CN102114765B - Hybrid power drive system and control method and vehicle provided with system - Google Patents
Hybrid power drive system and control method and vehicle provided with system Download PDFInfo
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Abstract
The invention provides a hybrid power drive system, a control method and a vehicle, which comprise an engine, a first motor, a clutch, a second motor, a speed-reducing mechanism, an energy storage device, a motor controller, a power supply manager and a master contactor, wherein the engine, the first motor, the clutch, the second motor and speed-reducing mechanism are connected in sequence, the energy storage device is connected with the first motor and the second motor electrically and respectively by the master contactor, and the motor controller is electrically connected with the first motor and the second motor respectively; the power supply manager is used for detecting the status of the master contactor and sending the status to the motor controller; and the motor controller is used for controlling the drive system to be in a fault mode according to information sent by the power supply manager. For the hybrid power drive system, the control method and the vehicle, the vehicle can be controlled to continuously run when voltage difference of a single battery is overlarge or a sampling line of the battery is damaged.
Description
Technical field
The invention belongs to hybrid power field, relate to a kind of hybrid electric drive system and control method and there is the vehicle of this system.
Background technology
Along with social development, the problem lacking in order to solve the energy, hybrid electric vehicle and pure electric vehicle produce thereupon, existing hybrid electric drive system, comprise driving engine, the first motor, power-transfer clutch, the second motor, speed reduction gearing, closed-center system, electric machine controller, power supervisor and main contactor, described driving engine, the first motor, power-transfer clutch, the second motor and speed reduction gearing are sequentially connected, described closed-center system is electrically connected to the first motor and the second motor respectively by described main contactor, described electric machine controller is electrically connected to described the first motor and described the second motor respectively.The power of hybrid electric vehicle and pure electric vehicle is mainly derived from power battery pack, in the battery pack on hybrid electric vehicle, between every batteries, there are differences, and causes on-vehicle battery when work, and the voltage of every batteries and electric weight also there will be difference.When the voltage difference of cell is excessive or battery sampling line loss bad time, in line with the principle of protection battery, the power supervisor of existing hybrid power system will directly be controlled main contactor and disconnect, and does not allow battery continue feed, thereby causes vehicle to travel.At this moment user can only be trailer, not only to user, brings puzzlement, also can allow no small towing fee of user effort use.
Summary of the invention
The present invention is for solving the excessive or battery sampling line loss of the voltage difference when cell existing in prior art bad time, hybrid power system can directly control that main contactor disconnects and problem that vehicle cannot be travelled, provides the excessive or battery sampling line loss of a kind of voltage difference when cell bad time can control hybrid electric drive system and control method and the vehicle that vehicle continues to travel.
The invention provides a kind of hybrid electric drive system, comprise driving engine, the first motor, power-transfer clutch, the second motor, speed reduction gearing, closed-center system, electric machine controller, power supervisor and main contactor, described driving engine, the first motor, power-transfer clutch, the second motor and speed reduction gearing are sequentially connected, described closed-center system is electrically connected to the first motor and the second motor respectively by described main contactor, described electric machine controller is electrically connected to described the first motor and described the second motor respectively
Described power supervisor, for detection of the state of described main contactor, and sends to described electric machine controller;
Described electric machine controller, for the information sending according to power supervisor, controls described drive system in failure mode.
The present invention also provides a kind of control method of hybrid electric drive system, comprises the following steps:
Power supervisor detects the state of main contactor, and sends to electric machine controller;
The information that described electric machine controller sends according to described power supervisor, controls described drive system and enters failure mode.
The present invention also provides a kind of vehicle, comprises above-mentioned hybrid electric drive system.
Hybrid electric drive system provided by the invention and control method and vehicle are with respect to prior art, when the voltage difference of cell is excessive or battery sampling line loss bad time, after main contactor disconnects, electric machine controller detects after main contactor disconnection by power supervisor, motor controller controls drive system enters failure mode, be that electric machine controller sends message to power supervisor, by power supervisor, control the forced closed of main contactor, limit the horsepower output of the second motor simultaneously, make vehicle can continue to travel.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of embodiment of hybrid electric drive system of the present invention;
Fig. 2 is the structured flowchart of a kind of embodiment of electric machine controller of the present invention;
Fig. 3 is the diagram of circuit of a kind of embodiment of the control method of hybrid electric drive system of the present invention.
The specific embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, embodiments of the invention provide a kind of hybrid electric drive system, comprise driving engine 10, the first motor 20, power-transfer clutch 30, the second motor 40, speed reduction gearing 50, closed-center system 60, electric machine controller 1, power supervisor 2 and main contactor 3, described driving engine 10, the first motor 20, power-transfer clutch 30, the second motor 40 and speed reduction gearing 50 orders are connected, described closed-center system 60 is electrically connected to the first motor 20 and the second motor 40 respectively by described main contactor 3, described electric machine controller 1 is electrically connected to described the first motor 20 and described the second motor 40 respectively,
Described power supervisor 2, for detection of the state of described main contactor 3, and sends to described electric machine controller 1;
Described electric machine controller 1, for the information sending according to power supervisor 2, controls described drive system and enters failure mode.When power supervisor 2 detects main contactor disconnection, just control described drive system and enter failure mode.
When described drive system enters failure mode, described electric machine controller 1 transmits control signal to described power supervisor 2 to control described main contactor 3 closures, and the horsepower output of restriction the second motor 40.Described electric machine controller 1 sends closes message to power supervisor 2, power supervisor 2 is controlled described main contactor 3 closures, main contactor 3 closures make closed-center system 60 can continue to provide electric energy to the first motor 20 and the second motor 40, thereby the first motor 20 and the second motor 40 can outputting power to speed reduction gearing 50, vehicle just can travel, the horsepower output that limits the second motor 40 reduces the horsepower output of the second motor 40, makes the vehicle cannot fast running.The maximum output power of the second motor 40 is 50KW, and when drive system enters failure mode, the horsepower output of the second motor 40 is 12-15KW.
Further improve, described hybrid electric drive system also comprises the switch element 4 that enters failure mode for starting drive system, and described switch element 4 is electrically connected to described electric machine controller 1.
Further improve, shown in Fig. 2, described electric machine controller 1 comprises detecting unit 11 and control unit 12;
Described detecting unit 11, for detection of the status signal of switch element 4;
Described control unit 12, for when receiving the Continuity signal of switch element 4, the information sending according to power supervisor 2, controls described drive system and enters failure mode.When vehicle normally stops not turning off power, main contactor 3 can not disconnect, but work as vehicle, normally stops Guan electricity Shi, and main contactor 3 can disconnect.When vehicle restarts after normally stopping, main contactor 3 does not also have closure, when power supervisor 2 detects main contactor 3 disconnection, just control described drive system and enter failure mode, make vehicle when normal circumstances, also can make drive system enter failure mode, therefore increase switch element 4, when operating or controlling its conducting by other modes by user oneself, electric machine controller 1 just can enter failure mode by control-driven system, can avoid the maloperation of drive system self.The mode of master cock unit 4 conductings can be manual, but also conducting by other means, such as increasing the program of one section of judgement vehicle trouble, when the fault of vehicle appearance satisfies condition, 4 conductings of master cock unit, start the program that drive system enters failure mode.The mode of master cock unit 4 conductings is as well known to those skilled in the art, has not also just described one by one herein.
Further improve, described electric machine controller comprises detecting unit 11, control unit 12, the first timing unit 13, the second timing unit 14 and judging unit 15;
Described detecting unit 11, for detection of the status signal of switch element 4;
Described the first timing unit 13 starts timing after powering at vehicle, while receiving the Continuity signal of switch element 4 in very first time section, sends the first timing signal to described the second timing unit 14;
Described the second timing unit 14 for starting timing when switch element 4 conducting, sends the second timing signal to described control unit 12 when ON time reached for the second time period and receives the first timing signal;
Described judging unit 15, for judging that whether the current gear of vehicle is at P shelves or N shelves, and sends judged result to described control unit 12;
Described control unit 12, for when receiving the current gear of vehicle at P shelves or N shelves and the second timing signal, the information sending according to power supervisor 2, controls described drive system and enters failure mode.
It in 20s after vehicle powers on, is the self check time of vehicle launch, switch element 4 will be in the conducting of self check time and the timing to the ON time of switch element 4 of vehicle launch, in order to prevent when the normal vehicle operation, user manually makes switch element 4 conductings, make drive system enter failure mode, thereby make the vehicle cannot fast running.Under preferable case: very first time section is 0s-20s, the second time period was 3s-4s.
And require the current gear of vehicle at P shelves or N shelves, and be to consider above the safety of vehicle, prevent that vehicle is when running at high speed, drive system enters suddenly failure mode.
Further improve, described switch element 4 comprises EV button (being pure motor switch button) and HEV button (being hybrid power shift knob).Can certainly reset the program that a pushbutton enable drive system enters failure mode, but in order not increase the parts on vehicle, directly adopt original EV button and HEV button on vehicle to enter failure mode to start drive system.
Further improve, described electric machine controller 1 is the micro controller system of model TMS320F2812.
The present invention also provides a kind of control method of hybrid electric drive system, comprises the following steps:
Power supervisor 2 detects the state of main contactor 3, and sends to electric machine controller 1;
The information that described electric machine controller 1 sends according to described power supervisor 2, controls described drive system and enters failure mode.
Further improve, when described electric machine controller 1 is controlled described drive system and entered failure mode, described electric machine controller 1 transmits control signal to described power supervisor 2 to control described main contactor 3 closures, and the horsepower output of restriction the second motor 40.As long as when electric machine controller 1 receives the information that main contactor 3 disconnects, just control described drive system and enter failure mode, when described drive system enters failure mode, described electric machine controller 1 transmits control signal to described power supervisor 2 to control described main contactor 3 closures, and the horsepower output of restriction the second motor 40.When described main contactor 3 closures, just can provide power to the first motor 20 and the second motor 40, vehicle just can travel, and the horsepower output of restriction the second motor 40 makes vehicle can not run at high speed to prevent not feed rapidly of closed-center system.
Further improve, this control method is further comprising the steps of:
The status signal of detector switch unit 4;
When switch element 4 conducting, the information that described electric machine controller 1 sends according to described power supervisor 2, controls described drive system and enters failure mode.
Further improve, this control method comprises the following steps:
When switch element 4 conducting, judge whether conducting in the very first time section after vehicle powers on of switch element 4;
In the very first time section of switch element 4 after vehicle powers on, during conducting, judge whether the ON time of switch element 4 reached for the second time period;
When the ON time of switch element 4 reached for the second time period, the information that described electric machine controller 1 sends according to described power supervisor 2, controls described drive system and enters failure mode.
Further improve, this control method comprises the following steps:
Judge that whether the current gear of vehicle is at P shelves or N shelves
When the current gear of vehicle is at P shelves or N shelves, and the ON time of switch element 4 is while reaching for the second time period, and the information that described electric machine controller 1 sends according to described power supervisor 2, controls described drive system and enter failure mode.
As shown in Figure 3, a kind of control method of hybrid electric drive system in embodiments of the invention, comprises the following steps:
Whether step S01, detect start and to press the conducting of EV button and HEV button, if not, and end of program; If all conductings, enter step S02;
Step S02, judges the whether very first time section T1 after vehicle powers on of EV button and HEV button
Interior conducting, if not, end of program, if so, system enters step S03;
Step S03, judges whether the ON time of EV button and HEV button reaches the second time period T2, if not, end of program, if so, system enters step S04;
Step S04, judges whether the current gear of vehicle is P shelves or N shelves, if not, end of program, if so, system enters step S05;
Step S05, judges whether power supervisor 1 detects main contactor 2 and disconnect, if not, end of program, if so, system enters step S06;
Step S06, electric machine controller 1 control-driven system enters failure mode, and system enters step S07;
Step S07, described electric machine controller 1 transmits control signal to described power supervisor 2 to control described main contactor 3 closures, and the horsepower output of restriction the second motor 40.
In step S01, if while only adopting EV button or HEV button to enter the switch of failure mode as startup drive system, when vehicle launch, only press EV button or HEV button, system just enters electric-only mode or hybrid mode, rather than failure mode, therefore adopt EV button and HEV button as startup drive system, to enter the switch of failure mode simultaneously, do not increase the parts on vehicle, can effectively start drive system and enter when needed failure mode simultaneously.
Order for above-mentioned step S02 and step S03 can be changed, can work as while meeting step S03, in to step S02, very first time section is carried out timing, but because if EV button and HEV button be not in the very first time section T1 after vehicle powers on during conducting, ON time timing for EV button and HEV button is nonsensical, increase on the contrary the complexity of program, therefore preferable case: enter again step S03 meeting in step S02 situation, very first time section T1 is 0s-20s, and the second time period T2 is 3s-4s.
In above-mentioned step S04, the order of step S04 and above-mentioned step S02, step S03 can be changed, in the time of can working as switch element 4 conducting, first judging whether the current gear of vehicle satisfies condition carries out the judgement in step S02, step S03 again, or step S04 and step S02, step S03 are passable simultaneously, but as long as any one above-mentioned condition does not meet, drive system all cannot enter failure mode.
The present invention also provides a kind of vehicle, comprises above-mentioned hybrid electric drive system.
For hybrid electric drive system and the method for work that the further description embodiment of the present invention provides, existing details are as follows in conjunction with specific embodiments:
When the voltage difference of cell is excessive or battery sampling line loss is bad while waiting battery failures, directly control main contactor 3 disconnections of hybrid power system, vehicle also just cannot travel.Now user wants to allow vehicle enter failure mode, user allows vehicle restart, in the very first time of vehicle launch section T1, press EV button and HEV button, and the ON time of EV button and HEV button is to the second time period T2, for example very first time section T1 is 20s, the second time period T2 is 3s, in the 20s of vehicle launch, press EV button and HEV button, and when the ON time of EV button and HEV button is 3s, continue to judge whether the current gear of vehicle is P shelves or N shelves, P shelves are parking shelves, N shelves are that neutral gear enters suddenly failure mode in motion to prevent vehicle, when the current gear of vehicle is P shelves or N shelves, continue to judge whether power supervisor 2 detects main contactor 3 and disconnect, judge it is because main contactor 3 disconnects to cause that vehicle cannot travel, owing to can directly controlling main contactor 3 when hybrid power system, disconnect, when even vehicle restarts again, but do not entering before failure mode, main contactor 3 also cannot be controlled closed.When power supervisor 2 detects main contactor 3 disconnection, electric machine controller 1 control-driven system enters failure mode, be that electric machine controller 1 transmits control signal to power supervisor 2, by power supervisor 2 according to signal control main contactor 3 closures of electric machine controller 1, now vehicle can travel, the horsepower output of electric machine controller 1 restriction the second motor 40, due to generally when the vehicle launch, power-transfer clutch 30 all disconnects, the power of vehicle is all that the second motor 40 provides, therefore limit the horsepower output of the second motor 40, also just limited the moving velocity of vehicle.Certainly when other faults appear in vehicle, during such as the first motor 20 or the second motor 40 appearance damage, main contactor 3 can not disconnect, and therefore, when major failure appears in vehicle, vehicle still cannot travel.
Hybrid electric drive system provided by the invention and control method and vehicle, the battery failures such as the excessive or battery sampling line loss of the voltage difference of cell is bad, hybrid power system can connect while controlling main contactor 3 disconnection, electric machine controller 1 can transmit control signal to power supervisor 2, by power supervisor 2, control main contactor 3 closures, the horsepower output of electric machine controller 1 restriction the second motor 40 is with the moving velocity of restriction vehicle simultaneously, make when the battery failures such as the voltage difference of cell is excessive or battery sampling line loss is bad appear in vehicle, vehicle can continue to travel.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (16)
1. a hybrid electric drive system, comprise driving engine (10), the first motor (20), power-transfer clutch (30), the second motor (40), speed reduction gearing (50), closed-center system (60), electric machine controller (1), power supervisor (2) and main contactor (3), described driving engine (10), the first motor (20), power-transfer clutch (30), the second motor (40) and speed reduction gearing (50) order are connected, described closed-center system (60) is electrically connected to the first motor (20) and the second motor (40) respectively by described main contactor (3), described electric machine controller is electrically connected to described the first motor (20) and described the second motor (40) respectively, it is characterized in that:
Described power supervisor (2), for detection of the state of described main contactor (3), and sends to described electric machine controller (1);
Described electric machine controller (1), for the information sending according to power supervisor (2), controls described drive system and enters failure mode;
Described electric machine controller (1) is controlled described main contactor (3) closure, and described closed-center system (60) is to described the first motor (20) and described the second motor (40) power supply.
2. hybrid electric drive system as claimed in claim 1, it is characterized in that: described hybrid electric drive system also comprises the switch element (4) that enters failure mode for starting drive system, described switch element (4) is electrically connected to described electric machine controller (1).
3. hybrid electric drive system as claimed in claim 2, is characterized in that: described electric machine controller (1) comprises detecting unit (11) and control unit (12);
Described detecting unit (11), for detection of the status signal of switch element (4);
Described control unit (12), during for Continuity signal when switch element (4), the information sending according to power supervisor (2), controls described drive system and enters failure mode.
4. hybrid electric drive system as claimed in claim 2, is characterized in that: described electric machine controller comprises detecting unit (11), control unit (12), the first timing unit (13), the second timing unit (14) and judging unit (15);
Described detecting unit (11), for detection of the status signal of switch element (4);
Described the first timing unit (13) starts timing after powering at vehicle, while receiving the Continuity signal of switch element (4) in very first time section, sends the first timing signal to described the second timing unit (14);
Described the second timing unit (14) for starting timing when switch element (4) conducting, sends the second timing signal to described control unit (12) when ON time reached for the second time period and receives the first timing signal;
Described judging unit (15), for judging that whether the current gear of vehicle is at P shelves or N shelves, and sends judged result to described control unit (12);
Described control unit (12), for when receiving the current gear of vehicle at P shelves or N shelves and the second timing signal, the information sending according to power supervisor (2), controls described drive system and enters failure mode.
5. hybrid electric drive system as claimed in claim 4, is characterized in that: very first time section is 0s-20s.
6. hybrid electric drive system as claimed in claim 4, is characterized in that: the second time period was 3s-4s.
7. hybrid electric drive system as claimed in claim 2, is characterized in that: described switch element comprises pure motor switch button and hybrid power shift knob.
8. hybrid electric drive system as claimed in claim 1, is characterized in that: described electric machine controller (1) is the micro controller system of model TMS320F2812.
9. the control method of the hybrid electric drive system as described in claim 1-8 any one, is characterized in that: comprise the following steps:
Power supervisor (2) detects the state of main contactor (3), and sends to electric machine controller (1);
The information that described electric machine controller (1) sends according to described power supervisor (2), controls described drive system and enters failure mode;
When described electric machine controller (1) is controlled described drive system and entered failure mode, described electric machine controller (1) transmits control signal to described power supervisor (2) to control described main contactor (3) closure.
10. the control method of hybrid electric drive system as claimed in claim 9, is characterized in that: further comprising the steps of:
The status signal of detector switch unit (4);
When switch element (4) conducting, the information that described electric machine controller (1) sends according to described power supervisor (2), controls described drive system and enters failure mode.
The control method of 11. hybrid electric drive systems as claimed in claim 9, is characterized in that: further comprising the steps of:
The status signal of detector switch unit (4);
When switch element (4) conducting, judge whether conducting in the very first time section after vehicle powers on of switch element (4);
In the very first time section of switch element (4) after vehicle powers on, during conducting, judge whether the ON time of switch element (4) reached for the second time period;
When the ON time of switch element (4) reached for the second time period, the information that described electric machine controller (1) sends according to described power supervisor (2), controls described drive system and enters failure mode.
The control method of 12. hybrid electric drive systems as claimed in claim 11, is characterized in that: further comprising the steps of:
Judge that whether the current gear of vehicle is at P shelves or N shelves
When the current gear of vehicle is at P shelves or N shelves, and the ON time of switch element (4) is while reaching for the second time period, and the information that described electric machine controller (1) sends according to described power supervisor (2), controls described drive system and enter failure mode.
The control method of 13. hybrid electric drive systems as claimed in claim 11, is characterized in that: very first time section is 0s-20s.
The control method of 14. hybrid electric drive systems as claimed in claim 11, is characterized in that: the second time period was 3s-4s.
The control method of 15. hybrid electric drive systems as described in claim 9-14 any one, is characterized in that: further comprising the steps of:
When described electric machine controller (1) is controlled described drive system and is entered failure mode, described electric machine controller (1) transmits control signal to described power supervisor (2) to control described main contactor (3) closure, and the horsepower output of restriction the second motor (40).
16. 1 kinds of vehicles, is characterized in that: comprise the hybrid electric drive system as described in claim 1-8 any one.
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| CN103166530A (en) * | 2013-01-11 | 2013-06-19 | 杨美明 | Magnetic-electric engine |
| KR101665279B1 (en) * | 2013-03-25 | 2016-10-11 | 쟈트코 가부시키가이샤 | Failure determination device for hybrid vehicles and failure determination method therefor |
| CN103802663B (en) * | 2014-01-28 | 2017-02-01 | 广东工业大学 | Hybrid power system and control method thereof |
| CN113428166A (en) * | 2021-07-31 | 2021-09-24 | 重庆长安汽车股份有限公司 | Vehicle driving mode control method and system and vehicle |
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