CN107128190B - Battery power supply control method and system for electric vehicle - Google Patents
Battery power supply control method and system for electric vehicle Download PDFInfo
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- CN107128190B CN107128190B CN201710316121.0A CN201710316121A CN107128190B CN 107128190 B CN107128190 B CN 107128190B CN 201710316121 A CN201710316121 A CN 201710316121A CN 107128190 B CN107128190 B CN 107128190B
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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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
-
- 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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
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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
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- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a battery power supply control method and a battery power supply control system for an electric vehicle, wherein the method comprises the following steps: the auxiliary monitoring device detects the current battery working mode and detects the output current of the battery, and the battery state control device detects the working state and working parameters of a single battery; the battery state control device closes the charging MOS tube and the discharging MOS tube for 1 second; the battery state control device performs the operation of opening the charging MOS tube or the discharging MOS tube according to the working state and the working parameters of the single battery; the battery is charged or discharged under the control of the battery state control device. The invention monitors the mode and the output current of the battery by arranging the auxiliary monitoring device between the battery and the charger and/or the electric vehicle, realizes the safety management of the battery by detecting and controlling the control of the battery state control device on the charging MOS tube and the discharging MOS tube of the battery, and can not cause mutual charging because of different voltages of a plurality of batteries.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery power supply control method and system for an electric vehicle.
Background
In the prior art, the batteries of the electric vehicles are basically single batteries, and the use of double batteries is still rare. The application of the double-battery technology is to upgrade the single-battery technology, so that the original single battery can be kept connected to the electric vehicle, and the double-battery access is added for use.
Disclosure of Invention
The embodiment of the invention aims to solve the technical problem that: a battery power supply control method and system for an electric vehicle are provided to improve the efficiency of multi-battery usage management of the electric vehicle.
According to an aspect of an embodiment of the present invention, there is provided a battery power supply control method for an electric vehicle, including:
the auxiliary monitoring device detects the current battery working mode and detects the output current of the battery, and the battery state control device detects the working state and working parameters of a single battery;
the battery state control device closes the charging MOS tube and the discharging MOS tube for 1 second;
the battery state control device performs the operation of opening the charging MOS tube or the discharging MOS tube according to the working state and the working parameters of the single battery;
the battery is charged or discharged under the control of the battery state control device.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, the battery operating mode includes:
the battery cell mode comprises a battery, a battery state control device and an auxiliary monitoring device;
the battery cell connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device and a charger;
the single battery is connected with the electric vehicle mode and comprises a battery, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the double-battery connection electric vehicle mode comprises two batteries, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the battery connection electric vehicle connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
the mode that the double-battery connected electric vehicle is connected with the charger comprises two batteries, a battery state control device, an auxiliary monitoring device, the charger and the electric vehicle.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off in the single-battery mode.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, when the single battery is connected to the charger mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the charging MOS transistor of the battery state control device is turned on at 2 nd second, and the discharging MOS transistor of the battery state control device is turned on when the battery state control device detects that the output current of the battery is greater than 0.5A.
In another embodiment of the above method and system for controlling battery power supply of an electric vehicle according to the present invention, when the single battery is connected to the electric vehicle mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the discharging MOS transistor of the battery state control device is turned on at 2 nd second, and when the battery state control device detects that the output current of the battery is greater than 0.5A, the charging MOS transistor of the battery state control device is turned on.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, when the dual battery is connected to the electric vehicle,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control devices of the plurality of batteries are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the high-voltage battery is opened, and a charging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the charging MOS tube of the battery state control device of the low-voltage battery is opened.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, when the single battery is connected to the electric vehicle in the charger mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the charging MOS transistor of the battery state control device is turned on at 2 nd second, and the discharging MOS transistor of the battery state control device is turned on when the battery state control device detects that the output current of the battery is greater than 0.5A.
In another embodiment of the above battery power supply control method for an electric vehicle according to the present invention, when the electric vehicle is connected to the dual battery,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device of the plurality of batteries are closed, and the plurality of batteries are not charged and discharged;
in the 2 nd second, the charging MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a discharging MOS tube of the battery state control device of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the discharge MOS tube of the battery state control device of the low-voltage battery is opened.
According to an aspect of an embodiment of the present invention, there is provided a battery power supply control system of an electric vehicle, including: the system comprises a battery, a battery state control device, an auxiliary monitoring device, an electric vehicle and/or a charger;
the battery comprises at least one block;
the battery state control device is connected with the battery and used for detecting the working state and working parameters of the corresponding battery and controlling the charging and discharging of the battery through a charging MOS tube and a discharging MOS tube of the battery state control device;
the auxiliary monitoring device is connected with the battery state control device and is used for detecting the working mode of the battery and detecting the output current of the battery;
the electric vehicle and/or the charger are connected with the auxiliary monitoring device and used for receiving power supply of the battery and/or charging the battery under the control of the auxiliary monitoring device.
In another embodiment of the above battery power supply control system for an electric vehicle according to the present invention, the operating mode of the battery includes:
the battery cell mode comprises a battery, a battery state control device and an auxiliary monitoring device;
the battery cell connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device and a charger;
the single battery is connected with the electric vehicle mode and comprises a battery, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the double-battery connection electric vehicle mode comprises two batteries, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the battery connection electric vehicle connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
the mode that the double-battery connected electric vehicle is connected with the charger comprises two batteries, a battery state control device, an auxiliary monitoring device, the charger and the electric vehicle.
In another embodiment of the above battery power supply control system for an electric vehicle according to the present invention, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off in the single-battery mode.
In another embodiment of the above battery power supply control system for the electric vehicle according to the invention, when the single battery is connected to the charger mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the charging MOS transistor of the battery state control device is turned on at 2 nd second, and when the battery state control device detects that the output current of the battery is greater than 0.5A, the discharging MOS transistor of the battery state control device is turned on.
In another embodiment of the above battery power supply control system for the electric vehicle according to the invention, when the single battery is connected to the electric vehicle mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the discharging MOS transistor of the battery state control device is turned on at 2 nd second, and when the battery state control device detects that the output current of the battery is greater than 0.5A, the charging MOS transistor of the battery state control device is turned on.
In another embodiment of the above battery power control system for an electric vehicle according to the present invention, when the dual battery is connected to the electric vehicle,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control devices of the plurality of batteries are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the high-voltage battery is opened, and a charging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the charging MOS tube of the battery state control device of the low-voltage battery is opened.
In another embodiment of the above battery power supply control system for the electric vehicle according to the invention, when the single battery is connected to the electric vehicle in the charger mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device are turned off at 1 st second, the charging MOS transistor of the battery state control device is turned on at 2 nd second, and the discharging MOS transistor of the battery state control device is turned on when the battery state control device detects that the output current of the battery is greater than 0.5A.
In another embodiment of the above battery power supply control system for an electric vehicle according to the present invention, when the dual battery is connected to the electric vehicle in the charger connection mode,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device of the plurality of batteries are closed, and the plurality of batteries are not charged and discharged;
in the 2 nd second, the charging MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a discharging MOS tube of the battery state control device of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the discharge MOS tube of the battery state control device of the low-voltage battery is opened.
Compared with the prior art, the invention has the following advantages:
the invention monitors the mode and the output current of the battery by arranging the auxiliary monitoring device between the battery and the charger and/or the electric vehicle, realizes the safety management of the battery by detecting and controlling the control of the battery state control device on the charging MOS tube and the discharging MOS tube of the battery, and can not cause mutual charging because of different voltages of a plurality of batteries.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings used in the description of the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a battery power supply control system of an electric vehicle of the present invention.
Fig. 2 is a flowchart of one embodiment of a battery power supply control method of an electric vehicle of the present invention.
In the figure: 1 battery, 2 battery state control devices, 3 auxiliary monitoring devices, 4 electric vehicles and 5 chargers.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a battery power supply control method and system for an electric vehicle according to the present invention in more detail with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of an embodiment of a battery power supply control system of an electric vehicle of the present invention, and as shown in fig. 1, the battery power supply control system of the electric vehicle of the embodiment includes:
the system comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3, an electric vehicle 4 and/or a charger 5;
the battery 1 comprises at least one block;
the battery state control device 2 is connected with the battery 1 and is used for controlling the charging and discharging of the battery 1 through a charging MOS tube and a discharging MOS tube of the battery state control device 2;
the auxiliary monitoring device 3 is connected with the battery state control device 2 and is used for detecting the working mode of the battery 1 and detecting the output current of the battery 1;
the electric vehicle 3 and/or the charger 4 are connected with the auxiliary monitoring device 3 and used for receiving power supply of the battery 1 and/or charging the battery 1 under the control of the auxiliary monitoring device 3.
The operating modes of the battery 1 include:
the single battery mode comprises a battery 1, a battery state control device 2 and an auxiliary monitoring device 3;
the battery cell connection charger mode comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3 and a charger 5;
the single battery connection electric vehicle mode comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3 and an electric vehicle 4;
the double-battery connection electric vehicle mode comprises two batteries 1, a battery state control device 2, an auxiliary monitoring device 3 and an electric vehicle 4;
the mode that a single battery is connected with an electric vehicle and is connected with a charger comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3, a charger 5 and an electric vehicle 4;
the mode that the double-battery connected electric vehicle is connected with the charger comprises two batteries 1, a battery state control device 2, an auxiliary monitoring device 3, a charger 5 and an electric vehicle 4.
When the auxiliary monitoring device 3 detects that the system is in the single-battery mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device 2 are turned off.
When the auxiliary monitoring device 3 detects that the system is in the single battery connection charger mode, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the charging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the battery state control device 2 detects that the output current of the battery 1 is larger than 0.5A, the discharging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in the single battery connection electric vehicle mode, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the discharging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the battery state control device 2 detects that the output current of the battery 1 is larger than 0.5A, the charging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in said dual battery connected electric vehicle mode,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control device 2 of the plurality of batteries 1 are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control device 2 of the plurality of batteries 1 are opened;
when the voltages of the batteries 1 are different, the output current of the high-voltage battery is larger than 0.5A, the charging MOS tube of the battery state control device 2 of the high-voltage battery is opened, and the charging MOS tube of the battery state control device 2 of the low-voltage battery is not opened;
when the output current of the low-voltage battery is greater than 0.5A, the charging MOS transistor of the battery state control device 2 of the low-voltage battery is turned on.
When the auxiliary monitoring device 3 detects that the system is in a mode that the monocell is connected with the electric vehicle to be connected with the charger, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the charging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the auxiliary monitoring device 3 detects that the output current of the battery 1 is larger than 0.5A, the discharging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in the dual battery connected electric vehicle connected charger mode,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device 2 of the plurality of batteries 1 are closed, and the plurality of batteries 1 are not charged and are not discharged;
in the 2 nd second, the charging MOS tubes of the battery state control device 2 of the plurality of batteries 1 are opened;
when the voltages of the batteries 1 are different, the output current of the high-voltage battery is larger than 0.5A, a discharging MOS tube of the battery state control device 2 of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device 2 of the low-voltage battery is not opened;
the discharge MOS transistor of the battery state control device 2 for the low-voltage battery is turned on when the output current of the low-voltage battery is greater than 0.5A.
Fig. 2 is a flowchart of an embodiment of a battery power supply control method of an electric vehicle of the present invention, which includes, as shown in fig. 2:
10, the auxiliary monitoring device 3 detects the current working mode of the battery 1 and detects the output current of the battery 1, and the battery state control device 2 detects the working state and working parameters of a single battery 1;
20, the battery state control device 2 closes the charging MOS tube and the discharging MOS tube for 1 second;
30, the battery state control device 2 performs the operation of opening the charging MOS tube or the discharging MOS tube according to the working state and the working parameters of the single battery 1;
the battery 1 is charged or discharged under the control of the battery state control device 2 40.
The operating modes of the battery 1 include:
the single battery mode comprises a battery 1, a battery state control device 2 and an auxiliary monitoring device 3;
the battery cell connection charger mode comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3 and a charger 5;
the single battery connection electric vehicle mode comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3 and an electric vehicle 4;
the double-battery connection electric vehicle mode comprises two batteries 1, a battery state control device 2, an auxiliary monitoring device 3 and an electric vehicle 4;
the mode that a single battery is connected with an electric vehicle and is connected with a charger comprises a battery 1, a battery state control device 2, an auxiliary monitoring device 3, a charger 5 and an electric vehicle 4;
the mode that the double-battery connected electric vehicle is connected with the charger comprises two batteries 1, a battery state control device 2, an auxiliary monitoring device 3, a charger 5 and an electric vehicle 4.
When the auxiliary monitoring device 3 detects that the system is in the single-battery mode, the charging MOS transistor and the discharging MOS transistor of the battery state control device 2 are turned off.
When the auxiliary monitoring device 3 detects that the system is in the single battery connection charger mode, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the charging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the auxiliary monitoring device 3 detects that the output current of the battery 1 is larger than 0.5A, the discharging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in the single battery connection electric vehicle mode, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the discharging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the auxiliary monitoring device 3 detects that the output current of the battery 1 is larger than 0.5A, the charging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in said dual battery connected electric vehicle mode,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control device 2 of the plurality of batteries 1 are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control device 2 of the plurality of batteries 1 are opened;
when the voltages of the batteries 1 are different, the output current of the high-voltage battery is larger than 0.5A, the charging MOS tube of the battery state control device 2 of the high-voltage battery is opened, and the charging MOS tube of the battery state control device 2 of the low-voltage battery is not opened;
when the output current of the low-voltage battery is greater than 0.5A, the charging MOS transistor of the battery state control device 2 of the low-voltage battery is turned on.
When the auxiliary monitoring device 3 detects that the system is in a mode that the monocell is connected with the electric vehicle to be connected with the charger, the charging MOS tube and the discharging MOS tube of the battery state control device 2 are closed in the 1 st second, the charging MOS tube of the battery state control device 2 is opened in the 2 nd second, and when the auxiliary monitoring device 3 detects that the output current of the battery 1 is larger than 0.5A, the discharging MOS tube of the battery state control device 2 is opened.
When the auxiliary monitoring device 3 detects that the system is in the dual battery connected electric vehicle connected charger mode,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device 2 of the plurality of batteries 1 are closed, and the plurality of batteries 1 are not charged and are not discharged;
in the 2 nd second, the charging MOS tubes of the battery state control device 2 of the plurality of batteries 1 are opened;
when the voltages of the batteries 1 are different, the output current of the high-voltage battery is larger than 0.5A, a discharging MOS tube of the battery state control device 2 of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device 2 of the low-voltage battery is not opened;
the discharge MOS transistor of the battery state control device 2 for the low-voltage battery is turned on when the output current of the low-voltage battery is greater than 0.5A.
The above detailed description is provided for the battery power supply control method and system of the electric vehicle, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (2)
1. A battery power supply control method of an electric vehicle, characterized by comprising:
the auxiliary monitoring device detects the current battery working mode and detects the output current of the battery, and the battery state control device detects the working state and working parameters of a single battery;
the battery state control device closes the charging MOS tube and the discharging MOS tube for 1 second;
the battery state control device performs the operation of opening the charging MOS tube or the discharging MOS tube according to the working state and the working parameters of the single battery;
the battery is charged or discharged under the control of the battery state control device;
the battery operating modes include:
the battery cell mode comprises a battery, a battery state control device and an auxiliary monitoring device;
the battery cell connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device and a charger;
the single battery is connected with the electric vehicle mode and comprises a battery, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the double-battery connection electric vehicle mode comprises two batteries, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the battery connection electric vehicle connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
the double-battery connection electric vehicle connection charger mode comprises two batteries, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
when the dual battery is connected to the electric vehicle mode,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control devices of the plurality of batteries are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the high-voltage battery is opened, and a charging MOS tube of the battery state control device of the low-voltage battery is not opened;
when the output current of the low-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the low-voltage battery is opened;
in the single battery mode, a charging MOS tube and a discharging MOS tube of the battery state control device are closed;
when the monocell is connected with the charger mode, the charging MOS tube and the discharging MOS tube of the battery state control device are closed in the 1 st second, the charging MOS tube of the battery state control device is opened in the 2 nd second, and the discharging MOS tube of the battery state control device is opened when the battery state control device detects that the output current of the battery is greater than 0.5A;
when the monocell is connected with the electric vehicle mode, the charging MOS tube and the discharging MOS tube of the battery state control device are closed in the 1 st second, the discharging MOS tube of the battery state control device is opened in the 2 nd second, and when the battery state control device detects that the output current of the battery is greater than 0.5A, the charging MOS tube of the battery state control device is opened;
when the monocell is connected with the electric vehicle and is connected with a charger mode, a charging MOS tube and a discharging MOS tube of the battery state control device are closed in the 1 st second, the charging MOS tube of the battery state control device is opened in the 2 nd second, and the discharging MOS tube of the battery state control device is opened when the auxiliary monitoring device detects that the output current of the battery is greater than 0.5A;
when the double batteries are connected with the electric vehicle and the electric vehicle is connected with the charger,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device of the plurality of batteries are closed, and the plurality of batteries are not charged and discharged;
in the 2 nd second, the charging MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a discharging MOS tube of the battery state control device of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the discharge MOS tube of the battery state control device of the low-voltage battery is opened.
2. A battery-powered control system for an electric vehicle, comprising: the system comprises a battery, a battery state control device, an auxiliary monitoring device, an electric vehicle and/or a charger;
the battery comprises at least one block;
the battery state control device is connected with the battery and used for detecting the working state and working parameters of the corresponding battery and controlling the charging and discharging of the battery through a charging MOS tube and a discharging MOS tube of the battery state control device;
the auxiliary monitoring device is connected with the battery state control device and is used for detecting the working mode of the battery and detecting the output current of the battery;
the electric vehicle and/or the charger are/is connected with the auxiliary monitoring device and used for receiving power supply of the battery and/or charging the battery under the control of the auxiliary monitoring device;
the operating modes of the battery include:
the battery cell mode comprises a battery, a battery state control device and an auxiliary monitoring device;
the battery cell connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device and a charger;
the single battery is connected with the electric vehicle mode and comprises a battery, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the double-battery connection electric vehicle mode comprises two batteries, a battery state control device, an auxiliary monitoring device and an electric vehicle;
the battery connection electric vehicle connection charger mode comprises a battery, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
the double-battery connection electric vehicle connection charger mode comprises two batteries, a battery state control device, an auxiliary monitoring device, a charger and an electric vehicle;
when the dual battery is connected to the electric vehicle mode,
in the 1 st second, the charging MOS tubes and the discharging MOS tubes of the battery state control devices of the plurality of batteries are closed;
in the 2 nd second, the discharge MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the high-voltage battery is opened, and a charging MOS tube of the battery state control device of the low-voltage battery is not opened;
when the output current of the low-voltage battery is greater than 0.5A, a charging MOS tube of the battery state control device of the low-voltage battery is opened;
in the single battery mode, a charging MOS tube and a discharging MOS tube of the battery state control device are closed;
when the monocell is connected with the charger mode, the charging MOS tube and the discharging MOS tube of the battery state control device are closed in the 1 st second, the charging MOS tube of the battery state control device is opened in the 2 nd second, and the discharging MOS tube of the battery state control device is opened when the battery state control device detects that the output current of the battery is greater than 0.5A;
when the monocell is connected with the electric vehicle mode, the charging MOS tube and the discharging MOS tube of the battery state control device are closed in the 1 st second, the discharging MOS tube of the battery state control device is opened in the 2 nd second, and when the battery state control device detects that the output current of the battery is greater than 0.5A, the charging MOS tube of the battery state control device is opened;
when the monocell is connected with the electric vehicle and is connected with a charger mode, a charging MOS tube and a discharging MOS tube of the battery state control device are closed in the 1 st second, the charging MOS tube of the battery state control device is opened in the 2 nd second, and the discharging MOS tube of the battery state control device is opened when the battery state control device detects that the output current of the battery is greater than 0.5A;
when the double batteries are connected with the electric vehicle and the electric vehicle is connected with the charger,
in the 1 st second, the charging MOS tube and the discharging MOS tube of the battery state control device of the plurality of batteries are closed, and the plurality of batteries are not charged and discharged;
in the 2 nd second, the charging MOS tubes of the battery state control devices of the plurality of batteries are opened;
when the voltages of the batteries are different, the output current of the high-voltage battery is greater than 0.5A, a discharging MOS tube of the battery state control device of the high-voltage battery is opened, and a discharging MOS tube of the battery state control device of the low-voltage battery is not opened;
and when the output current of the low-voltage battery is greater than 0.5A, the discharge MOS tube of the battery state control device of the low-voltage battery is opened.
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