CN111619353B - State management method for automobile start-stop battery management system - Google Patents
State management method for automobile start-stop battery management system Download PDFInfo
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- CN111619353B CN111619353B CN202010456646.6A CN202010456646A CN111619353B CN 111619353 B CN111619353 B CN 111619353B CN 202010456646 A CN202010456646 A CN 202010456646A CN 111619353 B CN111619353 B CN 111619353B
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- state
- management system
- battery management
- relay
- shutdown
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- 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 belongs to the technical field of automobile starting and stopping batteries, in particular to a state management method of an automobile starting and stopping battery management system, which comprises an initial state that the battery management system starts to work after a finished automobile provides a power supply and an activation signal for the battery management system; the system judges whether a self-checking state of the fault that the relay can not be closed exists; the battery management system waits for the ready-to-discharge state of the finished vehicle closing relay instruction in the state; the battery management system waits for the whole vehicle to finish a pre-charging state of pre-charging; the battery management system is in a normal operation state; the battery management system detects the fault of the relay to be cut off and the error state that the cutting-off delay time is not reached; an off state in which a battery management system relay is not closed; the battery management system prepares for a shutdown state of a hibernate shutdown. The control method and the control device can conveniently realize the control of the battery management system, ensure the stable operation of the battery management system when the automobile is started and stopped, and improve the safety of the starting and stopping technology and the experience of users.
Description
Technical Field
The invention belongs to the technical field of automobile starting and stopping batteries, and particularly relates to a state management method of an automobile starting and stopping battery management system.
Background
With the development of the automobile industry, a plurality of automobiles adopt environment-friendly automatic start-stop, wherein the automatic start-stop is that when the automobiles are in a stop state (non-parking state), an engine stops working (rather than the traditional idle speed maintenance), and lubricating oil in the engine continuously runs while the engine stops working, so that the interior of the engine is kept lubricated; when the brake pedal is released, the engine is restarted, and at the moment, the lubricating oil is circulated all the time, so that the abrasion of the interior of the engine can be avoided even if the engine is stopped and started frequently. However, the conventional storage battery is applied to automatic start and stop, the vehicle-mounted electronic equipment can be damaged, current is pulled away by the starting motor when the storage battery is particularly started, insufficient voltage or even power failure can occur to other vehicle-mounted electric appliances, the radio does not have sound, the air conditioner stops working and other phenomena occur, and the conventional storage battery cannot meet the requirement of automatic start and stop for long-term use. The AGM storage battery solves various problems of insufficient power supply in the existing automatic start-stop process, can provide larger current in a short time, has the function of repeated charging, is quick, and greatly improves the durability of the storage battery. It can be seen that automatic start-stop is dependent on the battery considerably and requires a high battery.
However, for internal control circuits such as multimedia and main control boards on an automobile and load circuits such as air conditioners, the ignition switch is used for directly controlling the on-off of the output voltage of an automobile battery in the starting and stopping processes, when the ignition switch is started and stopped, the conditions of direct power-on or power-off of the automobile load exist, and the like, and the system state protection of auxiliary starting and stopping exists between the automobile battery and the power load. There is therefore a need for an improved battery management system.
Disclosure of Invention
One of the objectives of the present invention is to provide a method for managing the state of a battery management system during starting and stopping an automobile, which is used to quickly and clearly judge the working conditions inside and outside the battery management system.
The technical scheme of the invention is as follows:
the state management method of the automobile start-stop battery management system comprises the following steps:
initial state: after the whole vehicle provides power and activation signals for the battery management system, the battery management system starts to work;
self-checking state: the system judges whether a fault that the relay cannot be closed exists;
preparing a discharge state: waiting for a relay closing instruction of the whole vehicle in the state by the battery management system;
a pre-charging state: the battery management system waits for the whole vehicle to finish pre-charging;
the operation state is as follows: the battery management system is in normal operation, and the relay is in a closed state;
error state: the battery management system detects the fault of the relay to be cut off, the cutting-off delay time is not up, and the relay is in a closed state;
a cut-off state: when the battery management system has a fault, the relay is in a disconnected state;
shutdown state: the battery management system prepares for shutdown dormancy;
when the battery management system enters a self-checking state and is in a system self-checking state, judging that the system of the battery management system is normally operated, and enabling the battery management system to enter a discharge preparation state; judging that the system operates normally and receiving a command of closing a relay of the whole vehicle under a discharge preparation state, and enabling the battery management system to enter a pre-charging state; in the pre-charging state, judging that the system normally operates and detecting that the voltages of the inner side and the outer side of the relay are basically equal, indicating that the pre-charging of the whole vehicle is finished, controlling the relay to be closed by the battery management system, and enabling the battery management system to enter the operating state; judging that the system generates an alarm for switching off the relay and the switching-off delay is not reached in the running state, and reporting the fault to the whole vehicle when the battery management system enters the error state; judging that the relay is cut off when the relay is delayed and cutting off the relay under the error state, and enabling the battery management system to enter a cut-off state; and judging that the battery management system meets the dormancy condition in the cut-off state, enabling the battery management system to enter a shutdown state, judging that the shutdown delay time is up in the shutdown state, and enabling the system to be shutdown for waiting for next awakening.
Further, the self-test state further includes: if the system meets the dormancy condition, the system is transferred to a shutdown state; and if the fault that the relay can not be closed exists, waiting for the cut-off delay time corresponding to the fault to arrive, and transferring to a cut-off state.
Further, the preparing for discharging state further comprises: if a failure that fails to close the relay occurs, the relay is switched to the off state.
Further, the pre-charging state further includes: if the system meets the dormancy condition, migrating to a shutdown state; if an alarm that the relay cannot be closed is generated, the relay is switched to the off state.
Further, the operating state further includes: judging that no fault needing to cut off the relay exists, and simultaneously, receiving a command of cutting off the relay, cutting off the relay and transferring to a state of preparing for discharging; and if the sleep condition is met, the relay is switched off and the system is shifted to a shutdown state.
Further, the error state further includes: if the sleep condition is met, the relay is switched off and the system is shifted to a shutdown state; if the fault disappears within the relay cut-off delay time, the state of the battery management system is transferred to the running state.
Further, the disconnection state further includes: if the system alarm disappears, the system is transferred to a ready-to-discharge state.
Further, the shutdown state further includes: and if the shutdown condition is not met before shutdown is finished, the state is shifted to a ready-to-discharge state.
Further, in the self-checking state, if the self-checking finds that the fault that the power-on is not allowed exists, the self-checking is stopped until the alarm is delayed and the switching-off state is jumped.
The invention has the beneficial effects that: according to the automobile start-stop battery management system state management method, the control of a battery management system can be conveniently and reliably realized through the state management of the battery management system, the information interaction with the whole automobile is realized, the control of the battery management system can be conveniently and rapidly realized, the internal and external working conditions of the battery management system can be rapidly and clearly judged according to the difference of states, the stable operation of the battery management system when the automobile is started and stopped is ensured, the safety of the start-stop technology and the experience of a user are improved, and the development of the start-stop technology and the battery management of the automobile is facilitated to be promoted.
Drawings
Fig. 1 is a block diagram of the overall structure of a state management method of an automobile start-stop battery management system according to the present invention.
Detailed Description
As shown in fig. 1, the state management method for an automobile start-stop battery management system according to the present invention includes a state management method for an automobile start-stop battery management system, where the state of the automobile start-stop battery management system includes an initial state 101, a self-test state 102, a ready-to-discharge state 103, a pre-charge state 104, an operation state 105, an error state 106, a cut-off state 107, and a shutdown state 108, where the initial state 101 is that after a power supply and an activation signal are provided to the battery management system by a finished automobile, the battery management system starts to operate; the self-checking state 102 is that the system judges whether a fault that the relay can not be closed exists; the ready-to-discharge state 103 is a state in which the battery management system waits for a complete vehicle closing relay instruction; the pre-charging state 104 is that the battery management system waits for the complete pre-charging of the whole vehicle; the operation state 105 is that the battery management system is in normal operation, and the relay is in a closed state; the error state 106 is that the battery management system detects a fault that the relay needs to be switched off, the switching-off delay time is not up, and the relay is in a closed state; the battery management system is in a cut-off state 107, the battery management system has a fault, and the relay is in a cut-off state; the power off state 108 prepares the battery management system for power off hibernation.
When the battery management system enters a self-checking state 102 and is in a system self-checking state 102, judging that the system of the battery management system normally operates, enabling the battery management system to enter a discharge preparation state 103, and if the system meets a dormancy condition, transitioning to a shutdown state 108; if there is a failure that cannot close the relay, the relay transitions to the cut-off state 107 after the cut-off delay time corresponding to the failure. When the system is judged to be normally operated in the ready-to-discharge state 103 and a vehicle closing relay command is received, the battery management system enters a pre-charging state 104, and if a fault that the relay cannot be closed occurs, the system transitions to a cut-off state 107. Judging that the system normally operates in a pre-charging state 104, detecting that the voltages of the inner side and the outer side of the relay are basically equal, indicating that the pre-charging of the whole vehicle is finished, controlling the relay to be closed by the battery management system, entering an operating state 105 by the battery management system, and if the system meets a sleep condition, migrating to a shutdown state 108; if an alarm that the relay cannot be closed is generated, the relay shifts to the off state 107. Judging that the system generates an alarm requiring to cut off the relay and the cutting-off delay is not reached under the operation state 105, enabling the battery management system to enter an error state 106, reporting a fault to the whole vehicle, and if the fault requiring to cut off the relay does not exist and a command for cutting off the relay is received, cutting off the relay and transferring to a ready-to-discharge state 103; if the sleep condition is satisfied, the relay is turned off and the system transitions to the power off state 108. If the relay is judged to be cut off and delayed in the error state 106, the relay is cut off, the battery management system enters a cut-off state 107, and if the dormancy condition is met, the relay is cut off and the battery management system is shifted to a shutdown state 108; if the fault disappears within the relay turn-off delay time, the battery management system state transitions to the run state 105. In the off state 107, it is determined that the battery management system satisfies the hibernation condition, the battery management system enters the shutdown state 108, and if the system alarm disappears, the battery management system transitions to the ready-to-discharge state 103. In the shutdown state 108, it is determined that the shutdown delay time is up, the system is shutdown to wait for the next wakeup, and if the shutdown condition is not satisfied before the shutdown is completed, the system is transitioned to the ready-to-discharge state 103.
In a specific self-checking state 102, the system judges whether the relay can not be closed or not, whether the temperature of a single battery is too high or the relay is adhered or not, and when the system is judged to meet the conditions of the dormancy, the system power supply is too low, the whole vehicle communication is not available, and the system activation signal is not available.
Further, in the self-test state 102, if the self-test finds that there is a fault that does not allow power-on, the self-test is stopped until the alarm is delayed, and the self-test jumps to the cut-off state 107.
Through the technical scheme, the automobile start-stop battery management system state management method can conveniently and reliably realize the control of the battery management system through the state management of the battery management system, and the information interaction with the whole automobile, the control of the battery management system can be conveniently and rapidly realized, according to the difference of states, the internal and external working conditions of the battery management system can be rapidly and clearly judged, the stable operation of the battery management system when the automobile is started and stopped is ensured, the safety of the start-stop technology and the experience of a user are improved, and the development of the start-stop technology and the battery management of the automobile is facilitated to be promoted.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept as defined by the claims and their equivalents.
Claims (9)
1. A state management method of an automobile start-stop battery management system comprises the following steps:
initial state: after the whole vehicle provides power and an activation signal for the battery management system, the battery management system starts to work;
self-checking state: the system judges whether a fault that the relay can not be closed exists;
preparing a discharge state: waiting for a relay closing instruction of the whole vehicle in the state by the battery management system;
a pre-charging state: the battery management system waits for the whole vehicle to finish pre-charging;
the operation state is as follows: the battery management system is in normal operation, and the relay is in a closed state;
error state: the battery management system detects the fault of the relay to be cut off, the cutting-off delay time is not up, and the relay is in a closed state;
a cut-off state: when the battery management system has a fault, the relay is in a disconnected state;
shutdown state: the battery management system prepares for shutdown dormancy;
under battery management system entering self-checking state, its characterized in that: judging that the battery management system operates normally, and enabling the battery management system to enter a discharge preparation state; in a discharge preparation state, judging that the system operates normally and receiving a command of closing a relay of the whole vehicle, and enabling the battery management system to enter a pre-charging state; judging that the system normally operates in a pre-charging state and detecting that the voltages of the inner side and the outer side of the relay are basically equal, indicating that the pre-charging of the whole vehicle is finished, controlling the relay to be closed by the battery management system, and enabling the battery management system to enter an operating state; in the running state, judging that the system generates an alarm for cutting off the relay and the cutting-off delay is not reached, and reporting the fault to the whole vehicle when the battery management system enters an error state; in the error state, judging that the relay is cut off when the relay is delayed, and cutting off the relay, wherein the battery management system enters a cut-off state; if the fault disappears within the relay cut-off delay time, the state of the battery management system is transferred to the running state; and in the cut-off state, judging that the battery management system meets the dormancy condition, entering the shutdown state by the battery management system, judging that the shutdown delay time is up in the shutdown state, and waiting for next awakening after the shutdown of the system.
2. The state management method of the automobile start-stop battery management system according to claim 1, characterized by comprising the following steps: when the system is in a self-checking state, if the system meets a dormancy condition, the system is transferred to a shutdown state; and if the fault that the relay can not be closed exists, waiting for the cut-off delay time corresponding to the fault to arrive, and transferring to a cut-off state.
3. The state management method of the automobile start-stop battery management system according to claim 2, characterized by comprising the following steps: when the discharge state is prepared, if a failure that cannot close the relay occurs, the relay is switched to the off state.
4. The state management method of the automobile start-stop battery management system according to claim 3, characterized by comprising the following steps: in the pre-charging state, if the system meets the dormancy condition, the system is transferred to the shutdown state; if an alarm that the relay cannot be closed is generated, the relay is shifted to a cut-off state.
5. The state management method of the automobile start-stop battery management system according to claim 4, characterized by comprising the following steps: when the device is in a running state, judging that no fault needing to cut off the relay exists, and simultaneously, receiving a command of cutting off the relay, cutting off the relay and transferring the relay to a ready discharge state; and if the sleep condition is met, the relay is switched off and the system is shifted to a shutdown state.
6. The state management method of the automobile start-stop battery management system according to claim 5, characterized by comprising the following steps: and in the error state, if the dormancy condition is met, the relay is disconnected and the power-off state is transferred.
7. The state management method of the automobile start-stop battery management system according to claim 6, characterized by comprising the following steps: and in the off state, if the system alarm disappears, the system is shifted to a ready-to-discharge state.
8. The state management method of the automobile start-stop battery management system according to claim 7, characterized by comprising the following steps: and in the shutdown state, if the shutdown condition is not met before the shutdown is finished, the state is transferred to a ready-to-discharge state.
9. The state management method of the automobile start-stop battery management system according to claim 1, characterized by comprising the following steps: in the self-checking state, if the self-checking finds that the fault that the power supply is not allowed exists, the self-checking is stopped until the alarm is delayed and the state is switched to the cut-off state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010456646.6A CN111619353B (en) | 2020-05-26 | 2020-05-26 | State management method for automobile start-stop battery management system |
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| CN202010456646.6A CN111619353B (en) | 2020-05-26 | 2020-05-26 | State management method for automobile start-stop battery management system |
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| CN111619353A CN111619353A (en) | 2020-09-04 |
| CN111619353B true CN111619353B (en) | 2022-09-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2948461B1 (en) * | 2009-07-24 | 2011-07-01 | Renault Sa | METHOD FOR DIAGNOSING THE OPERATION OF A DEVICE FOR CUTTING AND CONNECTING A BATTERY TO A MOTOR VEHICLE EDGE NETWORK |
| CN104071153B (en) * | 2013-03-25 | 2017-02-08 | 北汽福田汽车股份有限公司 | Starting control method for hybrid electric vehicle |
| CN107323265B (en) * | 2016-04-28 | 2020-11-20 | 长城汽车股份有限公司 | Power-on and power-off control method and system for hybrid electric vehicle |
| CN107662500B (en) * | 2016-07-28 | 2020-09-04 | 长城汽车股份有限公司 | Pure electric vehicle power-on control method and pure electric vehicle |
| CN107031410B (en) * | 2017-04-07 | 2019-12-13 | 惠州市亿能电子有限公司 | Electric automobile pre-charging circuit and fault diagnosis method thereof |
| CN108819733B (en) * | 2018-05-04 | 2021-01-19 | 宁波吉利汽车研究开发有限公司 | Power-on control method and device of battery management system |
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