CN103269099B - Battery charge-discharge circuit - Google Patents
Battery charge-discharge circuit Download PDFInfo
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- CN103269099B CN103269099B CN201310192070.7A CN201310192070A CN103269099B CN 103269099 B CN103269099 B CN 103269099B CN 201310192070 A CN201310192070 A CN 201310192070A CN 103269099 B CN103269099 B CN 103269099B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention relates to a kind of battery charge-discharge circuit, it comprises power supply, for controlling the charging paths of the size of battery being carried out to charging operations and charging current, for controlling the discharge paths of the size of battery being carried out to discharge operation and discharging current; And the protection branch road of normal discharge and recharge operation is carried out for the protection of battery charge-discharge circuit.Battery charge-discharge circuit of the present invention is avoided using dissipative cell, improves the operating efficiency of whole battery charge-discharge circuit, not easily produces heat dissipation problem simultaneously, can realize multiple charge-discharge circuit parallel connection and charge and discharge operation to high capacity cell simultaneously.And the short circuit of any single device or damage all can not cause charge-discharge circuit global failure; Whole battery charge-discharge circuit has efficiently, safety, can in parallel, the feature that is beneficial to heat radiation.
Description
Technical field
The present invention relates to circuit design field, particularly relate to a kind of efficient, safety, can in parallel, the battery charge-discharge circuit that is beneficial to heat radiation.
Background technology
Battery needs the operation it being carried out to a series of discharge and recharge in the process of producing, along with the development of power vehicle, high-power memory device and lithium battery technology, the capacity of battery is increasing, also more and more higher to the requirement of battery charge-discharge circuit like this, safety problem and efficiency become the key issue in battery charge-discharge circuit.
Please refer to Fig. 1, Fig. 1 is the circuit diagram of existing battery charge-discharge circuit.Wherein BUS+, BUS-are the power supply of this battery charge-discharge circuit, and SW1 is charge switch, and SW2 is discharge switch, and D1 is charging anti-reverse charging diode, and D2 is discharge-preventing reversal connection short circuit diode, and BAT is battery, and R1 is sampling resistor.When this battery charge-discharge circuit is charged, the electric current of power supply through BUS+, charge switch SW1, charge and anti-downly fill diode D1, battery BAT and sampling resistor R1, finally flow back to the BUS-of power supply; The anti-reverse charging diode D1 that wherein charges can prevent the reverse charging of power supply (BUS+ and the BUS-) charge circuit when not working.When this battery charge-discharge circuit is discharged, battery BAT forms discharge loop through discharge-preventing reversal connection short circuit diode D2, electric switch SW2 and sampling resistor R1; Abnormal discharge when wherein discharge-preventing reversal connection short circuit diode D2 can prevent battery BAT reversal connection.
But the charging against short-circuit diode D1 in this battery charge-discharge circuit is arranged in charge circuit, significantly reduces the efficiency of whole charge circuit, and easily produces heating problem.In addition, the dangerous consequences that may cause after charge switch SW1, discharge switch SW2 or other component failure is not protected in circuit, cause coefficient of safety low.Therefore the operating efficiency of existing battery charge-discharge circuit is lower and reliability is poor, and constitutes certain threat to the safety of battery and operating personnel in actual use procedure.
Therefore, be necessary to provide a kind of battery charge-discharge circuit, to solve the problem existing for prior art.
Summary of the invention
The object of the present invention is to provide a kind of efficient, safety, can in parallel, the battery charge-discharge circuit that is beneficial to heat radiation; It anti-downly fills battery when switching tube prevents power supply from not working by arranging and, to power supply back discharge, avoids using dissipative cell in charge circuit, improve the operating efficiency of whole battery charge-discharge circuit; Not easily there is heat dissipation problem simultaneously; Charge switch pipe, discharge switch pipe, anti-downly fill in switching tube, the short circuit of any single device or damage and all can not cause the straight-through of charge-discharge circuit, therefore the reliability of whole battery charge-discharge circuit is better; The technical problem lower with the operating efficiency solving existing battery charge-discharge circuit and reliability is poor.
For solving the problem, technical scheme provided by the invention is as follows:
A kind of battery charge-discharge circuit is provided, comprises:
Power supply;
Charging paths, for controlling the size of battery being carried out to charging operations and charging current;
Discharge paths, for controlling the size of battery being carried out to discharge operation and discharging current; And
Protection branch road, carries out normal discharge and recharge operation for the protection of described battery charge-discharge circuit;
The input of described charging paths is connected with the positive pole of described power supply; the output of described charging paths is connected with the input of described discharge paths and the input of described protection branch road respectively, and the output of described discharge paths is connected with the output of described protection branch road and the negative pole of described power supply respectively.
In battery charge-discharge circuit of the present invention, described protection branch road comprises and anti-downly fills switching tube, described anti-down switching tube and the described serial battery of filling is in described protection branch road, the described anti-down input filling switching tube is connected with the input of described protection branch road, and the described anti-down output filling switching tube is connected with the output of described protection branch road; The positive pole of described battery is connected with the input of described protection branch road, and the negative pole of described battery is connected with the output of described protection branch road.
In battery charge-discharge circuit of the present invention, described charging paths comprises charge switch pipe, and the input of described charge switch pipe is connected with the input of described charging paths, and the output of described charge switch pipe is connected with the output of described charging paths.
In battery charge-discharge circuit of the present invention, described discharge paths comprises discharge switch pipe and discharge-preventing reversal connection short circuit diode, described discharge switch pipe and described discharge-preventing reversal connection short circuit Diode series are in described discharge paths, the input of described discharge switch pipe is connected with the input of described discharge paths, and the output of described discharge switch pipe is connected with the output of described discharge paths; The anode of described discharge-preventing reversal connection short circuit diode is connected with the input of described discharge paths, and the negative electrode of described discharge-preventing reversal connection short circuit diode is connected with the output of described discharge paths.
In battery charge-discharge circuit of the present invention, described charging paths also comprises charging protective tube, and described charging protective tube and described charge switch pipe are connected in described charging paths.
In battery charge-discharge circuit of the present invention, described discharge paths also comprises electric discharge heat-sink unit, and described electric discharge heat-sink unit and described discharge switch pipe are connected in described discharge paths.
In battery charge-discharge circuit of the present invention, described electric discharge heat-sink unit is at least one electric discharge heat radiation diode; The anode of described electric discharge heat radiation diode is connected with the input of described discharge paths, and the negative electrode of described electric discharge heat radiation diode is connected with the output of described discharge paths.
In battery charge-discharge circuit of the present invention, described electric discharge heat-sink unit is the loose thermal diode stacks of the heat radiation diode composition of multiple mutual series connection, the anode of the first diode of described loose thermal diode stacks is connected with the input of described discharge paths, and the negative electrode of last diode of described loose thermal diode stacks is connected with the output of described discharge paths
In battery charge-discharge circuit of the present invention, described discharge paths also comprises short switch pipe, described short switch pipe and described electric discharge heat-sink unit are connected in parallel in described discharge paths, described short switch pipe and described discharge switch pipe are connected in described discharge paths, the input of described short switch pipe is connected with the input of described discharge paths, and the output of described short switch pipe is connected with the output of described discharge paths.
In battery charge-discharge circuit of the present invention, described discharge paths also comprises electric discharge protective tube, and described electric discharge protective tube and described discharge switch pipe are connected in described discharge paths.
In battery charge-discharge circuit of the present invention, described battery charge-discharge circuit also comprises:
Sampling resistor, for sampling to charging current or discharging current, described sampling resistor and the described anti-down switching tube that fills are connected in described protection branch road.
In battery charge-discharge circuit of the present invention, the positive pole of described battery is connected by the input of described sampling resistor with described protection branch road.
In battery charge-discharge circuit of the present invention, the described anti-down switching tube that fills is that at least one has the field-effect transistor of parasitic diode;
The described anti-down negative electrode filling the parasitic diode of switching tube is connected with the described anti-down output filling switching tube, and the described anti-down anode filling the parasitic diode of switching tube is connected with the described anti-down input filling switching tube.
In battery charge-discharge circuit of the present invention, described charge switch pipe is that at least one has the field-effect transistor of parasitic diode;
The negative electrode of the parasitic diode of described charge switch pipe is connected with the input of described charge switch pipe, and the anode of the parasitic diode of described charge switch pipe is connected with the output of described charge switch pipe.
In battery charge-discharge circuit of the present invention, described discharge switch pipe is that at least one has the field-effect transistor of parasitic diode;
The negative electrode of the parasitic diode of described discharge switch pipe is connected with the input of described discharge switch pipe, and the anode of the parasitic diode of described discharge switch pipe is connected with the output of described discharge switch pipe.
In battery charge-discharge circuit of the present invention, described protection branch road comprises and anti-downly fills switching tube, described anti-down switching tube and the described serial battery of filling is in described protection branch road, the described anti-down input filling switching tube is connected with the input of described protection branch road, and the described anti-down output filling switching tube is connected with the output of described protection branch road; The positive pole of described battery is connected with the input of described protection branch road, and the negative pole of described battery is connected with the output of described protection branch road;
Described charging paths comprises charge switch pipe, and the input of described charge switch pipe is connected with the input of described charging paths, and the output of described charge switch pipe is connected with the output of described charging paths;
Described discharge paths comprises discharge switch pipe and discharge-preventing reversal connection short circuit diode, described discharge switch pipe and described discharge-preventing reversal connection short circuit Diode series are in described discharge paths, the input of described discharge switch pipe is connected with the input of described discharge paths, and the output of described discharge switch pipe is connected with the output of described discharge paths; The anode of described discharge-preventing reversal connection short circuit diode is connected with the input of described discharge paths, and the negative electrode of described discharge-preventing reversal connection short circuit diode is connected with the output of described discharge paths;
Described charge switch pipe, described discharge switch pipe and the described anti-down switching tube that fills are the field-effect transistor that at least one has parasitic diode;
The negative electrode of the parasitic diode of described charge switch pipe is connected with the input of described charge switch pipe, and the anode of the parasitic diode of described charge switch pipe is connected with the output of described charge switch pipe;
The negative electrode of the parasitic diode of described discharge switch pipe is connected with the input of described discharge switch pipe, and the anode of the parasitic diode of described discharge switch pipe is connected with the output of described discharge switch pipe;
The described anti-down negative electrode filling the parasitic diode of switching tube is connected with the described anti-down output filling switching tube, and the described anti-down anode filling the parasitic diode of switching tube is connected with the described anti-down input filling switching tube.
Compared to existing battery charge-discharge circuit, battery charge-discharge circuit of the present invention is by arranging the anti-down battery that to fill when switching tube prevents power supply from not working to power supply back discharge, avoid using dissipative cell in charge circuit, improve the operating efficiency of whole battery charge-discharge circuit; Not easily there is heat dissipation problem simultaneously; Charge switch pipe, discharge switch pipe, anti-downly fill in switching tube, the short circuit of any single device or damage all can not cause the straight-through of charge-discharge circuit, therefore the reliability of whole battery charge-discharge circuit is better, solves the technical problem that operating efficiency is lower and reliability is poor of existing battery charge-discharge circuit.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below:
Accompanying drawing explanation
Fig. 1 is the circuit diagram of existing battery charge-discharge circuit;
Fig. 2 is the physical circuit figure of the first preferred embodiment of battery charge-discharge circuit of the present invention;
Fig. 3 is the physical circuit figure of the second preferred embodiment of battery charge-discharge circuit of the present invention;
Fig. 4 is the physical circuit figure of the 3rd preferred embodiment of battery charge-discharge circuit of the present invention.
Embodiment
The explanation of following embodiment is graphic with reference to what add, can in order to the specific embodiment implemented in order to illustrate the present invention.
In the drawings, the unit of structural similarity represents with identical label.
Please refer to Fig. 2, Fig. 2 is the physical circuit figure of the first preferred embodiment of battery charge-discharge circuit of the present invention.The battery charge-discharge circuit of this preferred embodiment comprises power supply, charging paths 21, discharge paths 22 and protection branch road 23.Charging paths 21 is for controlling the size of battery BAT being carried out to charging operations and charging current; Discharge paths 22 is for controlling the size of battery BAT being carried out to discharge operation and discharging current; Protective circuit 23 carries out normal discharge and recharge operation for the protection of battery charge-discharge circuit.
The input of charging paths 21 is connected with the positive pole BUS+ of power supply; the output of charging paths 21 is respectively with the input of discharge paths 22 and protect the input of branch road 23 to be connected, and the output of discharge paths 22 is connected with the protection output of branch road 23 and the negative pole BUS-of power supply respectively.
Wherein charging paths 21 comprises charge switch pipe SW3; the input of the input of charge switch pipe SW3 and the positive pole BUS+(of power supply and charging paths 21) be connected, the output of charge switch pipe SW3 is connected with the input (i.e. the output of charging paths 21) of discharge paths 22 with the protection input of branch road 23 respectively.
Wherein discharge paths 22 comprises discharge switch pipe SW4 and discharge-preventing reversal connection short circuit diode D3, discharge switch pipe SW4 and discharge-preventing reversal connection short circuit diode D3 is connected in discharge paths 22, the input of discharge switch pipe SW4 respectively with the output of charging paths 21 and protect the input of branch road 23 (i.e. the input of discharge paths 22) to be connected, the output of discharge switch pipe SW4 respectively with the output of the protection output of branch road 23 and the negative pole BUS-(of power supply and discharge paths 22) be connected; The anode of discharge-preventing reversal connection short circuit diode D3 is connected with the input of discharge paths 22, and the negative electrode of discharge-preventing reversal connection short circuit diode D3 is connected with the output of discharge paths 22.
Wherein protect branch road 23 to comprise and anti-downly fill switching tube SW5, this is anti-down fills switching tube SW5 and battery BAT in series is being protected in branch road, the anti-down input filling switching tube SW5 is connected with the output of charging paths 21 and the input (namely protecting the input of branch road 23) of discharge paths 22 respectively, namely the anti-down output filling switching tube SW5 protects the output of branch road 23 with the output of discharge paths 22 and the negative pole BUS-(of power supply respectively) be connected, the positive pole of battery BAT is connected with the input of protection branch road 23, the negative pole of battery BAT is connected with the output of protection branch road 23.
The battery charge-discharge circuit of this preferred embodiment also comprises sampling resistor R1, and this sampling resistor R1 is used for sampling to charging current or discharging current, and this sampling resistor R1 and the anti-down switching tube SW5 that fills is connected on and protects in branch road.
In Fig. 2, positive pole BUS+, the charge switch pipe SW3 of power supply, the anti-down negative pole BUS-filling switching tube SW5, sampling resistor R1, battery BAT and power supply form charge circuit.Positive pole, sampling resistor R1, the anti-down negative pole formation discharge loop filling switching tube SW5, anti-reverse short circuit diode D3, discharge switch pipe SW4 and battery BAT of battery BAT in Fig. 2.
When the battery charge-discharge circuit of this preferred embodiment is charged; positive pole BUS+, charge switch pipe SW3, the anti-down negative pole BUS-filling switching tube SW5, sampling resistor R1, battery BAT and power supply of power supply form charge circuit; in this charge circuit, energy consuming components is not set; ensure the control to power supply access by the charge switch pipe SW3 of charging paths 21 simultaneously; the anti-down of protection branch road 23 fills the protection of switching tube SW5 guarantee to battery BAT; therefore the charge efficiency of whole charging process is high; and there is no heat dissipation problem, the reliability of charging circuit is higher.
When the battery charge-discharge circuit of this preferred embodiment is discharged, the positive pole of battery BAT, sampling resistor R1, the anti-down negative pole formation discharge loop filling switching tube SW5, anti-reverse short circuit diode D3, discharge switch pipe SW4 and battery BAT.Operated by discharge switch pipe SW4 controlled discharge in this discharge loop, prevented the short circuit of the discharge loop caused during battery BAT reversal connection by anti-reverse short circuit diode D3 simultaneously, therefore whole discharge process is also efficient and safe, and anti-reverse short circuit diode D3 also can not arranged according to customer requirement here certainly.
Please refer to Fig. 3, Fig. 3 is the physical circuit figure that second of battery charge-discharge circuit of the present invention selects embodiment.On the basis of the first preferred embodiment, the discharge paths 32 of the battery charge-discharge circuit of this preferred embodiment also comprises electric discharge heat-sink unit D4, and this electric discharge heat-sink unit D4 and discharge switch pipe SW4 is connected in discharge paths 32.
In the preferred embodiment, electric discharge heat-sink unit D4 is an electric discharge heat radiation diode, and the anode of this electric discharge heat radiation diode is connected with the input of discharge paths 32, and the negative electrode of this electric discharge heat radiation diode is connected with the output of discharge paths 32.
This discharge paths 32 also comprises short switch pipe SW6, this short switch pipe SW6 and heat radiation diodes in parallel are in discharge paths 32, short switch pipe SW6 and discharge switch pipe SW4 is connected in discharge paths 32, the input of short switch pipe SW6 is connected with the input of discharge paths 32, and the output of short switch pipe SW6 is connected with the output of discharge paths 32.When the battery charge-discharge circuit of this preferred embodiment carries out discharge operation, heat radiation diode can by the heat of the discharge energy of battery BAT by self pressure drop balanced discharge switching tube SW4, whole discharge loop is dispelled the heat balanced, prevent single original paper from generating heat too high and reducing useful life.
In discharge process, the voltage of battery BAT may lower than the conducting voltage of heat-sink unit D4 and the conducting voltage sum of discharge-preventing reversal connection short circuit diode D3 of discharging, and at this moment discharge loop can not carry out regular picture.Short switch pipe SW6 will discharge heat-sink unit D4 short circuit in the preferred embodiment, and the pressure drop on such discharge loop reduces, and make battery BAT can proceed electric discharge, reach better discharge effect.Here short switch pipe SW6 may also be the combination of power transistor or power transistor.
Certainly this electric discharge heat-sink unit D4 also can be the loose thermal diode stacks of the heat radiation diode composition of multiple mutual series connection, the series connection (opposed polarity end is interconnected) mutually successively of the heat radiation diode in this loose thermal diode stacks, the anode of the first diode of this loose thermal diode stacks is connected with the anti-down input filling switching tube SW5 with the output of charge switch pipe SW3, and the negative electrode of last diode of loose thermal diode stacks is connected with the negative pole BUS-of power supply and the negative pole of battery BAT respectively.Loose like this thermal diode stacks can play the effect of the heat radiation in balanced discharge loop equally, and carries out certain control by the effect of quantity to heat radiation increasing or reduce heat radiation diode.
Please refer to Fig. 4, Fig. 4 is the physical circuit figure of the 3rd preferred embodiment of battery charge-discharge circuit of the present invention.The charging paths 41 of the battery charge-discharge circuit of this preferred embodiment comprises charge switch pipe SW3 and charging protective tube F1; discharge paths 42 comprises discharge switch pipe SW4, discharge-preventing reversal connection short circuit diode D3, electric discharge heat-sink unit D4, short switch pipe SW6 and electric discharge protective tube F2, and protection branch road comprises and anti-downly fills switching tube SW5 and sampling resistor R1.
Charge switch pipe SW3 is used for control inputs plant-grid connection battery charge-discharge circuit; Discharge switch pipe SW4 is used for controlling to carry out discharge operation to battery BAT; The anti-down switching tube SW5 that fills accesses battery charge-discharge circuit for controlling battery BAT; Discharge-preventing reversal connection short circuit diode D3 is for preventing the short circuit of the discharge loop caused during battery BAT reversal connection; Electric discharge heat-sink unit D4 is used for the heat radiation in balanced discharge loop; Short switch pipe SW6 is used for, by two terminal shortcircuits of electric discharge heat-sink unit D4, improving discharge capability; Charging protective tube F1 is for preventing the charging current of charge circuit excessive; Electric discharge protective tube F2 is for preventing the discharging current of discharge loop excessive; Sampling resistor R1 is for the discharging current of the charging current or discharge loop that detect charge circuit.
In the preferred embodiment, the positive pole BUS+ of the input and power supply that are specially charge switch pipe SW3 is connected, the output of charge switch pipe SW3 is connected with the anti-down input filling switching tube SW5, and the anti-down output filling switching tube SW5 is connected with the positive pole of battery BAT; The input of discharge switch pipe SW4 is connected with the output of charge switch pipe SW3 and the anti-down input filling switching tube SW5 respectively; The output of discharge switch pipe SW4 is connected with the negative pole BUS-of power supply and the negative pole of battery BAT respectively; The anode of discharge-preventing reversal connection short circuit diode D3 is connected with the anti-down input filling switching tube SW5 with the output of charge switch pipe SW3 respectively; The negative pole of discharge-preventing reversal connection short circuit diode D3 is connected with the negative pole BUS-of input power and the negative pole of battery BAT respectively; Discharge switch pipe SW4 and discharge-preventing reversal connection short circuit diode D3 is connected in discharge loop.
In the preferred embodiment, charge switch pipe SW3, discharge switch pipe SW4 and anti-downly fill the combination (namely multiple power transistor is connected mutually) that switching tube SW5 is power transistor (as insulating gate type field effect tube (MOS) or insulated gate polar form power tube (IGBT)) or the power transistor with parasitic diode.Wherein the negative electrode of the parasitic diode of charge switch pipe SW3 is connected with the input of charge switch pipe SW3, and the anode of the parasitic diode of charge switch pipe SW3 is connected with the output of charge switch pipe SW3; The negative electrode of the parasitic diode of discharge switch pipe SW4 is connected with the input of discharge switch pipe SW4, and the anode of the parasitic diode of discharge switch pipe SW4 is connected with the output of discharge switch pipe SW4; The anti-down negative electrode filling the parasitic diode of switching tube SW5 is connected with the anti-down output filling switching tube SW5, and the anti-down anode filling the parasitic diode of switching tube SW5 is connected with the anti-down input filling switching tube SW5.Make the anode of the parasitic diode of charge switch pipe SW3 be connected with the anti-down anode filling the parasitic diode of switching tube SW5 like this, avoid battery and carry out improper discharge and recharge by the parasitic diode of charge switch pipe SW3 and the anti-down parasitic diode filling switching tube SW5; Simultaneously the negative electrode of the parasitic diode of discharge switch pipe SW4 is connected with the anode of discharge-preventing reversal connection short circuit diode D3, avoids battery and carries out improper discharge and recharge by the parasitic diode of discharge switch pipe SW4 and discharge-preventing reversal connection short circuit diode D3.
Electric discharge heat-sink unit D4 in this preferred embodiment and short switch pipe SW6 is connected in parallel in discharge loop.The heat-sink unit that wherein discharges can be heat radiation diode, the anode of this heat radiation diode is connected with the anti-down input filling switching tube SW5 with the input of charge switch pipe SW3 respectively, the negative electrode of heat radiation diode is connected with the negative pole BUS-of power supply and the negative pole of battery BAT respectively, and namely this heat radiation Diode series is in discharge loop.When the battery charge-discharge circuit of this preferred embodiment carries out discharge operation, the discharge energy of battery BAT can be carried out loss by self pressure drop by heat radiation diode, whole discharge loop is dispelled the heat balanced, avoids the local overheating of discharge loop.
The battery charge-discharge circuit of this preferred embodiment also comprises charging protective tube F1 and electric discharge protective tube F2; charging protective tube F1 is connected in charging paths, automatically disconnects charging paths to protect the element in charging paths time excessive for the charging current in charging paths.Electric discharge protective tube F2 is connected in discharge paths, automatically disconnects discharge loop to protect the element in discharge paths time excessive for the discharging current in discharge paths.
The battery charge-discharge circuit of this preferred embodiment also comprises sampling resistor R1, and this sampling resistor R1 is connected in protection branch road simultaneously, for the discharging current of the charging current and discharge loop that detect charge circuit.Particularly, the positive pole of battery is connected by the input of this sampling resistor with protection branch road.Owing to sampling resistor to be arranged on the positive terminal of battery; the parallel connection of multiple battery charge-discharge circuit can be realized charge to a battery; and accurately can detect the charging current of each road charge circuit (as sampling resistor being arranged on the negative pole end of battery simultaneously; as in parallel in adopted multiple battery charge-discharge circuit; protective loop due to multiple battery charge-discharge circuit shares the negative pole BUS-of a power supply, and the magnitude of current of the charging current of the every road charge circuit detected may be caused inaccurate.
When the battery charge-discharge circuit of this preferred embodiment is charged, the positive pole BUS+ of power supply, charge switch pipe SW3, charging protective tube F1, anti-downly fill switching tube SW5, sampling resistor R1, the negative pole BUS-of battery BAT and power supply forms charge circuit, in this charge circuit, energy consuming components is not set, ensure the control to input power access by charge switch pipe SW3 simultaneously, by the anti-down control of filling switching tube SW5 and ensureing to access battery BAT, and by sampling resistor R1, charging current is detected, by charging protective tube F1, excessive charging current is controlled.Therefore the charge efficiency of whole charging process is high, and does not have heat dissipation problem, and the reliability of charging circuit is higher.
When the battery charge-discharge circuit of this preferred embodiment is discharged, when electric discharge starts, short switch pipe SW6 disconnects, battery BAT positive pole, sampling resistor R1, anti-down switching tube SW5, electric discharge protective tube F2, discharge-preventing reversal connection short circuit diode D3, electric discharge heat-sink unit D4, discharge switch pipe SW4 and the battery BAT negative pole of filling form discharge loop, now discharge-preventing reversal connection short circuit diode D3 and electric discharge heat-sink unit D4 can be balanced the heat of dispersion discharge loop, ensure that the security reliability of discharge loop.By sampling resistor R1, discharging current is detected simultaneously, by electric discharge protective tube F2, excessive discharging current is controlled.Arrive the later stage of electric discharge, short switch pipe SW6 closes, to discharge heat-sink unit D4 short circuit, battery BAT positive pole now, sampling resistor R1, anti-down switching tube SW5, electric discharge protective tube F2, discharge-preventing reversal connection short circuit diode D3, short switch pipe SW6, discharge switch pipe SW4 and the battery BAT negative pole of filling form discharge loop, which reduce the load on discharge loop, this discharge loop can be discharged more fully to battery BAT.
Therefore the battery charge-discharge circuit of this preferred embodiment is avoided using dissipative cell in charge circuit, improve the operating efficiency of whole battery charge-discharge circuit, in parallelly can use and discharge and recharge operation is carried out to high capacity cell, not easily heat dissipation problem occurs, therefore the safety and reliability of the charge circuit of whole battery charge-discharge circuit is better simultaneously.In discharge loop, namely the setting of short switch pipe and electric discharge heat-sink unit ensure that the abundant electric discharge of battery simultaneously, in turn ensure that discharge loop dispels the heat stable, strengthens the safety and reliability of the discharge loop of battery charge-discharge circuit.
In sum; although the present invention discloses as above with preferred embodiment; but above preferred embodiment is also not used to limit the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various change and retouching, the scope that therefore protection scope of the present invention defines with claim is as the criterion.
Claims (12)
1. a battery charge-discharge circuit, is characterized in that, comprising:
Power supply;
Charging paths, for controlling the size of battery being carried out to charging operations and charging current;
Discharge paths, for controlling the size of battery being carried out to discharge operation and discharging current; And
Protection branch road, carries out normal discharge and recharge operation for the protection of described battery charge-discharge circuit;
The input of described charging paths is connected with the positive pole of described power supply, the output of described charging paths is connected with the input of described discharge paths and the input of described protection branch road respectively, and the output of described discharge paths is connected with the output of described protection branch road and the negative pole of described power supply respectively;
Described discharge paths comprises discharge switch pipe and discharge-preventing reversal connection short circuit diode, described discharge switch pipe and described discharge-preventing reversal connection short circuit Diode series are in described discharge paths, the input of described discharge switch pipe is connected with the input of described discharge paths, and the output of described discharge switch pipe is connected with the output of described discharge paths; The anode of described discharge-preventing reversal connection short circuit diode is connected with the input of described discharge paths, and the negative electrode of described discharge-preventing reversal connection short circuit diode is connected with the output of described discharge paths;
Described discharge paths also comprises electric discharge heat-sink unit, and described electric discharge heat-sink unit and described discharge switch pipe are connected in described discharge paths;
Described electric discharge heat-sink unit is at least one electric discharge heat radiation diode; The anode of described electric discharge heat radiation diode is connected with the input of described discharge paths, and the negative electrode of described electric discharge heat radiation diode is connected with the output of described discharge paths;
Described discharge paths also comprises short switch pipe, described short switch pipe and described electric discharge heat-sink unit are connected in parallel in described discharge paths, described short switch pipe and described discharge switch pipe are connected in described discharge paths, the input of described short switch pipe is connected with the input of described discharge paths, and the output of described short switch pipe is connected with the output of described discharge paths.
2. battery charge-discharge circuit according to claim 1, it is characterized in that, described protection branch road comprises and anti-downly fills switching tube, described anti-down switching tube and the described serial battery of filling is in described protection branch road, the described anti-down input filling switching tube is connected with the input of described protection branch road, and the described anti-down output filling switching tube is connected with the output of described protection branch road; The positive pole of described battery is connected with the input of described protection branch road, and the negative pole of described battery is connected with the output of described protection branch road.
3. battery charge-discharge circuit according to claim 1, it is characterized in that, described charging paths comprises charge switch pipe, and the input of described charge switch pipe is connected with the input of described charging paths, and the output of described charge switch pipe is connected with the output of described charging paths.
4. battery charge-discharge circuit according to claim 3, is characterized in that,
Described charging paths also comprises charging protective tube, and described charging protective tube and described charge switch pipe are connected in described charging paths.
5. battery charge-discharge circuit according to claim 1, is characterized in that,
Described electric discharge heat-sink unit is the loose thermal diode stacks of the heat radiation diode composition of multiple mutual series connection, the anode of the first diode of described loose thermal diode stacks is connected with the input of described discharge paths, and the negative electrode of last diode of described loose thermal diode stacks is connected with the output of described discharge paths.
6. battery charge-discharge circuit according to claim 1, is characterized in that,
Described discharge paths also comprises electric discharge protective tube, and described electric discharge protective tube and described discharge switch pipe are connected in described discharge paths.
7. battery charge-discharge circuit according to claim 2, is characterized in that,
Described battery charge-discharge circuit also comprises:
Sampling resistor, for sampling to charging current or discharging current, described sampling resistor and the described anti-down switching tube that fills are connected in described protection branch road.
8. battery charge-discharge circuit according to claim 7, is characterized in that, the positive pole of described battery is connected by the input of described sampling resistor with described protection branch road.
9. battery charge-discharge circuit according to claim 2, is characterized in that, the described anti-down switching tube that fills is that at least one has the field-effect transistor of parasitic diode;
The described anti-down negative electrode filling the parasitic diode of switching tube is connected with the described anti-down output filling switching tube, and the described anti-down anode filling the parasitic diode of switching tube is connected with the described anti-down input filling switching tube.
10. battery charge-discharge circuit according to claim 3, is characterized in that, described charge switch pipe is that at least one has the field-effect transistor of parasitic diode;
The negative electrode of the parasitic diode of described charge switch pipe is connected with the input of described charge switch pipe, and the anode of the parasitic diode of described charge switch pipe is connected with the output of described charge switch pipe.
11. battery charge-discharge circuit according to claim 1, is characterized in that, described discharge switch pipe is that at least one has the field-effect transistor of parasitic diode;
The negative electrode of the parasitic diode of described discharge switch pipe is connected with the input of described discharge switch pipe, and the anode of the parasitic diode of described discharge switch pipe is connected with the output of described discharge switch pipe.
12. battery charge-discharge circuit according to claim 1, is characterized in that, comprising:
Described protection branch road comprises and anti-downly fills switching tube, described anti-down switching tube and the described serial battery of filling is in described protection branch road, the described anti-down input filling switching tube is connected with the input of described protection branch road, and the described anti-down output filling switching tube is connected with the output of described protection branch road; The positive pole of described battery is connected with the input of described protection branch road, and the negative pole of described battery is connected with the output of described protection branch road;
Described charging paths comprises charge switch pipe, and the input of described charge switch pipe is connected with the input of described charging paths, and the output of described charge switch pipe is connected with the output of described charging paths;
Described discharge paths comprises discharge switch pipe and discharge-preventing reversal connection short circuit diode, described discharge switch pipe and described discharge-preventing reversal connection short circuit Diode series are in described discharge paths, the input of described discharge switch pipe is connected with the input of described discharge paths, and the output of described discharge switch pipe is connected with the output of described discharge paths; The anode of described discharge-preventing reversal connection short circuit diode is connected with the input of described discharge paths, and the negative electrode of described discharge-preventing reversal connection short circuit diode is connected with the output of described discharge paths;
Described charge switch pipe, described discharge switch pipe and the described anti-down switching tube that fills are the field-effect transistor that at least one has parasitic diode;
The negative electrode of the parasitic diode of described charge switch pipe is connected with the input of described charge switch pipe, and the anode of the parasitic diode of described charge switch pipe is connected with the output of described charge switch pipe;
The negative electrode of the parasitic diode of described discharge switch pipe is connected with the input of described discharge switch pipe, and the anode of the parasitic diode of described discharge switch pipe is connected with the output of described discharge switch pipe;
The described anti-down negative electrode filling the parasitic diode of switching tube is connected with the described anti-down output filling switching tube, and the described anti-down anode filling the parasitic diode of switching tube is connected with the described anti-down input filling switching tube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310192070.7A CN103269099B (en) | 2013-05-22 | 2013-05-22 | Battery charge-discharge circuit |
| PCT/CN2013/076875 WO2014186990A1 (en) | 2013-05-22 | 2013-06-06 | Battery charging and discharging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310192070.7A CN103269099B (en) | 2013-05-22 | 2013-05-22 | Battery charge-discharge circuit |
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| Publication Number | Publication Date |
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| CN103269099A CN103269099A (en) | 2013-08-28 |
| CN103269099B true CN103269099B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310192070.7A Active CN103269099B (en) | 2013-05-22 | 2013-05-22 | Battery charge-discharge circuit |
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| Country | Link |
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| CN (1) | CN103269099B (en) |
| WO (1) | WO2014186990A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104935021A (en) * | 2014-03-19 | 2015-09-23 | 安徽动力源科技有限公司 | Battery charging and discharging circuit |
| JP7060435B2 (en) * | 2018-04-19 | 2022-04-26 | Fdk株式会社 | Charger with failure detection function and failure detection method |
| CN109787323A (en) * | 2019-03-12 | 2019-05-21 | 北京长城华冠汽车科技股份有限公司 | The charge-discharge system and vehicle of vehicle |
| CN113872281B (en) * | 2021-09-24 | 2024-07-09 | 广东邦普循环科技有限公司 | Battery management system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532988A (en) * | 2003-03-26 | 2004-09-29 | ������������ʽ���� | Battery group with charging control function |
| CN101079542A (en) * | 2006-05-24 | 2007-11-28 | 三星Sdi株式会社 | Battery pack |
| CN102751763A (en) * | 2012-07-16 | 2012-10-24 | 深圳市安能能源技术有限公司 | Battery charge-discharge device and battery charge-discharge system |
| CN202535116U (en) * | 2012-04-27 | 2012-11-14 | 广东易事特电源股份有限公司 | Solar energy charging circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3468220B2 (en) * | 2000-12-26 | 2003-11-17 | 株式会社リコー | Charge / discharge protection circuit, battery pack incorporating the charge / discharge protection circuit, and electronic device using the battery pack |
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2013
- 2013-05-22 CN CN201310192070.7A patent/CN103269099B/en active Active
- 2013-06-06 WO PCT/CN2013/076875 patent/WO2014186990A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532988A (en) * | 2003-03-26 | 2004-09-29 | ������������ʽ���� | Battery group with charging control function |
| CN101079542A (en) * | 2006-05-24 | 2007-11-28 | 三星Sdi株式会社 | Battery pack |
| CN202535116U (en) * | 2012-04-27 | 2012-11-14 | 广东易事特电源股份有限公司 | Solar energy charging circuit |
| CN102751763A (en) * | 2012-07-16 | 2012-10-24 | 深圳市安能能源技术有限公司 | Battery charge-discharge device and battery charge-discharge system |
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|---|---|
| WO2014186990A1 (en) | 2014-11-27 |
| CN103269099A (en) | 2013-08-28 |
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