CN201490741U - Battery balanced charging device - Google Patents
Battery balanced charging device Download PDFInfo
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- CN201490741U CN201490741U CN2009202045887U CN200920204588U CN201490741U CN 201490741 U CN201490741 U CN 201490741U CN 2009202045887 U CN2009202045887 U CN 2009202045887U CN 200920204588 U CN200920204588 U CN 200920204588U CN 201490741 U CN201490741 U CN 201490741U
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Abstract
The utility model discloses a battery discloses a battery balanced charging device, which is used for charging for the battery containing at least one battery package, and the battery package is connected with a plurality of battery cells in serial; the battery balanced charging device comprises a main power supply which conducts overall charging for the battery, an auxiliary power supply which conducts supplementary charging for the battery, a gating circuit which connects the auxiliary power supply with the battery cell of the battery package in a gating way, and an acquisition and control circuit; the acquisition and control circuit is used for collecting the voltage value of the battery cell of the battery package and determining a battery cell set to be balanced according to the acquisition result, wherein, the battery cell set to be balanced comprises the battery cell in the battery package, or comprises two adjacent battery cells or more in the battery package, and the acquisition and control circuit is used for controlling the charging gating circuit to connect the auxiliary power supply with the battery cell set to be balanced, and controlling the output voltage value of the auxiliary power supply to be adjusted to the charging voltage required by the battery cell set to be balanced, and charging the battery cell set to be balanced. The utility model has small charging energy consumption, and fast balancing speed.
Description
Technical field
The utility model relates to battery boosting technology, specifically, relates to a kind of device for equalizing charge of battery.
Background technology
Existing cell balancing can be divided into the method for bypass and energy transfer method substantially.The method for bypass is when certain monomer electricity core overtension the time, add a bypass resistance thereon, bleed off unnecessary energy, make global voltage reach balance, this method belongs to the complete energy loss-type, and because the heat that bypass resistance produces can not be applied to jumbo battery, this method is more common on the small-capacity cells management system, and general by-pass current is in 200mA.The energy transfer method is when certain only electric core overtension its energy to be transferred on the lower electric core of other voltage by internal DC-DC (DC-to-DC) circuit, the conversion efficiency of this method depends on the efficient and the transfer algorithm of DC-DC translation circuit, under the extreme difference situation, as the energy of electric core first segment being transferred to final section, its energy is incited somebody to action nearly all loss in change-over circuit, its circuit complexity, the more high unfavorable factor of failure rate also cause this technology to be difficult to popularize in addition.Balancing technique is a technical bottleneck of present battery management system all the time.
The utility model content
Because above-mentioned background, the utility model provides a kind of device for equalizing charge of battery, can the non-dissipative equalizing mode realize equalizing charge of battery, and balancing speed is fast.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of device for equalizing charge of battery, be used to the battery charge that contains at least one power brick, described power brick is in series with a plurality of electric cores, described device comprises the main power source that described battery is carried out whole charging, described power brick is carried out the accessory power supply of boost charge, described accessory power supply gated nature is connected to the charging gating circuit of each the electric core in the described power brick, and acquisition control circuit, described acquisition control circuit be used for gathering described power brick each electric core magnitude of voltage and determine to treat balanced electric core group according to collection result, describedly treat that balanced electric core group comprises an electric core in the power brick, perhaps comprise the electric core of two or more adjacency in the power brick, and be used to control described charging gating circuit with described accessory power supply and describedly treat that balanced electric core winding is logical, and control accessory power supply output voltage values is adjusted into and treats the required charging voltage of balanced electric core group, to treat that to described balanced electric core group charges.
In a kind of embodiment of said apparatus, described battery contains a plurality of power brick, and each power brick connects a described accessory power supply.
In a kind of embodiment of said apparatus, described acquisition control circuit comprises Programmable Logic Controller or single-chip microcomputer.
In a kind of embodiment of said apparatus, described charging gating circuit comprises gate-controlled switch, and described gate-controlled switch is triode, metal-oxide-semiconductor or relay.
In a kind of embodiment of said apparatus, described charging gating circuit also comprises and fuse, diode or the fuse of described gate-controlled switch serial connection and the group of connecting of diode.
In a kind of embodiment of said apparatus, described battery is a power lithium-ion battery.
In a kind of embodiment of said apparatus, the collection number of, lines of described acquisition control circuit is that the electric core quantity in the described battery adds 1, wherein, gather the utmost point that circuit is connected described battery for one, other gather another utmost point that circuit is connected to each the electric core in the described battery.
In a kind of embodiment of said apparatus, in each power brick, the quantity of described charging gating circuit is 2 times of the interior electric core quantity of power brick, per two charging gating circuits are a pair of, a charging gating circuit in a pair of charging gating circuit connects a utmost point of an electric core, and another charging gating circuit connects another utmost point of this electricity core.
In a kind of embodiment of said apparatus, be connected to the described of accessory power supply by charging gating circuit gating and treat that balanced electric core group is that maximum is treated balanced electric core group.
The utility model determines to treat balanced electric core group by acquisition control circuit, treats balanced electric core group by charging gating circuit gating accessory power supply and carries out boost charge, thereby realize the equalizing charge of battery.On the one hand, the voltage acquisition result of electric core is determined to treat balanced electric core group, and corresponding enforcement is balanced, thereby can be only provides suitable balanced energy, accomplish non-dissipative equalizing, thereby the charging energy consumption is little the electric core of needs equilibrium by controller; On the other hand, connect by charging gating circuit gating and to treat balanced electric core group, and accessory power supply can adjust self output voltage under acquisition control circuit control, to adapt to the voltage requirements of boost charge, can realize simultaneously the balancing speed of battery charge has been accelerated in a plurality of electric core boost charges.
Description of drawings
Fig. 1 is the accessory power supply boost charge structural representation of the utility model embodiment;
Fig. 2 is that the output voltage of the accessory power supply of the utility model embodiment is adjusted control chart;
Fig. 3 is the balanced charging device structural representation of the utility model embodiment;
Fig. 4 is the acquisition control circuit and the accessory power supply charging circuit isolating construction schematic diagram of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
The utility model is mainly used in battery is carried out equalizing charge, is recharged battery, for example can be power lithium-ion battery, and it can contain one or more power brick, in each power brick, is in series with a plurality of electric cores (cell).
Referring to Fig. 1 and Fig. 3, Fig. 3 shows the general structure of the balanced charging device of the utility model example, wherein, the both positive and negative polarity of main power source 4 respectively correspondence be connected and be in series with a plurality of power brick 1 (power brick 1, power brick 2 ..., power brick n) the both positive and negative polarity of battery, battery is carried out the integral body charging.
For realizing equalizing charge, 2 pairs of power brick of accessory power supply 1 are set in device carry out boost charge, each power brick 1 all connects an accessory power supply 2, and (Fig. 3 is for for the purpose of simple, only show an accessory power supply 2, those skilled in the art are after the connected mode of reference Fig. 1 and an accessory power supply described below and a power brick, can learn easily how the accessory power supply corresponding with it connects each power brick, no longer separately explanation).The implementation process of boost charge is undertaken by acquisition control circuit 5 controls, and acquisition control circuit 5 is connected with main power source 4, accessory power supply 2, power brick 3 by control bus 6, and main power source 4, accessory power supply 2, power brick 3 are implemented control.Acquisition control circuit 5 can adopt Programmable Logic Controller or single-chip microcomputer, so that carry out the control procedure of whole equalizing charge.
As shown in Figure 1, accessory power supply 2 is connected to each electric core in the power brick by charging gating circuit 3 gated natures, in Fig. 1, exemplary description N electric core BT1, BT2, BT3 ... BTn.Accordingly, be provided with 2N bar charging gating circuit 3.Comprise gate-controlled switch 31 in the charging gating circuit 3,, perhaps disconnect this charging gating circuit so that controllably connect this charging gating circuit.The gate-controlled switch of 2N bar charging gating circuit 3 is respectively K1, K2, K3, K4, K5, K6 ..., K2n-1, K2n.Gate-controlled switch can be triode, metal-oxide-semiconductor, relay etc.Per two charging gating circuits 3 are a pair of, be connected to the positive pole and the negative pole of an electric core, and corresponding positive pole and the negative pole that is connected accessory power supply 2, as Fig. 1, charging gating circuit with its place of gate-controlled switch designate, thereby each bar charging gating circuit is distinguished, and then charge gating circuit K1 and charging gating circuit K2 constitute a pair of, are connected to negative pole and the positive pole of electric core BT1; Charging gating circuit K1 and charging gating circuit K2 constitute a pair of, are connected to negative pole and the positive pole of electric core BT1; Charging gating circuit K3 and charging gating circuit K4 constitute a pair of, are connected to negative pole and the positive pole of electric core BT2; Charging gating circuit K5 and charging gating circuit K6 constitute a pair of, are connected to negative pole and the positive pole of electric core BT3; Charging gating circuit K2n-1 and charging gating circuit K2n constitute a pair of, are connected to negative pole and the positive pole of electric core BTn; All charging gating circuits that link to each other with electric core positive pole are connected to the positive pole of accessory power supply, and all charging gating circuits that link to each other with electric core negative pole are connected to the negative pole of accessory power supply.For improving fail safe, (for example charging gating circuit 3 with anodal each that links to each other of electric core, K2 shown in Fig. 1, K4, K6, K2n) in also be in series with fuse 32 and/or diode 33, also promptly can only comprise fuse 32 or only comprise diode 33 or comprise fuse 32 and the series connection group of diode 33, excessive to prevent reverse voltage and/or electric current.
The equalizing charge process is carried out under acquisition control circuit 5 controls, hereinafter describes with a power brick.At first, gather the voltage of each the electric core in these power brick, determine which electric core needs equilibrium in the power brick according to collection result by acquisition control circuit 5.
After determining to need balanced electric core, treat balanced electric core and divide into groups, each treats that balanced electric core group can comprise an electric core, routine BT1 as shown in Figure 1, also can comprise the electric core of two or more adjacency, two electric core BT2 of routine adjacency as shown in Figure 1 and BT3.
As shown in Figure 1, after having determined to treat balanced electric core group, 5 pairs of charging gating circuits 3 of acquisition control circuit are controlled, control charging gating circuit 5 is connected accessory power supply 2 and is treated balanced electric core group, set up accessory power supply 2 and the charge circuit for the treatment of balanced electric core group, make accessory power supply 2 can treat balanced electric core group and charge.Suppose that electric core BT2, BT3 among Fig. 1 need equilibrium, then under acquisition control circuit 5 controls, gate-controlled switch K3, K6 on charging gating circuit K3 and its circuit of each self-closing of K6, thus the charge circuit that accessory power supply 2 is treated balanced electric core group (series connection of electric core BT2 and BT3) formed; Simultaneously, the output voltage values of 5 pairs of accessory power supplys 2 of acquisition control circuit is adjusted, and supposes that each electric core needs the 4.2V voltage charging, owing to treat that balanced electric core group comprises two electric core BT2, BT3, so the output voltage values of accessory power supply 2 should be 2*4.2V, i.e. 8.4V.When a power brick contains a plurality of when treating balanced electric core group, can treat the electric core quantity in the balanced electric core group is carried out from how to sort to few according to a plurality of, the balanced electric core group for the treatment of that the electric core quantity that promptly contains is maximum has limit priority, at first this is treated that balanced electric core group charges, successively other are treated that balanced electric core group charges by electric core quantity from how to few order again.Because when treating balanced electric core group boost charge to one, each electric core voltage in the power brick is also changing, thereby might be after one being treated the boost charge of balanced electric core group is finished, treat that balanced electric core changes, need redefine and treat that balanced electric core group and maximum treat balanced electric core group (the electric core quantity that promptly contains maximum treat balanced electric core group), then this maximum is treated that balanced electric core group carries out boost charge, to improve battery balanced speed.
As shown in Figure 2, there is shown the voltage control ring structure of accessory power supply 2, treat the charging voltage demand of balanced electric core group by acquisition control circuit 5 bases, DA (digital-to-analogue conversion) conversion by its MCU (microcontroller) is exported analog signal to provide reference voltage, the accessory power supply output voltage that reference voltage returns with feedback 25 at comparator 21 places relatively, determine the voltage-regulation value, regulate accordingly by adjuster 22, PWM (pulse-width modulation) power amplifier 23 carries out power amplification, the adjusted voltage of main circuit 24 outputs, thereby make the accessory power supply output voltage adjustable, to adapt to the purpose of simultaneously balanced more piece electricity core in the rated range internal linear.
The equalizing charge of the utility model embodiment is a kind of non-dissipative equalizing, gathers electric core voltage by acquisition control circuit, determine to treat balanced electric core group, correspondingly carry out equilibrium and replenish, do not need to expend unnecessary energy, thereby the energy consumption of whole process is little by accessory power supply.Accessory power supply can carry out boost charge to more piece electricity core simultaneously, has improved battery balanced speed.
Equilibrium of the present utility model belongs to non-dissipative equalizing completely, and equalizing circuit itself can the loss energy content of battery.And balancing speed is fast.Simultaneously, accessory power supply can be implemented equalizing charge to a plurality of electric cores simultaneously, makes that whole balancing procedure speed is fast, weak point consuming time.The comparison of its whole equalizing charge effect and prior art can be referring to following table 1.
Table 1
| Item compared | The bypass resistance method | The energy transfer method | The utility model |
| Volume | In | Greatly | Greatly |
| Equalizing circuit efficient | Total loss | 10%-95% is according to transduction pathway | 100％ |
| Euqalizing current | 200mA | 5A | Can be greater than 10A |
| Caloric value | Greatly | According to uneven situation | Do not have |
| Cost | Low | High | In |
| Circuit complexity | Simpler | Complicated | Simpler |
In the time of can setting acquisition control circuit and gather the magnitude of voltage of each electric core, power supply stops charging.So, can improve the magnitude of voltage of acquisition control circuit and gather accuracy, the assurance equilibrium can be carried out more accurately.On the other hand, in whole balanced charging device, Acquisition Circuit (promptly being used for the magnitude of voltage collection of each electric core of acquisition control circuit) is separated with the charging circuit of accessory power supply.As shown in Figure 4, the collection circuit of acquisition control circuit shown in broken lines is called the collection line among the figure, comprise L1, L2, L4 ..., L2n.In the example of Fig. 4, the voltage of electric core BT1 is gathered by gathering line L1, L2, and the voltage of electric core BT2 is gathered by gathering line L2, L4, and the voltage of electric core BT3 is gathered by gathering line L4, L6, and the voltage of electric core BTn is gathered by gathering line L2 (n-1), L2n.Power brick shown in Fig. 4, be BT1, BT2, BT3 ... the series connection group of the n of BTn electric core, so for power brick, its positive pole is to be positioned at the positive pole that the BTn of an end is organized in series connection, its negative pole is the negative pole that is positioned at the BT1 of the series connection group other end, can see, gather line and comprise the n+1 bar, promptly gathering line quantity is that electric core quantity adds one, gather the negative pole that line L1 is connected electric core BT1, it also is the power brick negative pole, gather line L2, L4, L6, L2n is connected to electric core BT2, BT3, the positive pole of BTn, that is to say that the connection setting that the n+1 bar is gathered line is utmost point that is connected power brick wherein, the n bar then is connected to another utmost point of each electric core in the power brick in addition.Gather the both positive and negative polarity that line directly is connected electric core, and without the gate-controlled switch of accessory power supply charging circuit, promptly acquisition control circuit separates with the charging circuit of accessory power supply, the influence that not whether connected by the charging circuit of accessory power supply.
Can stop magnitude of voltage in balanced starting resistor value and equilibrium hysteresis voltage is set between the two.If: single electric core voltage difference=average voltage-single electric core voltage, promptly in a power brick, the voltage difference of a certain electric core equals the average voltage of all electric cores in the power brick and the voltage difference of this electricity core.Whether a certain electric core needs equilibrium, its condition be the voltage difference of this electricity core whether in prescribed limit, in this way, then need not equilibrium, otherwise this electricity core is needs balanced electric core.All equilibriums all are relative, and the voltage of each electric core can not be accomplished absolute unanimity, and therefore in the equalizing charge of reality, the so-called unanimity of each electric core voltage is meant that its single electric core voltage difference is in prescribed limit.For example suppose that single electric core voltage difference＜aV is considered to balance, then balanced entry condition is single electric core voltage difference＞=aV, but in example of the present utility model, balanced termination condition is not to be single electric core voltage difference＜aV, but be set to the V of single electric core voltage difference＜(a-b),, also be that balanced starting resistor value and equilibrium stop to be provided with between the magnitude of voltage hysteresis voltage b (b＜a).
For example, a is 0.1v, and b is 0.05v, then when return difference is not set, and in single electric core voltage difference during greater than 0.1v, the balanced startup, in single electric core voltage difference during less than 0.1v, the balanced end.After return difference is provided with, balanced start constantly, but single electric core voltage difference is during less than 0.05v, balancedly just finishes, and so, can (promptly not avoid voltage to fluctuate and cause repeatedly equilibrium at 0.1V, stop equilibrium so that equilibrium can frequently not beated at a point ...).
The calculating of single electric core voltage difference also can be adopted following formula: single electric core voltage difference=the highest electric core voltage-single electric core voltage, promptly in a power brick, the voltage difference of a certain electric core equals the voltage peak in all electric cores and the voltage difference of this electricity core in the power brick.This balanced way can make final portfolio effect better, for example one comprise 10 the economize on electricity cores power brick in, one the economize on electricity core be 4.1V, other electric core all is 4.0V, adopt aforementioned mean value calculation method, then the voltage difference of other 9 economize on electricity core is 0.01V, and equilibrium can't start.And if press the peak computing method, voltage difference of other 9 economize on electricity core is 0.1V, the balanced startup, thereby can continue other electric cores are carried out equilibrium.
Balanced operation is not subjected to main power source that the influence of no-output is arranged, and main power source stops when any economize on electricity core voltage reaches capping.Under the perfect condition, the voltage of each electric core should be consistent, arrive its capping, but factor affecting such as examined, charging, equilibrium generally only is a relative equilibrium, the capping of supposing electric core voltage is cV, then the voltage of each the electric core after the equilibrium is in [c-a, c] this voltage range, can see, a is more little, and then the accuracy of equalization is high more.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, but this example of just lifting for ease of understanding should not think that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can make various possible being equal to and change or replacement, these changes or replacement all should belong to protection range of the present utility model.
Claims (9)
1. device for equalizing charge of battery, be used to the battery charge that contains at least one power brick, described power brick is in series with a plurality of electric cores, it is characterized in that, described device comprises the main power source that described battery is carried out whole charging, described power brick is carried out the accessory power supply of boost charge, described accessory power supply gated nature is connected to the charging gating circuit of each the electric core in the described power brick, and acquisition control circuit, described acquisition control circuit and described battery, main power source, accessory power supply, the charging gating circuit connects, gather the magnitude of voltage of each the electric core in the described power brick and determine to treat balanced electric core group according to collection result, describedly treat that balanced electric core group comprises an electric core in the power brick, perhaps comprise the electric core of two or more adjacency in the power brick, and control described charging gating circuit with described accessory power supply and describedly treat that balanced electric core winding is logical, and control accessory power supply output voltage values is adjusted into and treats the required charging voltage of balanced electric core group, to treat that to described balanced electric core group charges.
2. device as claimed in claim 1 is characterized in that described battery contains a plurality of power brick, and each power brick connects a described accessory power supply.
3. device as claimed in claim 2 is characterized in that described acquisition control circuit comprises Programmable Logic Controller or single-chip microcomputer.
4. device as claimed in claim 2 is characterized in that, described charging gating circuit comprises gate-controlled switch, and described gate-controlled switch is triode, metal-oxide-semiconductor or relay.
5. device as claimed in claim 4 is characterized in that, described charging gating circuit also comprises and fuse, diode or the fuse of described gate-controlled switch serial connection and the group of connecting of diode.
6. as the arbitrary described device of claim 1-5, it is characterized in that described battery is a power lithium-ion battery.
7. as the arbitrary described device of claim 1-5, it is characterized in that, the collection number of, lines of described acquisition control circuit is that the electric core quantity in the described battery adds 1, wherein, article one, gather the utmost point that circuit is connected described battery, other gather another utmost point that circuit is connected to each the electric core in the described battery.
8. as the arbitrary described device of claim 1-5, it is characterized in that, in each power brick, the quantity of described charging gating circuit is 2 times of the interior electric core quantity of power brick, per two charging gating circuits are a pair of, a charging gating circuit in a pair of charging gating circuit connects a utmost point of an electric core, and another charging gating circuit connects another utmost point of this electricity core.
9. as the arbitrary described device of claim 1-5, it is characterized in that, be connected to the described of accessory power supply by charging gating circuit gating and treat that balanced electric core group is that maximum is treated balanced electric core group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009202045887U CN201490741U (en) | 2009-09-03 | 2009-09-03 | Battery balanced charging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202045887U CN201490741U (en) | 2009-09-03 | 2009-09-03 | Battery balanced charging device |
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| CN201490741U true CN201490741U (en) | 2010-05-26 |
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| CN2009202045887U Expired - Fee Related CN201490741U (en) | 2009-09-03 | 2009-09-03 | Battery balanced charging device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917034A (en) * | 2010-07-27 | 2010-12-15 | 合肥西玛科电子有限公司 | Relay switching-based lithium battery pack non-dissipative equalizing device |
| CN102780253A (en) * | 2012-08-22 | 2012-11-14 | 西南大学 | Series-parallel connection conversion equalizing charge device |
| CN103168406A (en) * | 2010-10-20 | 2013-06-19 | 索尼公司 | Battery pack, method for charging/discharging same, and power consumption device |
| CN103825333A (en) * | 2014-03-06 | 2014-05-28 | 王晓秋 | Online undervoltage auxiliary charge control circuit and control method for storage batteries |
| CN106740211A (en) * | 2016-12-28 | 2017-05-31 | 中聚（杭州）新能源科技有限公司 | The balancing energy system and method for electrokinetic cell |
| US9774197B1 (en) | 2017-02-22 | 2017-09-26 | Bordrin Motor Corporation, Inc. | Battery internal short-circuit detection method based on cell charge balancing |
| CN108565906A (en) * | 2018-02-01 | 2018-09-21 | 合肥联信电源有限公司 | A kind of emergency power supply unit with BAS communications |
| CN109274154A (en) * | 2018-11-14 | 2019-01-25 | 北京普莱德新能源电池科技有限公司 | A kind of battery standard case benefit electric equipment |
-
2009
- 2009-09-03 CN CN2009202045887U patent/CN201490741U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917034A (en) * | 2010-07-27 | 2010-12-15 | 合肥西玛科电子有限公司 | Relay switching-based lithium battery pack non-dissipative equalizing device |
| CN103168406A (en) * | 2010-10-20 | 2013-06-19 | 索尼公司 | Battery pack, method for charging/discharging same, and power consumption device |
| CN103168406B (en) * | 2010-10-20 | 2015-09-02 | 索尼公司 | Battery pack, for the method for batteries charging/electric discharge and power consumption devices |
| CN102780253A (en) * | 2012-08-22 | 2012-11-14 | 西南大学 | Series-parallel connection conversion equalizing charge device |
| CN103825333A (en) * | 2014-03-06 | 2014-05-28 | 王晓秋 | Online undervoltage auxiliary charge control circuit and control method for storage batteries |
| CN106740211A (en) * | 2016-12-28 | 2017-05-31 | 中聚（杭州）新能源科技有限公司 | The balancing energy system and method for electrokinetic cell |
| US9774197B1 (en) | 2017-02-22 | 2017-09-26 | Bordrin Motor Corporation, Inc. | Battery internal short-circuit detection method based on cell charge balancing |
| CN108565906A (en) * | 2018-02-01 | 2018-09-21 | 合肥联信电源有限公司 | A kind of emergency power supply unit with BAS communications |
| CN109274154A (en) * | 2018-11-14 | 2019-01-25 | 北京普莱德新能源电池科技有限公司 | A kind of battery standard case benefit electric equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20180903 |