CN101767541B - Electric automobile power system based on distribution type power battery group and electric automobile - Google Patents
Electric automobile power system based on distribution type power battery group and electric automobile Download PDFInfo
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- CN101767541B CN101767541B CN2008102473926A CN200810247392A CN101767541B CN 101767541 B CN101767541 B CN 101767541B CN 2008102473926 A CN2008102473926 A CN 2008102473926A CN 200810247392 A CN200810247392 A CN 200810247392A CN 101767541 B CN101767541 B CN 101767541B
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Abstract
The invention provides an electric automobile power system based on a distribution type power battery group and an electric automobile. The electric automobile power system comprises a whole automobile integrated controller, a battery management system, at least two driving motors and at least two groups of power battery groups, wherein the power battery groups and the driving motors are in one-to-one correspondence, the battery management system is connected with the power battery groups for controlling the power battery groups, and the whole automobile integrated controller is connected with the battery management system and respective electric control units of the driving motors for collecting and processing signals from the battery management system and each electric control unit, establishing corresponding control strategies and sending out control signals. The invention has the advantages that under the condition of maintaining the unchanged total voltage of the battery group, the electric automobile power system can adopt the low-capacity power battery with the long circulation service life and good consistency, and the power requirements on the battery and the motors can be lowered, so the dynamic property, the reliability, the economical efficiency and the service life of the whole power system can be improved.
Description
Technical field
The present invention relates to power system of electric automobile, specifically, relate to a kind of power system of electric automobile and electronlmobil based on the distributed-power battery pack.
Background technology
Present electronlmobil adopts single motor-driven mostly, because single motor-driven has the shortcoming of the speed of can't taking into account and moment, therefore, many motor-driven electronlmobils just arise at the historic moment, as the patent No. is " 200820030977.8 ", denomination of invention is the Chinese patent of " many motor directly driven electros automobile ", and it has announced a kind of four motor-driven electronlmobils; The patent No. is " 200720093126.3 ", denomination of invention is the Chinese patent of " biaxial four-wheel driven series type mixed power electric vehicle ", application number is " 200610061473.8 ", denomination of invention is the Chinese patent application of " four-wheel driven hybrid power system and method for work ", has all announced a kind of mixed power electric car of Dual-motors Driving.Though above-mentioned how motor-driven electronlmobil can overcome single motor-driven shortcoming, but, because the shared one group of power battery pack of these a plurality of motors, make power battery pack need adopt the electrokinetic cell of high voltage large capcity, yet because technology itself and technological condition, the big more difficulty that it keeps consistency of the capacity of battery is big more, when a plurality of battery strings were unified into the group use, cycle life will be short relatively more.Form the cycle number and the consistency problem of Battery pack group, will influence dynamic property, reliability, economy and the service life of car load power system.Therefore, the power battery pack of how motor-driven power system of electric automobile reasonably being arranged, to improve dynamic property, reliability, economy and the service life of car load power system, is current electronlmobil and power system problem demanding prompt solution thereof.
Summary of the invention
The objective of the invention is dynamic property, reliability, economy and service life in order to improve many motor driven electric cars power system, provide a kind of based on the distributed-power battery pack power system of electric automobile and based on the electronlmobil of distributed-power battery pack.
To achieve these goals, the present invention at first provides a kind of power system of electric automobile based on the distributed-power battery pack, comprises car load general controller, battery management system and at least two drive motor, also comprises at least two group power battery pack, wherein,
Described at least two group power battery pack are corresponding one by one with described at least two drive motor;
Described battery management system is connected with described two group power battery pack at least, with control at least two group power battery pack;
Described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor at least, it is used to gather, handle the signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described battery management system is one, described at least two group power battery pack connect this battery management system jointly.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described battery management system number is identical with the group number of power battery pack, and described at least two group power battery pack connect each self-corresponding battery management system respectively.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor by the CAN bus at least, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is two, and described two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is two, and described two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is two, and described two drive motor are connected with propons, the back axle of electronlmobil by a change-speed box respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is three, wherein a drive motor is connected with the back axle of electronlmobil by a change-speed box, other two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, power battery pack is three groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is three, wherein a drive motor is connected with the propons of electronlmobil by a change-speed box, other two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is three groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
Above-mentioned power system of electric automobile based on the distributed-power battery pack, wherein, described drive motor is four, wherein two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, other two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is four groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
In order better to realize above-mentioned purpose, the present invention also provides a kind of electronlmobil based on the distributed-power battery pack, comprises power system, and described power system comprises car load general controller, battery management system, at least two drive motor and at least two group power battery pack, wherein
Described at least two group power battery pack are corresponding one by one with described at least two drive motor;
Described battery management system is connected with described two group power battery pack at least, with control at least two group power battery pack;
Described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor at least, it is used to gather, handle the signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
Beneficial functional of the present invention is, keeping under the assembled battery total voltage unmodified situation, Electric Vehicle power system can be selected the low capacity electrokinetic cell of length, high conformity of cycle life for use, thus the service life that prolongs the vehicle continual mileage and improve automobile dynamic system; Power battery pack adopts distributed frame, can reduce the power demand of whole power system to battery, motor, thereby improves the dynamic property and the economy of electric automobile whole power system; A plurality of power battery pack are shared a battery management system, and the car load general controller provides energy according to car load demand power control power battery pack is independent to each self-corresponding drive motor, thereby it is compact more that whole power system is arranged.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the structured flowchart of the power system of electric automobile based on the distributed-power battery pack of the present invention;
Fig. 2 is a double-motor before driving power system of electric automobile scheme drawing;
Fig. 3 is a double-motor rear drive power system of electric automobile scheme drawing;
Fig. 4 is front and back single motor twin shaft four-wheel driving electric vehicle power system scheme drawings;
Fig. 5 is preceding double-motor, the single motor four-wheel driving electric vehicle power system scheme drawing in back;
Fig. 6 is preceding single motor, back double-motor four-wheel driving electric vehicle power system scheme drawing;
Fig. 7 is front and back double-motor four-wheel driving electric vehicle power system scheme drawings.
Wherein, Reference numeral
1 battery management system, 2 car load general controller
3 drive motor ECU, 4 drive motor
5 vehicle bridge or wheel
51 off front wheel, 52 the near front wheels
53 off hind wheels, 54 left rear wheels
55 back axles, 56 propons
6 power battery pack, 7 change-speed boxs
The specific embodiment
Below in conjunction with accompanying drawing the power system of electric automobile based on the distributed-power battery pack of the present invention is done concrete description:
Consult Fig. 1, structured flowchart for the power system of electric automobile based on the distributed-power battery pack of the present invention, as can be seen from the figure, power system of electric automobile based on the distributed-power battery pack of the present invention, comprise battery management system 1, car load general controller 2, drive motor 4 and power battery pack 6, at least two of the numbers of drive motor and power battery pack (shown in Fig. 1 is two), wherein, power battery pack 6 is corresponding one by one with drive motor 4, so that be driving motor supplies power, battery management system 1 is connected with power battery pack 6, with the control power battery pack, car load general controller 2 and battery management system 1, and the ECU (Electrical Control Unit) separately of drive motor 4 (hereinafter to be referred as drive motor ECU) 3 connects, be used for gathering, processing is from the signal of battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.In order to save resource, battery management system 1 is preferably one, at least two group power battery pack connect this battery management system 1 jointly, certainly, the number of battery management system is not limited to one, also can be and the cooresponding number of power battery pack, a plurality of power battery pack connect each self-corresponding battery management system respectively.
Come the present invention is done further detailed description below by a plurality of embodiment:
First embodiment
See also Fig. 2, be double-motor before driving power system of electric automobile scheme drawing, in this embodiment, drive motor 4 is two, and two drive motor are connected with the near front wheel 52, the off front wheel 51 of electronlmobil respectively, cooresponding, power battery pack is two groups, and every group of power battery pack is connected with cooresponding drive motor 4 by each self-corresponding drive motor ECU.Preferred version as present embodiment, battery management system of two groups of common connections of power battery pack, car load general controller 2 is connected with the ECU separately of battery management system 1 and two drive motor by the CAN bus, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.Wherein, the energy Flow direction of the power system of electric automobile of this embodiment is an arrow direction among the figure.
Present embodiment is applicable to that the little or vehicle ' demand power of vehicle ' resistance hour, two drive motor drive the near front wheel 52 and off front wheel 51 under corresponding power battery pack effect, thus driving rear axle 55, drive left rear wheel 54 and off hind wheel 55 by back axle 55 again, so that the vehicle smooth running.
Second embodiment
See also Fig. 3, be double-motor before driving power system of electric automobile scheme drawing, in this embodiment, drive motor 4 is two, and two drive motor are connected with left rear wheel 54, the off hind wheel 53 of electronlmobil respectively, cooresponding, power battery pack is two groups, and every group of power battery pack is connected with cooresponding drive motor 4 by each self-corresponding drive motor ECU.Preferred version as present embodiment, battery management system of two groups of common connections of power battery pack, car load general controller 2 is connected with the ECU separately of battery management system 1 and two drive motor by the CAN bus, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.Wherein, the energy Flow direction of the power system of electric automobile of this embodiment is an arrow direction among the figure.
Present embodiment is applicable to that the little or vehicle ' demand power of vehicle ' resistance hour, two drive motor drive left rear wheel 54 and off hind wheel 53 under corresponding power battery pack effect, thereby drive propons 56, drive the near front wheel 52 and off front wheel 51 by propons 56 again, so that the vehicle smooth running.
The 3rd embodiment
See also Fig. 4, be front and back single motor twin shaft four-wheel driving electric vehicle power system scheme drawing, in this embodiment, drive motor 4 is two, and two drive motor are connected with propons 56, the back axle 55 of electronlmobil by a change-speed box 7 respectively, cooresponding, power battery pack is two groups, and every group of power battery pack is connected with each self-corresponding drive motor ECU.Preferred version as present embodiment, two groups of power battery pack connect battery management system 1 jointly, car load general controller 2 is connected with the ECU separately of battery management system 7 and two drive motor by the CAN bus, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.Wherein, the energy Flow direction of the power system of electric automobile of this embodiment is an arrow direction among the figure.
Present embodiment is applicable to when the big or vehicle ' demand power of vehicle ' resistance is big, two drive motor are under corresponding power battery pack effect, drive propons 56 and back axle 55 simultaneously, thereby drive and propons 56 bonded assembly the near front wheels 52 and off front wheel 51, and driving and back axle 55 bonded assembly left rear wheels 54 and off hind wheel 53, so that the vehicle smooth running, that is, the automobile dynamic system of present embodiment adopts four wheel drive.
The 4th embodiment
See also Fig. 5, be preceding double-motor, the single motor four-wheel driving electric vehicle power system scheme drawing in back.In this embodiment, drive motor 4 is three, wherein a drive motor is connected with the back axle 55 of electronlmobil by change-speed box 7, other two drive motor are connected with the near front wheel 52, the off front wheel 51 of electronlmobil respectively, cooresponding, power battery pack is three groups, and every group of power battery pack is connected with each self-corresponding drive motor ECU.Preferred version as present embodiment, three groups of power battery pack connect battery management system 1 jointly, car load general controller 2 is connected with the ECU separately of battery management system 1 and three drive motor by the CAN bus, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.Wherein, the energy Flow direction of the power system of electric automobile of this embodiment is an arrow direction among the figure.
The automobile dynamic system of present embodiment adopts four wheel drive, also is applicable to the big or bigger situation of vehicle ' demand power of vehicle ' resistance.
The 5th embodiment
See also Fig. 6, be preceding single motor, back double-motor four-wheel driving electric vehicle power system scheme drawing.The structure of this embodiment and the 4th example structure are roughly the same, and different is, a drive motor is connected with the propons 56 of electronlmobil by change-speed box 7, and other two drive motor are connected with left rear wheel 54, the off hind wheel 53 of electronlmobil respectively.
The automobile dynamic system of present embodiment adopts four wheel drive, also is applicable to the big or bigger situation of vehicle ' demand power of vehicle ' resistance.
The 6th embodiment
See also Fig. 7, be front and back double-motor four-wheel driving electric vehicle power system scheme drawing.In this embodiment, drive motor 4 is four, wherein two drive motor are connected with the near front wheel 52, the off front wheel 51 of electronlmobil respectively, other two drive motor are connected with left rear wheel 54, the off hind wheel 53 of electronlmobil respectively, cooresponding, power battery pack is four groups, and every group of power battery pack is connected with each self-corresponding drive motor ECU.Preferred version as present embodiment, four groups of power battery pack connect battery management system 1 jointly, car load general controller 2 is connected with the ECU separately of battery management system 1 and four drive motor by the CAN bus, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.Wherein, the energy Flow direction of the power system of electric automobile of this embodiment is an arrow direction among the figure.
The automobile dynamic system of present embodiment adopts four wheel drive, also is applicable to the big or bigger situation of vehicle ' demand power of vehicle ' resistance.
From above-mentioned a plurality of embodiment as can be seen, automobile dynamic system of the present invention has following characteristics:
1, power battery pack adopts distributed frame, is keeping under the assembled battery total voltage unmodified situation, can select the low capacity electrokinetic cell of length, high conformity of cycle life for use, thus the service life that prolongs the vehicle continual mileage and improve automobile dynamic system; Power battery pack adopts distributed frame, also can reduce the power demand of whole power system to battery, motor, thereby improves the dynamic property and the economy of electric automobile whole power system.
2, shared battery management system of a plurality of power battery pack, and car load general controller provides energy according to car load demand power control power battery pack is independent to each self-corresponding drive motor, thereby it is compact more that whole power system is arranged.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (11)
1. the power system of electric automobile based on the distributed-power battery pack comprises car load general controller, battery management system and at least two drive motor, it is characterized in that, also comprises at least two group power battery pack, wherein,
Described at least two group power battery pack are corresponding one by one with described at least two drive motor;
Described battery management system is connected with described two group power battery pack at least, with control at least two group power battery pack;
Described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor at least, it is used to gather, handle the signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
2. the power system of electric automobile based on the distributed-power battery pack according to claim 1 is characterized in that, described battery management system is one, and described at least two group power battery pack connect this battery management system jointly.
3. the power system of electric automobile based on the distributed-power battery pack according to claim 1, it is characterized in that, described battery management system number is identical with the group number of power battery pack, and described at least two group power battery pack connect a battery management system respectively.
4. according to claim 1,2 or 3 described power system of electric automobile based on the distributed-power battery pack, it is characterized in that, described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor by the CAN bus at least, to be used to gather, handle signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
5. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is two, and described two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
6. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is two, and described two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
7. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is two, and described two drive motor are connected with propons, the back axle of electronlmobil by a change-speed box respectively, power battery pack is two groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
8. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is three, wherein a drive motor is connected with the back axle of electronlmobil by a change-speed box, other two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, power battery pack is three groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
9. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is three, wherein a drive motor is connected with the propons of electronlmobil by a change-speed box, other two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is three groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
10. the power system of electric automobile based on the distributed-power battery pack according to claim 4, it is characterized in that, described drive motor is four, wherein two drive motor are connected with the near front wheel, the off front wheel of electronlmobil respectively, other two drive motor are connected with left rear wheel, the off hind wheel of electronlmobil respectively, power battery pack is four groups, and every group of power battery pack is connected with the ECU (Electrical Control Unit) of each self-corresponding drive motor.
11. the electronlmobil based on the distributed-power battery pack comprises power system, it is characterized in that, described power system comprises car load general controller, battery management system, at least two drive motor and at least two group power battery pack, wherein,
Described at least two group power battery pack are corresponding one by one with described at least two drive motor;
Described battery management system is connected with described two group power battery pack at least, with control at least two group power battery pack;
Described car load general controller is connected with the ECU (Electrical Control Unit) separately of described battery management system and described two drive motor at least, it is used to gather, handle the signal from battery management system and each ECU (Electrical Control Unit), formulate corresponding control strategies, send control signal.
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| CN102774292A (en) * | 2012-08-20 | 2012-11-14 | 天津市松正电动汽车技术股份有限公司 | Dual-motor drive system |
| CN103072647B (en) * | 2013-01-29 | 2015-06-17 | 柳州市医疗设备厂 | Electric car |
| EP3323664B1 (en) * | 2016-11-16 | 2020-01-01 | Nio Nextev Limited | An electric vehicle controller |
| CN108808754B (en) | 2017-05-03 | 2020-10-16 | 华为技术有限公司 | Distributed battery, battery control method and electric automobile |
| CN112319229B (en) * | 2020-11-06 | 2022-03-18 | 厦门金龙汽车新能源科技有限公司 | Power-on control method based on electric motor coach dual-power driving system |
| CN114024008B (en) * | 2021-11-04 | 2024-02-20 | 上海重塑能源科技有限公司 | Power management integrated device of multi-stack fuel cell system and working method thereof |
| WO2023230995A1 (en) * | 2022-06-02 | 2023-12-07 | 宁德时代新能源科技股份有限公司 | Battery regulation system, method and electric apparatus using same |
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