CN102934317A - Power supply device and charge circuit - Google Patents
Power supply device and charge circuit Download PDFInfo
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- CN102934317A CN102934317A CN2011800233256A CN201180023325A CN102934317A CN 102934317 A CN102934317 A CN 102934317A CN 2011800233256 A CN2011800233256 A CN 2011800233256A CN 201180023325 A CN201180023325 A CN 201180023325A CN 102934317 A CN102934317 A CN 102934317A
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- 238000007600 charging Methods 0.000 claims abstract description 139
- 210000005056 cell body Anatomy 0.000 claims description 224
- 210000004027 cell Anatomy 0.000 claims description 72
- 238000001514 detection method Methods 0.000 claims description 22
- 238000010586 diagram Methods 0.000 description 43
- 230000008929 regeneration Effects 0.000 description 37
- 238000011069 regeneration method Methods 0.000 description 37
- 230000009471 action Effects 0.000 description 28
- 230000008901 benefit Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 229910018095 Ni-MH Inorganic materials 0.000 description 7
- 229910018477 Ni—MH Inorganic materials 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 239000000470 constituent Substances 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000004087 circulation Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
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- 230000005622 photoelectricity Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/24—Alkaline accumulators
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
To prevent the overcharging of secondary batteries and to carry out optimal charging in response to the electrical characteristics of each secondary battery. A selecting-switch switching circuit (30) has thyristors (32) respectively connected to each secondary battery (10), and a control circuit (40) which controls the ON/OFF switching of the plurality of thyristors (32). By the control circuit (40) controlling the ON/OFF switching of the thyristors (32), a charge path is formed to an arbitrary secondary battery (10) and the charge path to the other secondary batteries is cleared. A constant current supply generation circuit (20) is provided with a chopper circuit configured from: an inductor (L) connected between a supply output terminal (OT) and a supply input terminal (IT); and a charge switch (22) which is connected in serial to the inductor (L) and of which the ON/OFF switching is controlled by the control circuit (40). The chopper circuit is connected to an external power supply (EP) and charges the secondary batteries (10).
Description
Technical field
The present invention relates to possess supply unit and the charging circuit of the charging circuit that the secondary cell that can discharge and recharge is charged.
Background technology
For example, at the electric automobile that travels with electro-motor, adopt in the mixed power electric car that engine and electro-motor travel simultaneously, as the unit cell battery, and the Battery pack that forms of a plurality of these unit cell batteries of will connecting is used as the power supply of electro-motor with nickel-hydrogen cell, lithium ion battery, this secondary cell of lead accumulator.In this Battery pack, after repeatedly discharging and recharging, the constituent parts element cell based on charged state (State of Charge:SOC; Be also referred to as residual capacity etc.) terminal voltage between produce deviation, if let alone this deviation no matter and charge, then a part of unit cell battery can become overcharge condition sometimes.In addition, when deteriorated the expediting the progress of unit cell battery and when deteriorated, even only be the unit cell deterioration of battery of a part, Battery pack integral body also can become and can not use.
For this problem, the method as the deviation of the charged state between a plurality of unit cell batteries of adjusting the formation Battery pack that charging finishes proposes the charged state adjusting device just like Battery pack such shown in the patent documentation 1.Such as shown in figure 26, this charged state adjusting device 90 is adjusted by being connected in series a plurality of unit cell battery that is made of secondary cell 91 that consist of and be connected with the charged state of the Battery pack that discharges and recharges under the closed circuit state of load or charger at two ends.In addition, this charged state adjusting device 90 possesses: average charge arranges with load, charger insulation ground with capacitor 92; And circulation linkage unit 93, under the open-circuit condition of Battery pack, constituent parts element cell 91 is connected with capacitor 92 circulations with average charge.Thus, even consist of the deviation that produces each other charged state of the unit cell battery 91 of Battery pack in a plurality of series connection, also can move to cell voltage lower unit cell battery 91 via average charge with capacitor 92 from the higher unit cell battery 91 of cell voltage by making electric charge, can reduce voltage difference thus.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2002-17048 communique
Summary of the invention
The problem that invention will solve
Yet, the charged state adjusting device 90 of Figure 26 only is that the deviation of the unit cell battery 91 of charging end is adjusted, formerly unit cell battery 91 have been carried out re-using the structure that charged state adjusting device 90 suppresses deviation after the charging, therefore the operation of charging and adjustment operation need to be carried out individually, spended time, and the circuit that needs respectively to carry out these chargings and adjustment, therefore also there is the complicated problem of circuit structure.
In addition, in this charged state adjusting device 90, Yi Bian adjust charged state Yi Bian only can switch successively circularly unit cell battery 91, therefore also exist finish to the charging of Battery pack integral body till spended time and the shortcoming of deterioration of efficiency.Particularly in recent years Battery pack uses the situation of a large amount of unit cell batteries 91 also to become many along with the requirement of high capacity, in this circulating switching charging, the secondary cell number of charging interval and use is in direct ratioly elongated, and the change action of unit cell battery 91 also becomes loaded down with trivial details, is unpractical.And switch element uses the photoelectricity MOS transistor in the circuit example of Figure 26, has also therefore that drive circuit is complicated and circuit cost uprises this problem.Particularly, when the charge path that the pattern of wants for constituent parts element cell 91 being averaged charging control can be independently charged to unit cell battery 91, if in the structure of sort circuit, use transistor, will produce the complicated this problem of circuit structure.
In addition, in this circuit, adopted elder generation to make again the savings electric charge move to the mode of the lower unit cell battery 91 of terminal voltage via average charge with capacitor 92 savings electric charges, therefore must constitute jumbo average charge capacitor 92, and this average charge becomes with the open terminal voltage that is full of electricity condition of constituent parts element cell 91 extremely approaching with capacitor 92 for the moment before the charging beginning, and the terminal voltage that can not surpass it, need in advance by chargings such as alternating current generators, must carry out preparing before such charging, also have further complicated this problem of structure.
The present invention is in view of this problem points in the past and carry out.Main purpose of the present invention is, provides more at a low price, can prevent overcharging of secondary cell and carry out supply unit and the charging circuit of optimal charge.
Be used for solving the means of problem and the effect of invention
To achieve these goals, the supply unit of the first scheme is characterized in that according to the present invention, possesses: a plurality of secondary cell bodies 10, mutually be connected in series, and possess respectively positive pole and negative pole; Constant current source generating circuit 20 possesses the supply lead-out terminal OT and the supply input terminal IT that supply with for the electric power that above-mentioned secondary cell body 10 is charged; And selector switch commutation circuit 30, make it possible to supply with independently different charging currents by 20 pairs of each secondary cell bodies 10 of above-mentioned constant current source generating circuit; Above-mentioned selector switch commutation circuit 30 has: selector switch 31, be connected respectively with each secondary cell body 10, and can consist of independently the charge path that this secondary cell body 10 is charged; And control circuit 40, the conduction and cut-off of a plurality of above-mentioned selector switches 31 is controlled; Above-mentioned control circuit 40 is by controlling the conduction and cut-off of above-mentioned selector switch 31, consists of with respect to the charge path of secondary cell body 10 arbitrarily and removes charge path with respect to other secondary cells; Above-mentioned constant current source generating circuit 20 possesses chopper circuit, and this chopper circuit comprises: reactor L is connected between above-mentioned supply lead-out terminal OT and the supply input terminal IT; And charging switch 22, be connected in series with above-mentioned reactor L, by above-mentioned control circuit 40 control conduction and cut-off; Above-mentioned chopper circuit is connected with external power source EP, above-mentioned secondary cell body 10 is charged.Thus, can access following advantage: can utilize a constant current source generating circuit that secondary cell body is arbitrarily charged, and can carry out independently the suitable charging corresponding with the electrical characteristic of this secondary cell body.In addition, by chopper circuit, for example as the boost chopper action, can use the external power source of low voltage that the secondary cell bulk charging is high voltage.
In addition, according to the supply unit of alternative plan, can possess: a plurality of secondary cell bodies 10, mutually be connected in series, possess respectively positive pole and negative pole; Constant current source generating circuit 20 possesses the supply lead-out terminal OT and the supply input terminal IT that supply with for the electric power that above-mentioned secondary cell body 10 is charged; A plurality of side of the positive electrode charge path PC and a plurality of negative side charge path NC, in order to charge by 20 pairs of each secondary cell bodies 10 of above-mentioned constant current source generating circuit, these a plurality of side of the positive electrode charge path PC are connected the positive pole of each secondary cell body 10 respectively with above-mentioned supply lead-out terminal OT, and these a plurality of negative side charge path NC are connected the negative pole of each secondary cell body 10 respectively with above-mentioned supply input terminal IT; A plurality of selector switches 31 are separately positioned among above-mentioned side of the positive electrode charge path PC and the negative side charge path NC; And control circuit 40, the conduction and cut-off of above-mentioned a plurality of selector switches 31 is controlled.Thus, can utilize a constant current source generating circuit that secondary cell body is arbitrarily charged, and can adjust charge volume according to the residual capacity of secondary cell body, therefore compare with the mode of charging with the secondary cell body integral body that is connected in series and to access following advantage: can reduce the deviation of the charge volume between the secondary cell body, can avoid overcharging and long-term safety higher usage secondary cell body.
And, according to the supply unit of third party's case, can constitute, also possess: voltage detection unit 26, detect the both end voltage of above-mentioned reactor L; Above-mentioned control circuit 40 is for secondary cell body 10 arbitrarily, with be configured in to this secondary cell body 10 be connected side of the positive electrode charge path PC that reactor L connects and each selector switch 31 among the negative side charge path NC and switch to respectively conducting, and other selector switches 31 are switched to cut-off, thereby this secondary cell body 10 is connected with above-mentioned reactor L, thus, can detect by above-mentioned voltage detection unit 26 cell voltage of this secondary cell body 10.Thus, can detect the arbitrarily cell voltage of secondary cell body by a voltage detection unit.That is, can only detect the cell voltage of each secondary cell body by a voltage detection unit, therefore not need each secondary cell body is arranged separately voltage sensor, can access the advantage that circuit is significantly simplified.
In addition, according to the supply unit of cubic case, above-mentioned control circuit 40 can with the time cut apart the cell voltage of each secondary cell body 10 measured.Thus, can detect successively by a voltage detection unit cell voltage of whole secondary cell bodies.
In addition, according to the supply unit of the 5th scheme, can constitute, above-mentioned control circuit 40 can carry out conduction and cut-off control to above-mentioned selector switch 31, so that simultaneously a plurality of secondary cell bodies 10 are arbitrarily charged.Thus, can be simultaneously to the control of charging of a plurality of secondary cell bodies, can charge efficiently.
And in addition, according to the supply unit of the 6th scheme, above-mentioned selector switch 31 is the elements that do not have from the arc extinguishing ability.Thus, can utilize the arc extinguishing of realizing selector switch between off period of chopper circuit, and do not need for the special adjunct circuit of arc extinguishing etc.
In addition, according to the supply unit of the 7th scheme, can consist of above-mentioned selector switch 31 by thyristor 32.Thus, dependability, the particularly reverse good thyristor of voltage endurance can access and need not the advantage that charging circuit just can charge to the secondary cell body of connecting independently be set to each secondary cell body.
In addition, according to the supply unit of all directions case, above-mentioned secondary cell body 10 consists of by a plurality of battery units are connected in series or are connected in parallel.Thus, the average charge that the secondary cell body that can realize being made of a plurality of battery units is connected in series.
In addition, charging circuit according to the 9th scheme, can charge to a plurality of secondary cell bodies 10 that mutually are connected in series and possess respectively anodal and negative pole, wherein, possess: constant current source generating circuit 20 possesses the supply lead-out terminal OT and the supply input terminal IT that supply with for the electric power that secondary cell body 10 is charged; A plurality of side of the positive electrode charge path PC and a plurality of negative side charge path NC, in order to charge by 20 pairs of each secondary cell bodies 10 of above-mentioned constant current source generating circuit, these a plurality of side of the positive electrode charge path PC can be connected the positive pole of each secondary cell body 10 respectively with above-mentioned supply lead-out terminal OT, and these a plurality of negative side charge path NC can be connected the negative pole of each secondary cell body 10 respectively with above-mentioned supply input terminal IT; A plurality of thyristors 32 are separately positioned among above-mentioned side of the positive electrode charge path PC and the negative side charge path NC; And control circuit 40, can carry out independently the conducting control of above-mentioned a plurality of thyristor 32, above-mentioned constant current source generating circuit 20 possesses chopper circuit, and this chopper circuit comprises: reactor L is connected between above-mentioned supply lead-out terminal OT and the supply input terminal IT; And charging switch 22, be connected in series with above-mentioned reactor L, by above-mentioned control circuit 40 control conduction and cut-off; Above-mentioned chopper circuit is connected with external power source EP, above-mentioned secondary cell body 10 is charged.Thus, can utilize a constant current source generating circuit that secondary cell body is arbitrarily charged, can adjust charge volume according to the residual capacity of secondary cell body, therefore compare with the mode of charging with the secondary cell body integral body of series connection, the advantage that can access is: the deviation that can reduce the charge volume between the secondary cell body, can avoid overcharging, can utilize for a long time the higher secondary cell body of fail safe.
Description of drawings
Fig. 1 is the block diagram of the supply unit of expression embodiments of the present invention.
Fig. 2 is the circuit diagram of the supply unit of presentation graphs 1.
The circuit diagram of Fig. 3 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10A.
The circuit diagram of Fig. 4 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10B.
The circuit diagram of Fig. 5 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10C.
The circuit diagram of Fig. 6 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10D.
The circuit diagram of Fig. 7 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10A, 10B.
The circuit diagram of Fig. 8 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10A, 10C.
The circuit diagram of Fig. 9 form that to be the supply unit of expression by Fig. 2 charge to secondary cell body 10A～10D.
Figure 10 is the circuit diagram of the supply unit of expression embodiment 1.
Figure 11 is the circuit diagram of circuit example of the supply unit of expression Figure 10.
Figure 12 is the circuit diagram of the supply unit of expression embodiment 2.
Figure 13 is the circuit diagram of circuit example of the supply unit of expression Figure 12.
Figure 14 is the circuit diagram of the supply unit of expression embodiment 3.
Figure 15 is the circuit diagram of circuit example of the supply unit of expression Figure 14.
Figure 16 is the circuit diagram of the supply unit of expression embodiment 4.
Figure 17 is the circuit diagram of circuit example of the supply unit of expression Figure 16.
Figure 18 is the circuit diagram of the supply unit of expression embodiment 5.
Figure 19 is the circuit diagram of circuit example of the supply unit of expression Figure 18.
Figure 20 is the circuit diagram of the supply unit of expression embodiment 6.
Figure 21 is the circuit diagram of circuit example of the supply unit of expression Figure 20.
Figure 22 is the circuit diagram of the supply unit of expression embodiment 7.
Figure 23 is the circuit diagram of circuit example of the supply unit of expression Figure 22.
Figure 24 (a) is the sequential chart of expression form that a secondary cell body is charged, and Figure 24 (b) is the circuit diagram of the current path of expression charging during with switch conduction, and Figure 24 (c) is the circuit diagram of the current path of expression charging during with switch 22 cut-off.
Figure 25 (a) is the sequential chart that a plurality of secondary cell bodies are charged successively, Figure 25 (b) is the circuit diagram of the current path when representing charging with switch conduction, Figure 25 (c) is the circuit diagram of the current path of expression the first secondary cell body when selected, Figure 25 (d) is the circuit diagram of the current path of expression the second secondary cell body 10B when selected, and Figure 25 (e) is the circuit diagram of the current path of expression N secondary cell body when selected.
Figure 26 is the circuit diagram that represents the charged state adjusting device of Battery pack in the past.
Embodiment
Below, with reference to the accompanying drawings embodiments of the present invention are described.But, execution mode example shown below be used for supply unit and charging circuit that technological thought of the present invention is specialized, the present invention is not defined in following situation with supply unit and charging circuit.In addition, the parts shown in claims are not defined in the parts of execution mode.Particularly, the size of the component parts of putting down in writing about execution mode, material, shape, its relative configuration etc. as long as no the record that is particularly limited, then only are not defined in this with scope of the present invention, and only are illustrative examples.In addition, the size of each parts shown in the drawings, position relationship etc. are sometimes for clearly exaggerating explanation.And in the following description, same names, Reference numeral represent the parts of identical or same nature, suitably detailed.And, consist of each key element of the present invention, also can become by same parts and consist of a plurality of key elements and double as the mode of a plurality of key elements with parts, also can share the function that realizes parts by a plurality of parts on the contrary.What have in illustrating in a part of execution mode, embodiment in addition, also can be used in other embodiment, execution mode etc.
Fig. 1～Figure 10 represents the supply unit 100 of an execution mode.In these figure, Fig. 1 is the block diagram of supply unit 100, Fig. 2 is the circuit diagram of an example of the supply unit 100 of presentation graphs 1, Fig. 3 is the circuit diagram of the supply unit 100 pair secondary cell body 10A of expression by Fig. 2 form of charging, Fig. 4 is the circuit diagram of expression form that secondary cell body 10B is charged, Fig. 5 is the circuit diagram of expression form that secondary cell body 10C is charged, Fig. 6 is the circuit diagram of expression form that secondary cell body 10D is charged, Fig. 7 is that expression is to secondary cell body 10A, the circuit diagram of the form that 10B charges, Fig. 8 is that expression is to secondary cell body 10A, the circuit diagram of the form that 10C charges, Fig. 9 is the circuit diagram of expression form that secondary cell body 10A～10D is charged, Figure 10 is the circuit diagram of supply unit 100 of expression embodiment 1, and Figure 11 is the circuit diagram of circuit example of the supply unit 100 of expression Figure 10.As shown in Figure 1, supply unit 100 possesses: a plurality of secondary cell bodies 10 of 10A～10N; Constant current source generating circuit 20, EP is connected with external power source, supplies with the electric power that charges for to secondary cell body 10; And selector switch commutation circuit 30, be connected between constant current source generating circuit 20 and the secondary cell body 10, can supply with independently different charging currents to each secondary cell body 10.This supply unit is connected with load LD and drives this load.In addition, external power source EP is the electric power source of supplying with for the electric power that supply unit is charged, for example in the situation of the quick charge station that applies the present invention to hybrid vehicle, being used for of being equivalent to that quick charge station possesses drives the used for charging pond of charging with battery to hybrid vehicle.In addition, also power supply or the source power supply itself that source power supply is carried out after the rectification can be used as external power source EP.In following example, direct voltage source is used as external power source EP.
(secondary cell body 10)
Each secondary cell body 10 possesses positive pole and negative pole, and a plurality of secondary cell bodies 10 are connected in series.Each secondary cell body 10 can also be connected in series a plurality of battery units or be connected in parallel and consist of except being made of a battery unit.The secondary cell that battery unit can utilize lithium rechargeable battery, Ni-MH battery, nickel-cadmium cell, lead accumulator etc. to charge.Lithium rechargeable battery particularly, the more large and small type of capacitance and the high output aspect of comparing per unit volume with Ni-MH battery are good, therefore more preferably.In addition, in the example of Fig. 2～Figure 11, in order easily to describe, secondary cell body 10 is expressed as four the structure that is connected with 10A～10D, but certainly the number of connection of secondary cell body is not limited to this, also can for more than 5 or 3 with inferior.
(constant current source generating circuit 20)
The constant current source generating circuit 20 of Fig. 1 possesses the lead-out terminal of supply OT and supplies with input terminal IT, charges by 30 pairs of each secondary cell bodies 10 of selector switch commutation circuit.Therefore, to possess the voltage transformation with external power source EP be to be suitable for the electric current of charging of secondary cell body 10 or the translation circuit of voltage to constant current source generating circuit 20.At this, produce constant current.For example, in the situation that lithium rechargeable battery is charged, under the low state of voltage ratio first voltage of secondary cell body 10, carry out constant current charge, when surpassing the first voltage, switch to constant voltage charge, before reaching than the high second voltage of the first voltage, carry out constant voltage charge, when reaching second voltage, be judged as and be full of electricity and complete charge.In addition, charge control method is an example, can suitably utilize other known charging methods according to the kind of the secondary cell body that uses etc.In addition, by charging described later is carried out conduction and cut-off control with switch 22, carry out this charging control.
(selector switch commutation circuit 30)
Selector switch commutation circuit 30 has: selector switch 31, be connected respectively with each secondary cell body 10, and can consist of independently the charge path that this secondary cell body 10 is charged; And control circuit 40, the conduction and cut-off of a plurality of selector switches 31 is controlled.Specifically, like that, the conduction and cut-off by a plurality of selector switches 31 consists of the charge path that constant current source generating circuit 20 and each secondary cell body 10 are connected independently shown in the circuit example of Fig. 2.More particularly, selector switch commutation circuit 30 comprises: a plurality of side of the positive electrode charge path PC, with the positive pole of each secondary cell body 10 with supply with lead-out terminal OT and be connected respectively; A plurality of negative side charge path NC, with the negative pole of each secondary cell body 10 with supply with input terminal IT and be connected respectively; A plurality of selector switches 31 are separately positioned among side of the positive electrode charge path PC and the negative side charge path NC; And control circuit 40, the conduction and cut-off of a plurality of selector switches 31 is controlled.So, can utilize a constant current source generating circuit 20, and by selector switch 31 a plurality of secondary cell bodies 10 be connected independently and to charge.Particularly by each secondary cell is connected with constant current source generating circuit 20 independently, can adjust charge volume according to the residual capacity of this secondary cell body 10 thus, therefore compare with the mode of charging with the secondary cell body integral body of series connection, the advantage that can access is: can reduce the deviation of the charge volume between the secondary cell body, avoid overcharging and can long-term safety higher usage secondary cell body.In addition, be not limited to the structure of singly the secondary cell body being charged, certainly can also charge simultaneously to a plurality of secondary cells.
(selector switch 31)
(thyristor 32)
At this, Figure 11 shows in the supply unit 100 of Figure 10, and selector switch 31 has used the circuit example of thyristor 32.In Figure 11, thyristor 32A～32H corresponds respectively to selector switch 31A～31H.In order to make each thyristor 32 conducting, and from control circuit 40 to thyristor 32 gate terminal input Continuity signal.On the other hand, end in order to make thyristor 32, and make charging described later with switch 22 cut-offs and the output of chopper circuit is stopped, making to the magnitude of current of thyristor 32 energisings is zero.Make thyristor 32 cut-offs by this arc extinguishing action, can make to the charging of secondary cell body 10 to stop.In addition, the reverse voltage endurance of thyristor 32 is good, and it is also easy that conducting drives, and can also obtain the advantage that drive circuit is simplified.
In addition, in the situation that selector switch 31 has used IGBT, can be by easily carry out the switching controls of conduction and cut-off from arc-suppression function from the signal utilization of control circuit 40.That is, can not need thyristor described above such, temporarily make the arc extinguishing action of current stops.On the contrary, the phase ratio inverse voltage endurances such as IGBT and thyristor are relatively poor, and therefore preferred check diode with protection usefulness is connected in series.
(control circuit 40)
As shown in Figure 2, the conduction and cut-off of 40 pairs of each selector switches 31 of control circuit is controlled.This control circuit is made of ASIC etc.In this embodiment, by the switching of selector switch 31, in the charge path that consists of with respect to secondary cell body 10 arbitrarily, remove the charge path with respect to other secondary cells.For example in the example of Fig. 3, by only making selector switch 31A, 31C conducting, making other selector switch 31 cut-offs, only secondary cell body 10A is connected with constant current source generating circuit 20 thus, other secondary cell bodies 10 from 20 dialysis of constant current source generating circuit, can be carried out the charging corresponding with the characteristic of secondary cell body 10A thus.And, when the charging of secondary cell body 10A finishes, then as shown in Figure 4, by making selector switch 31A, 31C cut-off, selector switch 31B and 31E being switched to conducting, only secondary cell body 10B is connected with constant current source generating circuit 20 thus, other secondary cell bodies 10 from 20 dialysis of constant current source generating circuit, can be carried out the charging corresponding with the characteristic of secondary cell body 10B thus.Equally, when the charging of secondary cell body 10B finishes, as shown in Figure 5, selector switch 31B and 31E are switched to cut-off, and selector switch 31D and 31G are switched to conducting, and the charging of beginning secondary cell body 10C.And, when the charging of secondary cell body 10C finishes, as shown in Figure 6, selector switch 31D and 31G are switched to cut-off, and selector switch 31F and 31H are switched to conducting, and the charging of beginning secondary cell body 10D.So, by the conduction and cut-off of switching selection switch 31 successively, can charge to whole secondary cell bodies 10.
So, can utilize a constant current source generating circuit 20, by 30 pairs of selector switch commutation circuits arbitrarily the secondary cell body carry out suitable charging.And, in the method, the secondary cell body that only charges is connected with the constant-current source generation device, therefore compare with the situation of the secondary cell body parallel connection of the object that will charge, can access the advantage that to carry out independently the suitable charging corresponding with the electrical characteristic of each secondary cell body of the object that charges etc.Particularly, in the different situation of the residual capacity of each secondary cell, if charge with identical electric current simultaneously, then the more specific secondary cell body of residual capacity is by quick charge, the result, if the charging to whole secondary cell bodies finishes to continue before charging, then become first the secondary cell body that is full of electricity and overcharged deteriorated may the progress.On the contrary, if with the less secondary cell body of residual capacity charging is finished, then produce following problem: can produce the secondary cell body of underfill electricity, thereby available electrical capacity reduces.If owing to so each secondary cell body is arranged respectively independently the charging circuit of special use, circuit structure will complicated so, and cost also improves.Therefore, in the present invention, can use a constant current source generating circuit, and by the separate connection between the realization of selector switch commutation circuit and each secondary cell body, independently charging circuit is not set thus, just can carries out charge independence by the constant current source generating circuit that shares.
In addition, according to the method, be particularly suitable for having the Ni-MH battery of negativity characteristic, the charging of nickel-cadmium cell.Namely, if having, Ni-MH battery etc. are full of the then characteristic of lower voltage of electricity, therefore if the state with parallel connection such as Ni-MH battery will be charged, then the voltage of each Ni-MH battery etc. rises gradually, and can reduce thereby can this battery be supplied with than multiple current owing to arriving first the voltage of the Ni-MH battery be full of electricity etc., the problem that has the reduction that can cause on the contrary voltage, is difficult to carry out the supply of suitable charging power.Relative therewith, according to the method for above-mentioned present embodiment, can carry out the independently charging of each secondary cell body, therefore can access the good advantage of the problem that can eliminate this same charging.
In addition, this charging device, can also be connected a plurality of secondary cell bodies and charge charging simultaneously except the secondary cell body is connected with external power source independently with external power source.For example in example shown in Figure 7, for secondary cell body 10A, 10B are charged simultaneously, and make selector switch 31A, E conducting, make other selector switches 31 cut-offs.Thus, can adjacent secondary cell body 10 be charged simultaneously.
In addition, be not limited to adjacent secondary cell body each other, can also to away from the secondary cell body charge simultaneously.For example in example shown in Figure 8, by making selector switch 31A, 31C, 31D, 31G conducting, making other selector switch 31 cut-offs, can charge simultaneously to secondary cell body 10A, 10C.And, as shown in Figure 9, by making selector switch 31A, 31H conducting, making other selector switch 31 cut-offs, can also charge simultaneously to secondary cell body 10A, 10B, 10C, the whole of 10D.So, by a plurality of secondary cell bodies are charged simultaneously, can carry out efficiently the charging of secondary cell body.In addition, in this circuit example, because the electric power of supplying with from the external power source side is constant, therefore irrelevant with the shorteningization of the needed time of charging theoretically.
(equalization regeneration action)
In above charging action, secondary cell body is independently charged respectively the equalization charging that can realize thus making the deviation of the electrical capacity between the resulting secondary cell body of result to reduce with suitable condition.On the other hand, when a plurality of secondary cell bodies are charged simultaneously, can also more directly suppress the deviation of the electrical capacity between the secondary cell body.Namely, under a plurality of secondary cell bodies that electrical capacity is different and state that the constant current source generating circuit is connected, the magnitude of current that flows into to the higher secondary cell body of cell voltage reduces, the magnitude of current that flows into to the lower secondary cell body of cell voltage correspondingly increases, therefore the secondary cell body that cell voltage is lower is as a result more charged, and the difference of electrical capacity changes to the direction that diminishes.
In addition, under the mains side of the electric power of supplying with charging usefulness can be regenerated the situation of moving, make the larger secondary cell body discharge of electrical capacity, producing circuit side to constant-current source regenerates, the result can also be assigned to this discharge energy in the charging of other secondary cell bodies, can further reduce the poor of electrical capacity thus.In this manual, this regeneration action is also referred to as equalization regeneration.For example, in the situation of the power supply that uses the such action of regenerating of hybrid vehicle, plug-in hybrid vehicle, can realize equalization between the secondary cell body by this regeneration action, therefore advantageous particularly.In addition, in any situation of the situation that the secondary cell body is connected with the constant current source generating circuit separately and situation that a plurality of secondary cell bodies are connected with the constant current source generating circuit, certainly can both realize the regeneration action.
So; by the deviation to the electrical capacity between the secondary cell body suppresses in the charging stage; whole secondary cell bodies suitably can be charged to as much as possible electrical capacity thus; and the state of affairs that can avoid a part of secondary cell body to be overcharged can be protected the secondary cell body and stablizes, utilizes with higher reliability chronically.In addition, according to this structure, can realize charging and capacity tolerance adjustment by identical circuit, therefore can realize the simplification of circuit structure and the simplification of processing.
(chopper circuit)
And, represent in Figure 10 that as embodiment 1 the detailed circuit of charging circuit is routine.Constant current source generating circuit 20 shown in this figure possesses chopper circuit, and this chopper circuit reaches the charging that is connected in series with this reactor L by reactor L and consists of with switch 22.Charging is connected in series with respect to external power source EP and reactor L with switch 22, by charging with the conducting of switch 22, consist of with external power source EP, reactor L, charge with switch 22 connected closed circuit.In addition, charging has been used thyristor with switch 22.In concrete example shown in Figure 11 described later, used IGBT as thyristor.IGBT can control the electric current of reactor L so that reactor L to can be to secondary cell body 10 supply capabilities accumulate electric energy towards (at Figure 10 to the right).
In addition, reactor L is connected to and supplies with between lead-out terminal OT and the supply input terminal IT, uses the conduction and cut-off of switch 22 by the charging that is connected in series, and realizes from the copped wave action of the electric power of external power source EP supply.That is, when making charging with switch 22 conducting, only supply with to reactor L from the electric power of external power source EP, when under this state, making charging switch to cut-off with switch 22 from conducting, the electric energy that reactor L accumulates is released, and, charges to secondary cell body 10 side inflows via charge path.By repeatedly carrying out this charging with the conduction and cut-off action of switch 22, supply with interrupted charging current to secondary cell body 10 thus, realize pulse current charge.Charge with the conduction and cut-off of switch 22 by control circuit 40.
In this example, constant current source generating circuit 20 is made of boost chopper.Boost chopper moves by boost chopper, can use the external power source EP of low voltage that secondary cell body 10 is charged as high voltage.But, be not limited to this structure, for example also can utilize stepping-up/stepping-down chopper circuit.In the situation that constant current source generating circuit 20 is worked as boost chopper, namely be selected as charging the cell voltage (for example 24V) of secondary cell body 10 of object than external power source EP(20V for example as the conditional request load) height.In the example of Figure 10, constant current source generating circuit 20 works as buck-boost chopper, therefore do not have this magnitude of voltage restriction, can utilize more neatly.In addition, Figure 11 shows the circuit example that in the circuit example of Figure 10 selector switch 31 has used thyristor 32.According to this structure, utilization was used as between off period of boost chopper of constant current source generating circuit 20, can make the thyristor cut-off that is used as selector switch 31, therefore can be in the situation that there be special rectification circuit (Commutation Circuit) to realize not can realizing having utilized extremely well the charging control of thyristor from the arc extinguishing of the thyristor of arc extinguishing ability.
In addition, in the example of Fig. 2, Figure 10 etc., carry out the control of constant current source generating circuit 20 and the control of selector switch commutation circuit 30 by a control circuit 40.But, being not limited to this structure, the constant current source generating circuit that the control of carrying out constant current source generating circuit 20 for example can also be set respectively certainly independently is with control circuit and the selected on-off circuit control circuit that carries out the control of selector switch commutation circuit 30.
(charging of embodiment 2 equalizations and equalization regeneration)
In addition, in Figure 10 etc., mainly show the circuit example that averages charging, but can also realize as described above the equalization regeneration of further equalization by the regeneration action.Represent in the circuit diagram of Figure 12 to realize that as embodiment 2 this equalization is charged and the circuit example of the supply unit of equalization regeneration.In addition, in following example, in order explanation to be simplified also only illustrate 3 (secondary cell bodies 10 of 10A～10C), and omit the diagram of other secondary cell bodies, but as described above, the number of connection of secondary cell body can at random be set.In addition, the supply unit 200 shown in this figure is connected with the power supply (for example set lithium ion battery of quick charge station) that can regenerate and move as external power source EP.
(regeneration switch 24)
The constant current source generating circuit 20 of Figure 12 is used the switch 22 except the charging of Figure 10, and also will regenerate is connected with reactor L with switch 24.Regeneration is same with switch 22 with switch 24 and charging, also can utilize the thyristors such as IGBT.Regeneration with switch 24 and charging with the opposite energising directions of using switch 24 towards ground regulation regeneration of switch 22, so that electric current flows through reactor L being sidelong on the electric direction (among Figure 12 left) from secondary cell body 10.Therefore, make regeneration have rectification function with switch 24, perhaps in series in the discharge path of regeneration usefulness, be connected the rectifier cells such as diode with regeneration with switch 24.Figure 13 shows in the circuit example of Figure 12 and has used thyristor 32 as selector switch 31, has used the circuit example of IGBT with switch 24 with switch 22 and regeneration as charging.So, charging has been used in the situation of rectifier cell with switch 24 with switch 22 and regeneration, can no longer need rectifier cell.In addition, between emitter-collector electrode of each IGBT, be connected with respectively diode reverse parallel connection.These diodes play the effect that the bad IGBT of reverse voltage endurance is protected as being used for the energy of reactor L savings to 10 chargings of secondary cell body or to the path of external power source EP regeneration.In the charging action of the supply unit 200 shown in this figure, the outer power voltage E of external power source EP
EPCell voltage E with secondary cell body 10
10Between the pass be, in the situation that secondary cell body 10 and constant current source generating circuit 20 separate connection, E
EP＜E
10On the other hand, in regeneration action, if to establish the series connection quantity of secondary cell body 10 be n and ignore the voltage deviation of each secondary cell body, E then
EP＞E
10* n.So, when the charging action, can charge with the outer power voltage lower than each cell voltage, and when taking out electric power by the regeneration action to the outside, outer power voltage also needs height to more than the total voltage of the cell voltage body that is connected in series, even say on the contrary the action of also can regenerating of lower cell voltage, therefore, realize having used effectively discharging and recharging of secondary cell body.
(embodiment 3)
In addition, regeneration is not limited to shown in the connection example of Figure 12 such structure that is connected respectively with the two ends of reactor L with switch 24, for example certainly can be such as embodiment 3 as shown in Figure 14, connect in the mode in the end branch of reactor L.In addition, Figure 15 shows that selector switch 31 has used thyristor 32 in the circuit example of the supply unit 300 of Figure 14, and charging has used the circuit of IGBT routine with switch 22 and regeneration with switch 24.
In addition, although not shown, the regeneration shown in these figure also is connected with control circuit 40 with switch 24, controls regeneration switch 24 conduction and cut-off by control circuit 40.In Figure 12, supply unit 200,300 shown in Figure 14, when charging with 22 pairs of secondary cell bodies 10 of switch via charging, will be regenerated by control circuit 40 is set as cut-off with switch 24.On the other hand, when the regeneration action that the excrescent electric power of secondary cell body 10 is discharged to external power source EP side, switch by control circuit 40, discharge on the contrary with switch be switched to cut-off, regenerating becomes conducting with switch 24.Thus, can make secondary cell body discharge and electrical capacity is reduced, and discharge energy can be supplied with and recycled to external power source, obtain to utilize efficiently the advantage of energy.In the purposes of the such energy efficiency of having relatively high expectations of electric automobile, hybrid vehicle, be very effective particularly.
(embodiment 4)
Otherwise the action in the situation that do not regenerate can be adopted as shown in Figure 16 circuit structure as embodiment 4.Supply unit 400 shown in this example, except the charging of Figure 10 with the switch 22, also being provided with charging usefulness diode 23 at the end (right side among the figure) of reactor L between the lead-out terminal OT with supplying with.Charging stops from secondary cell body 10 side direction external power source EP side inflow electric currents with diode 23, therefore forbids the regeneration action in this circuit, only averages charging.Figure 17 shows that selector switch 31 has used thyristor 32 in the circuit example of Figure 16, and the example of IGBT has been used in charging with switch 22.
(embodiment 5)
In addition, be not limited to the circuit example of Figure 16, for example can also adopt the such structure of Figure 18 as embodiment 5.In the example of supply unit shown in Figure 180 500, the charging that is connected with the end of reactor L is not to be connected in phase the same side with switch 22 with charging, but is connected with the other end of reactor L with diode 23.In this structure, same charging also can be forbidden from secondary cell body 10 side direction external power source EP side inflow electric currents with diode 23.Figure 19 shows that selector switch 31 has used thyristor 32 in the circuit example of Figure 18, and the example of IGBT has been used in charging with switch 22.
(embodiment 6)
And, on the other hand, figure 20 illustrates for the circuit example that only averages the regeneration action as embodiment 6.In the supply unit 600 shown in this circuit example, the charging switch is not set, will regenerating of generation is connected with the end of reactor L with diode 25 with being connected with switch 24.Figure 21 shows that selector switch 31 has used thyristor 32 in the circuit example of Figure 20, and regeneration has used the circuit of IGBT routine with switch 24.
(embodiment 7)
In addition, as embodiment 7, figure 22 illustrates the circuit example of other supply units 700.In embodiment 7, such as shown in Figure 22, regeneration is with the link position of switch 24, is not that end with respect to reactor L is positioned at regeneration with the identical side of diode 25, but is connected with the other end side.In this structure, regeneration allows to move from the regeneration of secondary cell body 10 side direction external power source EP sides with switch 24, and regeneration is forbidden the charging action with diode 25.In addition, Figure 23 shows in the circuit example of Figure 22, and selector switch 31 has used thyristor 32, and the circuit example of IGBT has been used in regeneration with switch 24.
(voltage detection unit 26)
And, possess the voltage detection unit 26 for detection of the reactor both end voltage at the two ends of reactor L.This voltage detection unit 26 is such as being made of differential amplifier, resistor etc.Voltage detection unit 26 by selector switch commutation circuit 30 with under constant current source generating circuit 20 and secondary cell body 10 has carried out being connected arbitrarily the state, detect the reactor both end voltage, can detect thus the voltage of secondary cell body 10.For example, in the circuit example of Figure 10, only make selector switch 31A and selector switch 31C conducting by the control of control circuit 40, make other selector switch 31 cut-offs.If under this state secondary cell body 10A is charged, then the voltage that occurs of reactor both end voltage equates with the cell voltage of secondary cell body 10, therefore can detect by voltage detection unit 26 cell voltage of secondary cell body 10.In addition, if switch charge path by control circuit 40, then can detect successively the cell voltage of each secondary cell body 10.So, voltage detection unit 26 can scan, immediately divide the cell voltage of ceding territory to measure whole secondary cell bodies 10 by 40 pairs of each secondary cell bodies 10 of control circuit.Namely, just can detect the cell voltage of a plurality of secondary cell bodies 10 by a voltage detection unit 26, and the switching of secondary cell body 10 can utilize the selector switch 31 of above-mentioned charging usefulness to carry out, therefore need hardly to increase number of components, just can obtain to be used in the advantage that the circuit structure of the cell voltage of the whole secondary cell bodies 10 of detection is extremely simplified.
In addition, the detection of the cell voltage of each secondary cell body 10 is preferably carried out before the beginning of charging.Particularly, owing to can come according to the cell voltage of secondary cell body 10 computing SOC, therefore can be adjusted to suitable charging current on the basis of having grasped in advance the residual capacity of each secondary cell body 10.In addition, in charging process, on one side can also be on one side monitor the form of charging at suitable timing, the cell voltage that for example detects secondary cell body 10 with some cycles by voltage detection unit 26.
As described above, the cell voltage of secondary cell body 10 can detect before charging beginning, and perhaps the regulation with some cycles etc. regularly detects in charging process.And when the cell voltage of secondary cell body 10 reached certain voltage, control circuit 40 made selector switch 31 cut-offs, finishes the charging to this secondary cell.
(sequential chart)
Next, Figure 24～Figure 25 shows the sequential chart that the action to the supply unit of embodiment 1 represents.At this, show charging during with switch 22 conducting and the thyristor 32A～32N when ending respectively select circuit and current path.In addition, supply unit is connected voltage detection unit 26 as an example with sample-and-hold circuit SH.In these figure, Figure 24 (a)～Figure 24 (c) shows the form that secondary cell body 10A is charged, Figure 24 (a) shows the sequential chart that the waveform to each several part represents, current path when the current path when Figure 24 (b) shows charging with switch 22 conducting, Figure 24 (c) show charging with switch 22 cut-off.In Figure 24 (a), at the voltage waveform e of inductance L
xThe hurdle of square wave in, shown in (b) like that, in charging during with switch 22 conducting, towards the electric current I of inductance L
LIncrease, not flowing among the thyristor 32A has electric current I
32AAnd become cut-off.On the other hand, at the e of Figure 24 (a)
xThe hurdle in, shown in (c) like that, in charging during with switch 22 cut-off, thyristor 32A conducting by signal, flowing has electric current I
32A, towards the electric current I of inductance L
LReduce.In addition, in Figure 24 (b)～Figure 24 (c), the conducting state of thyristor 32 represents with blacking, and cut-off state is with hollow expression.When switch 22 conducting was used in charging, thyristor 32A can end.The electric current I of thyristor 32A
32ABecome such impulse waveform shown in Figure 24 (a).In addition, the voltage e at the two ends of inductance L
x, shown in Figure 24 (a), like that, become the voltage E that alternately applies external power source EP
PVoltage E with secondary cell body 10A
10ARectangle wavy.And, by the Sample ﹠ hold action to voltage detection unit 26, can detect the voltage E of secondary cell body 10A
10A
In addition, Figure 25 (a)～Figure 25 (e) shows the form that secondary cell body 10A～10N is charged.In the figure, Figure 25 (a) shows the sequential chart that the waveform to each several part represents, current path when Figure 25 (b) shows charging with switch 22 conducting, Figure 25 (c) shows that charging ends with switch 22 and current path when having selected secondary cell body 10A, current path when Figure 25 (d) shows charging and selected secondary cell body 10B with switch 22 cut-off, Figure 25 (e) expression charging end with switch 22 and current path when having selected secondary cell body 10N.
In Figure 25 (a), (b)/(c) expression to secondary cell body 10A charge during, carry out the action of above-mentioned Figure 24.In this period, at first such shown in Figure 25 (b), when switch 22 conducting is used in charging, towards the electric current I of inductance L
LIncrease, not flowing among 32A～32N has electric current and becomes cut-off.In addition, like that, when charging ended with switch 22 and selected secondary cell body 10A, thyristor 32A passed through signal and conducting shown in Figure 25 (c), and flowing has electric current I
32A, towards the electric current I of inductance L
LReduce.In this period, repeat the action of these Figure 25 (b) and Figure 25 (c), so the voltage e at the two ends of inductance L
xBecome the voltage EP that alternately applies external power source EP and the voltage E of secondary cell body 10A
10ASquare wave.
And, in Figure 25 (a), (b)/(d) expression to secondary cell body 10B charge during.During this (b)/(d), such shown in Figure 25 (b) with same during above-mentioned (b)/(c), when switch 22 conducting is used in charging, towards the electric current I of inductance L
LIncrease, not flowing among thyristor 32A～32N has electric current and becomes cut-off.And, in Figure 25 (d), when charging ends with switch 22 and has selected secondary cell body 10B, thyristor 32B conducting by signal, flowing has electric current I
32B, towards the electric current I of inductance L
LReduce.During this (b)/(d), the voltage e at the two ends of inductance L
xBecome the voltage EP that alternately applies external power source EP and the voltage E of secondary cell body 10B
10BSquare wave.
And, in Figure 25 (a), (b)/(e) expression to secondary cell body 10N charge during.During this (b)/(e), also with above-mentioned (b)/(c) during, same during (b)/(d), shown in Figure 25 (b) like that, in charging during with switch 22 conducting, towards the electric current I of inductance L
LIncrease, not flowing among thyristor 32A～32N has electric current and becomes cut-off.And, in Figure 25 (e), when charging ends with switch 22 and has selected secondary cell body 10N, thyristor 32N conducting by signal, flowing has electric current I
32N, towards the electric current I of inductance L
LReduce.The voltage e at the two ends of the inductance L during this (b)/(e)
xVoltage EP and voltage E for the external power source EP that alternately applies
10N
In addition, in the example of Figure 25, by the Sample ﹠ hold action of sample-and-hold circuit SH, also can be at the output e of sample-and-hold circuit SH
BIn detect the voltage E of selected each secondary cell body
10A～E
10NIn addition, voltage detection unit is not limited to sample-and-hold circuit, also can suitably utilize other structures.
As described above, according to the present invention, by extremely simple circuit structure, can carry out the equalization charging control of each secondary cell body, therefore need in the electric automobile of high voltage, the situation without the direct voltage source of power failure power supply etc. in formation, system configuration can extremely be simplified, and does not produce and discharge and recharge, therefore long lifetime and the fail safe of secondary cell body can be improved, and cost degradation can be realized.
The industry utilizability
Supply unit of the present invention and charging circuit can be used in the driving power supply of hybrid vehicle, plug-in hybrid vehicle, electric automobile etc. well.In addition, be not limited to vehicle power, can also be used in auxiliary bike, electric tool, without the driving of power failure power supply (UPS), factory with other supply units such as jumbo secondary battery unit that utilize in the power supply etc.
Description of reference numerals
100,200,300,400,500,600,700 ... supply unit
10,10A, 10B, 10C, 10D, 10N ... the secondary cell body
20 ... the constant current source generating circuit
22 ... the charging switch
23 ... the charging diode
24 ... the regeneration switch
25 ... the regeneration diode
26 ... voltage detection unit
30 ... the selector switch commutation circuit
31,31A～31H ... selector switch
32,32A～32H ... thyristor
40 ... control circuit
90 ... the charged state adjusting device
91 ... the unit cell battery
92 ... the average charge capacitor
93 ... the circulation linkage unit
EP ... external power source
OT ... supply with lead-out terminal
IT ... supply with input terminal
LD ... load
PC ... the side of the positive electrode charge path
NC ... the negative side charge path
L ... reactor
Claims (9)
1. supply unit is characterized in that possessing:
A plurality of secondary cell bodies (10) are connected in series mutually, possess respectively positive pole and negative pole;
Constant current source generating circuit (20) possesses supply lead-out terminal (OT) and the supply input terminal (IT) supplied with for the electric power that above-mentioned secondary cell body (10) is charged; And
Selector switch commutation circuit (30) makes it possible to by above-mentioned constant current source generating circuit (20) each secondary cell body (10) be supplied with different charging currents independently,
Above-mentioned selector switch commutation circuit (30) has:
Selector switch (31) is connected respectively with each secondary cell body (10), can consist of independently the charge path that this secondary cell body (10) is charged; And
Control circuit (40) is controlled the conduction and cut-off of a plurality of above-mentioned selector switches (31);
Above-mentioned control circuit (40) is by controlling the conduction and cut-off of above-mentioned selector switch (31), consists of with respect to the charge path of secondary cell body (10) arbitrarily and removes charge path with respect to other secondary cells;
Above-mentioned constant current source generating circuit (20) possesses chopper circuit, and this chopper circuit comprises:
Reactor (L) is connected between above-mentioned supply lead-out terminal (OT) and the supply input terminal (IT); And
Charging switch (22), (L) is connected in series with above-mentioned reactor, by above-mentioned control circuit (40) control conduction and cut-off;
Above-mentioned chopper circuit is connected with external power source (EP), above-mentioned secondary cell body (10) is charged.
2. supply unit is characterized in that possessing:
A plurality of secondary cell bodies (10) are connected in series mutually, possess respectively positive pole and negative pole;
Constant current source generating circuit (20) possesses supply lead-out terminal (OT) and the supply input terminal (IT) supplied with for the electric power that above-mentioned secondary cell body (10) is charged;
A plurality of side of the positive electrode charge paths (PC) and a plurality of negative side charge path (NC), in order by above-mentioned constant current source generating circuit (20) each secondary cell body (10) to be charged, these a plurality of side of the positive electrode charge paths (PC) are connected the positive pole of each secondary cell body (10) respectively with above-mentioned supply lead-out terminal (OT), and these a plurality of negative side charge paths (NC) are connected the negative pole of each secondary cell body (10) respectively with above-mentioned supply input terminal (IT);
A plurality of selector switches (31) are separately positioned in above-mentioned side of the positive electrode charge path (PC) and the negative side charge path (NC); And
Control circuit (40) is controlled the conduction and cut-off of above-mentioned a plurality of selector switches (31).
3. supply unit as claimed in claim 1 or 2 is characterized in that,
Also possess:
Voltage detection unit (26) detects the both end voltage of above-mentioned reactor (L);
Above-mentioned control circuit (40) is for secondary cell body (10) arbitrarily, to be configured in to this secondary cell body (10) be connected side of the positive electrode charge path (PC) that reactor (L) connects and each selector switch (31) in the negative side charge path (NC) and switch to respectively conducting, and other selector switches (31) are switched to cut-off, thereby this secondary cell body (10) is connected with above-mentioned reactor (L), thus, can detect by above-mentioned voltage detection unit (26) cell voltage of this secondary cell body (10).
4. such as each described supply unit in the claim 1～3, it is characterized in that,
Above-mentioned control circuit (40) with the time cut apart the cell voltage of each secondary cell body (10) measured.
5. such as each described supply unit in the claim 1～4, it is characterized in that,
Above-mentioned control circuit (40) can carry out conduction and cut-off control to above-mentioned selector switch (31), so that simultaneously a plurality of secondary cell bodies (10) are arbitrarily charged.
6. such as each described supply unit in the claim 1～5, it is characterized in that,
Above-mentioned selector switch (31) is the element that does not have from the arc extinguishing ability.
7. such as each described supply unit in the claim 1～6, it is characterized in that,
Above-mentioned selector switch (31) is thyristor (32).
8. such as each described supply unit in the claim 1～7, it is characterized in that,
Above-mentioned secondary cell body (10) consists of by a plurality of battery units are connected in series or are connected in parallel.
9. charging circuit can charge to a plurality of secondary cell bodies (10) that mutually are connected in series and possess respectively anodal and negative pole, it is characterized in that possessing:
Constant current source generating circuit (20) possesses supply lead-out terminal (OT) and the supply input terminal (IT) supplied with for the electric power that secondary cell body (10) is charged;
A plurality of side of the positive electrode charge paths (PC) and a plurality of negative side charge path (NC), in order by above-mentioned constant current source generating circuit (20) each secondary cell body (10) to be charged, these a plurality of side of the positive electrode charge paths (PC) can be connected the positive pole of each secondary cell body (10) respectively with above-mentioned supply lead-out terminal (OT), and these a plurality of negative side charge paths (NC) can be connected the negative pole of each secondary cell body (10) respectively with above-mentioned supply input terminal (IT);
A plurality of thyristors (32) are separately positioned in above-mentioned side of the positive electrode charge path (PC) and the negative side charge path (NC); And
Control circuit (40) can carry out the conducting control of above-mentioned a plurality of thyristor (32) independently,
Above-mentioned constant current source generating circuit (20) possesses chopper circuit, and this chopper circuit comprises:
Reactor (L) is connected between above-mentioned supply lead-out terminal (OT) and the supply input terminal (IT); And
Charging switch (22), (L) is connected in series with above-mentioned reactor, by above-mentioned control circuit (40) control conduction and cut-off;
Above-mentioned chopper circuit is connected with external power source (EP), above-mentioned secondary cell body (10) is charged.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010109711 | 2010-05-11 | ||
| JP2010-109711 | 2010-05-11 | ||
| PCT/JP2011/060788 WO2011142369A2 (en) | 2010-05-11 | 2011-05-10 | Power supply device and charge circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102934317A true CN102934317A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800233256A Pending CN102934317A (en) | 2010-05-11 | 2011-05-10 | Power supply device and charge circuit |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5794982B2 (en) |
| KR (1) | KR20130079419A (en) |
| CN (1) | CN102934317A (en) |
| WO (1) | WO2011142369A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112550073A (en) * | 2020-11-30 | 2021-03-26 | 嘉兴东大智宇科技有限公司 | Power battery active equalization system for electric forklift |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018220900A1 (en) * | 2017-06-01 | 2018-12-06 | 三菱電機株式会社 | Power supply device |
| CN107444561B (en) * | 2017-08-16 | 2022-10-11 | 二工防爆科技股份有限公司 | Explosion-proof electric bicycle |
| AU2018432187B2 (en) * | 2018-12-21 | 2021-09-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Charging method and apparatus for multiple cells, medium and electronic device |
| CN112994126A (en) * | 2019-12-13 | 2021-06-18 | 北京小米移动软件有限公司 | Charging circuit, electronic device, charging method and device |
| JP7513402B2 (en) | 2020-02-04 | 2024-07-09 | 矢崎総業株式会社 | Battery control unit and battery system |
| JP7325613B2 (en) * | 2020-03-26 | 2023-08-14 | 三菱電機株式会社 | Power supply device and assembled battery charging method |
| CN113921919B (en) * | 2021-08-25 | 2024-06-25 | 东风汽车集团股份有限公司 | Battery system and vehicle |
| JP7020737B1 (en) | 2021-09-16 | 2022-02-16 | 大西 徳生 | Charge control device |
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- 2011-05-10 CN CN2011800233256A patent/CN102934317A/en active Pending
- 2011-05-10 KR KR1020127031700A patent/KR20130079419A/en not_active Application Discontinuation
- 2011-05-10 JP JP2012514814A patent/JP5794982B2/en not_active Expired - Fee Related
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| CN112550073A (en) * | 2020-11-30 | 2021-03-26 | 嘉兴东大智宇科技有限公司 | Power battery active equalization system for electric forklift |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5794982B2 (en) | 2015-10-14 |
| JPWO2011142369A1 (en) | 2013-07-22 |
| KR20130079419A (en) | 2013-07-10 |
| WO2011142369A3 (en) | 2012-02-02 |
| WO2011142369A2 (en) | 2011-11-17 |
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