteristic involved in invention described below each embodiment is each other not
Constitute conflict can just be mutually combined.
Embodiment 1：
A kind of device of mutual discharge and recharge between set of cells is present embodiments provided, wherein, the quantity of set of cells is 2,
It is set of cells 1 and set of cells 2 respectively, the quantity of AC/DC changers is also 2, is AC/DC changers 1 and AC/DC conversion respectively
Device 2.Below the present embodiment is described in further details：
As shown in figure 1, the device of mutually discharge and recharge includes set of cells 1, set of cells between the set of cells of the present embodiment offer
2nd, AC/DC changers 1 and AC/DC changers 2, the negative pole connection of the negative pole and set of cells 2 of set of cells 1, AC/DC changers 1
DC sides negative pole is connected with the positive pole of set of cells 1, and the DC sides negative pole of AC/DC changers 2 is connected with the positive pole of set of cells 2, and AC/DC becomes
The DC sides positive pole of parallel operation 1 is connected with the DC sides positive pole of AC/DC changers 2, the AC sides of AC/DC changers 1 and AC/DC changers 2
It is respectively connected to AC network.A charging and discharging circuit is formed between set of cells 1 and set of cells 2, discharge and recharge each other is realized.
Wherein, AC/DC changers 1 and AC/DC changers 2 are the AC/DC reversible transducers of energy capable of bidirectional flowing,
Four-quadrant rectifier is, is widely used in energy storage, field of wind power generation, the charge mode in its mode of operation can be from AC sides
(AC network) extracts energy, is output as DC, that is, realizes rectifier function；Inverter mode in its mode of operation can be by DC sides energy
AC sides AC network is fed back to after amount inversion, i.e., similar to the function of parallel network power generation.Charge mode is from electrical network power taking
Pattern, inverter mode are pattern of the feedback energy to electrical network, and its energy Flow direction (namely change of mode of operation) can basis
External environment changes or backstage setting is automatically obtained.
The DC sides voltage and current of AC/DC changers 1 and AC/DC changers 2 is adjustable, by adjusting AC/DC changers 1
With the DC sides voltage and current of AC/DC changers 2, realize the constant current charge-discharge of set of cells 1 and set of cells 2, constant pressure discharge and recharge and
The charge and discharge modes such as invariable power discharge and recharge.
The method that the present embodiment additionally provides mutual discharge and recharge between a kind of set of cells, namely the work side of said apparatus
Method：
(1) when set of cells 1 charges to set of cells 2, AC/DC changers 1 are set as the charging mould from AC network power taking
Formula, AC/DC changers 2 are set as feedback energy to the mode inverter pattern of AC network, and the pressure drop of AC/DC changers 2 is equal to
Voltage of 1 voltage of set of cells plus AC/DC changers 1, then the voltage for deducting set of cells 2.Energy Flow direction and electric current flowing
Direction refer to Fig. 2, and wherein direction of current flow becomes for the DC sides negative pole → AC/DC of 1 positive pole of set of cells → AC/DC changers 1
The DC sides negative pole of the DC sides positive pole → AC/DC changers 2 of the DC sides positive pole → AC/DC changers 2 of parallel operation 1 → 2 positive pole of set of cells
2 negative poles of → set of cells → set of cells, 1 negative pole, energy are transferred to set of cells 2 from set of cells 1, realize that set of cells 1 is filled to set of cells 2
Electricity；
(2) when set of cells 2 charges to set of cells 1, the mode of operation of two AC/DC changers is exchanged, i.e. AC/DC conversion
Device 1 is operated in inverter mode, and AC/DC changers 2 are operated in charge mode.Energy Flow direction and direction of current flow refer to
Fig. 3, energy are transferred to set of cells 1 from set of cells 2, realize that set of cells 2 charges to set of cells 1.
The present embodiment realizes filling mutually between set of cells by 2 AC/DC changers of connecting between 2 set of cells
Electricity and electric discharge, to meet set of cells production test, aging required charging/discharging function；Using set of cells itself energy storage characteristic and
The characteristic of AC/DC changer feedback grids, reduces equipment when battery production is tested with electrical power and cost, reduces test
Energy consumption；Using the automatic reverse function of AC/DC changers, the charge-discharge test of at least two Battery packs can be once carried out, and is not required to
Battery is changed manually, and simple to operate, testing efficiency is high.
Embodiment 2：
A kind of device of mutual discharge and recharge between set of cells is present embodiments provided, as shown in figure 4, the wherein number of set of cells
Measure as 4, be set of cells 1, set of cells 2, set of cells 3 and set of cells 4 respectively, the quantity of AC/DC changers is also 4, respectively
It is AC/DC changers 1, AC/DC changers 2, AC/DC changers 3 and AC/DC changers 4.Below the present embodiment is done further
Describe in detail：
As different from Example 1, in the present embodiment, the DC sides positive pole of all AC/DC changers accesses dc bus,
And the device of the present embodiment is provided with energy-storage module, energy-storage module is used to guaranteeing stablizing in charge and discharge process dc bus.Storage
The side of energy module is connected with the negative pole of all set of cells, and the opposite side of energy-storage module also accesses dc bus.In the present embodiment
The charge mode of AC/DC changers is the pattern from AC network power taking, and inverter mode is mould of the feedback energy to AC network
Formula.
In the present embodiment, energy-storage module is energy-storage battery group or energy storage AC/DC changers；As shown in figure 5, energy-storage module is adopted
During with energy-storage battery group, energy-storage battery group positive pole accesses dc bus, and energy-storage battery group negative pole is connected with dc bus negative pole；Such as
Shown in Fig. 6, when energy-storage module adopts energy storage AC/DC changers, the AC side joints of energy storage AC/DC changers enter AC network, energy storage
The DC sides positive pole of AC/DC changers accesses dc bus, DC sides negative pole and the dc bus negative pole phase of energy storage AC/DC changers
Even.Similar to Example 1, above-mentioned AC/DC changers are AC/DC reversible transducers.
The DC sides voltage and current of all AC/DC changers is adjustable, by adjust AC/DC changers DC sides voltage and
Electric current, realizes the charge and discharge modes such as constant current charge-discharge between set of cells, constant pressure discharge and recharge and invariable power discharge and recharge.
Between the set of cells of the present embodiment, the method for work of mutual charge and discharge device is similar with the method in embodiment 1, this
Place repeats no more.Energy-storage module is used to guarantee stablizing in charge and discharge process dc bus DC bus-bar voltage fluctuation occur
It is or the AC/DC changers on the battery pack of connecting as two tested set of cells are in simultaneously charge or discharge state
Operation irregularity, and energy storage AC/DC changers or energy-storage battery group can play and clamped effect is adjusted to DC bus-bar voltage.
When DC bus-bar voltage is less than minimum predetermined limit value, energy storage AC/DC changers are set to into charge mode, are that dc bus is supplemented
Energy；When DC bus-bar voltage be higher than highest pre-set limit when, energy storage AC/DC changers are set to into inverter mode, by energy from
Dc bus is transferred out of.Each is test for set of cells under the control of AC/DC reversible transducers, is capable of achieving charge function,
Battery pack power electric discharge can be fed back to dc bus, so can realize that the charge and discharge electro-detection function of many set of cells is needed simultaneously
Ask.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of embodiment can be logical
Program is crossed to instruct the hardware of correlation to complete, the program can be stored in a computer-readable recording medium, storage medium
Can include：Read only memory (ROM, Read Only Memory), random access memory (RAM, Random Access
Memory), disk or CD etc..
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (6)
1. between a kind of set of cells mutual discharge and recharge device, it is characterised in that described device includes：
At least two set of cells, the negative pole between the set of cells are sequentially connected；And
The AC/DC changer corresponding with the set of cells quantity, the DC sides negative pole of the AC/DC changers respectively with it is corresponding
Battery anode be connected, the DC sides positive pole between AC/DC changers is sequentially connected, and the AC sides of AC/DC changers are respectively connected to
AC network；The mode of operation of AC/DC reversible transducers includes charge mode and inverter mode, and the charge mode is from electrical network
The pattern of power taking, the inverter mode are pattern of the feedback energy to electrical network；
A charging and discharging circuit is formed between each two set of cells, discharge and recharge each other is realized；
DC sides positive pole between the AC/DC changers is respectively connected to dc bus；Described device also includes an energy-storage module, institute
State the side of energy-storage module to be connected with the negative pole of set of cells；The opposite side of energy-storage module also accesses the dc bus；
The energy-storage module is energy-storage battery group or energy storage AC/DC changers；When the energy-storage module adopts energy-storage battery group, storage
Energy battery anode accesses dc bus, and energy-storage battery group negative pole is connected with dc bus negative pole；The energy-storage module is using storage
During energy AC/DC changers, the AC side joints of energy storage AC/DC changers enter AC network, and the DC sides positive pole of energy storage AC/DC changers connects
Enter dc bus, the DC sides negative pole of energy storage AC/DC changers is connected with dc bus negative pole.
2. between set of cells as claimed in claim 1 mutual discharge and recharge device, it is characterised in that the AC/DC changers
AC/DC reversible transducers are with energy storage AC/DC changers.
3. between set of cells as claimed in claim 1 mutual discharge and recharge device, it is characterised in that the AC/DC changers
DC sides voltage and current it is adjustable, the charge and discharge mode of set of cells includes constant current charge-discharge, constant pressure discharge and recharge and invariable power charge and discharge
Electricity, the charge and discharge mode are realized by adjusting the DC sides voltage and current of AC/DC changers.
4. a kind of method for being applied to mutual discharge and recharge between the set of cells of claim 1-3 any one described device, its feature
It is to comprise the steps：
When needing set of cells E to charge to set of cells F, AC/DC changer E are set as into charge mode, AC/DC changers F settings
For inverter mode, direction of current flow is the DC sides negative pole → AC/DC changer E's of set of cells E positive pole → AC/DC changer E
The DC sides negative pole of the DC sides positive pole of DC sides positive pole → AC/DC changer F → AC/DC changer F → set of cells F positive pole → set of cells
F negative poles → set of cells E negative pole, energy are transferred to set of cells F from set of cells E；
When needing set of cells F to charge to set of cells E, AC/DC changer F are set as into charge mode, AC/DC changers E settings
For inverter mode, direction of current flow is the DC sides negative pole → AC/DC changer F's of set of cells F positive pole → AC/DC changer F
The DC sides negative pole of the DC sides positive pole of DC sides positive pole → AC/DC changer E → AC/DC changer E → set of cells E positive pole → set of cells
E negative poles → set of cells E negative pole, energy are transferred to set of cells E from set of cells F；
Wherein, the charge mode is the pattern from electrical network power taking, and the inverter mode is pattern of the feedback energy to electrical network.
5. between set of cells as claimed in claim 4 mutual discharge and recharge method, it is characterised in that when AC/DC changers it
Between DC sides positive pole when being respectively connected to dc bus, the charge mode is the pattern from AC network power taking, the inversion mould
Formula is pattern of the feedback energy to AC network；
When DC bus-bar voltage is less than minimum predetermined limit value, the energy storage AC/DC changers is set to into charge mode, is direct current
Bus supplements energy；When DC bus-bar voltage is higher than highest pre-set limit, the energy storage AC/DC changers are set to into inversion mould
Formula, energy is transferred out of from dc bus.
6. between the set of cells as described in claim 4 or 5 mutual discharge and recharge method, it is characterised in that methods described is also wrapped
Include：
The DC sides voltage and current of AC/DC changers is adjusted, constant current charge-discharge, constant pressure discharge and recharge or permanent work(are carried out to set of cells
Rate discharge and recharge.
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| CN201410624350.5A CN104362693B (en) | 2014-11-07 | 2014-11-07 | Method and device for mutual charging and discharging between battery packs |
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| CN201410624350.5A CN104362693B (en) | 2014-11-07 | 2014-11-07 | Method and device for mutual charging and discharging between battery packs |
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| JP2016170000A (en) * | 2015-03-12 | 2016-09-23 | 日立マクセル株式会社 | Battery testing device and operation method therefor |
| CN106443456A (en) * | 2016-07-15 | 2017-02-22 | 上海汪青自动化科技有限公司 | Battery charging and discharging test island with self-balancing function |
| CN106371028A (en) * | 2016-07-15 | 2017-02-01 | 上海汪青自动化科技有限公司 | Battery charging and discharging test system and method having self-balancing function |
| CN108462208B (en) * | 2018-04-09 | 2024-06-11 | 深圳英飞源技术有限公司 | Power supply system and aging method of power supply module thereof |
| CN109116166B (en) * | 2018-07-26 | 2021-04-16 | 国网山东省电力公司莱芜供电公司 | System and method for testing transformer winding by utilizing broadband output of charging pile |
| CN108680871A (en) * | 2018-07-27 | 2018-10-19 | 深圳英飞源技术有限公司 | The aging method of two-way changing power module system and its power module |
| CN110758173B (en) * | 2019-10-25 | 2021-06-15 | 广东维可特科技有限公司 | Control method and device of charging and discharging detection system and storage medium |
| CN112993418B (en) * | 2019-12-18 | 2023-07-14 | 比亚迪股份有限公司 | Energy storage system |
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| JP2005057826A (en) * | 2003-08-01 | 2005-03-03 | Masayuki Hattori | Charger/discharger, charging/discharging method, and device for evaluating characteristics of secondary battery |
| JP5722058B2 (en) * | 2011-01-26 | 2015-05-20 | 富士通テレコムネットワークス株式会社 | Charge / discharge test system |
| CN102447285A (en) * | 2011-10-10 | 2012-05-09 | 南方电网科学研究院有限责任公司 | High-capacity battery converter and control method thereof |
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