CN108110868A - Battery cathode control loop protective device, battery component and unmanned plane - Google Patents
Battery cathode control loop protective device, battery component and unmanned plane Download PDFInfo
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- CN108110868A CN108110868A CN201810151418.0A CN201810151418A CN108110868A CN 108110868 A CN108110868 A CN 108110868A CN 201810151418 A CN201810151418 A CN 201810151418A CN 108110868 A CN108110868 A CN 108110868A
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- switch module
- battery
- driving
- protection circuit
- control loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- 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]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/10—Air crafts
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of battery cathode control loop protective device, battery component and unmanned plane.Battery cathode control loop protective device of the present invention, including：Processing unit, drive integrated circult IC, switch unit and protection circuit；Wherein, the first end of switch unit is used to connect the negative pole end of battery; the second end of switch unit is used to connect load circuit or charging unit; the output terminal of processing unit is with driving the input terminal of IC to be connected; the first output terminal of IC is driven with the first input end of circuit is protected to be connected; the second output terminal of IC is driven with the second input terminal of circuit is protected to be connected; the first output terminal of circuit and the first control terminal of switch unit is protected to connect, the second output terminal of circuit and the second control terminal of switch unit is protected to connect.The present invention solves the problems, such as that the battery of mostly string high voltage is difficult to control charge and discharge, and driving IC is avoided to need excessively high performance that could realize control battery charging and discharging.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of battery cathode control loop protective device, battery components
And unmanned plane.
Background technology
At present, the battery in unmanned plane can use integrated battery management mode, and the input/output voltage of battery is generally logical
The positive terminal for crossing battery is controlled, and this control mode can directly turn on and off the charge and discharge process to battery.
Fig. 1 is the circuit diagram of existing anode control loop device provided by the invention.It is as shown in Figure 1, existing
Anode control loop device mainly includes：Processor (not shown in figure 1), drive integrated circult (Integrated
Circuit, IC), the first N-type Metal-oxide-semicondutor-field-effect transistor (Negative channel-Metal-
Oxide-Semiconductor, NMOS) and the 2nd NMOS.Wherein, processor is connected with driving IC, the drain electrode of the first NMOS
It is connected with the anode of battery, the source electrode of the first NMOS is connected with the source electrode of the 2nd NMOS, the grid and the 2nd NMOS of the first NMOS
Grid all with driving IC be connected, the drain electrode of the 2nd NMOS is connected with load circuit or charging unit.And processor can be to driving
IC sends control signal so that driving IC can input the driving voltage than cell voltage bigger to the two NMOS so that two
A NMOS conductings, and then realize the charging between discharge process or battery and charging unit between battery and load circuit
Journey.
However, as plant protection unmanned plane, cruise unmanned plane and mapping unmanned plane etc. constantly rise, more string high voltages
Battery has obtained more and more applications.For go here and there more high voltage battery for, cell voltage can be increasing, then will
It asks driving IC also can be higher and higher to two NMOS driving voltages inputted, can cause the driving voltage of IC outputs is driven to be not easy to lead
Lead to two NMOS, so as to the charging between the discharge process or battery and charging unit that are unable to control between battery and load circuit
Process.
The content of the invention
The present invention provides a kind of battery cathode control loop protective device, battery component and unmanned plane, to realize that more strings are high
The battery of voltage can discharge to load circuit and charging unit can charge to the battery.
In a first aspect, the present invention provides a kind of battery cathode control loop protective device, including：Processing unit, driving collection
Into IC circuit, switch unit and protection circuit；
Wherein, the first end of the switch unit is used to connect the negative pole end of battery, and the second end of the switch unit is used
In connection load circuit or charging unit, the output terminal of the processing unit is connected with the input terminal of the driving IC, the drive
The first output terminal of dynamic IC is connected with the first input end of the protection circuit, the second output terminal of the driving IC and the guarantor
The second input terminal connection of protection circuit, the first control terminal of the first output terminal and the switch unit of the protection circuit connect
It connects, the second output terminal of the protection circuit is connected with the second control terminal of the switch unit；
The processing unit, for sending control signal to the driving IC, to control the driving IC to the protection
Circuit sends the driving voltage of the control signal instruction；
The protection circuit, for receive it is described driving IC send driving voltage, control the switching means conductive or
Shut-off, so that the battery discharge to the load circuit or stops discharging, alternatively, so that the charging unit is to the battery
It charges or stops charging.
Optionally, the switch unit includes：First switch module and second switch module；
Wherein, the control terminal of the first switch module is connected with the first output terminal of the protection circuit, and described second
The control terminal of switch module is connected with the second output terminal of the protection circuit；
The protection circuit, for when receiving the driving voltage that the driving IC is sent, the described on or off
One switch module and/or the second switch module.
Optionally,
The first end of the first switch module is used to connecting the negative pole end of the battery, and the of the first switch module
Two ends are connected with the first end of the second switch module, and the second end of the second switch module is electric for connecting the load
Road or the charging unit.
Optionally,
The first end of the first end of the first switch module and the second switch module is all used to connect the battery
Negative pole end, the second end of the first switch module is for connecting the load circuit, the second of the second switch module
It holds to connect the charging unit.
Optionally, the first switch module and the second switch module include：NMOS or IGBT.
Optionally, the protection circuit includes：3rd switch module, first resistor, diode and second resistance；
Wherein, the first end of the 3rd switch module is connected with the first output terminal of the driving IC, and the described 3rd opens
The control terminal for closing module is connected to ground, and the second end of the 3rd switch module is connected with the first end of the first resistor, institute
The second end for stating first resistor is connected with the anode of the diode, the cathode of the diode and the second switch module
Control terminal connects；
The first end of the second resistance is connected with the second output terminal of the driving IC, the second end of the second resistance
It is connected with the control terminal of the first switch module；
The protection circuit, for receive it is described driving IC send driving voltage, control the first switch module or
The second switch module on or off, the electric discharge so that battery discharges or stopped to the load circuit, alternatively, so that
The charging unit charges to the battery or stops charging.
Optionally, the protection circuit is additionally operable in the charging unit reversal connection and the protection circuit shut-off, control
The second switch module shut-off, to protect the battery.
Optionally, the protection circuit further includes：3rd resistor；
Wherein, the first end of the 3rd resistor respectively with the second end of the first resistor and the anode of the diode
Connection, the second end of the 3rd resistor connect respectively with the cathode of the control terminal of the second switch module and the diode
It connects.
Optionally, the protection circuit is additionally operable to when the second switch module turns on, stablize it is described protection circuit to
The voltage of the second switch module transfer, to protect the second switch module.
Optionally, the protection circuit further includes：4th resistance；
Wherein, the first end of the 4th resistance is connected with the cathode of the diode, the second end of the 4th resistance
It is connected with the second end of the second switch module.
Optionally, the protection circuit further includes：Bi-directional voltage stabilizing diode；
Wherein, the first end of the bi-directional voltage stabilizing diode is connected with the cathode of the diode, the bi-directional voltage stabilizing two
The second end of pole pipe is connected with the second end of the second switch module；
The protection circuit, for when the load circuit normally connects and the second switch module turns off, controlling
Voltage between the second end and control terminal of the second switch module is predeterminated voltage, with protect the second switch module and
The driving IC.
Optionally, the protection circuit is additionally operable to when the first switch module turns on, stablize it is described protection circuit to
The voltage of the first switch module transfer, to protect the first switch module.
Optionally, the protection circuit further includes：5th resistance；
Wherein, the first end of the 5th resistance respectively with the second end of the second resistance and the first switch module
Control terminal connection, the second end of the 5th resistance is connected with the first end of the first switch module.
Optionally, the 3rd switch module includes：PMOS or IGBT.
Optionally, the driving IC is additionally operable to the anode of connection battery, so that the battery is powered to the driving IC.
Optionally, further include：Current detecting unit；
Wherein, the first end of the current detecting unit is used to connect the negative pole end of the battery, the current detecting list
The second end of member is connected with the switch unit, for obtaining size of current and current direction on the negative pole end of the battery；
3rd end of the current detecting unit is connected with the input terminal of the processing unit, for the processing unit
Send the size of current and the current direction.
Second aspect, the present invention provide a kind of battery component, including：Battery and battery cathode control as described in relation to the first aspect
Loop protection device processed.
The third aspect, the present invention, which provides a kind of unmanned plane, includes fuselage, the battery for being installed in the fuselage, the unmanned plane
It further includes：The battery cathode control loop protective device as described in relation to the first aspect being installed on the fuselage.
Battery cathode control loop protective device provided by the invention, battery component and unmanned plane, by by switch unit
The negative pole end of battery is arranged on, control unit control driving IC sends driving voltage, which can be opened on and off
Unit is closed, process that the batteries of more string high voltages discharges to load circuit can be controlled and charging unit charges to the battery
Process.The present invention solves the problems, such as that the battery of mostly string high voltage is difficult to control charge and discharge, by the way that switch unit is placed on battery
Negative pole end so that IC is without excessively high driving voltage for driving, can meet the process of control battery charging and discharging, so as to effectively drop
The cost of low driving IC.
Description of the drawings
Fig. 1 is the circuit diagram of existing anode control loop device provided by the invention；
Fig. 2 is the structure diagram of battery cathode control loop protective device provided by the invention；
Fig. 3 is the circuit diagram of battery cathode control loop protective device provided by the invention；
Fig. 4 is the circuit diagram of battery cathode control loop protective device provided by the invention；
Fig. 5 is the structure diagram of battery component provided by the invention；
Fig. 6 is the structure diagram of unmanned plane provided by the invention.
Specific embodiment
In existing anode control loop device, driving IC is needed by boosting that NMOS is driven to realize conducting, more next
Higher cell voltage, the driving IC of inevitable requirement higher performance, it is difficult the electric discharge between control battery and load circuit to cause
Charging process between process or charging unit, but also the rising of existing anode control loop installation cost.Therefore, it is
It solves the above problems, the present embodiment can be controlled the input/output voltage of battery by the negative pole end of battery, avoid
Driving IC can realize the discharge process between battery and load circuit due to needing to improve performance and the problem of increase cost
Or charging process between battery and charging unit.
In the following, by specific embodiment, the concrete structure of battery cathode control loop protective device is described in detail.
Fig. 2 is the structure diagram of battery cathode control loop protective device provided by the invention, as shown in Fig. 2, this reality
Applying the battery cathode control loop protective device of example includes：Processing unit, drive integrated circult IC, switch unit and protection electricity
Road.
Wherein, the first end of switch unit is used to connect the negative pole end of battery, and the second end of switch unit is negative for connecting
Circuit or charging unit are carried, the output terminal of processing unit drives the first output terminal of IC with protecting with the input terminal of IC is driven to be connected
The first input end connection of protection circuit drives the second output terminal of IC to protect circuit with the second input terminal of circuit is protected to be connected
The first output terminal and switch unit the first control terminal connect, protect circuit second output terminal and switch unit second control
End connection processed.
For sending control signal to driving IC, IC is driven to switch unit and protection circuit hair with control for processing unit
Send driving voltage.
Circuit is protected, for receiving the driving voltage that driving IC is sent, switching means conductive or shut-off are controlled, so that battery
It discharges to load circuit or stops electric discharge, alternatively, so that charging unit charges to battery or stops charging.
Specifically, battery to load circuit discharge when, electric current is from the anode B+ of battery, one end PACK+, negative of load circuit
Other end PACK-, the cathode B- of battery for carrying circuit return B+, form the discharge loop of a battery.Similarly, charging unit
When charging to battery, electric current is from one end PACK+, the anode B+ of battery, the cathode B- of battery, the charging unit by charging unit
Other end PACK- returns the anode PACK+ of battery, forms the charge circuit of a battery.
Further, since the first end of switch unit is connected with battery, the second end of switch unit and load circuit or
Charging unit connects, and therefore, it is necessary to control switch unit, turns it on or turns off, can just realize battery to load
Circuit discharging stops the process that the process discharged or charging unit charge to battery or stopping is charged.Wherein, the present embodiment
The concrete structure of switch unit is not limited.
Further, processing unit by with drive IC input terminal connection, can to driving IC send control signal,
The first output terminal of driving IC and second output terminal can be controlled to export the driving voltage of control signal instruction respectively.Wherein, drive
The driving voltage that the first output terminal and second output terminal of dynamic IC each export can be identical, also can be different.And the tool of driving voltage
Body size can be set according to the voltage of turn-on and turn-off switch unit in practice and protection circuit, and the present embodiment is to this
It does not limit.
Further, since the first end of switch unit and the negative pole end of battery connect, for going here and there high voltage more
For battery, driving IC exports the driving of control protection electric circuit and switching means conductive or shut-off without excessively high voltage
Voltage, to driving the performance of IC without there is excessively high requirement, so as to reduce the cost of driving IC.Wherein, in the present embodiment
Driving IC can be arranged in booster, such as OZ8920, BQ76200 driving IC or driving circuit may be employed to export drive
Dynamic voltage, the present embodiment also do not limit the concrete structure for driving IC.
Further, control signal can be that instruction connection battery is corresponding with the access of load circuit or battery and charging unit
Signal or instruction close corresponding with the access of charging unit with the access or battery of the load circuit signal of battery, also
Can be that instruction prevents the corresponding signal of damage battery.Wherein, the present embodiment to the instruction content and concrete form of control signal all
It does not limit, need to only meet driving IC can export corresponding driving voltage according to control signal.
Further, the first output terminal of IC is driven to protect circuit by the connection of the first input end with protecting circuit
The first output terminal and switch unit first control terminal connection, and the second output terminal of IC is driven to pass through and protection circuit
The connection of second input terminal protects the connection of the second output terminal of circuit and the second control terminal of switch unit, can realize drive
Different driving voltages is sent to protection circuit by dynamic IC, and protection circuit controls switching means conductive or pass further according to driving voltage
It is disconnected.
On the one hand, the transmission of driving voltage can realize the process that battery discharges to load circuit or stopping is discharged.Wherein,
The present embodiment does not limit the concrete structure of load circuit.
When battery discharges to load circuit, driving voltage can control switch single via switch unit and protection circuit
Member conducting.When battery stops discharging to load circuit, driving voltage can control switch via switch unit and protection circuit
Unit turns off.
On the other hand, the transmission of driving voltage can also realize the process that charging unit charges to battery or stopping is charged.
Wherein, the present embodiment does not limit the concrete structure of charging unit.
When charging unit charges to battery, driving voltage can control switch single via switch unit and protection circuit
Member conducting.When charging unit stops charging to battery, driving voltage can control switch via switch unit and protection circuit
Unit turns off.
Battery cathode control loop protective device provided in this embodiment, by the cathode that switch unit is arranged on to battery
End, control unit control driving IC send driving voltage, which can be controlled more on and off switch unit
Go here and there the process discharged to load circuit of battery of high voltage and process that charging unit charges to the battery.The present embodiment solves
The problem of batteries of more string high voltages are difficult to control charge and discharge, by the negative pole end that switch unit is placed on to battery so that drive
Dynamic IC can meet the process of control battery charging and discharging without excessively high driving voltage, so as to effectively reduce driving IC into
This.
First, on the basis of above-mentioned Fig. 2 embodiments, with reference to Fig. 3 or Fig. 4, in the present embodiment switch unit it is specific
Structure is described in detail.
Fig. 3 is the circuit diagram of battery cathode control loop protective device provided by the invention, and Fig. 4 provides for the present invention
Battery cathode control loop protective device circuit diagram.As shown in Figure 3 or Figure 4, the switch unit of the present embodiment can be with
Including：First switch module and second switch module.
Wherein, the control terminal of first switch module is with protecting the first output terminal of circuit to be connected, the control of second switch module
End processed is with protecting the second output terminal of circuit to be connected.
Protect circuit, for receive driving IC send driving voltage when, on or off first switch module and/
Or second switch module.
Specifically, first switch module protects circuit that can pass through by the connection of the first output terminal with protecting circuit
The driving voltage that IC is driven to send controls the on or off of first switch module.Second switch module passes through with protecting circuit
Second output terminal connection, protection circuit can when receiving driving voltage, control second switch module conducting or pass
It is disconnected.
Optionally, first switch module and second switch module can include：NMOS or insulated gate bipolar transistor
(Insulated Gate Bipolar Transistor, IGBT), the present embodiment is to first switch module and second switch module
Concrete form do not limit.For convenience of description, in the present embodiment first switch module and second switch module using NMOS as
Example shows that processing unit is not shown in figs. 3 and 4 in Fig. 3 or Fig. 4.
Further, the connection mode between first switch module and second switch module can be there are many mode.In the following,
Two kinds of different connection modes of first switch module and second switch module are described in detail.
The first feasible embodiment, as shown in figure 3, optionally, the first end of first switch module is used to connect electricity
The negative pole end in pond, the second end of first switch module are connected with the first end of second switch module, and the second of second switch module
It holds to connect load circuit or charging unit.
Specifically, being connected in series by first switch module and second switch module so that battery cathode control loop
Protective device is equipped with a port PACK- at non-battery end, and the positive terminal of this port PACK- and battery can both connect load
Circuit can also connect charging unit.And pass through the connection of first switch module and battery, second switch module and load circuit
Or the connection of charging unit, can in the identical port of battery cathode control loop protective device, can not only realize battery to
The discharge process of load circuit can also realize charging process of the charging unit to battery.
Second of feasible embodiment, as shown in figure 4, optionally, the first end of first switch module is used to connect electricity
The negative pole end in pond, the second end of first switch module are connected with the first end of second switch module, and the second of second switch module
It holds to connect load circuit or charging unit.
Specifically, being connected in parallel by first switch module and second switch module so that battery cathode control loop
Protective device is set at non-battery end there are two port PACK1- and PACK2-, the positive terminal of battery and one of port PACK2-
Load circuit can be connected, the positive terminal of battery can be connected charging unit with another port PACK1-.Wherein, opened by first
The connection of module and battery is closed, the connection of first switch module and load circuit can realize electric discharge of the battery to load circuit
Process.By the connection of second switch module and battery, the connection of second switch module and charging unit can realize charging dress
Put the charging process to battery.
It will be understood by those skilled in the art that under normal circumstances, charging unit is smaller to the charging current of battery, battery pair
The discharge current of load circuit is larger.Based on this, the present embodiment battery cathode control loop protective device passes through the two ports
The charge and discharge process of battery can be separated, the charging process of battery can not only be allowd to use less MOS, reduction pair
The consumption of component, reduces the cost of component, and the separated form of charge and discharge is convenient for flexible design battery.
It further, can be according to the company of actual situation selection first switch module and second switch module in the present embodiment
Connect mode.And no matter first switch module uses which kind of above-mentioned connection mode, battery cathode control loop with second switch module
Protective device can realize discharge process from battery to load circuit and charging unit to the charging process of battery.
Secondly, continuing with Fig. 3 or Fig. 4, the concrete structure of the protection circuit in the present embodiment is described in detail.It can
Selection of land, protection circuit include：3rd switch module, first resistor, diode and second resistance.
Wherein, the first end of the 3rd switch module is with driving the first output terminal of IC to be connected, the control of the 3rd switch module
End is connected to ground, and the second end of the 3rd switch module and the first end of first resistor connect, the second end of first resistor and two poles
The anode connection of pipe, the cathode of diode are connected with the control terminal of second switch module.
The first end of second resistance is with driving the second output terminal of IC to be connected, second end and the first switch mould of second resistance
The control terminal connection of block.
Circuit is protected, for receiving the driving voltage that driving IC is sent, controls first switch module or second switch module
On or off, so that battery discharges to load circuit or stops discharging, alternatively, so that charging unit charges or stops to battery
It charges.
Specifically, the 3rd switch module can get the driving voltage that driving IC is sent by the connection with driving IC.
Wherein, optionally, the 3rd switch module includes：P-type Metal-oxide-semicondutor-field-effect transistor (Positive
Channel-Metal-Oxide-Semiconductor, PMOS) or IGBT.For convenience of description, the 3rd switch in the present embodiment
Module is shown by taking PMOS as an example in Fig. 3 or Fig. 4.Wherein, the first end of the 3rd switch module is the source electrode of PMOS, and the 3rd switchs
The control terminal of module is the grid of PMOS, and the second end of the 3rd switch module is the drain electrode of PMOS.
Optionally, circuit is protected, is opened specifically for receiving protection circuit in the control terminal of the 3rd switch module to second
When closing the driving voltage of module transfer, the 3rd switch module on or off can be controlled, so as on or off second switch
Module.
Specifically, by the drain electrode connection with first resistor, diode and second switch module successively of PMOS, can make
It must drive IC that can send the voltage of on or off second switch module to second switch module by POMS.Wherein, generally
Between the Standard resistance range of first resistor is 1-10K ohm.First resistor, which can play, to be prevented driving current excessive and damages second
The effect of switch module is also possible to prevent the scarce capacity of conducting second switch module.And pressure drop is typically chosen in the present embodiment
Smaller diode since the pressure drop of diode is small, can divide to avoid to driving voltage, cause second switch module without
Method turns on.
Optionally, circuit is protected, specifically for transmitting the voltage that circuit is protected to be transmitted to switch unit by second resistance,
Control first switch module on and off.Specifically, driving IC, second resistance is opened with first by the connection with second resistance
The connection of module is closed, first switch module on or off can be controlled under the effect of the partial pressure of second resistance.Wherein, generally
Between the Standard resistance range of second resistance is 1-10K ohm.Second resistance, which can play, to be prevented driving current excessive and damages first
The effect of switch module is also possible to prevent the scarce capacity of conducting first switch module.
Again, continuing with Fig. 3 or Fig. 4, protection circuit is except that can control first switch module or second switch module
Beyond on or off, also with protective effect.Below respectively to protection circuit to battery, first switch module in terms of three
And the protective effect that second switch module plays is described in detail.
In a first aspect, in the present embodiment protect circuit except can normal work when, be also prevented from charging unit with
During battery cathode control loop protective device reversal connection battery is protected not to be damaged.Optionally, circuit is protected, is additionally operable in the dress that charges
When putting reversal connection and protection circuit shut-off, control second switch module shut-off, to protect battery.
Specifically, charging unit and the connection mode of battery cathode control loop protective device include in the present embodiment：Just
It connects and reversal connection, wherein, the correct connection mode that charging unit can charge to battery is just being connected in, reversal connection can not for charging unit
The incorrect link mode to charge to battery.
Further, in the case where charging unit and battery cathode control loop protective device just connect, charging unit is worked as
When charging to battery, driving voltage can control switching means conductive via protection circuit and switch unit.When charging unit to
When battery stops charging, driving voltage can control switch unit to turn off via switch unit and protection circuit.
Further, in the case of charging unit and battery cathode control loop protective device reversal connection, the charging of reversal connection
Device can easily cause second switch module reverse-conducting, and then can damage battery when first switch module turns on.
Specifically, in order to avoid the above problem, driving IC can be by sending driving voltage to PMOS, driving voltage can
PMOS shut-offs are controlled, and the PMOS after shut-off enables to second switch module to be off state, so as to avoid filling for reversal connection
The impact that electric installation brings battery can be played the role of protecting battery.
Optionally, protection circuit further includes：3rd resistor.Wherein, the first end of 3rd resistor respectively with first resistor
Second end is connected with the anode of diode, the second end of 3rd resistor respectively with the control terminal of second switch module and diode
Cathode connects.
Specifically, when the driving voltage of IC inputs is driven to be the minimum voltage of low level, i.e. battery, due to the 3rd switch
Mould first end in the block (i.e. the source electrode of PMOS) is low level, and the control terminal (i.e. the grid of PMOS) of the 3rd switch module, because
This, which can control the 3rd switch module to close, the electricity at the 3rd end (i.e. the drain electrode of PMOS) of the 3rd switch module
Press the minimum voltage for battery.Even if in the case of charging unit and battery cathode control loop protective device reversal connection, charge
The voltage of the other end PACK- of device is drawn lower, even lower than the minimum voltage of battery.Again since the 3rd switch module is
It closes, and the 3rd resistor connection with the 3rd switch module and second switch module respectively so that the control of second switch module
The voltage of end processed and second end (i.e. the grid of PMOS and drain electrode) need to be consistent, and such second switch module, which is in, closes shape
State inserts the problem of instead resulting in cell damage so as to avoid charging unit.
Further, the resistance value of 3rd resistor is generally arranged to larger resistance value, due to 3rd resistor and diode simultaneously
Connection connection, diode can be by 3rd resistor short circuits so that 3rd resistor will not divide the energy for excessively, avoiding reducing driving voltage
It consumes and second switch module is caused to be not turned on.
Second aspect when second switch module turns on, protects company of the circuit by the control terminal with second switch module
It connects, the voltage of conducting second switch module can also be stablized, improve that battery discharges to load circuit or charging unit is to battery
The stability of charging.Optionally, circuit is protected, is additionally operable to when second switch module turns on, stablizes protection circuit and is opened to second
The voltage of module transfer is closed, to protect second switch module.
Specifically, when second switch module turns on, protection circuit can stablize the voltage of conducting second switch module, protect
Shield switch unit avoids the voltage received excessive and damages so that second switch module can stablize normal work, also make
Obtain charging unit enhances to the stability of the charge and discharge of battery.Optionally, protection circuit further includes：4th resistance.
Wherein, the cathode of the first end of the 4th resistance and diode connects, second end and the second switch mould of the 4th resistance
The second end connection of block.
Specifically, due to the 4th resistance and the control terminal of second switch module and second end (i.e. the grid of NMOS and drain electrode)
It all connects, therefore, the 4th resistance when second switch module turns on, can stablize the voltage of second switch module conducting, prevent
Excessively high voltage damage second switch module, plays a protective role to second switch module.Generally, the Standard resistance range of the 4th resistance
For M ohm of ranks.
Further, continuing with Fig. 3 or Fig. 4, when the voltage of the mostly battery of string high voltage is excessive, the guarantor of the present embodiment
Protection circuit further includes：Bi-directional voltage stabilizing diode.
Wherein, the cathode of the first end of bi-directional voltage stabilizing diode and diode connects, the second end of bi-directional voltage stabilizing diode
It is connected with the second end of second switch module.
Circuit is protected, for when load circuit normally connects and second switch module turns off, controlling second switch module
Second end and control terminal between voltage for predeterminated voltage, to protect second switch module and driving IC.
Specifically, due to bi-directional voltage stabilizing diode and the control terminal of second switch module and second end (the i.e. grid of NMOS
And drain electrode) all connect, therefore, when bi-directional voltage stabilizing diode can normally be connected in load circuit and second switch module turns off,
Stablize the voltage of second switch module, prevent excessively high voltage from damaging second switch module, protection is played to second switch module
Effect.
Further, in first switch module and second switch block coupled in series, when driving IC is defeated to the 3rd switch module
When the driving voltage entered is low level, if load circuit is not pulled out, at this point, the voltage on the positive terminal of electric current can be via negative
Carry one end PACK+ of circuit, the other end PACK- of load circuit, bi-directional voltage stabilizing diode, second resistance, first resistor, the 3rd
Switch module (i.e. the body diode of POMS) reaches driving IC, forms a circuit.
Further, in this circuit, certain partial pressure is had on bi-directional voltage stabilizing diode.And bi-directional voltage stabilizing diode
It is connected with the second end and control terminal (i.e. the grid of NMOS and drain electrode) of second switch module, therefore, protects the partial pressure on circuit
The just voltage between the second end and control terminal of second switch module.It, can be reversed and when protecting the partial pressure on circuit excessive
Puncture second switch module, damage second switch module.Therefore, protection circuit can control second end and the control of second switch module
Voltage between end processed is predeterminated voltage, which is less than the pressure voltage of second switch module, so as to second switch mould
Block plays a protective role.
Further, the present embodiment also can be by bi-directional voltage stabilizing diodes in parallel at the both ends of 3rd resistor so that two-way steady
Pressure diode and 3rd resistor can prevent second switch with the voltage of the second end of jointly stabilizing second switch module and control terminal
Module is reversed breakdown, plays the role of dual fail-safe to second switch module.Wherein it is possible to the resistance value of the 4th resistance is set
As far as possible big, larger resistance value can play the effect of current limliting, and excessive electric current is prevented to be flowed into driving IC and damage driving
IC, so as to play a protective role to second switch module and driving IC.
The third aspect when first switch module turns on, protects company of the circuit by the control terminal with first switch module
It connects, the voltage of conducting first switch module can be stablized, improve stability of the battery to load circuit discharge process.Optionally,
Circuit is protected, is additionally operable to when first switch module turns on, stablizes protection voltage of the circuit to first switch module transfer, to protect
Protect first switch module.
Specifically, when first switch module turns on, protection circuit can stablize the voltage of conducting first switch module, protect
Shield first switch module avoids the voltage received excessive and damages so that and first switch module can stablize normal work,
But also the stability enhancing of the discharge process of battery.Optionally, protection circuit further includes：5th resistance；
Wherein, the first end of the 5th resistance connects respectively with the control terminal of the second end of second resistance and first switch module
It connects, the second end of the 5th resistance is connected with the first end of first switch module.
Specifically, due to the 5th resistance and the control terminal of first switch module and second end (i.e. the grid of NMOS and drain electrode)
It all connects, therefore, the 5th resistance when first switch module turns on, can stablize the voltage of first switch module conducting, prevent
Excessively high voltage damage first switch module, plays a protective role to first switch module.Generally, the Standard resistance range of the 5th resistance
For M ohm of ranks.
Herein it should be noted that protection circuit can be selected according to actual demand comprising above-mentioned component and other yuan
Device, the present embodiment are not specifically limited this.For convenience of description, the present embodiment will protect circuit to include above-mentioned all members
It is shown exemplified by device in Fig. 3 or Fig. 4.
Battery cathode control loop protective device provided in this embodiment, by the cathode that switch unit is arranged on to battery
End, control unit control driving IC send driving voltage, which can be controlled more on and off switch unit
Go here and there the process discharged to load circuit of battery of high voltage and process that charging unit charges to the battery.In the charge and discharge of battery
In electric process protect circuit by with driving IC and switch unit connection, can not only stablize conducting switch unit voltage,
It plays a protective role to switch unit, passes through the shut-off of itself, control switch unit shut-off, to electricity also in charging unit reversal connection
Pond plays a protective role.The present embodiment solves the problems, such as that the battery of mostly string high voltage is difficult to control charge and discharge, by that will switch
Unit is placed on the negative pole end of battery so that driving IC can meet the mistake for controlling battery charging and discharging without excessively high driving voltage
Journey, so as to effectively reduce the cost of driving IC.And protection circuit setting can not only burning voltage, also to battery and switch
Unit plays a protective role, and avoids the damage of battery and switch unit, effectively reduces component cost.
Then, for battery except can power to load circuit, battery can also be to driving IC power supplies.Optionally, IC is driven
The anode of connection battery is additionally operable to, so that battery is powered to driving IC.
Specifically, connections of the IC by the anode with battery is driven, the voltage of battery can be got, can be converted into certainly
Operating voltage inside body can also be converted to driving voltage for output.The present embodiment does not limit this.
Finally, continuing with Fig. 3 or Fig. 4, to the specific side of the battery cathode control loop protective device in the present embodiment
Formula is described in detail.Optionally, the present embodiment battery cathode control loop protective device can also include：Current detecting list
Member.
Wherein, the first end of current detecting unit is used to connecting the negative pole end of battery, the second end of current detecting unit with
Switch unit connects, for obtaining size of current and current direction on the negative pole end of battery.
3rd end of current detecting unit and the input terminal of processing unit connect, for sending size of current to processing unit
And current direction.
Specifically, current detecting unit is by being arranged on the negative pole end of battery, can be conveniently and flexible when obtaining work
The size of current and current direction of battery.Wherein, current sensor can be used in current detecting unit in the present embodiment, can also be used
The circuit of other components composition, the present embodiment do not limit this.
Further, current detecting unit can not only detect the size of current and current direction of battery, facilitate personnel into
Size of current and current direction can also be sent to processing unit so that processing unit is according to size of current by row subsequent operation
With the working condition of current direction detection present battery, whether the charge and discharge process that battery can be such as detected according to size of current goes out
It is now abnormal, can also be charging process or discharge process according to circuit walking direction battery.
Fig. 5 is the structure diagram of battery component provided by the invention, as shown in figure 5, battery component 50 includes：Battery 51
With battery cathode control loop protective device 52 described above.
Wherein, the input terminal of battery cathode control loop protective device 52 is connected with the negative pole end of battery 51, and battery is just
Extreme 51 and battery cathode control loop protective device 52 output terminal for connecting load circuit or charging unit, battery cathode
The original state of control loop protective device 52 is off-state.
When battery cathode control loop protective device 52 turns on, so that battery 51 discharges to load circuit, alternatively, charging
Device charges to battery 51.
Battery component provided in an embodiment of the present invention includes battery cathode control loop protective device as described above, can
Above-described embodiment is performed, implements principle and technique effect, reference can be made to above method embodiment, the present embodiment is herein no longer
It repeats.
Fig. 6 is the structure diagram of unmanned plane provided by the invention, as shown in fig. 6, unmanned plane 60 includes fuselage 61, installing
In the battery 62 of fuselage, unmanned plane further includes：The battery cathode control loop protection as described above being installed on fuselage 61
Device 63.
Wherein, the input terminal of battery cathode control loop protective device 63 is connected with the negative pole end of battery 62, battery 62
Positive terminal and the output terminal of battery cathode control loop protective device 63 are used to connect load circuit or charging unit, battery cathode
The original state of control loop protective device 63 is off-state.
When battery cathode control loop protective device 63 turns on, so that battery 62 discharges to load circuit, alternatively, charging
Device charges to battery 62.
Unmanned plane provided in an embodiment of the present invention can be plant protection unmanned plane, the cruise that operation is protected applied to agriculture and forestry plant
Unmanned plane and mapping unmanned plane etc..The unmanned plane of these types is generally mounted with the heavy burden of constant weight, for example, plant protection nobody
Chance is equipped with the pesticide except pest and disease damage or the seed for sowing, and this unmanned plane then more needs the electricity of mostly string high voltage
Pond drives.Unmanned plane provided in an embodiment of the present invention uses battery cathode control loop protective device as described above, can
Above-described embodiment is performed, implements principle and technique effect, reference can be made to above method embodiment, the present embodiment is herein no longer
It repeats.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme.
Claims (18)
1. a kind of battery cathode control loop protective device, which is characterized in that including：Processing unit, drive integrated circult IC, open
Close unit and protection circuit；
Wherein, the first end of the switch unit is used to connect the negative pole end of battery, and the second end of the switch unit is used to connect
Load circuit or charging unit are connect, the output terminal of the processing unit is connected with the input terminal of the driving IC, the driving IC
The first output terminal be connected with the first input end of the protection circuit, the second output terminal of the driving IC and the protection are electric
The second input terminal connection on road, the first output terminal of the protection circuit are connected with the first control terminal of the switch unit, institute
The second output terminal for stating protection circuit is connected with the second control terminal of the switch unit；
The processing unit, for sending control signal to the driving IC, to control the driving IC to the protection circuit
Send the driving voltage of the control signal instruction；
The protection circuit for receiving the driving voltage that the driving IC is sent, controls the switching means conductive or shut-off,
So that the battery discharges to the load circuit or stops electric discharge, alternatively, so that the charging unit charges to the battery
Or stop charging.
2. battery cathode control loop protective device according to claim 1, which is characterized in that the switch unit bag
It includes：First switch module and second switch module；
Wherein, the control terminal of the first switch module is connected with the first output terminal of the protection circuit, the second switch
The control terminal of module is connected with the second output terminal of the protection circuit；
The protection circuit, for when receiving the driving voltage that the driving IC is sent, first to open described on or off
Close module and/or the second switch module.
3. battery cathode control loop protective device according to claim 2, which is characterized in that
The first end of the first switch module is used to connect the negative pole end of the battery, the second end of the first switch module
Be connected with the first end of the second switch module, the second end of the second switch module for connect the load circuit or
The charging unit.
4. battery cathode control loop protective device according to claim 2, which is characterized in that
The first end of the first end of the first switch module and the second switch module is all used to connect the negative of the battery
Extremely, the second end of the first switch module for connecting the load circuit, use by the second end of the second switch module
In the connection charging unit.
5. according to claim 2-4 any one of them battery cathode control loop protective devices, which is characterized in that described first
Switch module and the second switch module include：N-type Metal-oxide-semicondutor-field-effect transistor NMOS or insulated gate
Bipolar transistor IGBT.
6. battery cathode control loop protective device according to claim 2, which is characterized in that the protection circuit bag
It includes：3rd switch module, first resistor, diode and second resistance；
Wherein, the first end of the 3rd switch module is connected with the first output terminal of the driving IC, the 3rd switching molding
The control terminal of block is connected to ground, and the second end of the 3rd switch module is connected with the first end of the first resistor, and described
The second end of one resistance is connected with the anode of the diode, the cathode of the diode and the control of the second switch module
End connection；
The first end of the second resistance is connected with the second output terminal of the driving IC, the second end of the second resistance and institute
State the control terminal connection of first switch module；
The protection circuit for receiving the driving voltage that the driving IC is sent, controls the first switch module or described
Second switch module on or off, so that the battery discharges to the load circuit or stops electric discharge, alternatively, so that described
Charging unit charges to the battery or stops charging.
7. battery cathode control loop protective device according to claim 6, which is characterized in that the protection circuit, also
For in the charging unit reversal connection and the protection circuit shut-off, the second switch module being controlled to turn off, to protect
State battery.
8. battery cathode control loop protective device according to claim 7, which is characterized in that the protection circuit also wraps
It includes：3rd resistor；
Wherein, the first end of the 3rd resistor connects respectively with the anode of the second end of the first resistor and the diode
It connects, the cathode of the second end of the 3rd resistor respectively with the control terminal of the second switch module and the diode is connected.
9. according to claim 6-8 any one of them battery cathode control loop protective devices, which is characterized in that the protection
Circuit is additionally operable to when the second switch module turns on, and stablizes the protection circuit to the second switch module transfer
Voltage, to protect the second switch module.
10. battery cathode control loop protective device according to claim 9, which is characterized in that the protection circuit is also
Including：4th resistance；
Wherein, the first end of the 4th resistance is connected with the cathode of the diode, the second end of the 4th resistance and institute
State the second end connection of second switch module.
11. battery cathode control loop protective device according to claim 9, which is characterized in that the protection circuit is also
Including：Bi-directional voltage stabilizing diode；
Wherein, the first end of the bi-directional voltage stabilizing diode is connected with the cathode of the diode, the bi-directional voltage stabilizing diode
Second end be connected with the second end of the second switch module；
The protection circuit, in the load circuit normally connection and when the second switch module turns off, described in control
Voltage between the second end and control terminal of second switch module is predeterminated voltage, to protect the second switch module and described
Drive IC.
12. according to claim 6-8 any one of them battery cathode control loop protective devices, which is characterized in that the guarantor
Protection circuit is additionally operable to when the first switch module turns on, and stablizes the protection circuit to the first switch module transfer
Voltage, to protect the first switch module.
13. battery cathode control loop protective device according to claim 12, which is characterized in that the protection circuit is also
Including：5th resistance；
Wherein, the first end of the 5th resistance control with the second end of the second resistance and the first switch module respectively
End connection processed, the second end of the 5th resistance are connected with the first end of the first switch module.
14. battery cathode control loop protective device according to claim 6, which is characterized in that the 3rd switching molding
Block includes：P-type Metal-oxide-semicondutor-field-effect transistor PMOS or IGBT.
15. battery cathode control loop protective device according to claim 1, which is characterized in that the driving IC is also used
In the anode of connection battery, so that the battery is powered to the driving IC.
16. battery cathode control loop protective device according to claim 1, which is characterized in that further include：Current detecting
Unit；
Wherein, the first end of the current detecting unit is used to connect the negative pole end of the battery, the current detecting unit
Second end is connected with the switch unit, for obtaining size of current and current direction on the negative pole end of the battery；
3rd end of the current detecting unit is connected with the input terminal of the processing unit, for being sent to the processing unit
The size of current and the current direction.
17. a kind of battery component, which is characterized in that including：Battery and such as claim 1-16 any one of them battery cathode
Control loop protective device.
18. a kind of unmanned plane, including fuselage, the battery of the fuselage is installed in, which is characterized in that the unmanned plane further includes：
Be installed on the fuselage such as claim 1-16 any one of them battery cathode control loop protective devices.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810151418.0A CN108110868A (en) | 2018-02-14 | 2018-02-14 | Battery cathode control loop protective device, battery component and unmanned plane |
| PCT/CN2018/111731 WO2019157835A1 (en) | 2018-02-14 | 2018-10-24 | Battery negative electrode control loop protection device, battery assembly and unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810151418.0A CN108110868A (en) | 2018-02-14 | 2018-02-14 | Battery cathode control loop protective device, battery component and unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108110868A true CN108110868A (en) | 2018-06-01 |
Family
ID=62205889
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810151418.0A Pending CN108110868A (en) | 2018-02-14 | 2018-02-14 | Battery cathode control loop protective device, battery component and unmanned plane |
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| Country | Link |
|---|---|
| CN (1) | CN108110868A (en) |
| WO (1) | WO2019157835A1 (en) |
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| CN108790892A (en) * | 2018-06-20 | 2018-11-13 | 重庆明斯克电气有限公司 | A kind of charging monitoring managing device of electric vehicle |
| WO2019157835A1 (en) * | 2018-02-14 | 2019-08-22 | 深圳市道通智能航空技术有限公司 | Battery negative electrode control loop protection device, battery assembly and unmanned aerial vehicle |
| CN110350632A (en) * | 2019-08-20 | 2019-10-18 | 深圳市道通智能航空技术有限公司 | A kind of battery balanced self discharge circuit and unmanned plane |
| WO2020114497A1 (en) * | 2018-12-07 | 2020-06-11 | 宁德时代新能源科技股份有限公司 | Charging and discharging circuit |
| CN112319296A (en) * | 2020-10-13 | 2021-02-05 | 武汉蔚来能源有限公司 | Charging protection method and system and rechargeable battery |
| CN112398109A (en) * | 2019-08-13 | 2021-02-23 | 北京极智嘉科技有限公司 | Power supply loop, carrying equipment and power supply control method |
| CN113517726A (en) * | 2020-04-09 | 2021-10-19 | 宁德时代新能源科技股份有限公司 | Switch turn-off circuit |
| CN113561810A (en) * | 2021-07-28 | 2021-10-29 | 雅迪科技集团有限公司 | Charging port power-off protection device and electric vehicle |
| WO2022062532A1 (en) * | 2020-09-24 | 2022-03-31 | 苏州赛芯电子科技股份有限公司 | Battery protection circuit and lithium battery system |
| CN115051430A (en) * | 2022-06-06 | 2022-09-13 | 楚能新能源股份有限公司 | Be applied to charge-discharge branch mouth protection circuit of lithium cell |
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| WO2019157835A1 (en) * | 2018-02-14 | 2019-08-22 | 深圳市道通智能航空技术有限公司 | Battery negative electrode control loop protection device, battery assembly and unmanned aerial vehicle |
| CN108790892A (en) * | 2018-06-20 | 2018-11-13 | 重庆明斯克电气有限公司 | A kind of charging monitoring managing device of electric vehicle |
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| CN113517726A (en) * | 2020-04-09 | 2021-10-19 | 宁德时代新能源科技股份有限公司 | Switch turn-off circuit |
| WO2022062532A1 (en) * | 2020-09-24 | 2022-03-31 | 苏州赛芯电子科技股份有限公司 | Battery protection circuit and lithium battery system |
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| CN112319296B (en) * | 2020-10-13 | 2022-08-30 | 武汉蔚来能源有限公司 | Charging protection method and system and rechargeable battery |
| CN112319296A (en) * | 2020-10-13 | 2021-02-05 | 武汉蔚来能源有限公司 | Charging protection method and system and rechargeable battery |
| CN113561810A (en) * | 2021-07-28 | 2021-10-29 | 雅迪科技集团有限公司 | Charging port power-off protection device and electric vehicle |
| CN113561810B (en) * | 2021-07-28 | 2024-04-02 | 雅迪科技集团有限公司 | Charging port power-off protection device and electric vehicle |
| CN115051430A (en) * | 2022-06-06 | 2022-09-13 | 楚能新能源股份有限公司 | Be applied to charge-discharge branch mouth protection circuit of lithium cell |
| CN116191593A (en) * | 2022-12-23 | 2023-05-30 | 富满微电子集团股份有限公司 | Battery management circuit and chip |
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Application publication date: 20180601 |