CN203481903U - Charging device of large-power power battery pack - Google Patents
Charging device of large-power power battery pack Download PDFInfo
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- CN203481903U CN203481903U CN201320619271.6U CN201320619271U CN203481903U CN 203481903 U CN203481903 U CN 203481903U CN 201320619271 U CN201320619271 U CN 201320619271U CN 203481903 U CN203481903 U CN 203481903U
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Abstract
The utility model discloses a charging device of a large-power power battery pack comprising a three-phase transformer, a three-phase silicon controlled rectifier phase shift voltage-regulating rectification circuit, an IGBT negative pulse discharging circuit, a three-phase charging controller, and a battery pack management system. A primary coil of the three-phase transformer is connected with a three-phase power supply by a contactor, and a second coil is connected with the rectification circuit. A secondary circuit and voltage sampling circuit is disposed between the rectification circuit and the battery pack. The IGBT negative pulse discharging circuit is parallely connected between an anode and a cathode of the battery pack. The battery pack management system is used for acquiring the voltage signal and the temperature signal of each of the batteries of the battery pack. The three-phase charging controller can be used to control the continuous charging or the combination charging of the intermittent pulse charging and the negative pulse discharging of the contactor, the rectification circuit, and the IGBT negative pulse discharging circuit on the battery pack according to the circuit signals and the voltage signals acquired by the secondary current and voltage sampling circuit and the voltage signal and the temperature signal of each of the batteries. The charging device has advantages of large output power, quick charging, and ability of prolonging the service lifetime of batteries.
Description
Technical field
The utility model relates to the charging device of power battery pack, especially a kind of charging device of high-power power battery group.
Background technology
According to the Chinese Academy of Sciences, research and analyse, last year haze weather events, hydro carbons organic particulate matter accounting from fuel-engined vehicle exhaust emissions reaches 18%, and administering haze has become national strategy and whole society's hot issue, and motor vehicle exhaust emission has become one of urban pollutant main reason.And take the electric automobile that electrokinetic cell is new forms of energy, opened up the uncharted field of zero discharge, electrokinetic cell is as the core energy of electric automobile, the flying power of electrokinetic cell, charging rate and battery, fill manyly, fill soon, life-span is long, has become the important technology index that can electric automobile fast-developing, this wherein charging device play critical effect.Mainly there is two large problems in existing charging device:
1) power output is less, and charging rate is slow, cannot meet the quick charge requirement of electric automobile 2C or 4C, particularly long-distance big bus, and battery pack power surpasses 1000Ah, is difficult to realize in way power up fast.What current charging device on the market mainly adopted is that single-phase transformer rectification output is charged to electrokinetic cell.Be a single phase industrial frequence, its basic principle is: pulsating direct current → be added to battery pack is exported → be rectified into single-phase transformer.There is serious uneven electricity consumption in this charging device, power factor fluctuation is large in charging process, can have a strong impact on the stability of partial electric grid electricity consumption, and the power output of unit charging device is generally lower than 60kW; Another kind is single-phase high frequency, and its basic principle is: three-phase input rectifying becomes direct current → be reverse into interchange → single-phase high frequency transformer → be rectified into pulsating direct current → be added to battery pack by IGBT.Though this charging device has solved electrical network three-phase equilibrium input, owing to still adopting single-phase high frequency transformer, under high-frequency work state, power output is also very restricted, is generally less than 30kW, and has high frequency radiation and electromagnetic compatibility problem in various degree.
2) charging current science not, has affected useful life of electrokinetic cell.Theory and practice proof battery set charge/discharge is a complicated electrochemical process, in general charging current is in time exponential law decline in charging process, can not be automatically by constant current or constant voltage charge, and the factor of impact charging is a lot of in charging process, the gassing voltage of battery, temperature, pole plate active matter etc. all can make charging produce very big-difference.Power battery pack long-term work is under recurrent state, and charging device of low quality will inevitably shorten the life-span of battery greatly, and numerous battery experts say: " battery is not damaged, but fills bad ".
Utility model content
The technical problems to be solved in the utility model is to provide a kind of charging device of high-power power battery group, can three-phase alternating current balance input, and DC output power is large, and charging rate is fast, and can extend the useful life of electrokinetic cell.
For achieving the above object, the technical solution of the utility model is: a kind of charging device of high-power power battery group, comprise three-phase transformer, three-phase controllable silicon phase-shift voltage regulating rectification circuit, IGBT negative pulse discharge circuit, also comprise three-phase charge controller, batteries management system;
The primary coil of three-phase transformer is connected with three phase mains by contactor, the secondary coil of three-phase transformer connects three-phase controllable silicon phase-shift voltage regulating rectification circuit input end, the positive pole of described rectification circuit output end connects the positive pole of a single-phase conducting diode, the negative pole of described diode connects a current sampling resistor front end, current sampling resistor rear end is connected with the positive pole of battery pack, and the negative pole of described rectification circuit output end connects the negative pole of battery pack;
IGBT negative pulse discharge circuit is connected in parallel between the both positive and negative polarity of battery pack;
The positive pole of battery pack also connects first resistance one end, and the negative pole of battery pack also connects voltage sample resistance one end, and the first resistance and voltage sample resistance are in series;
The voltage signal of the current signal of current sampling resistor and voltage sample resistance flows to three-phase charge controller;
Described batteries management system is gathered voltage and the temperature of each battery in battery pack and the voltage of each battery and temperature signal is transferred to three-phase charge controller by RS485 or CAN communication interface by temperature sensor and voltage collection circuit;
Described three-phase charge controller connects three phase mains and according to the current signal of current sampling resistor and the voltage signal of voltage sample resistance and the voltage of each battery and temperature signal control contactor, three-phase controllable silicon phase-shift voltage regulating rectification circuit and IGBT negative pulse discharge circuit, battery pack is carried out to trickle charge or intermittently impulse charging and negative pulse discharge combined charging.
Preferred described three-phase controllable silicon phase-shift voltage regulating rectification circuit comprises six controllable silicons, the first silicon controlled positive pole is connected with the 4th silicon controlled negative pole and the first end secondary with three-phase transformer is connected, the first silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the 4th silicon controlled; The 3rd silicon controlled positive pole is connected with the 6th silicon controlled negative pole and second end secondary with three-phase transformer is connected, and the 3rd silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the 6th silicon controlled; The 5th silicon controlled positive pole is connected with the second silicon controlled negative pole and three end secondary with three-phase transformer is connected, and the 5th silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the second silicon controlled; The first controllable silicon, the second controllable silicon, the 3rd controllable silicon, the 4th controllable silicon, the 5th controllable silicon, the 6th silicon controlled control end are connected with the output of three-phase charge controller respectively.
Preferred described IGBT negative pulse discharge circuit comprises IGBT switching tube, the second resistance and the 3rd resistance, the emitter of IGBT switching tube connects the second resistance, the second resistance connects the negative pole of battery pack again, the collector electrode of IGBT switching tube connects the 3rd resistance, the 3rd resistance connects the positive pole of battery pack again, and the control utmost point of IGBT switching tube connects output of described three-phase charge controller.
Further improve, described the 3rd resistance is variable resistor.To facilitate the adjustment velocity of discharge.
Further improve, described the first resistance consists of three resistance serial connections.Expand the first resistance selection scope, to reduce production costs.
Further improve, the leading-in end of described three phase mains is provided with circuit breaker.The convenient control to input power.
Further improve, also comprise touch-screen, described touch-screen connects three-phase charge controller by RS485 communication interface.Three-phase charge controller, by touch-screen human-computer interaction interface, according to the rated capacity of battery pack, can independently be set battery pack rated voltage; Can independently set charging interval, charge capacity; Autonomous set fast punching, in fill, trickle charge mode.Interactive interface and the modes selecting of hommization are provided, have solved the charging demand that a charging device meets multiple power battery pack, overcome the man-to-man technical bottleneck of charging device and power battery pack.
The utility model has the following advantages than traditional charging device:
1, adopting three-phase transformer and three-phase controllable silicon phase-shift voltage regulating rectification circuit to match charges, guarantee balance and the stability of partial electric grid electricity consumption, can obtain larger power output, the utility model maximum charging current can reach 600A, and peak power output can reach 400kW;
2, between three-phase controllable silicon phase-shift voltage regulating rectification circuit and battery pack, be provided with secondary current sample circuit and secondary voltage sample circuit, three-phase charge controller is provided with CAN/RS485 serial communication interface simultaneously, can obtain by batteries management system voltage, the temperature information of each piece cell; Then according to secondary current and voltage sampling signal, three-phase charge controller automatic dynamic is followed the tracks of the receptible maximum charging current of battery pack, has improved charging rate;
3, the temperature information that communication is obtained according to batteries management system, three-phase charge controller converses that battery pack two ends are current automatically can receptible maximum gassing voltage, and by controllable silicon phase-shift voltage regulating, set maximum output voltage, guarantee not produce overvoltage charging;
4, according to batteries management system, obtain the both end voltage of cell, can accurately judge the variable condition of cell impedance, when a certain battery impedance raises or when both end voltage surpasses in advance set point or temperature and surpasses set point, controller converts intermittently impulse charging and negative pulse discharge combined charging pattern automatically to, in time battery being carried out to oppositely large electric current sparks, can remove the gas on battery positive plate, and oxygen is absorbed on negative plate, thereby solved the polarization problem of battery in quick charge process, this process can also reduce the pressure of inside battery, temperature, impedance, reduce the loss of energy, make electric energy more effectively be converted into chemical energy and store, improved the charge acceptance of charge efficiency and battery, thereby greatly improve charging rate, shorten the charging interval,
5, when quick charge amount reaches 98%, controller can also convert trickle floating charge automatically to, until charging current is reduced to and approaches zero-sum and be full of completely.
Therefore, the utility model power output is large, and charging rate is fast, and can extend the useful life of electrokinetic cell.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and concrete execution mode, the utility model is described in further detail.
Shown in Fig. 1, a kind of charging device of high-power power battery group, comprise three-phase transformer 1, three-phase controllable silicon phase-shift voltage regulating rectification circuit 2, IGBT negative pulse discharge circuit 3, three-phase charge controller 4, touch-screen 5, batteries management system 6, described touch-screen 5 connects three-phase charge controller 4 by RS485 communication interface;
The primary coil of three-phase transformer 1 is connected with three phase mains by contactor 7, described three-phase controllable silicon phase-shift voltage regulating rectification circuit 2 comprises six controllable silicons, the positive pole of the first controllable silicon V1 is connected with the negative pole of the 4th controllable silicon V4 and is connected with the first end of 1 level of three-phase transformer, the negative pole of the first controllable silicon V1 connects the positive pole of a single-phase conducting diode D1, and the positive pole of the 4th controllable silicon V4 connects battery pack 8 negative poles; The positive pole of the 3rd controllable silicon V3 is connected with the negative pole of the 6th controllable silicon V6 and is connected with the second end of 1 level of three-phase transformer, and the negative pole of the 3rd controllable silicon V3 connects the positive pole of described diode D1, and the positive pole of the 6th controllable silicon V6 connects battery pack 8 negative poles; The positive pole of the 5th controllable silicon V5 is connected with the negative pole of the second controllable silicon V2 and is connected with the 3rd end of 1 level of three-phase transformer, and the negative pole of the 5th controllable silicon V5 connects the positive pole of described diode D1, and the positive pole of the second controllable silicon V2 connects battery pack 8 negative poles; The control end of the first controllable silicon V1, the second controllable silicon V2, the 3rd controllable silicon V3, the 4th controllable silicon V4, the 5th controllable silicon V5, the 6th controllable silicon V6 is connected with the output of three-phase charge controller 4 respectively;
The negative pole of described diode D1 connects a current sampling resistor Rs1 front end, and current sampling resistor Rs1 rear end is connected with the positive pole of battery pack 8;
The positive pole of battery pack 8 also connects first resistance 9 one end, and the negative pole of battery pack 8 also connects voltage sample resistance R 4 one end, and the first resistance 9 is in series with voltage sample resistance R 4, and described the first resistance 9 consists of three resistance R 1, R2, R3 serial connection;
IGBT negative pulse discharge circuit 3 is connected in parallel between the both positive and negative polarity of battery pack 8; Described IGBT negative pulse discharge circuit 3 comprises IGBT switching tube 31, the second resistance R 5 and the 3rd resistance R s2, the emitter of IGBT switching tube 31 connects the second resistance R 5, the second resistance R 5 connects the negative pole of battery pack 8 again, the collector electrode of IGBT switching tube 31 connects the 3rd resistance R s2, the 3rd resistance R s2 connects the positive pole of battery pack 8 again, and the control utmost point of IGBT switching tube 31 connects 4 one outputs of three-phase charge controller;
Described the 3rd resistance R s2 can select variable resistor;
The voltage signal of the current signal of current sampling resistor Rs1 and voltage sample resistance R 4 flows to three-phase charge controller 4;
Described batteries management system 6 is gathered voltage and the temperature of each battery in battery pack 8 and the voltage of each battery and temperature signal is transferred to three-phase charge controller 4 by RS485 or CAN communication interface by temperature sensor and voltage collection circuit;
Described three-phase charge controller 4 connects three phase mains and carries out trickle charge or intermittently impulse charging and negative pulse discharge combined charging according to the current signal of current sampling resistor Rs1 and the voltage signal of voltage sample resistance R 4 and the voltage of each battery and temperature signal control contactor 7, three-phase controllable silicon phase-shift voltage regulating rectification circuit 2 and 3 pairs of battery pack of IGBT negative pulse discharge circuit 8;
Leading-in end at three phase mains is also provided with circuit breaker 10.
Described three-phase charge controller 4 can select industrial computer or Industrial PC Computer etc. can carry out the microsystem of calculating and control program.
The present embodiment can be realized following design parameter:
1) exchange input: input ac voltage: three-phase 380VAC/50HZ, input line electric current: 175A, input apparent power: 115kVA;
2) direct current output: output rated voltage: 468VDC, output rated current: 206ADC, output rated power: 100kW, fluctuation waveform output frequency 300HZ;
3) negative pulse discharge: discharge pulse current: 500ADC, pulsewidth: 2mS(is adjustable); Load battery pack is comprised of 120 (monomer 3.3V/570A) or by the battery pack of 2*120 parallel connection, charging device once charges, long-distance big bus can continue a journey 350kM or 700kM.
Below be only preferred embodiment of the utility model, the change that those skilled in the art does to be equal to by claim all falls into the protection range of this case.
Claims (7)
1. a charging device for high-power power battery group, comprises three-phase transformer, three-phase controllable silicon phase-shift voltage regulating rectification circuit, IGBT negative pulse discharge circuit, it is characterized in that: also comprise three-phase charge controller, batteries management system;
The primary coil of three-phase transformer is connected with three phase mains by contactor, the secondary coil of three-phase transformer connects three-phase controllable silicon phase-shift voltage regulating rectification circuit input end, the positive pole of described rectification circuit output end connects the positive pole of a single-phase conducting diode, the negative pole of described diode connects a current sampling resistor front end, current sampling resistor rear end is connected with the positive pole of battery pack, and the negative pole of described rectification circuit output end connects the negative pole of battery pack;
IGBT negative pulse discharge circuit is connected in parallel between the both positive and negative polarity of battery pack;
The positive pole of battery pack also connects first resistance one end, and the negative pole of battery pack also connects voltage sample resistance one end, and the first resistance and voltage sample resistance are in series;
The voltage signal of the current signal of current sampling resistor and voltage sample resistance flows to three-phase charge controller;
Described batteries management system is gathered voltage and the temperature of each battery in battery pack and the voltage of each battery and temperature signal is transferred to three-phase charge controller by RS485 or CAN communication interface by temperature sensor and voltage collection circuit;
Described three-phase charge controller connects three phase mains and according to the current signal of current sampling resistor and the voltage signal of voltage sample resistance and the voltage of each battery and temperature signal control contactor, three-phase controllable silicon phase-shift voltage regulating rectification circuit and IGBT negative pulse discharge circuit, battery pack is carried out to trickle charge or intermittently impulse charging and negative pulse discharge combined charging.
2. the charging device of a kind of high-power power battery group according to claim 1, it is characterized in that: described three-phase controllable silicon phase-shift voltage regulating rectification circuit comprises six controllable silicons, the first silicon controlled positive pole is connected with the 4th silicon controlled negative pole and the first end secondary with three-phase transformer is connected, the first silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the 4th silicon controlled; The 3rd silicon controlled positive pole is connected with the 6th silicon controlled negative pole and second end secondary with three-phase transformer is connected, and the 3rd silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the 6th silicon controlled; The 5th silicon controlled positive pole is connected with the second silicon controlled negative pole and three end secondary with three-phase transformer is connected, and the 5th silicon controlled negative pole connects the positive pole of described diode, the anodal battery pack negative pole that connects of the second silicon controlled; The first controllable silicon, the second controllable silicon, the 3rd controllable silicon, the 4th controllable silicon, the 5th controllable silicon, the 6th silicon controlled control end are connected with the output of three-phase charge controller respectively.
3. the charging device of a kind of high-power power battery group according to claim 1, it is characterized in that: described IGBT negative pulse discharge circuit comprises IGBT switching tube, the second resistance and the 3rd resistance, the emitter of IGBT switching tube connects the second resistance, the second resistance connects the negative pole of battery pack again, the collector electrode of IGBT switching tube connects the 3rd resistance, the 3rd resistance connects the positive pole of battery pack again, and the control utmost point of IGBT switching tube connects output of described three-phase charge controller.
4. the charging device of a kind of high-power power battery group according to claim 3, is characterized in that: described the 3rd resistance is variable resistor.
5. the charging device of a kind of high-power power battery group according to claim 1, is characterized in that: described the first resistance consists of three resistance serial connections.
6. the charging device of a kind of high-power power battery group according to claim 1, is characterized in that: the leading-in end of described three phase mains is provided with circuit breaker.
7. according to the charging device of a kind of high-power power battery group described in claim 1 to 6 any one, it is characterized in that: also comprise touch-screen, described touch-screen connects three-phase charge controller by RS485 communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619271.6U CN203481903U (en) | 2013-10-09 | 2013-10-09 | Charging device of large-power power battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619271.6U CN203481903U (en) | 2013-10-09 | 2013-10-09 | Charging device of large-power power battery pack |
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| CN203481903U true CN203481903U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320619271.6U Withdrawn - After Issue CN203481903U (en) | 2013-10-09 | 2013-10-09 | Charging device of large-power power battery pack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475078A (en) * | 2013-10-09 | 2013-12-25 | 厦门绿洋电气有限公司 | Charging device for high-power power battery pack |
| CN103904746A (en) * | 2014-04-04 | 2014-07-02 | 西北工业大学 | Intelligent quick charger of positive and negative pulse power battery and charging method thereof |
-
2013
- 2013-10-09 CN CN201320619271.6U patent/CN203481903U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475078A (en) * | 2013-10-09 | 2013-12-25 | 厦门绿洋电气有限公司 | Charging device for high-power power battery pack |
| CN103475078B (en) * | 2013-10-09 | 2016-08-17 | 厦门绿洋电气有限公司 | A kind of charging device of high-power power battery group |
| CN103904746A (en) * | 2014-04-04 | 2014-07-02 | 西北工业大学 | Intelligent quick charger of positive and negative pulse power battery and charging method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160817 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |