CN115366647A - Power system for electric heavy truck - Google Patents

Power system for electric heavy truck Download PDF

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Publication number
CN115366647A
CN115366647A CN202211087999.9A CN202211087999A CN115366647A CN 115366647 A CN115366647 A CN 115366647A CN 202211087999 A CN202211087999 A CN 202211087999A CN 115366647 A CN115366647 A CN 115366647A
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CN
China
Prior art keywords
battery
power
voltage
power battery
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211087999.9A
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Chinese (zh)
Inventor
常贵可
苑金龙
赵吉刚
周长禄
赵彩跃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
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Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN202211087999.9A priority Critical patent/CN115366647A/en
Publication of CN115366647A publication Critical patent/CN115366647A/en
Pending legal-status Critical Current

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • B60R16/0215—Protecting, fastening and routing means therefor
    • 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
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The invention provides a power system for an electric heavy truck, which relates to the field of new energy heavy trucks and comprises the following components: the power battery system, the driving motor system and the high-voltage accessory assembly are electrically connected; the power battery system includes: the power battery pack, the power battery mounting frame, the battery cooling unit, the battery control system, the battery junction box, the charging port and the high-low voltage wiring harness are fixed above the frame in a back type manner; the drive motor system includes: exchange three-phase induction machine, machine controller, exchange three-phase induction machine mounting means and include: the electric drive bridge type suspension device is suspended at the rear part of the frame in a central drive mode; the motor controller and the high-voltage accessory assembly are modularized, so that central driving and electric drive bridge driving are realized, and the improvement of the dynamic property and the endurance mileage of the whole vehicle is facilitated.

Description

Power system for electric heavy truck
Technical Field
The invention relates to the field of new energy heavy trucks, in particular to a power system for an electric heavy truck.
Background
The electric heavy truck is optimally designed on the traditional heavy truck for saving development cost, the heavy truck overcomes the self-significant problem of the heavy truck and needs to load more cargoes as much as possible, other additional parts can be additionally installed by a user in actual use, but the chassis and the body space of the heavy truck are limited, and the actual requirements of the client are contradicted with the utilization of the power and the space of the whole truck. The existing electric heavy truck power system is divided into a central driving mode and an electric drive bridge driving mode according to different driving modes, but the arrangement of the whole truck power system is different due to the two modes, a power battery and related high-voltage accessories can change along with the arrangement, the two driving modes cannot be taken into consideration, the design cost and the assembly complexity are increased, and the high-voltage accessories comprise a four-in-one controller, an electric air compressor, an electric steering pump, a PTC (positive temperature coefficient) water pump, a low-voltage junction box, a VCU (vertical control Unit) and the like. In the prior art, the power system part is directly exposed to the outer side of the whole vehicle, and the safety of the whole vehicle is affected without protection. The power battery package is whole car power core part, and it is embedded that prior art adopts back formula battery package, frame outside suspension type battery package and frame more, but these modes make other high-voltage component arrange mostly different, guarantee that most high-voltage accessories arrange unchangeably, form high-voltage accessories and arrange the modularization, can save more whole car spaces in order to arrange more batteries, and then increase electric quantity and obtain bigger continuation of the journey mileage. On the other hand, the arrangement and fixing manner of the inner high-low wiring harness also affect the safety of the battery. Therefore, the power system and the arrangement mode of the electric heavy truck are of great importance, the reasonable power system and the arrangement enable the space utilization rate and the integration degree of the whole truck to be higher, the design cost and the complexity in production and assembly can be reduced, and the safety and the economy of the whole truck can be improved due to reasonable matching arrangement.
The Chinese patent name: an integrated form electric transaxle and new forms of energy vehicle, patent no: CN112356618B provides an integrated electric drive axle of a new energy vehicle and the new energy vehicle. The integrated electric drive axle comprises a rear axle and a motor reducer assembly integrated with a motor and a reducer, wherein the motor reducer assembly is arranged on the rear axle, and the axis of the motor is perpendicular to the axis of the rear axle. According to the scheme of the invention, the motor axis and the rear axle axis are vertically arranged, so that the transverse occupied space of the electric drive axle on the chassis can be reduced, and a condition is provided for arranging the motor in the middle of the air chamber of the rear axle, so that the whole space in front of the rear axle can be reserved for arranging a whole vehicle battery and the like. In addition, the motor can also be placed in front of the rear axle, so that the condition that the motor and the shock absorber interfere or the gap is small does not exist, and the chassis arrangement scheme is more flexible. The patent does not consider the influence between high-low voltage interface lines in a power system, and cannot consider the electric drive bridge driving mode.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a power system for an electric heavy truck, which comprises a power battery system, a high-voltage accessory assembly and a driving motor system. The driving motor system and the high-voltage accessory assembly are arranged below the cab in a modularized manner, so that the space utilization rate and the safety of the whole vehicle are improved, and the assembly complexity is reduced. And high-voltage accessory modularized arrangement design can take into account two kinds of modes of central drive and electric drive axle drive, also can make back formula battery package and frame outside suspension type battery package arrange simultaneously, is favorable to improving whole car dynamic nature and continuation of the journey mileage.
The technical scheme adopted by the invention is as follows:
a power system for an electric heavy truck comprising: the power battery system, the driving motor system and the high-voltage accessory assembly are electrically connected; the power battery system includes: the power battery cooling system comprises a power battery pack, a power battery installing frame, a battery cooling unit, a battery control system, a battery junction box, a charging port and high-low voltage wiring harnesses, wherein the power battery installing frame is fixed above a frame in a back type manner, and the power battery pack, the battery cooling unit, the battery control system and the battery junction box are fixed in the power battery installing frame; the drive motor system includes: exchange three-phase induction machine, machine controller, exchange three-phase induction machine mounting means and include: the suspension is suspended at the middle part of the frame in a central driving mode, and is suspended at the rear part of the frame in an electric driving bridge mode; the motor controller and the high-voltage accessory assembly are modularized, and central driving and electric drive bridge driving are achieved.
Further, the high voltage accessory assembly comprises: the system comprises a high-voltage accessory bracket, a four-in-one controller, an electric air compressor, an electric steering pump, a PTC (positive temperature coefficient) water pump, a low-voltage junction box and a VCU (vertical control unit); the high-voltage accessory bracket comprises an upper layer and a lower layer which are fixed on the inner side of the frame, the four-in-one controller, the PTC and the PTC water pump are fixed on the upper layer of the high-voltage accessory bracket, and the electric air compressor, the electric steering pump, the low-voltage junction box and the VCU are fixed on the lower layer of the high-voltage accessory bracket; the four-in-one controller is electrically connected with a battery junction box, an electric air compressor, an electric steering pump, a PTC (positive temperature coefficient) water pump, a low-voltage junction box and a VCU (vertical control unit) of the power battery system and is used for realizing the functions of motor driving, high-voltage power distribution, DC/DC and an oil pump/air pump.
Further, the system also comprises a plurality of wire clamps and a plurality of rubber sheaths.
Furthermore, the power battery pack comprises a plurality of power batteries connected in series, the power batteries are connected into the battery junction box in two groups from left to right, a rectangular pipe is welded outside the power battery mounting frame, and the rectangular pipe is provided with mounting holes; be equipped with battery tray layer in the power battery installation frame, with rectangular pipe fixed connection for place the inside battery of power battery package, battery tray layer is equipped with the round hole, is used for combing and fixed high-low pressure pencil.
Further, power battery package mounting means includes: a back type and a frame outer side suspension type; the power battery pack is fixedly connected with a frame behind a cab in a back type, the power battery pack is fixed in the middle of the chassis in a suspension type outside the frame, and the back type battery pack is arranged on the rear side; the batteries in the suspension type battery pack on the outer side of the frame are connected in series and then are connected in series with the batteries in the back type battery pack. Four corners of the outer edge of the battery inside the power battery pack are provided with bonding mounting holes.
Further, the battery control system is electrically connected with the battery cooling unit and the battery junction box and used for detecting the SOC, the temperature, the voltage and the current of the battery.
Furthermore, the high-voltage accessory assembly is modularly fixed at the front part of the chassis and below the cab; the motor controller of the driving motor system is fixed on the lower layer of the high-voltage accessory support, one end of an external interface of the motor controller is electrically connected with the four-in-one controller and used for providing high voltage for the four-in-one controller, and the other end of the external interface of the motor controller is electrically connected with the alternating current three-phase induction motor and used for driving the motor to rotate.
Furthermore, the battery junction box of the power battery system comprises a battery positive electrode junction port, a battery negative electrode junction port, a battery heating and low-voltage junction port, the internal battery of the power battery pack comprises two groups of batteries, and the battery positive electrode and the battery negative electrode junction port of the battery junction box are connected after the two groups of batteries are connected in series.
Further, the high-low pressure pencil of power battery system includes: the system comprises a power battery high-voltage wire harness, a power battery low-voltage communication wire harness, a power battery heating wire harness, a power battery low-voltage communication wire harness, a control wire and a battery bonding wire; the high-voltage wire harness and the low-voltage wire harness in the power battery pack are separately arranged, so that interference is avoided; each pencil passes through the fixed high-pressure pencil of fastener, and same fastener is shared with power battery low pressure communication pencil to power battery heating pencil, and battery terminal box high-pressure pencil passes through the round hole of battery installation frame to be connected with four unification controllers, and the pencil through the round hole is equipped with the rubber sheath with line footpath matching for fixed and protection pencil. One end of the battery bonding wire is fixedly connected with a battery bonding mounting hole of the internal battery, and the other end of the battery bonding wire is fixedly connected with a mounting hole reserved in the battery mounting frame.
Furthermore, the four-in-one controller is fixed on the left longitudinal beam side of the frame, the PTC water pump and the PTC water pump are fixed on the right longitudinal beam side of the frame, the PTC water pump is connected with the PTC, and the PTC water pump is arranged on the right side of the PTC
The invention has the beneficial effects that:
the high-voltage accessory assembly adopts a modular design, can adopt two modes of a back type battery pack and a suspension type battery pack on the outer side of the frame, and is beneficial to improving the power performance and the endurance of the whole vehicle; the high-voltage accessory part and the power battery system accessory part in the power system are designed in a modular mode so that the electric heavy truck can use various driving modes, the safety of the whole vehicle is improved, and the assembly complexity is reduced; the battery pack is internally arranged in a more reasonable high-low voltage separated arrangement and fixing mode, and the safety of the battery and the whole vehicle is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a power system of an electric heavy truck with a back-mounted battery pack;
FIG. 2 is a schematic diagram of high and low voltage wiring harnesses in a power battery system;
FIG. 3 is a schematic diagram of a power battery system;
FIG. 4 is a schematic diagram of a power system of a back-mounted battery pack and suspension-type battery packs on two sides of a frame;
the system comprises a power battery pack 1, a battery junction box BDU 2, a battery control system BMS 3, battery cooling units 4 and 5, a power battery mounting frame 6, a motor controller 7, a three-phase induction motor 8, a four-in-one controller 9, an electric air compressor 10, an electric steering pump 11, a PTC 12, a PTC water pump 13, a VCU14, a low-voltage junction box 15, a high-voltage accessory bracket 16, a frame 17, a charging port 18, a power battery high-voltage wiring harness 19, a battery positive and negative wiring port 20, a power battery heating wiring harness 21, a power battery low-voltage communication wiring harness 22, a control line 23, a battery positive wiring port 24, a battery negative wiring port 25, a battery heating and low-voltage wiring port 26, a wire clamp 27, a frame outer side suspension type battery pack internal battery 28, a frame outer side suspension type battery pack 29, a rubber sheath 30 and a battery bonding wire 31.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings: in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Moreover, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1 to 4, the embodiment of the application provides a matching arrangement mode of a power system for an electric heavy truck, which comprises a power battery system, a high-voltage accessory assembly and a driving motor system. The driving motor system and the high-voltage accessory assembly are arranged below the cab in a modularized manner, so that the space utilization rate of the whole vehicle and the safety of the whole vehicle are improved, and the assembly complexity can be reduced. And high-voltage accessory modularized arrangement design can take into account two kinds of modes of central drive and electric drive axle drive, also can make back formula battery package and frame outside suspension type battery package arrange simultaneously, is favorable to improving whole car dynamic nature and continuation of the journey mileage.
The power battery system includes a power battery pack 1, a power battery mounting frame 6, battery cooling units 4 and 5, a battery control system BMS 3, a battery terminal block BDU 2, a charging port 18, and a battery internal high and low voltage wiring harness. The power battery mounting frame 6 is mounted on the rear side of the cab in a back type manner, and is mounted on a frame 17 of the vehicle through a base.
In the embodiment of the invention, the power battery mounting frame 6 is designed in a light weight mode, the outside of the power battery mounting frame 6 is in a welding structure with rectangular pipes, mounting holes are reserved on the rectangular pipes, the power battery mounting frame 6 is provided with a battery bracket layer, and the battery bracket layer is fixedly connected with the rectangular pipes by bolts, so that the power battery mounting frame is convenient to mount and dismount; and each battery bracket layer is provided with a round hole for arranging and fixing high-voltage and low-voltage wire harnesses. Namely, in this embodiment, the external structure of the power battery mounting frame 6 is supported by using a rectangular tubular integrated device as a whole frame, the frame is internally provided with a U-shaped steel plate and an L-shaped steel plate which are connected through bolts for supporting the internal battery, the structure can facilitate the disassembly and the installation of the battery, round holes are formed in the U-shaped steel plate and the L-shaped steel plate for processing, the weight can be reduced, and the internal high-voltage wire harness can be conveniently arranged and fixed.
Specifically, in the embodiment of the present invention, the power battery mounting frame 6 is fixedly connected to the longitudinal beams by welding and bolts through a plurality of cross beams, and includes a first column and a second column; the first column and the second column respectively comprise a first level, a second level, a third level, a fourth level, a fifth level and a sixth level; the second and third levels, the third and fourth levels, the fourth and fifth levels of the first column, a battery bracket layer is arranged between the fifth and sixth levels, and a U-shaped steel plate is arranged at the outer edge of the battery bracket layer and fixedly connected with the L-shaped steel plate for arranging and fixing internal wiring harnesses and enhancing the overall structural strength of the power battery mounting frame; a battery anode wiring port 24 is arranged on one side of the bottom of the U-shaped steel plate, a battery cathode wiring port 25 is arranged on the other side of the bottom of the U-shaped steel plate, a round hole is arranged in the middle of the bottom of the U-shaped steel plate, and a battery heating and low-voltage wiring port 26 passes through the round hole; the wire harness is fixed by a wire clamp 27; the first tier of the second column is provided with battery positive and negative connection ports 20. A power battery low-voltage communication wire harness 22 and a power battery heating wire harness 21 are arranged between the U-shaped steel plates; a charging port is formed in the sixth level of the first column; the power battery frame adopts an integrated design, so that the power battery frame is convenient to mount and dismount when a battery is replaced.
The power battery pack 1 is divided into a left group and a right group, is arranged on the L-shaped steel plate through bolts, and is arranged in the power battery mounting frame 6 in a back-to-back layered manner, and wiring ports of the batteries are respectively arranged outwards, so that wiring harnesses can be conveniently arranged; a plurality of batteries of the power battery system are electrically connected through a battery high-voltage wiring harness 19 and are connected in series through a battery junction box 2, and a battery control system BMS 3 collects and monitors battery information of the power battery pack 1. The battery positive and negative wiring port 20 comprises a battery positive wiring port 24, a battery negative wiring port 25 and a battery heating and low-voltage interface 26, two groups of batteries are connected in series, and each group of batteries are connected in series and then are connected into the battery positive and negative wiring port 20 of the battery junction box 2. Battery cooling unit 4 and 5, battery control system BMS 3, battery terminal box BDU 2 all integrate in power battery installation frame 6, and arrange the top layer battery top of power battery package 1 in, and this kind of mode has improved the integrated level and the space utilization of battery system and whole car, and power battery installation frame adopts the steel sheet to seal at last, has improved the security. Battery control system BMS 3 is connected with battery cooling unit 4, 5, battery terminal box BDU 2 electricity respectively for to battery SOC, temperature, voltage, current monitoring control, battery control system BMS 3 respectively with battery cooling unit 4, 5, adopt the low pressure to connect between battery terminal box BDU 2, battery control system BMS 3 is connected with battery terminal box BDU 2 through two control lines 23.
The high-low voltage wire bundle in the power battery system comprises a power battery high-voltage wire bundle 19, a power battery heating wire bundle 21, a power battery low-voltage communication wire bundle 22, a battery bonding wire 31 and a control wire 23. Inside high-pressure pencil of battery package separately arranges with the low pressure pencil and avoids disturbing, and each pencil is fixed through a plurality of fastener 27 of adaptation line footpath, and power battery heating pencil and power battery low pressure communication pencil share same fastener, and the round hole of reserving in the power battery installation frame 6 is passed through to the high-pressure pencil of battery terminal box 2 to four unification controllers 9 to use and fix and protect with a plurality of rubber sheath 30 of line footpath matching. In the embodiment, the power battery high-voltage wiring harness 19, the power battery low-voltage communication wiring harness 22 and the power battery heating wire 21 among the power batteries are respectively connected in series and then connected into the battery junction box 2, and the wire clamp 27 and the rubber sheath 30 are used for fixing and protecting various wiring harnesses to avoid abrasion and collision, so that the trend is more reasonable and the economical efficiency is met. Battery bonding wire 31 is used for protecting the internal battery, and the four corners of internal battery outer fringe all has a bonding mounting hole, and bonding mounting hole is connected to battery bonding wire 31 one end, and the mounting hole department of reserving on each layer of crossbeam of power battery installation frame is connected to the other end, and the inside battery of each piece of power battery package all needs a battery bonding wire 31.
The high-voltage accessory assembly comprises a high-voltage accessory support 16, a four-in-one controller 9, an electric air compressor 10, an electric steering pump 16, a PTC 12, a PTC water pump 13, a low-voltage junction box 15, a VCU14 and the like, and the high-voltage accessory electric appliance part is reasonably arranged on the high-voltage accessory support 16 according to the actual requirements of the whole vehicle. High-pressure annex support 16 divide into about two-layer, it arranges in the frame inboard to wholly use the long bolt to hang, place in whole car chassis front portion, the driver's cabin below, four unification controllers 9, PTC 12 and PTC water pump 13 are arranged in high-pressure annex support 16 upper strata, the all kinds of interfaces of four unification controllers 9 are towards right longeron direction, four unification controllers 9 are located frame left side longeron side, PTC 12 is fixed in frame right side longeron side with PTC water pump 13, this kind of four unification controllers 9 of being convenient for are connected with PTC 12, wherein PTC water pump 13 is connected with PTC 12, PTC water pump 13 is arranged in PTC 12's right side. The electric air compressor 10, the electric steering pump 11, the low-voltage junction box 15 and the VCU14 are arranged on the lower layer of the high-voltage accessory bracket 16. The four-in-one controller 9 has four functions of motor driving, high-voltage power distribution, DC/DC and an oil pump/air pump, one end of the four-in-one controller 9 is electrically connected with the battery junction box BDU 2, and the other end of the four-in-one controller is electrically connected with the rest electric appliances of the high-voltage accessories.
The driving motor system comprises a three-phase current induction motor 8 and a motor controller 7, and the high-voltage accessory assembly and the motor controller 7 in the driving motor system are in modular arrangement design. The AC three-phase induction motor 8 is suspended in the middle of the frame in a central driving mode, and the AC three-phase induction motor can also be suspended in an electric driving bridge mode and at the rear part of the frame; the motor controller 7 is arranged on a high-voltage accessory support 16 below the cab, the external interface of the motor controller 7 faces backwards, one end of the motor controller obtains high voltage by the four-in-one controller 9, and the other end of the motor controller is connected to the alternating current three-phase induction motor 8 to output three-phase power to drive the motor to rotate, so that the whole vehicle obtains driving force.
In the embodiment of the invention, the high-voltage accessory assembly and the motor controller 7 are in modular arrangement design, the structure is compact, the arrangement is reasonable, the space utilization rate of the whole vehicle is improved, the high-voltage accessory assembly and the safety of the whole vehicle are improved by arranging the high-voltage accessory assembly and the motor controller 7 below a cab, the difficulty in assembling different vehicle types is reduced by the modular design, the production efficiency is improved, and particularly, the high-voltage accessory assembly and the motor controller 7 are modularized, so that two modes of central driving and electric drive bridge driving can be considered. In the specific application, the arrangement modes of the high-voltage accessory assembly, electrical accessories in the assembly and the motor controller are kept unchanged, the corresponding motor controller is adjusted, the electric drive axle assembly is added, the motor controller is integrated with the drive axle, the motor controller is connected and suspended on the inner side of the middle rear part of the frame 17 through bolts, and the 8 three-phase electric high-voltage wire harness of the alternating-current three-phase induction motor is electrically connected with the drive axle assembly from the left inner side and the right inner side of the frame 17, so that the electric drive axle driving can be realized.
The arrangement of the high-voltage accessory assembly is unchanged, the power system can adopt two battery pack forms of a back type battery pack and a suspension type battery pack outside the frame, and the back type battery pack is still arranged behind the cab and welded on the frame 17; frame 17 outside suspension type battery package 29 is placed in the chassis middle part, and back formula battery package rear side adopts the bolt fastening in the outside both sides of frame 17, and the inside battery 28 of frame outside suspension type battery package 29 establishes ties, and is concrete, and two sets of about the inside battery 28 of frame outside suspension type battery package adopts equally, and two sets of batteries of back formula battery package are established ties respectively again to both sides battery, and the quantity and the power size of battery are optional in practical application. The arrangement mode in the embodiment increases the total volume and the electric quantity of the battery, so that the cruising ability is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. The utility model provides a driving system for electronic heavy truck which characterized in that includes: the power battery system, the driving motor system and the high-voltage accessory assembly are electrically connected; the power battery system includes: power battery package, power battery installation frame, battery cooling unit, battery control system, battery terminal box, charge mouthful and high-low voltage wiring harness, power battery installation frame adopts the back formula to be fixed in the frame top, in power battery package, battery cooling unit, battery control system, the battery terminal box were fixed in power battery installation frame, power battery package arrangement mode included: the back type and the outer side of the frame are suspended, and the rear type and the outer side of the frame are used for improving the power performance and the endurance mileage of the whole vehicle; the drive motor system includes: exchange three-phase induction machine, machine controller, exchange three-phase induction machine mounting means and include: the electric drive type bicycle frame is suspended in the middle of the bicycle frame in a central drive mode, and is suspended in the rear of the bicycle frame in an electric drive bridge mode; the motor controller is modularized with the high-voltage accessory assembly and is used for realizing central driving or electric drive axle driving of the vehicle.
2. The power system of claim 1, wherein the high voltage accessory assembly comprises: the system comprises a high-voltage accessory bracket, a four-in-one controller, an electric air compressor, an electric steering pump, a PTC (positive temperature coefficient) water pump, a low-voltage junction box and a VCU (vertical control unit); the high-voltage accessory bracket comprises an upper layer and a lower layer which are fixed on the inner side of the frame, the four-in-one controller, the PTC and the PTC water pump are fixed on the upper layer of the high-voltage accessory bracket, and the electric air compressor, the electric steering pump, the low-voltage junction box and the VCU are fixed on the lower layer of the high-voltage accessory bracket; the four-in-one controller is electrically connected with a battery junction box, an electric air compressor, an electric steering pump, a PTC (positive temperature coefficient) water pump, a low-voltage junction box and a VCU (vertical control unit) of the power battery system and is used for realizing the functions of motor driving, high-voltage power distribution, DC/DC and an oil pump/air pump.
3. The power system for an electric heavy truck as claimed in claim 1, wherein the system further comprises a plurality of wire clamps, a plurality of rubber sheaths for securing and protecting the wire harness.
4. The power system for the electric heavy truck as claimed in claim 1, wherein the power battery pack comprises a plurality of power batteries, and the power batteries are connected in series into the battery junction box in two groups from left to right; a rectangular pipe is welded outside the power battery installation frame and is provided with an installation hole; be equipped with battery tray layer in the power battery installation frame, with rectangular pipe fixed connection for place the inside battery of power battery package, battery tray layer is equipped with the round hole, is used for combing and fixed high-low pressure pencil.
5. The power system for electric heavy truck as claimed in claim 1, wherein the power battery pack is installed in a manner comprising: a back type and a frame outer side suspension type; the power battery pack is fixedly connected with a frame behind a cab in a back type, the power battery pack is fixed in the middle of the chassis in a suspension type outside the frame, and the back type battery pack is arranged on the rear side; batteries inside the suspension type battery pack on the outer side of the frame are connected in series and then are connected in series with batteries of the back type battery pack; four corners of the outer edge of the battery inside the power battery pack are provided with bonding mounting holes.
6. The power system for the electric heavy truck according to claim 4, wherein the battery control system is electrically connected to the battery cooling unit and the battery junction box for detecting the battery SOC, the temperature, the voltage and the current.
7. The power system for an electric heavy truck according to claim 2, wherein the high-voltage accessory assembly is modularly fixed at the front part of the chassis and under the cab; the motor controller of the driving motor system is fixed on the lower layer of the high-voltage accessory support, one end of an external interface of the motor controller is electrically connected with the four-in-one controller and used for providing high voltage for the four-in-one controller, and the other end of the external interface of the motor controller is electrically connected with the alternating current three-phase induction motor and used for driving the motor to rotate.
8. The power system for the electric heavy truck as claimed in claim 1, wherein the battery junction box of the power battery system comprises a battery positive electrode junction port, a battery negative electrode junction port, and a battery heating and low voltage junction port, the internal battery of the power battery pack comprises two groups of batteries, and after the two groups of batteries are connected in series, the battery positive electrode and the battery negative electrode junction port connected to the battery junction box are connected.
9. The power system for the electric heavy truck according to claim 1 or 5, characterized in that the high-low voltage wiring harness of the power battery system comprises: the system comprises a power battery high-voltage wire harness, a power battery low-voltage communication wire harness, a power battery heating wire harness, a control wire and a battery bonding wire; the high-voltage wire harness and the low-voltage wire harness in the power battery pack are separately arranged, so that interference is avoided; each wire harness fixes a high-voltage wire harness through a wire clamp, the power battery heating wire harness and the power battery low-voltage communication wire harness share the same wire clamp, the high-voltage wire harness of the battery junction box is connected with the four-in-one controller through a round hole of a battery installation frame, and the wire harness passing through the round hole is provided with a rubber sheath matched with the wire diameter and used for fixing and protecting the wire harness; one end of the battery bonding wire is fixedly connected with a bonding mounting hole of the internal battery, and the other end of the battery bonding wire is fixedly connected with a mounting hole reserved in the power battery mounting frame.
10. The power system for an electric heavy truck according to claim 2, wherein the four-in-one controller is fixed to a left side of the frame, the PTC and the PTC water pump are fixed to a right side of the frame, the PTC water pump is connected to the PTC, and the PTC water pump is disposed on the right side of the PTC.
CN202211087999.9A 2022-09-07 2022-09-07 Power system for electric heavy truck Pending CN115366647A (en)

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Application Number Priority Date Filing Date Title
CN202211087999.9A CN115366647A (en) 2022-09-07 2022-09-07 Power system for electric heavy truck

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Application Number Priority Date Filing Date Title
CN202211087999.9A CN115366647A (en) 2022-09-07 2022-09-07 Power system for electric heavy truck

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CN115366647A true CN115366647A (en) 2022-11-22

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CN202211087999.9A Pending CN115366647A (en) 2022-09-07 2022-09-07 Power system for electric heavy truck

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117141218A (en) * 2023-10-31 2023-12-01 江苏速豹动力科技有限公司 Power battery system and vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117141218A (en) * 2023-10-31 2023-12-01 江苏速豹动力科技有限公司 Power battery system and vehicle
CN117141218B (en) * 2023-10-31 2024-02-23 江苏速豹动力科技有限公司 Power battery system and vehicle

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