CN108282015A - Battery monitoring device and control system - Google Patents
Battery monitoring device and control system Download PDFInfo
- Publication number
- CN108282015A CN108282015A CN201810296936.1A CN201810296936A CN108282015A CN 108282015 A CN108282015 A CN 108282015A CN 201810296936 A CN201810296936 A CN 201810296936A CN 108282015 A CN108282015 A CN 108282015A
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- Prior art keywords
- mos device
- battery
- connecting pin
- entire car
- car controller
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 claims abstract description 40
- 239000000178 monomer Substances 0.000 claims abstract description 35
- 230000005611 electricity Effects 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 50
- 230000008569 process Effects 0.000 abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 25
- 229910052744 lithium Inorganic materials 0.000 abstract description 25
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H02J7/0026—
-
- 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
-
- H02J7/0021—
-
- H02J7/0077—
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of battery monitoring device and control system, device includes：Master control borad and power amplifier board；Master control borad is used to monomer output voltage and single battery temperature being sent to entire car controller, if receiving the charge protection control instruction of entire car controller return, generates charge protection according to charge protection control instruction and controls signal；If receiving the discharge prevention control instruction of entire car controller return, discharge prevention is generated according to discharge prevention control instruction and controls signal；Power amplifier board is used for when the grid of the first MOS device receives charge protection and controls signal, and the first MOS device is not turned on；When the grid of the second MOS device, which receives discharge prevention, controls signal; second MOS device is not turned on; alleviate the charging process of the lithium battery existing in the prior art after protection circuit plates switch disconnects and the problem of inconvenient user uses caused by discharge process is all disconnected, reaches the technique effect for not only ensureing that battery pack charge and discharge are safe but also user-friendly.
Description
Technical field
The present invention relates to battery cell monitoring technical fields, more particularly, to a kind of battery monitoring device and control system.
Background technology
Lithium is located at the 3rd on the periodic table of elements, because outer-shell electron number is 1, is easy to lose to form rock-steady structure,
Therefore lithium is a kind of very active metal.The lithium ion battery made of elemental lithium, with discharge current is big, internal resistance is low, the service life
It the advantages that long and memory-less effect, has been widely used.But lithium ion battery forbids overcharge, overdischarge in use
And overcurrent, it otherwise will cause the accidents such as shorter battery life, on fire or explosion, therefore type lithium battery can be filled all to connect
One block protection circuit board protects the safety of battery core.
Existing protection circuit plates are a simplex switch, the charging process and discharge process of lithium battery after switch disconnects
All it is disconnected.However, in practical applications, may there is the case where stopping after lithium battery charging, lithium battery to be needed to discharge；
Alternatively, the case where existing for lithium battery charging, not needing lithium battery electric discharge, it has not been convenient to which user uses.
Invention content
In view of this, the purpose of the present invention is to provide a kind of battery monitoring device and control system, to alleviate existing skill
Caused by the charging process of lithium battery and discharge process are all disconnected after protection circuit plates switch disconnects present in art
The technical issues of inconvenient user uses.
In a first aspect, an embodiment of the present invention provides a kind of battery monitoring device, it is applied to the electricity comprising entire car controller
In electrical automobile, the battery monitoring device includes：Master control borad and power amplifier board, the power amplifier board include MOS device group, the MOS
Device group includes multiple MOS device units, and multiple MOS device units are connected in parallel, each MOS device unit packet
It includes：First MOS device and the second MOS device；
The master control borad is connected with entire car controller, the monomer output voltage and single battery of the battery pack for that will acquire
Temperature is sent to the entire car controller, if receiving the entire car controller according to the monomer output voltage and the monomer
The charge protection control instruction that battery temperature returns generates charge protection according to the charge protection control instruction and controls signal；
If receiving the discharge prevention control that the entire car controller is returned according to the monomer output voltage and the single battery temperature
System instruction generates discharge prevention according to the discharge prevention control instruction and controls signal；
The power amplifier board is connected with the master control borad, and the power amplifier board is connected in series with the battery pack, for when each
When the grid of first MOS device in the MOS device unit receives the charge protection control signal, described first
MOS device is not turned on, and is not charged so that the battery pack is only discharged；The 2nd MOS in each MOS device unit
When the grid of device receives the discharge prevention control signal, second MOS device is not turned on, so that the battery pack is only
Charging is not discharged.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiments of first aspect, wherein institute
Master control borad is stated, is additionally operable to receive the current regulation control instruction that the entire car controller is returned according to the monomer output voltage,
It is instructed according to the current regulation control and generates adjusting control signal；
The power amplifier board is additionally operable to receive when the grid of first MOS device in each MOS device unit
When the adjusting control signal, reduce the charging current of the battery pack；Described second in each MOS device unit
When the grid of MOS device receives the adjusting control signal, reduce the discharge current of the battery pack.
With reference to first aspect, an embodiment of the present invention provides second of possible embodiments of first aspect, wherein every
A MOS device unit includes the first source electrode connecting pin, the second source electrode connecting pin, drain electrode connecting pin, first grid connecting pin
With second grid connecting pin；
First source electrode connecting pins of multiple MOS device units connects, multiple MOS device units it is described
Second source electrode connecting pin connects, the drain electrode connecting pin connection of multiple MOS device units, multiple MOS device units
The first grid connecting pin is connect with the first control terminal of the master control borad, and described the second of multiple MOS device units
Grid connecting pin is connect with the second control terminal of the master control borad.
With reference to first aspect, an embodiment of the present invention provides the third possible embodiments of first aspect, wherein
In each MOS device unit, the draining of first MOS device, the drain electrode of second MOS device and the drain electrode company
End connection is connect, the source electrode of first MOS device in each MOS device unit and first source electrode connecting pin connect
It connects, the source electrode of second MOS device in each MOS device unit is connected with second source electrode connecting pin, each
The grid of first MOS device in the MOS device unit is connected with the first grid connecting pin, each MOS
The grid of second MOS device in device cell is connected with the second grid connecting pin.
With reference to first aspect, an embodiment of the present invention provides the 4th kind of possible embodiments of first aspect, wherein institute
Stating MOS device unit further includes：Current-limiting resistance；
In each MOS device unit, the first connection of the source electrode and the current-limiting resistance of second MOS device
End connection, the second connection end of the current-limiting resistance are connected with second source electrode connecting pin.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiments of first aspect, wherein institute
Stating master control borad includes：Voltage acquisition module and temperature collecting module, the voltage acquisition module include：It is multiple to be used to acquire electricity
The voltage sensor of monomer battery voltage, the temperature collecting module include in the packet of pond：Multiple temperature sensors；
The voltage acquisition module is connected with the entire car controller, the list for acquiring multiple voltage sensors
The voltage of body battery is sent to the entire car controller；
The temperature collecting module is connected with the entire car controller, the list for acquiring multiple temperature sensors
The temperature of body battery is sent to the entire car controller.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiments of first aspect, wherein institute
State the top that power amplifier board is set to the battery pack.
With reference to first aspect, an embodiment of the present invention provides the 7th kind of possible embodiments of first aspect, wherein institute
The vehicular power-bottle in electric vehicle is stated to power for the master control borad.
Second aspect, the embodiment of the present invention also provide a kind of control system, including：Entire car controller, battery pack and such as the
On the one hand any battery monitoring device.
The third aspect, the embodiment of the present invention also provide a kind of electric vehicle, including：Battery as described in first aspect is any
Monitoring device.
The embodiment of the present invention brings following advantageous effect：The battery monitoring device application provided in an embodiment of the present invention
In the electric vehicle comprising entire car controller, the battery monitoring device includes：Master control borad and power amplifier board, the power amplifier board packet
MOS device group is included, the MOS device group includes multiple MOS device units, and multiple MOS device units are connected in parallel, each
The MOS device unit includes：First MOS device and the second MOS device；The master control borad is connected with entire car controller, is used for
The monomer output voltage of the battery pack of acquisition and single battery temperature are sent to the entire car controller, if receiving described whole
The charge protection control instruction that vehicle controller is returned according to the monomer output voltage and the single battery temperature, according to described
Charge protection control instruction generates charge protection and controls signal；If receive the entire car controller exports electricity according to the monomer
The discharge prevention control instruction that pressure and the single battery temperature return generates electric discharge according to the discharge prevention control instruction and protects
Shield control signal；The power amplifier board is connected with the master control borad, and the power amplifier board is connected in series with the battery pack, for when every
When the grid of first MOS device in a MOS device unit receives charge protection control signal, described the
One MOS device is not turned on, and is not charged so that the battery pack is only discharged；Described second in each MOS device unit
When the grid of MOS device receives the discharge prevention control signal, second MOS device is not turned on, so that the battery
Packet only do not discharge by charging.
So when the entire car controller judged according to the monomer output voltage and the single battery temperature it is described
When battery pack is not suitable for carrying out charging process, the entire car controller sends charge protection control instruction to the master control borad, when
After the master control borad receives the charge protection control instruction that the entire car controller returns, referred to according to charge protection control
It enables and generates charge protection control signal, first MOS device in each of the power amplifier board MOS device unit
Grid when receiving charge protection control signal, first MOS device is not turned on, when first MOS device not
When conducting, the battery pack cannot carry out charging process, do not charge, reach for battery so that the battery pack is only discharged
The charge protection effect of packet, meanwhile, the discharge process of the battery pack is not influenced；When the entire car controller is according to the monomer
When output voltage and the single battery temperature judge that the battery pack is not suitable for carrying out discharge process, the entire car controller
The discharge prevention control instruction is sent to the master control borad, when the master control borad receives putting for the entire car controller return
After electric protection control instruction, discharge prevention is generated according to the discharge prevention control instruction and controls signal, when in the power amplifier board
Each of the grid of second MOS device in MOS device unit when receiving the discharge prevention control signal, institute
The second MOS device is stated to be not turned on, when second MOS device is not turned on, the battery pack cannot carry out discharge process,
It does not discharge so that the battery pack only charges, reaches the discharge prevention effect for battery pack, meanwhile, the battery pack is not influenced
Charging process, therefore, avoid due to protection circuit plates switch disconnect after lithium battery charging process and discharge process all broken
The problem of inconvenient user uses caused by opening, after alleviating the switch disconnection existing in the prior art due to protection circuit plates
The charging process and discharge process of lithium battery the problem of inconvenient user's use, have reached caused by being all disconnected and have both ensured electricity
The safe and user-friendly technique effect of pond packet charge and discharge.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the first structural schematic diagram of MOS device unit provided in an embodiment of the present invention；
Fig. 2 is second of structural schematic diagram of MOS device unit provided in an embodiment of the present invention；
Fig. 3 is the circuit diagram of power amplifier board provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of control system provided in an embodiment of the present invention；
Fig. 5 is the equivalent circuit schematic of power amplifier board provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Currently, lithium is located at the 3rd on the periodic table of elements, because outer-shell electron number is 1, it is easy to lose to form stabilization
Structure, therefore lithium is a kind of very active metal.The lithium ion battery made of elemental lithium, have discharge current is big, internal resistance is low,
It the advantages that long lifespan and memory-less effect, has been widely used.But lithium ion battery forbids overcharge, mistake in use
Otherwise electric discharge and overcurrent will cause the accidents such as shorter battery life, on fire or explosion, therefore can fill type lithium battery and all can
A block protection circuit board is connected to protect the safety of battery core.
Existing protection circuit plates are a simplex switch, the charging process and discharge process of lithium battery after switch disconnects
All it is disconnected.However, in practical applications, may there is the case where stopping after lithium battery charging, lithium battery to be needed to discharge；
Alternatively, the case where existing for lithium battery charging, not needing lithium battery electric discharge, it has not been convenient to which user uses, and is based on this, and the present invention is implemented
A kind of battery monitoring device and control system that example provides can be alleviated existing in the prior art since protection circuit plates switch
The technical issues of inconvenient user uses caused by the charging process of lithium battery and discharge process are all disconnected after disconnection, reaches
Not only ensure the safe but also user-friendly technique effect of battery pack charge and discharge.
For ease of understanding the present embodiment, first to a kind of battery monitoring device disclosed in the embodiment of the present invention into
Row is discussed in detail, and the battery monitoring device is applied in the electric vehicle comprising entire car controller, the battery monitoring device
Including：Master control borad and power amplifier board, the power amplifier board include MOS device group, and the MOS device group includes multiple MOS device units,
Multiple MOS device units are connected in parallel, and each MOS device unit includes：First MOS device and the second MOS device.
Illustratively, the vehicular power-bottle in the electric vehicle is powered for the master control borad.The master control borad and described whole
Vehicle controller is communicated by data line.The bottom plate of the power amplifier board can be copper coin.The master control borad does not need transformer
It is isolated, without isolation optocoupler, to save manufacturing cost.The master control borad can be arranged in a shell, this
The side of shell is provided with through-hole.
Illustratively, as shown in Figure 1, each MOS device unit may include：First source electrode connecting pin 11, second
Source electrode connecting pin 12, drain electrode connecting pin 13, first grid connecting pin 14 and second grid connecting pin 15.Multiple MOS devices
First source electrode connecting pin 11 of unit connects, and second source electrode connecting pin 12 of multiple MOS device units connects,
The drain electrode connecting pin 13 of multiple MOS device units connects, the first grid connecting pin of multiple MOS device units
14 connect with the first control terminal of the master control borad, the second grid connecting pin 15 of multiple MOS device units and institute
State the second control terminal connection of master control borad.
Illustratively, as shown in Fig. 2, in each MOS device unit, the drain electrode 21 of first MOS device, institute
Drain electrode 24 and the drain electrode connecting pin 13 connection of the second MOS device are stated, each described first in the MOS device unit
The source electrode 22 of MOS device and first source electrode connecting pin 11 connect, the 2nd MOS in each MOS device unit
The source electrode 26 of device and second source electrode connecting pin 12 connect, first MOS device in each MOS device unit
Grid 23 and the first grid connecting pin 14 connection, the grid of second MOS device in each MOS device unit
Pole 25 and the second grid connecting pin 15 connection.
Illustratively, the MOS device unit can also include：Current-limiting resistance.In each MOS device unit,
The source electrode 26 of second MOS device is connected with the first connecting pin of the current-limiting resistance, the second connection of the current-limiting resistance
End and second source electrode connecting pin 12 connect.The current-limiting resistance can be copper wire.The copper wire can be constantan wire, described
The diameter of copper wire can be 1 millimeter.Compared to general resistance, the volume that copper wire occupies is smaller, saves space.The power
The circuit diagram of plate can be as shown in Figure 3.
The master control borad is connected with entire car controller, the monomer output voltage and single battery of the battery pack for that will acquire
Temperature is sent to the entire car controller, if receiving the entire car controller according to the monomer output voltage and the monomer
The charge protection control instruction that battery temperature returns generates charge protection according to the charge protection control instruction and controls signal；
If receiving the discharge prevention control that the entire car controller is returned according to the monomer output voltage and the single battery temperature
System instruction generates discharge prevention according to the discharge prevention control instruction and controls signal.
Illustratively, the master control borad may include：Voltage acquisition module and temperature collecting module.The voltage acquisition mould
May include in block：Multiple voltage sensors for acquiring monomer battery voltage in battery pack, the voltage sensor and institute
The output end for stating single battery connects, and the quantity of single battery is equal in the quantity of the voltage sensor and the battery pack
, each voltage sensor acquires the output voltage of a single battery.The temperature collecting module may include：It is multiple
Temperature sensor, the cage connection of the temp probe of the temperature sensor and the single battery, the temperature sensor
Quantity can be unequal with the quantity of single battery in the battery pack.The voltage acquisition module and the entire car controller connect
It connects, for the voltage of the single battery of multiple voltage sensor acquisitions to be sent to the entire car controller.The temperature
Acquisition module is connected with the entire car controller, for sending the temperature of the single battery of multiple temperature sensor acquisitions
To the entire car controller.
Illustratively, the entire car controller according to the monomer output voltage and the single battery temperature to judge
State whether battery pack will carry out charge protection either discharge prevention.When any one monomer in multiple monomer output voltages is defeated
When going out voltage less than preset minimum voltage threshold value, then do not allow battery pack to continue to discharge, discharge prevention is carried out to battery pack.When
When any one monomer output voltage in multiple monomer output voltages is higher than preset ceiling voltage threshold value, then do not allow battery
Packet continues to charge, and charge protection is carried out to battery pack.When single battery temperature is less than subzero 20 degrees Celsius or Celsius higher than 60
When spending, then do not allow battery pack to continue to discharge, discharge prevention is carried out to battery pack.When single battery temperature less than 0 degree Celsius or
When person is higher than 55 degrees Celsius, then do not allow battery pack to continue to charge, charge protection is carried out to battery pack.When entire car controller will be into
When row discharge prevention, then discharge prevention control instruction is sent to master control borad.When entire car controller will carry out charge protection, then
Charge protection control instruction is sent to master control borad.
Illustratively, the master control borad controls signal from a signal output port output charge protection, from another letter
Number output port output discharge prevention controls signal.
The power amplifier board is connected with the master control borad, and the power amplifier board is connected in series with the battery pack, for when each
When the grid of first MOS device in the MOS device unit receives the charge protection control signal, described first
MOS device is not turned on, and is not charged so that the battery pack is only discharged；The 2nd MOS in each MOS device unit
When the grid of device receives the discharge prevention control signal, second MOS device is not turned on, so that the battery pack is only
Charging is not discharged.
Illustratively, the equivalent circuit schematic of the power amplifier board can be as shown in Figure 5.In the equivalent circuit schematic
Including：First switch 51, the first light emitting diode 52, second switch 53 and the second light emitting diode 54.When the first MOS devices
When part is not turned on, first switch 51 in Fig. 5 can be equivalent to and be not closed, while second switch 53 is closed.Due to first luminous two
The one-way conduction of pole pipe 52, electric current can only flow to cathode from the anode of battery pack, so, battery pack, which can only discharge, to fill
Electricity has carried out charge protection to battery pack.When second MOS device is not turned on, first switch 51 in Fig. 5 can be equivalent to
It is closed, while second switch 53 is not closed.Due to the one-way conduction of the second light emitting diode 54, electric current can only be from battery pack
Cathode flow direction anode, so, battery pack, which can only charge, to discharge, and discharge prevention has been carried out to battery pack.
Illustratively, the power amplifier board can be set to the top of the battery pack.May include 15 in the battery pack
A concatenated single battery, each single battery in 3.2V or so, so, the total voltage of the battery pack is 48V.At this
In the case of kind, the quantity of the voltage sensor could be provided as 15, and the quantity of the temperature sensor could be provided as 8
It is a.25 MOS device units can be set in the MOS device group and carry out parallel connection.
Illustratively, since the power amplifier board has used MOS device, according to the self character of the MOS device, the work(
Rate plate can be cut off with high current, can be turned off in battery pack charge and discharge process, not will produce arcing, will not burn out power
Plate.
In the embodiment of the present invention, the battery monitoring device provided in an embodiment of the present invention is applied to include entire car controller
Electric vehicle in, the battery monitoring device includes：Master control borad and power amplifier board, the power amplifier board includes MOS device group, described
MOS device group includes multiple MOS device units, and multiple MOS device units are connected in parallel, each MOS device unit
Including：First MOS device and the second MOS device；The master control borad is connected with entire car controller, the battery pack for that will acquire
Monomer output voltage and single battery temperature are sent to the entire car controller, if receiving the entire car controller according to
The charge protection control instruction that monomer output voltage and the single battery temperature return, according to the charge protection control instruction
It generates charge protection and controls signal；If receiving the entire car controller according to the monomer output voltage and the single battery
The discharge prevention control instruction that temperature returns generates discharge prevention according to the discharge prevention control instruction and controls signal；It is described
Power amplifier board is connected with the master control borad, and the power amplifier board is connected in series with the battery pack, for when each MOS device list
When the grid of first MOS device in member receives the charge protection control signal, first MOS device is not led
It is logical, it does not charge so that the battery pack is only discharged；When the grid of second MOS device in each MOS device unit
When receiving the discharge prevention control signal, second MOS device is not turned on, and is not put so that the battery pack only charges
Electricity.
So when the entire car controller judged according to the monomer output voltage and the single battery temperature it is described
When battery pack is not suitable for carrying out charging process, the entire car controller sends charge protection control instruction to the master control borad, when
After the master control borad receives the charge protection control instruction that the entire car controller returns, referred to according to charge protection control
It enables and generates charge protection control signal, first MOS device in each of the power amplifier board MOS device unit
Grid when receiving charge protection control signal, first MOS device is not turned on, when first MOS device not
When conducting, the battery pack cannot carry out charging process, do not charge, reach for battery so that the battery pack is only discharged
The charge protection effect of packet, meanwhile, the discharge process of the battery pack is not influenced；When the entire car controller is according to the monomer
When output voltage and the single battery temperature judge that the battery pack is not suitable for carrying out discharge process, the entire car controller
The discharge prevention control instruction is sent to the master control borad, when the master control borad receives putting for the entire car controller return
After electric protection control instruction, discharge prevention is generated according to the discharge prevention control instruction and controls signal, when in the power amplifier board
Each of the grid of second MOS device in MOS device unit when receiving the discharge prevention control signal, institute
The second MOS device is stated to be not turned on, when second MOS device is not turned on, the battery pack cannot carry out discharge process,
It does not discharge so that the battery pack only charges, reaches the discharge prevention effect for battery pack, meanwhile, the battery pack is not influenced
Charging process, therefore, avoid due to protection circuit plates switch disconnect after lithium battery charging process and discharge process all broken
The problem of inconvenient user uses caused by opening, after alleviating the switch disconnection existing in the prior art due to protection circuit plates
The charging process and discharge process of lithium battery the problem of inconvenient user's use, have reached caused by being all disconnected and have both ensured electricity
The safe and user-friendly technique effect of pond packet charge and discharge.
In another embodiment of the present invention, the master control borad is additionally operable to receive the entire car controller according to the list
The current regulation control instruction that body output voltage returns, instructs according to the current regulation control and generates adjusting control signal.Institute
Power amplifier board is stated, is additionally operable to receive the adjusting control when the grid of first MOS device in each MOS device unit
When signal processed, reduce the charging current of the battery pack；When second MOS device in each MOS device unit
When grid receives the adjusting control signal, reduce the discharge current of the battery pack.
Illustratively, when entire car controller according to the monomer output voltage judge the charging current of power amplifier board it is excessive or
When person's discharge current is excessive, then sends current regulation control and instruct to the master control borad.The master control borad is according to current regulation control
System instruction generates adjusting control signal.When the grid of first MOS device in the power amplifier board receives the adjusting control
When signal processed, reduce the charging current of the battery pack；When the grid of second MOS device in the power amplifier board receives
When the adjusting control signal, reduce the discharge current of the battery pack.
In the embodiment of the present invention, when discharging into power shortage due to battery pack or be charged to nearly completely, then high current is used
Charge and discharge can damage battery, so, the electric current that the power amplifier board is controlled using the entire car controller and the master control borad is just
Normal current value extends the service life of battery pack to ensure the normal operation circumstances of battery pack.
In another embodiment of the present invention, it is situated between in detail to a kind of control system disclosed in the embodiment of the present invention
It continues, the control system includes：Entire car controller, battery pack and the battery monitoring device as described in above-described embodiment is any.
Illustratively, as shown in figure 4, the control system may include：Entire car controller 41, battery pack 43 and as above-mentioned
Any battery monitoring device 42 of embodiment.
In another embodiment of the present invention, it is situated between in detail to a kind of electric vehicle disclosed in the embodiment of the present invention
It continues, the electric vehicle includes：Battery monitoring device as described in above-described embodiment is any.
Unless specifically stated otherwise, the opposite step of the component and step that otherwise illustrate in these embodiments, digital table
It is not limit the scope of the invention up to formula and numerical value.
The technique effect and preceding method embodiment phase of the device that the embodiment of the present invention is provided, realization principle and generation
Together, to briefly describe, device embodiment part does not refer to place, can refer to corresponding contents in preceding method embodiment.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustrative, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
Flow chart and block diagram in attached drawing show the system, method and computer journey of multiple embodiments according to the present invention
The architecture, function and operation in the cards of sequence product.In this regard, each box in flowchart or block diagram can generation
A part for a part for one module, section or code of table, the module, section or code includes one or more uses
The executable instruction of the logic function as defined in realization.It should also be noted that in some implementations as replacements, being marked in box
The function of note can also occur in a different order than that indicated in the drawings.For example, two continuous boxes can essentially base
Originally it is performed in parallel, they can also be executed in the opposite order sometimes, this is depended on the functions involved.It is also noted that
It is the combination of each box in block diagram and or flow chart and the box in block diagram and or flow chart, can uses and execute rule
The dedicated hardware based system of fixed function or action is realized, or can use the group of specialized hardware and computer instruction
It closes to realize.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
The computer program product for the progress battery monitoring device that the embodiment of the present invention is provided, including store processor
The computer readable storage medium of executable non-volatile program code, the instruction that said program code includes can be used for executing
Method described in previous methods embodiment, specific implementation can be found in embodiment of the method, and details are not described herein.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of division of logic function, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be by some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in the executable non-volatile computer read/write memory medium of a processor.Based on this understanding, of the invention
Technical solution substantially the part of the part that contributes to existing technology or the technical solution can be with software in other words
The form of product embodies, which is stored in a storage medium, including some instructions use so that
One computer equipment (can be personal computer, server or the network equipment etc.) executes each embodiment institute of the present invention
State all or part of step of method.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-
Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with
Store the medium of program code.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of battery monitoring device, which is characterized in that be applied in the electric vehicle comprising entire car controller, the battery prison
Controlling device includes：Master control borad and power amplifier board, the power amplifier board include MOS device group, and the MOS device group includes multiple MOS devices
Part unit, multiple MOS device units are connected in parallel, and each MOS device unit includes：First MOS device and second
MOS device；
The master control borad is connected with entire car controller, the monomer output voltage and single battery temperature of the battery pack for that will acquire
It is sent to the entire car controller, if receiving the entire car controller according to the monomer output voltage and the single battery
The charge protection control instruction that temperature returns generates charge protection according to the charge protection control instruction and controls signal；If connecing
The discharge prevention control that the entire car controller is returned according to the monomer output voltage and the single battery temperature is received to refer to
It enables, generating discharge prevention according to the discharge prevention control instruction controls signal；
The power amplifier board is connected with the master control borad, and the power amplifier board is connected in series with the battery pack, for when each described
When the grid of first MOS device in MOS device unit receives the charge protection control signal, the first MOS
Device is not turned on, and is not charged so that the battery pack is only discharged；The 2nd MOS devices in each MOS device unit
When the grid of part receives the discharge prevention control signal, second MOS device is not turned on, so that the battery pack is only filled
Electricity does not discharge.
2. battery monitoring device according to claim 1, which is characterized in that
The master control borad is additionally operable to receive the current regulation control that the entire car controller is returned according to the monomer output voltage
Instruction instructs according to the current regulation control and generates adjusting control signal；
The power amplifier board, be additionally operable to when the grid of first MOS device in each MOS device unit receive it is described
When adjusting control signal, reduce the charging current of the battery pack；The 2nd MOS in each MOS device unit
When the grid of device receives the adjusting control signal, reduce the discharge current of the battery pack.
3. battery monitoring device according to claim 2, which is characterized in that each MOS device unit includes first
Source electrode connecting pin, the second source electrode connecting pin, drain electrode connecting pin, first grid connecting pin and second grid connecting pin；
First source electrode connecting pin of multiple MOS device units connects, and described the second of multiple MOS device units
Source electrode connecting pin connects, the connection of the drain electrode connecting pins of multiple MOS device units, multiple MOS device units it is described
First grid connecting pin is connect with the first control terminal of the master control borad, the second grid of multiple MOS device units
Connecting pin is connect with the second control terminal of the master control borad.
4. battery monitoring device according to claim 3, which is characterized in that described in each MOS device unit
The draining of first MOS device, the drain electrode of second MOS device is connected with the drain electrode connecting pin, each MOS device list
The source electrode of first MOS device in member is connected with first source electrode connecting pin, the institute in each MOS device unit
The source electrode for stating the second MOS device is connected with second source electrode connecting pin, and described first in each MOS device unit
The grid of MOS device is connected with the first grid connecting pin, second MOS device in each MOS device unit
Grid connected with the second grid connecting pin.
5. battery monitoring device according to claim 4, which is characterized in that the MOS device unit further includes：Current limliting electricity
Resistance；
In each MOS device unit, the source electrode of second MOS device and the first connecting pin of the current-limiting resistance connect
It connects, the second connection end of the current-limiting resistance is connected with second source electrode connecting pin.
6. battery monitoring device according to claim 5, which is characterized in that the master control borad includes：Voltage acquisition module
And temperature collecting module, the voltage acquisition module include：Multiple voltages for acquiring monomer battery voltage in battery pack
Sensor, the temperature collecting module include：Multiple temperature sensors；
The voltage acquisition module is connected with the entire car controller, for the monomer of multiple voltage sensor acquisitions is electric
The voltage in pond is sent to the entire car controller；
The temperature collecting module is connected with the entire car controller, for the monomer of multiple temperature sensor acquisitions is electric
The temperature in pond is sent to the entire car controller.
7. battery monitoring device according to claim 6, which is characterized in that the power amplifier board is set to the battery pack
Top.
8. battery monitoring device according to claim 7, which is characterized in that the vehicular power-bottle in the electric vehicle is institute
State master control borad power supply.
9. a kind of control system, which is characterized in that including：Entire car controller, battery pack and as described in claim 1-8 is any
Battery monitoring device.
10. a kind of electric vehicle, which is characterized in that including：Battery monitoring device as described in claim 1-8 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296936.1A CN108282015A (en) | 2018-03-30 | 2018-03-30 | Battery monitoring device and control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810296936.1A CN108282015A (en) | 2018-03-30 | 2018-03-30 | Battery monitoring device and control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108282015A true CN108282015A (en) | 2018-07-13 |
Family
ID=62811289
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810296936.1A Pending CN108282015A (en) | 2018-03-30 | 2018-03-30 | Battery monitoring device and control system |
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| Country | Link |
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| CN (1) | CN108282015A (en) |
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| CN102035187A (en) * | 2010-11-23 | 2011-04-27 | 浙江绿源电动车有限公司 | Charger, discharge protection device, controller, charge and discharge protection device and system |
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| CN104283283A (en) * | 2014-10-27 | 2015-01-14 | 深圳市中兴移动通信有限公司 | Mobile terminal and circuit for reducing charge heating of rapid charge battery thereof |
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Application publication date: 20180713 |