CN110015139A - On-vehicle battery control system, method and vehicle - Google Patents
On-vehicle battery control system, method and vehicle Download PDFInfo
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- CN110015139A CN110015139A CN201711160555.2A CN201711160555A CN110015139A CN 110015139 A CN110015139 A CN 110015139A CN 201711160555 A CN201711160555 A CN 201711160555A CN 110015139 A CN110015139 A CN 110015139A
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- electrolyte
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- single battery
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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
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
This disclosure relates to a kind of on-vehicle battery control system, method and vehicle, which includes: electrolyte balance device, power battery pack and the pipeline for connecting electrolyte balance device and power battery pack；Electrolyte fluid reservoir in electrolyte balance device is connected to by the solenoid valve and connecting pipe of electrolyte balance device with each single battery in power battery pack；When power battery pack is there are when the abnormal single battery of electrolyte exception, the electrolyte in electrolyte fluid reservoir is injected abnormal single battery by control solenoid valve and pump.Therefore, it can accurately solve the problems, such as electrolyte exception according to the state of single single battery, improve the service life of on-vehicle battery, reduce operating cost.
Description
Technical field
This disclosure relates to, and in particular, to a kind of on-vehicle battery control system, method and vehicle.
Background technique
The onboard power lithium battery of electric vehicle generally comprises shell and the battery core positioned at enclosure interior, wherein in battery core
The component parts such as anode, cathode, electrolyte, orderly is encapsulated in shell.And electrolyte accounts for the 5%-20% of battery core.It is using
In the process, it is gradually used up since side reaction occurs between electrolyte meeting and anode and cathode, so as to cause lithium battery cyclicity
The deterioration of energy.Onboard power lithium battery pack contains multiple single batteries, by forming battery pack in series and parallel, and different single batteries
There are the differences of performance between individual.
In the prior art, the filling for carrying out electrolyte to each single battery according to fixed reservoir quantity, will lead to part
Single battery loop attenuation is than more serious, the case where poor single battery of individual performance will appear serious super-charge super-discharge, from
And entire battery performance is caused sharply to deteriorate.
Summary of the invention
Purpose of this disclosure is to provide a kind of on-vehicle battery control system, method and vehicles, can overcome based on fixed
The problem of entire battery performance caused by the performance difference of reservoir quantity and single battery deteriorates.
To achieve the goals above, according to the first aspect of the embodiments of the present disclosure, a kind of on-vehicle battery control system is provided,
It include: electrolyte balance device, power battery pack and for connecting the electrolyte balance device and the power battery pack
Pipeline；
The electrolyte balance device includes central processing unit, electrolyte fluid reservoir, solenoid valve and pump；
The electrolyte fluid reservoir passes through each list in the solenoid valve and connecting pipe and the power battery pack
Body cell communication；
The central processing unit is used to control when the power battery pack is there are when the abnormal single battery of electrolyte exception
The solenoid valve and the pump are made, by the electrolyte injection abnormal single battery in the electrolyte fluid reservoir.
Optionally, the corresponding solenoid valve of each single battery in the power battery pack, each solenoid valve packet
Exhaust solenoid valve and fluid injection solenoid valve are included, the pump includes aspiration pump and topping-up pump；
The aspiration pump is used for after the central processing unit opens the exhaust solenoid valve, to the abnormal monomer electricity
Pond is evacuated；
The topping-up pump is used to reach the lower limit threshold of preset suction pressure when the suction pressure of the abnormal single battery
After value and the exhaust solenoid valve are closed, the fluid injection solenoid valve is opened, filling electrolyte is carried out to the abnormal single battery；
The central processing unit is also used to reach preset liquid filling pressure when the liquid filling pressure of the abnormal single battery
Upper limit threshold, or when the reservoir quantity of the abnormal single battery reaches preset fluid injection threshold value, close the topping-up pump and
The fluid injection solenoid valve.
Optionally, the exhaust solenoid valve and the fluid injection solenoid valve are check valve.
Optionally, the central processing unit is connected by the battery management system of CAN bus and vehicle, for receiving
Stating the abnormal single battery that is used to notify that battery management system is sent, there are the exception informations of electrolyte abnormal conditions；
Wherein, the exception information is that the battery management system is determined according to the state-of-charge of the abnormal single battery
's.
According to the second aspect of an embodiment of the present disclosure, a kind of on-vehicle battery control method is provided, on-vehicle battery control is applied to
System processed, on-vehicle battery control system include: electrolyte balance device, power battery pack and flat for connecting the electrolyte
The pipeline of each single battery in device and the power battery pack of weighing, the electrolyte balance device includes central processing list
Member, electrolyte fluid reservoir, solenoid valve and pump；The on-vehicle battery control method includes:
When occurring the abnormal single battery of electrolyte exception in the power battery pack, the solenoid valve and institute are controlled
Pump is stated, the electrolyte fluid reservoir is connected to the abnormal single battery；
After the electrolyte fluid reservoir is connected to the abnormal single battery, by the electrolysis in the electrolyte fluid reservoir
The liquid injection abnormal single battery.
Optionally, the corresponding solenoid valve of each single battery in the power battery pack, each solenoid valve packet
Exhaust solenoid valve and fluid injection solenoid valve are included, the pump includes aspiration pump and topping-up pump；
It is described when the power battery pack there are when the abnormal single battery of electrolyte exception, control the solenoid valve and
The electrolyte fluid reservoir is connected to by the pump with the abnormal single battery, comprising:
It when the central processing unit receives the exception information, controls the exhaust solenoid valve and opens, using described
Aspiration pump is evacuated the abnormal single battery；
When the suction pressure of the abnormal single battery reaches the lower threshold of preset suction pressure, the centre
It manages unit and controls the exhaust solenoid valve closing, the fluid injection solenoid valve is opened；
The electrolyte injection abnormal single battery by the electrolyte fluid reservoir, comprising:
After the fluid injection solenoid valve is opened, topping-up pump described in the central processing unit controls is opened, to the exception
Single battery carries out filling electrolyte；
When the liquid filling pressure of the abnormal single battery reaches the upper limit threshold of preset liquid filling pressure, or when described different
When the reservoir quantity of normal single battery reaches preset fluid injection threshold value, topping-up pump and the note described in the central processing unit controls
Liquid electromagnetic valve is closed.
Optionally, the exhaust solenoid valve and the fluid injection solenoid valve are check valve.
Optionally, the central processing unit is connected by the battery management system of CAN bus and vehicle, for receiving
Stating the abnormal single battery that is used to notify that battery management system is sent, there are the exception informations of electrolyte abnormal conditions；
Wherein, the exception information is that the battery management system is determined according to the state-of-charge of the abnormal single battery
's.
According to the third aspect of an embodiment of the present disclosure, a kind of vehicle is provided, the vehicle includes vehicle described in first aspect
Carry battery control system.
On-vehicle battery control system, method and the vehicle that the disclosure provides, including electrolyte balance device, power battery pack
And the pipeline for connecting the electrolyte balance device and the power battery pack, by by the electrolyte balance device
In electrolyte fluid reservoir by the solenoid valve of electrolyte balance device and connecting pipe with it is each in the power battery pack
A single battery connection, to control the electricity when the power battery pack is there are when the abnormal single battery of electrolyte exception
Magnet valve and the pump, by the electrolyte injection abnormal single battery in the electrolyte fluid reservoir.It can be according to single
The state of single battery accurately solves the problems, such as electrolyte exception, improves the service life of on-vehicle battery, reduces operating cost.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Description of symbols
10 on-vehicle battery control systems
1 electrolyte balance device
2 power battery packs
101 central processing unit
102 electrolyte fluid reservoirs
103 solenoid valves
1031 exhaust solenoid valves
1032 fluid injection solenoid valves
104 pumps
1041 aspiration pumps
1042 topping-up pumps
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of block diagram of on-vehicle battery control system shown according to an exemplary embodiment；
Fig. 2 is a kind of structural schematic diagram of on-vehicle battery control system shown according to an exemplary embodiment；
Fig. 3 is a kind of flow chart of on-vehicle battery control method shown according to an exemplary embodiment；
Fig. 4 is a kind of flow chart of on-vehicle battery control method shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Fig. 1 is a kind of block diagram of on-vehicle battery control system shown according to an exemplary embodiment, as shown in Figure 1, should
On-vehicle battery control system 10 includes: electrolyte balance device 1, power battery pack 2 and for connecting electrolyte balance device 1
With the pipeline of power battery pack 2.
Wherein, electrolyte balance device 1 include central processing unit 101, electrolyte fluid reservoir 102, solenoid valve 103 and
Pump 104.
Electrolyte fluid reservoir 102 passes through each single battery in solenoid valve 103 and connecting pipe and power battery pack 2
Connection.
Central processing unit 101 is used for when power battery pack 2 is there are when the abnormal single battery of electrolyte exception, and control is electric
Electrolyte in electrolyte fluid reservoir 102 is injected abnormal single battery by magnet valve 103 and pump 104.
Illustratively, central processing unit 101 can pass through CAN (Chinese: controller local area network；English: Controller
Area Network) bus and vehicle battery management system (English: Battery Management System, referred to as:
BMS) lotus root connects, for receive battery management system transmission for notifying abnormal single battery that there are the different of electrolyte abnormal conditions
Normal information, such as the CAN message in CAN bus can be sent to by BMS to obtain the exception information.
Wherein, exception information is that battery management system is determined according to the state-of-charge of abnormal single battery.For example, BMS
The information such as vehicle-mounted battery charge current value, on-vehicle battery temperature, charging on-vehicle battery voltage can be acquired in real time, and then to working as
Preceding SOC (English: State of charge, Chinese: state-of-charge) estimated, thus judge be in power battery pack 2
No there are some single battery charging exceptions, and the judging result are published in CAN network with CAN message, electrolyte balance
Central processing unit 101 in device 1 receives the CAN message that BMS is sent, some single battery charging detected according to BMS is held
Whether amount is abnormal, carries out subsequent control.
It illustratively, can be initially to the process of 2 fluid injection of power battery pack since there are electrolyte balance devices 1
In need not inject excessive electrolyte, such as carried out in the initial injection process to power battery pack 2 with preset ratio
The filling of electrolyte, which can be a relatively low ratio, such as 20%, therefore power battery pack 2 is being run
Initial stage need not carry excessive electrolyte.And the reservoir quantity of electrolyte is directly related with the safety of power battery, for example, when dynamic
The initial reservoir quantity of battery core of each single battery of power battery pack 2 is only the 20% of battery powered by conventional energy hereinafter, can be avoided dynamic
Power battery pack 2 may cause ground safety problem under abuse conditions.
Also, electrolyte balance device 1 can be according to the battery core state of each single battery in power battery pack 2 to electrolysis
Liquid is distributed according to need, to guarantee that the entire cycle life of power battery pack 2 is not influenced by single battery.
In conclusion the on-vehicle battery control system that the disclosure provides, including power battery pack and described for connecting
The pipeline of electrolyte balance device and the power battery pack, by the way that electrolyte fluid reservoir is passed through solenoid valve and connecting pipe
It is connected to each single battery in power battery pack, thus when there are the abnormal single batteries of electrolyte exception for power battery pack
When, solenoid valve and the pump are controlled, the electrolyte in electrolyte fluid reservoir is injected into abnormal single battery.Therefore, Neng Gougen
It is precisely corresponding to solve the problems, such as electrolyte exception according to the state of single single battery, it improves the service life of on-vehicle battery, reduces fortune
Row cost.
Fig. 2 is a kind of structural schematic diagram of on-vehicle battery control system shown according to an exemplary embodiment, such as Fig. 2 institute
Show, the corresponding solenoid valve 103 of each single battery in power battery pack 2 described in Fig. 1, each solenoid valve 103 includes row
Pneumoelectric magnet valve 1031 and fluid injection solenoid valve 1032, pump 104 include aspiration pump 1041 and topping-up pump 1042.
Wherein, aspiration pump 1041 is used for after central processing unit 101 opens exhaust solenoid valve 1031, to abnormal monomer electricity
Pond is evacuated.Exemplary, which can be Micropump, and topping-up pump 1042 can be Micropump or peristaltic pump.
Topping-up pump 1042 be used for when the suction pressure of abnormal single battery reach the lower threshold of preset suction pressure and
After exhaust solenoid valve 1031 is closed, fluid injection solenoid valve 1032 is opened, filling electrolyte is carried out to abnormal single battery.Suction pressure
Refer to the pressure when being evacuated to abnormal single battery, in abnormal single battery.
Central processing unit 101 is also used to reach the upper limit of preset liquid filling pressure when the liquid filling pressure of abnormal single battery
When threshold value, or when the reservoir quantity of abnormal single battery reaches preset fluid injection threshold value, topping-up pump 1042 and fluid injection electromagnetism are closed
Valve 1032.Liquid filling pressure refers to the pressure when carrying out fluid injection to abnormal single battery, in abnormal single battery；Or it can be with
One specified fluid injection threshold value is set, when reaching fluid injection threshold value to abnormal single battery progress filling liquid, closes topping-up pump
1042 and fluid injection solenoid valve 1032.
Wherein, exhaust solenoid valve 1031 and fluid injection solenoid valve 1032 are check valve.
Illustratively, when central processing unit 101 is received there are when the exception information of electrolyte exception, control is vented first
Solenoid valve 1031 is opened, and is evacuated by 1041 pairs of aspiration pump abnormal single batteries, when the suction pressure of abnormal single battery
When reaching the lower threshold of preset suction pressure, central processing unit 101 controls exhaust solenoid valve 1031 and closes, by fluid injection electricity
Magnet valve 1032 is opened, and is ready for carrying out fluid injection to abnormal single battery.After fluid injection solenoid valve 1032 is opened, then by topping-up pump
1042 open, to carry out filling electrolyte to abnormal single battery, when the liquid filling pressure of abnormal single battery reaches preset
When the upper limit threshold or reservoir quantity of liquid filling pressure reach preset fluid injection threshold value, the exception single battery is infused in stopping
Liquid, central processing unit 101 controls topping-up pump 1042 and fluid injection solenoid valve 1032 is closed, and completes entire fluid injection process.
In conclusion the on-vehicle battery control system that the disclosure provides, including power battery pack and described for connecting
The pipeline of electrolyte balance device and the power battery pack, by the way that electrolyte fluid reservoir is passed through solenoid valve and connecting pipe
It is connected to each single battery in power battery pack, thus when there are the abnormal single batteries of electrolyte exception for power battery pack
When, solenoid valve and the pump are controlled, the electrolyte in electrolyte fluid reservoir is injected into abnormal single battery.Therefore, Neng Gougen
It is precisely corresponding to solve the problems, such as electrolyte exception according to the state of single single battery, it improves the service life of on-vehicle battery, reduces fortune
Row cost.
Fig. 3 is a kind of flow chart of on-vehicle battery control method shown according to an exemplary embodiment, as shown in figure 3,
This method is applied to on-vehicle battery control system shown in fig. 1 or fig. 2, and this method may comprise steps of:
Step 301, when occurring the abnormal single battery of electrolyte exception in power battery pack, control solenoid valve and
Electrolyte fluid reservoir is connected to by pump with abnormal single battery.
Step 302, after electrolyte fluid reservoir is connected to abnormal single battery, the electrolyte in electrolyte fluid reservoir is infused
Enter abnormal single battery.
Fig. 4 is a kind of flow chart of on-vehicle battery control method shown according to an exemplary embodiment, as shown in figure 4,
Described in step 301 when occurring the abnormal single battery of electrolyte exception in power battery pack, solenoid valve and pump are controlled, it will
Electrolyte fluid reservoir is connected to abnormal single battery, comprising the following steps:
Step 3011, when central processing unit is received there are when the exception information of electrolyte exception, control is vented electromagnetism
Valve is opened, and is evacuated using aspiration pump to abnormal single battery.
Step 3012, when the suction pressure of abnormal single battery reaches the lower threshold of preset suction pressure, center
Processing unit controls exhaust solenoid valve and closes, and fluid injection solenoid valve is opened.
It wherein, will be in electrolyte fluid reservoir described in step 302 after electrolyte fluid reservoir is connected to abnormal single battery
Electrolyte inject abnormal single battery, may comprise steps of:
Step 3021, after fluid injection solenoid valve is opened, central processing unit controls topping-up pump is opened, to abnormal single battery
Carry out filling electrolyte.
Step 3022, when the liquid filling pressure of abnormal single battery reaches the upper limit threshold of preset liquid filling pressure, or work as
When the reservoir quantity of abnormal single battery reaches preset fluid injection threshold value, central processing unit controls topping-up pump and fluid injection solenoid valve are closed
It closes.
Illustratively, exhaust solenoid valve and fluid injection solenoid valve are check valve.
Wherein, central processing unit is connected by the battery management system of CAN bus and vehicle, for receiving battery management
What system was sent is used to notify abnormal single battery there are the exception information of electrolyte abnormal conditions, which is cell tube
Reason system is determined according to the state-of-charge of abnormal single battery.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (9)
1. a kind of on-vehicle battery control system characterized by comprising electrolyte balance device (1), power battery pack (2) with
And the pipeline for connecting the electrolyte balance device (1) and the power battery pack (2)；
The electrolyte balance device (1) includes central processing unit (101), electrolyte fluid reservoir (102), solenoid valve (103)
And pump (104)；
The electrolyte fluid reservoir (102) passes through in the solenoid valve (103) and connecting pipe and the power battery pack (2)
Each single battery connection；
The central processing unit (101) is used for when the power battery pack (2) there are the abnormal single batteries of electrolyte exception
When, the solenoid valve (103) and the pump (104) are controlled, the electrolyte in the electrolyte fluid reservoir (102) is injected into institute
State abnormal single battery.
2. on-vehicle battery control system according to claim 1, which is characterized in that every in the power battery pack (2)
The corresponding solenoid valve (103) of a single battery, each solenoid valve (103) include exhaust solenoid valve (1031) and note
Liquid electromagnetic valve (1032), the pump (104) includes aspiration pump (1041) and topping-up pump (1042)；
The aspiration pump (1041) is used for after the central processing unit (101) open the exhaust solenoid valve (1031), right
The exception single battery is evacuated；
The topping-up pump (1042) is used to reach the lower limit of preset suction pressure when the suction pressure of the abnormal single battery
After threshold value and the exhaust solenoid valve (1031) are closed, the fluid injection solenoid valve (1032) is opened, to the abnormal single battery
Carry out filling electrolyte；
The central processing unit (101) is also used to reach preset liquid filling pressure when the liquid filling pressure of the abnormal single battery
Upper limit threshold when, or when the reservoir quantity of the abnormal single battery reaches preset fluid injection threshold value, close the topping-up pump
(1042) and the fluid injection solenoid valve (1032).
3. on-vehicle battery control system according to claim 2, which is characterized in that the exhaust solenoid valve (1031) and institute
Stating fluid injection solenoid valve (1032) is check valve.
4. on-vehicle battery control system according to claim 1, which is characterized in that the central processing unit (101) is logical
The battery management system for crossing CAN bus and vehicle connects, for receiving the described for notifying of the battery management system transmission
There are the exception informations of electrolyte abnormal conditions for abnormal single battery；
Wherein, the exception information is that the battery management system is determined according to the state-of-charge of the abnormal single battery.
5. a kind of on-vehicle battery control method, which is characterized in that be applied to on-vehicle battery control system, on-vehicle battery control system
It include: electrolyte balance device (1), power battery pack (2) and for connecting the electrolyte balance device (1) and described dynamic
The pipeline of each single battery in power battery pack (2)；The electrolyte balance device (1) includes central processing unit (101), electricity
Solve liquid fluid reservoir (102), solenoid valve (103) and pump (104)；The on-vehicle battery control method includes:
When occurring the abnormal single battery of electrolyte exception in the power battery pack (2), control the solenoid valve (103) with
And the pump (104), the electrolyte fluid reservoir (102) is connected to the abnormal single battery；
It, will be in the electrolyte fluid reservoir (102) after the electrolyte fluid reservoir (102) is connected to the abnormal single battery
The electrolyte injection abnormal single battery.
6. on-vehicle battery control method according to claim 5, which is characterized in that every in the power battery pack (2)
The corresponding solenoid valve (103) of a single battery, each solenoid valve (103) include exhaust solenoid valve (1031) and fluid injection electricity
Magnet valve (1032), the pump (104) includes aspiration pump (1041) and topping-up pump (1042)；
It is described when occurring the abnormal single battery of electrolyte exception in the power battery pack (2), control the solenoid valve
(103) and the pump (104), the electrolyte fluid reservoir (102) is connected to the abnormal single battery, comprising:
When the central processing unit (101) receives described there are when the exception information of electrolyte exception, the exhaust is controlled
Solenoid valve (1031) is opened, and is evacuated using the aspiration pump (1041) to the abnormal single battery；
When the suction pressure of the abnormal single battery reaches the lower threshold of preset suction pressure, the central processing list
First (101) control the exhaust solenoid valve (1031) and close, and the fluid injection solenoid valve (1032) is opened；
It is described after the electrolyte fluid reservoir (102) is connected to the abnormal single battery, by the electrolyte fluid reservoir
(102) the electrolyte injection abnormal single battery in, comprising:
After the fluid injection solenoid valve (1032) is opened, the central processing unit (101) controls the topping-up pump (1042) and beats
It opens, filling electrolyte is carried out to the abnormal single battery；
When the liquid filling pressure of the abnormal single battery reaches the upper limit threshold of preset liquid filling pressure, or when the exception is single
When the reservoir quantity of body battery reaches preset fluid injection threshold value, the central processing unit (101) controls the topping-up pump (1042)
It is closed with the fluid injection solenoid valve (1032).
7. on-vehicle battery control method according to claim 6, which is characterized in that the exhaust solenoid valve (1031) and institute
Stating fluid injection solenoid valve (1032) is check valve.
8. on-vehicle battery control method according to claim 5, which is characterized in that the central processing unit (101) is logical
The battery management system for crossing CAN bus and vehicle connects, for receiving the described for notifying of the battery management system transmission
There are the exception informations of electrolyte abnormal conditions for abnormal single battery；
Wherein, the exception information is that the battery management system is determined according to the state-of-charge of the abnormal single battery.
9. a kind of vehicle, which is characterized in that the vehicle includes claim 1-4 described in any item on-vehicle battery controls system
System.
Priority Applications (1)
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| CN201711160555.2A CN110015139A (en) | 2017-11-20 | 2017-11-20 | On-vehicle battery control system, method and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160555.2A CN110015139A (en) | 2017-11-20 | 2017-11-20 | On-vehicle battery control system, method and vehicle |
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Application publication date: 20190716 |