CN102403743A - Battery equalizing maintenance instrument of large-sized charging power supply system - Google Patents
Battery equalizing maintenance instrument of large-sized charging power supply system Download PDFInfo
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- CN102403743A CN102403743A CN2010102821052A CN201010282105A CN102403743A CN 102403743 A CN102403743 A CN 102403743A CN 2010102821052 A CN2010102821052 A CN 2010102821052A CN 201010282105 A CN201010282105 A CN 201010282105A CN 102403743 A CN102403743 A CN 102403743A
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Abstract
A battery equalizing maintenance instrument is applied to a battery pack with a battery module management plate. In a loop of each electric core and the battery module management plate, a circuit is branched out to be connected to a connecting socket; the plug of the connecting socket is connected to a mainframe of the battery equalizing maintenance instrument; a main chip of the battery equalizing maintenance instrument is arranged inside the mainframe; the chip is connected with a positive electrode and a negative electrode of each electric core respectively; each electric core is provided with a set of parallelly-connected automatic discharging circuit; the automatic discharging circuit is formed by serially connecting an automatic control part and a resistor; and the automatic discharging circuit is connected with the main chip of the battery equalizing maintenance instrument. The battery equalizing maintenance instrument and the battery equalizing maintenance method effectively solve the maintenance problem of a large-power lithium battery; the maintenance time is short, and only 10 hours is required; the operation is simple, safe and reliable; the maintenance effect is good; in the whole battery, the difference between charge amounts of the electric cores at a charging terminal is controlled within 1 percent; the charge amount of the whole battery reaches 99 percent; and the maintenance expense of the battery is reduced.
Description
Technical field
The present invention relates to large-scale chargeable battery maintenance technology, particularly a kind of battery balanced maintenance instrument.
Background technology
Lithium battery power supply system is the purposes power supply of high-efficiency environment friendly very widely, and it generally can take certain connection in series-parallel to be combined into the battery pack use according to the difference that requires of load and capacity, improves voltage through series connection, improves capacity through parallel connection.Because be the connection in series-parallel together of a lot of batteries; And more or less difference to some extent aspect consistency between the different battery cells, because the carrying capacity between the different different batteries that caused of self discharge difference of battery own and external environment condition in use can produce certain difference, the consistency difference that this variation caused can cause the decline of active volume in use of whole power-supply system; To this situation; Need regularly this capacity volume variance between the battery to be carried out equilibrium, normally battery module is opened to the maintenance of this species diversity at present, each Battery pack is safeguarded; This method time is long; In the market to maintenance time once of large-scale power-supply system usually 3 days time to a week, efficient is low, the labor intensive resource is many.
Summary of the invention
For solving the maintenance issues of above-mentioned high power lithium battery, the present invention provides a kind of battery balanced maintenance instrument.
The battery balanced maintenance instrument of the present invention; Use is on the battery pack of charged pool module management plate; Wherein: on the loop of every electric core and battery module managing plate; Divide expenditure one road to be connected to in the gang socket, by the sequence arrangement of each electric core both positive and negative polarity, the plug of this gang socket is connected on the outside battery balanced maintenance instrument main frame.
Be provided with battery balanced appearance master chip in the said battery balanced maintenance instrument, this chip connects the both positive and negative polarity of each electric core respectively, is provided with the automatic discharge loop of a cover parallel connection simultaneously for each electric core.
Said automatic discharge loop is in series by an automatic control section and a resistance, and control section is connected to battery balanced maintenance instrument master chip automatically.
Said automatic control section is a midget relay.
The course of work of the battery balanced appearance of the present invention is following:
1) connects battery module and battery balanced maintenance instrument through the attachment plug socket;
2) make battery module be in charged state;
3) when arriving the trickle charge state, battery balanced maintenance instrument detects the voltage of each electric core;
4) voltage of a certain electric core of discovery reaches after the demarcation, and battery balanced appearance master chip sends signal to the automatic discharge loop that is connected in parallel on this electricity core, and discharge loop is started working automatically, and this telecommunications gets into slow discharge process;
5) after this electricity core voltage is lower than calibration value, close automatic discharge loop, this electricity core gets into charged state again;
6) through detecting each electric core magnitude of voltage repeatedly, constantly adjust the charge-discharge behavior of each electric core, each the electric core in the entire cell is controlled in 1% in the terminal carrying capacity difference of charging, the carrying capacity of entire cell reaches 99%.
Battery balanced maintenance instrument of the present invention and battery balanced maintaining method have effectively solved the maintenance issues of high power lithium battery, and preventive maintenance time is short, only need 10 hours; Simple to operate, safe and reliable, maintenance effects is good, and the electric core of each in the entire cell is controlled in 1% in the terminal carrying capacity difference of charging, and the carrying capacity of entire cell reaches 99%; Reduced the expense of battery maintenance.
Description of drawings
Fig. 1 is the schematic block diagram of the battery balanced maintenance instrument of the large-scale charge power supply of the present invention system;
Fig. 2 is automatic discharge portion schematic block diagram;
Fig. 3 is the use schematic block diagram of battery balanced maintenance instrument.
Embodiment
Below in conjunction with embodiment battery balanced maintenance instrument of the present invention and battery balanced maintaining method are done detailed explanation.
Fig. 1 is the schematic block diagram of the battery weighing apparatus maintenance instrument of the large-scale charge power supply of the present invention system; Fig. 2 is automatic discharge portion schematic block diagram; Fig. 3 is the use schematic block diagram of battery balanced appearance.
The core of the battery balanced maintenance instrument of the present invention is that (major function is that one road signal is divided into two-way for the connector of both positive and negative polarity through a threeway mode of every group of electricity core from the inside of drawing between every Battery pack both positive and negative polarity; Threeway in the similar water pipeline) is divided into two-way; One the tunnel directly receive battery module management board (claim BMU again; Module management part in the battery management system); (see figure 3) on the aviation socket that battery module enclosure installs is received on another road, and like this, itself can not produce harmful effect maintenance system and battery management system.In the normal use of power-supply system; This aviation socket seal is got up (dustproof discharging water), when power-supply system is safeguarded, in the whole trickle charge of power-supply system; Open this aviation socket and connect outside battery balanced maintenance instrument; The battery that this battery balanced maintenance instrument can be higher to magnitude of voltage (battery balanced maintenance instrument itself has the function that detects voltage, and detected voltage is compared, to obtain maximum voltage) carries out bypass (seeing Fig. 1, Fig. 2); Can reduce like this even progressively eliminate the lack of uniformity between the different battery pack; Finally make the carrying capacity difference between all electric cores be controlled in 1%, make the carrying capacity of single Battery pack all approach 99%, thereby make the homogeneity of each the single Battery pack in the power-supply system better.
This battery balanced maintenance instrument is not being opened battery module, does not dismantle under the situation of battery; Use outside battery balanced maintenance instrument that the battery in the electric motor car is safeguarded, maintenance process needs in charging process, to carry out (because the carrying capacity difference of battery embodies more easily under the charged state) on voltage, and external battery balanced maintenance instrument is to carry bigger balanced by-pass current; Simultaneously cell is detected, at first with each battery module safeguard the aviation socket (with other water proof and dust proof socket also can) open, all connect battery equalized maintenance appearance (because just use during battery maintenance at the aviation jack interface of battery module; So not limited by bulk, not high to waterproof and heat radiation grade requirement yet, so that its balanced discharge electric current can be accomplished is very big; Mainly be that cell voltage is detected, and the higher battery of voltage ratio is discharged, to reach the better purpose of battery consistency); Begin most whole power-supply system is carried out constant current charge, in the time of charging, after cell A voltage reaches 3.6V; Whole system makes 0.02C trickle charge into; The pairing bypass resistance of this Battery pack this moment is opened (see figure 2), will the current bypass of this battery charge be fallen (connecting bypass resistance through the relay adhesive), and by-pass current is 0.02C; After the bypass equalization function is opened; The voltage of A battery can descend to some extent, and when voltage was lower than 3.55V, the bypass equalizing circuit broke off; The A electric current gets into the trickle charge stage again, and the voltage that guarantees this Battery pack like this is all the time about 3.55V～3.60V.When battery B voltage also reached 3.60V, the corresponding bypass equalizing circuit of B battery was opened, and B battery is carried out the action step the same with the A battery.By that analogy, when the voltage of each joint cell all reached between 3.55V～3.60V by the time, the equalized maintenance of this battery module was accomplished.Generally; Be no more than 20% situation of lift face amount according to the carrying capacity difference between the battery pack; This required time of safeguarding reaches 3.6V to safeguarding that end is no more than 10 hours (20% divided by 0.02=10 for 20% capacity volume variance, 0.02C current balance) from first cell voltage
Each automatic control section adopts a miniature relay, relies on the adhesive of miniature relay and breaks off the connecting and disconnecting of controlling bypass resistance; Can certainly adopt other solid-state relay that reaction speed is fast, electric current is bigger and so on.
This patent Special attention will be given to be the mode and the method for the battery balanced maintenance technology of this large-scale charge power supply system, the method that makes an amendment slightly for above voltage and current values is still within the protection range of this patent.
1. the present invention is easy to operate, and is safe and reliable, uses manpower and material resources sparingly
2. the invention enables maintenance cost significantly to reduce; Preventive maintenance time shortens greatly; In the market to maintenance time once of large-scale power-supply system usually 3 days time to a week; The present invention only needs time in an evening to power-supply system once the time of safeguarding, does not influence second day use of electric automobile and large-scale charging electric instrument.
Claims (5)
1. battery balanced maintenance instrument; Use is on the battery pack of charged pool module management plate; It is characterized in that: on the loop of every electric core and battery module managing plate; Divide expenditure one road to be connected in the gang socket, by the sequence arrangement of each electric core both positive and negative polarity, the plug of this gang socket is connected on the outside battery balanced maintenance instrument main frame.
2. battery balanced maintenance instrument according to claim 1; It is characterized in that: be provided with battery balanced appearance master chip in the said battery balanced maintenance instrument; This chip connects the both positive and negative polarity of each electric core respectively, is provided with the automatic discharge loop of a cover parallel connection simultaneously for each electric core.
3. battery balanced maintenance instrument according to claim 2 is characterized in that: said automatic discharge loop is in series by an automatic control section and a resistance, and control section is connected to battery balanced maintenance instrument master chip automatically.
4. battery balanced maintenance instrument according to claim 3 is characterized in that: said automatic control section is a midget relay.
5. battery balanced maintenance instrument according to claim 4 is characterized in that: the course of work of said battery balanced maintenance instrument is following:
1) connects battery module and battery balanced maintenance instrument through the attachment plug socket;
2) make battery module be in charged state;
3) when arriving the trickle charge state, battery balanced maintenance instrument detects the voltage of each electric core;
4) voltage of a certain electric core of discovery reaches after the demarcation, and battery balanced appearance master chip sends signal to the automatic discharge loop that is connected in parallel on this electricity core, and discharge loop is started working automatically, and this telecommunications gets into slow discharge process;
5) after this electricity core voltage is lower than calibration value, close automatic discharge loop, this electricity core gets into charged state again;
6) each electric core magnitude of voltage of detection repeatedly through not stopping is constantly adjusted the charge-discharge behavior of each electric core, and each the electric core in the entire cell is controlled in 1% in the terminal carrying capacity difference of charging, and the carrying capacity of entire cell reaches 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102821052A CN102403743A (en) | 2010-09-15 | 2010-09-15 | Battery equalizing maintenance instrument of large-sized charging power supply system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102821052A CN102403743A (en) | 2010-09-15 | 2010-09-15 | Battery equalizing maintenance instrument of large-sized charging power supply system |
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| CN102403743A true CN102403743A (en) | 2012-04-04 |
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| CN2010102821052A Pending CN102403743A (en) | 2010-09-15 | 2010-09-15 | Battery equalizing maintenance instrument of large-sized charging power supply system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401283A (en) * | 2013-07-25 | 2013-11-20 | 南方电网科学研究院有限责任公司 | Battery management device for energy storage system |
| CN104505892A (en) * | 2014-12-30 | 2015-04-08 | 贵州省电子工业研究所 | Intelligent control system of charging and discharging battery pack |
| CN106410895A (en) * | 2016-09-27 | 2017-02-15 | 北京新能源汽车股份有限公司 | Battery balancing device, automobile battery balancing system and balancing method |
| CN116073492A (en) * | 2023-04-04 | 2023-05-05 | 江苏纳通能源技术有限公司 | Passive balance control method between battery cells |
| CN116461387A (en) * | 2023-04-04 | 2023-07-21 | 常州汉姆智能科技有限公司 | Unmanned aerial vehicle battery serial connection charge balance circuit |
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| CN101017986A (en) * | 2006-12-29 | 2007-08-15 | 哈尔滨工业大学 | Monocase battery voltage balance method and balancer in the charging/discharging process of the dynamic battery group |
| CN101425694A (en) * | 2008-12-10 | 2009-05-06 | 吕成学 | Equalized charging apparatus used for series batteries |
| CN101534017A (en) * | 2008-01-02 | 2009-09-16 | 何岳明 | Charge-discharge protection circuit for a plurality of lithium batteries |
| WO2009147809A1 (en) * | 2008-06-02 | 2009-12-10 | パナソニック株式会社 | Imbalance identifying circuit, power source apparatus and imbalance identification method |
| CN201774293U (en) * | 2010-09-15 | 2011-03-23 | 河南科隆集团有限公司 | Battery equilibrium maintenance apparatus of large charge power supply |
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2010
- 2010-09-15 CN CN2010102821052A patent/CN102403743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101017986A (en) * | 2006-12-29 | 2007-08-15 | 哈尔滨工业大学 | Monocase battery voltage balance method and balancer in the charging/discharging process of the dynamic battery group |
| CN101534017A (en) * | 2008-01-02 | 2009-09-16 | 何岳明 | Charge-discharge protection circuit for a plurality of lithium batteries |
| WO2009147809A1 (en) * | 2008-06-02 | 2009-12-10 | パナソニック株式会社 | Imbalance identifying circuit, power source apparatus and imbalance identification method |
| CN101425694A (en) * | 2008-12-10 | 2009-05-06 | 吕成学 | Equalized charging apparatus used for series batteries |
| CN201774293U (en) * | 2010-09-15 | 2011-03-23 | 河南科隆集团有限公司 | Battery equilibrium maintenance apparatus of large charge power supply |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401283A (en) * | 2013-07-25 | 2013-11-20 | 南方电网科学研究院有限责任公司 | Battery management device for energy storage system |
| CN104505892A (en) * | 2014-12-30 | 2015-04-08 | 贵州省电子工业研究所 | Intelligent control system of charging and discharging battery pack |
| CN106410895A (en) * | 2016-09-27 | 2017-02-15 | 北京新能源汽车股份有限公司 | Battery balancing device, automobile battery balancing system and balancing method |
| CN106410895B (en) * | 2016-09-27 | 2019-07-09 | 北京新能源汽车股份有限公司 | A kind of battery balanced device, the equal balance system of automobile batteries and equalization methods |
| CN116073492A (en) * | 2023-04-04 | 2023-05-05 | 江苏纳通能源技术有限公司 | Passive balance control method between battery cells |
| CN116461387A (en) * | 2023-04-04 | 2023-07-21 | 常州汉姆智能科技有限公司 | Unmanned aerial vehicle battery serial connection charge balance circuit |
| CN116461387B (en) * | 2023-04-04 | 2023-10-24 | 常州汉姆智能科技有限公司 | Unmanned aerial vehicle battery serial connection charge balance circuit |
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Application publication date: 20120404 |