CN101670816A

CN101670816A - Power-driven operating vehicle power supply system and switching control method thereof

Info

Publication number: CN101670816A
Application number: CN200910196792A
Authority: CN
Inventors: 熊伟威; 宁兴江; 孙江明
Original assignee: Shanghai Zhongke Shenjiang Electric Vehicle Co Ltd
Current assignee: Shanghai Zhongke Shenjiang Electric Vehicle Co Ltd
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-03-17
Anticipated expiration: 2029-09-29
Also published as: CN101670816B

Abstract

The invention relates to a power-driven operating vehicle power supply system and a switching control method thereof, mainly adopting two paths of supply circuits, wherein one path supplies power to achassis power system, and the other path supplies power to an operating system. Two paths are connected by a DC contactor, and any one battery pack can simultaneously supply power for two motor driving systems; meanwhile, the invention relates to the switching control method for the power supply system on the basis of a driving request and a battery SOC. The power-driven operating vehicle power supply system and the switching control method thereof improve the popularity of the power-driven operating vehicle power-driven system, lower production cost and fully utilize the characteristics of the power supply system of two battery packs; when one battery pack has no available electric energy or a battery management system has faults and the like, vehicles still can be driven or operated, thus improving system reliability; the power-driven operating vehicle power supply system has simple and practical structure, quick and convenient use, stable and reliable service ability and wide applicable range.

Description

Power-driven operating vehicle power supply system and method for handover control thereof

Technical field

The present invention relates to automobile power supply field, particularly electronlmobil electric power system control technology field specifically is meant a kind of power-driven operating vehicle power supply system and method for handover control thereof.

Background technology

Along with quickening of urbanization process, various city Operation Van constantly occurs, the maintenance of carrying out the city PE that various places all need these Operation Vans to continue, and wherein of paramount importance is exactly the urban sanitation car, and its demand is also grown simultaneously.The environmental sanitation car of urban highway cleaning use mainly comprises water truck, sweeping machine and garbage removing cart at present.Compare with other automobiles, the operating condition of environmental sanitation car has following characteristics: the speed of a motor vehicle is low, and generally in the urban highway operation, as water truck operation while travelling, the speed of a motor vehicle is generally between 10～15Km/h; Time of idle running is long, as idle during garbage removing cart loading and the unloading, does not stop paying out motivation substantially.Therefore environmental sanitation car fuel economy is poor, and exhaust emission is more serious.Pure electronic environmental sanitation car power system can adopt but be not limited to and adopt frequency control motor and lithium iron phosphate dynamic battery, green non-pollution, and noise is little, and running cost is low.

Related driven operating vehicle among the present invention mainly is based on electronic environmental sanitation car, and the driven operating vehicle for other is suitable for too certainly.The power system of driven operating vehicle is different with general elec. vehicle, not only comprises the driving power system that powered vehicle is travelled, and also comprises the operation power system that drives apparatus for work.General elec. vehicle has only an electrokinetic cell bag (even be divided into several bags on arranging, but by externally powering with an integral body behind the cable connection, and battery management system has only one), and only be required to be the power supply of a drive motor power system and elec. vehicle annex and get final product, do not need the switching between different electric power systems.And driven operating vehicle is a drive motor power system and the power supply of elec. vehicle annex except needs, also is required to be the power supply of operation electric system.Therefore, the forceful electric power electric power system of common pure electric vehicle can not be used for this vehicle, needs new forceful electric power circuit power supply system, also needs new method for handover control.

Summary of the invention

The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of can realize any power brick can be two motor driven systems power simultaneously, effectively improve that commonality, the cost of vehicular drive power system is lower, reliability is higher, simple and practical, use efficient and convenient, stable and reliable working performance, Applicable scope power-driven operating vehicle power supply system and method for handover control thereof comparatively widely.

In order to realize above-mentioned purpose, power-driven operating vehicle power supply system of the present invention and method for handover control thereof are as follows:

This power-driven operating vehicle power supply system, its principal feature is, described electric power system comprises chassis power system feed circuit and operating system feed circuit, described chassis power system feed circuit comprise chassis battery and the drive motor system of cross-over connection between the battery plus-negative plate of described chassis, described operating system feed circuit comprise operation battery and the operation electric system of cross-over connection between described operation battery plus-negative plate, cross-over connection has DC contactor between described chassis power system feed circuit and the described operating system feed circuit, described DC contactor is by its on off mode of vehicle control unit controls, make the cross-over connection in parallel of described drive motor system and operation electric system between the both positive and negative polarity of described chassis battery or described drive motor system and the cross-over connection in parallel of operation electric system between the both positive and negative polarity of described operation battery.

This power-driven operating vehicle power supply system can adopt following first kind of mode: be serially connected with first DC contactor between chassis battery wherein and the drive motor system, be serially connected with second DC contactor between described operation battery and the operation electric system, be connected by anodal DC contactor between the anode of described drive motor system and the anode of operation electric system, be connected by negative pole DC contactor or fuse between the negative terminal of described drive motor system and the negative terminal of operation electric system.

Anodal DC contactor between the anode of the drive motor system in this power-driven operating vehicle power supply system and the anode of operation electric system can be unidirectional DC contactor or bidirectional, dc contactless switch of a unidirectional DC contactor, two parallel connections.

First DC contactor in this power-driven operating vehicle power supply system is serially connected with between the anode of the positive pole of described chassis battery and drive motor system, and described second DC contactor is serially connected with between the anode of the positive pole of described operation battery and operation electric system.

Drive motor system in this power-driven operating vehicle power supply system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor.

Also comprise the drive motor controller pre-charge circuit in the chassis power system feed circuit in this power-driven operating vehicle power supply system, the cross-over connection of described drive motor controller pre-charge circuit is in the described first DC contactor two ends.

Drive motor controller pre-charge circuit in this power-driven operating vehicle power supply system comprises series connected successively first pre-charge-relay and first pre-charge resistance.

Also be serially connected with the first precharge fuse in the drive motor controller pre-charge circuit in this power-driven operating vehicle power supply system.

Also comprise first fuse in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first fuse one is terminated at the anode of described drive motor system, and the other end is connected between described first DC contactor and the anodal DC contactor.

Also comprise first circuit interrupting device in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first circuit interrupting device is serially connected with between the positive pole and described first DC contactor of described chassis battery.

Also comprise high pressure accessory system feed circuit in the chassis power system feed circuit in this power-driven operating vehicle power supply system, comprise the high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, the cross-over connection of described high-voltage electric vehicle accessory is between the negative pole of described first DC contactor and chassis battery.

Also comprise the annex high-voltage relay that is in series with described high-voltage electric vehicle accessory in the high pressure accessory system feed circuit in this power-driven operating vehicle power supply system.

Also comprise the accessory system fuse that is in series with described high-voltage electric vehicle accessory in the high pressure accessory system feed circuit in this power-driven operating vehicle power supply system.

Operation electric system in this power-driven operating vehicle power supply system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor.

Also comprise operation electric machine controller pre-charge circuit in the operating system feed circuit in this power-driven operating vehicle power supply system, the cross-over connection of described operation electric machine controller pre-charge circuit is in the described second DC contactor two ends.

Operation electric machine controller pre-charge circuit in this power-driven operating vehicle power supply system comprises series connected successively second pre-charge-relay and second pre-charge resistance.

Also be serially connected with the second precharge fuse in the operation electric machine controller pre-charge circuit in this power-driven operating vehicle power supply system.

Also comprise second fuse in the operating system feed circuit in this power-driven operating vehicle power supply system, described second fuse one is terminated at the anode of described operation electric system, and the other end is connected between described second DC contactor and the anodal DC contactor.

Also comprise second circuit interrupting device in the operating system feed circuit in this power-driven operating vehicle power supply system, described second circuit interrupting device is serially connected with between the positive pole and described second DC contactor of described operation battery.

This power-driven operating vehicle power supply system also can adopt the following second way: be serially connected with first DC contactor between the positive pole of chassis battery wherein and the anode of drive motor system, be serially connected with second DC contactor between the anode of the positive pole of described operation battery and operation electric system, be connected by DC contactor between first branch road between the positive pole of described chassis battery and the anode of operation electric system, be connected by DC contactor between second branch road between the anode of the positive pole of described operation battery and drive motor system, the negative pole of described chassis battery is connected with the negative pole of operation battery.

Also comprise first fuse in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first fuse one is terminated at the anode of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

Also comprise first circuit interrupting device in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first circuit interrupting device one is terminated at the positive pole of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

Also comprise second fuse in the operating system feed circuit in this power-driven operating vehicle power supply system, described second fuse one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor.

Also comprise second circuit interrupting device in the operating system feed circuit in this power-driven operating vehicle power supply system, described second circuit interrupting device one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor.

Should carry out the method for switching controls to above-mentioned power-driven operating vehicle power supply system, its principal feature is that described method may further comprise the steps:

(1) system judges whether chassis battery and operation battery satisfy the forceful electric power switching condition;

(2) if do not satisfy, then repeat above-mentioned steps (1);

(3) if satisfy, then system carries out power supply and switches warning, reminds driver safety to stop and carry out forceful electric power to switch;

(4) system judges whether power supply switching command button is pressed;

(5) if not, then return above-mentioned steps (1);

(6) if then system detects the back disconnection DC contactor of stopping;

(7) system carries out power supply switching between chassis battery and the operation battery and the forceful electric power operational processes that powers on;

(8) system carries out the indication of forceful electric power handover success, reminds the chaufeur forceful electric power to switch and finishes.

Whether this judge chassis battery and operation battery that power-driven operating vehicle power supply system is carried out in the method for switching controls satisfies the forceful electric power switching condition, may further comprise the steps:

(11) whether the state-of-charge of judging the state-of-charge of chassis battery and operation battery respectively is greater than the minimum state-of-charge of systemic presupposition;

(12) if the state-of-charge of the state-of-charge of chassis battery and operation battery all greater than/less than described minimum state-of-charge, then return the result who does not satisfy the forceful electric power switching condition;

(13) if the state-of-charge of the state-of-charge of chassis battery/operation battery greater than described minimum state-of-charge, and the state-of-charge of the state-of-charge of operation battery/chassis battery then returns the result who satisfies the forceful electric power switching condition less than described minimum state-of-charge.

This carries out power-driven operating vehicle power supply system carrying out power supply switching between chassis battery and the operation battery and the forceful electric power operational processes that powers in the method for switching controls, may further comprise the steps:

(21) system judges whether the car load key reaches " ON " shelves;

(22) if not, then return above-mentioned steps (1);

(23) if, the state-of-charge that then judges whether the chassis battery greater than the state-of-charge of described minimum state-of-charge and operation battery less than described minimum state-of-charge;

(24) if then carry out the chassis battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on;

(25) if not, judge whether that then the state-of-charge of operation battery is greater than described minimum state-of-charge;

(26) if then carry out the operation battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on;

(27) if not, then the electric fault warning is hanged down by system, and returns above-mentioned steps (1);

For above first kind of mode, this carries out power-driven operating vehicle power supply system carrying out the chassis battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers in the method for switching controls, may further comprise the steps:

(31) closed described anodal DC contactor of system and negative pole DC contactor;

(32) closed described first pre-charge-relay of system;

(33) system judges whether described drive motor controller in-to-in capacitance voltage is higher than the pre-charge voltage of systemic presupposition;

(34) if not, then repeat above-mentioned steps (33);

(35) if then system judges whether described operation electric machine controller in-to-in capacitance voltage is higher than described pre-charge voltage;

(36) if not, then repeat above-mentioned steps (35);

(37) if, then closed described first DC contactor, and disconnect described first pre-charge-relay;

(38) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure.

This carries out also comprising in the step (37) in the method for switching controls following processing to power-driven operating vehicle power supply system:

Closed described annex high-voltage relay.

This carries out power-driven operating vehicle power supply system carrying out the operation battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers in the method for switching controls, may further comprise the steps:

(41) closed described anodal DC contactor of system and negative pole DC contactor;

(42) closed described second pre-charge-relay of system;

(43) system judges whether described drive motor controller in-to-in capacitance voltage is higher than the pre-charge voltage of systemic presupposition;

(44) if not, then repeat above-mentioned steps (43);

(45) if then system judges whether described operation electric machine controller in-to-in capacitance voltage is higher than described pre-charge voltage;

(46) if not, then repeat above-mentioned steps (45);

(47) if, then closed described second DC contactor, and disconnect described second pre-charge-relay;

(48) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure.

This carries out also comprising in the step (47) in the method for switching controls following processing to power-driven operating vehicle power supply system:

Closed described annex high-voltage relay.

For the above second way, this carries out power-driven operating vehicle power supply system carrying out the chassis battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers in the method for switching controls, may further comprise the steps:

(51) DC contactor between closed described first branch road of system;

(52) closed described first DC contactor of system;

(53) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure.

This carries out power-driven operating vehicle power supply system carrying out the operation battery to switching power supply, precharge and the forceful electric power of drive motor system and the operation electric system operational processes that powers in the method for switching controls, may further comprise the steps:

(61) DC contactor between closed described second branch road of system;

(62) closed described second DC contactor of system;

(63) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure.

This power supply that carries out that power-driven operating vehicle power supply system is carried out in the method for switching controls switches and reports to the police, and is specially:

The flicker of system alarm lamp, simultaneity factor sounds the alarm.

This carries out power-driven operating vehicle power supply system carrying out the indication of forceful electric power handover success in the method for switching controls, is specially:

System lights forceful electric power handover success indicator lamp.

The power-driven operating vehicle power supply system and the method for handover control thereof of this invention have been adopted, because wherein at the characteristics of driven operating vehicle chassis driving power system and operating system itself, adopted the duplex feeding Circuits System, a branch road is chassis power system feed circuit, is mainly the power supply of drive motor system and high-voltage electric vehicle accessory; Another branch road is the operating system feed circuit, be mainly the power supply of operation electric system, two branch roads are connected by two DC contactor, realized that any one power brick all can be two motor driven systems and powers simultaneously, but also provide mainly based on driving request and battery SOC (State ofCharge, state-of-charge) electric power system method for handover control, not only improved the commonality of a driven operating vehicle driving power system, reduced productive costs, different working trucks can use same power system platform, and the electric power system characteristics of two power brick have been made full use of, when a power brick can not be utilized problems such as electric energy or battery management system break down, vehicle still can travel or operation, improved the reliability of total system, not only simple and practical, and use efficient and convenient, stable and reliable working performance, Applicable scope are comparatively extensive.

Description of drawings

Fig. 1 is the circuit theory scheme drawing of the power-driven operating vehicle power supply system of first kind of embodiment of the present invention.

Fig. 2 is the diagram of circuit of power-driven operating vehicle power supply system method for handover control of the present invention.

Fig. 3 is precharge in the power-driven operating vehicle power supply system method for handover control of the present invention and the diagram of circuit of going up forceful electric power.

Fig. 4 is the circuit theory scheme drawing of the power-driven operating vehicle power supply system of second kind of embodiment of the present invention.

The specific embodiment

In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.

Power-driven operating vehicle power supply system of the present invention, comprise chassis power system feed circuit and operating system feed circuit, described chassis power system feed circuit comprise chassis battery and the drive motor system of cross-over connection between the battery plus-negative plate of described chassis, described operating system feed circuit comprise operation battery and the operation electric system of cross-over connection between described operation battery plus-negative plate, cross-over connection has DC contactor between described chassis power system feed circuit and the described operating system feed circuit, described DC contactor is by its on off mode of vehicle control unit controls, make the cross-over connection in parallel of described drive motor system and operation electric system between the both positive and negative polarity of described chassis battery or described drive motor system and the cross-over connection in parallel of operation electric system between the both positive and negative polarity of described operation battery.

See also shown in Figure 1, wherein be first kind of embodiment of power-driven operating vehicle power supply system of the present invention, wherein, be serially connected with first DC contactor between described chassis battery and the drive motor system, be serially connected with second DC contactor between described operation battery and the operation electric system, be connected by anodal DC contactor between the anode of described drive motor system and the anode of operation electric system, be connected by negative pole DC contactor or fuse between the negative terminal of described drive motor system and the negative terminal of operation electric system; Anodal DC contactor between the anode of described drive motor system and the anode of operation electric system can be unidirectional DC contactor or bidirectional, dc contactless switch of a unidirectional DC contactor, two parallel connections.

Wherein, described first DC contactor is serially connected with between the anode of the positive pole of described chassis battery and drive motor system, and described second DC contactor is serially connected with between the anode of the positive pole of described operation battery and operation electric system; Described drive motor system comprises drive motor controller and drive motor, and described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor.

Simultaneously, also comprise the drive motor controller pre-charge circuit in the chassis power system feed circuit in this power-driven operating vehicle power supply system, the cross-over connection of described drive motor controller pre-charge circuit is in the described first DC contactor two ends; Described drive motor controller pre-charge circuit comprises series connected successively first pre-charge-relay and first pre-charge resistance, simultaneously, also is serially connected with the first precharge fuse in this drive motor controller pre-charge circuit.

Moreover, also comprise first fuse in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first fuse one is terminated at the anode of described drive motor system, and the other end is connected between described first DC contactor and the anodal DC contactor; Also comprise first circuit interrupting device in the power system feed circuit of described chassis, described first circuit interrupting device is serially connected with between the positive pole and described first DC contactor of described chassis battery; Also comprise high pressure accessory system feed circuit in the power system feed circuit of described chassis, comprise the high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, the cross-over connection of described high-voltage electric vehicle accessory is between the negative pole of described first DC contactor and chassis battery; Also comprise the annex high-voltage relay that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit; Also comprise the accessory system fuse that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit.

In addition, operation electric system in this power-driven operating vehicle power supply system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor.

Moreover, also comprise operation electric machine controller pre-charge circuit in the described operating system feed circuit, the cross-over connection of described operation electric machine controller pre-charge circuit is in the described second DC contactor two ends; Described operation electric machine controller pre-charge circuit comprises series connected successively second pre-charge-relay and second pre-charge resistance; Also be serially connected with the second precharge fuse in the described operation electric machine controller pre-charge circuit.

Simultaneously, also comprise second fuse in the operating system feed circuit in this power-driven operating vehicle power supply system, described second fuse one is terminated at the anode of described operation electric system, and the other end is connected between described second DC contactor and the anodal DC contactor; Also comprise second circuit interrupting device in the described operating system feed circuit, described second circuit interrupting device is serially connected with between the positive pole and described second DC contactor of described operation battery.

In the middle of reality was used, the electric power system that the present invention is used for driven operating vehicle realized according to following technical scheme:

This Operation Van forms power and electric power system by chassis power brick, chassis power brick management system, drive motor and controller thereof, operation power brick, operation power brick management system, operation motor and controller, entire car controller etc.The electric power system technical scheme is as follows:

Mainly be divided into the duplex feeding Circuits System, a branch road is chassis power system feed circuit, is made up of chassis battery, drive motor system and high-voltage electric vehicle accessory etc., is mainly the power supply of drive motor system and high-voltage electric vehicle accessory; Another branch road is the operating system feed circuit, is made up of operation battery, operation electric system etc., is mainly the power supply of operation electric system.In addition, two branch roads are connected by two DC contactor, thereby can realize that any power brick all can be two motor driven systems and powers simultaneously.

Wherein chassis power system feed circuit connection situation is as follows: power brick total positive pole in chassis links to each other with air switch/circuit breaker, and this air switch/circuit breaker is used for drive system forceful electric power circuit and manually disconnects, and generally is used for emergency situation or maintenance test etc.; Air switch/circuit breaker links to each other with DC contactor, and it disconnects with closed this DC contactor by vehicle control unit controls, is used for realizing that the disconnection of chassis power system feed circuit is with closed; DC contactor links to each other with fuse, and this fuse is a quick acting fuse, is used to prevent that chassis power system feed circuit electric current is excessive; The fuse drive motor controller links to each other; Drive motor controller links to each other with drive motor, forms the drive motor system jointly, is used to drive car load and travels; The drive motor controller negative terminal links to each other with the total negative pole of chassis power brick.It is as follows that high pressure accessory system power pack circuit connects situation: accessory system fuse one end links to each other with the chassis DC contactor, the other end links to each other with the annex high-voltage relay, the annex high-voltage relay links to each other with the high pressure annex, and the high pressure annex links to each other with chassis power brick negative pole.In addition, also comprise the electric machine controller pre-charge circuit: pre-charge-relay one end links to each other with air switch/circuit breaker, and the other end links to each other with pre-charge resistance, and pre-charge resistance links to each other with the precharge fuse, and the precharge fuse links to each other with the chassis DC contactor.This circuit can be realized the electric machine controller internal capacitance is charged.

Wherein operating system feed circuit connection situation is as follows: the total positive pole of operation power brick links to each other with air switch/circuit breaker, and this air switch/circuit breaker is used for drive system forceful electric power circuit and manually disconnects, and generally is used for emergency situation or maintenance test etc.; Air switch/circuit breaker links to each other with DC contactor, and it disconnects with closed this DC contactor by vehicle control unit controls, is used for realizing that the disconnection of operation power system feed circuit is with closed; DC contactor links to each other with fuse, and this fuse is a quick acting fuse, is used to prevent that operation power system feed circuit electric current is excessive; Fuse operation electric machine controller links to each other; The operation electric machine controller links to each other with the operation motor, forms the operation electric system jointly, is used to realize specific operation; Operation electric machine controller negative terminal links to each other with the total negative pole of operation power brick.In addition, also comprise the electric machine controller pre-charge circuit: pre-charge-relay one end links to each other with air switch/circuit breaker, and the other end links to each other with pre-charge resistance, and pre-charge resistance links to each other with the precharge fuse, and the precharge fuse links to each other with the operation DC contactor.This circuit can be realized the electric machine controller internal capacitance is charged.

Wherein between chassis power system power supply branch road and the operating system power supply branch road to be connected situation as follows: an end of anodal DC contactor links to each other with DC contactor in the chassis power system power supply branch road, and the DC contactor that the other end and operation power system are powered in the branch road links to each other; One end of negative pole DC contactor links to each other with the negative pole of chassis power brick, and the other end links to each other with the negative pole of operation power brick.

In order can more significantly to illustrate, see also shown in Figure 1, the invention provides a kind of feed circuit system that is used for driven operating vehicle, it mainly comprises the duplex feeding Circuits System, a branch road is chassis power system feed circuit, by chassis battery 21, drive motor controller 19, drive motor (DM, Drive Motor) 18 high-voltage electric annex (HAV,, High VoltageAccessories) 17 compositions such as grade are mainly drive motor system and 17 power supplies of high-voltage electric accessory system be made up of drive motor controller 19, drive motor 18; Another branch road is the operating system feed circuit, by operation battery 22, operation electric machine controller 14, operation motor (OM, Operation Motor) 15 compositions such as grade, is mainly the operation electric system power supply of being made up of operation electric machine controller 14, operation motor 15.In addition, two branch roads are connected with DC contactor 23 by DC contactor 4, thereby can realize that any power brick all can be two motor driven systems and powers simultaneously.

Wherein chassis power system feed circuit connection situation is as follows: chassis power brick 21 total anodal and air switch/circuit breakers 20, air switch/circuit breaker 20 links to each other with DC contactor 8, DC contactor 8 links to each other with fuse 6, and fuse 6 links to each other with drive motor controller 19; Drive motor controller 19 links to each other with drive motor 18, and drive motor controller 19 negative terminals link to each other with chassis power brick 21 total negative poles.It is as follows that high pressure accessory system power pack circuit connects situation: accessory system fuse 5 one ends link to each other with chassis DC contactor 8, the other end links to each other with annex high-voltage relay 11, annex high-voltage relay 11 links to each other with high pressure annex 17, and high pressure annex 17 links to each other with chassis power brick 21 negative poles.In addition, also comprise the electric machine controller pre-charge circuit: pre-charge-relay 10 1 ends link to each other with air switch/circuit breaker 20, the other end links to each other with pre-charge resistance 9, and pre-charge resistance 9 links to each other with precharge fuse 7, and precharge fuse 7 links to each other with DC contactor 8.This circuit can be realized the electric machine controller internal capacitance is charged.

Wherein operating system feed circuit connection situation is as follows: operation power brick 22 total positive poles link to each other with air switch/circuit breaker 16, air switch/circuit breaker 16 links to each other with DC contactor 3, DC contactor 3 links to each other with fuse 1, and fuse 1 operation electric machine controller 14 links to each other; Operation electric machine controller 14 links to each other with operation motor 15, and operation electric machine controller 14 negative terminals link to each other with operation power brick 22 total negative poles.In addition, also comprise the electric machine controller pre-charge circuit: pre-charge-relay 13 1 ends link to each other with air switch/circuit breaker 16, the other end links to each other with pre-charge resistance 12, and pre-charge resistance 12 links to each other with precharge fuse 2, and precharge fuse 2 links to each other with operation DC contactor 3.This circuit can be realized the electric machine controller internal capacitance is charged.

Wherein between chassis power system power supply branch road and the operating system power supply branch road to be connected situation as follows: an end of anodal DC contactor 4 links to each other with DC contactor 8 in the chassis power system power supply branch road, and the DC contactor 3 that the other end and operation power system are powered in the branch road links to each other; One end of negative pole DC contactor 23 links to each other with the negative pole of chassis power brick 21, and the other end links to each other with the negative pole of operation power brick 22.

See also Fig. 2 and shown in Figure 3 again, this carries out the method for switching controls to above-mentioned power-driven operating vehicle power supply system, comprising following steps:

(1) system judges that whether chassis battery and operation battery satisfy the forceful electric power switching condition, may further comprise the steps:

(a) whether the state-of-charge of judging the state-of-charge of chassis battery and operation battery respectively is greater than the minimum state-of-charge of systemic presupposition;

(b) if the state-of-charge of the state-of-charge of chassis battery and operation battery all greater than/less than described minimum state-of-charge, then return the result who does not satisfy the forceful electric power switching condition;

(c) if the state-of-charge of the state-of-charge of chassis battery/operation battery greater than described minimum state-of-charge, and the state-of-charge of the state-of-charge of operation battery/chassis battery then returns the result who satisfies the forceful electric power switching condition less than described minimum state-of-charge;

(2) if do not satisfy, then repeat above-mentioned steps (1);

(3) if satisfy, then system carries out power supply and switches warning, reminds driver safety to stop and carry out forceful electric power to switch, and the described power supply that carries out switches warning, is specially:

The flicker of system alarm lamp, simultaneity factor sounds the alarm;

(4) system judges whether power supply switching command button is pressed;

(5) if not, then return above-mentioned steps (1);

(6) if then system detects the back disconnection DC contactor of stopping;

(7) system carries out power supply switching between chassis battery and the operation battery and the forceful electric power operational processes that powers on, and may further comprise the steps:

(a) system judges whether the car load key reaches " ON " shelves;

(b) if not, then return above-mentioned steps (1);

(c) if, the state-of-charge that then judges whether the chassis battery greater than the state-of-charge of described minimum state-of-charge and operation battery less than described minimum state-of-charge;

(d) if, then carry out the chassis battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on, may further comprise the steps:

(i) closed described anodal DC contactor of system and negative pole DC contactor;

(ii) closed described first pre-charge-relay of system;

(iii) system judges whether described drive motor controller in-to-in capacitance voltage is higher than the pre-charge voltage of systemic presupposition;

(iv) if not, then repeat above-mentioned steps (iii);

(v) if then system judges whether described operation electric machine controller in-to-in capacitance voltage is higher than described pre-charge voltage;

(vi) if not, then repeat above-mentioned steps (v);

(vii) if then closed described first DC contactor, and disconnect described first pre-charge-relay wherein also comprises following processing:

Closed described annex high-voltage relay;

(viii) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure;

(e) if not, judge whether that then the state-of-charge of operation battery is greater than described minimum state-of-charge;

(f) if, then carry out the operation battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on, may further comprise the steps:

(ii) closed described second pre-charge-relay of system;

(iv) if not, then repeat above-mentioned steps (iii);

(vi) if not, then repeat above-mentioned steps (v);

(vii) if then closed described second DC contactor, and disconnect described second pre-charge-relay wherein also comprises following processing:

Closed described annex high-voltage relay;

(viii) system's setting success that powers on is masked as 1, finishes the forceful electric power handoff procedure.

(g) if not, then the electric fault warning is hanged down by system, and returns above-mentioned steps (1);

(8) system carries out the indication of forceful electric power handover success, reminds the chaufeur forceful electric power to switch and finishes, and the described forceful electric power handover success that carries out is indicated, and is specially:

System lights forceful electric power handover success indicator lamp.

In the middle of reality is used, the power supply state of the electric power system of the driven operating vehicle among the present invention, undertaken by following situation according to the available energy state of different power brick:

The available energy state of working process power brick is divided into three kinds of situations, and promptly chassis power brick and operation power brick all have and can utilize electric energy; Have only the chassis battery to be surrounded by and to utilize electric energy; Have only the operation battery to be surrounded by and to utilize electric energy.

(1) chassis power brick and operation power brick all have and can utilize electric energy

The chassis power brick provides electric energy for the drive motor system separately, the DC contactor closure in the chassis power system power supply branch road; The operation power brick provides electric energy for the operation electric system separately, the DC contactor closure in the operating system power supply branch road; DC contactor between branch road disconnects.

(2) have only the chassis battery to be surrounded by and to utilize electric energy

During the vehicle ' operation, the chassis power brick both provided electric energy for the drive motor system, provide electric energy for the operation electric system again, DC contactor in the chassis power system power supply branch road and the positive pole between branch road and negative pole DC contactor are all closed, and the DC contactor in the operation power system power supply branch road disconnects.

(3) have only the operation battery to be surrounded by and to utilize electric energy

The operation power brick both provided electric energy for the drive motor system, provide electric energy for the operation electric system again, DC contactor in the operating system power supply branch road and the positive pole between branch road and negative pole DC contactor are all closed, and the DC contactor in the chassis power system power supply branch road disconnects.

A kind of method for handover control that is used for the electric power system of driven operating vehicle also is provided among the present invention, has carried out according to following steps:

A, judge whether chassis power brick and operation power brick satisfy the forceful electric power switching condition, if execution in step B then then returns if not;

Chassis power brick and operation power brick have four kinds of states:

● state A, chassis power brick and operation power brick SOC (State of Charge, state-of-charge) are all greater than SOC min

● state B, chassis power brick SOC is greater than SOC min, and operation power brick SOC is less than SOC min

● state C, chassis power brick SOC is less than SOC min, and operation power brick SOC is greater than SOC min

● state D, chassis power brick and operation power brick SOC are all less than SOC min

Have only from just carrying out forceful electric power under state A changes the situation of state B or state C into and switch.State A is the normal condition before switching, and state D is warning or the charge condition that electric weight is about to exhaust.

B, power supply switch reports to the police, and alarm song takes place simultaneously in the alarm lamp flicker, reminds driver safety to stop and carry out forceful electric power to switch.

C, judge whether power supply switching command button is pressed, if execution in step D then returns steps A if not;

D, judgement are stopped (speed of a motor vehicle is zero) and are disconnected DC contactor;

E, carry out precharge and the forceful electric power flow process that powers on;

F, light forceful electric power handover success indicator lamp, remind driver's forceful electric power switch operating to finish, can the cruising operation.

Wherein, described precharge and the forceful electric power flow process subtask that powers on may further comprise the steps:

E1, judge whether the car load key reaches the ON shelves, if execution in step E2, as otherwise return;

E2, judge chassis power brick and operation power brick SOC all greater than SOC min, owing to satisfy switching condition, so execution in step E3;

E3, whether judge chassis power brick SOC, if execution in step E41 then, execution in step E51 then if not greater than SOC min;

When battery is in state B, promptly power brick SOC in chassis is greater than SOC min, and operation power brick SOC during less than SOC min on precharge and the forceful electric power electronic tasks as follows:

DC contactor between E41, closed chassis power system power supply branch road and the operating system power supply branch road;

E42, closed chassis power system power supply branch road in-to-in pre-charge-relay;

Whether E43, judgement drive motor controller (DMCU, Drive Motor Controller Unit) in-to-in capacitance voltage are higher than a certain setting value U0, if then execution in step E44, then continuation judgement if not;

Whether E44, judgement operation electric machine controller (OMCU, Operation Motor Controller Unit) in-to-in capacitance voltage are higher than a certain setting value U1, if then execution in step E45, then continuation judgement if not;

E45, closed chassis power system power supply branch road in-to-in DC contactor and high pressure accessory system high-voltage relay disconnect pre-charge-relay;

E46, execution in step E6.

When battery be in state C be chassis power brick SOC less than SOC min, and operation power brick SOC during greater than SOC min on precharge and the forceful electric power electronic tasks as follows:

E51, whether judge operation power brick SOC, if execution in step E52 then, execution in step E57 then if not greater than SOC min;

DC contactor between E52, closed chassis power system power supply branch road and the operating system power supply branch road;

E53, closed operation power system power supply branch road in-to-in pre-charge-relay;

E54, judge whether drive motor controller (DMCU) in-to-in capacitance voltage is higher than a certain setting value U0, if execution in step E55 then then continues to judge if not;

E55, judge whether operation electric machine controller (OMCU) in-to-in capacitance voltage is higher than a certain setting value U1, if execution in step E56 then then continues to judge if not;

E56, closed operation power system power supply branch road in-to-in DC contactor disconnect pre-charge-relay, closed chassis power system power supply branch road in-to-in high pressure accessory system high-voltage relay.

E57, fault alarm, chassis power brick and operation power brick SOC are all low excessively, can't connect forceful electric power;

E6, put the success that powers on and be masked as 1, so far finish the forceful electric power handoff procedure.

For the statement that can prepare more, see also shown in Figure 1, the power supply state of the electric power system that is used for driven operating vehicle among the present invention, undertaken by following situation according to the available energy state of different power brick:

The available energy state of working process power brick is divided into three kinds of situations, and promptly chassis power brick 21 and operation power brick 22 all have and can utilize electric energy; Have only chassis power brick 21 can utilize electric energy; Have only operation power brick 22 to have and to utilize electric energy.

(1) chassis power brick 21 and operation power brick 22 all have and can utilize electric energy

Chassis power brick 21 provides electric energy for drive motor system 18,19 separately, DC contactor 8 closures in the chassis power system power supply branch road; Operation power brick 22 provides electric energy for operation motor 15 systems separately, DC contactor 3 closures in the operating system power supply branch road; DC contactor 4,23 between branch road disconnects.

(2) have only chassis power brick 21 to have and to utilize electric energy

During the vehicle ' operation, chassis power brick 21 both provided electric energy for drive motor system 18,19, provide electric energy for operation electric system 14,15 again, DC contactor 8 in the chassis power system power supply branch road and the positive pole between branch road and negative pole DC contactor 4,23 are all closed, and the DC contactor 3 in the operation power system power supply branch road disconnects.

(3) have only operation power brick 22 to have and to utilize electric energy

Operation power brick 22 both provided electric energy for drive motor system 18,19, provide electric energy for operation electric system 14,15 again, DC contactor 3 in the operating system power supply branch road and the positive pole between branch road and negative pole DC contactor 4,23 are all closed, and the DC contactor 8 in the chassis power system power supply branch road disconnects.

The present invention also provides a kind of method for handover control that is used for the electric power system of driven operating vehicle, sees also Fig. 2 and shown in Figure 3 again, carries out according to following steps:

100, judge whether chassis power brick 21 and operation power brick 22 satisfy the forceful electric power switching condition, if execution in step 101 is then then returned if not;

Chassis power brick 21 and operation power brick 22 have four kinds of states: state A, and chassis power brick 21 and operation power brick 22SOC are all greater than SOC min; State B, chassis power brick 21SOC is greater than SOC min, and operation power brick 22SOC is less than SOC min; State C, chassis power brick 21SOC is less than SOC min, and operation power brick 22SOC is greater than SOCmin; State D, chassis power brick 21 and operation power brick 22SOC are all less than SOC min.Have only from just carrying out forceful electric power under state A changes the situation of state B or state C into and switch.State A is the normal condition before switching, and state D is warning or the charge condition that electric weight is about to exhaust.

101, power supply switches warning, and alarm song takes place simultaneously in the alarm lamp flicker, reminds driver safety to stop and carry out forceful electric power to switch.

102, judge whether power supply switching command button is pressed, if execution in step 103 is then returned step 101 if not;

103, judgement is stopped (speed of a motor vehicle is zero) and is disconnected DC contactor;

104, carry out precharge and the forceful electric power flow process that powers on;

105, light forceful electric power handover success indicator lamp, remind driver's forceful electric power switch operating to finish, can the cruising operation.

Wherein, described precharge and the forceful electric power flow process 104 that powers on sees also shown in Figure 3ly, may further comprise the steps:

110, judge whether the car load key reaches the ON shelves, if execution in step 111, as otherwise return;

111, judge chassis power brick 21 and operation power brick 22SOC all greater than SOC min, owing to satisfy switching condition, so execution in step 112;

112, whether judge chassis power brick 21SOC greater than SOC min, if execution in step 120 then, execution in step 130 then if not;

When battery is in state B, promptly power brick 21SOC in chassis is greater than SOC min, and operation power brick 22SOC during less than SOCmin on precharge and the forceful electric power electronic tasks as follows:

120, the DC contactor between closed chassis power system power supply branch road and the operating system power supply branch road;

121, closed chassis power system power supply branch road in-to-in pre-charge-relay;

122, judge whether drive motor controller (DMCU) in-to-in capacitance voltage is higher than a certain setting value U0, if then execution in step 123, then continuation judgement if not;

123, judge whether operation electric machine controller (OMCU) in-to-in capacitance voltage is higher than a certain setting value U1, if then execution in step 124, then continuation judgement if not;

124, closed chassis power system power supply branch road in-to-in DC contactor and high pressure accessory system high-voltage relay disconnect pre-charge-relay;

125, execution in step 113.

When battery be in state C be chassis power brick 21SOC less than SOC min, and operation power brick 22SOC during greater than SOCmin on precharge and the forceful electric power electronic tasks as follows:

130, whether judge operation power brick 22SOC greater than SOC min, if execution in step 131 then, execution in step 136 then if not;

131, the DC contactor between closed chassis power system power supply branch road and the operating system power supply branch road;

132, closed operation power system power supply branch road in-to-in pre-charge-relay;

133, judge whether drive motor controller (DMCU) in-to-in capacitance voltage is higher than a certain setting value U0, if then execution in step 134, then continuation judgement if not;

134, judge whether operation electric machine controller (OMCU) in-to-in capacitance voltage is higher than a certain setting value U1, if then execution in step 135, then continuation judgement if not;

135, closed operation power system power supply branch road in-to-in DC contactor disconnects pre-charge-relay, closed chassis power system power supply branch road in-to-in high pressure accessory system high-voltage relay.

136, fault alarm, chassis power brick 21 and operation power brick 22 SOC are all low excessively, can't connect forceful electric power;

113, put the success that powers on and be masked as 1, so far finish the forceful electric power handoff procedure.

See also shown in Figure 4 again, wherein be second kind of embodiment of power-driven operating vehicle power supply system of the present invention, except the part identical with first kind of embodiment, be serially connected with first DC contactor between the positive pole of chassis battery wherein and the anode of drive motor system, be serially connected with second DC contactor between the anode of the positive pole of described operation battery and operation electric system, be connected by DC contactor between first branch road between the positive pole of described chassis battery and the anode of operation electric system, be connected by DC contactor between second branch road between the anode of the positive pole of described operation battery and drive motor system, the negative pole of described chassis battery is connected with the negative pole of operation battery.

Wherein, drive motor system in this power-driven operating vehicle power supply system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor; Also comprise first fuse in the power system feed circuit of described chassis, described first fuse one is terminated at the anode of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

Simultaneously, also comprise first circuit interrupting device in the chassis power system feed circuit in this power-driven operating vehicle power supply system, described first circuit interrupting device one is terminated at the positive pole of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

Moreover, operation electric system in this power-driven operating vehicle power supply system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor.

Simultaneously, also comprise second fuse in the operating system feed circuit in this power-driven operating vehicle power supply system, described second fuse one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor; Also comprise second circuit interrupting device in the described operating system feed circuit, described second circuit interrupting device one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor.

In the middle of reality is used, see also shown in Figure 4, the feed circuit system that is used for driven operating vehicle among the present invention, wherein to connect situation as follows for chassis power system feed circuit: total positive pole of chassis power brick 31 links to each other with air switch 32; Air switch 32 links to each other with fuse 33; Fuse 33 links to each other with DC contactor 34; DC contactor 34 links to each other with drive motor controller 36; Drive motor controller 36 links to each other with drive motor 35, and the negative terminal of drive motor controller 36 links to each other with total negative pole of chassis power brick 31, has so just formed chassis power system feed circuit.

Wherein, described operating system feed circuit connection situation is as follows: total positive pole of operation power brick 37 links to each other with air switch 38; Air switch 38 links to each other with fuse 39; Fuse 39 links to each other with DC contactor 41; DC contactor 41 links to each other with operation electric machine controller 44; Operation electric machine controller 44 links to each other with operation motor 43; Operation electric machine controller 44 negative terminals link to each other with operation power brick 37 total negative poles, have so just formed operating system feed circuit.

Between described chassis power system power supply branch road and the operating system power supply branch road to be connected situation as follows: the power anode of the DC contactor 34 in the branch road of one end of DC contactor 42 and chassis power system links to each other between branch road, and the other end of DC contactor 42 links to each other with the anode of operation electric machine controller 44; The anode of the DC contactor 41 between branch road in one end of DC contactor 40 and the operating system power supply branch road links to each other, and the other end of DC contactor 40 links to each other with the anode of drive motor controller 36.

As second kind of embodiment of power-driven operating vehicle power supply system of the present invention, except with the method for first kind of embodiment in the identical step, the power supply state of the electric power system that is used for driven operating vehicle that is wherein provided is as follows:

The working process power supply state is divided into three kinds, and promptly chassis power brick 31 and operation power brick 37 all have and can utilize electric energy; Have only chassis power brick 31 to have and to utilize electric energy; Have only operation power brick 37 to have and to utilize electric energy.

(1) chassis power brick 31 and operation power brick 37 all have and can utilize electric energy

Chassis power brick 31 provides electric energy, DC contactor 34 closures for drive motor controller 36 and drive motor 35 separately; Operation power brick 37 provides electric energy, DC contactor 41 closures for operation electric machine controller 44 and operation motor 43 separately; DC contactor 40 and DC contactor 42 disconnect.

(2) have only chassis power brick 31 to have and to utilize electric energy

During the vehicle ' operation, chassis power brick 31 both provided electric energy for drive motor controller 36 and drive motor 35, provided electric energy for operation electric machine controller 44 and operation motor 43 again.At this moment, DC contactor 34 and DC contactor 42 closures, DC contactor 40 and DC contactor 41 disconnect.

(3) have only operation power brick 37 to have and to utilize electric energy

During the vehicle ' operation, operation power brick 37 both provided electric energy for drive motor controller 36 and drive motor 35, provided electric energy for operation electric machine controller 44 and operation motor 43 again.At this moment, DC contactor 40 and DC contactor 41 closures, DC contactor 34 and DC contactor 42 disconnect.

Wherein power-driven operating vehicle power supply system is carried out carrying out the chassis battery to the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers in the method for switching controls, may further comprise the steps:

(51) DC contactor between closed described first branch road of system;

(52) closed described first DC contactor of system;

(61) DC contactor between closed described second branch road of system;

(62) closed described second DC contactor of system;

Related driven operating vehicle among the present invention mainly is based on electronic environmental sanitation car, and the driven operating vehicle for other is suitable for too certainly.It is pointed out that simultaneously technical scheme of the present invention can also be applied on the engineering truck of vehicle-mounted apparatus for work, might not be confined to city Operation Vans such as water truck, sweeping machine and garbage removing cart.

The power-driven operating vehicle power supply system and the method for handover control thereof of this invention have been adopted, because wherein at the characteristics of driven operating vehicle chassis driving power system and operating system itself, adopted the duplex feeding Circuits System, a branch road is chassis power system feed circuit, is mainly the power supply of drive motor system and high-voltage electric vehicle accessory; Another branch road is the operating system feed circuit, be mainly the power supply of operation electric system, two branch roads are connected by two DC contactor, realized that any one power brick all can be two motor driven systems and powers simultaneously, but also provide mainly based on driving request and battery SOC (State ofCharge, state-of-charge) electric power system method for handover control, not only improve the commonality of a driven operating vehicle driving power system, reduced productive costs, different working trucks can use same power system platform, and the electric power system characteristics of two power brick have been made full use of, when a power brick can not be utilized problems such as electric energy or battery management system break down, vehicle still can travel or operation, improved the reliability of total system, not only simple and practical, and use efficient and convenient, stable and reliable working performance, Applicable scope are comparatively extensive.

In this specification sheets, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.

Claims

1, a kind of power-driven operating vehicle power supply system, it is characterized in that, described electric power system comprises chassis power system feed circuit and operating system feed circuit, described chassis power system feed circuit comprise chassis battery and the drive motor system of cross-over connection between the battery plus-negative plate of described chassis, described operating system feed circuit comprise operation battery and the operation electric system of cross-over connection between described operation battery plus-negative plate, cross-over connection has DC contactor between described chassis power system feed circuit and the described operating system feed circuit, described DC contactor is by its on off mode of vehicle control unit controls, make the cross-over connection in parallel of described drive motor system and operation electric system between the both positive and negative polarity of described chassis battery or described drive motor system and the cross-over connection in parallel of operation electric system between the both positive and negative polarity of described operation battery.

2, power-driven operating vehicle power supply system according to claim 1, it is characterized in that, be serially connected with first DC contactor between described chassis battery and the drive motor system, be serially connected with second DC contactor between described operation battery and the operation electric system, be connected by anodal DC contactor between the anode of described drive motor system and the anode of operation electric system, be connected by negative pole DC contactor or fuse between the negative terminal of described drive motor system and the negative terminal of operation electric system.

3, power-driven operating vehicle power supply system according to claim 2, it is characterized in that the anodal DC contactor between the anode of described drive motor system and the anode of operation electric system is unidirectional DC contactor or a bidirectional, dc contactless switch of a unidirectional DC contactor, two parallel connections.

4, power-driven operating vehicle power supply system according to claim 2, it is characterized in that, described first DC contactor is serially connected with between the anode of the positive pole of described chassis battery and drive motor system, and described second DC contactor is serially connected with between the anode of the positive pole of described operation battery and operation electric system.

5, power-driven operating vehicle power supply system according to claim 4, it is characterized in that, described drive motor system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor.

6, power-driven operating vehicle power supply system according to claim 5, it is characterized in that, also comprise the drive motor controller pre-charge circuit in the power system feed circuit of described chassis, the cross-over connection of described drive motor controller pre-charge circuit is in the described first DC contactor two ends.

7, power-driven operating vehicle power supply system according to claim 6 is characterized in that, described drive motor controller pre-charge circuit comprises series connected successively first pre-charge-relay and first pre-charge resistance.

8, power-driven operating vehicle power supply system according to claim 7 is characterized in that, also is serially connected with the first precharge fuse in the described drive motor controller pre-charge circuit.

9, according to each described power-driven operating vehicle power supply system in the claim 4 to 8, it is characterized in that, also comprise first fuse in the power system feed circuit of described chassis, described first fuse one is terminated at the anode of described drive motor system, and the other end is connected between described first DC contactor and the anodal DC contactor.

10, according to each described power-driven operating vehicle power supply system in the claim 4 to 8, it is characterized in that, also comprise first circuit interrupting device in the power system feed circuit of described chassis, described first circuit interrupting device is serially connected with between the positive pole and described first DC contactor of described chassis battery.

11, according to each described power-driven operating vehicle power supply system in the claim 4 to 8, it is characterized in that, also comprise high pressure accessory system feed circuit in the power system feed circuit of described chassis, comprise the high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, the cross-over connection of described high-voltage electric vehicle accessory is between the negative pole of described first DC contactor and chassis battery.

12, power-driven operating vehicle power supply system according to claim 11 is characterized in that, also comprises the annex high-voltage relay that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit.

13, power-driven operating vehicle power supply system according to claim 11 is characterized in that, also comprises the accessory system fuse that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit.

14, power-driven operating vehicle power supply system according to claim 4, it is characterized in that, described operation electric system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor.

15, power-driven operating vehicle power supply system according to claim 14, it is characterized in that, also comprise operation electric machine controller pre-charge circuit in the described operating system feed circuit, the cross-over connection of described operation electric machine controller pre-charge circuit is in the described second DC contactor two ends.

16, power-driven operating vehicle power supply system according to claim 15 is characterized in that, described operation electric machine controller pre-charge circuit comprises series connected successively second pre-charge-relay and second pre-charge resistance.

17, power-driven operating vehicle power supply system according to claim 16 is characterized in that, also is serially connected with the second precharge fuse in the described operation electric machine controller pre-charge circuit.

18, according to each described power-driven operating vehicle power supply system in the claim 4,14 to 17, it is characterized in that, also comprise second fuse in the described operating system feed circuit, described second fuse one is terminated at the anode of described operation electric system, and the other end is connected between described second DC contactor and the anodal DC contactor.

19, according to each described power-driven operating vehicle power supply system in the claim 4,14 to 17, it is characterized in that, also comprise second circuit interrupting device in the described operating system feed circuit, described second circuit interrupting device is serially connected with between the positive pole and described second DC contactor of described operation battery.

20, power-driven operating vehicle power supply system according to claim 1, it is characterized in that, be serially connected with first DC contactor between the positive pole of described chassis battery and the anode of drive motor system, be serially connected with second DC contactor between the anode of the positive pole of described operation battery and operation electric system, be connected by DC contactor between first branch road between the positive pole of described chassis battery and the anode of operation electric system, be connected by DC contactor between second branch road between the anode of the positive pole of described operation battery and drive motor system, the negative pole of described chassis battery is connected with the negative pole of operation battery.

21, power-driven operating vehicle power supply system according to claim 20, it is characterized in that, described drive motor system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor.

22, according to claim 20 or 21 described power-driven operating vehicle power supply systems, it is characterized in that, also comprise first fuse in the power system feed circuit of described chassis, described first fuse one is terminated at the anode of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

23, according to claim 20 or 21 described power-driven operating vehicle power supply systems, it is characterized in that, also comprise first circuit interrupting device in the power system feed circuit of described chassis, described first circuit interrupting device one is terminated at the positive pole of described chassis battery, and the other end is connected between described first DC contactor and first branch road between the DC contactor.

24, power-driven operating vehicle power supply system according to claim 20, it is characterized in that, described operation electric system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor.

25, according to claim 20 or 24 described power-driven operating vehicle power supply systems, it is characterized in that, also comprise second fuse in the described operating system feed circuit, described second fuse one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor.

26, according to claim 20 or 24 described power-driven operating vehicle power supply systems, it is characterized in that, also comprise second circuit interrupting device in the described operating system feed circuit, described second circuit interrupting device one is terminated at the anode of described operation battery, and the other end is connected between described second DC contactor and second branch road between the DC contactor.

27, a kind of the described power-driven operating vehicle power supply system of claim 1 is carried out the method for switching controls, it is characterized in that described method may further comprise the steps:

(2) if do not satisfy, then repeat above-mentioned steps (1);

(4) system judges whether power supply switching command button is pressed;

(5) if not, then return above-mentioned steps (1);

(6) if then system detects the back disconnection DC contactor of stopping;

28, according to claim 27 power-driven operating vehicle power supply system is carried out the method for switching controls, it is characterized in that, describedly judge that whether chassis battery and operation battery satisfy the forceful electric power switching condition, may further comprise the steps:

29, according to claim 28 power-driven operating vehicle power supply system is carried out the method for switching controls, it is characterized in that, described power supply switching between chassis battery and the operation battery and the forceful electric power operational processes that powers on of carrying out may further comprise the steps:

(21) system judges whether the car load key reaches " ON " shelves;

(22) if not, then return above-mentioned steps (1);

(27) if not, then the electric fault warning is hanged down by system, and returns above-mentioned steps (1).

30, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 29, it is characterized in that, be serially connected with first DC contactor between described chassis battery and the drive motor system, be serially connected with second DC contactor between described operation battery and the operation electric system, be connected by anodal DC contactor between the anode of described drive motor system and the anode of operation electric system, be connected by the negative pole DC contactor between the negative terminal of described drive motor system and the negative terminal of operation electric system, described first DC contactor is serially connected with between the anode of the positive pole of described chassis battery and drive motor system, described second DC contactor is serially connected with between the anode of the positive pole of described operation battery and operation electric system, described drive motor system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor, also comprise the drive motor controller pre-charge circuit in the power system feed circuit of described chassis, the cross-over connection of described drive motor controller pre-charge circuit is in the described first DC contactor two ends, and described drive motor controller pre-charge circuit comprises series connected successively first pre-charge-relay and first pre-charge resistance; Described operation electric system comprises operation electric machine controller and operation motor, and the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor; The described chassis battery that carries out may further comprise the steps the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on:

(32) closed described first pre-charge-relay of system;

(34) if not, then repeat above-mentioned steps (33);

(36) if not, then repeat above-mentioned steps (35);

31, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 30, it is characterized in that, also comprise high pressure accessory system feed circuit in the power system feed circuit of described chassis, comprise the high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, the cross-over connection of described high-voltage electric vehicle accessory is between the negative pole of described first DC contactor and chassis battery, also comprise the annex high-voltage relay that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, also comprise following processing in the described step (37):

Closed described annex high-voltage relay.

32, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 29, it is characterized in that, be serially connected with first DC contactor between described chassis battery and the drive motor system, be serially connected with second DC contactor between described operation battery and the operation electric system, be connected by anodal DC contactor between the anode of described drive motor system and the anode of operation electric system, be connected by the negative pole DC contactor between the negative terminal of described drive motor system and the negative terminal of operation electric system, described first DC contactor is serially connected with between the anode of the positive pole of described chassis battery and drive motor system, described second DC contactor is serially connected with between the anode of the positive pole of described operation battery and operation electric system, described drive motor system comprises drive motor controller and drive motor, described drive motor controller cross-over connection is between the negative pole of described first DC contactor and chassis battery, and this drive motor controller is connected with described drive motor; Described operation electric system comprises operation electric machine controller and operation motor, the cross-over connection of described operation electric machine controller is between the negative pole of described second DC contactor and operation battery, and this operation electric machine controller is connected with described operation motor, also comprise operation electric machine controller pre-charge circuit in the described operating system feed circuit, the cross-over connection of described operation electric machine controller pre-charge circuit is in the described second DC contactor two ends, and described operation electric machine controller pre-charge circuit comprises series connected successively second pre-charge-relay and second pre-charge resistance; The described operation battery that carries out may further comprise the steps the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on:

(42) closed described second pre-charge-relay of system;

(44) if not, then repeat above-mentioned steps (43);

(46) if not, then repeat above-mentioned steps (45);

33, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 32, it is characterized in that, also comprise high pressure accessory system feed circuit in the power system feed circuit of described chassis, comprise the high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, the cross-over connection of described high-voltage electric vehicle accessory is between the negative pole of described first DC contactor and chassis battery, also comprise the annex high-voltage relay that is in series with described high-voltage electric vehicle accessory in the described high pressure accessory system feed circuit, also comprise following processing in the described step (47):

Closed described annex high-voltage relay.

34, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 29, it is characterized in that, be serially connected with first DC contactor between the positive pole of described chassis battery and the anode of drive motor system, be serially connected with second DC contactor between the anode of the positive pole of described operation battery and operation electric system, be connected by DC contactor between first branch road between the positive pole of described chassis battery and the anode of operation electric system, be connected by DC contactor between second branch road between the anode of the positive pole of described operation battery and drive motor system, the negative pole of described chassis battery is connected with the negative pole of operation battery; The described chassis battery that carries out may further comprise the steps the switching power supply of drive motor system and operation electric system and the forceful electric power operational processes that powers on:

(51) DC contactor between closed described first branch road of system;

(52) closed described first DC contactor of system;

35, method of power-driven operating vehicle power supply system being carried out switching controls according to claim 29, it is characterized in that, be serially connected with first DC contactor between the positive pole of described chassis battery and the anode of drive motor system, be serially connected with second DC contactor between the anode of the positive pole of described operation battery and operation electric system, be connected by DC contactor between first branch road between the positive pole of described chassis battery and the anode of operation electric system, be connected by DC contactor between second branch road between the anode of the positive pole of described operation battery and drive motor system, the negative pole of described chassis battery is connected with the negative pole of operation battery; The described operation battery that carries out may further comprise the steps switching power supply, precharge and the forceful electric power of drive motor system and the operation electric system operational processes that powers on:

(61) DC contactor between closed described second branch road of system;

(62) closed described second DC contactor of system;

According to each describedly carries out the method for switching controls to power-driven operating vehicle power supply system in the claim 27 to 35, it is characterized in that 36, the described power supply that carries out switches and reports to the police, and is specially:

The flicker of system alarm lamp, simultaneity factor sounds the alarm.

37, according to each describedly carries out the method for switching controls to power-driven operating vehicle power supply system in the claim 27 to 35, it is characterized in that, describedly carry out the indication of forceful electric power handover success, be specially:

System lights forceful electric power handover success indicator lamp.