CN201623508U - Vehicle-mounted power battery charger with CAN communication function - Google Patents
Vehicle-mounted power battery charger with CAN communication function Download PDFInfo
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- CN201623508U CN201623508U CN2009202860030U CN200920286003U CN201623508U CN 201623508 U CN201623508 U CN 201623508U CN 2009202860030 U CN2009202860030 U CN 2009202860030U CN 200920286003 U CN200920286003 U CN 200920286003U CN 201623508 U CN201623508 U CN 201623508U
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Abstract
The utility model provides a vehicle-mounted power battery charger with a CAN communication function, and particularly relates to a vehicle-mounted power battery charger applicable to hybrid powered automobiles or pure electric-driving automobiles, capable of judging the working parameter of a battery and outputting a control signal for controlling the charging of the battery, and transferring the working parameter of the battery to a peripheral device or modifying the parameter of the behivle-mounted power battery charger through the peripheral device. The vehicle-mounted power battery comprises a measuring input loop, a programmed control unit and a CAN communication control loop, wherein the measuring inout loop is connected with the programmed control unit and is used for receiving a working signal from the battery; the programmed control unit is connected with the measuring input loop and the CAN communication control loop and is used for judging the current battery working parameter of the battery and outputting the control signal; the CAN communication control loop is connected with the programmed control unit through a controller local network bus; and the control programs control unit interacts with the signal of the peripheral device. The vehicle-mounted power battery charger can realize the control of the high-power power battery, and monitor the battery at any moment during the charging process, so as to protect the battery.
Description
Technical field
The utility model relates generally to charging control technology field, relates in particular to a kind of vehicle mounted dynamic battery charger with the CAN communication function on hybrid power or the pure electric drive automobile.
Background technology
The current the most serious problem of generally using of fuel engines automobile is exactly a contaminated environment, and along with the enhancing of environmental consciousness, various hybrid powers or pure electric drive automobile are shown one's talent, and are popularized abroad.
Advantages such as hybrid power or pure electric drive automobile are little with its pollution, energy-conserving and environment-protective become the new developing direction of automobile industry.Hybrid vehicle, especially pure electric drive automobile is to be power with the vehicle power, travel with power wheel, itself is the pernicious gas of exhaust emission atmosphere not, and can make full use of power charge more than needed during low power consumption in night, generating equipment day and night can both be made full use of, improved its economic benefit greatly.
But the most electrokinetic cells that adopt of hybrid power or pure electric drive automobile are as energy resource system, this electrokinetic cell is different from general low-power battery, in charging process, electric current can be up to tens amperes, about about 300 volts, general charger can not satisfy the requirement of this high power battery to voltage greatly; Charger must satisfy vehicle-mounted use, and existing charger all is subjected to certain restriction at aspects such as weight, volume, fail safes, can not satisfy vehicle-mounted requirement as an important component part of power vehicle; And the costing an arm and a leg of electrokinetic cell; in charging process, must there be special vehicle mounted dynamic battery charger that charging process is protected; electric weight is controlled; otherwise may exist in the charging process overcharge or temperature too high; just might damage the performance of battery; at present also there is not special vehicle mounted dynamic battery charger to control, and existing charger can not satisfy the demand of quick charge.
The utility model content
The purpose of this utility model is to provide a kind of vehicle mounted dynamic battery charger with the CAN communication function, in battery charge controller, dispose CAN (Controller Area Network, controller area network) CAN Communication Control loop makes whole battery charge controller have CAN communication function, battery status self-checking function and charging process Automatic Optimal controlled function.
The utility model solves above-mentioned technical problem by such technical scheme:
The utility model provides a kind of vehicle mounted dynamic battery charger with the CAN communication function, the vehicle mounted dynamic battery charger comprises a charge controller, be used to judge that the running parameter of battery and output are used to control the control signal of battery charge, and can transmit the running parameter of battery or the parameter of vehicle mounted dynamic battery charger is made amendment; Described charge controller comprises at least measures input circuit, procedure control unit, CAN Communication Control loop;
Measure input circuit and link to each other, receive working signal, and described working signal is sent to procedure control unit from battery with procedure control unit;
Procedure control unit is connected with measurement input circuit and CAN Communication Control loop respectively, preserve the preset standard working signal in the procedure control unit, it also comprises analog-to-digital conversion module, analog-to-digital conversion module is connected with the measurement input circuit, the working signal that is used for receiving is converted to digital signal corresponding, and by relatively judging the running parameter that battery is current, and output control signal corresponding with the preset standard working signal;
CAN Communication Control loop is connected with procedure control unit by controller area network bus CANBUS, is used for the control program control unit and transmits the running parameter of battery or the parameter of vehicle mounted dynamic battery charger is made amendment.
As further improvement, described vehicle mounted dynamic battery charger also comprises a D/A converter module that is connected with procedure control unit, is used for the control signal of procedure control unit output is converted to analog control signal.
As further improvement, described working signal comprises charging voltage signal, charging current signal, reaches the battery temperature signal.
As further improvement, described vehicle mounted dynamic battery charger also comprises a button that is connected with the measurement input circuit, and control vehicle mounted dynamic battery charger starts or quits work, and switching signal is sent to the measurement input circuit as working signal.
As further improvement, comprise Hall element in the described measurement input circuit, to sampling from the existing isolation signals of the operating voltage of battery.
As further improvement, CAN Communication Control loop also comprises high speed photo coupling, can carry out photoelectricity to the signal by the controller area network bus transmission and isolate.
As further improvement, described vehicle mounted dynamic battery charger also comprises output control module and positioning indicator, and after output control module received the analog control signal of D/A converter module output, the driving condition indicating device was to show the running parameter of charger.
Compared with prior art, the advantage that the utlity model has is:
1, this vehicle mounted dynamic battery charger is supporting simple, and has effectively improved the performance of charging control, can control powerful power-supply system;
2, can before charging and in the charging, check, monitor current charged state at any time, shorten the charging interval, protect electrokinetic cell admirably battery;
3, disposed the CAN communication module that comprises photoelectric isolation module, make it have the CAN communication function, with low cost and real-time communication good, in addition, also has the battery self-checking function, judge the running parameter of battery, and send the optimal charge control signal, to carry out charging process Automatic Optimal controlled function according to current battery operated parameter.
Description of drawings
Fig. 1 is the structural representation of power-supply management system.
Fig. 2 is the structural representation of a kind of vehicle mounted dynamic battery charger with the CAN communication function of the utility model.
Fig. 3 is the structural representation of the measurement input circuit of a kind of vehicle mounted dynamic battery charger with the CAN communication function of the utility model.
Fig. 4 is the structural representation of the utility model switch power controller.
Fig. 5 is the circuit diagram in the soft switch of the utility model loop.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See also Fig. 1, the utility model provides a kind of charge controller 1 with the CAN communication function, is used to control battery 4 charging, every running parameter of monitoring battery 4, and it is for reference that the running parameter of battery 4 is sent to vehicle-carrying display screen.
Described power-supply management system comprises a charger and a battery that is connected with charger 4 at least, and charger comprises charge controller 1, switch power controller 2 and the soft switch loop 3 of series connection successively.Charge controller 1 is mainly used in the running parameter that the working signal of gathering charger output is judged battery 4, and compares analysis according to default standard value, the work of output control signal control switching controller; Charge controller 1 can also be sent on the vehicle-carrying display screen battery 4 present running parameters for reference simultaneously.The working signal output pulse control signal that switch power controller is used for comparison control signal and gathers from battery 4 is to realize the control to soft switch loop.
One, vehicle mounted dynamic battery charger
Charge controller 1 comprises button 11, positioning indicator 12, measurement input circuit 13, procedure control unit 14, CAN Communication Control loop 15, D/A converter module 16, reaches output control module 17.The vehicle mounted dynamic battery charger also comprises an electric power loop (not shown), and it adopts switch multi-channel output direct stream power supply, for the vehicle mounted dynamic battery charger provides voltage-stabilizing working power supply.
Button 11 is convenient to the user and is controlled charger and start or stop work, is used for the transmit button signal.
Measure the working signal that input circuit 13 is used to gather switching signal and charger output, and described working signal is sent to procedure control unit 14.Described working signal comprises charging voltage signal, charging current signal, battery 4 temperature signals and switching signal battery temperature signal.
See also Fig. 2, measure input circuit 13 and comprise current-limiting resistance 31, Hall element 32 and operational amplifier 33.Hall element 32 links to each other with current-limiting resistance 31 and operational amplifier 33 respectively.
Arrive in the Hall element 32 after the charging voltage signal of charger output, charging current signal and battery 4 temperature signals process current-limiting resistance 31 current limlitings, the charging voltage of battery temperature signal and charger and charging current, the sampling of realization isolation signals, and charging voltage and the charging current signal that collects sent to operational amplifier 33,33 pairs of working signals that collect of operational amplifier carry out power amplification, and are converted to procedure control unit 14 receivable standard signals.
As a kind of improvement, the Hall element of using in the utility model 32 adopts the Hall voltage transducer LV25 and the Hall current sensor LA25 of LEM company to gather charging voltage and electric current respectively.
The working signal that the procedure control unit 14 interior chargers that can preserve user preset are exported and the standard value of switching signal also can be by the external keyboard input with the change standard values.Procedure control unit comprises an analog-to-digital conversion module that is connected with measurement input circuit 13, be used to receive from the working signal of switching signal or charger output and with above-mentioned working signal and be converted to digital signal corresponding, procedure control unit by with comparison, analysis and the logical operation of preset standard value, with the running parameter of judging that battery 4 is current, below specify respectively:
A. ought receive switching signal, then procedure control unit 14 sends corresponding switch controlling signal.
B. ought receive charging voltage signal or charging current signal, procedure control unit 14 can and compare and analyze with indoor charging voltage of establishing and charging current these signals, obtains the voltage or the current controling signal of a battery 4 chargings; Perhaps battery 4 current charged states judged in the record that changes by a period of time charging voltage and electric current, provides correspondent voltage or current controling signal.
C. ought receive battery 4 temperature signals, procedure control unit 14 can compare with default temperature signal, and whether battery temperature signal temperature is normal, sends the control signal that is used to protect charger.
D. in addition, procedure control unit 14 also can go out the external control signals such as time, battery 4 serviceabilities of battery 4 charging rates, battery 4 needs charging according to receiving different calculated signals, and sends to vehicle-carrying display screen.
CAN Communication Control loop 15 is connected with procedure control unit 14 by CAN (Controller Area Network, controller area network) bus.When procedure control unit 14 sends external control signal to vehicle-carrying display screen or peripheral other equipment, perhaps, when procedure control unit 14 receives the signal of external keyboard or the transmission of other equipment, for example the user by the output of keyboard input charger working signal and during the standard value of switching signal, all can transmit via CAN Communication Control loop 15.CAN Communication Control loop 15 also comprises high speed photo coupling, can carry out photoelectricity to signal and isolate, and avoids avoiding in the signals transmission electrical Interference.
D/A converter module 16 links to each other with procedure control unit 14 by high speed SPI interface, receive the control signal that procedure control unit 14 sends, and being converted into analog control signal, analog control signal can be sent to output control module 17, also can be sent to the PWM controller simultaneously.
After output control module 17 received the analog control signal of D/A converter module 16 outputs, driving condition indicating device 12 was to show the running parameter of charger.
Press the button 11, charge controller 1 is started working, and measures input circuit 13 and gathers switching signal, charging voltage signal, charging current signal and battery 4 temperature signals.Procedure control unit 14 is changed, analyzes also after reading switching signal output switch control signal is lighted by the indicator light on the output control module 17 driving condition indicating devices 12 to output control module 17.
After charging voltage signal, current signal and battery 4 temperature signals of charger output are isolated sampling by the current-limiting resistance 3 battery temperature signal Hall elements 32 of measuring input circuit 13 to these signals, after operational amplifier 33 processing and amplifying, be converted to the procedure control unit 14 receivable working signals of 0-5V.14 pairs of working signals that receive of procedure control unit are changed, comparison and analysis provide control signal corresponding and export switch power controller 2 to via D/A converter module 16, calculate battery 4 charging rates, the time that needs charging, the external control signals such as serviceability of battery 4 simultaneously, and output to outside vehicle-carrying display screen or other vehicle-mounted ancillary equipment by CAN Communication Control loop 6.
Two, switch power controller and soft switch loop
See also Fig. 4, described switch power controller 2 comprise the PWM controller and with the driving buffer circuit of PWM control connection.The PWM controller is connected with charge controller 1, it comprises operational amplifier and feedback circuit at least, operational amplifier comprises two inputs, normal phase input end connects the analog control signal from 6 outputs of the digital to analog converter in the charge controller 1, and negative-phase input connects charging voltage signal or the charging current signal from charger output.Be provided with between the digital to analog converter 6 of the normal phase input end of operational amplifier and charge controller 1 and set loop resistance R1, be provided with between the negative-phase input of operational amplifier and the charger output and detect loop resistance R2.Feedback circuit is arranged between the output and negative-phase input of operational amplifier, comprises feedback resistance R3, R4 and feedback capacity C1, and the circuit that feedback resistance R3 and C1 are composed in series is in parallel with feedback resistance R4.
The positive of PWM controller and the analog control signal of negative-phase input and charging voltage signal or charging current signal compare, calculate voltage deviation, adopt the proportional integral FEEDBACK CONTROL to obtain pulse control signal by feedback circuit, realize the feedback closed loop control of the curtage of charging process, and pulse control signal is sent to soft switch loop 3.
Further, first timing circuit that the PWM controller also is provided with frequency setting capacitor C 5, frequency setting resistance R 5, is made up of capacitor C 6 and resistance R 6, second timing circuit of forming by capacitor C 7 and resistance R 7.
The pulse control signal of PWM controller output acquires the pulse control signal of fixed frequency by frequency setting capacitor C 5 and frequency setting resistance R 5, and obtain the delay time of leading-bridge according to first timing circuit, obtain the delay time of lagging leg according to second timing circuit.
The PWM controller sends to soft switch loop 3 with pulse control signal that obtains and the delay time that calculates by driving buffer circuit.Drive buffer circuit and be used for control voltage and high pressure between PWM controller and the field effect transistor are kept apart, to guarantee the safety of device.
See also Fig. 5, comprise four field effect transistor in the soft switch loop 3, each field effect transistor electric capacity in parallel and diode.Be leading-bridge field effect transistor T1 parallel diode D1 and capacitor C 1; Leading-bridge field effect transistor T3 parallel diode D3 and capacitor C 3, lagging leg field effect transistor T2 parallel diode D2 and capacitor C 2, lagging leg field effect transistor T4 parallel diode D4 and capacitor C 4.In addition, also comprise main transformer T, saturable reactor LK, be used for the diode D5 and the D6 of rectification, and be used for filter inductance Lf and capacitor C f.
Pulse control signal is input in the soft switch loop 33, by leading-bridge field effect transistor T1 and T3, lagging leg field effect transistor T2 and T4 obtain high-frequency ac current, constitute the loop through blocking capacitor Cb, main transformer T, saturable reactor LK, thereby the place, former limit at main transformer T produces controlled alternating current, and the electric current at the secondary place of main transformer T is through rectifier diode D5, D6, inductance L f, obtain the dc charging power supply of needs after the rectification of capacitor C f and the filtering, as the charge power supply of battery 4.
Output voltage is regulated by the field effect transistor that changes on leading-bridge and the lagging leg diagonal in soft switch loop 3, delay time according to leading-bridge that receives from switching power circuit 2 and lagging leg is led over phase place of lagging leg by leading-bridge, its essence is exactly to allow a certain brachium pontis be raised to supply voltage fast to discharging and recharging of shunt capacitance in utilizing resonant process or drop to null value, and make that same brachium pontis is about to open and connect diode current flow, and to make the terminal voltage of this pipe be 0.When the field effect pipe was opened, capacitance voltage in parallel was 0, because the electric current of major loop can not suddenly change, cause being connected in parallel on the diode current flow on the field effect transistor, causing this field effect transistor both end voltage when opening is 0, has realized the no-voltage conducting, i.e. zero voltage switch control; When the field effect pipe turn-offs, because the electric capacity both end voltage can not be suddenlyd change, be that no-voltage is turn-offed so turn-off, effectively overcome the too high shortcoming of field effect transistor temperature, reduce loss and interference.
The utility model adopts the DC-DC full-bridge converters of the soft switching pulse width modulated of phase shifting control in major loop, can realize the zero voltage switch of full-bridge converters, use the high-power FET of Switching Power Supply specialty chip controls full-bridge conversion, control major loop effectively by charging control circuit and realize soft switch motion, realize the FEEDBACK CONTROL of charging voltage or Current Control, make charging reach optimum efficiency.
The utility model uses the PIC18 series monolithic to be master controller in charge controller 1, and configuration photoelectric isolation module and CAN communication module 62 make it have the CAN communication function, battery 4 state self-checking functions, charging process Automatic Optimal controlled function.Can before charging or in the charging, check battery 4, provide the optimal charge controlling value according to current battery 4 states, can realize several different charging methods such as Current Control, voltage control or power control, can also realize that perseverance is filled according to operating position, floating charge, tiny stream fill, all fill etc.At any time electrokinetic cell 4 is monitored in charging process, prevented from that electrokinetic cell 4 battery 4 temperature in charging process are too high or exist to overcharge, not only shortened the charging interval, and it is simple in structure, reliable operation has been simplified the supporting of system and has been improved performance.
The above only is a better embodiment of the present utility model; protection range of the present utility model does not exceed with above-mentioned execution mode; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (7)
1. vehicle mounted dynamic battery charger with the CAN communication function, it is characterized in that: the vehicle mounted dynamic battery charger comprises a charge controller, be used to judge that the running parameter of battery and output are used to control the control signal of battery charge, and can transmit the running parameter of battery or the parameter of vehicle mounted dynamic battery charger is made amendment; Described charge controller comprises at least measures input circuit, procedure control unit, CAN Communication Control loop;
Measure input circuit and link to each other, receive working signal, and described working signal is sent to procedure control unit from battery with procedure control unit;
Procedure control unit is connected with measurement input circuit and CAN Communication Control loop respectively, preserve the preset standard working signal in the procedure control unit, it also comprises analog-to-digital conversion module, analog-to-digital conversion module is connected with the measurement input circuit, the working signal that is used for receiving is converted to digital signal corresponding, and by relatively judging the running parameter that battery is current, and output control signal corresponding with the preset standard working signal;
CAN Communication Control loop is connected with procedure control unit by controller area network bus CANBUS, is used for the control program control unit and transmits the running parameter of battery or the parameter of vehicle mounted dynamic battery charger is made amendment.
2. vehicle mounted dynamic battery charger according to claim 1, it is characterized in that: described vehicle mounted dynamic battery charger also comprises a D/A converter module that is connected with procedure control unit, is used for the control signal of procedure control unit output is converted to analog control signal.
3. vehicle mounted dynamic battery charger according to claim 1 is characterized in that: described working signal comprises charging voltage signal, charging current signal, reaches the battery temperature signal.
4. according to claim 1 or 3 described vehicle mounted dynamic battery chargers, it is characterized in that: described vehicle mounted dynamic battery charger also comprises a button that is connected with the measurement input circuit, control vehicle mounted dynamic battery charger starts or quits work, and the transmission switching signal is sent to the measurement input circuit as working signal.
5. vehicle mounted dynamic battery charger according to claim 4 is characterized in that: comprise Hall element in the described measurement input circuit, to sampling from the existing isolation signals of the operating voltage of battery.
6. vehicle mounted dynamic battery charger according to claim 1 is characterized in that: CAN Communication Control loop also comprises high speed photo coupling, can carry out photoelectricity to the signal by the controller area network bus transmission and isolate.
7. vehicle mounted dynamic battery charger according to claim 1, it is characterized in that: described vehicle mounted dynamic battery charger also comprises output control module and positioning indicator, after output control module receives the analog control signal of D/A converter module output, the driving condition indicating device is to show the running parameter of charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202860030U CN201623508U (en) | 2009-12-22 | 2009-12-22 | Vehicle-mounted power battery charger with CAN communication function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202860030U CN201623508U (en) | 2009-12-22 | 2009-12-22 | Vehicle-mounted power battery charger with CAN communication function |
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| Publication Number | Publication Date |
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| CN201623508U true CN201623508U (en) | 2010-11-03 |
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| CN2009202860030U Expired - Fee Related CN201623508U (en) | 2009-12-22 | 2009-12-22 | Vehicle-mounted power battery charger with CAN communication function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167001A (en) * | 2011-04-18 | 2011-08-31 | 北京理工华创电动车技术有限公司 | Controller for electric vehicle |
| CN102621493A (en) * | 2011-12-29 | 2012-08-01 | 武汉函谷科技有限公司 | Method and device for double-precision SOC (state of charge) test of electric vehicle power battery |
| CN103490488A (en) * | 2013-09-29 | 2014-01-01 | 华南理工大学 | Electric automobile vehicle-mounted charge management system and achieving method thereof |
| CN113223385A (en) * | 2021-04-25 | 2021-08-06 | 深圳职业技术学院 | Charging principle demonstration system based on new energy automobile charging process |
-
2009
- 2009-12-22 CN CN2009202860030U patent/CN201623508U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167001A (en) * | 2011-04-18 | 2011-08-31 | 北京理工华创电动车技术有限公司 | Controller for electric vehicle |
| CN102167001B (en) * | 2011-04-18 | 2012-09-26 | 北京理工华创电动车技术有限公司 | Controller for electric vehicle |
| CN102621493A (en) * | 2011-12-29 | 2012-08-01 | 武汉函谷科技有限公司 | Method and device for double-precision SOC (state of charge) test of electric vehicle power battery |
| CN103490488A (en) * | 2013-09-29 | 2014-01-01 | 华南理工大学 | Electric automobile vehicle-mounted charge management system and achieving method thereof |
| CN103490488B (en) * | 2013-09-29 | 2016-05-04 | 华南理工大学 | The vehicle-mounted charging management system of electric automobile and its implementation |
| CN113223385A (en) * | 2021-04-25 | 2021-08-06 | 深圳职业技术学院 | Charging principle demonstration system based on new energy automobile charging process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20111222 |