CN203543706U - Power supply system for electric vehicle - Google Patents

Power supply system for electric vehicle Download PDF

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Publication number
CN203543706U
CN203543706U CN201320427925.5U CN201320427925U CN203543706U CN 203543706 U CN203543706 U CN 203543706U CN 201320427925 U CN201320427925 U CN 201320427925U CN 203543706 U CN203543706 U CN 203543706U
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China
Prior art keywords
interface
power supply
power
accessory equipment
electrical source
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Expired - Fee Related
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CN201320427925.5U
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Chinese (zh)
Inventor
汪波
叶开志
周卫明
汪纯
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SUZHOU LAISAI TRAM TECHNOLOGY CO LTD
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SUZHOU LAISAI TRAM TECHNOLOGY CO LTD
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Abstract

The utility model relates to a power supply system for an electric vehicle. The power supply system for the electric vehicle comprises a power supply, an energy storage power supply and a high-voltage power distribution device; the power supply is used for supplying power for a driving system; the power supply is provided with a first charging interface which is connected with a first ground charging device; the energy storage power supply is used for supplying power for the power supply through a DC/DC (Direct Current to Direct Current) converter and absorbing the braking feedback energy of the driving system simultaneously; the energy storage power supply is provided with a second charging interface which is connected with a second ground charging device; the high-voltage power distribution device comprises a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface and an eighth interface; the first interface is connected with the energy storage power supply through a DC/DC circuit; the second interface is connected with a low-voltage auxiliary device through the DC/DC circuit; the third interface is connected with a high-voltage auxiliary device; the fourth interface and the fifth interface are connected with the power supply; the sixth interface is connected with a power system; the seventh interface is connected with a braking feedback circuit of the power system. According to the power supply system for the electric vehicle, the capacity of the power supply can be effectively increased, meanwhile the power supply can be protected, and the service life of the power supply can be effectively extended.

Description

A kind of electric vehicle power-supply system
Technical field
The utility model relates to electric automobiles, relates in particular to a kind of electric vehicle power-supply system.
Background technology
Electronlmobil refers to take vehicle power as power, travels with power wheel, meets the vehicle of arteries of communication, legislative control on safety requirements.Due to less to the relative orthodox car of environmental concerns, its prospect is extensively had an optimistic view of.
A key factor of restriction battery-driven car widespread use is the finite capacity due to vehicle power at present, makes its travelled distance short; Another factor be the electric weight at vehicle power exhausted after, need the charging of long period just can normally use.
Current adopted dual power supply technology is on the basis of main power source, to increase a super power supply accessory feed, when accelerating or climbing for vehicle, assists main power source to power to motor.Super capacitor auxiliary power system utilizes the advantage that super capacitor power density is large, when battery-driven car accelerates, can assist main power source power supply with very large discharge power supply, and the acceleration capability of battery-driven car is made moderate progress.This dual power supply technology, at the capacity that has to a certain degree increased vehicle power, has been improved the acceleration capability of battery-driven car, but after exhausted for the electric weight at vehicle-mounted main power source, needs the charging of long period just can normally use this shortcoming, there is no the improvement of correspondence.
Chinese invention patent CN1304217C has disclosed a kind of power supply that supplies power to CD-ROM drive motor, and wherein, main power source is front, and auxiliary power supply is rear, and auxiliary power supply is motor power supply.It is applicable to power range and changes the high-speed electric expreess locomotive of adjustable speed greatly, i.e. the manned vehicle use of the speed sudden turn of events, therefore what utilize is the wide in range feature of power type battery horsepower output.In addition, in the technical scheme that the document discloses, the effect of front power supply is mainly the large energy storage capacity with disposable charging, come for a long time to rear power source charges, and be main power source, service life is relatively short.In addition, the connection of two power supplys in this patented technology scheme only has a kind of mode of series connection, to being responded by the polytropy power demands of drive machines, thereby causes by drive machines under power in some cases.
Chinese invention patent CN1187208C discloses a kind of battery-driven car super capacitor auxiliary power system, pass between two power supplys in the technical scheme that the document discloses is to work alone separately, the vehicle start stage (for example, in 20 kilometers/hour of speed per hours), use power-type power supply to work independently; Normally the travelling the phase more than 20 kilometers/hour at velocity-stabilization, is used main power source power supply, and this is the conventional vehicle power of current electricity mixed power passenger vehicle, existing problems when different voltage platforms switch in use
Summary of the invention
The technical matters that the utility model mainly solves is to provide a kind of electric vehicle power-supply system with relatively stable power low speed, can in vehicle traveling process, to electrical source of power, continue charging, and can charge in a large number at short notice.
For solving the problems of the technologies described above, a kind of electric vehicle power-supply system that the utility model provides, comprising:
One electrical source of power, can be to drive system and accessory equipment power supply; In described electrical source of power, there is the first charging inlet, be connected with the first ground charging unit;
One accumulation power supply, can charge to described electrical source of power, or to drive system and accessory equipment power supply, absorbs the feedback braking energy of described drive system simultaneously; On described accumulation power supply, there is the second charging inlet being connected with the second ground charging unit;
One high voltage distribution installation, is connected with described electrical source of power, accumulation power supply, accessory equipment and drive system, by the interface of controlling in described high voltage distribution installation, is connected or is disconnected, and controls the work of described electrical source of power and accumulation power supply;
Described high voltage distribution installation comprises first interface, the second interface, the 3rd interface, the 4th interface, the 5th interface, the 6th interface, the 7th interface and the 8th interface, described first interface is connected with described accumulation power supply by DC/DC circuit, described the second interface is connected with described low pressure accessory equipment by DC/DC circuit, described the 3rd interface is connected with described high pressure accessory equipment, described the 4th interface is connected with described electrical source of power by protective circuit, described the 5th interface is connected with described electrical source of power, described the 6th interface is connected with described power system, the feedback braking circuit of described the 7th interface and described power system is connected, described the 8th interface is connected with described accumulation power supply.
The defined electric vehicle power-supply system of above technical scheme can make full use of the feature that energy storage capacity is large, charge-discharge magnification is less of electrical source of power; And accumulation power supply utilization repeatedly, the charging of utmost point short time, gradation is auxiliary load or electrical source of power charging, to extend the once production time in transit after exogenous charging of main power source, and, utilize repeatedly the activation of brachymedial period to main power source, extend its life-span.In addition, the defined electric vehicle power-supply system of above technical scheme can solve the problem that different voltage platform power supplys that existing two power supplys work alone in the use of system bring when switching, no matter starting phase or normally travel the phase, be to be all that main load (motor) is powered with main power source, thereby improve reliability.Accessory feed is preferably auxiliary load (air-conditioning, servo-steering, electric inflation pump, blower fan etc.) power supply, remains as main power source charging.In the mode of braking energy feedback, in system of the present utility model, it is upper that feedback energy is preferentially added to main power source (energy type) by acceptable main power source part, and residue is added on auxiliary power supply (power-type).Main power source obtains the activation of suitable little energy and mends electricity like this, longer service life, and capacity usage ratio is also higher.
In preferred embodiment of the utility model, described accessory equipment comprises the high pressure accessory equipment and the low pressure accessory equipment that are connected with described high voltage distribution installation respectively.
In preferred embodiment of the utility model, described electric vehicle power-supply system is by connection and the disconnection of high voltage distribution installation described in controller control, thereby realizes multiple mode of operation;
The first mode of operation, described first interface, the second interface, the 3rd interface and the 4th interface are communicated with, described the 5th interface and the 6th interface are communicated with, realize the charging of described accumulation power supply to high pressure accessory equipment and the power supply of low pressure accessory equipment and electrical source of power, described electrical source of power is powered to drive motor;
The second mode of operation, described the 5th interface, the 6th interface, the second interface and the 3rd interface are communicated with, and have realized electrical source of power to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 3rd mode of operation, described the 6th interface, first interface, the second interface, the 3rd interface and the 5th interface are communicated with, and have realized the parallel connection of accumulation power supply and electrical source of power, and jointly to high pressure accessory equipment and the power supply of low pressure accessory equipment;
The 4th mode of operation, described first interface, described the second interface, described the 3rd interface and described the 6th interface are communicated with, and realize accumulation power supply separately to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 5th mode of operation, described the 7th interface and the connection of the 4th interface realize feedback braking electrical source of power are charged;
The 6th mode of operation, described the 7th interface and the connection of the 8th interface realize feedback braking accumulation power supply are charged;
The 7th mode of operation, described the 7th interface, the 4th interface and the connection of the 8th interface realize feedback braking accumulation power supply and electrical source of power are charged simultaneously.
The beneficial effects of the utility model are: the utility model electric vehicle power-supply system, increase an accumulation power supply, can in vehicle traveling process, to electrical source of power, continue charging on the one hand, effectively increase the capacity of electrical source of power, can protect electrical source of power effectively to extend the life-span of electrical source of power simultaneously; The characteristic of accumulation power supply can be charged at short notice in a large number on the other hand, is specially adapted to the vehicle that carries out short time stop as the meeting timing fixed point of bus and so on.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric vehicle power-supply system one preferred embodiment;
Fig. 2 is the structural representation of another preferred embodiment of the utility model electric vehicle power-supply system.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection domain of the present utility model is made to more explicit defining.
Refer to Fig. 1, the utility model embodiment comprises:
A kind of electric vehicle power-supply system, comprising: two power supplys of electrical source of power and accumulation power supply.
Described electrical source of power is connected with drive system, accessory equipment, mainly to described drive system power supply; In described electrical source of power, also have the first charging inlet, can be connected with ground charging unit 1; Described electrical source of power is energy type battery, and described energy type battery has larger capacity conventionally, can provide more lasting energy resource supply for consumer.
Described accumulation power supply by DC/DC changer, to described electrical source of power charging, absorbs the feedback braking energy of described drive system simultaneously; On described accumulation power supply, there is the second charging inlet, be connected with ground charging unit 2.Described accumulation power supply is super capacitor or power type battery or Ni-MH battery.Be particularly preferably super capacitor.Described accumulation power supply is by DC/DC changer, is connected with the accessory equipment such as on-board air conditioner, to described accessory equipment, powers.Described the first change-over switch is installed in the supply line of accessory equipment, by described accumulation power supply, to described accessory equipment, powered under normal circumstances, when the dump energy of accumulation power supply is not enough to provide accessory equipment to use, described the first change-over switch switches to the state to described accessory equipment power supply by described electrical source of power.
Described accumulation power supply also can be directly to described drive system power supply, quick change-over switch is installed in the supply line of described drive system, when drive system needs high-power kinetic energy, such as the state of automobile starting climbing, start described quick change-over switch, described quick change-over switch is switched fast between accumulation power supply and electrical source of power, and described accumulation power supply and described electrical source of power are powered to drive system simultaneously.
The utility model electric vehicle power-supply system, the controlled management of all charge and discharge process.The capacity of described accumulation power supply is less than the capacity of described electrical source of power, mainly leans on electrical source of power energy discharge to drive system.Preferably, the capacity ratio of the capacity of described accumulation power supply and described electrical source of power is 1:2,1:3 or 1:4.
Preferably, between described electrical source of power and described accumulation power supply, be also connected with and prevent reverse battery charge circuit, prevent that described electrical source of power is to described accumulation power supply reverse charging.
Described super capacitor mainly contains following advantage: 1) charging rate is fast, charges and can reach the more than 95% of its rated capacity in 10 seconds~10 minutes; (2) service life cycle is long, and degree of depth charge and discharge cycles access times can reach 1 ~ 500,000 time, there is no " memory effect "; (3) large current discharging capability is superpower, and energy conversion efficiency is high, and process loss is little, large current energy cycle efficiency >=90%; (4) power density is high, can reach 300W/KG ~ 5000W/KG, is equivalent to 5 ~ 10 times of battery; (5) product raw MAT'L forms, produces, uses, stores and disassembles process and all do not pollute, and is desirable environmental protection power supply; (6) discharge and recharge circuit simple, without the such charge circuit of rechargeable battery, safety factor is high, uses for a long time non-maintaining; (7) ultralow temperature characteristic is good, and range of temperatures is wide-40 ℃~+ 70 ℃; (8) easy to detect, dump energy can directly be read; (9) capacity is large, the common 0.1F--1000F of range of capacity.
Refer to Fig. 2, a kind of electric vehicle power-supply system, comprising:
One electrical source of power, can be to drive system and accessory equipment power supply; In described electrical source of power, there is the first charging inlet, be connected with the first ground charging unit;
One accumulation power supply, can charge to described electrical source of power, or to drive system and accessory equipment power supply, absorbs the feedback braking energy of described drive system simultaneously; On described accumulation power supply, there is the second charging inlet being connected with the second ground charging unit;
One high voltage distribution installation, is connected with described electrical source of power, accumulation power supply, accessory equipment and drive system, by the interface of controlling in described high voltage distribution installation, is connected or is disconnected, and controls the work of described electrical source of power and accumulation power supply.
Described accessory equipment comprises the high pressure accessory equipment and the low pressure accessory equipment that are connected with described high voltage distribution installation respectively.
Described high voltage distribution installation comprises first interface, the second interface, the 3rd interface, the 4th interface, the 5th interface, the 6th interface, the 7th interface and the 8th interface, described first interface is connected with described accumulation power supply by DC/DC circuit, described the second interface is connected with described low pressure accessory equipment by DC/DC circuit, described the 3rd interface is connected with described high pressure accessory equipment, described the 4th interface is connected with described electrical source of power by protective circuit, described the 5th interface is connected with described electrical source of power, described the 6th interface is connected with described power system, the feedback braking circuit of described the 7th interface and described power system is connected, described the 8th interface is connected with described accumulation power supply.
Described electric vehicle power-supply system is by connection and the disconnection of high voltage distribution installation described in controller control, thereby realizes multiple mode of operation;
The first mode of operation, described first interface, the second interface, the 3rd interface and the 4th interface are communicated with, described the 5th interface and the 6th interface are communicated with, realize the charging of described accumulation power supply to high pressure accessory equipment and the power supply of low pressure accessory equipment and electrical source of power, described electrical source of power is powered to drive motor;
The second mode of operation, described the 5th interface, the 6th interface, the second interface and the 3rd interface are communicated with, and have realized electrical source of power to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 3rd mode of operation, described the 6th interface, first interface, the second interface, the 3rd interface and the 5th interface are communicated with, and have realized the parallel connection of accumulation power supply and electrical source of power, and jointly to high pressure accessory equipment and the power supply of low pressure accessory equipment;
The 4th mode of operation, described first interface, described the second interface, described the 3rd interface and described the 6th interface are communicated with, and realize accumulation power supply separately to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 5th mode of operation, described the 7th interface and the connection of the 4th interface realize feedback braking electrical source of power are charged;
The 6th mode of operation, described the 7th interface and the connection of the 8th interface realize feedback braking accumulation power supply are charged;
The 7th mode of operation, described the 7th interface, the 4th interface and the connection of the 8th interface realize feedback braking accumulation power supply and electrical source of power are charged simultaneously.
The utility model electric vehicle power-supply system, mainly utilizes that super capacitor charging rate is fast, the long and advantage capacious of service life cycle, and by the velocity of discharge of DC/DC convertor controls super capacitor, realizes and fill soon the effect of putting slowly.Be specially adapted to the vehicle that carries out short time stop as the meeting timing fixed point of bus and so on, between short time alongside time, the accumulation power supply that super capacitor is formed charges, and charges about 10 minutes and just can reach the more than 95% of its rated capacity.In vehicle traveling process, described accumulation power supply continues charging to electrical source of power, effectively increases the capacity of electrical source of power, increases the driving range of automobile, can protect electrical source of power simultaneously, effectively extends the life-span of electrical source of power.
In vehicle traveling process, described accumulation power supply absorbs the feedback braking energy of described drive system, increases electric energy.When the voltage of described accumulation power supply is less than the voltage of electrical source of power, for preventing the reverse charging of electrical source of power to accumulation power supply, can be by preventing that reverse battery charge circuit from realizing.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification sheets and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (3)

1. an electric vehicle power-supply system, is characterized in that, comprising:
One electrical source of power, can be to drive system and accessory equipment power supply; In described electrical source of power, there is the first charging inlet, be connected with the first ground charging unit;
One accumulation power supply, can charge to described electrical source of power, or to drive system and accessory equipment power supply, absorbs the feedback braking energy of described drive system simultaneously; On described accumulation power supply, there is the second charging inlet being connected with the second ground charging unit;
One high voltage distribution installation, is connected with described electrical source of power, accumulation power supply, accessory equipment and drive system, by the interface of controlling in described high voltage distribution installation, is connected or is disconnected, and controls the work of described electrical source of power and accumulation power supply;
Described high voltage distribution installation comprises first interface, the second interface, the 3rd interface, the 4th interface, the 5th interface, the 6th interface, the 7th interface and the 8th interface, described first interface is connected with described accumulation power supply by DC/DC circuit, described the second interface is connected with a low pressure accessory equipment by DC/DC circuit, described the 3rd interface is connected with described high pressure accessory equipment, described the 4th interface is connected with described electrical source of power by protective circuit, described the 5th interface is connected with described electrical source of power, described the 6th interface is connected with described power system, the feedback braking circuit of described the 7th interface and described power system is connected, described the 8th interface is connected with described accumulation power supply.
2. electric vehicle power-supply system according to claim 1, is characterized in that, described accessory equipment comprises the high pressure accessory equipment and the low pressure accessory equipment that are connected with described high voltage distribution installation respectively.
3. electric vehicle power-supply system according to claim 1, is characterized in that, described electric vehicle power-supply system is by connection and the disconnection of high voltage distribution installation described in controller control, thereby realizes multiple mode of operation;
The first mode of operation, described first interface, the second interface, the 3rd interface and the 4th interface are communicated with, described the 5th interface and the 6th interface are communicated with, realize the charging of described accumulation power supply to high pressure accessory equipment and the power supply of low pressure accessory equipment and electrical source of power, described electrical source of power is powered to drive motor;
The second mode of operation, described the 5th interface, the 6th interface, the second interface and the 3rd interface are communicated with, and have realized electrical source of power to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 3rd mode of operation, described the 6th interface, first interface, the second interface, the 3rd interface and the 5th interface are communicated with, and have realized the parallel connection of accumulation power supply and electrical source of power, and jointly to high pressure accessory equipment and the power supply of low pressure accessory equipment;
The 4th mode of operation, described first interface, described the second interface, described the 3rd interface and described the 6th interface are communicated with, and realize accumulation power supply separately to high pressure accessory equipment and low pressure accessory equipment and drive motor power supply;
The 5th mode of operation, described the 7th interface and the connection of the 4th interface realize feedback braking electrical source of power are charged;
The 6th mode of operation, described the 7th interface and the connection of the 8th interface realize feedback braking accumulation power supply are charged;
The 7th mode of operation, described the 7th interface, the 4th interface and the connection of the 8th interface realize feedback braking accumulation power supply and electrical source of power are charged simultaneously.
CN201320427925.5U 2013-07-18 2013-07-18 Power supply system for electric vehicle Expired - Fee Related CN203543706U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103507654A (en) * 2013-07-18 2014-01-15 苏州市莱赛电车技术有限公司 Power supply system for electric vehicle
CN105818702A (en) * 2016-03-18 2016-08-03 北京新能源汽车股份有限公司 Power supply system and method for new energy automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103507654A (en) * 2013-07-18 2014-01-15 苏州市莱赛电车技术有限公司 Power supply system for electric vehicle
WO2015007126A1 (en) * 2013-07-18 2015-01-22 苏州市莱赛电车技术有限公司 Power supply system for electric vehicle
CN105818702A (en) * 2016-03-18 2016-08-03 北京新能源汽车股份有限公司 Power supply system and method for new energy automobile

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Granted publication date: 20140416

Termination date: 20210718