CN106080229B - Cell safety charging method, device and battery management system - Google Patents
Cell safety charging method, device and battery management system Download PDFInfo
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- CN106080229B CN106080229B CN201610405650.3A CN201610405650A CN106080229B CN 106080229 B CN106080229 B CN 106080229B CN 201610405650 A CN201610405650 A CN 201610405650A CN 106080229 B CN106080229 B CN 106080229B
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- controller
- master controller
- charging
- preset time
- voltage relay
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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
-
- 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]
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The embodiment of the invention discloses a kind of cell safety charging method, device and battery management systems.This method comprises: during the charging process, master controller judges whether to receive the message transmitted from controller within a preset time, if it is not, then confirmation is described from controller exception, and connected high-voltage relay is disconnected；Judge whether the message for receiving the master controller transmission within a preset time from controller, if it is not, then confirming that the master controller is abnormal, and disconnects connected high-voltage relay.The present invention is stopped charging flow, avoids the problem that over-charging of battery by master controller and the working condition from controller in monitoring charging process to disconnect controllable high-voltage relay in master controller or when from controller operation irregularity.
Description
Technical field
The present invention relates to pure electric automobile technical fields, and in particular to a kind of cell safety charging method, device and
Battery management system.
Background technique
Today's society faces the serious problems such as environmental pollution and fossil energy shortage, as cause these problems it is important because
There is an urgent need to change and innovate, pure electric automobile comes into being under background the automobile of one of element in this.Pure electric automobile is to transport
The advantages of noise is low in row, no exhaust emissions also becomes automobile industry future hair as the green traffic tool being concerned
One important directions of exhibition.Control system of the battery management system as management pure electric automobile battery, monitors and manages electricity
The use in pond directly affects battery life and using safe.
In the use process of pure electric vehicle, there is a large amount of over-charging of battery, causes case on fire, battery management system
The manager to unite as charging flow, ought to prevent the appearance of this phenomenon.Case on fire is overcharged by the way that analysis is a lot of, discovery is big
Part is to lead to not prevent caused by over-charging of battery as battery management system operation irregularity.
During realizing the embodiment of the present invention, inventor has found existing many battery management system control strategies
In, over-charging of battery is prevented only according to cell voltage；Scheme is simultaneously not perfect, it is difficult to guarantee the security row of charging.
Summary of the invention
It is an object of the invention to solve to occur controller of battery management system work in prior art recharge process
Abnormal, charging flow control is failed the problem of leading to over-charging of battery.
First aspect the invention proposes a kind of cell safety charging method, the battery by high-voltage relay with
Power drive system connection, the power drive system are connect with external charging equipment, and the charging method includes:
During the charging process, master controller judges whether to receive the report transmitted from controller within a preset time
Text if it is not, then confirmation is described from controller exception, and disconnects connected high-voltage relay；
Judge whether the message for receiving the master controller transmission within a preset time from controller, if it is not, then confirming
The master controller is abnormal, and disconnects connected high-voltage relay.
Optionally, the master controller judges whether to receive the message transmitted from controller within a preset time
Step specifically includes:
When during the charging process and the predetermined period time reaches, the master controller is to the message transmitted from controller
It is monitored；
Judge whether to receive the message transmitted from controller in the preset time in this period.
Optionally, described to judge whether to receive message that the master controller transmits within a preset time from controller
Step specifically includes:
When during the charging process and the predetermined period time reaches, the message that the master controller is transmitted from controller
It is monitored；
Judge whether the message that the master controller transmission is received in the preset time in this period.
Optionally, described to judge whether to receive the report transmitted from controller in the preset time in this period
The step of text specifically includes:
The master controller resetting is worth at the first time, and is judged by way of reverse countdown or countdown in current time
Whether value receives the message transmitted from controller before being greater than the second time value.
Optionally, from control as described in being received before current time value is greater than second time value such as the master controller
The message of device transmission processed, then confirmation is described normal from controller.
Optionally, before described the step of disconnecting connected high-voltage relay, this method further include:
Confirmation it is described from controller exception when, the master controller sends charge control instruction to the charging equipment,
So that the charging equipment is instructed according to the charge control reduces charging current value.
Optionally in described the step of disconnecting connected high-voltage relay specifically includes:
When the charging current is reduced to default safety value, the master controller disconnects connected high-voltage relay.
Optionally, described the step of disconnecting connected high-voltage relay, specifically includes:
When executing reduces charging current step preset time value, the master controller disconnects connected high-voltage relay
Device.
As shown from the above technical solution, the cell safety charging method that the embodiment of the present invention proposes passes through monitoring charging
Master controller and the working condition from controller in the process, it is controllable to disconnect in master controller or when from controller operation irregularity
High-voltage relay stops charging flow, avoids the problem that over-charging of battery.
Second aspect, the embodiment of the present invention also proposed a kind of cell safety charging process device, comprising: first judges mould
Block and the second judgment module；
The first judgment module receives the second judgment module transmission for judging whether within a preset time
Message if it is not, then confirming that second judgment module is abnormal, and disconnects connected high-voltage relay；
Second judgment module receives the first judgment module transmission for judging whether within a preset time
Message if it is not, then confirming that the first judgment module is abnormal, and disconnects connected high-voltage relay.
The third aspect, the embodiment of the present invention also proposed a kind of battery management system, at such as above-mentioned safe charging
Manage device.
As shown from the above technical solution, the cell safety charging process device of proposition of the embodiment of the present invention, battery management system
System by monitoring charging process in master controller and the working condition from controller, with master controller or from controller work it is different
Chang Shi disconnects controllable high-voltage relay, stops charging flow, avoids the problem that over-charging of battery.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 shows the partial structure diagram of the electric car of one embodiment of the invention proposition；
Fig. 2 shows the flow diagrams for the cell safety charging method that one embodiment of the invention proposes；
Fig. 3, which is shown, monitors master/slave work in the cell safety charging method of one embodiment of the invention proposition
Make the flow diagram of state；
Fig. 4 shows master control abnormality processing process in the cell safety charging method of one embodiment of the invention proposition and shows
It is intended to；
Fig. 5 is shown in the cell safety charging method of one embodiment of the invention proposition to be shown from control abnormality processing process
It is intended to；
Fig. 6 shows the flow diagram of the cell safety charging process device of one embodiment of the invention proposition.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 shows the partial structure diagram of the electric car of one embodiment of the invention proposition, participates in Fig. 1, this is electronic
Automobile includes battery management system BMS, power drive system and battery pack, wherein battery management system BMS includes: to pass through CAN
For (controller LAN) message with the BMS master controller and BMS that mutually monitor from controller, the battery passes through high-voltage relay
It is connect with power drive system, the power drive system is connect with external charging equipment, and BMS master controller and BMS divide from controller
At least one high-voltage relay is not connected；
Wherein, battery pack includes the first battery modules and the second battery modules.
Fig. 2 shows the flow diagrams for the cell safety charging method that one embodiment of the invention proposes, referring to figure
2, the charging method includes:
100, during the charging process, master controller, which judges whether to receive within a preset time, described transmits from controller
Message if it is not, then confirmation is described from controller exception, and disconnects connected high-voltage relay；
200, judge whether the message for receiving the master controller transmission within a preset time from controller, if it is not, then
Confirm that the master controller is abnormal, and disconnects connected high-voltage relay.
It should be noted that in entire charging process, master controller or do not supervised within a preset time from controller
The message for measuring other side's transmission, then confirm that other side is abnormal, and preset time herein is 5s, 10s, 1min etc..
In a possible embodiments, step 100 is specifically included:
When during the charging process and the predetermined period time reaches, the master controller is to the message transmitted from controller
It is monitored；
Judge whether to receive the message transmitted from controller in the preset time in this period.
Similar, step 200 specifically includes:
When during the charging process and the predetermined period time reaches, the message that the master controller is transmitted from controller
It is monitored；
Judge whether the message that the master controller transmission is received in the preset time in this period.
It should be noted that the present embodiment is provided at least one period during the charging process, when being started with each period
Preset time in whether monitor message be judgment basis；For example, using the integral point time as the period, preset time 10s, i.e., with
It powers on and starts to charge as initial time, every 5min, which is a cycle, is monitored master controller/from the message of controller, such as exists
Message is monitored in 10s when the period of a upper 5min starts, then illustrates that master/slave is normal.
In the present embodiment, judge whether to receive the report transmitted from controller in the preset time in this period
The step of text specifically includes:
The master controller resetting is worth at the first time, and is judged by way of reverse countdown or countdown in current time
Whether value receives the message transmitted from controller before being greater than the second time value.
It is passed as described in the master controller receives before current time value is greater than second time value from controller
Defeated message, then confirmation is described normal from controller.
With 5min for a period, 10s is that above-mentioned preset time is described in detail, and is reached in the monitoring period in this period
When, the timer of master controller will reset to 10s the time, and start to successively decrease, and such as then confirm in 0s there are no message is monitored
From controller operation irregularity.
On the contrary, such as monitoring message before 0s, then confirm working properly from controller.
In order to disconnect the problem of relay will cause relay bonding under the conditions of high current, disconnect connected high pressure after
Before the step of electric appliance, this method further include:
Confirmation it is described from controller exception when, the master controller sends charge control instruction to the charging equipment,
So that the charging equipment is instructed according to the charge control reduces charging current value.
Charging current step preset time value is reduced when the charging current is reduced to default safety value, or executing
When, the master controller disconnects connected high-voltage relay.
Fig. 3, which is shown, monitors master/slave work in the cell safety charging method of one embodiment of the invention proposition
The flow diagram for making state, referring to Fig. 3, wherein preset time 3s；
After charging flow starts, first monitoring period (control beat) starts, at this point, the master/slave control of battery management system
Device processed starts simultaneously at the CAN message for monitoring whether to receive from other side.It derives from if master controller receives from controller
CAN message, the timer inside program reset to 3s (the specific time depends on the circumstances), derive from if master controller does not receive
From the message of controller, the time of timer successively decreases, and when the time of timer being decremented to 0, determines from controller operation irregularity；
If receiving the CAN message from master controller from controller, the timer inside program resets to 3s, and (the specific time is optionally
Depending on), if not receiving the message from master controller from controller, the time of timer successively decreases, when the time of timer
When being decremented to 0, sentence master controller operation irregularity, then jump to master control abnormality processing and from control abnormality processing step.
If master/slave works normally in this monitoring period, next monitoring period is carried out.
Fig. 4 shows master control abnormality processing process in the cell safety charging method of one embodiment of the invention proposition and shows
It is intended to, referring to fig. 4, when from control operation irregularity, causes relay adhesion, master control to avoid disconnecting relay under the conditions of high current
Device processed reduce by the interaction with charging equipment the operation of charging current, and charging current drops to safety value 5A (specific number
Value depends on the circumstances) or reduce charging current operation execute 5s (the specific time depends on the circumstances) after, disconnect main controller controls
High tension loop relay.
Fig. 5 is shown in the cell safety charging method of one embodiment of the invention proposition to be shown from control abnormality processing process
It is intended to, referring to Fig. 5, due to cannot achieve the interaction with charging equipment from controller, works from monitoring control devices to master controller
After aberrant continuation 15s (the specific time depends on the circumstances), the high tension loop relay controlled from controller is directly disconnected.So far it fills
Electric high tension loop disconnects, and charging flow stops, and effectively avoids and overcharges.
For method implementation, for simple description, therefore, it is stated as a series of action combinations, but ability
Field technique personnel should be aware of, and embodiment of the present invention is not limited by the described action sequence, because according to the present invention
Embodiment, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art should also know that,
Embodiment described in this description belongs to preferred embodiment, related movement embodiment party not necessarily of the present invention
Necessary to formula.
Fig. 6 shows the flow diagram of the cell safety charging process device of one embodiment of the invention proposition, referring to figure
6, the cell safety charging process device, comprising: first judgment module 610 and the second judgment module 620；
The first judgment module 610, for judging whether that receiving second judgment module within a preset time passes
Defeated message if it is not, then confirming that second judgment module is abnormal, and disconnects connected high-voltage relay；
Second judgment module 620, for judging whether that receiving the first judgment module within a preset time passes
Defeated message if it is not, then confirming that the first judgment module is abnormal, and disconnects connected high-voltage relay.
Cell safety charging process device provided by the invention can after controller of battery management system operation irregularity, and
When, safety the controllable high tension loop relay of disconnection, stop charging flow, avoid the generation of over-charging of battery.
For device embodiments, since it is substantially similar to method implementation, so be described relatively simple,
Related place illustrates referring to the part of method implementation.
It should be noted that in all parts of the device of the invention, according to the function that it to be realized to therein
Component has carried out logical partitioning, and still, the present invention is not only restricted to this, can according to need all parts are repartitioned or
Person's combination.
Based on identical innovation and creation, the invention also provides a kind of battery management systems, fill including such as above-mentioned safety
Electric treatment device.
All parts embodiment of the invention can be implemented in hardware, or to transport on one or more processors
Capable software module is realized, or is implemented in a combination thereof.In the present apparatus, PC is by realizing internet to equipment or device
Long-range control, the step of accurately controlling equipment or device each operation.The present invention is also implemented as executing here
Some or all device or device programs of described method are (for example, computer program and computer program produce
Product).Program of the invention, which is achieved, can store on a computer-readable medium, and the file or document tool that program generates
There is statistics available property, generate data report and cpk report etc., batch testing can be carried out to power amplifier and counts.On it should be noted that
Stating embodiment, illustrate the present invention rather than limit it, and those skilled in the art are not departing from
It can be designed replacement embodiment in the case where attached the scope of the claims.It in the claims, should not will be between bracket
Any reference symbol be configured to limitations on claims.Word "comprising" does not exclude the presence of member not listed in the claims
Part or step.Word "a" or "an" located in front of the element does not exclude the presence of multiple such elements.The present invention can borrow
Help include the hardware of several different elements and be realized by means of properly programmed computer.If listing equipment for drying
Unit claim in, several in these devices, which can be, to be embodied by the same item of hardware.Word first,
Second and the use of third etc. do not indicate any sequence.These words can be construed to title.
Although the embodiments of the invention are described in conjunction with the attached drawings, but those skilled in the art can not depart from this hair
Various modifications and variations are made in the case where bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. a kind of cell safety charging method, the battery is connect by high-voltage relay with power drive system, the electricity
Drive system is connect with external charging equipment, which is characterized in that the charging method includes:
During the charging process, master controller judges whether to receive the message transmitted from controller within a preset time, if it is not, then
Confirmation is described from controller exception, and disconnects connected high-voltage relay；
Judge whether the message for receiving the master controller transmission within a preset time from controller, if it is not, then described in confirmation
Master controller is abnormal, and disconnects connected high-voltage relay.
2. the method according to claim 1, wherein the master controller judges whether to receive within a preset time
It is specifically included to the step of message transmitted from controller:
When during the charging process and the predetermined period time reaches, the master controller carries out the message transmitted from controller
Monitoring；
Judge whether to receive the message transmitted from controller in the preset time in this period.
3. the method according to claim 1, wherein described judge whether to receive within a preset time from controller
To the master controller transmit message the step of specifically include:
It is described that the message that the master controller transmits is carried out from controller when during the charging process and the predetermined period time reaches
Monitoring；
Judge whether the message that the master controller transmission is received in the preset time in this period.
4. according to the method described in claim 2, it is characterized in that, described judge whether in the preset time in this period
The step of receiving the message transmitted from controller specifically includes:
Master controller resetting is worth at the first time, and is judged by way of reverse countdown or countdown big in current time value
The message transmitted from controller whether is received before the second time value.
5. according to the method described in claim 4, it is characterized in that, as the master controller in current time value is greater than described the
The message transmitted from controller is received before two time values, then confirmation is described normal from controller.
6. method according to claim 1-5, which is characterized in that disconnect connected high-voltage relay described
The step of before, this method further include:
Confirmation it is described from controller exception when, the master controller sends charge control instruction to the charging equipment so that
The charging equipment is instructed according to the charge control reduces charging current value.
7. according to the method described in claim 6, it is characterized in that, described the step of disconnecting connected high-voltage relay it is specific
Include:
When the charging current is reduced to default safety value, the master controller disconnects connected high-voltage relay.
8. according to the method described in claim 6, it is characterized in that, described the step of disconnecting connected high-voltage relay it is specific
Include:
When executing reduces charging current step preset time value, the master controller disconnects connected high-voltage relay.
9. a kind of cell safety charging process device characterized by comprising first judgment module and the second judgment module；
The first judgment module, the report for judging whether to receive the second judgment module transmission within a preset time
Text if it is not, then confirming that second judgment module is abnormal, and disconnects connected high-voltage relay；
Second judgment module, the report for judging whether to receive the first judgment module transmission within a preset time
Text if it is not, then confirming that the first judgment module is abnormal, and disconnects connected high-voltage relay.
10. a kind of battery management system, which is characterized in that including safe charging processing unit as claimed in claim 9.
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| CN201610405650.3A CN106080229B (en) | 2016-06-08 | 2016-06-08 | Cell safety charging method, device and battery management system |
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| CN201610405650.3A CN106080229B (en) | 2016-06-08 | 2016-06-08 | Cell safety charging method, device and battery management system |
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| CN106114227B (en) * | 2016-06-30 | 2018-11-23 | 简式国际汽车设计（北京）有限公司 | Power battery fault protecting method, device and power battery |
| KR101907373B1 (en) * | 2016-11-16 | 2018-10-12 | 현대오트론 주식회사 | Apparatus and method for preventing over-charging |
| KR102344211B1 (en) | 2017-12-20 | 2021-12-27 | 주식회사 엘지에너지솔루션 | System and method for diagnosing main controller abnormal operation |
| CN114043873B (en) * | 2021-10-14 | 2023-07-25 | 东风柳州汽车有限公司 | High-voltage relay monitoring method, device, equipment and storage medium |
| WO2023206483A1 (en) * | 2022-04-29 | 2023-11-02 | 时代电服科技有限公司 | Battery management method, battery management unit, and electric device |
| CN115220489B (en) * | 2022-07-12 | 2024-04-12 | 江苏时代新能源科技有限公司 | Baking system and control method and device thereof |
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| JP2000123821A (en) * | 1998-10-09 | 2000-04-28 | Nikkiso Co Ltd | Abnormality detection and cutoff gear for nonaqueous electrolyte secondary battery |
| JP2001185236A (en) * | 1999-10-15 | 2001-07-06 | Mitsubishi Materials Corp | Display device for charged state and charged amount |
| JP2006340450A (en) * | 2005-05-31 | 2006-12-14 | Mitsumi Electric Co Ltd | Battery protective circuit |
| JP6135823B2 (en) * | 2014-04-08 | 2017-05-31 | 株式会社豊田自動織機 | Battery monitoring device |
| CN204928277U (en) * | 2015-09-10 | 2015-12-30 | 桂林电子科技大学 | Intelligent charging system for power battery |
| CN105539156B (en) * | 2015-12-15 | 2018-03-27 | 北汽福田汽车股份有限公司 | High-voltage control circuit, method and automobile |
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