Utility model content
The purpose of this utility model is, provides a kind of rearmounted rear-guard four-wheel electric romance car, its compact conformation.
The utility model is achieved through the following technical solutions: a kind of rearmounted rear-guard four-wheel electric romance car, described rearmounted rear-guard four-wheel electric romance car comprises vehicle frame, battery pack, drive motor, dc-dc, electric machine controller, rear driving axle, front suspension, rear suspension, front chair fixed mount and back seat fixed mount, described battery pack is electrically connected with described dc-dc, described dc-dc is electrically connected with described drive motor, described drive motor is directly fixed on the middle part of rear driving axle, wherein, the retarder of described rear driving axle connects with the output shaft of described drive motor.
Wherein, in such scheme, described drive motor is fixed on the middle part of rear driving axle by flange.
Wherein, in such scheme, described battery pack comprises first group and second group, and described first group is positioned at below front chair fixed mount, and described second group is positioned at below back seat fixed mount.
Wherein, in such scheme, between described battery pack and described drive motor, be provided with urgent power-off switch.
Wherein, in such scheme, described drive motor is three phase alternating current motor.
Wherein, in such scheme, the opposite side of the described drive motor relative with described base is fixedly connected with a U-bolt by an auxiliary support plate with described rear driving axle.
Enforcement the beneficial effects of the utility model are: in rearmounted rear-guard four-wheel electric romance car of the present utility model, drive motor is directly fixed on the middle part of rear driving axle, saves driving system, compact conformation, and it is more reasonable that space is arranged.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further detailed.
As shown in Figure 1 and Figure 2, rearmounted rear-guard four-wheel electric romance car of the present utility model comprises vehicle frame 1, battery pack 2, drive motor 4, dc-dc 5, electric machine controller 3, rear driving axle 6, front suspension, rear suspension, front chair fixed mount 9 and back seat fixed mount 10 etc.Because vehicle body can install the vehicle body adopting general various ways, for clarity sake, in Fig. 1, Fig. 2, eliminate vehicle body, only retain chassis, power-driven system etc.
Wherein, described battery pack 2 is electrically connected with described dc-dc 5.Described dc-dc 5 is electrically connected with described drive motor 4.Described drive motor 4 is directly fixed on the middle part of rear driving axle 6.Wherein, the retarder of described rear driving axle 6 connects with the output shaft of described drive motor 4.
The front suspension of this rearmounted rear-guard four-wheel electric romance car adopts double cross arm independent suspension system, and rear suspension adopts the semi-independent suspension system of single trailing arm type.Such suspension system can improve the ride comfort of electronlmobil, improves the riding stability of electronlmobil.The steering swivel system of this rearmounted rear-guard four-wheel electric romance car adopts rack and pinion steering gear, and brake system adopts hydraulic assisting brake, and is equipped with vacuum booster.
Drive motor 4 is located at rear portion, chassis, and described drive motor 4 is directly fixed on the middle part of rear driving axle 6.Drive motor 4 and rear driving axle 6 adopt square flange 13 to be connected.Specifically, as shown in Figure 3, flange 13 is configured with 4 screws 15, drive motor 4 and rear driving axle 6 are fixed by 4 bolts.Drive motor 4 is installed in the middle part of back axle, drive axle-free, and mechanical efficiency is high.Thus, drive motor 4 is directly connected with rear driving axle 6 and drives trailing wheel.
Described battery pack 2 comprises first group 21 and second group 22.First group 21 and second group 22 is connected in series.Described first group 21 is positioned at below front chair fixed mount 9, and described second group 22 is positioned at below back seat fixed mount 10.Described first group 21 is fixed in front battery frame 12.Described second group 22 is fixed in rear battery frame 11.
In the present embodiment, drive motor 4 is three phase alternating current motor, and correspondingly, electric machine controller 3 is AC motor control.Dc-dc 5 is positioned at vehicle frame left front.Power convert can be become the operating voltage required for each module by dc-dc 5, for each element circuit provides working power, realizes voltage transformation and stable output.Such as, the voltage that the electrical part such as drive motor, electric machine controller uses is 72V, and the electrical equipment such as light fixture, instrument uses 12V voltage, needs to become 12V voltage for light fixture 72V voltage transitions by dc-dc 5.
Electric machine controller 3 and drive motor 4 are positioned at vehicle frame rear, and battery pack 2, drive motor 4, dc-dc 5, electric machine controller 3 are electrically connected.In the process of moving, under electric machine controller 3 controls, there is provided electric power that drive motor 4 is rotated by battery pack 2, by drive motor 4 output shaft by transmission of power to the retarder of rear driving axle 6, after retarder slows down increasing square, by back axle left and right semiaxis, power is finally delivered to trailing wheel 14, utilizes frictional force drives this four-wheel electric automobile in bottom surface to advance.
In more detail, described battery pack 2, drive motor 3, dc-dc 5, electric machine controller 3 are electrically connected.Battery pack 2 is used as car load power supply, electric machine controller 3 receive steerman provide advance or retreat direction digital controlled signal time, export the order controlling drive motor 4 main story or reversion, drive motor 4 performs after accepting the order of electric machine controller 3 and rotates and reverse; There is provided throttle or brake analog signal when electric machine controller 3 receives steerman, export and control the speed of drive motor 4 and the electric current needed for torque, drive motor 4 output speed and torque.By drive motor 4 output shaft, power is passed to rear driving axle 6, after the retarder of rear driving axle 6 slows down, by back axle left and right semiaxis, power is finally delivered to left rear wheel, off hind wheel, realizes the advance of car load, retrogressing, acceleration, braking.
In addition, in order to ensure in emergency circumstances vehicle safety, between battery pack 2 and drive motor 4, can urgent power-off switch being set, at vehicle in case of emergency, can urgent power-off switch being pressed, make car load without driving power.
Rearmounted rear-guard four-wheel electric romance car of the present utility model, compared with conventional electric automobile, simple and reliable for structure, energy-conserving and environment-protective, maintenance is convenient, economical and practical, compact conformation simultaneously, space connection and reasonable arrangement, can be widely used in the electric sight-seeing vehicle of various uses.
Above detailed description of the invention has been described in detail the utility model, but these are not formed restriction of the present utility model.Protection domain of the present utility model is not limited with above-mentioned embodiment, as long as those of ordinary skill in the art modify or change according to the equivalence that the utility model institute disclosure is done, all should include in the protection domain recorded in claims.