CN108544977B - Combined power conversion device of pure electric tractor and semitrailer - Google Patents

Combined power conversion device of pure electric tractor and semitrailer Download PDF

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Publication number
CN108544977B
CN108544977B CN201810684022.2A CN201810684022A CN108544977B CN 108544977 B CN108544977 B CN 108544977B CN 201810684022 A CN201810684022 A CN 201810684022A CN 108544977 B CN108544977 B CN 108544977B
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CN
China
Prior art keywords
semitrailer
storage battery
battery pack
pure electric
tractor
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Application number
CN201810684022.2A
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Chinese (zh)
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CN108544977A (en
Inventor
吕鑫
王亚飞
张瑞峰
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Jiangling Motors Corp Ltd
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Jiangling Motors Corp Ltd
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Priority to CN201810684022.2A priority Critical patent/CN108544977B/en
Publication of CN108544977A publication Critical patent/CN108544977A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438Arrangement under the floor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K1/00Arrangement or mounting of electrical propulsion units
    • B60K1/04Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0455Removal or replacement of the energy storages
    • B60K2001/0472Removal or replacement of the energy storages from below
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The invention relates to the technical field of electric automobiles, in particular to a combined power conversion mode design scheme of a pure electric tractor and a semitrailer, which comprises the pure electric tractor and the semitrailer, wherein a tractor power storage battery pack is fixed on the pure electric tractor; a semi-trailer storage battery pack is fixed on the chassis of the semi-trailer; the semi-trailer storage battery is connected with the traction vehicle power storage battery through a high-voltage cable. According to the invention, the semitrailer storage battery pack is connected with the tractor power storage battery pack through the high-voltage cable, so that the total electric storage capacity of the battery system of the pure electric tractor is increased, the driving range of the pure electric tractor is increased, and the applicability of the pure electric traction train in the middle-long distance transportation field is increased; the battery system is shortened in power exchange time by arranging the rapid replacement support, so that the non-stop charging operation of the pure electric tractor is realized, and the driving range and the operation efficiency of the vehicle are greatly improved.

Description

Combined power conversion device of pure electric tractor and semitrailer
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a combined power exchanging device of a pure electric tractor and a semitrailer.
Background
At present, the domestic pure electric traction vehicle has smaller driving mileage (usually less than or equal to 100 km) due to the limit of the capacity of a power storage battery, and can only be applied to short-distance transportation markets such as port yards and the like. The battery types matched with the domestic electric tractor mainly comprise lithium iron phosphate, ternary lithium, lithium titanate and the like (the energy density is 100-150Wh/kg, the volume ratio of the packaged battery is generally 100-200 kWh/L), and the total electric energy storage capacity of the battery system is 150-300 kWh. Since the wheelbase of the existing tractor is generally 3500-3800mm, the arrangement space reserved for the storage battery is limited, and meanwhile, since the storage battery is charged for a long time (quick charge), the charging during the operation of the vehicle can seriously affect the operation efficiency. So the current pure electric traction is difficult to adapt to the logistics transportation industry with longer transportation distance. At present, a semitrailer matched with a pure electric tractor in China is not provided with a power battery system, but is a conventional semitrailer.
The drop and pull transportation is arranged for improving the operation efficiency in the logistics industry by the current combined tractor/semitrailer train type. When the tractor supporting and hanging semitrailer meeting the standard of the throwing and hanging interchangeability reaches a destination station, the semitrailer is detached and unloaded (the semitrailer is unloaded and allocated or transported and stored, and the like), and the tractor is detached and connected with the ready semitrailer to be transported to a destination. The pure electric tractors in the prior art cannot adapt to the transportation working condition of this type.
Based on the consideration, the invention designs the combined power conversion device of the pure electric tractor and the semitrailer, and the pure electric tractor is in no-stop charging operation, so that the driving range and the operation efficiency of the vehicle are greatly improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a combined power conversion device for a pure electric tractor and a semitrailer, wherein the pure electric tractor is in non-stop charging operation, so that the driving range and the operation efficiency of a vehicle are greatly improved.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
The invention discloses a combined power conversion device of a pure electric tractor and a semitrailer, which comprises the pure electric tractor and the semitrailer, wherein a tractor power storage battery pack is fixed on the pure electric tractor; a semi-trailer storage battery pack is fixed on the chassis of the semi-trailer; the semi-trailer storage battery is connected with the traction vehicle power storage battery through a high-voltage cable.
The high voltage cable is a flexible power cable.
The semi-trailer storage battery pack is formed by connecting 7 groups of battery packs in series.
The traction vehicle power storage battery pack and the semi-trailer storage battery pack are respectively fixed on the pure electric traction vehicle and the semi-trailer through the quick replacement bracket.
The quick replacement bracket comprises a first component fixed on the back of the traction vehicle power storage battery pack and the semitrailer storage battery pack and a second component fixed on the frame, wherein the second component is of a square structure with a groove formed in the side wall, and a lock pin is arranged on the groove; the first component is of an L-shaped structure formed by a transverse rod and a longitudinal rod, and a clamping groove matched and clamped with the lock pin is formed in the rear side wall of the longitudinal rod.
The top of the lock pin is inclined upwards to form a hook-shaped structure.
One side of the clamping groove is communicated with the outside, a limiting plate is arranged on the other side of the clamping groove, a gap is arranged between one side wall of the lock pin and one inner side wall of the second component, and the width of the gap is equal to that of the limiting plate.
The transition groove is arranged below the clamping groove and communicated with the lower part of the clamping groove, and the width of the transition groove is smaller than that of the clamping groove.
An opening is formed in the bottom of the second member, and the cross-sectional shape of the opening is the same as the cross-sectional shape of the groove.
The invention has the beneficial effects that:
According to the invention, the semitrailer storage battery pack is connected with the tractor power storage battery pack through the high-voltage cable, so that the total electric storage capacity of the battery system of the pure electric tractor is increased, the driving range of the pure electric tractor is increased, and the applicability of the pure electric traction train in the middle-long distance transportation field is increased;
According to the invention, the quick replacement bracket is arranged to shorten the battery system power replacement time, so that the non-stop charging operation of the pure electric tractor is realized, and the driving range and the operation efficiency of the vehicle are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the electric traction vehicle of the present invention;
FIG. 3 is a schematic diagram of a semitrailer according to the present invention;
FIG. 4 is a schematic diagram of the electrical power connection between a semi-trailer and a pure electric traction vehicle through a high voltage cable;
FIG. 5 is a diagram illustrating the definition of a plug and a socket according to the present invention;
FIG. 6 is a schematic view of a quick change bracket according to the present invention;
FIG. 7 is an exploded view of the quick change bracket of the present invention;
fig. 8 is a schematic structural view of a first member in the present invention.
In the figure, 1 pure electric tractor, 2 semitrailer, 3 tractor power storage battery, 4 semitrailer storage battery, 5 high-voltage cable, 51 plug, 6 semitrailer socket, 7 tractor socket, 8 quick-change bracket, 81 first component, 811 transverse rod, 812 longitudinal rod, 813 clamping groove, 814 limiting plate, 815 transition groove, 82 second component, 821 groove, 822 lockpin, 823 opening.
Description of the embodiments
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
See fig. 1-8.
The invention discloses a combined power conversion device of a pure electric tractor and a semitrailer, which comprises the pure electric tractor 1 and the semitrailer 2, wherein a tractor power storage battery pack 3 is fixed on the pure electric tractor 1; a semitrailer storage battery pack 4 is fixed on the chassis of the semitrailer 2; the semi-trailer storage battery 4 is connected with the tractor power storage battery 3 through the high-voltage cable 5, the storage battery is carried on the chassis of the semi-trailer 2, the semi-trailer is long in wheelbase, the chassis space is large, the storage battery with 3-5 times of capacity of the tractor can be carried, then the total electric storage capacity of a battery system of the pure electric tractor 1 is increased by connecting the semi-trailer storage battery 4 with the tractor power storage battery 3 through the high-voltage cable 5, the driving range of the pure electric tractor is improved, the applicability of the pure electric traction train in the middle-long distance transportation field is increased, the semi-trailer 2 can supply power to the tractor when the pure electric tractor 1 runs, the semi-trailer can be replaced after the tractor reaches a throwing station, meanwhile, the tractor can be quickly replaced, and the electric traction train can realize continuous running.
The semitrailer 2 is provided with a semitrailer socket 6 connected with the semitrailer storage battery 4, the pure electric tractor 1 is provided with a tractor socket 7 connected with the tractor power storage battery 3, two ends of the high-voltage cable 5 are respectively provided with a plug-in connector 51 matched with the semitrailer and the tractor socket, an optimal plug-in connector is provided with a mechanical locking mechanism to prevent the plug-in connector 51 and the socket from loosening in the running process of the vehicle, and the plug-in connector 51 and the socket are shown in figure 6.
The high-voltage cable 5 is a flexible power cable to meet the relative movement of the tractor and the semitrailer on cornering and rough road surfaces.
The semi-trailer storage battery pack 4 is formed by connecting 7 groups of battery packs in series, two rows of 6 groups of battery packs can be arranged in front of a tire of the semi-trailer 2, and 1 group of battery pack can be arranged behind the tire, namely at the tail end of a semi-trailer chassis.
The tractor power storage battery pack 3 and the semitrailer storage battery pack 4 are respectively fixed on the pure electric tractor 1 and the semitrailer 2 through a quick replacement bracket 8, the quick replacement bracket 8 comprises a first member 81 fixed on the back of the tractor power storage battery pack 3 and the semitrailer storage battery pack 4 and a second member 82 fixed on a frame, the second member 82 is of a square structure with a groove 821 formed on the side wall, and a lock pin 822 is arranged on the groove 821; the first member 81 is in an L-shaped structure composed of a transverse rod 811 and a longitudinal rod 812, a clamping groove 813 matched and clamped with the lock pin 822 is formed in the rear side wall of the longitudinal rod 812, the battery system is shortened in power exchanging time through the arrangement of the quick replacement support 8, the non-stop charging operation of the pure electric tractor is realized, the driving range and the operation efficiency of the vehicle are greatly improved, the first member and the second member which are preferably arranged symmetrically comprise left and right members, the battery pack is fixed on the transverse rod 811, when the clamping groove 813 on the first member 81 reaches the top of the lock pin 822 at the lowest position through the existing power exchanging lifting equipment, the clamping groove 813 and the lock pin 822 are pushed to the direction of the second member 82, the quick fixing of the battery pack is realized, and the dismounting process is opposite to the above process
The top of the lock pin 822 is inclined upwards to form a hook structure, so that the lock pin 822 is locked with the clamping groove 813 more firmly, and the lock pin 822 cannot be separated from the clamping groove due to bumping of a vehicle, so that unnecessary loss is avoided.
One side of the slot 813 is communicated with the outside, the other side is provided with a limiting plate 814, a gap is arranged between one side wall of the lock pin 822 and one inner side wall of the second member 82, the width of the gap is equal to that of the limiting plate 814, after the slot 813 is locked and clamped with the lock pin 822, the horizontal displacement can not occur, the stability of the slot is ensured, and the collision caused by bumping of a vehicle is prevented.
The below of draw-in groove 813 is equipped with transition groove 815, transition groove 815 with the below intercommunication of draw-in groove 813, transition groove 815's width is less than the width of draw-in groove 813, makes draw-in groove 813 and lockpin 822 block speed faster through setting up transition groove 815, realizes the quick replacement of storage battery.
The bottom of the second member 82 is formed with an opening 823, and the cross-sectional shape of the opening 823 is the same as that of the groove 821, so that the second member 82 can be shorter, so that the bottom plate thereof is prevented from colliding with the bottom of the first member 81, the material is saved, and the mounting on the vehicle frame is easier.
Embodiment one: in this embodiment, a set of battery packs are respectively arranged on two sides of a chassis of the pure electric tractor 1, each set of battery pack has a capacity of (80 kWh), 7 sets of battery packs are arranged on the chassis of the semitrailer 1, each set of battery pack has a capacity of (80 kWh) of 6 sets of battery packs in front of a tire, the 1 set of battery packs carried in a larger space behind the tire has a capacity of (120 kWh), when the semitrailer 2 and the pure electric tractor 1 are operated through a train (the total capacity of a power battery is 760 kWh) formed by connecting high-voltage cables, the semitrailer 2 can continuously supply power to the pure electric tractor 1, the driving range (40 km/h constant-speed driving range) of the tractor is improved, after the semitrailer arrives at a throwing station, the semitrailer is unloaded for unloading/distributing and charging (changing) simultaneously, and then the semitrailer which is prepared is replaced after the 2 sets of battery packs of the tractor are changed.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes or direct or indirect application in the relevant art utilizing the present specification and drawings are included in the scope of the present invention.

Claims (2)

1. The utility model provides a pure electric traction car and semitrailer combination trades electric installation, includes pure electric traction car (1), semitrailer (2), its characterized in that: a traction vehicle power storage battery pack (3) is fixed on the pure electric traction vehicle (1); a semitrailer storage battery pack (4) is fixed on the chassis of the semitrailer (2); the semi-trailer storage battery pack (4) is connected with the tractor power storage battery pack (3) through a high-voltage cable (5); the semi-trailer storage battery pack (4) is formed by connecting 7 groups of battery packs in series, two rows of 6 groups of battery packs are arranged in front of a tire of the semi-trailer (2), and 1 group of battery pack is arranged behind the tire, namely at the tail end of a chassis of the semi-trailer; the traction vehicle power storage battery pack (3) and the semitrailer storage battery pack (4) are respectively fixed on the pure electric traction vehicle (1) and the semitrailer (2) through the quick replacement bracket (8); the quick-change bracket (8) comprises a first component (81) fixed on the back of the tractor power storage battery pack (3) and the semitrailer storage battery pack (4) and a second component (82) fixed on the frame, wherein the second component (82) is of a square structure with a groove (821) formed in the side wall, and a lock pin (822) is arranged on the groove (821); the first member (81) is of an L-shaped structure composed of a transverse rod (811) and a longitudinal rod (812), and a clamping groove (813) matched and clamped with the lock pin (822) is formed in the rear side wall of the longitudinal rod (812); the top of the lock pin (822) is inclined upwards to form a hook-shaped structure; one side of the clamping groove (813) is communicated with the outside, a limiting plate (814) is arranged on the other side of the clamping groove, a gap is arranged between one side wall of the lock pin (822) and one inner side wall of the second component (82), and the width of the gap is equal to that of the limiting plate (814); a transition groove (815) is arranged below the clamping groove (813), the transition groove (815) is communicated with the lower part of the clamping groove (813), and the width of the transition groove (815) is smaller than that of the clamping groove (813); an opening (823) is formed in the bottom of the second member (82), and the cross-sectional shape of the opening (823) is identical to the cross-sectional shape of the groove (821).
2. The electric traction vehicle and semitrailer combination battery exchange device of claim 1, wherein: the high-voltage cable (5) is a flexible power cable.
CN201810684022.2A 2018-06-28 2018-06-28 Combined power conversion device of pure electric tractor and semitrailer Active CN108544977B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810684022.2A CN108544977B (en) 2018-06-28 2018-06-28 Combined power conversion device of pure electric tractor and semitrailer

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Application Number Priority Date Filing Date Title
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CN108544977B true CN108544977B (en) 2024-05-10

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110562051A (en) * 2019-09-10 2019-12-13 海通科创(深圳)有限公司 Power supply system and control method of electric tractor
CN212195111U (en) * 2020-03-24 2020-12-22 海通科创(深圳)有限公司 Tractor power supply system
CN217197747U (en) * 2021-11-30 2022-08-16 奥动新能源汽车科技有限公司 Electric automobile with compact battery pack layout
CN113978268A (en) * 2021-12-08 2022-01-28 博雷顿科技有限公司 Split type battery system and electric tractor
CN116653879A (en) * 2022-12-01 2023-08-29 奥动新能源汽车科技有限公司 Vehicle position adjusting device trades

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202272088U (en) * 2011-09-22 2012-06-13 柳崇禧 Mobile automatic charging/replacing station for electric vehicles
CN107323545A (en) * 2017-06-16 2017-11-07 何晓明 A kind of transportation resources of electric traction semitrailer
EP3290305A1 (en) * 2016-09-02 2018-03-07 MAN Truck & Bus AG Road vehicle train combination, in particular as long commercial vehicle combination
CN207311083U (en) * 2017-10-27 2018-05-04 中国重汽集团济南动力有限公司 A kind of pure electric vehicle tractor postposition battery pack bracket assembly
CN208393167U (en) * 2018-06-28 2019-01-18 江铃汽车股份有限公司 Electric installation is changed in a kind of pure electric vehicle tractor and semitrailer combination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202272088U (en) * 2011-09-22 2012-06-13 柳崇禧 Mobile automatic charging/replacing station for electric vehicles
EP3290305A1 (en) * 2016-09-02 2018-03-07 MAN Truck & Bus AG Road vehicle train combination, in particular as long commercial vehicle combination
CN107323545A (en) * 2017-06-16 2017-11-07 何晓明 A kind of transportation resources of electric traction semitrailer
CN207311083U (en) * 2017-10-27 2018-05-04 中国重汽集团济南动力有限公司 A kind of pure electric vehicle tractor postposition battery pack bracket assembly
CN208393167U (en) * 2018-06-28 2019-01-18 江铃汽车股份有限公司 Electric installation is changed in a kind of pure electric vehicle tractor and semitrailer combination

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