CN102862471A - Charging device and charging method of hybrid car - Google Patents
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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
Technical field
The present invention relates to charging equipment for automobile and charging method thereof, relate in particular to a kind of hybrid vehicle charging unit and charging method thereof.
Background technology
When vehicle was in lock car static condition, each controller is operation still, and required dark current can be provided by low tension battery.The low tension battery capacity of cell of tradition car is generally larger, this is because automobile needs low tension battery that the current start driving engine is provided in start-up course, along with vehicle becomes large, engine swept volume is also larger, therefore the electric current that needs low tension battery to provide is also larger, adopt the 12V lead-acid storage battery as example take low tension battery, the capacity of cell of general minicar is between 32～45Ah, compact car is between 42～60Ah, middle-and-high-ranking large discharge capacity car generally between 60～90Ah, luxury large discharge capacity vehicle even can use the storage battery of 120Ah left and right sides capacity.But hybrid vehicle is owing to being equipped with high voltage power battery pack and drive motor, in start-up course, utilize the high-tension battery group to provide electric current direct start the engine to drive motor, starting current to low tension battery requires greatly to reduce, therefore, the low tension battery capacity of cell of using in the hybrid vehicle is generally all smaller, but because hybrid vehicle has more multi-controller and electronics package than orthodox car, therefore when vehicle lock car static condition, the dark current that moves each controller is larger than the required electric current of traditional vehicle.
The 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 the prior art, charging for low tension battery generally is to detect low tension battery by battery management system whether to need charging, concrete is CN 101916888A such as publication number, and name is called the Patent Application Publication file of hybrid power and power battery of pure electric automobile intelligent charging equalization method and device.Yet when automobile was in lock car state, battery management system was in power failure state, and whether can't detect low tension battery needs charging.In this case, when the user is parked in vehicle in the garage need not one after week even one month, low tension battery on the car can be by thoroughly emptying, can't start smoothly vehicle when causing the user into the car, more seriously, if after the low tension battery effective capacity discharges, continue to place, might cause low tension battery restoratively to destroy.
In view of this, be necessary in fact to propose a kind of device and charging method of hybrid vehicle charging, avoid low tension battery excessively to use, even avoid occuring and restoratively to destroy.
Summary of the invention
The problem that the present invention solves provides a kind of device and charging method of hybrid vehicle charging, avoids low tension battery excessively to use, even avoids occuring and can't restoratively destroying.
For addressing the above 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;
The high-tension battery group;
Starting switch, described starting switch has two states at least, wherein, be applicable to the described low tension battery of conducting to the power supply of described the first current consumer at the first state, be applicable to the described low tension battery of conducting to the power supply of described the first and second current consumers at the second state;
The second charge control module is suitable for detecting high-tension battery Battery pack electric weight;
The first charge control module, voltage for detection of described low tension battery, when detecting described low tension battery voltage and be lower than predetermined battery voltage and starting switch and be in the first state or the second state and the second charge control module and judge that high-tension battery Battery pack electric weight is not less than the predetermined battery electric weight, the described high-tension battery group of conducting is to the circuit of described low tension battery charging.
Alternatively, described charging unit also comprises: driving engine, when being applicable to described high-tension battery Battery pack electric weight and being lower than the predetermined battery electric weight, under described the second charge control module control, start, and this driving engine charges to described high-tension battery group.
Alternatively, described charging unit also comprises: DC decompression module, described DC decompression module are applicable to the high voltage direct current of described high-tension battery group is converted to low-voltage DC so that described low tension battery is charged.
Alternatively, described charging unit also comprises:
The driven by power module is used for controlling enabling of described DC decompression module;
Second switch is applicable to the described low tension battery of conducting to the power supply of described driven by power module;
The car load administrative unit is used for the disconnection of control second switch with closed.
Alternatively, described the first charge control module is to start module without key, and described charging unit also comprises:
The first switch is used for the described low tension battery of conducting to the described power supply that starts module without key;
The vehicle body administrative unit is used for controlling the disconnection of described the first switch with closed.
Alternatively, described the first charge control module is to start module without key, and described charging unit also comprises: key chip.
Alternatively, described the first charge control module is to start module without key, and described charging unit also comprises:
The 3rd switch links to each other without key startup module with described, is used for conducting or disconnects described low tension battery to the power supply of described the first current consumer;
The 4th switch links to each other without key startup module with described, is used for conducting or disconnects described low tension battery to the power supply of described the first and second current consumers.
Alternatively, described the second charge control module is the car load administrative unit.
Alternatively, described starting switch also has the third state that is in closed condition.
Alternatively, described the first current consumer is the current consumer of the non-indispensability of driving, and described the 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:
The first charge control module detects the voltage of low tension battery;
When detecting described low tension battery voltage and be lower than predetermined battery voltage and starting switch and be in the first state or the second state, the second charge control module judges whether high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight; Described starting switch is applicable to the described low tension battery of conducting to the power supply of the first current consumer at the first state, is applicable to the described low tension battery of conducting to the power supply of the first and second current consumers at the second state;
If not, the described high-tension battery group of described the first charge control module conducting is to the circuit of described low tension battery charging;
In to described low tension battery process of charging, described the second charge control module judges whether described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight.
Alternatively, if when described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight, described the second charge control module control engine starts, to described high-tension battery group charging; In to described high-tension battery group process of charging, the described high-tension battery group of described the first charge control module conducting is to the circuit of described low tension battery charging.
Alternatively, the described high-tension battery group of described the first charge control module conducting realizes by the DC decompression module described low tension battery charging.
Alternatively, described the first charge control module is to start module without key, described charging method also comprises: after the vehicle body administrative unit detects left front car door opening, control the first switch closure so that described low tension battery is switched on to the described power supply that starts module without key, describedly start module without key and get and carry out the described voltage that detects described low tension battery with first frequency when electric.
Alternatively, described the first charge control module is to start module without key, and the described high-tension battery group of described the first charge control module conducting comprises the circuit of described low tension battery charging:
Describedly start module without key and send the charging request to described car load administrative unit;
Described car load administrative unit control second switch is closed, so that described low tension battery is switched on the power supply of driven by power module;
Described driven by power module gets when electric, sends enable signal to described DC decompression module.
Alternatively, described the first charge control module is to start module without key, when detecting described low tension battery voltage and be lower than predetermined battery voltage and described starting switch and be in the first state or the second state, described charging method also comprises: the described signal that starts module detection and checking key chip without key, after checking was passed through, described the second charge control module began to carry out describedly to judge whether described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight.
Compared with prior art, the present invention has the following advantages: adopt charging unit at hybrid vehicle, when low tension battery voltage is lower than predetermined battery voltage and described starting switch and is in the first state or the second state, namely automobile in use, described low tension battery need charge; The described high-tension battery group of described the first charge control module conducting is by the circuit of described DC decompression module to described low tension battery charging, simultaneously, in order to protect the high-tension battery group, before to the low tension battery charging, need to adopt the second charge control module to detect described high-tension battery Battery pack electric weight and whether be lower than the predetermined battery electric weight; If high-tension battery group electric weight is sufficient, then the circuit of low tension battery charging is switched on, if high-tension battery group short of electricity, then need start the engine, first to described high-tension battery group charging, to the charging of high-tension battery group simultaneously, can carry out the charging to low tension battery, when the second charge control module detects described high-tension battery Battery pack electric weight and is not less than the predetermined battery electric weight, disconnect described high-tension battery group charging unit, complete to the charging of high-tension battery group; When the cell pressure that detects described low tension battery when the first charge control module is not less than predetermined battery voltage, disconnect described low tension battery charging unit, charging to low tension battery is complete, can avoid like this low tension battery excessively to use, even avoids occuring and can't restoratively destroying.
Description of drawings
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 charging method diagram of circuit corresponding to hybrid vehicle charging unit that the specific embodiment of the invention provides.
The specific embodiment
Excessively use for fear of low tension battery, even avoid occuring and can't restoratively destroying, the invention provides a kind of hybrid vehicle charging unit 2, be suitable for being electrically connected with the first current consumer 31, the second current consumer 32, described charging unit 2 comprises:
High-tension battery group 42;
Starting switch 43, described starting switch 43 has two states at least, wherein, is applicable to the power supply of 41 pairs of described the first current consumers 31 of the described low tension battery of conducting at the first state, be applicable to the power supply of 41 pairs of described the first and second current consumers 31,32 of the described low tension battery of conducting at the second state;
The second charge control module 44 is suitable for detecting high-tension battery group 42 battery electric quantities;
The first charge control module 45, voltage for detection of described low tension battery 41, when detecting described low tension battery 41 voltages and be lower than predetermined battery voltage and starting switch 43 and be in the first state or the second state and the second charge control module 44 and judge that high-tension battery groups 42 battery electric quantities are not less than the predetermined battery electric weight, the circuit of 42 pairs of described low tension batterys 41 chargings of the described high-tension battery group of conducting.
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with accompanying drawing specific embodiments of the invention are described in detail.
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, the second current consumer 32, and described charging unit 1 comprises:
High-tension battery group 12;
The first charge control module 13, described the first charge control module 13 is suitable for detecting the voltage of described low tension battery 11;
Starting switch 14, described starting switch 14 can have three states, wherein, be applicable to the described low tension battery 11 of conducting and described the first current consumer 31 at the first state, described the first current consumer 31 is the current consumer of the non-indispensability of driving, such as DVD, Cigarette lighter etc., that is: and the first state is the ACC shelves; Be applicable to the described low tension battery 11 of conducting and described the second current consumer 32 at the second state, described the second current consumer 32 is the indispensable current consumer of driving, such as driving instrument, electric power steering, safety air bag etc., that is: and the second state is the ON shelves; Be in closed condition in the third state, that is: the third state is the OFF shelves;
The second charge control module, described the second charge control module are suitable for detecting described high-tension battery group 12 battery electric quantities;
In specific implementation process, described charging unit 1 also comprises:
Driven by power module 16 is used for controlling enabling of described DC decompression module 15;
The second relay 17 is applicable to the power supply of 11 pairs of described driven by power modules 16 of the described low tension battery of conducting;
Car load administrative unit 18 is used for the disconnection of control the second relay 17 with closed.
In the present embodiment, in order to make each functions of modules integrated, described the first charge control module 13 is to start module 13 ' without key, and described charging unit 1 also comprises:
The first relay 19 is applicable to the described low tension battery 11 of conducting to the described power supply that starts module 13 ' without key;
Vehicle body administrative unit 20 is used for controlling the disconnection of described the first relay 19 with closed;
The 3rd relay 34 links to each other without key startup module 13 ' with described, is used for conducting or disconnects described low tension battery 11 to the power supply of described the first current consumer 31;
The 4th relay 35 links to each other without key startup module 13 ' with described, is used for conducting or disconnects described low tension battery 11 to the power supply of described the first and second current consumers 32.
In specific implementation process, the 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 the second charge control module is car load administrative unit 18.
Need to prove, described the first charge control module 13 also can be for except starting other module the module 13 ' without key, for example, and for keyless access system is not installed, the automobile that can only adopt machinery to unblank to enter, described the first charge control module 13 can be the car load control unit, at this moment, and the first relay 19, vehicle body administrative unit 20, key chip 33, the three relays 34, the four relays 35 are not parts essential in the charging unit.
The hybrid vehicle charging unit that the embodiment of the invention provides in the corresponding diagram 2, the hybrid vehicle charging method schematic flow sheet that Fig. 3 provides for the embodiment of the invention.
Execution in step S21 after described vehicle body administrative unit 20 detects left front car door opening, controls described the first relay 19 closures; Described low tension battery 11 is switched on to described power supply without key startup module 13 '.
Whether the purpose of this step is to detect to have chaufeur to enter, if when the driver's seat of described hybrid vehicle is arranged on right front position, whether this step correspondingly detects right front car door and open.
Execution in step S22, the described voltage that detects described low tension battery 11 without key startup module 13 ' with first frequency.
Described first frequency can be the millisecond magnitude.
Execution in step S23 when detecting described low tension battery 11 voltages and be lower than predetermined battery voltage and described starting switch 14 and be in the first state or the second state, describedly starts module 13 ' without key and sends the charging request to described car load administrative unit 18.When detecting described low tension battery 11 voltages and be not less than predetermined battery voltage or described starting switch 14 and be not in the first state or the second state, describedly start module 13 ' without key and continue to detect, namely execution in step S22 still.
Described testing process can be by the state that starts described low tension battery 11 voltages of module 13 ' direct-detection and starting switch 15 without key, also can be by starting module 13 ' is obtained described low tension battery 11 voltages and starting switch 15 by control bus state without key.
In this step, described starting switch 14 is in the first state by described when starting module 13 ' and detect without key, described without described the 3rd relay 34 closures of key startup module 13 ' control, like this, described starting switch 14 whether be in the first state also can be by judging described the 3rd relay 34 whether obtain by closure.Similarly, when described starting switch 14 is in the second state, describedly start described the 4th relay 35 closures of module 13 ' control without key, judge that alternative that whether described starting switch 14 be in the second state is for judging whether closure of described the 4th relay 35.
Execution in step 24 describedly starts the signal that module 13 ' detects key chip 33 without key, after detecting and verify, and when authenticating to key chip 33 and be in the car, execution in step S25.
Because general key chip 33 is carried by the driver at any time, so after carrying out this step and can avoiding the driver to start automobile, the equipment such as DVD are in use, and the driver has left vehicle, this moment, low tension battery 11 chargings were activated, even the high tension battery charging is activated the safety hazard that produces.
The detection of this step also alternative of checking key chip 33 also can be setting pressure sensor on left front driver's seat, and the pressure that transmits when pressure sensor is during greater than certain threshold value, execution in step S25.Correspondingly, when the driver's seat is arranged on the right front, setting pressure sensor on right front driver's seat.
Execution in step S25, described car load administrative unit 18 begins to detect described high-tension battery group 12 battery electric quantities and whether is lower than the predetermined battery electric weight.
If the electric weight of described high-tension battery group 12 is not less than the predetermined battery electric weight, execution in step S26, described the second relay 17 closures of described car load administrative unit 18 controls are so that the power supply of 11 pairs of described driven by power modules 16 of described low tension battery is switched on.
Execution in step S27, described driven by power module 16 when electric, send enable signal to described DC decompression module 15.
Execution in step S28, described high-tension battery group 12 is switched on by the circuit of 15 pairs of described low tension battery 11 chargings of described DC decompression module, begin the charging to described low tension battery 11, described process of charging can make the voltage of low pressure electric power storage 11 promote, and described process of charging to low tension battery 11 finishes when voltage that module 13 ' detects described low tension battery 11 is not less than predetermined battery voltage described the startup without key.
If the electric weight of described high-tension battery group 12 is lower than the predetermined battery electric weight, execution in step S26 ', the described driving engine 21 of described the second charge control module (that is: the car load administrative unit 18) control starts, to described high-tension battery group 12 chargings, when the second charge control module detects described high-tension battery group 12 battery electric quantities and is not less than the predetermined battery electric weight, disconnect described high-tension battery group 12 chargings;
In execution in step S26 ' process, execution in step S26-S28.
In execution in step S28 process, also need execution in step S281, described car load administrative unit 18 judges with second frequency whether the battery electric quantity of described high-tension battery group 12 is lower than the predetermined battery electric weight, detect when being not less than, continue to carry out S28, detect when being lower than execution in step S26 '.Described second frequency is the millisecond magnitude.
The second frequency of the first frequency of the voltage of the detection low tension battery of hybrid vehicle and detection high-tension battery group predetermined battery electric weight can pre-set.
Need to prove, described the first charge control module 13 for except other module of starting without key the module 13 ' time, step S21 in the charging method shown in Figure 3, S23-S24 is nonessential step just.In specific implementation process, described car load administrative unit 18 also can be 32 power supplies of the second current consumer, when described step S23 is finished, describedly start module 13 ' without key and send the charging request to described car load administrative unit 18, described car load administrative unit 18 judges whether the second current consumer 32 is working properly, normally whether the instrumented data of for example driving a vehicle show, whether electric power steering is normal, can safety air bag normally be opened, if the second current consumer 32 is working properly, then carry out S24 and step afterwards.Like this can be so that car load need not to step on brake pedal again and press starting switch, at any time driving in the process of charging.
Although the present invention with preferred embodiment openly as above; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made possible change and modification; therefore; every content that does not break away from technical solution of the present invention; to any simple modification, equivalent variations and modification that above embodiment does, all belong to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (16)
1. a hybrid vehicle charging unit is suitable for being electrically connected with the first current consumer, the second current consumer, and described charging unit comprises:
Low tension battery;
The high-tension battery group;
Starting switch, described starting switch has two states at least, wherein, be applicable to the described low tension battery of conducting to the power supply of described the first current consumer at the first state, be applicable to the described low tension battery of conducting to the power supply of described the first and second current consumers at the second state;
The second charge control module is suitable for detecting high-tension battery Battery pack electric weight;
The first charge control module, voltage for detection of described low tension battery, when detecting described low tension battery voltage and be lower than predetermined battery voltage and starting switch and be in the first state or the second state and the second charge control module and judge that high-tension battery Battery pack electric weight is not less than the predetermined battery electric weight, the described high-tension battery group of conducting is to the circuit of described low tension battery charging.
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 electric weight and being lower than the predetermined battery electric weight, start under described the second charge control module control, 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, described DC decompression module are applicable to the high voltage direct current of described high-tension battery group is converted to low-voltage DC so that described low tension battery is charged.
4. charging unit according to claim 3 is characterized in that, described charging unit also comprises:
The driven by power module is used for controlling enabling of described DC decompression module;
Second switch is applicable to the described low tension battery of conducting to the power supply of described driven by power module;
The car load administrative unit is used for the disconnection of control second switch with closed.
5. charging unit according to claim 1 and 2 is characterized in that, described the first charge control module is to start module without key, and described charging unit also comprises:
The first switch is used for the described low tension battery of conducting to the described power supply that starts module without key;
The vehicle body administrative unit is used for controlling the disconnection of described the first switch with closed.
6. charging unit according to claim 1 and 2 is characterized in that, described the first charge control module is to start module without key, and described charging unit also comprises: key chip.
7. charging unit according to claim 1 and 2 is characterized in that, described the first charge control module is to start module without key, and described charging unit also comprises:
The 3rd switch links to each other without key startup module with described, is used for conducting or disconnects described low tension battery to the power supply of described the first current consumer;
The 4th switch links to each other without key startup module with described, is used for conducting or disconnects described low tension battery to the power supply of described the first and second current consumers.
8. charging unit according to claim 1 and 2 is characterized in that, described the second charge control module is the car load administrative unit.
9. charging unit according to claim 1 and 2 is characterized in that, described starting switch also has the third state that is in closed condition.
10. charging unit according to claim 1 and 2 is characterized in that, described the first current consumer is the current consumer of the non-indispensability of driving, and described the second current consumer is the indispensable current consumer of driving.
11. the charging method of charging unit according to claim 1 is characterized in that, comprises the steps:
The first charge control module detects the voltage of low tension battery;
When detecting described low tension battery voltage and be lower than predetermined battery voltage and starting switch and be in the first state or the second state, the second charge control module judges whether high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight; Described starting switch is applicable to the described low tension battery of conducting to the power supply of the first current consumer at the first state, is applicable to the described low tension battery of conducting to the power supply of the first and second current consumers at the second state;
If not, the described high-tension battery group of described the first charge control module conducting is to the circuit of described low tension battery charging;
In to described low tension battery process of charging, described the second charge control module judges whether described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight.
12. charging method according to claim 11 is characterized in that, if when described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight, described the second charge control module control engine starts, to described high-tension battery group charging; In to described high-tension battery group process of charging, the described high-tension battery group of described the first charge control module conducting is to the circuit of described low tension battery charging.
13. according to claim 11 or 12 described charging methods, it is characterized in that, the described high-tension battery group of described the first charge control module conducting realizes by the DC decompression module described low tension battery charging.
14. according to claim 11 or 12 described charging methods, it is characterized in that, described the first charge control module is to start module without key, described charging method also comprises: after the vehicle body administrative unit detects left front car door opening, control the first switch closure so that described low tension battery is switched on to the described power supply that starts module without key, describedly start module without key and get and carry out the described voltage that detects described low tension battery with first frequency when electric.
15. according to claim 11 or 12 described charging methods, it is characterized in that, described the first charge control module is to start module without key, and the described high-tension battery group of described the first charge control module conducting comprises the circuit of described low tension battery charging:
Describedly start module without key and send the charging request to described car load administrative unit;
Described car load administrative unit control second switch is closed, so that described low tension battery is switched on the power supply of driven by power module;
Described driven by power module gets when electric, sends enable signal to described DC decompression module.
16. according to claim 11 or 12 described charging methods, it is characterized in that, described the first charge control module is to start module without key, when detecting described low tension battery voltage and be lower than predetermined battery voltage and described starting switch and be in the first state or the second state, described charging method also comprises: the described signal that starts module detection and checking key chip without key, after checking was passed through, described the second charge control module began to carry out describedly to judge whether described high-tension battery Battery pack electric weight is lower than the predetermined battery electric weight.
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| CN103280872A (en) * | 2013-05-13 | 2013-09-04 | 中联重科股份有限公司 | Control method and device of power supply device, power supply system and equipment |
| CN106160040A (en) * | 2015-04-07 | 2016-11-23 | 低碳动能开发股份有限公司 | Automobile-used serondary lithium battery |
| CN106329611A (en) * | 2015-07-03 | 2017-01-11 | 现代自动车株式会社 | Charge control method and system for vehicle |
| CN106427581A (en) * | 2016-08-30 | 2017-02-22 | 东风柳州汽车有限公司 | Charging control method for low-voltage accumulator of electric automobile |
| CN106740120A (en) * | 2016-12-05 | 2017-05-31 | 广州汽车集团股份有限公司 | Low tension battery electric quantity controlling method and device |
| CN106849245A (en) * | 2017-02-28 | 2017-06-13 | 厦门理工学院 | A kind of intelligent charge control method of hybrid power passenger car system |
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