CN116176351A - High-low voltage battery integrated control power supply system, method and operation machine - Google Patents

High-low voltage battery integrated control power supply system, method and operation machine Download PDF

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Publication number
CN116176351A
CN116176351A CN202310189002.9A CN202310189002A CN116176351A CN 116176351 A CN116176351 A CN 116176351A CN 202310189002 A CN202310189002 A CN 202310189002A CN 116176351 A CN116176351 A CN 116176351A
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CN
China
Prior art keywords
switch
low
voltage
voltage battery
battery pack
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Pending
Application number
CN202310189002.9A
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Chinese (zh)
Inventor
王锐
魏长河
曾祥
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Sany Electric Vehicle Technology Co Ltd
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Sany Electric Vehicle Technology Co Ltd
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Priority to CN202310189002.9A priority Critical patent/CN116176351A/en
Publication of CN116176351A publication Critical patent/CN116176351A/en
Pending legal-status Critical Current

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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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • 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
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the 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
    • H01M10/44—Methods for charging or discharging
    • 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
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • 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
    • 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 high-low voltage battery integrated control power supply system, a method and an operation machine, wherein the system comprises a main switch, an electric control module, a high-voltage battery pack and a battery management module; the high-voltage battery pack, the low-voltage battery pack and the battery management module are integrated and arranged in the same box body, when the main electric switch is closed, the electric control module sends a control command to the battery management module according to the closing state of the main electric switch, the battery management module controls the high-voltage battery pack and the low-voltage battery pack to supply power to the whole vehicle at high voltage and low voltage according to the control command, and the high-voltage battery pack, the low-voltage battery pack and the battery management module are integrated in the same box body, so that the overall control of the high-voltage battery module and the low-voltage battery module is uniformly realized through the battery management module, the control flow is simplified, and the integrated control of the high-voltage battery pack and the low-voltage battery pack is efficiently completed.

Description

High-low voltage battery integrated control power supply system, method and operation machine
Technical Field
The invention relates to the technical field of power supply control, in particular to a high-low voltage battery integrated control power supply system, a method and a working machine.
Background
Electric automobiles, electric operation machines and the like gradually occupy larger specific gravity in the market, and main electric power parts of the electric automobiles, the electric operation machines and the like comprise a high-voltage battery pack and a low-voltage battery pack, the high-voltage battery pack is powered by a power lithium battery through a 600V voltage platform, and the low-voltage battery pack is powered by a lead-acid storage battery or a 24V lithium battery through a 24V voltage platform.
Therefore, how to more simply implement integrated control on the high-voltage battery pack and the low-voltage battery pack becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a high-low voltage battery integrated control power supply system, a method and an operation machine, which are used for solving the defect of complicated control of a high-voltage battery pack and a low-voltage battery pack in the prior art.
The invention provides a high-low voltage battery integrated control power supply system, which comprises: the system comprises a main switch, an electric control module, a high-voltage battery pack, a low-voltage battery pack and a battery management module;
the high-voltage battery pack, the low-voltage battery pack and the battery management module are integrally arranged in the same box body, the high-voltage battery pack and the low-voltage battery pack are connected with the battery management module, the total electric switch is connected with the electric control module, and the electric control module is also connected with the battery management module;
when the main electric door is closed, the electric control module sends a control instruction to the battery management module according to the closing state of the main electric door, and the battery management module controls the high-voltage battery pack and the low-voltage battery pack to carry out high-voltage power supply and low-voltage power supply on the whole vehicle according to the control instruction.
The invention provides a high-low voltage battery integrated control power supply system, which also comprises a switch control module;
one end of the switch control module is connected with the battery management module, and the other end of the switch control module is connected with the main switch and the low-voltage power utilization module;
the switch control module is used for controlling the on-off of the low-voltage power utilization module, the total switch and the low-voltage battery pack.
According to the high-low voltage battery integrated control power supply system provided by the invention, the switch control module comprises a first sub-switch and a second sub-switch;
one end of the first sub-switch is connected with the battery management module, the other end of the first sub-switch is connected with the low-voltage power utilization module, one end of the second sub-switch is connected with the battery management module, and the other end of the second sub-switch is connected with the main switch;
the first sub-switch is used for controlling the on-off of the low-voltage power utilization module and the low-voltage battery pack, and the second sub-switch is used for controlling the on-off of the main switch and the low-voltage battery pack.
According to the high-low voltage battery integrated control power supply system provided by the invention, the switch control module further comprises a first diode and a second diode;
the first diode is connected in series between the second sub-switch and the battery management module, and the second diode is connected in series between the first sub-switch and the battery management module;
the first diode is used for controlling the battery management module to unidirectionally control the second sub-switch to be turned on or turned off, and the second diode is used for controlling the battery management module to unidirectionally control the first sub-switch to be turned on or turned off.
The invention provides a high-low voltage battery integrated control power supply system, which also comprises a third diode and a fourth diode;
the third diode is connected in series between the first sub-switch and the electronic control module, and the fourth diode is connected in series between the second sub-switch and the electronic control module;
the third diode is used for controlling the electronic control module to unidirectionally control the on/off of the first sub-switch, and the fourth diode is used for controlling the electronic control module to unidirectionally control the on/off of the second sub-switch.
According to the high-low voltage battery integrated control power supply system provided by the invention, the total electric gate comprises an ignition device, a first electric gate switch, a second electric gate switch and a third electric gate switch;
the first electric door switch is connected with the ACC of the ignition device, the second electric door switch is electrically connected with the first ON of the ignition device, the third electric door switch is electrically connected with the second ON of the ignition device, and the ignition device is further connected with the electronic control module.
The invention provides a high-low voltage battery integrated control power supply system, which also comprises a voltage conversion module;
the input end of the voltage conversion module is connected with the high-voltage battery pack, the output end of the voltage conversion module is connected with the low-voltage battery pack, and the voltage conversion module is also connected with the electric control module.
The invention provides a high-low voltage battery integrated control power supply system, which also comprises an interlocking switch and a self-resetting power switch;
one end of the interlocking switch is connected with the battery management module, the other end of the interlocking switch is connected with the low-voltage battery pack, and the self-resetting power switch is connected in series between the low-voltage battery pack and the battery management module;
the self-resetting power switch and the interlocking switch are used for conducting self-checking on the low-voltage battery pack.
The invention also provides a high-low voltage battery integrated control power supply method which is applied to the high-low voltage battery integrated control power supply system, and the method comprises the following steps:
when the battery management module and the low-voltage battery pack have no faults, the electric control module controls the low-voltage battery pack to supply power at low voltage through the battery management module according to the closing state of the total switch;
when the battery management module and/or the low-voltage battery pack has faults, the electric control module converts the voltage of the high-voltage battery pack into target voltage through the voltage conversion module, and the whole vehicle power supply is carried out through the target voltage according to the closing state of the total switch.
The present invention also provides a working machine comprising a high-low voltage battery integrated control power supply system as described in any one of the above, or for executing a high-low voltage battery integrated control power supply method as described in the above.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the high-low voltage battery integrated control power supply method according to any one of the above when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a high and low voltage battery integrated control power supply method as described in any one of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor implements a high and low voltage battery integrated control power supply method as described in any one of the above.
The invention provides a high-low voltage battery integrated control power supply system, a method and an operation machine, wherein the system comprises a main switch, an electric control module, a high-voltage battery pack and a battery management module; the high-voltage battery pack, the low-voltage battery pack and the battery management module are integrally arranged in the same box body, the high-voltage battery pack and the low-voltage battery pack are connected with the battery management module, the main switch is connected with the electric control module, and the electric control module is also connected with the battery management module; when the main electric door is closed, the electric control module sends a control command to the battery management module according to the closing state of the main electric door, the battery management module controls the high-voltage battery pack and the low-voltage battery pack to supply power to the whole vehicle at high voltage and low voltage according to the control command, the high-voltage battery pack, the low-voltage battery pack and the battery management module are all integrated in the same box, the battery management module is used for uniformly controlling the high-voltage battery module and the low-voltage battery module, the control flow is simplified, and the integrated control of the high-voltage battery pack and the low-voltage battery pack is efficiently completed.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a high-low voltage battery integrated control power supply system according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a high-low voltage battery integrated control power supply system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a high-low voltage battery integrated control power supply method according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of an electronic device provided by the present invention.
Reference numerals:
1. an electric control module; 2. a battery management module; 3. a main electric gate; 31. an ignition device; 32. a first electric gate switch; 33. a second current collector; 34. a third switch; 4. a low-voltage battery pack; 5. a high voltage battery pack; 6. a voltage conversion module; 71. a first sub-switch; 72. a second sub-switch; 8. an interlock relay; 9. a self-resetting power switch; A. a case; d01, a first diode; d02, a second diode; d03, a third diode; d04, fourth diode.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a high-low voltage battery integrated control power supply system, method and working machine according to the present invention with reference to fig. 1 to 4.
Fig. 1 is a schematic structural diagram of an integrated control power supply system for a high-voltage battery according to an embodiment of the present invention, and fig. 2 is a schematic circuit diagram of an integrated control power supply system for a high-voltage battery according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, a high-low voltage battery integrated control power supply system provided by an embodiment of the present invention includes: the system comprises a main switch 3, an electric control module 1, a high-voltage battery pack 5, a low-voltage battery pack 4 and a battery management module 2; the high-voltage battery pack 5, the high-voltage battery pack 4 and the battery management module 2 are integrally arranged in the same box body A, the high-voltage battery pack 5 and the high-voltage battery pack 4 are connected with the battery management module 2, the main switch 3 is connected with the electric control module 1, and the electric control module 1 is also connected with the battery management module 2; when the main electric door 3 is closed, the electric control module 1 sends a control instruction to the battery management module 2 according to the closing state of the main electric door, and the battery management module 2 controls the high-voltage battery pack 5 and the low-voltage battery pack 4 to carry out high-voltage power supply and low-voltage power supply on the whole vehicle according to the control instruction.
In a specific implementation, the high-voltage battery pack 5 is used to drive the work machine to work, and the low-voltage battery pack 4 is used to provide power support for the work machine and low-voltage power supply for low-voltage electrical equipment inside the work machine. The electronic control module 1, namely vehicle Control Unit, is a whole vehicle controller of the electric operation machinery, and mainly plays a role in coordinating the work of all parts of the automobile such as a battery, a gearbox, a motor, an engine and the like of the operation machinery, and is a general controller of a vehicle power system. The total electric door 3 refers to a total electric door related portion of the work machine, that is, a gear in which the key is located, a key ACC gear, a key ON gear, and the like. The battery management module 2 mainly aims at realizing the integral control of the high-voltage battery pack 5 and the low-voltage battery pack 4, and can select to integrate the battery management module 2 on the control structure of the high-voltage battery pack 5, thereby omitting the control module of the low-voltage battery pack 4 which is arranged independently, and carrying out the integral control of the high-voltage battery pack 5 and the low-voltage battery pack 4 through the integrated battery management module 2, thereby effectively simplifying the control logic, reducing the manufacturing cost of batteries and being more beneficial to the manufacturing and production of electric operation machinery.
The whole working flow is that an operator sets a switch to be in a corresponding closed state through the main switch 3, and each different closed state corresponds to a different power supply strategy, including starting power supply, constant power supply, power supply and the like. Therefore, the electronic control module 1 detects the state of the main switch 3, and after determining the state of the main switch 3, the battery management module 2 sends a corresponding control command to the battery management module 2, and the battery management module 2 controls the corresponding low-voltage battery set 4 and high-voltage battery set 5 to operate according to the corresponding control command. For example, if the command of the main switch 3 is to start power supply and low voltage supply, the battery management module 2 starts the high voltage battery set 5 and the low voltage battery set 4 to perform power supply and low voltage supply. If the control instruction of the main switch 3 is to start low-voltage power consumption, the battery management module 2 only starts the low-voltage battery pack 4 to supply low-voltage power for the low-voltage power consumption equipment in the operation machinery to normally use.
Through concentrating the low-voltage battery pack 4, the high-voltage battery pack 5 and the battery management module 2 in the same box body A, for example in the same non-standard box, the harness connection between the high-voltage battery pack 5 and the low-voltage battery pack 4 is simplified, and the battery cost is effectively saved.
Further, as shown in fig. 2, on the basis of the above embodiment, the high-low voltage battery integrated control power supply system in this embodiment further includes a switch control module; one end of the switch control module is connected with the battery management module 2, and the other end of the switch control module is connected with the main switch 3 and the low-voltage power utilization module; the switch control module is used for controlling the on-off of the low-voltage power utilization module, the main switch 3 and the low-voltage battery pack 4.
Wherein the switch control module comprises a first sub-switch 71 and a second sub-switch 72; one end of the first sub-switch 71 is connected with the battery management module 2, the other end of the first sub-switch 71 is connected with the low-voltage power utilization module, one end of the second sub-switch 72 is connected with the battery management module 2, and the other end of the second sub-switch 72 is connected with the main switch 3; the first sub-switch 71 is used for controlling the on-off of the low-voltage power consumption module and the low-voltage battery pack 4, and the second sub-switch 72 is used for controlling the on-off of the main switch 3 and the low-voltage battery pack 4.
Specifically, the switch control module controls the power switch, the low-voltage power comprises normal power and other low-voltage power consumption equipment, such as air conditioner, sound equipment and other low-voltage power consumption equipment in the vehicle, and the normal power mainly comprises power corresponding to the main electric door 3. The electronic control module 1 controls on or off of the first sub-switch 71 and the second sub-switch 72. When the normal power supply is needed, the electronic control module 1 controls the second sub-switch 72 to be closed, so that the low-voltage battery pack 4 performs normal power output supply, and the main switch 3 enters the working mode. When the low-voltage electric equipment is required to supply power, the electronic control module 1 controls the first sub-switch 71 to be closed, so that the 24V low-voltage battery of the low-voltage battery set 4 can be used for supplying power, and the low-voltage power supply of the operation machinery is ensured. The first sub-switch 71 and the second sub-switch 72 can realize the separate power supply control of normal power and low voltage power, and the normal power and the low voltage power do not affect each other, so that the power supply is effectively ensured, and the normal power supply and the low voltage power supply can be independently controlled, and the power safety, the fault overhaul maintenance and the like are ensured.
Further, on the basis of the above embodiment, as shown in fig. 2, the switch control module in this embodiment further includes a first diode D01 and a second diode D02; the first diode D01 is connected in series between the second sub-switch 72 and the battery management module 2, and the second diode D02 is connected in series between the first sub-switch 71 and the battery management module 2; the first diode D01 is used for controlling the battery management module 2 to unidirectionally control the on or off of the second sub-switch 72, and the second diode D02 is used for controlling the battery management module 2 to unidirectionally control the on or off of the first sub-switch 71.
Specifically, the first diode D01 is disposed between the second sub-switch 72 and the battery management module 2, so that the battery management module 2 is unidirectionally controlled by the battery management module 2, a situation that the battery management module 2 is randomly controlled by the electronic control module 1 cannot occur, and damage to the battery management module 2 caused by current backflow of the second sub-switch 72 cannot occur. Similarly, the second diode D02 can form unidirectional control between the first sub-switch 71 and the battery management module 2. As shown in fig. 2, the first diode D01 and the second diode D02 are similarly provided inside the case a, so that the harness cost can be reduced. Through the unidirectional conduction control of the first diode D01 and the second diode D02, confusion of control logic can be effectively avoided, current backflow between the electric control module 1 and the battery management module 2 can not occur, and electricity safety can be effectively ensured.
Further, as shown in fig. 2, on the basis of the above embodiment, the high-low voltage battery integrated control power supply system in this embodiment further includes a voltage conversion module 6; the input end of the voltage conversion module 6 is connected with the high-voltage battery pack 5, the output end of the voltage conversion module 6 is connected with the low-voltage battery pack 4, and the voltage conversion module 6 is also connected with the electronic control module 1; when the low-voltage battery pack 4 fails and/or the battery management module 2 fails, the electric control module 1 converts the voltage of the high-voltage battery pack 5 into a target voltage through the voltage conversion module 6, and the whole vehicle is powered through the target voltage.
Specifically, the voltage conversion module 6 is a DCDC module, and the voltage conversion module 6 has the main function of converting the high voltage of the high-voltage battery set 5 into a target voltage, for example converting the high voltage into 24V voltage, so that the low-voltage battery set 4 can be charged through the high-voltage battery set 5, normal low-voltage power supply is ensured, and the low-voltage battery set 4 can be timely charged when the low-voltage battery set 4 is insufficient in power. The voltage of the high-voltage battery pack 5 can be directly converted into the target voltage, and then the low-voltage supply can be directly performed, so that the normal use of the low-voltage electric equipment can be ensured.
Further, as shown in fig. 2, on the basis of the above embodiment, the high-low voltage battery integrated control power supply system in this embodiment further includes a third diode D03 and a fourth diode D04; the third diode D03 is connected in series between the first sub-switch 71 and the electronic control module 1, and the fourth diode D04 is connected in series between the second sub-switch 72 and the electronic control module 1; the third diode D03 is used for controlling the electronic control module 1 to unidirectionally control the on or off of the first sub-switch 71, and the fourth diode D04 is used for controlling the electronic control module 1 to unidirectionally control the on or off of the second sub-switch 72.
Specifically, the third diode D03 is disposed between the electronic control module 1 and the first sub-switch 71, so that unidirectional control is performed between the electronic control module 1 and the first sub-switch 71, and the electronic control module 1 is not interfered by signals of the first sub-switch 71. Similarly, since the fourth diode D04 is disposed between the electronic control module 1 and the second sub-switch 72, the current signal of the second sub-switch 72 does not affect the control of the electronic control module 1. As shown in fig. 2, diodes are respectively arranged on the control lines of the battery management module 2 and the electronic control module 1, so that the control currents between the battery management module 2 and the electronic control module 1 do not interfere with each other, and the safety control of the second sub-switch 72 and the first sub-switch 71 is effectively ensured.
Further, as shown in fig. 2, on the basis of the above-described embodiment, the total electric gate 3 in the present embodiment includes an ignition device 31, a first electric gate switch 32, a second electric gate switch 33, and a third electric gate switch 34; the first electric gate switch 32 is connected with the ACC of the ignition device 31, the second electric gate switch 33 is electrically connected with the first ON of the ignition device 31, the third electric gate switch 34 is electrically connected with the second ON of the ignition device 31, and the ignition device 31 is also connected with the electronic control module 1; when the ignition device 31 is in an ACC state, the first electric door switch 32 is turned on, and the electronic control module 1 controls the battery pack 4 to perform ACC power supply; when the ignition device 31 is in the first ON state, the second electric gate switch 33 is turned ON, and the electronic control module 1 controls the low-voltage battery 4 to perform first ON electric power supply; when the ignition device 31 is in the second ON state, the third switch 34 is turned ON, and the electronic control module 1 controls the low-voltage battery 4 to perform the second ON power supply.
Specifically, the main electric door 3 is connected with the constant-voltage power distribution through a fuse of 10A, an operator selects to switch the ignition device 31 from LOCK gear to ACC gear according to actual operation requirements, and the ignition device 31 controls the first electric door switch 32 to be closed through a hard wire, so that the low-voltage electric equipment connected with the ACC can be normally used, for example, the low-voltage electric equipment such as information entertainment in the operation machinery. If the ignition device 31 is switched to the ON position, the ignition device 31 will be turned ON by hard wire to control the second electric switch 33 and the third electric switch 34, the second electric switch 33 provides power supply for the driving safety related control unit, and the third electric switch 34 provides ON power supply for other control units except driving safety of the whole vehicle, thereby ensuring the normal operation of all electric equipment of the working machine.
Further, on the basis of the above embodiment, as shown in fig. 2, the high-low voltage battery integrated control power supply system in this embodiment further includes an interlock switch and a self-resetting power switch 9; one end of the interlocking switch is connected with the battery management module 2, the other end of the interlocking switch is connected with the low-voltage battery pack 4, and the self-resetting power switch 9 is connected in series between the low-voltage battery pack 4 and the battery management module 2; the self-resetting power switch 9 and the interlocking switch are used for self-checking the battery pack 4.
Specifically, when the working machine needs useful electricity, the self-resetting power switch 9 can be pressed for a preset period of time, for example, 93 seconds, and then the battery management module 2 starts to enter the ready working mode, and the low-voltage battery pack 4 starts to perform self-checking. In the self-checking process, if a fault exists, a fault lamp is turned on to prompt an operator to carry out troubleshooting and maintenance. If no fault exists, the battery management module 2 wakes up the voltage conversion module 6 and performs self-checking, and after the voltage conversion module 6 does not exist, the information such as the current, the voltage and the temperature of the battery pack 4 is collected, so that the electricity safety of the battery pack 4 is ensured. The interlocking switch is mutually associated with the self-resetting power switch 9, and the battery management module 2 can be effectively prevented from being short-circuited through the interlocking relay 8, so that the electricity utilization safety of the battery management module 2 is effectively ensured.
Based on the same general inventive concept, the invention also provides a high-low voltage battery integrated control power supply method.
Fig. 3 is a schematic flow chart of a high-low voltage battery integrated control power supply method according to an embodiment of the present invention.
As shown in fig. 3, in the high-low voltage battery integrated control power supply method provided by the embodiment of the present invention, the execution main body may be the high-low voltage battery integrated control power supply system of any one of the above embodiments, and the method mainly includes the following steps;
301. when the battery management module and the battery pack have no faults, the electric control module controls the battery pack to supply power at low voltage through the battery management module according to the closed state of the total switch.
In the application process, the low-voltage power supply can be controlled by the battery management module 2 and the electric control module 1, and when the electric control module works normally, the total electric switch 3 can be switched to the corresponding position, and the electric control module 1 can control the low-voltage battery pack 4 to supply the low-voltage power according to the closing state of the total electric switch through the battery management module 2. That is, if the battery management module 2 is switched to ACC, the electronic control module 1 controls the low-voltage battery set 4 to supply power to ACC, and if the battery management module is switched to ON, controls the low-voltage battery set 4 to supply power to ACC, so that each situation is not described in a one-to-one list.
302. When the battery management module and/or the battery pack fails, the electric control module converts the voltage of the high-voltage battery pack into target voltage through the voltage conversion module, and the whole vehicle is powered through the target voltage according to the closing state of the total electric switch.
When the battery management module 2 and/or the low-voltage battery pack 4 fail, the electric control module 1 directly performs power supply control at the moment, the electric control module 1 selectively converts the voltage of the high-voltage battery pack 5 into a target voltage, and then the electric control module 1 supplies power to the whole vehicle according to the power consumption requirement of the total electric switch.
The operation flow will be described as a whole. Firstly, when the vehicle has electricity demand, the self-reset power switch 9 is pressed by hand for three seconds, then the low-voltage battery pack 4 enters a preparation working mode, the low-voltage battery pack 4 performs self-checking, and after self-checking, if the low-voltage battery pack 4 has faults, a fault prompt is sent. If no fault exists, the voltage conversion module 6 is awakened by the battery management module 2, the voltage conversion module 6 performs self-checking, if the fault exists, a fault alarm prompt is sent out, if no fault exists, the voltage value, the temperature value and the current value of the low-voltage battery pack 4 are collected, and parameters such as the state of the low-voltage battery pack 4 can be known in real time according to the voltage value, the current value and the temperature value. And the battery management module 2 controls the on or off of the second sub-switch 72 after connecting the diodes in series, and after the normal electricity output end of the low-voltage battery pack 4 is connected with the chassis fuse, the power distribution is carried out on the normal electricity of the whole vehicle, and the main electric gate 3 is connected with the normal electricity distribution through the 10A fuse.
The operator drives the ignition device 31 from LOCK gear to ACC gear according to the requirement, and at this time, the ignition device 31 controls the first electric door switch 32 to be turned on, so that the low-voltage battery pack 4 supplies power to the infotainment device hung on the ACC. When an operator drives the ignition device 31 from the LOCK gear to the ON gear according to the requirement, the ignition device 31 controls the second electric gate switch 33 and the third electric gate switch 34 to be closed and turned ON, the second electric gate switch 33 supplies ON electricity to the driving safety related control unit, and the third electric gate switch 34 supplies ON electricity to other control units except the driving safety of the whole vehicle, so that different power supply control of the low-voltage battery set 4 is controlled according to the requirement of the ignition control module.
Then, the battery management module 2 detects an ON signal, if the ON signal is detected, the battery management module 2 starts detection management ON the high-voltage battery pack 5, the battery management module 2 performs data interaction with the whole vehicle and the voltage conversion module 6 through the CAN line, meanwhile, the battery management module 2 collects and outputs relevant information ON the high-voltage battery pack 5, judges whether the high-voltage battery pack 5 has an alarm, if so, performs troubleshooting maintenance, if not, controls the first sub-switch 71 to output, and meanwhile, the output circuit increases diode protection. After the high-voltage battery pack 5 is monitored and managed, the electric control module 1 performs power supply through 10A power distribution insurance, the electric control module 1 performs bus communication with the whole vehicle, after the electric control module 1 receives an ON signal, the electric control module 1 starts to manage the whole vehicle control system, the electric control module 1 outputs a constant-power interlocking signal, the second sub-switch 72 is controlled to keep in a working state, and the whole vehicle can also temporarily run when the low-voltage battery pack 4 fails. For example, when the low-voltage battery pack 4 fails, the electronic control module 1 activates the voltage conversion module 6, and the voltage conversion module 6 converts the high-voltage battery pack 5 into 24V voltage, so as to perform power supply control of the whole vehicle. Thus, even if the low-voltage battery pack 4 or the related circuit fails, the electric control module 1 and the voltage conversion module 6 can convert the voltage of the high-voltage battery pack 5 to supply the low-voltage electricity of the whole vehicle, and the like, so as to ensure the electricity consumption.
After the whole vehicle is ensured to be powered, in a normal working state, the battery management module 2 monitors and calculates the electric quantity of the 24V low-voltage battery pack 4 in real time. When the current of the low-voltage battery pack 4 is lower than 30% or the voltage is lower than 22V, the voltage conversion module 6 is powered by a 10A fuse at the constant-voltage output end and is connected with the whole vehicle through a CAN bus, meanwhile, the current of the whole vehicle CAN be monitored in real time, and when the discharging current of the low-voltage battery pack 4 is higher than 20A, or the condition that the current of the low-voltage battery pack 4 is lower than 30% or the voltage is lower than 22V is met, the voltage conversion module 6 and the high-voltage distribution circuit are awakened at the moment. The voltage conversion module 6 converts the high voltage of the high-voltage battery pack 5 into 24V voltage to charge the low-voltage battery pack 4, and stops charging when the electric quantity of the low-voltage battery pack 4 exceeds 95%. Then, an ON signal is detected, when the battery management module 2 detects that the ON signal is continuous for 5 seconds and has no signal, the high-voltage power consumption requirement is not met, the whole vehicle enters a low-power consumption sleep mode, and meanwhile, the parameter state of the low-voltage battery pack 4 is monitored. The battery management module 2 turns off the first sub-switch 71, the whole vehicle only outputs normal electricity, if the vehicle does not have any electricity demand, at this time, an operator can turn off the low-voltage battery pack 4 by long-pressing the self-resetting power switch 9 for a certain period of time, the low-voltage battery pack 4 does not externally supply power any more, the battery management module 2 controls the interlocking relay 8 to be disconnected, all electric equipment and control units stop working, and the vehicle integrally enters a dormant parking state.
Based on the same general inventive concept, the present invention also provides a working machine including the high-low voltage battery integrated control power supply system of any one of the above embodiments, or for executing the high-low voltage battery integrated control power supply method of any one of the above embodiments. For example, the work machine includes a purely electric work machine, an oil-electric hybrid work machine, or the like.
Fig. 4 is a schematic structural diagram of an electronic device provided by the present invention.
As shown in fig. 4, the electronic device may include: processor 410, communication interface (Communications Interface) 420, memory 430 and communication bus 440, wherein processor 410, communication interface 420 and memory 430 communicate with each other via communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform a high and low battery integrated control power method comprising: when the battery management module and the low-voltage battery pack have no faults, the electric control module controls the low-voltage battery pack to supply power at low voltage through the battery management module according to the closing state of the total switch; when the battery management module and/or the low-voltage battery pack has no faults, the electric control module converts the voltage of the high-voltage battery pack into a target voltage through the voltage conversion module, and the whole vehicle power supply is carried out through the target voltage according to the closing state of the total electric gate.
Further, the logic instructions in the memory 430 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, where the computer program, when executed by a processor, can perform a method for controlling power supply of a high-voltage battery and a low-voltage battery provided by the above methods, where the method includes: when the battery management module and the low-voltage battery pack have no faults, the electric control module controls the low-voltage battery pack to supply power at low voltage through the battery management module according to the closing state of the total switch; when the battery management module and/or the low-voltage battery pack has no faults, the electric control module converts the voltage of the high-voltage battery pack into a target voltage through the voltage conversion module, and the whole vehicle power supply is carried out through the target voltage according to the closing state of the total electric gate.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the high and low voltage battery integrated control power supply method provided by the above methods, the method comprising: when the battery management module and the low-voltage battery pack have no faults, the electric control module controls the low-voltage battery pack to supply power at low voltage through the battery management module according to the closing state of the total switch; when the battery management module and/or the low-voltage battery pack has no faults, the electric control module converts the voltage of the high-voltage battery pack into a target voltage through the voltage conversion module, and the whole vehicle power supply is carried out through the target voltage according to the closing state of the total electric gate.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A high and low voltage battery integrated control power supply system, comprising: the system comprises a main switch, an electric control module, a high-voltage battery pack, a low-voltage battery pack and a battery management module;
the high-voltage battery pack, the low-voltage battery pack and the battery management module are integrally arranged in the same box body, the high-voltage battery pack and the low-voltage battery pack are connected with the battery management module, the total electric switch is connected with the electric control module, and the electric control module is also connected with the battery management module;
when the main electric door is closed, the electric control module sends a control instruction to the battery management module according to the closing state of the main electric door, and the battery management module controls the high-voltage battery pack and the low-voltage battery pack to carry out high-voltage power supply and low-voltage power supply on the whole vehicle according to the control instruction.
2. The high and low voltage battery integrated control power supply system of claim 1, further comprising a switch control module;
one end of the switch control module is connected with the battery management module, and the other end of the switch control module is connected with the main switch and the low-voltage power utilization module;
the switch control module is used for controlling the on-off of the low-voltage power utilization module, the total switch and the low-voltage battery pack.
3. The high and low voltage battery integrated control power supply system of claim 2, wherein the switch control module comprises a first sub-switch and a second sub-switch;
one end of the first sub-switch is connected with the battery management module, the other end of the first sub-switch is connected with the low-voltage power utilization module, one end of the second sub-switch is connected with the battery management module, and the other end of the second sub-switch is connected with the main switch;
the first sub-switch is used for controlling the on-off of the low-voltage power utilization module and the low-voltage battery pack, and the second sub-switch is used for controlling the on-off of the main switch and the low-voltage battery pack.
4. The high and low voltage battery integrated control power supply system of claim 3, wherein the switch control module further comprises a first diode and a second diode;
the first diode is connected in series between the second sub-switch and the battery management module, and the second diode is connected in series between the first sub-switch and the battery management module;
the first diode is used for controlling the battery management module to unidirectionally control the second sub-switch to be turned on or turned off, and the second diode is used for controlling the battery management module to unidirectionally control the first sub-switch to be turned on or turned off.
5. The high and low voltage battery integrated control power supply system of claim 3, further comprising a third diode and a fourth diode;
the third diode is connected in series between the first sub-switch and the electronic control module, and the fourth diode is connected in series between the second sub-switch and the electronic control module;
the third diode is used for controlling the electronic control module to unidirectionally control the on/off of the first sub-switch, and the fourth diode is used for controlling the electronic control module to unidirectionally control the on/off of the second sub-switch.
6. The high and low voltage battery integrated control power supply system of claim 1, wherein the total electric gate comprises an ignition device, a first electric gate switch, a second electric gate switch, and a third electric gate switch;
the first electric door switch is connected with the ACC of the ignition device, the second electric door switch is electrically connected with the first ON of the ignition device, the third electric door switch is electrically connected with the second ON of the ignition device, and the ignition device is further connected with the electronic control module.
7. The high and low voltage integrated control power supply system according to claim 1, further comprising a voltage conversion module;
the input end of the voltage conversion module is connected with the high-voltage battery pack, the output end of the voltage conversion module is connected with the low-voltage battery pack, and the voltage conversion module is also connected with the electric control module.
8. The high and low voltage battery integrated control power supply system according to any one of claims 1-7, further comprising an interlock switch and a self-resetting power switch;
one end of the interlocking switch is connected with the battery management module, the other end of the interlocking switch is connected with the low-voltage battery pack, and the self-resetting power switch is connected in series between the low-voltage battery pack and the battery management module;
the self-resetting power switch and the interlocking switch are used for conducting self-checking on the low-voltage battery pack.
9. A high-low voltage battery integrated control power supply method, which is applied to the high-low voltage battery integrated control power supply system as claimed in any one of claims 1-8, and comprises the following steps:
when the battery management module and the low-voltage battery pack have no faults, the electric control module controls the low-voltage battery pack to supply power at low voltage through the battery management module according to the closing state of the total switch;
when the battery management module and/or the low-voltage battery pack has faults, the electric control module converts the voltage of the high-voltage battery pack into target voltage through the voltage conversion module, and the whole vehicle power supply is carried out through the target voltage according to the closing state of the total switch.
10. A working machine comprising the high-low voltage battery integrated control power supply system according to any one of claims 1 to 8, or for executing the high-low voltage battery integrated control power supply method according to claim 9.
CN202310189002.9A 2023-02-27 2023-02-27 High-low voltage battery integrated control power supply system, method and operation machine Pending CN116176351A (en)

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CN202310189002.9A CN116176351A (en) 2023-02-27 2023-02-27 High-low voltage battery integrated control power supply system, method and operation machine

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Application Number Priority Date Filing Date Title
CN202310189002.9A CN116176351A (en) 2023-02-27 2023-02-27 High-low voltage battery integrated control power supply system, method and operation machine

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