CN103441540A - Vehicle-mounted storage battery set charger circuit based on chopped waves - Google Patents
Vehicle-mounted storage battery set charger circuit based on chopped waves Download PDFInfo
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- CN103441540A CN103441540A CN2013103484702A CN201310348470A CN103441540A CN 103441540 A CN103441540 A CN 103441540A CN 2013103484702 A CN2013103484702 A CN 2013103484702A CN 201310348470 A CN201310348470 A CN 201310348470A CN 103441540 A CN103441540 A CN 103441540A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 101100257194 Homo sapiens SMIM8 gene Proteins 0.000 description 1
- 102100024789 Small integral membrane protein 8 Human genes 0.000 description 1
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Abstract
The invention relates to a vehicle-mounted storage battery set charger circuit based on chopped waves. The vehicle-mounted storage battery set charger circuit based on the chopped waves at least comprises an input voltage detecting unit (1), a pre-charging circuit unit (2), a first LC filter circuit (3), a PWM pulse driving unit (4), a current sensor (5) and an output voltage detection unit (6). The vehicle-mounted storage battery set charger circuit based on the chopped waves is mainly used for charging a vehicle-mounted storage battery set of an electric motor coach or a double-source trolley bus. According to the vehicle-mounted storage battery set charger circuit based on the chopped waves, a semiconductor device IGBT module serves as the core of a main circuit, and an embedded intelligent analogue integrated circuit is adopted for real-time control; the anti-jamming capability is strong, charging is achieved with a constant-current and voltage-limiting method, the maximum voltage is limited by the floating charge voltage, and a storage battery is prevented from being overcharged; the vehicle-mounted storage battery set charger circuit based on the chopped waves has a CAN bus communication function and can achieve real-time monitoring of charging and discharging of the storage battery.
Description
Technical field
The invention belongs to the circuit diagram of charger, particularly a kind of vehicle-mounted power storage battery group charger circuit based on copped wave.
Background technology
In prior art, DC chopped-wave, for fixing DC voltage conversion is become to variable direct voltage, converts also referred to as DC/DC.The thought that chopper cuts direct current is: if change the operating frequency of switch, or change the time scale that direct current switches on and off, just can fast and effeciently change voltage, the current average be added in load.
And, aspect battery charger, the main charger occurred all exists following shortcoming in the market: the charging interval is long, be subject to noise jamming, voltage fluctuation is larger, can't in real time voltage be detected, and has more problem.
Summary of the invention
The purpose of this invention is to provide a kind of power supply buses strong for disturbing, that scope range of the fluctuation of voltage is large designs, is easy to dismounting, can discharges and recharges Real-Time Monitoring to storage battery, can guarantees that battery voltage does not overcharge, possesses CAN bus communication function, the vehicle-mounted power storage battery group charger circuit based on copped wave.
The object of the present invention is achieved like this, a kind of vehicle-mounted power storage battery group charger circuit based on copped wave, at least comprise: the input voltage detecting unit, the precharging circuit unit, the one LC filter circuit, the pwm pulse driver element, current sensor and output voltage detecting unit, the Input voltage terminal two ends are electrically connected to the input voltage detecting unit, Input voltage terminal is by being electrically connected to a LC filter circuit behind the precharging circuit unit, the one LC filter circuit output serial connection pwm pulse copped wave unit, pwm pulse copped wave unit carries out pulse-width modulation to input voltage, pwm pulse copped wave unit output connects current sensor and output voltage detecting unit, input voltage detecting unit, precharging circuit unit, pwm pulse driver element, current sensor and output voltage detecting unit are electrically connected to processor interface respectively, the input voltage detecting unit is used for input voltage is detected, and under-voltage input is protected, the precharging circuit unit is for suppressing the impulse current of input voltage, the pwm pulse driver element can, when suppressing noise, be realized the control to input voltage and size of current, the effect of pwm pulse driver element is pulse-width modulation, by current sensor, observes and control output current, the output voltage detecting unit is for detecting control to the voltage after a series of conversion.At pwm pulse driver element output, the 2nd LC filter circuit is arranged.
Described input voltage detecting unit, by seven resistance R 1 ~ R7 and diode D1, D2 forms, resistance R 1 one termination input voltage negative poles, the resistance R other end is connected on the negative pole node that diode D1, D2 connect out; Resistance R 2 and R3, R4 and R5, R6 and R7 are in parallel respectively, and three groups of parallel resistance groups are connected in series in the positive pole of diode D1, and are connected in diode D3 in the precharging circuit unit and the diode D4 of input serial connection at the other end.
Described precharging circuit unit comprises: after diode D3 and resistance R 8 series connection, with controllable silicon, D5 is in parallel; The positive pole of diode D4 is connected in input anode, and negative pole is connected with the cathode node of diode D3, controllable silicon D5 parallel connection.
A described LC filter circuit at least comprises iron inductance L1 and shunt capacitance group, and iron inductance L1 mono-end is connected in the element output node in parallel of precharging circuit unit, and the other end is connected in shunt capacitance group and pwm pulse driver element; Electrochemical capacitor C1, C2 in the shunt capacitance group and C3 parallel connection, C4, C5 and C6 parallel connection, two groups of electrochemical capacitors in parallel are together in series, and while and capacitor C 8 and C7 form three shunt circuits, and the other end of shunt capacitance group is connected on the negative pole of input.
Described current sensor, its input is connected with the pwm pulse driver output, output is connected with iron-core coil L2, the diode D7 of the 2nd LC filter circuit, simultaneously, between the connected node and voltage negative pole of iron-core coil L2 and diode D7, parallel join two branch roads, one is the series arm of electrochemical capacitor C9 and C10, another is output voltage detecting unit branch road.
Advantage of the present invention is: be mainly used in the charging of the vehicle-mounted power electric bottle groups such as electric motor coach, double source trolley bus, it is core that main circuit be take semiconductor device IGBT module, adopts the embedded intelligence analog integrated circuit to control in real time; Antijamming capability is strong, in the constant current voltage limiting mode, charges, and ceiling voltage is limited with float charge voltage, guarantees that battery voltage does not overcharge; Possess the CAN bus communication function, and can realize that storage battery discharges and recharges Real-Time Monitoring.
The accompanying drawing explanation
Fig. 1 embodiment of the present invention circuit theory diagrams.
In figure: 1, input voltage detecting unit, 2, the precharging circuit unit, the 3, the one LC filter circuit; 4, pwm pulse copped wave unit; 5, current sensor, 6, the output voltage detecting unit, the 7, the 2nd LC filter circuit; 8, shunt capacitance group; 9, processor; 10, output voltage terminal; 11, Input voltage terminal.
Embodiment
As shown in Figure 1, a kind of vehicle-mounted power storage battery group charger circuit based on copped wave, at least comprise: input voltage detecting unit 1, precharging circuit unit 2, the one LC filter circuit 3, PWM(Pulse Width Modulation) pulse driver unit 4, current sensor 5 and output voltage detecting unit 6, Input voltage terminal 11 two ends are electrically connected to input voltage detecting unit 1, Input voltage terminal 11 is by the rear electrical connection in precharging circuit unit 2 the one LC filter circuit 3, the one LC filter circuit 3 output serial connection pwm pulse copped wave unit 4, 4 pairs of pwm pulse copped wave unit input voltage carries out pulse-width modulation, pwm pulse copped wave unit 4 outputs connect current sensor 5 and output voltage detecting unit 6, input voltage detecting unit 1, precharging circuit unit 2, PWM(Pulse Width Modulation) pulse driver unit 4, current sensor 5 and output voltage detecting unit 6 be electrically connected to processor 9 interfaces respectively, input voltage detecting unit 1 is for input voltage is detected, and under-voltage input is protected, precharging circuit unit 2 is for suppressing the impulse current of input voltage, PWM(Pulse Width Modulation) pulse driver unit 4 can, when suppressing noise, realize the control to input voltage and size of current, the effect of pwm pulse driver element 4 is pulse-width modulations, by current sensor 5, observes and control output current, output voltage detecting unit 6 detects control for the voltage to after a series of conversion.At PWM(Pulse Width Modulation) pulse driver unit 4 outputs have the 2nd LC filter circuit 7.
Described input voltage detecting unit 1, by seven resistance R 1 ~ R7 and diode D1, D2 forms, resistance R 1 one termination input voltage negative poles, the resistance R other end is connected on the negative pole node that diode D1, D2 connect out; Resistance R 2 and R3, R4 and R5, R6 and R7 are in parallel respectively, and three groups of parallel resistance groups are connected in series in the positive pole of diode D1, and are connected in diode D3 in precharging circuit unit 2 and the diode D4 of input serial connection at the other end.
Described precharging circuit unit 2 comprises: after diode D3 and resistance R 8 series connection, with controllable silicon, D5 is in parallel; The positive pole of diode D4 is connected in input anode, and negative pole is connected with the cathode node of diode D3, controllable silicon D5 parallel connection.
A described LC filter circuit 3 at least comprises iron inductance L1 and shunt capacitance group 8, and iron inductance L1 mono-end is connected in the element output node in parallel of precharging circuit unit 2, and the other end is connected in shunt capacitance group 8 and pwm pulse driver element; Electrochemical capacitor C1, C2 in shunt capacitance group 8 and C3 parallel connection, C4, C5 and C6 parallel connection, two groups of electrochemical capacitors in parallel are together in series, and while and capacitor C 8 and C7 form three shunt circuits, and the other end of shunt capacitance group 8 is connected on the negative pole of input.
Described current sensor 5, its input is connected with the pwm pulse driver output, output is connected with iron-core coil L2, the diode D7 of the 2nd LC filter circuit 7, the other end of diode D7 connects output voltage terminal 10, simultaneously, between the connected node and voltage negative pole of iron-core coil L2 and diode D7, parallel join two branch roads, article one, be the series arm of electrochemical capacitor C9 and C10, another is output voltage detecting unit 6 branch roads.
Described output voltage detecting unit 6, by eight resistance R 9 ~ R16 and diode D9, D10, capacitor C 11, C12 form, resistance R 16 1 termination input voltage negative poles wherein, the other end is connected on the negative pole node that D9, D10 connect out; Capacitor C 11 is in parallel with resistance R 16; Resistance R 9 and R12, R10 and R13, R11 and R14 are in parallel respectively, and three groups of parallel resistance groups are connected in series in the positive pole of diode D10, and are connected on the node between iron inductance L2 and diode D7 at the other end; 15 series connection of capacitor C 12 and resistance R, institute becomes series circuit in parallel with the circuit of three groups of parallel resistances formation.
The specified input voltage of described voltage input end is DC600V ± 20%; Rated output voltage DC510V; Maximum output current 30A; Low-tension supply input DC18 ~ 28V.
Described output voltage detecting unit 6, detect output voltage, when output voltage is less than 480V, after time delay 10S, starts shooting; Under charged state, when charging current is less than 1A, after time delay 30S, shut down.
The present invention arranges the CAN bus interface, according to CAN bus protocol transmission charging voltage, charging current data.
When input voltage is greater than 350V, when low voltage control voltage is greater than 20V, charger is started working.
The present invention has instantaneous output overvoltage, overcurrent protection.When charging current is greater than 35A, start timing time delay shutdown in 10 seconds, be greater than 40A and shut down at once; When cell voltage shuts down after 10 seconds higher than the 520V time delay; Lower than 490V, start shooting again; The charger output voltage is time delay shutdown in 2 seconds during higher than 530V; Shut down at once during higher than 750V when input voltage, again start shooting lower than 720V; When any one the overvoltage protection action of input voltage, output voltage and cell voltage is all shut down.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (5)
1. the vehicle-mounted power storage battery group charger circuit based on copped wave, at least comprise: input voltage detecting unit (1), precharging circuit unit (2), the one LC filter circuit (3), pwm pulse driver element (4), current sensor (5) and output voltage detecting unit (6), Input voltage terminal (11) two ends are electrically connected to input voltage detecting unit (1), Input voltage terminal (11) is by being electrically connected to a LC filter circuit (3) behind precharging circuit unit (2), the one LC filter circuit (3) output serial connection pwm pulse copped wave unit (4), pwm pulse copped wave unit (4) carries out pulse-width modulation to input voltage, pwm pulse copped wave unit (4) output connects current sensor (5) and output voltage detecting unit (6), input voltage detecting unit (1), precharging circuit unit (2), pwm pulse driver element (4), current sensor (5) and output voltage detecting unit (6) are electrically connected to processor (9) interface respectively, input voltage detecting unit (1) is for input voltage is detected, and under-voltage input is protected, precharging circuit unit (2) is for suppressing the impulse current of input voltage, pwm pulse driver element (4) can, when suppressing noise, be realized the control to input voltage and size of current, the effect of pwm pulse driver element (4) is pulse-width modulation, by current sensor (5), observes and control output current, output voltage detecting unit (6) detects control for the voltage to after a series of conversion, at pwm pulse driver element (4) output, the 2nd LC filter circuit (7) is arranged.
2. a kind of vehicle-mounted power storage battery group charger circuit based on copped wave according to claim 1, it is characterized in that: described input voltage detecting unit (1), by seven resistance R 1 ~ R7 and diode D1, D2 forms, resistance R 1 one termination input voltage negative poles, the resistance R other end is connected on the negative pole node that diode D1, D2 connect out; Resistance R 2 and R3, R4 and R5, R6 and R7 are in parallel respectively, and three groups of parallel resistance groups are connected in series in the positive pole of diode D1, and are connected in diode D3 in precharging circuit unit (2) and the diode D4 of input serial connection at the other end.
3. a kind of vehicle-mounted power storage battery group charger circuit based on copped wave according to claim 1, it is characterized in that: described precharging circuit unit (2) comprising: after diode D3 and resistance R 8 series connection, with controllable silicon, D5 is in parallel; The positive pole of diode D4 is connected in input anode, and negative pole is connected with the cathode node of diode D3, controllable silicon D5 parallel connection.
4. a kind of vehicle-mounted power storage battery group charger circuit based on copped wave according to claim 1, it is characterized in that: a described LC filter circuit (3) at least comprises iron inductance L1 and shunt capacitance group (8), iron inductance L1 mono-end is connected in the element output node in parallel of precharging circuit unit (2), and the other end is connected in shunt capacitance group (8) and pwm pulse driver element; Electrochemical capacitor C1, C2 in shunt capacitance group (8) and C3 parallel connection, C4, C5 and C6 parallel connection, two groups of electrochemical capacitors in parallel are together in series, and while and capacitor C 8 and C7 form three shunt circuits, and the other end of shunt capacitance group (8) is connected on the negative pole of input.
5. a kind of vehicle-mounted power storage battery group charger circuit based on copped wave according to claim 1, it is characterized in that: described current sensor (5), its input is connected with the pwm pulse driver output, output is connected with iron-core coil L2, the diode D7 of the 2nd LC filter circuit (7), simultaneously, between the connected node and voltage negative pole of iron-core coil L2 and diode D7, parallel join two branch roads, article one, be the series arm of electrochemical capacitor C9 and C10, another is output voltage detecting unit (6) branch road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310348470.2A CN103441540B (en) | 2013-08-12 | 2013-08-12 | A kind of onboard power storage battery group charger circuit based on copped wave |
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| CN201310348470.2A CN103441540B (en) | 2013-08-12 | 2013-08-12 | A kind of onboard power storage battery group charger circuit based on copped wave |
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| CN103441540B CN103441540B (en) | 2018-08-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406381A (en) * | 2019-09-02 | 2019-11-05 | 常州索维尔电子科技有限公司 | Power battery precharge switch device based on IGBT module |
| CN111497621A (en) * | 2020-04-30 | 2020-08-07 | 芜湖瑞来电子科技有限公司 | Trolley bus deconcentrator control circuit, control system and working method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07143676A (en) * | 1993-11-18 | 1995-06-02 | Toshiba Battery Co Ltd | Charge indicating circuit of secondary circuit |
| CN2364621Y (en) * | 1998-11-12 | 2000-02-16 | 高利民 | Chopper power supply for mine DC electric locomotive |
| CN201438642U (en) * | 2009-07-06 | 2010-04-14 | 北京纵横机电技术开发公司 | Novel passenger-car charger |
| CN201608559U (en) * | 2009-12-22 | 2010-10-13 | 廉廉机电科技发展(上海)有限公司 | Vehicle-mounted power battery charger having switch power supply function with soft switching technology |
| CN202084968U (en) * | 2011-06-20 | 2011-12-21 | 上海恒动汽车电池有限公司 | Precharge circuit of power battery |
| CN202094800U (en) * | 2011-04-01 | 2011-12-28 | 中兴通讯股份有限公司 | Soft loading circuit device of DC power supply |
| CN103204082A (en) * | 2012-01-13 | 2013-07-17 | 深圳市汇川技术股份有限公司 | Electric car direct current/direct current (DC/DC) controller |
| CN203416017U (en) * | 2013-08-12 | 2014-01-29 | 西安睿诺新能源有限公司 | Vehicular power battery group charger circuit based on chopped wave |
-
2013
- 2013-08-12 CN CN201310348470.2A patent/CN103441540B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07143676A (en) * | 1993-11-18 | 1995-06-02 | Toshiba Battery Co Ltd | Charge indicating circuit of secondary circuit |
| CN2364621Y (en) * | 1998-11-12 | 2000-02-16 | 高利民 | Chopper power supply for mine DC electric locomotive |
| CN201438642U (en) * | 2009-07-06 | 2010-04-14 | 北京纵横机电技术开发公司 | Novel passenger-car charger |
| CN201608559U (en) * | 2009-12-22 | 2010-10-13 | 廉廉机电科技发展(上海)有限公司 | Vehicle-mounted power battery charger having switch power supply function with soft switching technology |
| CN202094800U (en) * | 2011-04-01 | 2011-12-28 | 中兴通讯股份有限公司 | Soft loading circuit device of DC power supply |
| CN202084968U (en) * | 2011-06-20 | 2011-12-21 | 上海恒动汽车电池有限公司 | Precharge circuit of power battery |
| CN103204082A (en) * | 2012-01-13 | 2013-07-17 | 深圳市汇川技术股份有限公司 | Electric car direct current/direct current (DC/DC) controller |
| CN203416017U (en) * | 2013-08-12 | 2014-01-29 | 西安睿诺新能源有限公司 | Vehicular power battery group charger circuit based on chopped wave |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406381A (en) * | 2019-09-02 | 2019-11-05 | 常州索维尔电子科技有限公司 | Power battery precharge switch device based on IGBT module |
| CN111497621A (en) * | 2020-04-30 | 2020-08-07 | 芜湖瑞来电子科技有限公司 | Trolley bus deconcentrator control circuit, control system and working method thereof |
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| CN103441540B (en) | 2018-08-21 |
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Address after: Building B6, military civilian integration industrial park, 176 Biyuan 2nd Road, Zhangba street, hi tech Zone, Xi'an City, Shaanxi Province Patentee after: Xi'an Ruinuo Aviation Equipment Co.,Ltd. Address before: 710077 hi tech park, No. 72, Kam Yip Road, hi tech Zone, Shaanxi, Xi'an, C408 Patentee before: XI'AN RUINUO TO NOVEL ENERGY Co.,Ltd. |
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Denomination of invention: A charger circuit of vehicle power battery group based on chopper Effective date of registration: 20220627 Granted publication date: 20180821 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Ruinuo Aviation Equipment Co.,Ltd. Registration number: Y2022980008998 |
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Date of cancellation: 20230725 Granted publication date: 20180821 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Ruinuo Aviation Equipment Co.,Ltd. Registration number: Y2022980008998 |
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Denomination of invention: A Chopper Based Circuit for Car Power Battery Group Charger Effective date of registration: 20230810 Granted publication date: 20180821 Pledgee: Shaanxi SME financing Company limited by guarantee Pledgor: Xi'an Ruinuo Aviation Equipment Co.,Ltd. Registration number: Y2023980051815 |