CN102647006A - Charging device for lithium battery of pure electric vehicle - Google Patents
Charging device for lithium battery of pure electric vehicle Download PDFInfo
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- CN102647006A CN102647006A CN2012101167756A CN201210116775A CN102647006A CN 102647006 A CN102647006 A CN 102647006A CN 2012101167756 A CN2012101167756 A CN 2012101167756A CN 201210116775 A CN201210116775 A CN 201210116775A CN 102647006 A CN102647006 A CN 102647006A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 8
- 230000010349 pulsation Effects 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000004886 process control Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 16
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000011161 development Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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Abstract
The invention relates to a charging device for a lithium battery of a pure electric vehicle, which is designed by a modularized construction method and comprises two single units connected in parallel to each other based on a CAN master-slave mode, wherein the two single units are completely the same in structure, and keep consistent with each other in the change ratios of the output current and voltage; and an active power factor regulating unit and a resonance unit are arranged in the circuit of the single units. The charging device is suitable for charging the lithium batteries of various electric vehicles different in power; and based on the active power regulation technology, parallel-connection resonant soft switching technology, hardware current and voltage PID (Proportion Integration Differentiation) regulation technology and high-frequency inversion, rectification and filtering technology, wide input, high efficiency, high power factor and reliable performance of the charging device are realized; and therefore, the process of industrialization of the electric vehicles is positively promoted.
Description
Technical field
The invention belongs to the electric vehicle engineering field, relate to a kind of charging device of pure electric automobile lithium battery, utilize this device that the battery of pure electric automobile is charged, can realize lithium battery syllogic charge mode, improve battery life and charge efficiency.
Background technology
Along with Chinese economic development, the volume of production and marketing of automobile and recoverable amount are all keeping the stable developing state of high speed.Have the expert to point out, according to present development speed, the fuel oil production of China will face bigger pressure, and the pressure of energy supply and environment is becoming the restraining factors of automobile industry development.In the future of China's automobile industry, must walk the more energy-conservation road of cleaning of development.Electric automobile with cleaning, the reproducible energy is power, will become the important member in the automobile big family.
The power supply of pure electric automobile is a battery; Receive the restriction of battery capacity, volume and cost, once the continual mileage of charging is shorter, and along with driving cycle is different; Once the continual mileage of charging also can change, and therefore is equipped with the development trend that the vehicle-mounted charge machine is a pure electric automobile.
Because of the scope range of the fluctuation of voltage of series battery big; And the amount of batteries of power supply unit is different; Scope range of the fluctuation of voltage is different; Simultaneously in order to improve battery life and charge efficiency, require the vehicle-mounted charge machine to adjust output voltage and electric current in real time and can realize the no disturbance switching of constant voltage, constant current according to the voltage and current of battery.In view of vehicle-mounted special use occasion, require this charger must possess due design function and performance, and will satisfy specific (special) requirements aspects such as volume, efficient, weight, reliability, electromagnetic interference and anti-interference, hot property, noises.
Along with the pure electric automobile popularity rate is increasing, the charging electric motor vehicles machine is more and more serious to the influence of electrical network, to the vehicle-mounted charge machine require increasingly high.In conjunction with of the specific (special) requirements of modern pure electric automobile to vehicle-mounted charging device; Absorb the advantage of conventional electric-powered automobile with charger; Adopt multisection type charging modes, active power adjustment technology, parallel resonance soft switch technique and based on the unit parallel technology of CAN; Realize the vehicle-mounted charge machine that power is big, volume is little, efficient is high, power factor (PF) is high, can improve the reliability and the cost performance of system greatly.
Therefore; Research is under the certain situation of vehicle mounted dynamic battery; Based on active power adjustment technology, parallel resonance soft switch technique with based on the lithium battery charging device of the unit parallel technology of CAN, to operational efficiency that improves electric automobile and the obviously important meaning of applying that promotes electric automobile.
Summary of the invention
The present invention is in order to address the above problem, and designs a kind of based on active power adjustment, parallel resonance soft switch technique with based on the lithium battery charging device of the unit parallel technology of CAN to pure electric automobile.This device can be applicable to the various pure electric automobiles that are used for different model, different capacity; Can satisfy of the requirement of various lithium battery electrical automobiles through removable parts element and setting section parameter, and guarantee that this charger has high power factor, high efficiency and high reliability the vehicle-mounted charge machine.
The present invention realizes through following scheme:
Above-mentioned pure electric automobile lithium battery charging device adopts modular building method, comprises two units based on the parallel connection of CAN master slave mode; Two said unit structures are consistent, and the rate of change of output current and voltage is consistent.
Described pure electric automobile lithium battery charging device, wherein: said unit mainly is made up of the EMI module that electrically connects, input control switch, rectification unit, active power factor adjustment unit, high-frequency inversion unit, resonant element, high-frequency isolation unit, output filter unit, detection module and control and protected location; Said EMI module comprises input EMI unit, EMI processing unit and output EMI unit; Said input EMI unit suppresses the interference of input to charger; Said EMI processing unit and output EMI unit suppress the conducted interference of Circuit Fault on Secondary Transformer respectively; Said rectification module comprises uncontrollable rectification unit of power frequency and the uncontrollable rectification unit of output; The uncontrollable rectification unit of said power frequency becomes single-phase alternating current into the less direct current of pulsation; The uncontrollable rectification unit of said output utilizes the uncontrollable rectification circuit of single-phase bridge to realize high-frequency alternating current is transformed into the less direct current of pulsation; Said detection module comprises load signal detecting unit and electric current and voltage detecting unit; The voltage and current signal of said load signal detection battery is judged charger and battery status; The output voltage of the inductive current of said electric current and voltage detection active power factor adjustment unit, busbar voltage and the uncontrollable rectification unit of said power frequency.
Described pure electric automobile lithium battery charging device; Wherein: said active power factor adjustment unit adopts active PFC principle; Utilize the Boost converter, improve the busbar voltage of inverter bridge simultaneously in the power factor (PF) of regulating charger, and possess automatic constant-pressure and current-limiting function.
Described pure electric automobile lithium battery charging device, wherein: said input control switch is switch closure in the normal back of state-detection, cut-off switch during fault.
Described pure electric automobile lithium battery charging device, wherein: said resonant element is made up of electric capacity and inductance, realizes that switch tube zero voltage is open-minded, forms the parallel resonance soft switch technique.
Described pure electric automobile lithium battery charging device, wherein: said high-frequency inversion unit is realized constant DC voltage is transformed into high frequency square wave voltage through voltage source inverter.
Described pure electric automobile lithium battery charging device, wherein: the isolation of input voltage and output voltage is realized in said high-frequency isolation unit through high frequency transformer.
Described pure electric automobile lithium battery charging device, wherein: said output filter unit utilizes passive filter circuit to realize Rectified alternating current is transformed into constant DC.
Described pure electric automobile lithium battery charging device, wherein: said control and protected location are mainly realized generation, constant voltage, constant current, input overvoltage protection, input under-voltage protection, overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the output battery status measuring ability of pwm pulse.
Beneficial effect:
Pure electric automobile lithium battery charging device of the present invention adopts modular building method; The power supply of two platform independent is together in parallel based on the CAN master slave mode; Improve power output, the output current of every power supply and the rate of change of voltage are consistent when guaranteeing parallel connection, reach current-sharing effect preferably;
Adopt active PFC principle, utilize the Boost converter, make the power factor (PF) of AC side can reach more than 95%, the busbar voltage of inverter bridge is elevated to 380V simultaneously, and possesses automatic constant-pressure and current-limiting function;
Through in major loop, increasing the resonance link, utilize electric capacity and inductance to produce quasi-resonance, realize that the no-voltage of switching tube on the inverter bridge is open-minded, thereby reduce switching loss, improve the efficient of charger.
This charging device of the present invention is applicable to the lithium cell charging of the electric automobile of various different capacities; Owing to adopt based on active power adjustment technology, parallel resonance soft switch technique, hardware electric current and voltage PID regulation technology, high-frequency inversion, rectification and filtering technique; The input of charging machine width, high efficiency, high power factor have been realized; Dependable performance has been actively promoted the industrialization process of electric automobile.
Description of drawings
Fig. 1 is the parallel operation structured flowchart of pure electric automobile lithium battery charging device of the present invention.
Fig. 2 is the unit structured flowchart of pure electric automobile lithium battery charging device of the present invention.
Embodiment
As shown in Figure 1, pure electric automobile lithium battery charging device of the present invention adopts modular building method, comprises two units of parallel connection, and these two units are based on CAN master slave mode parallel connection, forms main unit A and from unit B; Main unit A is with consistent from the structure of unit B, and the rate of change of output current and voltage is consistent.
Because main unit A with consistent from the structure of unit B, is an example with main unit A below, specifies its concrete formation.
As shown in Figure 2, main unit A mainly is made up of the uncontrollable rectification unit of the uncontrollable rectification unit in the input EMI unit 1 that electrically connects, input control switch 2, power frequency 3, active power factor adjustment unit 4, high-frequency inversion unit 5, resonant element 6, high-frequency isolation unit 7, output 8, EMI processing unit 9, output filter unit 10, output EMI unit 11, load signal detecting unit 12, electric current and voltage detecting unit 13 and control and protected location 14.
Input EMI unit 1, EMI processing unit 9 and output EMI unit 11 constitute the EMI module; Wherein import EMI unit 1 and suppress the interference of input charger; EMI processing unit 9 and output EMI unit 11 suppress the conducted interference of Circuit Fault on Secondary Transformer respectively.
Input control switch 2 is switch closure in the normal back of state-detection, cut-off switch during fault.
The uncontrollable rectification unit 3 of power frequency constitutes rectification module with the uncontrollable rectification unit 8 of output; Wherein the uncontrollable rectification unit 3 of power frequency becomes single-phase alternating current into the less direct current of pulsation; Exporting uncontrollable rectification unit 8 utilizes the uncontrollable rectification circuit of single-phase bridge to realize high-frequency alternating current is transformed into the less direct current of pulsation.
Active power factor adjustment unit 4 improves the busbar voltage of inverter bridge simultaneously in the power factor (PF) of regulating charger; Adopt active PFC principle; Utilize the Boost converter; Make the power factor (PF) of AC side can reach more than 95%, the busbar voltage of inverter bridge is elevated to 380V simultaneously, and possesses automatic constant-pressure and current-limiting function.
High-frequency inversion unit 5 is realized constant DC voltage is transformed into high frequency square wave voltage through voltage source inverter.
Resonant element 6 is made up of electric capacity and inductance, realizes that switch tube zero voltage is open-minded, forms the parallel resonance soft switch technique; Through in major loop, increasing the resonance link, utilize electric capacity and inductance to produce quasi-resonance, realize that the no-voltage of switching tube on the inverter bridge is open-minded, thereby reduce switching loss, improve the efficient of charger.
The isolation of input voltage and output voltage is realized in high-frequency isolation unit 7 through high frequency transformer;
Output filter unit 9 utilizes passive filter circuit to realize Rectified alternating current is transformed into constant DC.
Load signal detecting unit 12 constitutes detection module with electric current and voltage detecting unit 13, and wherein load signal detecting unit 12 detects the voltage and current signal of battery, judges charger and battery status; Electric current and voltage detecting unit 13 detects the output voltage of the uncontrollable rectification unit 302 of inductive current, busbar voltage and power frequency of active power factor adjustment unit;
Control and protected location 14 main generation, constant voltage, constant current, input overvoltage protection, input under-voltage protection, overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the output battery status measuring abilities of realizing pwm pulse.
The course of work:
Electric automobile stops; After charger input control switch 2 closes; Control and protected location 14 get into self-diagnosable system; Load signal detecting unit 12 through detecting unit 9 and electric current and voltage detecting unit 13 detect supply power voltages whether normal, detect whether charger output battery connects, whether reversal connection of battery, export whether normally whether short circuit, output voltage detect with output current, whether the inverter bridge busbar voltage normal; If normally import control switch 2 close with, if there is one to break down then system does not start, and give the display message that is out of order with the light form.
After self-diagnosable system was confirmed normally, input relay closed, and got into normal mode of operation.Input voltage provides constant DC bus-bar voltage through the uncontrollable rectification unit in input EMI unit 1, power frequency 3, active power factor adjustment unit 4 for inverter bridge; High-frequency inversion unit 5, resonant element 6 and high-frequency isolation unit 7 are transformed into the alternating current of high frequency with constant DC, high-frequency alternating current is transformed into direct current gives lithium cell charging through exporting uncontrollable rectification unit 8, EMI processing unit 9, output filter unit 9 and output EMI unit 11.In the charging process, control and protected location 14 detect the state of battery in real time, according to charging output convert charging pattern, control charging flow.
In the course of the work; Control and protected location 14 are through load signal detecting unit 12 situation such as whether 13 detections have the output overvoltage of appearance, output overcurrent with the electric current and voltage detecting unit, charger is overheated, battery wire is loosening, input voltage is undesired of detecting unit 9, in case occur then entering protection mode of operation.In the protection mode of operation, when this type of fault occurring, control and protected location 14 get into error protection work of treatment flow process, and through after the time-delay of certain hour, if fault is got rid of, system recovers to get into normal mode of operation automatically.
Lithium battery charging device of the present invention is used for the Car Battery charging of lithium battery electrical automobile, has following characteristics:
1, based on the unit parallel technology of CAN
The unit output parameter can not meet the demands, and the vehicle-mounted charge machine that satisfies this requirement exists design, debugging and bulky trouble, certainly will increase cost like this.The application adopts modular building method, and the power supply of two platform independent is together in parallel, and improves power output; Based on the CAN master slave mode, the output current of every power supply and the rate of change of voltage are consistent when guaranteeing parallel connection, reach current-sharing effect preferably during parallel connection;
2, adopt based on the active power factor adjustment technology
Adopt active PFC principle, utilize the Boost converter, make the power factor (PF) of AC side can reach more than 95%, the busbar voltage of inverter bridge is elevated to 380V simultaneously, and possesses automatic constant-pressure and current-limiting function;
3, parallel resonance soft switch technique
Through in major loop, increasing the resonance link, utilize electric capacity and inductance to produce quasi-resonance, realize that the no-voltage of switching tube on the inverter bridge is open-minded, thereby reduce switching loss, improve the efficient of charger.
This charging device of the present invention is applicable to the lithium cell charging of the electric automobile of various different capacities; These characteristics that has and employing based on active power adjustment technology, parallel resonance soft switch technique, hardware electric current and voltage PID regulation technology, high-frequency inversion, rectification and filtering technique; The input of charging machine width, high efficiency, high power factor have been realized; Dependable performance has been actively promoted the industrialization process of electric automobile.
Claims (9)
1. pure electric automobile lithium battery charging device, it is characterized in that: said device adopts modular building method, comprises two units based on the parallel connection of CAN master slave mode; Two said unit structures are consistent, and the rate of change of output current and voltage is consistent.
2. pure electric automobile lithium battery charging device as claimed in claim 1 is characterized in that: said unit mainly is made up of the EMI module that electrically connects, input control switch, rectification unit, active power factor adjustment unit, high-frequency inversion unit, resonant element, high-frequency isolation unit, output filter unit, detection module and control and protected location;
Said EMI module comprises input EMI unit, EMI processing unit and output EMI unit; Said input EMI unit suppresses the interference of input to charger; Said EMI processing unit and output EMI unit suppress the conducted interference of Circuit Fault on Secondary Transformer respectively;
Said rectification module comprises uncontrollable rectification unit of power frequency and the uncontrollable rectification unit of output; The uncontrollable rectification unit of said power frequency becomes single-phase alternating current into the less direct current of pulsation; The uncontrollable rectification unit of said output utilizes the uncontrollable rectification circuit of single-phase bridge to realize high-frequency alternating current is transformed into the less direct current of pulsation;
Said detection module comprises load signal detecting unit and electric current and voltage detecting unit; The voltage and current signal of said load signal detection battery is judged charger and battery status; The output voltage of the inductive current of said electric current and voltage detection active power factor adjustment unit, busbar voltage and the uncontrollable rectification unit of said power frequency.
3. pure electric automobile lithium battery charging device as claimed in claim 2; It is characterized in that: said active power factor adjustment unit adopts active PFC principle; Utilize the Boost converter; Power factor (PF) regulating charger improves the busbar voltage of inverter bridge simultaneously, and possesses automatic constant-pressure and current-limiting function.
4. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: said input control switch is switch closure in the normal back of state-detection, cut-off switch during fault.
5. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: said resonant element is made up of electric capacity and inductance, realizes that switch tube zero voltage is open-minded, forms the parallel resonance soft switch technique.
6. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: said high-frequency inversion unit is realized constant DC voltage is transformed into high frequency square wave voltage through voltage source inverter.
7. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: the isolation of input voltage and output voltage is realized in said high-frequency isolation unit through high frequency transformer.
8. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: said output filter unit utilizes passive filter circuit to realize Rectified alternating current is transformed into constant DC.
9. pure electric automobile lithium battery charging device as claimed in claim 2 is characterized in that: said control and protected location are mainly realized generation, constant voltage, constant current, input overvoltage protection, input under-voltage protection, overcurrent protection, short-circuit protection, overtemperature protection, charging process control and the output battery status measuring ability of pwm pulse.
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| CN201210116775.6A CN102647006B (en) | 2012-04-20 | 2012-04-20 | Charging device for lithium battery of pure electric vehicle |
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| CN201210116775.6A CN102647006B (en) | 2012-04-20 | 2012-04-20 | Charging device for lithium battery of pure electric vehicle |
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| CN102647006A true CN102647006A (en) | 2012-08-22 |
| CN102647006B CN102647006B (en) | 2014-11-12 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746569A (en) * | 2014-01-22 | 2014-04-23 | 哈尔滨工程大学 | High-power-factor constant-voltage constant-current programmable switching power supply and power supply method |
| CN104362720A (en) * | 2014-09-29 | 2015-02-18 | 株洲南车时代电气股份有限公司 | Storage battery charging system |
| CN106655421A (en) * | 2016-11-14 | 2017-05-10 | 深圳市钜能科技有限公司 | Multifunctional car charger |
| CN106655431A (en) * | 2016-12-21 | 2017-05-10 | 江西佰仕通电子科技有限公司 | Charger circuit capable of automatically adjusting current |
| CN107176040A (en) * | 2017-05-17 | 2017-09-19 | 北京新能源汽车股份有限公司 | Vehicle-mounted charging system and automobile |
| CN108621814A (en) * | 2017-03-24 | 2018-10-09 | 华盛新能源科技（深圳）有限公司 | One kind being based on V2V charge-discharge systems and method |
| CN108928258A (en) * | 2018-08-15 | 2018-12-04 | 广州麦芮声电子有限公司 | A kind of power-supply system and electric car of electric car |
| CN114148195A (en) * | 2021-12-14 | 2022-03-08 | 奇瑞商用车（安徽）有限公司 | Low-voltage platform electric automobile charging system |
| CN114188922A (en) * | 2021-11-08 | 2022-03-15 | 力智电子(深圳)有限公司 | Battery protection integrated circuit |
| CN114665726A (en) * | 2022-02-28 | 2022-06-24 | 中车株洲电力机车研究所有限公司 | Electronic power transformer and charging method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746569A (en) * | 2014-01-22 | 2014-04-23 | 哈尔滨工程大学 | High-power-factor constant-voltage constant-current programmable switching power supply and power supply method |
| CN104362720A (en) * | 2014-09-29 | 2015-02-18 | 株洲南车时代电气股份有限公司 | Storage battery charging system |
| CN106655421A (en) * | 2016-11-14 | 2017-05-10 | 深圳市钜能科技有限公司 | Multifunctional car charger |
| CN106655431A (en) * | 2016-12-21 | 2017-05-10 | 江西佰仕通电子科技有限公司 | Charger circuit capable of automatically adjusting current |
| CN106655431B (en) * | 2016-12-21 | 2023-05-12 | 江西佰仕通电子科技有限公司 | Automatic current regulation charger circuit |
| CN108621814A (en) * | 2017-03-24 | 2018-10-09 | 华盛新能源科技（深圳）有限公司 | One kind being based on V2V charge-discharge systems and method |
| CN107176040A (en) * | 2017-05-17 | 2017-09-19 | 北京新能源汽车股份有限公司 | Vehicle-mounted charging system and automobile |
| CN108928258A (en) * | 2018-08-15 | 2018-12-04 | 广州麦芮声电子有限公司 | A kind of power-supply system and electric car of electric car |
| CN114188922A (en) * | 2021-11-08 | 2022-03-15 | 力智电子(深圳)有限公司 | Battery protection integrated circuit |
| CN114188922B (en) * | 2021-11-08 | 2024-08-23 | 力智电子(深圳)有限公司 | Protection integrated circuit of battery |
| CN114148195A (en) * | 2021-12-14 | 2022-03-08 | 奇瑞商用车（安徽）有限公司 | Low-voltage platform electric automobile charging system |
| CN114665726A (en) * | 2022-02-28 | 2022-06-24 | 中车株洲电力机车研究所有限公司 | Electronic power transformer and charging method |
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