CN111469648A - Low-floor pure electric bus - Google Patents
Low-floor pure electric bus Download PDFInfo
- Publication number
- CN111469648A CN111469648A CN202010449799.8A CN202010449799A CN111469648A CN 111469648 A CN111469648 A CN 111469648A CN 202010449799 A CN202010449799 A CN 202010449799A CN 111469648 A CN111469648 A CN 111469648A
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- China
- Prior art keywords
- battery
- low
- floor
- underframe
- pure electric
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/08—Understructures, i.e. chassis frame on which a vehicle body may be mounted built up with interlaced cross members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0455—Removal or replacement of the energy storages
Abstract
The invention discloses a low-floor pure electric bus, which relates to the technical field of automobiles and comprises a bottom frame, a top cover and a plurality of first battery packs, wherein the bottom frame is of a truss structure formed by splicing a plurality of steel pipes, and a plurality of installation cabins are arranged at the middle section of the bottom frame; each first battery pack comprises a plurality of short battery cell monomers which are connected in series and parallel, and the first battery packs are detachably mounted in the mounting cabin. The invention adopts the short cell monomer to fully compress the height of the battery compartment in a breakthrough manner, thereby effectively controlling the ground clearance of the underframe, ensuring that one-level stepping can be realized, enabling the underframe to be flat and have no steps, realizing the design of a horizontal full-low floor from front to back in the car, improving the safety and the control stability of the whole car and enabling the operation of the urban passenger car to be more efficient.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a low-floor pure electric bus.
Background
The urban passenger car can be divided into a first-level step, a second-level step and a third-level step according to the step number of the passenger door steps, wherein the front door and the rear door are all used for realizing the first-level step and are called low-floor urban passenger cars, and only the front door is used for realizing the first-level step and is called low-entrance urban passenger cars. The urban passenger car realizes low floor, can improve the transport efficiency and transport safety, and is greatly convenient for the public trip of the old, the disabled, the pregnant women, the children and other people, thereby being an important development direction of the urban passenger car.
Compared with a traditional fuel passenger car or a hybrid power passenger car, the pure electric passenger car has the advantages of energy conservation and environmental protection, and is a current mainstream city passenger car. At present most pure [ electric ] motor coach can't accomplish the full low floor structure in the car completely, can only realize the low floor structure of vehicle qianmen to the regional position of well door, and its reason lies in: the electric motor coach comprises a plurality of components such as a power battery pack, a heat dissipation water tank, a power steering pump, a high-voltage control cabinet and the like, and the power battery pack is large in quantity and large in occupied space, so that if the low-floor design is to be realized, the installation positions of the existing components need to be reasonably changed, the layout of the power battery pack is required to be very compact and reliable, and the technical problem of realizing the low-floor design is solved.
In addition, current pure [ electric ] motor coach is concentrated the power battery group and is arranged at frame middle section or back end mostly to it is inconvenient to dismantle after the installation, is unfavorable for the maintenance and the maintenance in later stage.
Based on the structure, the low-floor pure electric passenger car has the advantages that the layout of the power battery pack is compact, and the full-low floor structure in the car can be realized.
Disclosure of Invention
The invention provides a low-floor pure electric bus, which mainly aims to solve the problems.
The invention adopts the following technical scheme:
a low-floor pure electric bus comprises a bottom frame, a top cover and a plurality of first battery packs, wherein the bottom frame is of a truss structure formed by splicing a plurality of steel pipes, and a plurality of installation cabins are arranged in the middle section of the bottom frame; each first battery pack comprises a plurality of short battery cell monomers which are connected in series and parallel, and the first battery packs are detachably mounted in the mounting cabins.
Further, above-mentioned first group battery still includes battery box and coupling assembling, has placed a plurality of above-mentioned short electric core monomers in the above-mentioned battery box, and the battery box sets up in the installation cabin through above-mentioned coupling assembling detachably.
Furthermore, the height of the battery box is less than 170mm, and the height of the short battery cell is less than 120 mm.
Further, the low-floor pure electric bus also comprises a second battery pack; the rear section of the underframe is provided with a rear cabin, and the second battery pack is detachably arranged in the rear cabin.
Still further, this low-floor pure [ electric ] motor coach still includes steering pump, air compressor machine, gas holder, controller and the high voltage distribution box who sets up in above-mentioned rear deck.
Further, the low-floor pure electric bus also comprises a third battery pack; the third battery pack is detachably arranged in the middle section of the top cover.
Further, the low-floor pure electric bus also comprises a front wheel and a rear wheel which are arranged on the underframe and a driving device used for driving the front wheel and/or the rear wheel, and the driving device adopts a distributed driving mode.
The connecting assembly further comprises connecting rods, connecting lugs and an -shaped bracket, wherein the -shaped bracket is arranged on two sides of the battery box with an opening facing outwards, the two connecting rods are arranged at the bottom of the -shaped bracket, and two ends of each connecting rod are connected to the underframe through the connecting lugs.
The connecting assembly further comprises cross beams and longitudinal beams which are mutually overlapped, the cross beams are arranged on two sides of the bottom of the battery box, and two ends of the longitudinal beams are connected to the underframe through L-shaped connecting frames.
Further, above-mentioned coupling assembling includes a plurality of installing supports, and the one end of this installing support is equipped with the installation face that is used for setting firmly the battery box, and the other end is equipped with the connecting portion that are used for connecting above-mentioned chassis.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the short cell monomer to fully compress the height of the battery compartment in a breakthrough manner, thereby effectively controlling the ground clearance of the underframe, ensuring that one-level stepping can be realized, enabling the underframe to be flat and have no steps, realizing the design of a horizontal full-low floor from front to back in the car, improving the safety and the control stability of the whole car and enabling the operation of the urban passenger car to be more efficient.
2. According to the invention, the first battery pack is detachably mounted by arranging the battery box and the connecting assembly which are matched with each other, so that later-stage overhaul and maintenance are greatly facilitated, the reserved operation space in the vehicle is saved, the ground clearance of the floor in the vehicle is reduced, and the movable area of passengers in the vehicle is effectively increased.
3. The distributed driving mode adopted by the invention can fully save the installation space of the driving device, and is beneficial to realizing the design of the full-low floor in the vehicle.
Drawings
Fig. 1 is a schematic structural diagram of a chassis according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a top cover according to an embodiment of the invention.
Fig. 3 is a schematic view illustrating the installation of the first battery pack according to the first embodiment of the present invention.
Fig. 4 is a first schematic view illustrating the installation of the first battery pack according to the second embodiment of the present invention.
Fig. 5 is a second schematic view illustrating the installation of the first battery pack according to the second embodiment of the invention.
Fig. 6 is a schematic view illustrating the installation of the first battery pack according to the third embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details.
The first embodiment is as follows:
referring to fig. 1 to 3, the low-floor pure electric bus comprises a bottom frame 1, a top cover 2 and a plurality of first battery packs, wherein the bottom frame 1 is of a truss structure formed by splicing a plurality of steel pipes 10, and a plurality of installation cabins 11 are arranged in the middle section of the bottom frame 1; each first battery pack comprises a plurality of short battery cells connected in series and parallel, and the first battery packs are detachably mounted in the mounting cabin 11. The invention adopts the short cell monomer to fully compress the height of the battery compartment 11, thereby effectively controlling the ground clearance of the underframe 1, ensuring that one-stage stepping can be realized, enabling the underframe 1 to be flat and have no steps, realizing the design of a horizontal all-low floor from front to back in the car, improving the safety and the control stability of the whole car and enabling the operation of the urban passenger car to be more efficient.
Referring to fig. 1 to 3, the first battery pack further includes a battery box 31 and a connecting assembly 32, wherein a plurality of short battery cells are placed in the battery box 31, and the battery box 31 is detachably disposed in the installation compartment 11 through the connecting assembly 32. In order to better control the height of the chassis 1 from the ground and ensure that one-level stepping can be realized, the overall height of the battery box 31 is generally required to be less than 170mm, and the height of the short cell is required to be less than 120 mm. In addition, in practical production, the first battery pack can be fixed by bolts, and the battery box 31 is directly mounted in the battery compartment 11 by bolts.
Referring to fig. 1 to 3, specifically, the connection assembly 32 includes a connection rod 321, connection lugs 322 and -shaped brackets 323, -shaped brackets 323 are disposed at both sides of the battery box 31 with openings facing outward, two connection rods 321 are disposed at the bottom of the -shaped brackets 323, and both ends of the connection rods 321 are connected to the chassis 1 through the connection lugs 322. when mounting, the -shaped brackets 323 are fixed at both sides of the battery box 31 through bolts, then the connection rod 321 is fixed at the lower mounting surface of the -shaped brackets 323 through bolts, and the mounting lugs 322 are disposed at both ends of the connection rod 321. finally, the battery box 31 is loaded into the mounting compartment 11 from the bottom of the chassis 1, the mounting lugs 322 are fixed on the steel tube 10 of the chassis 1, and the upper mounting surface of the -shaped brackets 323 is fixed on the steel tube 10.
Referring to fig. 1 to 3, the low-floor pure electric passenger car further includes a second battery pack (not shown); the rear section of the underframe 1 is provided with a rear cabin 12, and the second battery pack is detachably arranged in the rear cabin 12. The second battery pack may be directly secured in the rear compartment 12 by bolts or may be mounted in the rear compartment by auxiliary mounting brackets. In addition, some components for securing the driving safety and functional requirements of the vehicle, such as an air pump, an air compressor, an air tank, a controller, and a high-voltage distribution box, may be collectively disposed in the rear compartment 12.
Referring to fig. 1 to 3, the low-floor pure electric passenger car further includes a third battery pack 4; the third battery pack 4 is detachably disposed at the middle section of the top cover 2. Similarly, the third battery pack 4 may be directly fixed to the top cover 2 by bolts, or may be mounted to the top cover 2 by auxiliary mounting brackets.
Referring to fig. 1 to 3, the low-floor pure electric bus further includes a driving device (not shown) disposed on the front wheels (not shown) and the rear wheels (not shown) of the chassis 1 for driving the front wheels and/or the rear wheels, and the driving device adopts a distributed driving manner. The distributed driving mode comprises a wheel edge driving mode and a wheel hub driving mode, the installation space of the driving device can be fully saved by adopting the distributed driving mode, and the design of a full-low floor in the vehicle is favorably realized.
The invention provides a pure electric bus with large power distribution requirement. In actual production and use, the priority levels of the three battery arrangement regions are: the middle section of the underframe > the rear cabin 12> the top cover 2, and a manufacturer can select corresponding arrangement areas in sequence according to actual power distribution quantity requirements of the pure electric passenger car. When the demand of the power distribution quantity of the pure electric bus is small, namely the quantity of the power batteries is small, all the power batteries are arranged in the middle section of the underframe 1 in a centralized manner; when the pure electric bus is in need of medium distribution power, namely when the number of the power batteries is slightly more and the arrangement space of the middle section area of the underframe 1 is insufficient, the rest power batteries can be arranged in the rear cabin 12. When the demand of the power distribution quantity of the pure electric bus is large, batteries can be respectively arranged in three areas, namely the middle section of the underframe 1, the rear cabin 12 and the top cover 2. The power battery arranged in the middle section of the underframe 1 preferably uses a short battery cell monomer, and the power battery arranged in the rear cabin 12 and the top cover 2 preferably uses a power battery with a conventional height.
Example two:
referring to fig. 1 to 5, different from the first embodiment, the connection assembly 32 in the first embodiment includes cross beams 324 and longitudinal beams 325, which are overlapped with each other, the cross beams 324 are disposed on two sides of the bottom of the battery box 31, and two ends of the longitudinal beams 325 are connected to the underframe 1 through L-shaped connection frames 326, when mounting, the cross beams 324 and the longitudinal beams 325 can be overlapped, then the battery box is mounted on the cross beams 324, and finally two ends of the longitudinal beams 325 are disposed on the steel pipes 10 of the underframe 1 through L-shaped connection frames 326, so that the cross beams 324 and the longitudinal beams 325 not only play a role of fixing the power battery, but also can effectively reinforce the structural strength of the middle section of the underframe.
Example three:
referring to fig. 1 to 6, different from the first embodiment and the second embodiment, the connection assembly 32 in this embodiment includes a plurality of mounting brackets 327, one end of each mounting bracket 327 is provided with a mounting surface for fixing the battery box 31, and the other end of each mounting bracket 327 is provided with a connection portion for connecting the chassis 1. The mounting bracket 327 has a simple structure and smart design, and is beneficial to realizing the quick mounting and dismounting of the battery box 31 and the chassis 1.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (10)
1. The utility model provides a pure [ electric ] motor coach of low-floor, includes chassis, top cap and a plurality of first group battery, its characterized in that: the underframe is of a truss structure formed by splicing a plurality of steel pipes, and a plurality of installation cabins are arranged at the middle section of the underframe; each first battery pack comprises a plurality of short battery cell monomers which are connected in series and parallel, and the first battery packs are detachably mounted in the mounting cabin.
2. The low floor pure electric passenger vehicle of claim 1, wherein: the first battery pack further comprises a battery box and a connecting assembly, a plurality of short battery cells are placed in the battery box, and the battery box is detachably arranged in the mounting cabin through the connecting assembly.
3. A low-floor electric motor coach as set forth in claim 2, wherein: the height of the battery box is less than 170mm, and the height of the short battery cell monomer is less than 120 mm.
4. The low floor pure electric passenger vehicle of claim 1, wherein: the battery pack further comprises a second battery pack; the chassis back end is equipped with the rear deck, second group battery detachably set up in the rear deck.
5. The low floor pure electric passenger vehicle of claim 4, wherein: the device also comprises a steering pump, an air compressor, an air storage tank, a controller and a high-voltage distribution box which are arranged in the rear cabin.
6. The low floor pure electric passenger vehicle of claim 1, wherein: the battery pack further comprises a third battery pack; the third battery pack is detachably arranged in the middle section of the top cover.
7. A low-floor pure electric passenger car according to any one of claims 1 to 6, wherein: the vehicle body further comprises a front wheel, a rear wheel and a driving device, wherein the front wheel and the rear wheel are arranged on the underframe, the driving device is used for driving the front wheel and/or the rear wheel, and the driving device adopts a distributed driving mode.
8. The low-floor pure electric bus as claimed in claim 2, wherein the connection assembly comprises connecting rods, connecting lugs and -shaped brackets, the -shaped brackets are arranged at two sides of the battery box with openings facing outwards, the two connecting rods are arranged at the bottoms of the -shaped brackets, and two ends of each connecting rod are connected to the underframe through the connecting lugs.
9. The low-floor pure electric bus as claimed in claim 2, wherein the connecting assembly comprises cross beams and longitudinal beams which are overlapped with each other, the cross beams are arranged on two sides of the bottom of the battery box, and two ends of a plurality of the longitudinal beams are connected to the underframe through L-shaped connecting frames.
10. A low-floor electric motor coach as set forth in claim 2, wherein: the connecting assembly comprises a plurality of mounting brackets, one end of each mounting bracket is provided with a mounting surface for fixedly arranging the battery box, and the other end of each mounting bracket is provided with a connecting part for connecting the underframe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449799.8A CN111469648A (en) | 2020-05-25 | 2020-05-25 | Low-floor pure electric bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449799.8A CN111469648A (en) | 2020-05-25 | 2020-05-25 | Low-floor pure electric bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111469648A true CN111469648A (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010449799.8A Pending CN111469648A (en) | 2020-05-25 | 2020-05-25 | Low-floor pure electric bus |
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| CN (1) | CN111469648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682121A (en) * | 2020-12-21 | 2021-11-23 | 厦门金龙汽车新能源科技有限公司 | Solving method for optimal arrangement scheme of bottom battery of pure electric bus |
-
2020
- 2020-05-25 CN CN202010449799.8A patent/CN111469648A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113682121A (en) * | 2020-12-21 | 2021-11-23 | 厦门金龙汽车新能源科技有限公司 | Solving method for optimal arrangement scheme of bottom battery of pure electric bus |
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