CN108418271A - A kind of Intelligent balancing device of battery pack - Google Patents
A kind of Intelligent balancing device of battery pack Download PDFInfo
- Publication number
- CN108418271A CN108418271A CN201810249873.4A CN201810249873A CN108418271A CN 108418271 A CN108418271 A CN 108418271A CN 201810249873 A CN201810249873 A CN 201810249873A CN 108418271 A CN108418271 A CN 108418271A
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- Prior art keywords
- battery
- battery pack
- voltage
- transformer
- string
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- 230000009514 concussion Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000178 monomer Substances 0.000 abstract description 4
- 230000000875 corresponding effect Effects 0.000 description 4
- 206010010254 Concussion Diseases 0.000 description 3
- 208000031639 Chromosome Deletion Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of Intelligent balancing devices of battery pack, including transformer, rectification amplifier, electric connector and concussion rectification circuit, the primary coil of the transformer is connect with the total voltage after inversion, the secondary coil of transformer is multiple, and multiple secondary coils are connected one to one by electric connector and the often string battery in battery pack, rectification amplifier is additionally provided on the output end of each secondary coil, the primary coil of the transformer is also connect by shaking rectification circuit with battery pack.A kind of Intelligent balancing device of battery pack of the present invention, total voltage flows through the primary coil of transformer after inversion, the magnetic line of force is generated, several secondary coils generate identical alternating voltage, corresponding with often string battery after rectified to be connected, monomer battery voltage is high to be compensated, and the low battery of voltage is compensated, and so that every string battery is obtained identical voltage, by constant-voltage charge process, it is consistent to eventually lead to every string cell voltage, reaches portfolio effect.
Description
【Technical field】
The present invention relates to the technical field of battery, more particularly to a kind of Intelligent balancing device of battery pack.
【Background technology】
Battery (Battery) refer to fill electrolyte solution and metal electrode with cup, slot or other containers for generating electric current or
Chemical energy can be converted to the device of electric energy by the segment space of clad vessel.Currently, by connecting to multiple single batteries
Connection forms battery pack (or battery pack) and provides electric current to load-side with desired voltage.It is single for this battery pack (battery)
The type that body battery is commonly used is chargeable single battery, recharged according to the reduction of charge volume (charge rate) and can
It reuses.In recent years, lithium ion battery is often used as the single battery of this type cell packet.
But it is current, battery pack has the charged state for occurring each single battery when recharge and electric discharge non-uniform
Trend after charging, still has partial monosomy battery to have chargeable residual capacity, it will to shorten the service life of battery.Mesh
The preceding voltage also having by detecting single battery or calculate its charge rate etc. check each single battery charge volume it is non-uniform,
But this method is time-consuming and laborious.In order to solve problem above, it is necessary to a kind of Intelligent balancing device of battery pack is proposed, by simple
Circuit realize each single battery of battery pack charge balancing problem, to extend the service life of battery pack.
【Invention content】
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of Intelligent balancing device of battery pack is provided,
It aims to solve the problem that battery pack has the non-uniform trend of charged state in the prior art, after charging, still has partial monosomy electric
There is chargeable residual capacity in pond, it will the technical issues of shortening the service life of battery.
To achieve the above object, the present invention proposes a kind of Intelligent balancing device of battery pack, including transformer, rectification are put
Big device, electric connector and concussion rectification circuit, the primary coil of the transformer be one and with the total voltage after inversion
The secondary coil of connection, transformer is multiple, and multiple secondary coils pass through the often string battery on electric connector and battery pack
It connects one to one, each secondary coil and the battery being correspondingly connected with constitute a closed circuit, and are each closed back
Road is additionally provided with rectification amplifier on the output end of secondary coil, and the primary coil of the transformer is also by shaking rectification
Circuit is connect with battery pack.
Preferably, the number of turns of the secondary coil is identical, and with the number of turns of primary coil there are proportionate relationship,
So that the sum of DC voltage exported after multiple rectified amplifier rectifications of secondary coil is identical as the total voltage of battery pack or omits
Higher than the total voltage of battery pack.
Preferably, the quantity of the secondary coil is determined by the string number of battery in battery pack, i.e. the number of secondary coil
Amount is identical as the string number of battery.
Preferably, the often string battery in the battery pack is connected in series with, often the positive and negative end of string battery passes through electricity respectively
Connector is connected with the output end of the rectification amplifier connected on corresponding connected secondary coil.
Preferably, one end of the primary coil is connected by shaking the anode of rectification circuit and battery pack, it is primary
The other end of coil and the cathode of battery pack connect.
Beneficial effects of the present invention：Compared with prior art, the Intelligent balancing device of a kind of battery pack provided by the invention,
Reasonable for structure, total voltage flows through the primary coil of transformer after inversion, generates the magnetic line of force, and several secondary coils is caused to generate phase
With alternating voltage, it is correspondings connected with often string battery after rectified, to certain for being less than total voltage/N go here and there battery or multi-string battery into
Row charging, and certain string battery or multi-string battery higher than total voltage/N cannot charge because voltage difference is negative.Because
The electric energy that often string battery is obtained when acquisition is charged is different, the more electric energy of the low acquisition of monomer battery voltage, single battery
Voltage it is high just obtain or do not obtain electric energy less, and by inversion, the process of transformation makes time total voltage during entire balanced
Grade coil obtains energy, and according to law of conservation of energy, entire battery pack can lose electric energy during equilibrium, because of all lists
Body battery is concatenated, that is to say, that battery of often going here and there will lose identical electric energy, in the effect for not considering inversion, rectification, charging
When rate, the electric energy that loses of battery of often going here and there is the same, thus monomer battery voltage is high to compensate, and the low battery of voltage obtains
It to compensation, loses electric energy by the high single battery of voltage after a certain period of time and reduces voltage, and the low single battery of voltage obtains
Voltage is improved to electric energy, every string battery is finally made to obtain identical voltage, by constant-voltage charge process, eventually leads to every string electricity
Cell voltage is consistent, reaches portfolio effect.
The feature and advantage of the present invention will be described in detail by embodiment combination attached drawing.
【Description of the drawings】
Fig. 1 is a kind of circuit connection diagram of the Intelligent balancing device of battery pack of the embodiment of the present invention.
In figure：1- transformers, 11- primary coils, 12- secondary coils, 2- rectification amplifiers, 3- electric connectors, 4- concussions
Rectification circuit, 5- battery packs, 51- batteries.
【Specific implementation mode】
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by accompanying drawings and embodiments, to this
Invention is further elaborated.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention,
The range being not intended to restrict the invention.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to keep away
Exempt from unnecessarily to obscure idea of the invention.
Refering to fig. 1, the embodiment of the present invention provides a kind of Intelligent balancing device of battery pack, including transformer 1, rectification amplification
Device 2, electric connector 3 and concussion rectification circuit 4, the primary coil 11 of the transformer 1 be one and with it is total after inversion
Voltage connects, and the secondary coil 12 of transformer 1 is multiple, and multiple secondary coils 12 are by electric connector 3 and battery pack 5
Often string battery 51 connect one to one, the secondary coil 12 and the battery 51 being correspondingly connected with constitute one and are closed back
Road, and each closed circuit is additionally provided with rectification amplifier 2 on the output end of secondary coil 12, the transformer 1 just
Grade coil 11 is also connect by shaking rectification circuit 4 with battery pack 5.
Further, the number of turns of each secondary coil 12 is identical, and there are ratios with the number of turns of primary coil 11
Relationship so that total voltage of the sum of the DC voltage exported after 12 rectified amplifier of multiple secondary coils, 2 rectification with battery pack 5
Identical or slightly above battery pack 5 total voltage.
Wherein, the quantity of the secondary coil 12 is determined by the string number of battery 51 in battery pack 5, i.e. secondary coil 12
Quantity is identical as the string number of battery 51.
Further, the often string battery 51 in the battery pack 5 is connected in series with, often the positive and negative end difference of string battery 51
It is connected with the output end of the rectification amplifier 2 connected on corresponding connected secondary coil 12 by electric connector 3.
Further, one end of the primary coil 11 is connected by shaking rectification circuit 4 and the anode of battery pack 5
It connects, the other end of primary coil 11 is connect with the cathode of battery pack 5.
The course of work of the present invention：
During the work time, total voltage is become a kind of Intelligent balancing device of battery pack of the present invention by switching circuit modulation
Pulse voltage flows through the primary coil 11 of transformer 1 after inversion, generates the magnetic line of force, and several secondary coils 12 is caused to generate phase
With alternating voltage, it is rectified after with often string battery is correspondings is connected, certain for being less than the total voltage/N quantity of battery 51 (N for) is gone here and there
Battery 51 or multi-string battery 51 charge, and certain string battery 51 or multi-string battery 51 higher than total voltage/N are because voltage difference is
Negative, so cannot charge.Because the electric energy that often string battery is obtained when acquisition is charged is different, 51 voltage of single battery is low
The more electric energy of acquisition, 51 voltage of single battery it is high just obtain or do not obtain electric energy less, and during entire balancedly always
Voltage makes secondary coil obtain energy by the process of inversion, transformation, and according to law of conservation of energy, entire battery pack 5 is in equilibrium
During can lose electric energy because all single batteries 51 are concatenated, that is to say, that often go here and there battery 51 will lose it is identical
Electric energy, when not considering the efficiency of inversion, rectification, charging, the electric energy that loses of battery 51 of often going here and there is the same, thus monomer electricity
51 voltage of pond is high to be compensated, and the low battery 51 of voltage is compensated, by the high single battery of voltage after a certain period of time
51 lose electric energy and reduce voltage, and the low single battery 51 of voltage obtains electric energy and improves voltage, finally makes every string battery 51
Identical voltage is obtained, by constant-voltage charge process, it is consistent to eventually lead to 51 voltages of every string battery, reaches portfolio effect, helps
In the service life for extending battery.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (5)
1. a kind of Intelligent balancing device of battery pack, it is characterised in that：Including transformer (1), rectification amplifier (2), electrical connection
Device (3) and concussion rectification circuit (4), the primary coil (11) of the transformer (1) be one and with total electricity after inversion
The secondary coil (12) of pressure connection, transformer (1) is multiple, and multiple secondary coils (12) pass through electric connector (3) and electricity
Often string battery (51) in pond group (5) connects one to one, and each described secondary coil (12) and the battery that is correspondingly connected with
(51) closed circuit is constituted, and each closed circuit is additionally provided with rectification amplifier on the output end of secondary coil (12)
(2), the primary coil (11) of the transformer (1) is also connect by shaking rectification circuit (4) with battery pack (5).
2. a kind of Intelligent balancing device of battery pack as described in claim 1, it is characterised in that：Each secondary coil
(12) the number of turns is identical, and there are proportionate relationships with the number of turns of primary coil (11) so that multiple secondary coils (12) are rectified
The sum of the DC voltage exported after amplifier (2) rectification is identical as the total voltage of battery pack (5) or slightly above battery pack (5) total
Voltage.
3. a kind of Intelligent balancing device of battery pack as described in claim 1, it is characterised in that：The secondary coil (12)
Quantity determined by the string number of battery (51) in battery pack (5), i.e. the string number phase of the quantity of secondary coil (12) and battery (51)
Together.
4. a kind of Intelligent balancing device of battery pack as described in claim 1, it is characterised in that：In the battery pack (5)
Often string battery (51) be connected in series with, often go here and there battery (51) positive and negative end secondary is connected with corresponding by electric connector (3) respectively
The output end of the rectification amplifier (2) connected on coil (12) connects.
5. a kind of Intelligent balancing device of battery pack as described in claim 1, it is characterised in that：The primary coil (11)
One end connect with the positive of battery pack (5) by shaking rectification circuit (4), the other end and battery pack of primary coil (11)
(5) cathode connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249873.4A CN108418271A (en) | 2018-03-26 | 2018-03-26 | A kind of Intelligent balancing device of battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249873.4A CN108418271A (en) | 2018-03-26 | 2018-03-26 | A kind of Intelligent balancing device of battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108418271A true CN108418271A (en) | 2018-08-17 |
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ID=63133396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810249873.4A Pending CN108418271A (en) | 2018-03-26 | 2018-03-26 | A kind of Intelligent balancing device of battery pack |
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| Country | Link |
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| CN (1) | CN108418271A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4079303A (en) * | 1976-07-28 | 1978-03-14 | The United States Of America As Represented By The United States Department Of Energy | Charging system and method for multicell storage batteries |
| US5666041A (en) * | 1996-08-27 | 1997-09-09 | The University Of Toledo | Battery equalization circuit with ramp converter |
| US20110234164A1 (en) * | 2010-03-29 | 2011-09-29 | Kimihiko Furukawa | Power supply device capable of equalizing electrical properties of batteries |
| CN203933085U (en) * | 2014-05-14 | 2014-11-05 | 广东国光电子有限公司 | A kind of battery pack active equalization device |
| CN104539027A (en) * | 2008-07-09 | 2015-04-22 | 捷通国际有限公司 | Wireless charging system |
| US20160094063A1 (en) * | 2014-09-25 | 2016-03-31 | Texas Instruments Incorporated | Controlling polarity in an active balancing system for a battery |
| CN107658948A (en) * | 2017-11-10 | 2018-02-02 | 国网江苏省电力公司泰州供电公司 | A kind of battery pack balancing charging circuit and its control structure |
| CN208241339U (en) * | 2018-03-26 | 2018-12-14 | 南通宁远自动化科技有限公司 | A kind of Intelligent balancing device of battery pack |
-
2018
- 2018-03-26 CN CN201810249873.4A patent/CN108418271A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4079303A (en) * | 1976-07-28 | 1978-03-14 | The United States Of America As Represented By The United States Department Of Energy | Charging system and method for multicell storage batteries |
| US5666041A (en) * | 1996-08-27 | 1997-09-09 | The University Of Toledo | Battery equalization circuit with ramp converter |
| CN104539027A (en) * | 2008-07-09 | 2015-04-22 | 捷通国际有限公司 | Wireless charging system |
| US20110234164A1 (en) * | 2010-03-29 | 2011-09-29 | Kimihiko Furukawa | Power supply device capable of equalizing electrical properties of batteries |
| CN203933085U (en) * | 2014-05-14 | 2014-11-05 | 广东国光电子有限公司 | A kind of battery pack active equalization device |
| US20160094063A1 (en) * | 2014-09-25 | 2016-03-31 | Texas Instruments Incorporated | Controlling polarity in an active balancing system for a battery |
| CN107658948A (en) * | 2017-11-10 | 2018-02-02 | 国网江苏省电力公司泰州供电公司 | A kind of battery pack balancing charging circuit and its control structure |
| CN208241339U (en) * | 2018-03-26 | 2018-12-14 | 南通宁远自动化科技有限公司 | A kind of Intelligent balancing device of battery pack |
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