CN104092266A - Method and device for charging and discharging power batteries fast and safely - Google Patents
Method and device for charging and discharging power batteries fast and safely Download PDFInfo
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- CN104092266A CN104092266A CN201410361621.2A CN201410361621A CN104092266A CN 104092266 A CN104092266 A CN 104092266A CN 201410361621 A CN201410361621 A CN 201410361621A CN 104092266 A CN104092266 A CN 104092266A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
Provided are a method and device for charging and discharging power batteries fast and safely. The device comprises a linkage switch, N high-power battery packs, M positive electrode input control switches, P negative electrode input control switches and Q battery pack tandem switches, wherein each battery pack tandem switch is connected between every two adjacent high-power battery packs in series, and N, M, P and Q are respectively a positive integer greater than or equal to 1. When the linkage switch faces one direction, the positive electrode input control switches and the negative electrode input control switches are switched on, the battery pack tandem switches are switched off, and the high-power battery packs are connected in parallel; when the linkage switch faces the other direction, the positive electrode input control switches and the negative electrode input control switches are switched off, the battery pack tandem switches are switched on, and the high-power battery packs are connected in series. The method and device have the advantages of being capable of achieving parallel charging and series discharging and applicable to power cars.
Description
Technical field
The present invention relates to a kind of method and device that electrokinetic cell fast and safely discharges and recharges that solve.
Background technology
The electrokinetic cell of using on existing power vehicle, because the battery pack in automobile is connected, so must charge with the straight charging of 240V-370V in the time of charging, there are a lot of problems in the mode of this high voltage direct current charging, the one, high voltage direct current charging quite dangerous, therefore, need professional to charge, the 2nd, high-voltage charging is can not electric current excessive, so the charging interval is longer, the 3rd, high-voltage charging need to be set up a large amount of high voltage direct current charging station or charging pile, be unfavorable for that family and individual install and use, and this high voltage direct current charging station or charging pile construction cost very high, limit the popularization of power vehicle.The 4th, existing automobile batteries is not easy to maintenance, and single battery damages whole Battery pack and scraps, and cost is higher.
Summary of the invention
In order to overcome the problems referred to above, the invention provides one can charged in parallel, method and device that the solution electrokinetic cell using on the applicable power vehicle of discharged in series fast and safely discharges and recharges.
Technical scheme of the present invention is: a kind of method that electrokinetic cell fast and safely discharges and recharges that solves is provided, design a linked switch, described linked switch comprise M respectively with high power battery group BA1, BA2, BA3 ... the anodal input control switch A1 that the positive pole of BAN connects, A2, A3, A4 ... AN, P respectively with high power battery group BA1, BA2, BA3 ... the negative pole input control switch B1 that the negative pole of BAN connects, B2, B3 ... BN, Q is connected on adjacent two high power battery group BA1, BA2, BA3 ... battery pack tandem tap C1 between BAN, C2 ... CN-1, wherein N, M, P and Q are more than or equal to 1 positive integer, when described linked switch is during towards a direction, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN closure, described battery pack tandem tap C1, C2 ... CN-1 disconnects, described high power battery group BA1, BA2, BA3 ... BAN is in state in parallel, for giving described high power battery group BA1, BA2, BA3 ... BAN charging, when described linked switch is to another way time, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN disconnects, described battery pack tandem tap C1, C2 ... CN-1 closure, described high power battery group BA1, BA2, BA3 ... BAN is in series connection, described high power battery group BA1, BA2, BA3 ... BAN can externally discharge.
The present invention also provides fast and safely charge and discharge device of a kind of electrokinetic cell, comprise linked switch, N high power battery group BA1, BA2, BA3 ... BAN, M respectively with described high power battery group BA1, BA2, BA3 ... the anodal input control switch A1 that the positive pole of BAN connects, A2, A3, A4 ... AN, P respectively with described high power battery group BA1, BA2, BA3 ... the negative pole input control switch B1 that the negative pole of BAN connects, B2, B3 ... BN, Q is connected on adjacent two described high power battery group BA1, BA2, BA3 ... battery pack tandem tap C1 between BAN, C2 ... CN-1, wherein N, M, P and Q are more than or equal to 1 positive integer, described linked switch is configured to when described linked switch is during towards a direction, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN closure, described battery pack tandem tap C1, C2 ... CN-1 disconnects, described high power battery group BA1, BA2, BA3 ... BAN is in state in parallel, when described linked switch is to another way time, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN disconnects, described battery pack tandem tap C1, C2 ... CN-1 closure, described high power battery group BA1, BA2, BA3 ... BAN is in series connection.
As improvement of the present invention, described high power battery group, comprise multiple battery units that are in series by single battery or multiple single battery, control the battery management unit inputing or outputing of described battery unit, each described battery management unit at least comprise be subject to battery management unit MCU control, other battery unit in permission high power battery group is to self mending electric voltage dynamic equilibrium administration module, and described in each, the output of battery unit is connected in parallel.
As improvement of the present invention, each described battery management unit also comprises the voltage detection module that controlled by the MCU of battery management unit, described voltage detection module cyclically detects the voltage of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, if wherein the magnitude of voltage of a batteries is less than the magnitude of voltage of other battery in self battery unit, and during lower than the output voltage preset value of battery, the MCU of described battery management unit cuts off the output of self battery unit.
As improvement of the present invention, each described battery management unit also comprises the current detection module that controlled by the MCU of battery management unit, described current detection module cyclically detects the output current of the every Battery pack in self battery unit successively, and flow to the MCU of the battery management unit of self, if when wherein the current value of a Battery pack is greater than the output current preset value of battery, the output of the MCU cut-out of described battery management unit self battery unit.
As improvement of the present invention, each described battery management unit also comprises the temperature detecting module that controlled by the MCU of battery management unit, described temperature detecting module cyclically detects the temperature of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, if when wherein the temperature of a batteries is greater than the temperature preset value of battery, the output of the MCU cut-out of described battery management unit self battery unit.
As improvement of the present invention, the MCU of described battery management unit is at least by following works:
51, Information Monitoring step, the MCU of described battery management unit gathers temperature, the voltage and current information of the battery unit being managed;
52, battery temperature determining step, whether the temperature of the battery unit that judgement is managed is normal; If so, enter 53 steps; If not, enter 54 steps;
53, according to pre-defined rule set handling flag bit; According to circumstances enter 55 or 56 steps;
54, stop the charge or discharge work of the battery unit being managed;
55, do you judge that whether dynamic equilibrium charging mark abnormal? if enter 57 steps, enter if not 58 steps;
56, do you judge that whether dynamic equilibrium electric discharge mark abnormal? if enter 59 steps, enter if not 60 steps;
57, turn off charge switch forbids that charging enters pulse current charge pattern;
58, open charge switch and allow charging;
59, disconnect discharge switch and forbid that electric discharge enters pulsed discharge pattern;
60, open discharge switch and allow electric discharge;
61,, every the scheduled time, repeat the 51st to 60 steps.
As improvement of the present invention, also comprise main MCU, described main MCU controls charging circuit to all battery unit chargings or controls all battery units and externally export.
As improvement of the present invention, also comprise communications connector, the voltage of each described battery unit, electric current and temperature are transferred to main MCU by described communications connector, and described main MCU is according to output or the input of the each described battery unit of pre-defined rule control.
As improvement of the present invention, described main MCU is by stating works:
81, send and obtain data life to battery management unit successively;
82, judge that whether data receiver is successful, if not, return to the 81st step, if so, enter the 83rd step;
83, resolution data, and storage voltage, electric current and temperature data;
84, voltage and current data and default judgment rule are compared, judge whether all battery units need charging; If so, enter 85 steps, if otherwise enter 86 steps;
85, enter charging subprogram;
86, enter electric discharge subprogram;
87, the 81st to 86 steps are carried out in timing recuperation.
As improvement of the present invention, described charging subprogram comprises following steps:
851, obtain related data from the 84th step;
852, judged whether charging abnormality mark position, if any extremely entering 853 steps, if without extremely, enter 858 steps;
853, whether detection the first battery unit charging is abnormal, if so, enters 854 steps, if not, enters 855 steps;
854, the internal switch that turn-offs the first battery management unit, quits work the first battery unit;
855, detect successively second ... N battery unit, normal if leading appears in the charging of a certain battery unit, turn-off the internal switch of respective battery administrative unit, make corresponding battery unit quit work 856; If extremely, do not enter 857 steps;
857, return to the 852nd step;
858, allow charging;
Whether the total voltage that 859, detects each battery unit reaches predetermined value, if so, enters 8592 steps; If not, enter 8591 steps;
8591, furnishing low current charge;
8592, furnishing large current charge;
8593, charging finishes, and returns to the 851st step.
As improvement of the present invention, described electric discharge subprogram comprises following steps:
861, obtain related data from the 84th step;
862, judged whether electric discharge abnormality mark position, if any extremely entering 864 steps, if without extremely, enter 863 steps;
863, electric discharge always, returns to the 861st step;
864, enter the detection of following each battery unit according to rule;
865, whether detection the first battery unit electric discharge is abnormal, if so, enters 866 steps, if not, enters 867 steps;
866, the internal switch that turn-offs the first battery management unit, quits work the first battery unit;
867, detect successively second ... N battery unit, normal if leading appears in the electric discharge of a certain battery unit, turn-off the internal switch of respective battery administrative unit, make corresponding battery unit quit work 868; If extremely, do not enter 869 steps;
869, return to the 862nd step.
The present invention is owing to having adopted linked switch, linked switch in the present invention is contained on power vehicle (being not limited to power vehicle), in the time of electric discharge, make battery pack series connection, in the time of charging, make cell parallel, so just can realize in the time of parallel connection, adopt low pressure (being less than the direct current of 60 volts) to charge, reach and be perfectly safe and can adopt large current charge, shorten the object in charging interval, priorly existing high-voltage charging station or charging pile can be replaced with to low pressure charging station or low pressure charging pile, this is by the revolution that is power battery charging mode, not only can improve widely the fail safe of charging, and can greatly reduce charging station or charging pile construction cost, low pressure charging station or charging pile cost only have one of high-voltage charging station or charging pile three parts of cost, this is conducive to promote in the whole nation low pressure charging station or charging pile technology on a large scale, in addition, the battery unit in the present invention output terminal direct paralleled, can overcome the restriction that is subject to voltage conversion unit self power output in prior art, has improved the power output of battery, and has reduced the fault point, adopt voltage dynamic equilibrium administration module can realize the mutual charging between each battery unit, basically identical to ensure the output voltage of whole high power battery group, the power output of each battery unit is not affected, adopt the battery management unit of self to monitor the voltage and current of each batteries in each battery unit, compare with total current with the total voltage of only monitoring each battery unit in prior art, it can overcome, and battery unit is good exists a certain batteries to damage, and the total voltage of its battery unit and total current be while also meeting the requirements, the potential safety hazard existing due to the damage of single battery wherein.
Brief description of the drawings
Fig. 1 is the planar structure schematic diagram of an embodiment of the present invention.
Fig. 2 be in Fig. 1 high power battery frame structure schematic diagram.
Fig. 3 is the frame structure schematic diagram of battery management unit in Fig. 2.
Fig. 4 is the workflow schematic diagram of battery management unit.
Fig. 5 is main MCU workflow schematic diagram.
Fig. 6 is the subprogram workflow schematic diagram that charges in Fig. 5.
Fig. 7 is the subprogram workflow schematic diagram that discharges in Fig. 5.
Embodiment
The invention provides a kind of method (referring to Fig. 1) that electrokinetic cell fast and safely discharges and recharges that solves, design a linked switch 100, described linked switch 100 comprise M respectively with high power battery group BA1, BA2, BA3 ... the anodal input control switch A1 that the positive pole of BAN connects, A2, A3, A4 ... AN, P respectively with high power battery group BA1, BA2, BA3 ... the negative pole input control switch B1 that the negative pole of BAN connects, B2, B3 ... BN, Q is connected on adjacent two high power battery group BA1, BA2, BA3 ... battery pack tandem tap C1 between BAN, C2 ... CN-1, wherein N, M, P and Q are more than or equal to 1 positive integer, when described linked switch 100 is during towards a direction, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN closure, described battery pack tandem tap C1, C2 ... CN-1 disconnects, described high power battery group BA1, BA2, BA3 ... BAN is in state in parallel, for giving described high power battery group BA1, BA2, BA3 ... BAN charging, when described linked switch 100 is to another way time, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN disconnects, described battery pack tandem tap C1, C2 ... CN-1 closure, described high power battery group BA1, BA2, BA3 ... BAN is in series connection, described high power battery group BA1, BA2, BA3 ... BAN can externally discharge.
Refer to Fig. 1, what Fig. 1 disclosed is fast and safely charge and discharge device of a kind of electrokinetic cell, comprise linked switch 100, N high power battery group BA1, BA2, BA3 ... BAN, M respectively with described high power battery group BA1, BA2, BA3 ... the anodal input control switch A1 that the positive pole of BAN connects, A2, A3, A4 ... AN, P respectively with described high power battery group BA1, BA2, BA3 ... the negative pole input control switch B1 that the negative pole of BAN connects, B2, B3 ... BN, Q is connected on adjacent two described high power battery group BA1, BA2, BA3 ... battery pack tandem tap C1 between BAN, C2 ... CN-1, wherein N, M, P and Q are more than or equal to 1 positive integer, described linked switch 100 is configured to when described linked switch 100 is during towards a direction, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN closure, described battery pack tandem tap C1, C2 ... CN-1 disconnects, described high power battery group BA1, BA2, BA3 ... BAN is in state in parallel, when described linked switch 100 is to another way time, described anodal input control switch A1, A2, A3, A4 ... AN and described negative pole input control switch B1, B2, B3 ... BN disconnects, described battery pack tandem tap C1, C2 ... CN-1 closure, described high power battery group BA1, BA2, BA3 ... BAN is in series connection.
The present invention also provides fast and safely supporting low-voltage direct charging station or the charging pile of charge and discharge device of a kind of and described electrokinetic cell.Described low-voltage direct charging station or charging pile comprise rectifier filter, transformer, secondary commutation filter, sample circuit, PWM controller and switching device, 220V hands over charging to become direct current through rectifier filter, become needed low-voltage DC through transformer, low-voltage DC is exported constant dc after secondary filtering, sample circuit gathers output end voltage electric current, flow to control module, after the voltage and current signal that control module is brought sample circuit and parameter preset compare, according to the output voltage of comparative result control PWM controller and switching device adjustment transformer, make it to remain on constant power output, if the predeterminated voltage in the present embodiment is 42V-60V.
Ask for an interview Fig. 2 and Fig. 3, what Fig. 2 and Fig. 3 disclosed is the high power battery group in the present invention, comprise the outer battery unit 1 of multiple N, 2 ... N, control described battery unit 1, 2 ... N input or output with battery unit 1, 2 ... the battery management unit 101 that N quantity is equal, 1022 ... 10M, each described battery management unit 101, 1022 ... 10M comprises and controlled by the MCU 205 of battery management unit, other battery unit in permission high power battery group is to self mending electric voltage dynamic equilibrium administration module 201, battery unit 1 described in each, 2 ... the output of N is connected in parallel.In the present embodiment, the effect of described voltage dynamic equilibrium administration module 201 can be exemplified below, the MCU 205 that supposes battery management unit detects that the magnitude of voltage of the first battery unit 1 is less than other battery unit 22 ... the voltage of some battery units or certain this battery unit in N, and voltage difference has been greater than default voltage difference and has differed more than 30% as the output voltage between battery unit, allow other battery unit satisfying condition to self being the first battery unit 1 benefit electricity, realize dynamic equilibrium, the benefit electricity of other battery unit similarly, voltage dynamic equilibrium administration module by battery management unit separately completes, basically identical to ensure the output voltage of whole high power battery group, but the power output of each battery unit is not affected.Battery unit 1,2 in the present embodiment ... N can be in series by single battery or multiple single battery.The present invention is owing to having adopted the output terminal direct paralleled of battery unit, can overcome the restriction that is subject to voltage conversion unit self power output in prior art, the problem that whole high power battery group power is also restricted, has improved the power output of battery, and has reduced the fault point.BAT+ in Fig. 2 and BAT-are exactly each high power battery group BA1, BA2, the BA3 in Fig. 1 ... the positive and negative electrode of BAN.
Refer to Fig. 3, each described battery management unit 101, 1022 ... 10M also comprises the voltage detection module 202 that controlled by the MCU 205 of battery management unit, described voltage detection module 202 cyclically detects the voltage of the every batteries in self battery unit successively, taking the first battery unit 1 as example, the detection battery 11 that the first voltage detection module need circulate successively, 12 ... the voltage of 1N, and flow to the MCU 205 of the battery management unit of self, if wherein the magnitude of voltage of a batteries is less than the magnitude of voltage of other battery in self battery unit, and during lower than the output voltage preset value of battery, prove that this batteries damages, can not use again, if continue to use and just have potential safety hazard, the MCU 205 of described battery management unit is by internal switch K1 separately, K2 ... the output of Kn cut-out self battery unit, to guarantee the safety of battery pack, certainly, each described battery management unit 101, 1022 ... 10M can also comprise the current detection module 203 that controlled by the MCU 205 of battery management unit, described current detection module 203 cyclically detects the electric current of the every batteries in self battery unit successively, and flow to the MCU 205 of the battery management unit of self, if wherein the current value of a batteries is less than the current value of other battery in self battery unit, and during lower than the output current preset value of battery, the MCU205 of described battery management unit is by internal switch K1 separately, K2 ... the output of Kn cut-out self battery unit.Its operation principle is identical with voltage detection module 202 operation principles, repeats no more here.
Preferably, each described battery management unit 101,1022 ... 10M also can comprise the temperature detecting module 204 that controlled by the MCU 205 of battery management unit, described temperature detecting module 204 cyclically detects the temperature of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, if when wherein the temperature of a batteries is greater than the temperature preset value of battery, the MCU 205 of described battery management unit is by internal switch K1, K2 separately ... the output of Kn cut-out self battery unit.
Preferably, the present invention can also comprise main MCU 21, described main MCU 21 controls charging circuit to all battery unit chargings or controls all battery units and externally export, and realizes externally output or the charging input to each battery unit, and its specific works process is shown in following.
Preferably, the present invention also comprises communications connector 22, what in the present embodiment, adopt is that model is the communications connector of RS485, the voltage of each described battery unit, electric current and temperature are transferred to main MCU 21 by described communications connector 22, described main MCU 21 also can control output or the input of each described battery unit according to pre-defined rule, main MCU 21 can also be uploaded to background server by communication port by related communications.
Refer to Fig. 4, the MCU of described battery management unit at least can be by following works:
51, Information Monitoring step, the MCU of described battery management unit gathers temperature, the voltage and current information of the battery unit being managed;
52, battery temperature determining step, whether the temperature of the battery unit that judgement is managed is normal; If so, enter 53 steps; If not, enter 54 steps;
53, according to pre-defined rule set handling flag bit; According to circumstances enter 55 or 56 steps;
54, stop the charge or discharge work of the battery unit being managed;
55, do you judge that whether dynamic equilibrium charging mark abnormal? if enter 57 steps, enter if not 58 steps;
56, do you judge that whether dynamic equilibrium electric discharge mark abnormal? if enter 59 steps, enter if not 60 steps;
57, turn off charge switch forbids that charging enters pulse current charge pattern;
58, open charge switch and allow charging;
59, disconnect discharge switch and forbid that electric discharge enters pulsed discharge pattern;
60, open discharge switch and allow electric discharge;
61,, every the scheduled time, repeat the 51st to 60 steps.
Refer to Fig. 5, described main MCU is by stating works:
81, send and obtain data life to battery management unit successively;
82, judge that whether data receiver is successful, if not, return to the 81st step, if so, enter the 83rd step;
83, resolution data, and storage voltage, electric current and temperature data;
84, voltage and current data and default judgment rule are compared, judge whether all battery units need charging; If so, enter 85 steps, if otherwise enter 86 steps;
85, enter charging subprogram;
86, enter electric discharge subprogram;
87, the 81st to 86 steps are carried out in timing recuperation.
Refer to Fig. 6, described charging subprogram comprises following steps:
851, obtain related data from the 84th step;
852, judged whether charging abnormality mark position, if any extremely entering 853 steps, if without extremely, enter 858 steps;
853, whether detection the first battery unit charging is abnormal, if so, enters 854 steps, if not, enters 855 steps;
854, the internal switch that turn-offs the first battery management unit, quits work the first battery unit;
855, detect successively second ... N battery unit, normal if leading appears in the charging of a certain battery unit, turn-off the internal switch of respective battery administrative unit, make corresponding battery unit quit work 856; If extremely, do not enter 857 steps;
857, return to the 852nd step;
858, allow charging;
Whether the total voltage that 859, detects each battery unit reaches predetermined value, if so, enters 8592 steps; If not, enter 8591 steps;
8591, furnishing low current charge;
8592, furnishing large current charge;
8593, charging finishes, and returns to the 851st step.
Refer to Fig. 6, described electric discharge subprogram comprises following steps:
861, obtain related data from the 84th step;
862, judged whether electric discharge abnormality mark position, if any extremely entering 864 steps, if without extremely, enter 863 steps;
863, electric discharge always, returns to the 861st step;
864, enter the detection of following each battery unit according to rule;
865, whether detection the first battery unit electric discharge is abnormal, if so, enters 866 steps, if not, enters 867 steps;
866, the internal switch that turn-offs the first battery management unit, quits work the first battery unit;
867, detect successively second ... N battery unit, normal if leading appears in the electric discharge of a certain battery unit, turn-off the internal switch of respective battery administrative unit, make corresponding battery unit quit work 868; If extremely, do not enter 869 steps;
869, return to the 862nd step.
Claims (10)
1. one kind solves the method that electrokinetic cell fast and safely discharges and recharges, it is characterized in that: design a linked switch (100), described linked switch (100) comprise M respectively with high power battery group (BA1, BA2, BA3 ... BAN) the anodal input control switch (A1 that positive pole connects, A2, A3, A4 ... AN), P respectively with high power battery group (BA1, BA2, BA3 ... BAN) the negative pole input control switch (B1 that negative pole connects, B2, B3 ... BN), Q is connected on adjacent two high power battery group (BA1, BA2, BA3 ... BAN) the battery pack tandem tap (C1 between, C2, C3 ... CN-1), wherein N, M, P and Q are more than or equal to 1 positive integer, when described linked switch (100) is during towards a direction, described anodal input control switch (A1, A2, A3, A4 ... and described negative pole input control switch (B1, B2, B3 AN) ... BN) closure, described battery pack tandem tap (C1, C2, C3 ... CN-1) disconnect, described high power battery group (BA1, BA2, BA3 ... BAN) in state in parallel, for giving described high power battery group (BA1, BA2, BA3 ... BAN) charging, when described linked switch (100) is to another way time, described anodal input control switch (A1, A2, A3, A4 ... and described negative pole input control switch (B1, B2, B3 AN) ... BN) disconnect, described battery pack tandem tap (C1, C2, C3 ... CN-1) closure, described high power battery group (BA1, BA2, BA3 ... BAN) in series connection, described high power battery group (BA1, BA2, BA3 ... BAN) can externally discharge.
2. fast and safely charge and discharge device of an electrokinetic cell, it is characterized in that: comprise linked switch (100), N high power battery group (BA1, BA2, BA3 ... BAN), M respectively with described high power battery group (BA1, BA2, BA3 ... BAN) the anodal input control switch (A1 that positive pole connects, A2, A3, A4 ... AN), P respectively with described high power battery group (BA1, BA2, BA3 ... BAN) the negative pole input control switch (B1 that negative pole connects, B2, B3 ... BN), Q is connected on adjacent two described high power battery group (BA1, BA2, BA3 ... BAN) the battery pack tandem tap (C1 between, C2, C3 ... CN-1), wherein N, M, P and Q are more than or equal to 1 positive integer, described linked switch (100) is configured to when described linked switch (100) is during towards a direction, described anodal input control switch (A1, A2, A3, A4 ... and described negative pole input control switch (B1, B2, B3 AN) ... BN) closure, described battery pack tandem tap (C1, C2, C3 ... CN-1) disconnect described high power battery group (BA1, BA2, BA3 ... BAN) in state in parallel, when described linked switch (100) is to another way time, described anodal input control switch (A1, A2, A3, A4 ... and described negative pole input control switch (B1, B2, B3 AN) ... BN) disconnect, described battery pack tandem tap (C1, C2, C3 ... CN-1) closure, described high power battery group (BA1, BA2, BA3 ... BAN) in series connection.
3. fast and safely charge and discharge device of electrokinetic cell according to claim 2, it is characterized in that, described high power battery group, comprise multiple battery units that are in series by single battery or multiple single battery, control the battery management unit inputing or outputing of described battery unit, it is characterized in that: each described battery management unit at least comprise be subject to battery management unit MCU control, other battery unit in permission high power battery group is to self mending electric voltage dynamic equilibrium administration module, and described in each, the output of battery unit is connected in parallel.
4. fast and safely charge and discharge device of electrokinetic cell according to claim 3, it is characterized in that, each described battery management unit also comprises the voltage detection module that controlled by the MCU of battery management unit, described voltage detection module cyclically detects the voltage of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, if wherein the magnitude of voltage of a batteries is less than the magnitude of voltage of other battery in self battery unit, and during lower than the output voltage preset value of battery, the output of the MCU cut-out of described battery management unit self battery unit.
5. according to fast and safely charge and discharge device of the electrokinetic cell described in claim 2 or 3, it is characterized in that, each described battery management unit also comprises the current detection module that controlled by the MCU of battery management unit, described current detection module cyclically detects the electric current of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, the MCU of battery management unit judges the charge or discharge state of battery according to sense of current, the MCU of battery management unit is according to its present state, whether the value that judges charge or discharge has exceeded the regular scope of setting, if exceeded, enter pulse current charge pattern, make its output voltage reach dynamic equilibrium.
6. according to fast and safely charge and discharge device of the electrokinetic cell described in claim 2 or 3, it is characterized in that, each described battery management unit also comprises the temperature detecting module that controlled by the MCU of battery management unit, described temperature detecting module cyclically detects the temperature of the every batteries in self battery unit successively, and flow to the MCU of the battery management unit of self, if when wherein the temperature of a batteries is greater than the temperature preset value of battery, the output of the MCU cut-out of described battery management unit self battery unit.
7. according to fast and safely charge and discharge device of the electrokinetic cell described in claim 2 or 3, it is characterized in that, the MCU of described battery management unit is at least by following works:
(51), Information Monitoring step, the MCU of described battery management unit gathers temperature, the voltage and current information of the battery unit being managed;
(52), battery temperature determining step, whether the temperature of the battery unit that is managed of judgement normal; If so, enter (53) step; If not, enter (54) step;
(53), according to pre-defined rule set handling flag bit; According to circumstances enter (55) or (56) step;
(54), stop the charge or discharge work of the battery unit being managed;
(55), judge that whether dynamic equilibrium charging mark abnormal? if enter (57) step, enter if not (58) step;
(56), judge that whether dynamic equilibrium electric discharge mark abnormal? if enter (59) step, enter if not (60) step;
(57), turn off charge switch forbids that charging enters pulse current charge pattern;
(58), open charge switch and allow charging;
(59), disconnect discharge switch and forbid that electric discharge enters pulsed discharge pattern;
(60), open discharge switch and allow electric discharge;
(61), every the scheduled time, repeat (51) to (60) step.
8. high power battery group according to claim 2, is characterized in that, also comprises main MCU and communications connector, and described main MCU controls charging circuit to all battery unit chargings or controls all battery units and externally export; The voltage of each described battery unit, electric current and temperature are transferred to main MCU by described communications connector, and described main MCU is according to output or the input of the each described battery unit of pre-defined rule control.
9. high power battery group according to claim 8, is characterized in that, described main MCU is by stating works:
(81), send and obtain data life to battery management unit successively;
(82), judge whether success of data receiver, if not, return to (81) step, if so, enter (83) step;
(83), resolution data, and storage voltage, electric current and temperature data;
(84), voltage and current data and default judgment rule are compared, judge whether all battery units need charging; If so, enter (85) step, if otherwise enter (86) step;
(85), enter charging subprogram;
(86), enter electric discharge subprogram;
(87), timing recuperation carries out (81) to (86) step.
10. according to the high power battery group described in claim 2 or 3, it is characterized in that, with fast and safely supporting low-voltage direct charging station or the charging pile of charge and discharge device of described electrokinetic cell.
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