CN115107522A - Method and system for identifying abnormal charging of battery pack - Google Patents
Method and system for identifying abnormal charging of battery pack Download PDFInfo
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- CN115107522A CN115107522A CN202210899891.3A CN202210899891A CN115107522A CN 115107522 A CN115107522 A CN 115107522A CN 202210899891 A CN202210899891 A CN 202210899891A CN 115107522 A CN115107522 A CN 115107522A
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims description 32
- 238000007599 discharging Methods 0.000 claims description 5
- 238000013500 data storage Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000007726 management method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
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Classifications
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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
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of battery pack monitoring, in particular to a system for identifying abnormal charging of a battery pack, which comprises an information acquisition module, a working mode judgment module, an abnormal charging identification module, an abnormal charging processing module and a signal output module, wherein the information acquisition module is electrically connected to the working mode judgment module, the working mode judgment module is electrically connected to the abnormal charging identification module, the abnormal charging identification module is electrically connected to the abnormal charging processing module, and the abnormal charging processing module is electrically connected to the signal output module. The invention is mainly used for the battery management system to identify the charging state of the battery pack under all working conditions, analyze the charging state, find the abnormal charging state, take treatment measures in time to finish the abnormal charging, ensure the performance of the battery pack and prevent the sending safety accidents.
Description
Technical Field
The invention relates to the technical field of battery pack monitoring, in particular to a method and a system for identifying abnormal charging of a battery pack.
Background
The battery package is as electric automobile electric energy storage device, has high-pressure characteristic, needs the professional to operate according to the standard flow to the operation of battery package, if the misoperation then harm the battery performance, can cause the incident when serious, burns out the battery package, causes personnel's loss of property even. And a plurality of accidents of the battery pack occur in the charging process, the abnormal charging state of the battery pack is identified in time, and the accidents can be effectively reduced.
The existing battery management system monitors the charging state of the battery pack on the premise that the battery pack enters a normal charging process, and when the battery is charged in an abnormal process, for example, the battery pack is charged by a discharge port, the battery pack cannot be identified in time, so that the battery management system cannot take treatment measures in time.
Disclosure of Invention
The invention aims to solve the problem that in the prior art, when a battery is charged in an abnormal flow, the battery cannot be identified in time, and provides a method and a system for identifying abnormal charging of a battery pack.
In order to achieve the purpose, the invention adopts the following technical scheme:
a system for identifying abnormal charging of a battery pack is designed, which comprises an information acquisition module, a working mode judgment module, an abnormal charging identification module, an abnormal charging processing module and a signal output module, wherein the information acquisition module is used for acquiring input signals of the battery pack, the information acquisition module is electrically connected with the working mode judgment module, the working mode judgment module judges the current working mode of the battery pack according to the acquired signals, the working mode judging module is electrically connected with the abnormal charging recognition module which is used for recognizing the abnormal charging state in the normal discharging mode, and the abnormal charging identification module is electrically connected to the abnormal charging processing module, the abnormal charging processing module is used for taking processing measures to ensure the safety of the battery when the abnormal charging state is effective, and the abnormal charging processing module is electrically connected to the signal output module.
Preferably, the charging system further comprises a data storage module, and the data storage module is electrically connected to the signal output module and used for storing the abnormal charging state.
The invention also provides a method for identifying abnormal charging of the battery pack, which comprises the following specific steps:
s1, acquiring a BMS awakening signal;
s2, judging whether the charging signal is effective or not, and as follows:
step 1, if the charging signal is valid, the BMS enters a normal charging mode;
step 2, if the charging signal is invalid, acquiring whether the key signal is valid;
step 3, if the key signal is invalid, the wake-up signal is acquired again to judge the working mode;
and 4, if the key signal is valid, the BMS enters a normal discharging mode.
Preferably, the method further comprises: reading BMS storage data and judging whether the stored abnormal charging state is effective or not;
if the stored abnormal charging state is effective, the power-on is forbidden and the abnormal charging state is reported;
and if the stored abnormal charging state is invalid, controlling the battery pack to be electrified and closing the relay.
Preferably, the method further includes determining whether the acquired bus current is greater than a charging current set value 1, as follows:
(1) if the bus current is not greater than the charging current set value 1, the bus current is obtained again;
(2) and if the bus current is larger than the set charging current value 1, integrating the bus current and calculating the charging capacity.
Preferably, the method further includes determining whether the bus current is less than the set charging current value 2, as follows:
if the bus current is less than the set value 2 of the charging current, clearing the integral charging capacity;
if the bus current is not less than the charging current set value 2, judging that the charging capacity is greater than the capacity set value;
if the capacity set value is not greater than the capacity set value, the bus current is continuously obtained;
if the capacity set value is greater than the capacity set value, the abnormal charge state is valid.
Preferably, the method further comprises controlling the battery pack to be powered off and opening the relay.
Preferably, the method further comprises controlling a buzzer to alarm.
Preferably, the method further comprises storing the abnormal state of charge.
The system for identifying the abnormal charging of the battery pack has the advantages that: the invention is mainly used for the battery management system to identify the charging state of the battery pack under all working conditions, analyze the charging state, find the abnormal charging state, take treatment measures in time to finish the abnormal charging, ensure the performance of the battery pack and prevent the sending safety accidents.
Drawings
Fig. 1 is a block diagram of a system for identifying abnormal charging of a battery pack according to the present invention.
Fig. 2 is a flowchart of a method for identifying abnormal charging of a battery pack according to the present invention.
Detailed Description
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.
Example 1
Referring to fig. 1, a system for identifying abnormal charging of a battery pack includes an information collecting module, a working mode determining module, an abnormal charging identifying module, an abnormal charging processing module, and a signal output module, wherein the information collecting module is used for collecting input signals of the battery pack, such as a bus current of the battery, a key signal, and a charging signal, and is electrically connected to the working mode determining module, the working mode determining module determines a current working mode of the battery pack, such as a normal charging mode and a normal discharging mode, according to the collected signals, and is electrically connected to the abnormal charging identifying module, the abnormal charging identifying module is used for identifying an abnormal charging state in the normal discharging mode, and is electrically connected to the abnormal charging processing module, and the abnormal charging processing module is used for taking processing measures to ensure the safety of the battery when the abnormal charging state is valid, the abnormal charging processing module is electrically connected to the signal output module; the data storage module is electrically connected to the signal output module and used for storing the abnormal charging state.
Example 2
Referring to fig. 2, the invention provides a method for identifying abnormal charging of a battery pack, which comprises the following specific steps:
s1, acquiring a BMS awakening signal;
s2, whether the charging signal is effective is obtained, and the method comprises the following steps:
step 1, if the charging signal is valid, the BMS enters a normal charging mode;
step 2, if the charging signal is invalid, acquiring whether the key signal is valid;
step 3, if the key signal is invalid, the wake-up signal is acquired again to judge the working mode;
and 4, if the key signal is valid, the BMS enters a normal discharge mode.
The method further comprises the following steps: reading BMS storage data and judging whether the stored abnormal charging state is effective or not;
if the stored abnormal charging state is effective, the power-on is forbidden and the abnormal charging state is reported;
and if the stored abnormal charging state is invalid, controlling the battery pack to be electrified and closing the relay.
The method also comprises the step of judging whether the acquired bus current is greater than a charging current set value 1 or not, and comprises the following steps:
(1) if the bus current is not greater than the charging current set value 1, the bus current is obtained again;
(2) and if the bus current is larger than the set charging current value 1, integrating the bus current and calculating the charging capacity.
The method also comprises the step of judging whether the bus current is smaller than the set charging current value 2 or not, and the method comprises the following steps:
if the bus current is less than the set value 2 of the charging current, resetting the integral charging capacity;
if the bus current is not less than the charging current set value 2, judging that the charging capacity is greater than the capacity set value;
if the capacity set value is not greater than the capacity set value, the bus current is continuously obtained;
if the capacity set value is greater than the capacity set value, the abnormal charge state is valid.
The method also comprises the steps of controlling the battery pack to be powered off and disconnecting the relay; the method also comprises controlling a buzzer to alarm; the method also includes storing the abnormal state of charge.
According to the method, 1, the abnormal charging state of the battery pack can be identified through monitoring the state of the battery pack, and processing measures are taken in time to protect the safety of the battery and the safety of the life and property.
2. Through the judgment of the historical storage data, the battery pack is prevented from working in an abnormal charging state again, and an operation error of an operator is reminded, so that the operation flow of the operator is standardized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a system for discernment battery package charges unusually, its characterized in that, includes information acquisition module, mode of operation judgement module, unusual charging identification module, unusual charge processing module, signal output module, information acquisition module electric connection is on mode of operation judgement module, mode of operation judgement module electric connection is on unusual charge identification module, just unusual charge identification module electric connection is on unusual charge processing module, unusual charge processing module electric connection is on signal output module.
2. The system for identifying abnormal charging of a battery pack according to claim 1, further comprising a data storage module electrically connected to the signal output module for storing the abnormal charging state.
3. The method for identifying the abnormal charging of the battery pack according to claim 2, comprising the following specific steps:
s1, acquiring a BMS awakening signal;
s2, judging whether the charging signal is effective or not, and as follows:
step 1, if the charging signal is valid, the BMS enters a normal charging mode;
step 2, if the charging signal is invalid, acquiring whether the key signal is valid;
step 3, if the key signal is invalid, the wake-up signal is acquired again to judge the working mode;
and 4, if the key signal is valid, the BMS enters a normal discharging mode.
4. The method of claim 3, further comprising: reading BMS storage data and judging whether the stored abnormal charging state is effective or not;
if the stored abnormal charging state is effective, the power-on is forbidden and the abnormal charging state is reported;
and if the stored abnormal charging state is invalid, controlling the battery pack to be electrified and closing the relay.
5. The method for identifying the abnormal charging of the battery pack according to claim 4, further comprising determining whether the acquired bus current is greater than a set charging current value 1, as follows:
(1) if the bus current is not greater than the charging current set value 1, the bus current is obtained again;
(2) and if the bus current is larger than the set charging current value 1, integrating the bus current and calculating the charging capacity.
6. The method for identifying abnormal charging of a battery pack according to claim 5, further comprising determining whether the bus current is less than the set charging current value 2 as follows:
if the bus current is less than the set value 2 of the charging current, clearing the integral charging capacity;
if the bus current is not less than the charging current set value 2, judging that the charging capacity is greater than the capacity set value;
if the capacity set value is not greater than the capacity set value, the bus current is continuously obtained;
if the capacity set value is greater than the capacity set value, the abnormal charge state is valid.
7. The method for identifying abnormal charging of a battery pack according to claim 6, further comprising controlling the battery pack to be powered down and opening the relay.
8. The method for identifying abnormal charging of a battery pack according to claim 7, further comprising controlling a buzzer alarm.
9. The method of identifying abnormal charging of a battery pack according to claim 8, further comprising storing an abnormal state of charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210899891.3A CN115107522B (en) | 2022-07-28 | Method and system for identifying abnormal charge of battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210899891.3A CN115107522B (en) | 2022-07-28 | Method and system for identifying abnormal charge of battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115107522A true CN115107522A (en) | 2022-09-27 |
| CN115107522B CN115107522B (en) | 2024-07-23 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425678A (en) * | 2007-10-30 | 2009-05-06 | 比亚迪股份有限公司 | Battery protection method and system |
| CN205668502U (en) * | 2016-06-08 | 2016-11-02 | 西安特锐德智能充电科技有限公司 | The device that battery charging is abnormal is judged according to the change of battery characteristics value |
| CN110758173A (en) * | 2019-10-25 | 2020-02-07 | 广东维可特科技有限公司 | Control method and device of charging and discharging detection system and storage medium |
| JP2020120445A (en) * | 2019-01-21 | 2020-08-06 | トヨタ自動車株式会社 | vehicle |
| CN112319296A (en) * | 2020-10-13 | 2021-02-05 | 武汉蔚来能源有限公司 | Charging protection method and system and rechargeable battery |
| CN113276720A (en) * | 2021-05-08 | 2021-08-20 | 国网电动汽车服务有限公司 | BMS message monitoring-based electric vehicle safe charging system and method |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425678A (en) * | 2007-10-30 | 2009-05-06 | 比亚迪股份有限公司 | Battery protection method and system |
| CN205668502U (en) * | 2016-06-08 | 2016-11-02 | 西安特锐德智能充电科技有限公司 | The device that battery charging is abnormal is judged according to the change of battery characteristics value |
| JP2020120445A (en) * | 2019-01-21 | 2020-08-06 | トヨタ自動車株式会社 | vehicle |
| CN110758173A (en) * | 2019-10-25 | 2020-02-07 | 广东维可特科技有限公司 | Control method and device of charging and discharging detection system and storage medium |
| CN112319296A (en) * | 2020-10-13 | 2021-02-05 | 武汉蔚来能源有限公司 | Charging protection method and system and rechargeable battery |
| CN113276720A (en) * | 2021-05-08 | 2021-08-20 | 国网电动汽车服务有限公司 | BMS message monitoring-based electric vehicle safe charging system and method |
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