CN111546938B - Vehicle hybrid storage battery management system and method - Google Patents
Vehicle hybrid storage battery management system and method Download PDFInfo
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- CN111546938B CN111546938B CN202010409319.5A CN202010409319A CN111546938B CN 111546938 B CN111546938 B CN 111546938B CN 202010409319 A CN202010409319 A CN 202010409319A CN 111546938 B CN111546938 B CN 111546938B
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- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- 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
- B60R16/023—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 transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- 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 vehicle hybrid storage battery management system and a method, comprising the following steps: the system comprises a control assembly, a storage battery pack protection contactor, a storage battery pack, a DC/DC (direct current/direct current) voltage supplementing and stabilizing module, a vehicle controller, an engine ECU (electronic control unit), a vehicle key, a vehicle instrument, an excitation generator and a parking electric appliance; the control assembly is respectively connected with a whole vehicle controller, an engine ECU, a whole vehicle key, a whole vehicle instrument, an excitation generator and a parking electric appliance, and realizes key signal receiving, whole vehicle START control, whole vehicle excitation generator START-stop control, vehicle flameout control, battery pack state information and fault early warning information display by the instrument, switching control of whole vehicle circuit power supply and stabilized voltage supply, and switching control of a starting circuit power supply. The invention avoids the problems that the service life of the lithium battery is influenced due to the over-charge and over-discharge of the storage battery pack and the over-heat use of the storage battery pack, and also avoids the serious problems that the safety performance of the whole electric vehicle is influenced due to the fire disaster.
Description
Technical Field
The invention relates to the field of electric vehicles, in particular to a vehicle hybrid storage battery management system and method.
Background
The storage battery is an essential part of the automobile, and the storage battery can adopt a lead-acid storage battery and a lithium battery. At present, the performance and technical requirements of the vehicle storage battery are continuously improved, so that the lead storage battery has the problems of large volume, heavy weight, insufficient capacity, frequent maintenance and the like, and therefore, the lithium battery is mainly used.
However, when the lithium battery is used, attention needs to be paid to the use process for various reasons, such as that the lithium ion battery cell is not allowed to be charged under the condition of low temperature and is not allowed to be overcharged and overdischarged for use. If the lithium battery appears overcharging and overdischarging, the service life of the lithium battery is influenced, the lithium battery can be damaged, and the fire can be caused seriously to influence the safety performance of the whole electric vehicle.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, the present invention provides a hybrid battery management system for a vehicle, comprising: the system comprises a control assembly, a storage battery pack protection contactor, a storage battery pack, a DC/DC (direct current/direct current) voltage supplementing and stabilizing module, a vehicle controller, an engine ECU (electronic control unit), a vehicle key, a vehicle instrument, an excitation generator and a parking electric appliance;
the storage battery pack is provided with a starting module and an energy storage module;
the positive pole of the starting module is connected with the positive pole of the starter to form a starting circuit;
the positive pole of the energy storage module is connected with the positive pole of the load of the whole vehicle except the starter to form a power supply circuit of the whole vehicle;
the DC/DC voltage compensation and stabilization module is connected between the output end of the storage battery pack protection contactor and the positive output circuit of the starting module;
the control assembly is respectively connected with a whole vehicle controller, an engine ECU, a whole vehicle key, a whole vehicle instrument, an excitation generator and a parking electric appliance, and realizes key signal receiving, whole vehicle START control, whole vehicle excitation generator START-stop control, vehicle flameout control, battery pack state information and fault early warning information display by the instrument, switching control of whole vehicle circuit power supply and stabilized voltage supply, and switching control of a starting circuit power supply.
Further, the control assembly comprises: the main control board, the DC/DC system control board and the heating relay;
the main control board collects and monitors the temperature, the voltage and the current of the storage battery pack, and carries out fault diagnosis by carrying out SOC calculation and SOH calculation on the storage battery pack so as to realize fault grading early warning and fault response control on the storage battery pack;
the main control board is communicated and controlled with the DC/DC voltage supplementing and stabilizing module through the DC/DC system control board, so that the starting module is charged and controlled by utilizing the excitation generator or the energy storage module; the main control panel realizes the charging and discharging protection control of the energy storage module by controlling the storage battery pack protection contactor, and realizes the overheating control of the energy storage module by controlling the heating relay.
Further, the control assembly further comprises: the energy storage module slave control board and the starting module slave control board;
the energy storage module is used for collecting and monitoring the voltage, the current and the temperature of each lithium battery cell in the energy storage module from the control panel, carrying out electric quantity balance control on the lithium battery cell, and communicating with the main control panel;
the starting module slave control board is used for collecting and monitoring the voltage, the current and the temperature of the starting module and the super capacitor monomer in the storage battery pack, and is communicated with the master control board.
Further, still include: the system comprises a whole vehicle control wire harness, a whole vehicle CAN communication wire harness, a system internal control wire harness and a system internal CAN communication wire harness;
the main control board is connected with the energy storage module slave control board, the starting module slave control board and the DC/DC system control board through a CAN communication harness in the system;
the main control board is respectively connected with the storage battery pack protection contactor and the heating relay through a system internal control wire harness, and is respectively connected with a vehicle controller, an engine ECU (electronic control unit), a vehicle instrument and a parking electric appliance through a vehicle CAN (controller area network) communication wire harness;
the main control board is respectively connected with a whole vehicle key and an excitation generator through a whole vehicle control wire harness.
The invention also provides a management method of the hybrid storage battery for the vehicle, which comprises the following steps:
when the whole vehicle is parked by using the parking electric appliance, the energy storage module supplies power to the parking electric appliance of the whole vehicle;
when the SOC of the energy storage module is reduced to a first parking threshold value N1, the main control board sends a shutdown command to a parking electric appliance through a whole vehicle control wire harness, and low-power protection of the energy storage module is achieved;
when the SOC of the energy storage module is reduced to a second parking threshold value N2, the main control board controls the protective contactor of the storage battery pack to be disconnected, and over-discharge protection of the energy storage module is achieved;
the first parking threshold value N1 is greater than the second parking threshold value N2.
Further, the method further comprises:
when the key of the whole vehicle is turned on, the energy storage module supplies power to a load in a circuit of the whole vehicle, and the key turning-on signal is used as a wake-up signal of the hybrid storage battery management system;
the main control board monitors the voltage of the starting module from the control board through the starting module;
when the voltage of the starting module is smaller than a first voltage threshold value U1, the main control board controls the DC/DC power supply and voltage stabilization system to be started through the DC/DC system control board, the energy storage module charges the starting module, and meanwhile, the charging state of the starting module is displayed through the whole vehicle instrument;
when the voltage of the starting module is greater than a second voltage threshold value U2, the main control board controls the DC/DC power supply and voltage stabilization system to be closed through the DC/DC system control board, and the energy storage module stops charging the starting module;
the first voltage threshold U1 is greater than the second voltage threshold U2.
Further, the method further comprises:
when a key of the whole vehicle is started, the main control panel allows the whole vehicle to be started, and then the main control panel sends a starting command to an engine ECU through a whole vehicle CAN communication wiring harness or a whole vehicle control wiring harness to control the whole vehicle to be started;
and if the whole vehicle is not allowed to be started, the main control board does not send a starting command to the engine ECU, and the state or the fault of the hybrid battery is displayed through a whole vehicle instrument.
Further, the method further comprises: after the whole vehicle is started, the main control board judges whether the energy storage module allows charging, and if the energy storage module allows charging, the main control board controls the excitation generator to be started through the whole vehicle control wire harness;
if the energy storage module does not allow charging, the main control board controls the protective contactor of the storage battery pack to be disconnected;
the main control board controls the excitation generator to generate electricity, controls the heating relay to be closed, realizes the purpose of heating the energy storage module by using the excitation generator, controls the DC/DC power supply and voltage stabilization module to be opened through the DC/DC system control board, connects the starting module into the whole vehicle circuit, and stabilizes the voltage of the whole vehicle circuit by using the starting module.
Further, the method further comprises: when the storage battery pack has a fault, the main control board carries out fault diagnosis through information acquisition and detection, and carries out fault grading early warning on a driver through a whole vehicle instrument;
if the energy storage module has a fault, the main control board controls the DC/DC power supply and voltage stabilization module to be started through the DC/DC system control board, controls the protective contactor of the storage battery pack to be disconnected, and switches to independently use the starting module to supply power to a whole vehicle circuit and a starting circuit;
if only the starting module fails, the main control board controls the storage battery pack protection contactor to be opened through the DC/DC system control board, and the storage module is switched to be used independently to supply power to the whole vehicle circuit and the starting circuit.
Further, the method further comprises: when the energy storage module is out of control due to heat, the main control board communicates with the whole vehicle controller and the engine ECU through a whole vehicle CAN line or a whole vehicle control wire harness to control the vehicle to flameout, and the mixed storage battery fault alarm is given to a driver through a whole vehicle instrument.
According to the technical scheme, the invention has the following advantages:
the vehicle hybrid storage battery management system realizes the state monitoring of the hybrid storage battery system, the overcharge and overdischarge protection and the thermal management control of the energy storage module, the starting capability control of the starting module and the voltage stabilization control of the whole vehicle circuit by using the control panel and the contactor. The control panel is communicated with a vehicle controller, an engine ECU, a key switch, a vehicle instrument and a vehicle generator, and the hybrid storage battery protection control, the vehicle starting and power supply strategy adjustment, the vehicle parking electric appliance control, the vehicle starting control, the generator starting and stopping control, the storage battery system fault grading alarm control and other technical functions are realized according to the temperature condition and the hybrid storage battery module state. The problem that the service life of a lithium battery is influenced due to the fact that the storage battery pack is overcharged, overdischarged and overheated to use is avoided, and the serious problem that the safety performance of the whole electric vehicle is influenced due to fire is avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the description will be briefly introduced below, and it is apparent 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 hybrid battery management system for a vehicle;
FIG. 2 is a flow chart of a control strategy for turning on the parking appliance;
FIG. 3 is a flow chart of control strategies for a full vehicle KEY ON and a full vehicle START;
fig. 4 is a flow chart of a control strategy for hybrid battery system failure.
Description of reference numerals:
in fig. 1: 1. the system comprises a main control board, 2, an energy storage module slave control board, 3, a starting module slave control board, 4.DC/DC system control board, 5, a storage battery pack protection contactor, 6, a heating relay, 7, a vehicle controller, 8, an engine ECU, 9, a vehicle key, 10, a vehicle instrument, 11, an excitation generator, 12, a parking electric appliance, 13, a vehicle control wiring harness, 14, a vehicle CAN communication wiring harness, 15, a system internal control wiring harness and 16, a system internal CAN communication wiring harness.
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.
The present invention relates to a hybrid battery management system for a vehicle, as shown in fig. 1, including: the system comprises a control assembly 20, a storage battery pack protection contactor 5, a storage battery pack, a DC/DC (direct current/direct current) power supply and voltage stabilization module, a vehicle controller 7, an engine ECU8, a vehicle key 9, a vehicle instrument 10, an excitation generator 11 and a parking electric appliance 12; the storage battery pack is provided with a starting module and an energy storage module; the starting module is provided with a super capacitor and/or a storage battery. The energy storage module is provided with a lithium battery or a corresponding battery.
The positive pole of the starting module is connected with the positive pole of the starter to form a starting circuit; the positive electrode of the energy storage module is connected with the positive electrode of the load of the whole vehicle except the starter to form a power supply circuit of the whole vehicle; the DC/DC voltage compensation and stabilization module is connected between the output end of the storage battery pack protection contactor 5 and the positive output circuit of the starting module; the control assembly 20 is respectively connected with the whole vehicle controller 7, the engine ECU8, the whole vehicle key 9, the whole vehicle instrument 10, the excitation generator 11 and the parking electric appliance 12, and the control assembly 20 realizes key signal receiving, whole vehicle START control, whole vehicle excitation generator START-stop control, vehicle flameout control, battery pack state information and fault early warning information display by utilizing the instrument, switching control of whole vehicle circuit power supply and stabilized voltage supply and switching control of a starting circuit power supply.
The control component 20 may be implemented as a processor or an integrated circuit device, such as an integrated circuit chip or chipset, among others. Alternatively or additionally, if implemented in software or firmware, the techniques may implement a data storage medium readable at least in part by a computer, comprising instructions that when executed cause a processor to perform one or more of the above-described methods. For example, a computer-readable data storage medium may store instructions such as are executed by a processor.
Specifically, the control unit 20 includes: a main control board 1, a DC/DC system control board 4 and a heating relay 6; the main control board 1 collects and monitors the temperature, the voltage and the current of the storage battery pack, and carries out fault diagnosis by carrying out SOC calculation and SOH calculation on the storage battery pack so as to realize fault grading early warning and fault response control on the storage battery pack; the main control board 1 communicates and controls with the DC/DC voltage-supplementing and stabilizing module through the DC/DC system control board 4, and realizes charging control on the starting module by using the excitation generator 11 or the energy storage module; the main control panel 1 controls the storage battery pack protection contactor 5 to realize charging and discharging protection control on the energy storage module, and controls the heating relay 6 to realize overheating control on the energy storage module.
The main control board 1 includes one or more processors for execution, such as 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 implementation of the techniques described herein. In addition, in some aspects, the functionality described in this disclosure may be provided in software modules and hardware modules.
It should be further noted that the control assembly 20 further includes: the energy storage module slave control board 2 and the starting module slave control board 3; the energy storage module slave control board 2 is used for collecting and monitoring the voltage, current and temperature of each lithium battery cell in the energy storage module, carrying out electric quantity balance control on the lithium battery cell, and communicating with the master control board; the starting module slave control board 3 is used for collecting and monitoring the voltage, the current and the temperature of the starting module and the super capacitor monomer in the storage battery pack, and is communicated with the master control board.
To implement the communication connection, the system further comprises: a whole vehicle control wiring harness 13, a whole vehicle CAN communication wiring harness 14, a system internal control wiring harness 15 and a system internal CAN communication wiring harness 16; the main control board 1 is connected with the energy storage module slave control board 2, the starting module slave control board 3 and the DC/DC system control board 4 through a CAN communication wire harness 16 in the system; the main control board 1 is respectively connected with the storage battery pack protection contactor 5 and the heating relay 6 through a system internal control wire harness 15, and the main control board 1 is respectively connected with the whole vehicle controller 7, the engine ECU8, the whole vehicle instrument 10 and the parking electric appliance 12 through a whole vehicle CAN communication wire harness 14; the main control panel 1 is respectively connected with a whole vehicle key 9 and an excitation generator 11 through a whole vehicle control wire harness 13.
As an embodiment of the present invention, the slave control board 2 of the energy storage module is used for collecting and monitoring the voltage, current and temperature of the energy storage module and the single lithium ion battery cell, performing power balance control on the single lithium ion battery cell, and communicating with the master control board. The starting module slave control board 3 is used for collecting and monitoring the voltage, the current and the temperature of the starting module and the super capacitor monomer and communicating with the master control board. The DC/DC system control board 4 is used for monitoring and controlling the DC/DC voltage-compensating and stabilizing system and communicating with the main control board. The main control board 1, the energy storage module slave control board 2, the starting module slave control board 3 and the DC/DC system control board 4 can also be integrated into a control board.
The storage battery pack protection contactor executes the command of the main control panel and switches on or off the positive output circuit of the energy storage module. The heating relay 6 executes the command of the main control panel and switches on or off the energy storage module heating circuit.
Based on the system, the invention also provides a management method of the hybrid storage battery for the vehicle, which comprises the following steps of:
when the whole vehicle uses the parking electric appliance to park, the energy storage module supplies power to the parking electric appliance of the whole vehicle;
when the SOC of the energy storage module is reduced to a first parking threshold value N1, the main control board sends a shutdown command to a parking electric appliance through a whole vehicle control wire harness, and low-power protection of the energy storage module is achieved;
when the SOC of the energy storage module is reduced to a second parking threshold value N2, the main control board controls the protective contactor of the storage battery pack to be disconnected, and over-discharge protection of the energy storage module is realized;
the first parking threshold value N1 is greater than the second parking threshold value N2.
When a key of the whole vehicle is started, the energy storage module supplies power to a load in a circuit of the whole vehicle, and a key starting signal is used as a wake-up signal of the hybrid storage battery management system;
the main control board monitors the voltage of the starting module from the control board through the starting module;
when the voltage of the starting module is smaller than a first voltage threshold value U1, the main control board controls the DC/DC voltage compensation and stabilization system to be started through the DC/DC system control board, the energy storage module charges the starting module, and the charging state of the starting module is displayed through a whole vehicle instrument;
when the voltage of the starting module is greater than a second voltage threshold value U2, the main control board controls the DC/DC power supply and voltage stabilization system to be closed through the DC/DC system control board, and the energy storage module stops charging the starting module;
the first voltage threshold U1 is greater than the second voltage threshold U2.
When the whole vehicle key is started, the main control board allows the whole vehicle to be started, and the main control board sends a starting command to the engine ECU through a whole vehicle CAN communication wiring harness or a whole vehicle control wiring harness to control the whole vehicle to be started;
and if the whole vehicle is not allowed to be started, the main control board does not send a starting command to the engine ECU, and the state or the fault of the hybrid battery is displayed through a whole vehicle instrument.
After the whole vehicle is started, the main control board judges whether the energy storage module allows charging, and if the energy storage module allows charging, the main control board controls the excitation generator to be started through the whole vehicle control wire harness;
if the energy storage module does not allow charging, the main control board controls the protective contactor of the storage battery pack to be disconnected;
the main control board controls the excitation generator to generate electricity, controls the heating relay to be closed, realizes the heating of the energy storage module by the excitation generator, controls the DC/DC voltage supplementing and stabilizing module to be opened through the DC/DC system control board, connects the starting module into the whole vehicle circuit, and stabilizes the voltage of the whole vehicle circuit by the starting module.
When the storage battery pack has a fault, the main control panel carries out fault diagnosis through information acquisition and detection, and carries out fault grading early warning on a driver through a whole vehicle instrument;
if the energy storage module has a fault, the main control board controls the DC/DC power supply and voltage stabilization module to be started through the DC/DC system control board, controls the protective contactor of the storage battery pack to be disconnected, and switches to independently use the starting module to supply power to a whole vehicle circuit and a starting circuit;
if only the starting module fails, the main control board controls the storage battery pack protection contactor to be opened through the DC/DC system control board, and the storage module is switched to be used independently to supply power to the whole vehicle circuit and the starting circuit.
When the energy storage module is out of control due to heat, the main control board is communicated with the whole vehicle controller and the engine ECU through a whole vehicle CAN line or a whole vehicle control wire harness to control the vehicle to flameout, and a mixed storage battery fault alarm is given to a driver through a whole vehicle instrument.
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 (8)
1. A hybrid battery management system for a vehicle, comprising: the system comprises a control assembly (20), a storage battery pack protection contactor (5), a storage battery pack, a DC/DC voltage compensation and stabilization module, a vehicle controller (7), an engine ECU (8), a vehicle key (9), a vehicle instrument (10), an excitation generator (11) and a parking electric appliance (12);
the storage battery pack is provided with a starting module and an energy storage module;
the positive pole of the starting module is connected with the positive pole of the starter to form a starting circuit;
the positive pole of the energy storage module is connected with the positive pole of the load of the whole vehicle except the starter to form a power supply circuit of the whole vehicle;
the DC/DC voltage compensation and stabilization module is connected between the output end of the storage battery pack protection contactor (5) and the positive output circuit of the starting module;
the control assembly (20) is respectively connected with a vehicle control unit (7), an engine ECU (8), a vehicle key (9), a vehicle instrument (10), an excitation generator (11) and a parking electric appliance (12), and the control assembly (20) realizes key signal receiving, vehicle START control, vehicle excitation generator START-stop control, vehicle flameout control, battery pack state information and fault early warning information display by using the instrument, switching control of vehicle circuit power supply and stabilized voltage supply and switching control of starting circuit power supply;
the control assembly (20) comprises: the system comprises a main control board (1), a DC/DC system control board (4) and a heating relay (6);
the main control board (1) collects and monitors the temperature, the voltage and the current of the storage battery pack, and carries out fault diagnosis by carrying out SOC calculation and SOH calculation on the storage battery pack so as to realize fault grading early warning and fault response control on the storage battery pack;
the main control board (1) is communicated and controlled with the DC/DC voltage-supplementing and stabilizing module through the DC/DC system control board (4), so that the starting module is charged and controlled by using the excitation generator (11) or the energy storage module; the main control board (1) controls the storage battery pack protection contactor (5) to realize charging and discharging protection control on the energy storage module, and controls the heating relay (6) to realize overheating control on the energy storage module.
2. The vehicular hybrid battery management system according to claim 1,
the control assembly (20) further comprises: the energy storage module slave control board (2) and the starting module slave control board (3);
the energy storage module slave control board (2) is used for collecting and monitoring the voltage, the current and the temperature of each lithium battery cell in the energy storage module, carrying out electric quantity balance control on the lithium battery cell, and communicating with the master control board;
the starting module slave control board (3) is used for collecting and monitoring the voltage, the current and the temperature of the starting module and the super capacitor monomer in the storage battery pack, and is communicated with the master control board.
3. The vehicular hybrid battery management system according to claim 2,
further comprising: a whole vehicle control wire harness (13), a whole vehicle CAN communication wire harness (14), a system internal control wire harness (15) and a system internal CAN communication wire harness (16);
the main control board (1) is connected with the energy storage module slave control board (2), the starting module slave control board (3) and the DC/DC system control board (4) through a CAN communication harness (16) in the system;
the main control board (1) is respectively connected with the storage battery pack protection contactor (5) and the heating relay (6) through a system internal control wire harness (15), and the main control board (1) is respectively connected with the whole vehicle controller (7), the engine ECU (8), the whole vehicle instrument (10) and the parking electric appliance (12) through a whole vehicle CAN communication wire harness (14);
the main control board (1) is respectively connected with a whole vehicle key (9) and an excitation generator (11) through a whole vehicle control wire harness (13).
4. A hybrid battery management method for a vehicle, characterized in that the method employs the hybrid battery management system for a vehicle according to any one of claims 1 to 3;
the method comprises the following steps:
when the whole vehicle uses the parking electric appliance to park, the energy storage module supplies power to the parking electric appliance of the whole vehicle;
when the SOC of the energy storage module is reduced to a first parking threshold value N1, the main control board sends a shutdown command to a parking electric appliance through a whole vehicle control wire harness, and low-power protection of the energy storage module is achieved;
when the SOC of the energy storage module is reduced to a second parking threshold value N2, the main control board controls the protective contactor of the storage battery pack to be disconnected, and over-discharge protection of the energy storage module is achieved;
the first parking threshold value N1 is greater than the second parking threshold value N2;
the method further comprises the following steps:
when the key of the whole vehicle is turned on, the energy storage module supplies power to a load in a circuit of the whole vehicle, and the key turning-on signal is used as a wake-up signal of the hybrid storage battery management system;
the main control board monitors the voltage of the starting module from the control board through the starting module;
when the voltage of the starting module is smaller than a first voltage threshold value U1, the main control board controls the DC/DC voltage compensation and stabilization system to be started through the DC/DC system control board, the energy storage module charges the starting module, and the charging state of the starting module is displayed through a whole vehicle instrument;
when the voltage of the starting module is greater than a second voltage threshold value U2, the main control board controls the DC/DC power supply and voltage stabilization system to be closed through the DC/DC system control board, and the energy storage module stops charging the starting module;
the first voltage threshold U1 is greater than the second voltage threshold U2.
5. The vehicle hybrid battery management method according to claim 4, characterized in that the method further comprises:
when a key of the whole vehicle is started, the main control panel allows the whole vehicle to be started, and then the main control panel sends a starting command to an engine ECU through a whole vehicle CAN communication wiring harness or a whole vehicle control wiring harness to control the whole vehicle to be started;
and if the whole vehicle is not allowed to be started, the main control board does not send a starting command to the engine ECU, and the state or the fault of the hybrid battery is displayed through a whole vehicle instrument.
6. The vehicle hybrid battery management method according to claim 4, characterized in that the method further comprises:
after the whole vehicle is started, the main control board judges whether the energy storage module allows charging, and if the energy storage module allows charging, the main control board controls the excitation generator to be started through the whole vehicle control wire harness;
if the energy storage module does not allow charging, the main control board controls the protective contactor of the storage battery pack to be disconnected;
the main control board controls the excitation generator to generate electricity, controls the heating relay to be closed, realizes the heating of the energy storage module by the excitation generator, controls the DC/DC voltage supplementing and stabilizing module to be opened through the DC/DC system control board, connects the starting module into the whole vehicle circuit, and stabilizes the voltage of the whole vehicle circuit by the starting module.
7. The vehicle hybrid battery management method according to claim 4, characterized in that the method further comprises:
when the storage battery pack has a fault, the main control panel carries out fault diagnosis through information acquisition and detection, and carries out fault grading early warning on a driver through a whole vehicle instrument;
if the energy storage module has a fault, the main control board controls the DC/DC voltage compensation and stabilization module to be started through the DC/DC system control board, controls the protective contactor of the storage battery pack to be disconnected, and switches to independently use the starting module to supply power to the whole vehicle circuit and the starting circuit;
if only the starting module fails, the main control board controls the storage battery pack protection contactor to be opened through the DC/DC system control board, and the storage module is switched to be used independently to supply power to the whole vehicle circuit and the starting circuit.
8. The vehicle hybrid battery management method according to claim 4, characterized in that the method further comprises:
when the energy storage module is out of control due to heat, the main control board communicates with the whole vehicle controller and the engine ECU through a whole vehicle CAN line or a whole vehicle control wire harness to control the vehicle to flameout, and the mixed storage battery fault alarm is given to a driver through a whole vehicle instrument.
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| CN112531836A (en) * | 2020-11-30 | 2021-03-19 | 徐州徐工挖掘机械有限公司 | Storage battery charging and discharging protection system suitable for excavator and control method |
| CN113071370B (en) * | 2021-03-24 | 2022-12-30 | 浙江合众新能源汽车有限公司 | Management method of low-voltage lithium battery of electric automobile and complete automobile power supply switching method |
| CN113581007B (en) * | 2021-08-04 | 2023-05-26 | 秦皇岛奥卡深软件开发有限公司 | Driving charging system of lithium battery pack standby power supply and control method |
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