CN212219920U - Four-drive motor system of hydrogen fuel cell electric automobile - Google Patents
Four-drive motor system of hydrogen fuel cell electric automobile Download PDFInfo
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- CN212219920U CN212219920U CN202020378369.7U CN202020378369U CN212219920U CN 212219920 U CN212219920 U CN 212219920U CN 202020378369 U CN202020378369 U CN 202020378369U CN 212219920 U CN212219920 U CN 212219920U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The utility model discloses a four-drive motor system of a hydrogen fuel cell electric vehicle, which realizes the double-motor drive of a front axle and a rear axle in a hydrogen fuel cell electric vehicle, and the double-motor drive can simultaneously work in the full acceleration process of the vehicle by matching the power of a battery and a motor, so that the total power is improved; when the vehicle runs under normal working conditions, the vehicle can work by a single motor. Therefore, the motor can work in a high-efficiency interval frequently, and meanwhile, the peak capacity of the battery can be completely released, so that the performance and the endurance are considered.
Description
Technical Field
The utility model belongs to new energy automobile especially matches the field to hydrogen fuel cell car power driving system's high mobility, relates to a hydrogen fuel cell electric automobile four-wheel drive motor system.
Background
The society vigorously pushes environment-friendly new energy automobiles, including hydrogen fuel cell electric automobiles, which use hydrogen fuel cells as power providers, match with auxiliary energy systems, and drive wheels through driving motors to realize vehicle movement.
In order to achieve the high level of dynamic performance of the electric automobile, a single motor with a large power reserve is generally used for achieving vehicle driving, and the single motor driving cannot give consideration to performance, high maneuverability and endurance.
Under the condition that the battery capacity is not changed, if the power performance needs to be improved, the peak power of the motor reserve needs to be larger than that of the battery, so that the battery capacity can be fully exerted in the acceleration and deceleration process. However, under normal working conditions, the power of the motor is much more surplus, so that the efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that the spatial layout to current hydrogen fuel cell is limited, and the mileage is short, dynamic property is weak, the reliability is not high and the defect of high mobility demand is not satisfied, provides a hydrogen fuel cell electric automobile four-wheel drive motor system.
The utility model provides a solve its technical problem, provide a hydrogen fuel cell electric automobile dual drive motor system, contain: VCU (vehicle Control Unit), a middle hydrogen tank, a rear hydrogen tank, two driving motor systems and a fuel cell engine assembly;
the middle hydrogen tank is positioned in the middle of the hydrogen fuel cell electric automobile in the front-back direction, and the rear hydrogen tank is positioned at the rear of the hydrogen fuel cell electric automobile in the front-back direction;
the two driving motor systems are a front driving motor system and a rear driving motor system, the front driving motor system is integrated with a front motor, a front gearbox and a front motor controller, and the rear driving motor system is integrated with a rear motor, a rear gearbox and a rear motor controller; the front motor is arranged at the front shaft, and the rear motor is arranged at the rear shaft; the output shaft of the front motor is connected with the input shaft of the front gearbox, the output shaft of the front gearbox is used for connecting the front left tire and the front right tire, the output shaft of the rear motor is connected with the input shaft of the rear gearbox, and the output shaft of the rear gearbox is used for connecting the rear left tire and the rear right tire; the front gearbox is provided with a reduction gearbox, the forward direction of the headstock is taken as the forward direction, and the front gearbox is arranged close to the right side of the front motor;
the fuel cell engine assembly is positioned at the front part of the hydrogen fuel cell electric automobile in the front-back direction, provides working electric energy for the two driving motor systems and other loads of the hydrogen fuel cell electric automobile, comprises a galvanic pile and a controller for controlling the working state of the galvanic pile, and is respectively connected with the middle hydrogen tank and the rear hydrogen tank to obtain hydrogen for working; the front driving motor system is fixed behind and below the fuel cell engine assembly, and the rear driving motor system is positioned between the middle hydrogen tank and the rear hydrogen tank;
the motor controllers in the two drive motor systems and the controller in the fuel cell engine assembly are connected and controlled by the VCU.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, these two motors of motor are PMSM behind the preceding motor, and the output shaft of these two motors and the gearbox output shaft that corresponds separately are not on same axis, but are located parallel direction.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, the back motor is equipped with the parking system, and the parking system is connected and is controlled by VCU for the parking is used.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, one or more in front drive motor system and the back drive motor system dispose the disconnection mechanism, and this disconnection structure is located between the drive motor system's at place motor and the gearbox, and when this disconnection mechanism acted on, the input shaft disconnection of motor output shaft and gearbox, the motor can get into idle running state, otherwise, links to each other between the input shaft of motor output shaft and gearbox.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, among the motor controller in two driving motor systems and the fuel cell engine assembly the controller is connected through the CAN bus in VCU.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, front drive motor system and back drive motor system correspond have front end housing and rear end cap, and front end housing and rear end cap all adopt half axle support structure.
Further, the utility model discloses an among the hydrogen fuel cell electric automobile dual drive motor system, preceding motor and back motor are through the mode and chassis and the connected to the frame that exceed 3 point suspensions.
Use the utility model discloses a hydrogen fuel cell electric automobile dual drive motor system has following technological effect: the utility model realizes the double-motor driving of the front axle and the rear axle in the hydrogen fuel cell electric car, the double-motor driving can simultaneously work in the full-force acceleration process of the vehicle by matching the power of the battery and the motor, so that the total power is improved; when the vehicle runs under normal working conditions, the vehicle can work by a single motor. Therefore, the motor can work in a high-efficiency interval frequently, and meanwhile, the peak capacity of the battery can be completely released, so that the performance and the endurance are considered.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic diagram of the dual drive motor of the hydrogen fuel cell electric vehicle of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram of a dual drive motor for a hydrogen fuel cell electric vehicle according to the present invention. The utility model discloses a hydrogen fuel cell electric automobile dual drive motor system contains: vcu (vehicle Control unit), a middle hydrogen tank 6, a rear hydrogen tank 7, two drive motor systems, and a fuel cell engine assembly 1.
The middle hydrogen tank 6 is located at the middle of the hydrogen fuel cell electric vehicle in the front-rear direction, and the rear hydrogen tank 7 is located at the rear of the hydrogen fuel cell electric vehicle in the front-rear direction. The number of 1-3 jars is adopted to middle part hydrogen tank 6, can adjust according to the actual arrangement condition, and rear portion hydrogen tank 7 is a jar.
The two driving motor systems are a front driving motor system 2 and a rear driving motor system 3, the front driving motor system 2 is integrated with a front motor, a front gearbox and a front motor controller, and the rear driving motor system 3 is integrated with a rear motor, a rear gearbox and a rear motor controller; the front motor is positioned at the front shaft, and the rear motor is positioned at the rear shaft; the output shaft of the front motor is connected with the input shaft of the front gearbox, the output shaft of the front gearbox is used for connecting the front left tire and the front right tire, the output shaft of the rear motor is connected with the input shaft of the rear gearbox, and the output shaft of the rear gearbox is used for connecting the rear left tire and the rear right tire; the front gearbox is provided with a reduction gearbox, the forward direction of the vehicle head is taken as the forward direction, and the front gearbox is arranged on the right side close to the front motor. The two motors of the front motor and the rear motor are both permanent magnet synchronous motors, and output shafts of the two motors and output shafts of the corresponding gearboxes are not on the same axis but are positioned in the parallel direction. In the two driving motor systems, the power range of the front motor is 40-150 kw, and the power range of the rear motor is 100-250 kw, but in other implementation manners, the power ranges of the two motors may be set to be the same.
In the two-drive motor system of the hydrogen fuel cell electric automobile, the rear motor is provided with a parking system which is connected with and controlled by a VCU8 and is used for parking. One or more of the front drive motor system 2 and the rear drive motor system 3 is/are provided with a disconnecting mechanism, the disconnecting mechanism is positioned between the motor and the gearbox of the drive motor system, when the disconnecting mechanism acts, the output shaft of the motor is disconnected with the input shaft of the gearbox, the motor can enter an idle state, otherwise, the output shaft of the motor is connected with the input shaft of the gearbox.
The fuel cell engine assembly 1 is positioned at the front part of the hydrogen fuel cell electric automobile in the front-back direction, provides working electric energy for two driving motor systems and other loads of the hydrogen fuel cell electric automobile, comprises a galvanic pile and a controller for controlling the working state of the galvanic pile, and is respectively connected with a middle hydrogen tank 6 and a rear hydrogen tank 7 through hydrogen inlet pipes k and j so as to obtain hydrogen for working; the front driving motor system 2 is fixed behind and below the fuel cell engine assembly 1, and the rear driving motor system 3 is located between the middle hydrogen tank 6 and the rear hydrogen tank 7. The output end of the fuel cell engine assembly 1 is connected with the DCDC and PDU module 4 and is used for controlling the energy flow direction of the two driving motor systems under the control of the DCDC and PDU module 4.
The motor controllers in the two drive motor systems and the controller in the fuel cell engine assembly 1 are connected and controlled by the VCU 8. Preferably, the motor controllers in the two drive motor systems and the connection of the controllers in the fuel cell engine assembly 1 to the VCU8 are connected by a CAN bus, where d, b, m, n, p, q, s in fig. 1 represent the low voltage connection (with respect to the high voltage connection u, v, w described below) and the CAN communication harness.
Of course, the hydrogen fuel cell electric vehicle should also have a steering system 9 for steering.
The utility model discloses an among the control method that is arranged in foretell hydrogen fuel cell electric automobile dual drive motor system, two driving motor systems are carried out independent control respectively by VCU8, control method includes:
and calculating the power required by the hydrogen fuel cell electric automobile.
When the required power is less than the peak power reserved by a single motor, the VCU8 controls one of the two drive motor systems to work, the rest motors do not work, and the axle with large axle load in the front axle and the rear axle is selected as the drive axle. The front and rear shaft motors have low load rate, and if double motors cause lower working efficiency of the two motors, only one motor is needed at the moment. In this case, on one hand, overheating caused by high-power driving of a single motor is reduced; on the other hand, when the double-shaft drive is carried out, the radiuses of the front wheel and the rear wheel are different due to different tire wear or air pressure; or the front and rear driving wheels have different strokes due to uneven road surface and curve running, so that the power circulation phenomenon of the front and rear driving axles is caused, the additional consumption of the motor power is caused, and the abnormal abrasion of the tire and the transmission system parts is caused.
When the required power is not less than the peak power stored by a single motor and is less than a preset value, the VCU8 controls the two driving motor systems to adopt a working mode of a double-shaft double motor, outputs corresponding torques according to the charge proportion of the front shaft and the rear shaft to respectively drive the front motor and the rear motor, and controls the rotation speed coordination of the front motor and the rear motor to prevent the driving wheels from slipping and slipping.
In the two driving motor systems, four-quadrant control of the motors is realized by corresponding motor controllers which are integrated in the driving motor systems, a cooling system and motor voltage input lines (high-voltage connecting lines u, v and w) are shared inside the driving motor systems, the two driving motor systems respond to torque quality solved by the control of the whole vehicle to control, and the two driving motor systems realize self internal and external fault diagnosis through the integrated motor controllers. If any one or more motors fail, the VCU controls the remaining one motor to participate in driving, and the vehicle is operated under the derating condition.
Under the braking working condition, a front and rear axle double-motor driving system is adopted for braking, and in order to recover braking energy as much as possible, a braking strategy can control the front and rear axle motors to perform double-motor regenerative braking in a power generation state; if the regenerative braking force of the motor is smaller than the braking force required by the vehicle, the insufficient part is supplemented by the mechanical braking force; the regenerated electrical energy can be stored in the supercapacitor 5. The front motor and the rear motor are braked, so that the braking distance is shortened, and the direction stability of the vehicle during braking is ensured.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (7)
1. A four-drive motor system of a hydrogen fuel cell electric vehicle is characterized by comprising: the system comprises a VCU, a middle hydrogen tank, a rear hydrogen tank, two driving motor systems and a fuel cell engine assembly;
the middle hydrogen tank is positioned in the middle of the hydrogen fuel cell electric automobile in the front-back direction, and the rear hydrogen tank is positioned at the rear of the hydrogen fuel cell electric automobile in the front-back direction;
the two driving motor systems are a front driving motor system and a rear driving motor system, the front driving motor system is integrated with a front motor, a front gearbox and a front motor controller, and the rear driving motor system is integrated with a rear motor, a rear gearbox and a rear motor controller; the front motor is arranged at the front shaft, and the rear motor is arranged at the rear shaft; the output shaft of the front motor is connected with the input shaft of the front gearbox, the output shaft of the front gearbox is used for connecting the front left tire and the front right tire, the output shaft of the rear motor is connected with the input shaft of the rear gearbox, and the output shaft of the rear gearbox is used for connecting the rear left tire and the rear right tire; the front gearbox is provided with a reduction gearbox, the forward direction of the headstock is taken as the forward direction, and the front gearbox is arranged close to the right side of the front motor;
the fuel cell engine assembly is positioned at the front part of the hydrogen fuel cell electric automobile in the front-back direction, provides working electric energy for the two driving motor systems and other loads of the hydrogen fuel cell electric automobile, comprises a galvanic pile and a controller for controlling the working state of the galvanic pile, and is respectively connected with the middle hydrogen tank and the rear hydrogen tank to obtain hydrogen for working; the front driving motor system is fixed behind and below the fuel cell engine assembly, and the rear driving motor system is positioned between the middle hydrogen tank and the rear hydrogen tank;
the motor controllers in the two drive motor systems and the controller in the fuel cell engine assembly are connected and controlled by the VCU.
2. The four-drive motor system of the hydrogen fuel cell electric vehicle according to claim 1, wherein the two motors, i.e. the front motor and the rear motor, are both permanent magnet synchronous motors, and the output shafts of the two motors are not on the same axis with the output shaft of the corresponding gearbox, but are in parallel.
3. The hydrogen fuel cell electric vehicle four-drive motor system according to claim 1, wherein the rear motor is equipped with a parking system connected and controlled by the VCU for parking use.
4. The four-drive motor system of the hydrogen fuel cell electric vehicle as claimed in claim 1, wherein one or more of the front drive motor system and the rear drive motor system is provided with a disconnecting mechanism, the disconnecting mechanism is positioned between the motor and the gearbox of the drive motor system, when the disconnecting mechanism is acted, the output shaft of the motor is disconnected with the input shaft of the gearbox, the motor can enter an idle state, otherwise, the output shaft of the motor is connected with the input shaft of the gearbox.
5. The hydrogen-fuel-cell electric vehicle four-drive motor system according to claim 1, wherein the connection of the motor controllers in the two drive motor systems and the controller in the fuel cell engine assembly to the VCU is via a CAN bus.
6. The four-drive motor system of the hydrogen fuel cell electric vehicle according to claim 1, wherein the front drive motor system and the rear drive motor system are provided with a front end cover and a rear end cover correspondingly, and the front end cover and the rear end cover both adopt a half-axle support structure.
7. The hydrogen fuel cell electric vehicle four-drive motor system according to claim 1, wherein the front motor and the rear motor are connected with the chassis and the frame in a manner of suspension exceeding 3 points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378369.7U CN212219920U (en) | 2020-03-23 | 2020-03-23 | Four-drive motor system of hydrogen fuel cell electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020378369.7U CN212219920U (en) | 2020-03-23 | 2020-03-23 | Four-drive motor system of hydrogen fuel cell electric automobile |
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| Publication Number | Publication Date |
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| CN212219920U true CN212219920U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020378369.7U Active CN212219920U (en) | 2020-03-23 | 2020-03-23 | Four-drive motor system of hydrogen fuel cell electric automobile |
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| CN (1) | CN212219920U (en) |
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- 2020-03-23 CN CN202020378369.7U patent/CN212219920U/en active Active
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