Electric truck
An electric truck has a chassis, on which a driver's cab with a motor compartment containing an electric motor is disposed in the front of the electric truck, and in the rear a cargo body rests on the chassis. The cargo body substructure sits on vehicle longitudinal beams of the chassis. The cargo body bottom sealing the cargo body on the underside is spaced above the vehicle longitudinal beams to ensure clearance for a sufficient spring travel. A battery housing with at least one integrated battery is disposed in the intermediate space between the vehicle longitudinal beams and the body bottom, so that a larger installation space is available for the batteries and therefore a greater range for the electric truck. The battery is protected in this region and, moreover, the insulation of the battery housing simultaneously contributes to insulation of the cargo body disposed above the battery housing.
1. An electric truck comprising:
(a) a chassis having a front region, a rear region, and first and second vehicle longitudinal beams;
(b) a driver's cab resting on the front region;
(c) a cargo body resting on the rear region having a substructure seated on the first and second longitudinal beams and a body bottom sealing an underside of the cargo body and disposed with an intermediate space above the first and second vehicle longitudinal beams to provide a clearance for spring travel; and
(d) a battery housing with at least one integrated battery disposed in the intermediate space so that the battery housing and the cargo body form an enclosed unit joined with one another;
wherein the body bottom is formed by a surface of the battery housing facing the cargo body;
wherein the battery housing is adapted for load transfer and rests directly on the first and second vehicle longitudinal beams; and
wherein the battery housing is an insulating housing with a double wall comprising an inner wall and an outer wall, wherein a microporous or nanoporous filling material, which is evacuated with formation of an at least partial vacuum, is disposed between the inner and the outer wall of the battery housing, and wherein the filling material has a bracing function, so that the battery housing is equipped with a braced vacuum insulation.
2. The electric truck according to claim 1 , further comprising at least one driven vehicle axle and at least one electric motor, wherein the at least one electric motor is disposed in a motor compartment in the front region in front of and/or underneath the driver's cab, or wherein the at least one electric motor is disposed as at least one hub motor in the at least one driven vehicle axle.
3. The electric truck according to claim 1 , wherein several batteries are spaced apart from one another in the battery housing.
4. The electric truck according to claim 3 , wherein the battery housing is disposed between the first and second vehicle longitudinal beams so that the battery housing projects above and below the first and second vehicle longitudinal beams.
5. The electric truck according to claim 3 , wherein the batteries in the battery housing are separated from one another by housing partitions.
6. The electric truck according to claim 4 , wherein the batteries are received interlockingly in respective cages.
7. The electric truck according to claim 6 , wherein the cages are made of lightweight, glass-fiber-reinforced plastic and are secured inside the battery housing by adhesive bonding or by a cage unit adhesively bonded inside the battery housing.
8. The electric truck according to claim 7 , wherein the cage unit is secured inside the battery housing by interlocking and frictional clamping elements.
9. The electric truck according to claim 7 , wherein the cages of the cage unit are secured via interlocking and frictional clamping elements braced directly against the battery housing.
10. The electric truck according to claim 3 , wherein the battery housing is provided with several withdrawable units, and wherein the batteries can be inserted into the withdrawable units in such a way that, during insertion, each of the batteries can be directly connected via plug contacts disposed respectively in the withdrawable units.
11. The electric truck according to claim 10 , further comprising an electric truck electrical system, wherein different voltage levels concerning a vehicle electrical system, a drive electrical system and a refrigeration electrical system are provided within the electric truck electrical system, wherein each withdrawable unit of the battery housing is respectively associated with one of the different voltage levels and is equipped with a corresponding battery of the several batteries.
12. The electric truck according to claim 11 , wherein the separate withdrawable units are respectively equipped with individual plug couplings for connection of the corresponding batteries and the batteries in turn are respectively equipped with plugs corresponding to the individual plug couplings.
13. The electric truck according to claim 3 , wherein the cargo body comprises side walls, a top element, and a liftgate and is formed as a sandwich element in such a way that at least one of the side walls, the top element and the liftgate has an inner wall and an outer wall, wherein a braced vacuum insulation is disposed between the inner wall and the outer wall.
14. The electric truck according to claim 13 , wherein the liftgate is formed as a part of the chassis or as a part of the cargo body.
15. The electric truck according to claim 13 , wherein at least one of the side walls of the cargo body is equipped on an inside wall facing an interior of the cargo body with a refrigerating surface.
16. The electric truck according to claim 13 , wherein the sandwich element has first and second sides lined with cover panels.
17. The electric truck according to claim 13 , wherein at least one of the top element and the side walls of the cargo body is lined on an outside portion with solar modules for ensuring during travel operation a recharging of the batteries received in the battery housing.
18. The electric truck according to claim 1 , further comprising at least one electrical refrigerating unit associated with the cargo body.
19. The electric truck according to claim 18 , wherein the at least one refrigerating unit is disposed on a roof of the driver's cab underneath the body bottom.
20. The electric truck according to claim 1 , further comprising regenerative refrigeration elements associated with the cargo body.
21. The electric truck according to claim 1 , wherein the electric truck is adapted to be connected to a data-acquisition unit for sensing vehicle data of the electric truck and transmitting the vehicle data wirelessly to a central computer for fleet management of the electric truck with other connected electric trucks.
22. An electric truck comprising:
(a) a chassis having a front region, a rear region, and first and second vehicle longitudinal beams;
(b) a driver's cab resting on the front region;
(c) a cargo body resting on the rear region having a substructure seated on the first and second longitudinal beams and a body bottom sealing an underside of the cargo body and disposed with an intermediate space above the first and second vehicle longitudinal beams to provide a clearance for spring travel; and
(d) a battery housing with at least one integrated battery disposed in the intermediate space between the first and second vehicle longitudinal beams and underneath the body bottom so that the battery housing and the cargo body form an enclosed unit joined with one another;
wherein the body bottom is formed by a surface of the battery housing facing the cargo body;
wherein the battery housing is adapted for load transfer; and
wherein the battery housing is an insulating housing with a double wall comprising an inner wall and an outer wall, wherein a microporous or nanoporous filling material, which is evacuated with formation of an at least partial vacuum, is disposed between the inner and the outer wall of the battery housing, and wherein the filling material has a bracing function, so that the battery housing is equipped with a braced vacuum insulation.