CN102862471B - Charging device and charging method of hybrid car - Google Patents

Charging device and charging method of hybrid car Download PDF

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Publication number
CN102862471B
CN102862471B CN201110186024.7A CN201110186024A CN102862471B CN 102862471 B CN102862471 B CN 102862471B CN 201110186024 A CN201110186024 A CN 201110186024A CN 102862471 B CN102862471 B CN 102862471B
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China
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tension battery
battery
charging
low tension
module
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CN201110186024.7A
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Chinese (zh)
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CN102862471A (en
Inventor
包寿红
余才光
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上海华普汽车有限公司
浙江吉利控股集团有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The invention provides a charging device of a hybrid car. The charging device is suitable for being electrically connected with a first electric appliance and a second electric appliance. The charging device comprises a low-voltage storage battery, a high-voltage battery pack, a starting switch, a second charge control module and a first charge control module, wherein the starting switch is used for conducting the low-voltage storage battery at the first state to provide power for the first electric appliance, and conducting the low-voltage storage battery at the second state to provide the power for the first electric appliance and the second electric appliance; and the high-voltage battery pack is conducted to charge the low-voltage storage battery when the conditions that the voltage of the low-voltage storage battery is lower than the voltage of the pre-set battery, and the starting switch is at the first state or the second state are detected by the first charge control module, and the condition that the electricity of the batteries of the high-voltage battery pack is not lower than the electricity of the pre-set batteries is judged by the second charge control module. The invention further provides a charging method of the hybrid car. With the adoption of the charging device and the charging method provided by the invention, the excess use of the low-voltage storage battery can be prevented, and the non-recoverable damage can be prevented.

Description

Hybrid vehicle charging unit and charging method
Technical field
The present invention relates to charging equipment for automobile and charging method thereof, particularly relate to a kind of hybrid vehicle charging unit and charging method thereof.
Background technology
When vehicle is in car locking static condition, each controller still runs, and required dark current can be provided by low tension battery.The low tension battery capacity of cell of tradition car is general larger, this is because automobile needs low tension battery to provide current start driving engine in start-up course, along with vehicle becomes large, engine swept volume is also larger, therefore the electric current needing low tension battery to provide is also larger, 12V lead-acid storage battery is adopted for low tension battery, the capacity of cell of general minicar is between 32 ~ 45Ah, compact car is between 42 ~ 60Ah, middle-and-high-ranking huge discharge car is generally between 60 ~ 90Ah, and luxury huge discharge vehicle even can use the storage battery of about 120Ah capacity.But hybrid vehicle is owing to being equipped with high voltage power battery pack and drive motor, in start-up course, utilize high-tension battery group to provide electric current direct start the engine to drive motor, require greatly to reduce to the starting current of low tension battery, therefore, the low tension battery capacity of cell used in hybrid vehicle is general all smaller, but because hybrid vehicle has more multi-controller and electronics package than orthodox car, therefore, when vehicle car locking static condition, the dark current running each controller is larger than electric current needed for traditional vehicle.
User, sometimes after entering automobile, although be not activated driving engine, can open the equipment such as DVD, Cigarette lighter, and these equipment in use also can consume the capacity of low tension battery.
In prior art, charging for low tension battery is generally detect low tension battery the need of charging by battery management system, specifically if publication number is CN 101916888A, name is called the patent application publication of hybrid power and power battery of pure electric automobile intelligent charging equalization method and device.But when automobile is in car locking state, battery management system is in power failure state, low tension battery cannot be detected the need of charging.In this case, when vehicle to be parked in garage by user need not one week even after one month, low tension battery on car can by thorough emptying, vehicle cannot be started smoothly when causing user into the car, more seriously, if continue to place after low tension battery effective capacity discharges, low tension battery is likely caused restoratively to destroy.
In view of this, be necessary the device and the charging method that propose the charging of a kind of hybrid vehicle in fact, avoid low tension battery excessively to use, even avoid generation restoratively to destroy.
Summary of the invention
The problem that the present invention solves is to provide device and the charging method of the charging of a kind of hybrid vehicle, avoids low tension battery excessively to use, even avoids generation restoratively to destroy.
For solving the problem, the invention provides a kind of hybrid vehicle charging unit, be suitable for being electrically connected with the first current consumer, the second current consumer, described charging unit comprises:
Low tension battery;
High-tension battery group;
Starting switch, described starting switch at least has two states, wherein, be applicable to the power supply of low tension battery described in conducting to described first current consumer in the first state, be applicable to the power supply of low tension battery described in conducting to described first and second current consumers in the second state;
Second charge control module, is suitable for detecting high-tension battery Battery pack electricity;
First charge control module, for detecting the voltage of described low tension battery, when detect described low tension battery voltage lower than predetermined battery voltage and starting switch be in the first state or the second state and the second charge control module judges that high-tension battery Battery pack electricity is not less than predetermined battery electricity time, the circuit that described in conducting, high-tension battery group is charged to described low tension battery.
Alternatively, described charging unit also comprises: driving engine, and when being applicable to described high-tension battery Battery pack electricity lower than predetermined battery electricity, start under described second charge control module controls, this driving engine charges to described high-tension battery group.
Alternatively, described charging unit also comprises: DC decompression module, and described DC decompression module is applicable to the high voltage direct current of described high-tension battery group to be converted to low-voltage DC to charge to described low tension battery.
Alternatively, described charging unit also comprises:
Driven by power module, for controlling the enable of described DC decompression module;
Second switch, is applicable to the power supply of low tension battery described in conducting to described driven by power module;
Car load administrative unit, for controlling the disconnection of second switch with closed.
Alternatively, described first charge control module is start module without key, and described charging unit also comprises:
First switch, for low tension battery described in conducting to the described power supply starting module without key;
Vehicle body administrative unit, for controlling the disconnection of described first switch with closed.
Alternatively, described first charge control module is start module without key, and described charging unit also comprises: key chip.
Alternatively, described first charge control module is start module without key, and described charging unit also comprises:
3rd switch, starts module without key be connected, for the power supply of described low tension battery to described first current consumer that be turned on or off with described;
4th switch, starts module without key be connected, for the power supply of described low tension battery to described first and second current consumers that be turned on or off with described.
Alternatively, described second charge control module is car load administrative unit.
Alternatively, described starting switch also has the third state being in closed condition.
Alternatively, described first current consumer is the current consumer of non-indispensability of driving a vehicle, and described second current consumer is the indispensable current consumer of driving.
The present invention also provides a kind of charging method of charging unit, it is characterized in that, comprises the steps:
First charge control module detects the voltage of low tension battery;
When detect described low tension battery voltage lower than predetermined battery voltage and starting switch is in the first state or the second state time, the second charge control module judges that whether high-tension battery Battery pack electricity is lower than predetermined battery electricity; Described starting switch is applicable to the power supply of low tension battery described in conducting to the first current consumer in the first state, is applicable to the power supply of low tension battery described in conducting to the first and second current consumers in the second state;
If not, the circuit that described in described first charge control module conducting, high-tension battery group is charged to described low tension battery;
To in described low tension battery process of charging, described second charge control module judges that whether described high-tension battery Battery pack electricity is lower than predetermined battery electricity.
Alternatively, if when described high-tension battery Battery pack electricity is lower than predetermined battery electricity, described second charge control module controls engine starting, to described high-tension battery group charging; To in described high-tension battery group process of charging, the circuit that described in described first charge control module conducting, high-tension battery group is charged to described low tension battery.
Alternatively, high-tension battery group described in described first charge control module conducting is realized by DC decompression module described low tension battery charging.
Alternatively, described first charge control module is start module without key, described charging method also comprises: after vehicle body administrative unit detects left front car door opening, control the first switch to close and make described low tension battery start the power supply of module without key be switched on to described, described without key start to carry out when module obtains electric described in detect the voltage of described low tension battery with first frequency.
Alternatively, described first charge control module is start module without key, and described in described first charge control module conducting, high-tension battery group comprises the circuit that described low tension battery charges:
Described without key start module send charge request to described car load administrative unit;
Described car load administrative unit controls second switch and closes, and described low tension battery is switched on the power supply of driven by power module;
When described driven by power module obtains electric, send enable signal to described DC decompression module.
Alternatively, described first charge control module is start module without key, when detect described low tension battery voltage lower than predetermined battery voltage and described starting switch is in the first state or the second state time, described charging method also comprises: described without key start module detect and verify the signal of key chip, after being verified, described second charge control module starts to carry out describedly to judge that whether described high-tension battery Battery pack electricity is lower than predetermined battery electricity.
Compared with prior art, the present invention has the following advantages: on hybrid vehicle, adopt charging unit, when low tension battery voltage lower than predetermined battery voltage and described starting switch is in the first state or the second state time, namely automobile is in use, described low tension battery need charging; The circuit that described in described first charge control module conducting, high-tension battery group is charged to described low tension battery by described DC decompression module, simultaneously, in order to protect high-tension battery group, before to low tension battery charging, the second charge control module need be adopted whether to detect described high-tension battery Battery pack electricity lower than predetermined battery electricity; If high-tension battery group electricity is sufficient, then the circuit of low tension battery charging is switched on, if the short of electricity of high-tension battery group, then need start the engine, first to described high-tension battery group charging, to the charging of high-tension battery group simultaneously, the charging to low tension battery can be carried out, when the second charge control module detects that described high-tension battery Battery pack electricity is not less than predetermined battery electricity, disconnect described high-tension battery group charging unit, complete to the charging of high-tension battery group; When the first charge control module detects that the cell pressure of described low tension battery is not less than predetermined battery voltage, disconnect described low tension battery charging unit, complete to the charging of low tension battery, low tension battery can be avoided so excessively to use, even avoid generation restoratively to destroy.
Accompanying drawing explanation
Fig. 1 is the charging unit schematic diagram of hybrid vehicle provided by the invention;
Fig. 2 is the hybrid vehicle charging unit schematic diagram that the specific embodiment of the invention provides;
Fig. 3 is the charging method diagram of circuit that hybrid vehicle charging unit that the specific embodiment of the invention provides is corresponding.
Detailed description of the invention
In order to avoid low tension battery excessively uses, even avoid generation restoratively to destroy, the invention provides a kind of hybrid vehicle charging unit 2, be suitable for being electrically connected with the first current consumer 31, second current consumer 32, described charging unit 2 comprises:
Low tension battery 41;
High-tension battery group 42;
Starting switch 43, described starting switch 43 at least has two states, wherein, is applicable to the power supply of low tension battery 41 described in conducting to described first current consumer 31 in the first state, the power supply of low tension battery 41 described in conducting to described first and second current consumers 31,32 is applicable in the second state;
Second charge control module 44, is suitable for detecting high-tension battery group 42 battery electric quantity;
First charge control module 45, for detecting the voltage of described low tension battery 41, when detect described low tension battery 41 voltage lower than predetermined battery voltage and starting switch 43 be in the first state or the second state and the second charge control module 44 judges that high-tension battery group 42 battery electric quantity is not less than predetermined battery electricity time, the circuit that high-tension battery group 42 described in conducting is charged to described low tension battery 41.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
Fig. 2 is the specific embodiment of hybrid vehicle charging unit provided by the invention, and described charging unit 1 is applicable to be electrically connected with the first current consumer 31, second current consumer 32, and described charging unit 1 comprises:
Low tension battery 11;
High-tension battery group 12;
First charge control module 13, described first charge control module 13 is suitable for the voltage detecting described low tension battery 11;
Starting switch 14, described starting switch 14 can have three states, wherein, low tension battery 11 described in conducting and described first current consumer 31 is applicable in the first state, described first current consumer 31 is the current consumer of non-indispensability of driving a vehicle, such as DVD, Cigarette lighter etc., that is: the first state is ACC shelves; Be applicable to low tension battery 11 described in conducting and described second current consumer 32 in the second state, described second current consumer 32 is the current consumer of driving indispensability, such as drive a vehicle instrument, electric power steering, safety air bag etc., that is: the second state is ON shelves; Be in closed condition in the third state, that is: the third state is OFF shelves;
Second charge control module, described second charge control module is suitable for detecting described high-tension battery group 12 battery electric quantity;
Driving engine 21.
In specific implementation process, described charging unit 1 also comprises:
DC decompression module 15, described DC decompression module 15 is applicable to that the high voltage direct current of described high-tension battery group 12 is converted to low-voltage DC and charges to described low tension battery 11;
Driven by power module 16, for controlling the enable of described DC decompression module 15;
Second relay 17, is applicable to the power supply of low tension battery 11 described in conducting to described driven by power module 16;
Car load administrative unit 18, for controlling the disconnection of the second relay 17 with closed.
In the present embodiment, in order to make each functions of modules integrated, described first charge control module 13 is start module 13 ' without key, and described charging unit 1 also comprises:
First relay 19, is applicable to low tension battery 11 described in conducting to the described power supply starting module 13 ' without key;
Vehicle body administrative unit 20, for controlling the disconnection of described first relay 19 with closed;
Key chip 33;
3rd relay 34, starts module 13 ' without key be connected, for the power supply of described low tension battery 11 to described first current consumer 31 that be turned on or off with described;
4th relay 35, starts module 13 ' without key be connected, for the power supply of described low tension battery 11 to described first and second current consumers 32 that be turned on or off with described.
In specific implementation process, described first, second, third and the 4th relay 19,17,34,35 all can be set to other type of switch.
In the present embodiment, described second charge control module is car load administrative unit 18.
It should be noted that, described first charge control module 13 also can be other module except starting without key except module 13 ', such as, for not installing keyless access system, the automobile that machinery unblanks to enter can only be adopted, described first charge control module 13 can be full-vehicle control unit, now, and the first relay 19, vehicle body administrative unit 20, key chip 33, the 3rd relay the 34, four relay 35 is not parts required in charging unit.
The hybrid vehicle charging unit that in corresponding diagram 2, the embodiment of the present invention provides, the hybrid vehicle charging method schematic flow sheet that Fig. 3 provides for the embodiment of the present invention.
Perform step S21, after described vehicle body administrative unit 20 detects left front car door opening, control described first relay 19 and close; Described low tension battery 11 is switched on to the described power supply without key startup module 13 '.
Whether the object of this step detects to have chaufeur to enter, if the driver's seat of described hybrid vehicle is when being arranged on front right position, whether this step correspondingly detects right front car door and open.
Perform step S22, the described voltage detecting described low tension battery 11 without key startup module 13 ' with first frequency.
Described first frequency can be millisecond magnitude.
Perform step S23, when detect described low tension battery 11 voltage lower than predetermined battery voltage and described starting switch 14 is in the first state or the second state time, described without key startup module 13 ' send charge request to described car load administrative unit 18.When detect described low tension battery 11 voltage be not less than predetermined battery voltage or described starting switch 14 be not in the first state or the second state time, describedly start module 13 ' without key and continue to detect, namely still perform step S22.
Described testing process can by the state starting low tension battery 11 voltage and starting switch 15 described in module 13 ' direct-detection without key, also can by the state being obtained described low tension battery 11 voltage and starting switch 15 without key startup module 13 ' by control bus.
In this step, described starting switch 14 be in the first state by described without key start module 13 ' detect time, describedly start module 13 ' without key and control described 3rd relay 34 and close, like this, whether described starting switch 14 is in the first state and also can obtains by judging whether described 3rd relay 34 closes.Similarly, when described starting switch 14 is in the second state, describedly starts module 13 ' without key and control described 4th relay 35 and close, judge whether described starting switch 14 is in the alternative of the second state for judge whether described 4th relay 35 closes.
Perform step 24, the described signal starting module 13 ' detection key chip 33 without key, detects rear and verifies, when authenticating to key chip 33 and being in car, performs step S25.
Because general key chip 33 is carried by driver at any time, so perform after this step can avoid driver to start automobile, the equipment such as DVD are in use, and driver have left vehicle, now low tension battery 11 charging is activated, and even high tension battery charging is activated produced safety hazard.
The detection of this step also verifies that the alternative of key chip 33 also can be setting pressure sensor on left front driver's seat, when the pressure that pressure sensor transmits is greater than certain threshold value, performs step S25.Correspondingly, when driver's seat is arranged on right front, setting pressure sensor on right front driver's seat.
Perform step S25, described car load administrative unit 18 starts whether to detect described high-tension battery group 12 battery electric quantity lower than predetermined battery electricity.
If the electricity of described high-tension battery group 12 is not less than predetermined battery electricity, perform step S26, described car load administrative unit 18 controls described second relay 17 and closes, and described low tension battery 11 is switched on the power supply of described driven by power module 16.
Perform step S27, when described driven by power module 16 obtains electric, send enable signal to described DC decompression module 15.
Perform step S28, described high-tension battery group 12 is switched on the circuit that described low tension battery 11 charges by described DC decompression module 15, start the charging to described low tension battery 11, described process of charging can make the voltage of low pressure electric power storage 11 promote, without key startup module 13 ', the described process of charging to low tension battery 11 detects that the voltage of described low tension battery 11 terminates when being not less than predetermined battery voltage described.
If the electricity of described high-tension battery group 12 is lower than predetermined battery electricity, perform step S26 ', described second charge control module (that is: car load administrative unit 18) controls described driving engine 21 and starts, described high-tension battery group 12 is charged, when the second charge control module detects that described high-tension battery group 12 battery electric quantity is not less than predetermined battery electricity, disconnect and described high-tension battery group 12 is charged;
In execution step S26 ' process, perform step S26-S28.
In execution step S28 process, also need to perform step S281, with second frequency, described car load administrative unit 18 judges that whether the battery electric quantity of described high-tension battery group 12 is lower than predetermined battery electricity, detect when being not less than, continue perform S28, detect lower than time, perform step S26 '.Described second frequency is millisecond magnitude.
The first frequency of the voltage of the detection low tension battery of hybrid vehicle and the second frequency of detection high-tension battery group predetermined battery electricity can pre-set.
It should be noted that, described first charge control module 13 is that in the charging method shown in Fig. 3, step S21, S23-S24 are just nonessential step except when starting other module except module 13 ' without key.In specific implementation process, described car load administrative unit 18 also can be the second current consumer 32 and powers, when described step S23 is finished, described without key start module 13 ' send charge request to described car load administrative unit 18, described car load administrative unit 18 judges that whether the second current consumer 32 is working properly, such as driving a vehicle, whether instrumented data display is normal, whether electric power steering is normal, can safety air bag normally be opened, if the second current consumer 32 is working properly, then perform S24 and step afterwards.Car load can be made like this without the need to stepping on brake pedal again and pressing starting switch, drive a vehicle at any time in process of charging.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.

Claims (15)

1. a hybrid vehicle charging unit, be suitable for being electrically connected with the first current consumer, the second current consumer, described charging unit comprises:
Low tension battery;
High-tension battery group;
Starting switch, described starting switch at least has two states, wherein, be applicable to the power supply of low tension battery described in conducting to described first current consumer in the first state, be applicable to the power supply of low tension battery described in conducting to described first and second current consumers in the second state;
Second charge control module, is suitable for detecting high-tension battery Battery pack electricity;
First charge control module, for detecting the voltage of described low tension battery, when detect described low tension battery voltage lower than predetermined battery voltage and starting switch be in the first state or the second state and the second charge control module judges that high-tension battery Battery pack electricity is not less than predetermined battery electricity time, the circuit that described in conducting, high-tension battery group is charged to described low tension battery;
Wherein, described first charge control module is start module without key, and described charging unit also comprises: key chip.
2. charging unit according to claim 1, it is characterized in that, described charging unit also comprises: driving engine, when being applicable to described high-tension battery Battery pack electricity lower than predetermined battery electricity, start under described second charge control module controls, this driving engine charges to described high-tension battery group.
3. charging unit according to claim 1 and 2, it is characterized in that, described charging unit also comprises: DC decompression module, and described DC decompression module is applicable to the high voltage direct current of described high-tension battery group to be converted to low-voltage DC to charge to described low tension battery.
4. charging unit according to claim 3, is characterized in that, described charging unit also comprises:
Driven by power module, for controlling the enable of described DC decompression module;
Second switch, is applicable to the power supply of low tension battery described in conducting to described driven by power module;
Car load administrative unit, for controlling the disconnection of second switch with closed.
5. charging unit according to claim 1 and 2, is characterized in that, described charging unit also comprises:
First switch, for low tension battery described in conducting to the described power supply starting module without key;
Vehicle body administrative unit, for controlling the disconnection of described first switch with closed.
6. charging unit according to claim 1 and 2, is characterized in that, described charging unit also comprises:
3rd switch, starts module without key be connected, for the power supply of described low tension battery to described first current consumer that be turned on or off with described;
4th switch, starts module without key be connected, for the power supply of described low tension battery to described first and second current consumers that be turned on or off with described.
7. charging unit according to claim 1 and 2, is characterized in that, described second charge control module is car load administrative unit.
8. charging unit according to claim 1 and 2, is characterized in that, described starting switch also has the third state being in closed condition.
9. charging unit according to claim 1 and 2, is characterized in that, described first current consumer is the current consumer of non-indispensability of driving a vehicle, and described second current consumer is the indispensable current consumer of driving.
10. the charging method of charging unit according to claim 1, is characterized in that, comprises the steps:
First charge control module detects the voltage of low tension battery;
When detect described low tension battery voltage lower than predetermined battery voltage and starting switch is in the first state or the second state time, the second charge control module judges that whether high-tension battery Battery pack electricity is lower than predetermined battery electricity; Described starting switch is applicable to the power supply of low tension battery described in conducting to the first current consumer in the first state, is applicable to the power supply of low tension battery described in conducting to the first and second current consumers in the second state;
If not, the circuit that described in described first charge control module conducting, high-tension battery group is charged to described low tension battery;
To in described low tension battery process of charging, described second charge control module judges that whether described high-tension battery Battery pack electricity is lower than predetermined battery electricity.
11. charging methods according to claim 10, is characterized in that, if when described high-tension battery Battery pack electricity is lower than predetermined battery electricity, described second charge control module controls engine starting, to described high-tension battery group charging; To in described high-tension battery group process of charging, the circuit that described in described first charge control module conducting, high-tension battery group is charged to described low tension battery.
12. charging methods according to claim 10 or 11, is characterized in that, high-tension battery group described in described first charge control module conducting is realized by DC decompression module described low tension battery charging.
13. charging methods according to claim 10 or 11, it is characterized in that, described charging method also comprises: after vehicle body administrative unit detects left front car door opening, control the first switch to close and make described low tension battery start the power supply of module without key be switched on to described, the described voltage carrying out detecting with first frequency described low tension battery when obtaining electric without key startup module.
14. charging methods according to claim 10 or 11, it is characterized in that, described in described first charge control module conducting, high-tension battery group comprises the circuit that described low tension battery charges:
Described without key start module send charge request to car load administrative unit;
Described car load administrative unit controls second switch and closes, and described low tension battery is switched on the power supply of driven by power module;
When described driven by power module obtains electric, send enable signal to DC decompression module.
15. charging methods according to claim 10 or 11, it is characterized in that, when detect described low tension battery voltage lower than predetermined battery voltage and described starting switch is in the first state or the second state time, described charging method also comprises: described without key start module detect and verify the signal of key chip, after being verified, described second charge control module starts to carry out describedly to judge that whether described high-tension battery Battery pack electricity is lower than predetermined battery electricity.
CN201110186024.7A 2011-07-04 2011-07-04 Charging device and charging method of hybrid car CN102862471B (en)

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