CN111555425A - Vehicle bipolar column dual-power parallel system and control method - Google Patents

Vehicle bipolar column dual-power parallel system and control method Download PDF

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Publication number
CN111555425A
CN111555425A CN202010412291.0A CN202010412291A CN111555425A CN 111555425 A CN111555425 A CN 111555425A CN 202010412291 A CN202010412291 A CN 202010412291A CN 111555425 A CN111555425 A CN 111555425A
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China
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interface
battery
energy storage
system controller
storage battery
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CN202010412291.0A
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Chinese (zh)
Inventor
杨金亮
郭晓勐
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Sinotruk Jinan Power Co Ltd
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Sinotruk Jinan Power Co Ltd
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Priority to CN202010412291.0A priority Critical patent/CN111555425A/en
Publication of CN111555425A publication Critical patent/CN111555425A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • 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
    • B60R16/03—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 for supply of electrical power to vehicle subsystems or for
    • B60R16/0315—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 for supply of electrical power to vehicle subsystems or for using multiplexing techniques
    • 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
    • B60R16/03—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 for supply of electrical power to vehicle subsystems or for
    • B60R16/033—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 for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4264—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing with capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1446—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in response to parameters of a vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention provides a vehicle bipolar column dual-power parallel system and a control method, wherein the system comprises: the system comprises a capacitor, a battery system controller, an energy storage battery, a battery heating film, a heating relay, an energy storage battery relay, a DCDC converter, a battery system positive terminal, a battery system negative terminal, an emergency switch and a whole vehicle control signal interface; the capacitor is used as a starting power supply and a stabilized voltage power supply, and the energy storage battery is used as a parking power supply. When the engine is started, the energy storage battery is separated from the capacitor, and the capacitor is used for providing electric energy for the whole vehicle. When the starting is needed for multiple times, the energy storage battery is used for carrying out controllable electric energy transmission on the capacitor. And after the starting is finished, the relay is switched on to charge the energy storage battery by the generator. After the whole vehicle is powered off, the relay keeps the on state and outputs electric energy to the outside together. The electric quantity stored by the capacitor is extremely small, so that the electric quantity of the energy storage battery cannot be influenced. The full utilization of the storage battery is ensured, and the use safety of the storage battery and the use safety of the whole vehicle are ensured.

Description

Vehicle bipolar column dual-power parallel system and control method
Technical Field
The invention relates to the technical field of storage batteries, in particular to a bipolar column dual-power parallel system for a vehicle and a control method.
Background
At present, the automobile industry is gradually developing, and with the increase of environmental protection, certain limitation is caused to fuel automobiles. Therefore, vehicles with new energy power, electric vehicles or vehicles with fuel oil and electric power mixed are required to be developed widely.
The existing new energy vehicles adopt lead storage batteries, the capacity, the volume and the weight of the lead storage batteries are large, the service life of the lead storage batteries is still short relative to the service life of the whole vehicle, and the development of the new energy vehicles is limited. And thirdly, the double-battery systems are all three wiring terminals, the cathodes of the two batteries are grounded, the anodes of the two batteries are respectively connected with different loads of the whole vehicle, the structure is complex, and the total amount is increased.
The scheme for replacing the lead storage battery is that a lithium battery is adopted, but the cold starting performance of the lithium battery in a low-temperature environment is poor, the cold starting time is long, and the requirement that a user uses a parking air conditioner and other high-power parking electric appliances for a long time cannot be met. Therefore, the storage battery for the vehicle is short in service life in the using process, the storage battery is damaged, the new energy vehicle cannot be normally used, and the user experience is influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a bipolar column dual-power parallel system for a vehicle, which comprises: the system comprises a capacitor, a battery system controller, an energy storage battery, a battery heating film, a heating relay, an energy storage battery relay, a DCDC converter, a battery system positive terminal, a battery system negative terminal, an emergency switch and a whole vehicle control signal interface;
the capacitor positive electrode is respectively connected with the output end of the DCDC converter, the first contact end of the energy storage battery relay, the first contact end of the heating relay and a system output positive electrode wiring terminal;
the negative electrode of the capacitor is respectively connected with the negative electrode of the energy storage battery, the negative electrode of the DCDC converter, the negative electrode of the control coil of the energy storage battery relay, the negative electrode of the control coil of the heating relay, the battery heating film, the emergency switch and a system output negative electrode binding post;
the anode of the energy storage battery is respectively connected with the input end of the DCDC converter and the second contact end of the energy storage battery relay;
the positive electrode of the battery heating film is connected to the second contact terminal of the heating relay through a lead;
the battery system controller is respectively connected with the anode of the control coil of the energy storage battery relay, the anode of the control coil of the heating relay, the control end of the DCDC converter, the emergency switch, the capacitor, the energy storage battery and the control signal interface of the whole vehicle.
It should be further noted that the connection modes of the interface lines of the battery system controller are respectively as follows: the interface is connected to a control interface end of the DCDC converter through a control wire harness;
the interface is connected to a control coil end of the energy storage battery relay through a control wire harness;
the interface is connected to the positive pole of a control coil of the heating relay through a control wire harness;
the interface is connected to the positive electrode of a control coil of the energy storage battery through a control wire harness;
the interface is connected to a CAN low signal of a vehicle control signal interface through a control wire harness;
the interface is connected to a CAN high signal of a vehicle control signal interface through a control wire harness;
the interface is connected to a starting output signal of a vehicle control signal interface through a control wire harness;
the interface is connected to a starting input signal of a vehicle control signal interface through a control wire harness;
the interface is connected to an ignition signal of a vehicle control signal interface through a control wire harness;
the interface is connected to a generator excitation signal of a vehicle control signal interface through a control wire harness;
the interface is connected to the control interface of the capacitor through a control wire harness;
the interface is connected to the emergency switch through a control harness.
It is further noted that the energy storage module is formed by connecting lithium ion battery cells;
the capacitor is formed by connecting super capacitor monomers.
The invention also provides a vehicle bipolar column dual-power parallel control method, which comprises the following steps:
the battery system controller monitors whether the system has faults or not, if the system has no faults, an interface of the battery system controller controls the energy storage battery relay to be switched on, controls the heating relay to be switched off, and controls the DCDC converter to be in standby;
the positive pole of the energy storage battery is connected in parallel with the positive pole of the capacitor through an energy storage battery relay, is connected to a system output positive pole binding post and outputs the energy to the outside together.
It is further noted that the method further comprises:
when an interface of the battery system controller receives an external ignition signal, the system enters an activation mode, and the battery system controller operates the flow of an initial state;
when an interface of the battery system controller receives an external starting input signal, the interface of the battery system controller controls the energy storage battery relay to be in a disconnected state, meanwhile, the control interface does not output a generator excitation signal, the interface of the battery system controller outputs a starting output signal to the outside, and the signal controls a starter to work.
It is further noted that the method further comprises:
the battery system controller monitors whether the engine is started through the interface and the interface, and if the engine is started successfully, the interface of the battery system controller stops outputting a starting output signal to the outside;
if the engine is not started successfully and the capacitor voltage is lower than Vdc, stopping outputting a starting output signal to the outside by an interface of the battery system controller;
after an external starting input signal connected with an interface of the battery system controller disappears, controlling a DCDC converter to start by the interface of the battery system controller, and charging the capacitor by the energy storage battery;
the battery system controller monitors the charging process, and if the interface is connected with an external starting input signal in the charging process, the interface of the battery system controller does not output a starting output signal to the outside;
after charging, if the interface is connected with an external starting input signal, the interface of the battery system controller outputs a starting output signal to the outside;
when the engine is in a running state, the battery system controller monitors the pressure difference between the capacitor and the energy storage battery, when the pressure difference is smaller than a certain value, the interface of the battery system controller controls the energy storage battery relay to be in a switch-on state, and the battery system controller controls the interface to output a generator excitation signal.
It is further noted that the method further comprises:
after the engine is started, when the temperature of the energy storage battery is lower than a charging threshold value, the battery system controller controls the relay of the energy storage battery to be in a disconnected state;
the battery system controller controls the heating relay to be in a connection state;
the generator supplies power to the battery heating film through the system output positive terminal and the heating relay, and the battery heating film heats the energy storage battery;
when the temperature of the energy storage battery is higher than a charging threshold value, the battery system controller controls the heating relay to be in a disconnected state, and battery heating is finished;
after the battery is heated, the generator charges the energy storage battery; the voltage of the generator and the capacitor is higher than that of the energy storage battery, so that the capacitor is discharged;
and (3) a capacitor discharging process: the battery system controller stops outputting the generator excitation signal, and the generator stops generating electricity;
the electric appliance of the whole vehicle provides electric energy through the capacitor, and when the voltage of the capacitor is reduced to the voltage difference with the energy storage battery, which is smaller than a threshold value, the battery system controller controls the relay of the energy storage battery to be in a switch-on state; the battery system controller outputs a generator excitation signal, and the generator generates electricity.
It is further noted that the method further comprises:
when the rotating speed of the engine is zero, the battery system controller judges that the vehicle is in a static state, and the bipolar column dual-power parallel system for the vehicle is in an initial state;
when the electric appliance of the whole vehicle is used for a long time and the capacitor voltage is reduced by a protection threshold value, the battery system controller controls the energy storage battery relay to be in a disconnected state, the bipolar column dual-power parallel system for the vehicle is in a dormant state, and the battery system controller is in the dormant state;
the capacitor supplies power to the electric appliances for supporting the whole vehicle until the voltage of the capacitor is reduced to the lowest working voltage of the electric appliances for the whole vehicle, and the electric appliances are stopped;
if the bipolar column dual-power parallel system for the vehicle in the power shortage state is used again, the emergency switch is pressed to start the engine, the battery system controller inputs an emergency signal, the battery system controller controls the DCDC converter to work, and the energy storage battery charges the capacitor;
after charging is completed, the battery system controller is in an emergency state;
after the emergency state lasts for a preset time, if the battery system controller does not receive an external starting input signal, the battery system controller controls the automotive bipolar column dual-power parallel system to enter the dormant state again.
It is further noted that the method further comprises:
if the energy storage battery, the capacitor and the DCDC converter have faults and cannot work, the battery system controller judges that the bipolar column dual-power parallel system for the vehicle is in a fault mode;
if the energy storage battery is in the fault mode, the battery system controller controls the energy storage battery relay to be in the off state and then controls the heating relay to be in the off state;
the whole vehicle cannot obtain a power supply through the positive terminal of the battery system and the negative terminal of the battery system; the vehicle is in a power-deficient state; a storage battery is required to be externally arranged for rescue treatment;
when the externally-assembled battery is connected to the positive terminal of the battery system and the negative terminal of the battery system, and the battery system controller receives an ignition signal, the vehicle double-pole double-power-supply parallel system enters a rescue starting mode.
If the system is in the rescue starting mode, the battery system controller controls the energy storage battery relay to be in the disconnection state and then controls the heating relay to be in the disconnection state;
when the battery system controller receives an external starting input signal, the battery system controller outputs a starting output signal to the outside.
It is further noted that the method further comprises:
after the vehicle is started, the battery system controller monitors whether the bipolar column dual-power parallel system for the vehicle is still in a fault mode;
if the vehicle is still in the fault mode, the system controller outputs fault mode information, and the whole vehicle instrument displays a warning symbol to remind a driver.
According to the technical scheme, the invention has the following advantages:
the invention relates to a vehicle bipolar column dual-power parallel system, which adopts a capacitor as a starting power supply and a voltage-stabilized power supply, and an energy storage battery as a parking power supply. When the engine is started, the energy storage battery is separated from the capacitor, and only the capacitor is used for providing electric energy for the whole vehicle. When the multi-time starting is needed, the energy storage battery is subjected to controllable electric energy transmission to the capacitor through the unidirectional DCDC converter. And after the starting is finished, the relay is switched on to charge the energy storage battery by the generator. After the whole vehicle is powered off, the relay keeps the on state and outputs electric energy to the outside together. The electric quantity stored by the capacitor is extremely small, so that the electric quantity of the energy storage battery cannot be influenced.
The invention also relates to the control and output of the system to the storage battery in the modes of low-temperature battery heating state, parking power utilization state, fault mode state and the like, thereby ensuring the full utilization of the storage battery, prolonging the service life of the storage battery, and ensuring the use safety of the storage battery and the use safety of the whole vehicle.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a bipolar column dual-power parallel system for a vehicle.
Detailed Description
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
The bipolar column dual-power parallel system for the vehicle can be applied to vehicles such as cars, trucks and engineering machinery, can relate to electric vehicles, and can also relate to oil-electric hybrid vehicles.
As shown in fig. 1, the method specifically includes: the system comprises a capacitor 1, a battery system controller 2, an energy storage battery 3, a battery heating film 4, a heating relay 5, an energy storage battery relay 6, a DCDC converter 7, a battery system positive terminal 8, a battery system negative terminal 9, an emergency switch 10 and a whole vehicle control signal interface 11; the positive electrode of the capacitor 1 is respectively connected with the output end of the DCDC converter 7, the first contact end of the energy storage battery relay 6, the first contact end of the heating relay 5 and a system output positive terminal 8; the negative electrode of the capacitor 1 is respectively connected with the negative electrode of the energy storage battery 3, the negative electrode of the DCDC converter 7, the negative electrode of the control coil of the energy storage battery relay 6, the negative electrode of the control coil of the heating relay 5, the battery heating film 4, the emergency switch 10 and a system output negative terminal 9; the positive electrode of the energy storage battery 3 is respectively connected with the input end of the DCDC converter 7 and the second contact end of the energy storage battery relay 6; the positive electrode of the battery heating film 4 is connected to the second contact terminal of the heating relay 5 through a wire; the battery system controller 2 is respectively connected with the anode of the control coil of the energy storage battery relay 6, the anode of the control coil of the heating relay 5, the control end of the DCDC converter 7, the emergency switch 10, the capacitor 1, the energy storage battery 3 and the control signal interface 11 of the whole vehicle. In fig. 1, a solid line part is a conductor electrical connection structure between system parts, a dashed line part is a system control line connection structure, and a two-dot chain line part is an internal structure of the entire bipolar column dual-power parallel system for a vehicle.
The connection modes of the interface wire numbers of the battery system controller 2 are respectively as follows: the interface 2.1 is connected to a control interface end of the DCDC converter 7 through a control wire harness;
the interface 2.2 is connected to a control coil end of the energy storage battery relay 6 through a control wire harness; the interface 2.3 is connected to the positive pole of a control coil of the heating relay 5 through a control wire harness; the interface 2.4 is connected to the positive pole of a control coil of the energy storage battery 3 through a control wire harness; the interface 2.5 is connected to a CAN low signal of the vehicle control signal interface 10 through a control wire harness; the interface 2.6 is connected to the CAN high signal of the vehicle control signal interface 10 through a control wire harness; the interface 2.7 is connected to a starting output signal of the vehicle control signal interface 10 through a control wire harness;
the interface 2.8 is connected to a starting input signal of a vehicle control signal interface 2.8 through a control wire harness; the interface 2.9 is connected to an ignition signal of the whole vehicle control signal interface 10 through a control wire harness; the interface 2.10 is connected to a generator excitation signal of the whole vehicle control signal interface 10 through a control wire harness; the interface 2.11 is connected to the control interface of the capacitor 1 by a control harness; the interface 2.12 is connected to the emergency switch 10 by a control harness.
The energy storage module is formed by connecting lithium ion cell monomers; the capacitor 1 is formed by connecting super capacitor monomers.
The battery system controller may include one or more processors executing, for example, one or more Digital Signal Processors (DSPs), general purpose microprocessors, application specific integrated circuits ASICs, Field Programmable Gate Arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Thus, the term "processor," as used herein, may refer to any of the foregoing structure or any other structure more suitable for implementing the techniques described herein. In addition, in some aspects, the functionality described in this disclosure may be provided in software modules and hardware modules.
The techniques described for the system may be implemented in hardware, software, firmware, or any combination thereof. Various features are described as modules, units or components that may be implemented together in an integrated logic device or separately as discrete but interoperable logic devices or other hardware devices. In some cases, various features of an electronic circuit may be implemented as one or more integrated circuit devices, such as an integrated circuit chip or chipset.
The invention adopts the capacitor as a starting power supply and a stabilized voltage power supply, and the energy storage battery as a parking power supply. When the engine is started, the energy storage battery is separated from the capacitor, and only the capacitor is used for providing electric energy for the whole vehicle. When the multi-time starting is needed, the energy storage battery is subjected to controllable electric energy transmission to the capacitor through the unidirectional DCDC converter. And after the starting is finished, the relay is switched on to charge the energy storage battery by the generator. After the whole vehicle is powered off, the relay keeps the on state and outputs electric energy to the outside together. The electric quantity stored by the capacitor is extremely small, so that the electric quantity of the energy storage battery cannot be influenced.
Based on the system, the invention also provides a vehicle bipolar column dual-power parallel control method, and the specific system is in an initial state:
the battery system controller 2 monitors whether the system has faults or not, if no serious faults exist, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be switched on, controls the heating relay 5 to be switched off, and controls the DCDC converter 7 to be in standby. The positive pole of the energy storage battery 3 is connected in parallel with the positive pole of the capacitor 1 through an energy storage battery relay 6, is connected to a system output positive pole binding post 8, and outputs to the outside together.
When the system is in an engine starting state:
when the 2.9 interface of the battery system controller 2 receives an external ignition signal, the system enters an activation mode, and the battery system controller runs the flow of the initial state. When the 2.8 interface of the battery system controller 2 receives an external starting input signal, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a disconnected state, and simultaneously controls the 2.10 interface not to output a generator excitation signal, and then the 2.7 interface of the battery system controller 2 outputs a starting output signal to the outside, and the signal controls the starter to work.
The battery system controller 2 monitors whether the engine is started through the 2.5 and 2.6 interfaces, and if the engine is started successfully, the 2.7 interface of the battery system controller 2 stops outputting the starting output signal to the outside. If the engine is not successfully started and the capacitor voltage is lower than 20Vdc, the 2.7 interface of the battery system controller 2 stops outputting the start output signal to the outside. After the external start input signal connected to the 2.8 interface of the battery system controller 2 disappears, the DCDC converter 7 is controlled to start by the 2.1 interface of the battery system controller 2, and the energy storage battery 3 charges the capacitor 1. The battery system controller 2 monitors the passing of the charging process, and if the 2.8 interface is connected with an external starting input signal in the charging process, the 2.7 interface of the battery system controller 2 does not output a starting output signal to the outside. After the charging is completed, if the 2.8 interface is connected with an external start input signal, the 2.7 interface of the battery system controller 2 outputs a start output signal to the outside.
When the engine is in a running state, the battery system controller 2 monitors the pressure difference between the capacitor 1 and the energy storage battery 3, when the pressure difference is smaller than a certain value, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a switch-on state, and then the battery system controller 2 controls the 2.10 interface to output a generator excitation signal.
When the system is in a low-temperature battery heating state:
after the engine is started, when the temperature of the energy storage battery 3 is lower than a charging threshold value, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a disconnected state. The 2.3 interface of the battery system controller 2 controls the heating relay 5 to be in the on state. The generator supplies power to the battery heating film 4 through the system output positive terminal 8 and the heating relay 5, and the battery heating film 4 heats the energy storage battery 3. When the temperature of the energy storage battery 3 is higher than the charging threshold value, the 2.3 interface of the battery system controller 2 controls the heating relay 5 to be in a disconnected state, and the battery heating is finished.
After the battery is heated, the generator is required to charge the energy storage battery 3. Because the voltage of the generator and the capacitor 1 is higher than the voltage of the energy storage battery 3, the capacitor 1 needs to be discharged, and the energy storage battery relay 6 can be closed only when the difference value between the voltage of the capacitor 1 and the voltage of the energy storage battery 3 is within a threshold value.
Discharging process of the capacitor 1: the 2.10 interface of the battery system controller 2 stops outputting the generator excitation signal, and the generator stops generating power. The electric appliance for the whole vehicle provides electric energy through the capacitor 1, and when the voltage of the capacitor 1 is reduced to the voltage difference with the energy storage battery 3, which is smaller than a threshold value, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a switch-on state. Then, the 2.10 interface of the battery system controller 2 outputs a generator excitation signal, and the generator generates power.
When the system is in a parking power utilization state:
the engine speed is zero, the battery system controller 2 judges that the vehicle is in a static state, and the bipolar column dual-power parallel system for the vehicle is in an initial state. When the electric appliance for the whole vehicle is used for a long time, the voltage of the capacitor 1 is reduced to the voltage and the electric quantity of the energy storage battery 3, if the voltage and the electric quantity are reduced to the protection threshold value, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a disconnected state, the bipolar column dual-power parallel system for the vehicle is in a dormant state, and the battery system controller 2 is in the dormant state. The capacitor 1 supports the electric appliance of the whole vehicle to supply power until the voltage of the capacitor 1 is reduced to the lowest working voltage of the electric appliance of the whole vehicle, and the electric appliance is stopped.
If the bipolar column dual-power parallel system for the vehicle in the power-deficient state needs to be used again, if an engine is started, the emergency switch 10 needs to be pressed, the 2.12 interface of the battery system controller 2 inputs an emergency signal, the 2.1 interface of the battery system controller 2 controls the DCDC converter 7 to work, and the energy storage battery 3 charges the capacitor 1. After the charging is completed, the battery system controller 2 is in an emergency state. The emergency state lasts for 60 seconds, and if the 2.8 interface of the battery system controller 2 does not receive an external starting input signal in the period, the battery system controller 2 controls the automotive bipolar column dual-power parallel system to enter the dormant state again.
When the system is in a fault mode state:
if the energy storage battery 3, the capacitor 1 and the DCDC converter 7 have serious faults and cannot work, the battery system controller 2 judges that the bipolar column dual-power parallel system for the vehicle is in a fault mode.
Under the failure mode, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in the off state, and the 2.3 interface controls the heating relay 5 to be in the off state. The whole vehicle cannot obtain power supply through the positive terminal 8 and the negative terminal 9 of the battery system. At this time, the vehicle exhibits a power-deficient state. And a storage battery is required to be externally arranged for rescue treatment. When the externally-assembled battery is connected to the positive terminal 8 of the battery system and the negative terminal 9 of the battery system, and meanwhile, the 2.9 interface of the battery system controller 2 receives an ignition signal, the vehicle bipolar column dual-power parallel system enters a rescue starting mode.
Under the rescue starting mode, the 2.2 interface of the battery system controller 2 controls the energy storage battery relay 6 to be in a disconnected state, and the 2.3 interface controls the heating relay 5 to be in a disconnected state. When the 2.8 interface of the battery system controller 2 receives the external start input signal, the 2.7 interface of the battery system controller 2 outputs the start output signal to the outside.
In the method, after the start is completed, the battery system controller 2 monitors whether the bipolar column dual-power parallel system for the vehicle is still in a fault mode. If the vehicle is still in the fault mode, the 2.6 and 2.5 interfaces of the system controller 2 output fault mode information, and the whole vehicle instrument displays a warning sign sheet to remind a driver of maintaining as soon as possible.
The methods and apparatuses of the present invention may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a bipolar post dual power supply parallel system for vehicle which characterized in that includes: the system comprises a capacitor (1), a battery system controller (2), an energy storage battery (3), a battery heating film (4), a heating relay (5), an energy storage battery relay (6), a DCDC converter (7), a battery system positive terminal (8), a battery system negative terminal (9), an emergency switch (10) and a whole vehicle control signal interface (11);
the positive electrode of the capacitor (1) is respectively connected with the output end of the DCDC converter (7), the first contact end of the energy storage battery relay (6), the first contact end of the heating relay (5) and a system output positive terminal (8);
the negative electrode of the capacitor (1) is respectively connected with the negative electrode of the energy storage battery (3), the negative electrode of the DCDC converter (7), the negative electrode of the control coil of the energy storage battery relay (6), the negative electrode of the control coil of the heating relay (5), the battery heating film (4), the emergency switch (10) and a system output negative terminal (9);
the anode of the energy storage battery (3) is respectively connected with the input end of the DCDC converter (7) and the second contact end of the energy storage battery relay (6);
the positive electrode of the battery heating film (4) is connected to a second contact terminal of the heating relay (5) through a lead;
the battery system controller (2) is respectively connected with the anode of a control coil of the energy storage battery relay (6), the anode of a control coil of the heating relay (5), the control end of the DCDC converter (7), the emergency switch (10), the capacitor (1), the energy storage battery (3) and the whole vehicle control signal interface (11).
2. The bipolar post dual-power parallel system for vehicles of claim 1,
the connection modes of the interface wire numbers of the battery system controller (2) are respectively as follows: the interface (2.1) is connected to a control interface end of the DCDC converter (7) through a control wiring harness;
the interface (2.2) is connected to a control coil end of an energy storage battery relay (6) through a control wire harness;
the interface (2.3) is connected to the positive pole of a control coil of the heating relay (5) through a control wire harness;
the interface (2.4) is connected to the positive pole of a control coil of the energy storage battery (3) through a control wire harness;
the interface (2.5) is connected to a CAN low signal of a vehicle control signal interface (10) through a control wire harness;
the interface (2.6) is connected to a CAN high signal of a vehicle control signal interface (10) through a control wire harness;
the interface (2.7) is connected to a starting output signal of the vehicle control signal interface (10) through a control wire harness;
the interface (2.8) is connected to a starting input signal of the vehicle control signal interface (2.8) through a control wire harness;
the interface (2.9) is connected to an ignition signal of a vehicle control signal interface (10) through a control wire harness;
the interface (2.10) is connected to a generator excitation signal of the whole vehicle control signal interface (10) through a control wire harness;
the interface (2.11) is connected to the control interface of the capacitor (1) through a control wire harness;
the interface (2.12) is connected to the emergency switch (10) by a control harness.
3. The bipolar post dual-power parallel system for vehicles of claim 1 or 2,
the energy storage module is formed by connecting lithium ion cell monomers;
the capacitor (1) is formed by connecting super capacitor monomers.
4. A bipolar column dual-power parallel control method for a vehicle, characterized in that the bipolar column dual-power parallel system for a vehicle according to any one of claims 1 to 3 is adopted;
the method comprises the following steps:
the battery system controller monitors whether the system has faults, if the system has no faults, an interface (2.2) of the battery system controller controls an energy storage battery relay to be switched on, controls a heating relay to be switched off, and controls a DCDC converter to be in standby;
the positive pole of the energy storage battery is connected in parallel with the positive pole of the capacitor through an energy storage battery relay, is connected to a system output positive pole binding post and outputs the energy to the outside together.
5. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 4, further comprising:
when an interface (2.9) of the battery system controller receives an external ignition signal, the system enters an activation mode, and the battery system controller operates the flow of an initial state;
when an interface (2.8) of the battery system controller receives an external starting input signal, the interface (2.2) of the battery system controller controls the energy storage battery relay to be in a disconnected state, meanwhile, the control interface (2.10) does not output a generator excitation signal, an interface (2.7) of the battery system controller outputs a starting output signal to the outside, and the signal controls a starter to work.
6. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 5, further comprising:
the battery system controller monitors whether the engine is started through the interface (2.6) and the interface (2.5), and if the engine is started successfully, the interface of the battery system controller stops outputting a starting output signal to the outside;
if the engine is not started successfully and the capacitor voltage is lower than 20Vdc, stopping outputting a starting output signal to the outside by an interface (2.7) of the battery system controller;
after an external starting input signal connected with an interface (2.8) of the battery system controller disappears, controlling a DCDC converter to start by the interface (2.1) of the battery system controller, and charging the capacitor by the energy storage battery;
the battery system controller monitors the charging process, and if the interface (2.8) is connected with an external starting input signal in the charging process, the interface (2.7) of the battery system controller does not output a starting output signal to the outside;
after charging is finished, if the interface (2.8) is connected with an external starting input signal, the interface (2.7) of the battery system controller outputs a starting output signal to the outside;
when the engine is in a running state, the battery system controller monitors the pressure difference between the capacitor and the energy storage battery, when the pressure difference is smaller than a certain value, an interface (2.2) of the battery system controller controls an energy storage battery relay to be in a switch-on state, and the battery system controller controls an interface (2.10) to output a generator excitation signal.
7. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 6, further comprising:
after the engine is started, when the temperature of the energy storage battery is lower than a charging threshold value, the battery system controller controls the relay of the energy storage battery to be in a disconnected state;
the battery system controller controls the heating relay to be in a connection state;
the generator supplies power to the battery heating film through the system output positive terminal and the heating relay, and the battery heating film heats the energy storage battery;
when the temperature of the energy storage battery is higher than a charging threshold value, the battery system controller controls the heating relay to be in a disconnected state, and battery heating is finished;
after the battery is heated, the generator charges the energy storage battery; the voltage of the generator and the capacitor is higher than that of the energy storage battery, so that the capacitor is discharged;
and (3) a capacitor discharging process: the battery system controller stops outputting the generator excitation signal, and the generator stops generating electricity;
the electric appliance of the whole vehicle provides electric energy through the capacitor, and when the voltage of the capacitor is reduced to the voltage difference with the energy storage battery, which is smaller than a threshold value, the battery system controller controls the relay of the energy storage battery to be in a switch-on state; the battery system controller outputs a generator excitation signal, and the generator generates electricity.
8. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 5, further comprising:
when the rotating speed of the engine is zero, the battery system controller judges that the vehicle is in a static state, and the bipolar column dual-power parallel system for the vehicle is in an initial state;
when the electric appliance of the whole vehicle is used for a long time and the capacitor voltage is reduced by a protection threshold value, the battery system controller controls the energy storage battery relay to be in a disconnected state, the bipolar column dual-power parallel system for the vehicle is in a dormant state, and the battery system controller is in the dormant state;
the capacitor supplies power to the electric appliances for supporting the whole vehicle until the voltage of the capacitor is reduced to the lowest working voltage of the electric appliances for the whole vehicle, and the electric appliances are stopped;
if the bipolar column dual-power parallel system for the vehicle in the power shortage state is used again, the emergency switch is pressed to start the engine, the battery system controller inputs an emergency signal, the battery system controller controls the DCDC converter to work, and the energy storage battery charges the capacitor;
after charging is completed, the battery system controller is in an emergency state;
after the emergency state lasts for a preset time, if the battery system controller does not receive an external starting input signal, the battery system controller controls the automotive bipolar column dual-power parallel system to enter the dormant state again.
9. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 5, further comprising:
if the energy storage battery, the capacitor and the DCDC converter have faults and cannot work, the battery system controller judges that the bipolar column dual-power parallel system for the vehicle is in a fault mode;
if the energy storage battery is in the fault mode, the battery system controller controls the energy storage battery relay to be in the off state and then controls the heating relay to be in the off state;
the whole vehicle cannot obtain a power supply through the positive terminal of the battery system and the negative terminal of the battery system; the vehicle is in a power-deficient state; a storage battery is required to be externally arranged for rescue treatment;
when the externally-assembled battery is connected to the positive terminal of the battery system and the negative terminal of the battery system, and the battery system controller receives an ignition signal, the vehicle double-pole double-power-supply parallel system enters a rescue starting mode;
if the system is in the rescue starting mode, the battery system controller controls the energy storage battery relay to be in the disconnection state and then controls the heating relay to be in the disconnection state;
when the battery system controller receives an external starting input signal, the battery system controller outputs a starting output signal to the outside.
10. The bipolar column dual-power parallel control method for the vehicle as claimed in claim 5, further comprising:
after the vehicle is started, the battery system controller monitors whether the bipolar column dual-power parallel system for the vehicle is still in a fault mode;
if the vehicle is still in the fault mode, the system controller outputs fault mode information, and the whole vehicle instrument displays a warning symbol to remind a driver.
CN202010412291.0A 2020-05-15 2020-05-15 Vehicle bipolar column dual-power parallel system and control method Pending CN111555425A (en)

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