CN110212611A - A kind of charge control method for food processor of accompanying - Google Patents
A kind of charge control method for food processor of accompanying Download PDFInfo
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- CN110212611A CN110212611A CN201910547283.4A CN201910547283A CN110212611A CN 110212611 A CN110212611 A CN 110212611A CN 201910547283 A CN201910547283 A CN 201910547283A CN 110212611 A CN110212611 A CN 110212611A
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Abstract
The embodiment of the invention discloses a kind of charge control method of food processor of accompanying, retinue food processor includes the battery pack that can charge, this method comprises: when charging for battery pack real-time detection battery pack charge parameter；Charge parameter includes: the single battery voltage in battery pack temperature, charge power supply input voltage, charge power supply input current and battery pack；Determine the condition that corresponding charge parameter is met；The condition is corresponding with charge parameter, comprising: temperature range, charge power supply input voltage threshold value, charge power supply input current threshold value I0 and single battery voltage threshold；The condition met according to corresponding charge parameter is different, adaptively adjusts the charged state of the battery.The identification of example scheme situations such as whether abnormal, single battery voltage is abnormal according to battery pack temperature situation and to input power adaptively adjusts charged state, realizes and guarantees that battery pack charges normal, protects cell safety and promotes battery life under the operating condition of complexity.
Description
Technical field
The present embodiments relate to charge control technology, the charge control method of espespecially a kind of food processor of accompanying.
Background technique
It is protected at present using the battery charge control of the retinue food processor of battery power supply mode (such as retinue soy bean milk making machine)
Shield has the following deficiencies:
1, such machine carry conveniently, due to by factors such as region, environment, seasons to battery pack operating ambient temperature
Obvious effect, existing machine do not have battery temperature detection control protection, influence service life and the safety of battery；
2, user is charged using the charge power supply of different output voltages, electric current to machine, if the two mismatches, existing machine
Device can not identify, influence the service life of battery and the reliability of machine controller；
3, the problems such as there are machine or short-circuit machine charging terminals in user's use process, existing machine can not identify, deposit
In security risk；
4, existing machine does not have the identification protecting of over-charging of battery over-discharge situation, influences service life and the safety of battery.
Summary of the invention
The embodiment of the invention provides a kind of charge control methods of food processor of accompanying, and equipment is enabled to charge
When according to battery pack temperature situation, and identification situations such as whether abnormal, single battery voltage abnormal to input power
Judge adaptively to adjust charged state, realizes and guarantee that battery pack is charged normal and protected under complicated work condition environment
Cell safety simultaneously promotes battery life, improves user experience effect.
In order to reach purpose of the embodiment of the present invention, the embodiment of the invention provides a kind of charging controls of food processor of accompanying
Method processed, the retinue food processor may include the battery pack that can be charged, the method may include:
When for battery pack charging, the charge parameter of battery pack described in real-time detection；The charge parameter include with
Descend any one or more: battery pack temperature T, charge power supply input voltage VIN, charge power supply input current I and the battery
Single battery voltage V in group；
Determine the condition that corresponding charge parameter is met；The condition is corresponding with the charge parameter, including following
It anticipates one or more: temperature range, charge power supply input voltage threshold value, charge power supply input current threshold value I0 and single battery electricity
Press threshold value；
The condition met according to corresponding charge parameter is different, adaptively adjusts the charged state of the battery.
In an exemplary embodiment of the present invention, when the charge parameter is the battery pack temperature T, the condition is
The temperature range；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When the battery pack temperature T meets the first preset temperature range, stops charging and enter dormant state；
When the battery pack temperature T meets the second preset temperature range, into preset low temperature charge-constrained mode；
When the battery pack temperature T meets third preset temperature range, into normal charge mode；
When the battery pack temperature T meets four preset temperature ranges, into preset high-temperature charging adjustment modes.
In an exemplary embodiment of the present invention, first preset temperature range may include: T < Tl or Th < T；Its
In, Tl is preset lowest temperature threshold value, and Th is preset temperature upper limit threshold value；
First preset temperature range includes: T < Tl or Th < T；Wherein, Tl is preset lowest temperature threshold value, and Th is
Preset temperature upper limit threshold value；
Second preset temperature range includes: Tl≤T≤Tm；Wherein, Tm is preset low temperature threshold；
The third preset temperature range includes: Tm < T < Th- △ T；Wherein, △ T is preset temperature gap；
4th preset temperature range includes: Th- △ T≤T≤Th.
In an exemplary embodiment of the present invention, when the charge parameter is the charge power supply input voltage VIN, institute
Stating condition is the charge power supply input voltage threshold value；The charge power supply input voltage threshold value includes: nominal input voltage value
The voltage value Vrmw of the voltage limiting diode TVS of the charging cable both ends parallel connection of V0 and the battery pack；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When the charge power supply input voltage VIN and the difference of the nominal input voltage value V0 are less than or equal to preset
It when difference threshold, determines that charge power supply is normal, opens charging and enable, into normal charge mode；
When the charge power supply input voltage VIN and the difference of the voltage value Vrmw of the TVS are less than or equal to the difference
It is worth threshold value, alternatively, determining charge power supply exception, charge closing is enabled, into dormant state when VIN≤Vl；Wherein, Vl is pre-
If low pressure threshold；
It as V0 < VIN < Vrmw, determines that charge power supply is normal, opens charging and enable, into charged state, and according to described
The size variation of charge power supply input voltage VIN adaptively adjusts charge mode.
In an exemplary embodiment of the present invention, one end of the charging cable of the battery pack and the retinue food processor
Main control unit input terminal be connected, the other end ground connection；
The TVS is in parallel with current-limiting resistance；The current-limiting resistance includes: the first current-limiting resistance being serially connected and the second limit
Leakage resistance；Wherein, the first end of first current resistor is connected with the input terminal of the main control unit, second end and described the
The first end of two current-limiting resistances is connected, the second end ground connection of second current-limiting resistance；
Filter capacitor is parallel on second current-limiting resistance；
The second end of first current-limiting resistance is also connected with the detection input and output I/O port of the main control unit；The IO
Mouth is used as modulus AD mouthfuls, for obtaining the detected value V2 of charging cable input voltage；
Wherein, VIN=(R1+R2) * V2/R2；R1 is the resistance value of first current-limiting resistance, and R2 is the second current limliting electricity
The resistance value of resistance.
In an exemplary embodiment of the present invention, described when the charge parameter is the charge power supply input current I
Condition is the charge power supply input current threshold value I0；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
As I > I0, charging current exception is determined, charge closing is enabled, into dormant state；
It as I≤I0, determines that charging current is normal, opens charging and enable, into charged state, and according to battery voltage
With the size of battery pack temperature and charge power supply input voltage, the big of the charge power supply input current I is filled in adaptive adjustment
It is small.
In an exemplary embodiment of the present invention, the method can also include: by pulse width modulation (PWM) signal
Minimum duty cycle driving switch pipe acquires the charging current of the battery pack in real time, and calculates the average value of the charging current
As the charge power supply input current I.
In an exemplary embodiment of the present invention, when the charge parameter is the single battery voltage V, the condition
For the single battery voltage threshold；The single battery voltage threshold may include: lower voltage limit threshold values VL and upper limit voltage
Threshold values VH；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When any single battery voltage V is less than or equal to the lower voltage limit threshold values VL, given using constant voltage charging method
Battery pack charging, if after charging preset duration t0 seconds, the single battery voltage V still less than or equal to it is described under ration the power supply
Pressure valve value VL determines that the single battery voltage V is abnormal, and charge closing enables and enters standby mode；
When any single battery voltage V is greater than the lower voltage limit threshold values VL, and is less than the upper limit voltage threshold values VH,
It is enabled to open charging, adjusts charging mould into normal charging condition, and according to the size adaptation of the single battery voltage V
Formula；
When any single battery voltage V is greater than or equal to the upper limit voltage threshold values VH, charge closing enables and enters
Standby mode.
In an exemplary embodiment of the present invention, the lowest temperature threshold value Tl can satisfy: 0 DEG C -3 DEG C；
The temperature upper limit threshold value Th can satisfy: 65 DEG C -75 DEG C；
The low temperature threshold Tm can satisfy: 7 DEG C -12 DEG C.
In an exemplary embodiment of the present invention, the lower voltage limit threshold values VL can satisfy: 2.6-2.9V；
The upper limit voltage threshold values VH can satisfy: 4.1-4.3V.
The beneficial effect of the embodiment of the present invention may include:
1, the retinue food processor of the embodiment of the present invention may include the battery pack that can be charged, and the method can
To include: the charge parameter of battery pack described in real-time detection when for battery pack charging；The charge parameter includes following
Any one or more: battery pack temperature T, charge power supply input voltage VIN, charge power supply input current I and the battery pack
In single battery voltage V；Determine the condition that corresponding charge parameter is met；The condition is corresponding with the charge parameter,
Include any of the following or a variety of: temperature range, charge power supply input voltage threshold value, charge power supply input current threshold value I0 and
Single battery voltage threshold；The condition met according to corresponding charge parameter is different, adaptively adjusts the charging shape of the battery
State.By the example scheme, enable to equipment in charging according to battery pack temperature situation, and to input power whether
The identification for situations such as whether abnormal, single battery voltage is abnormal judges adaptively to adjust charged state, realizes multiple
Guarantee that battery pack charges normal and protects cell safety and promotes battery life under miscellaneous work condition environment, improves user experience effect
Fruit.
2, in the embodiment of the present invention when the charge parameter is the battery pack temperature T, the condition is the temperature
Range；The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can wrap
It includes: when the battery pack temperature T meets the first preset temperature range, stopping charging and enter dormant state；When the battery pack
When temperature T meets the second preset temperature range, into preset low temperature charge-constrained mode；When the battery pack temperature T meets
When third preset temperature range, into normal charge mode；When the battery pack temperature T meets four preset temperature ranges,
Into preset high-temperature charging adjustment modes.By the example scheme, different state of temperatures is according to battery pack and is implemented
Protection control ensure that battery pack is crossing low temperature or crossing the stopping charge protection battery pack safety under high-temperature condition, further according to electricity
The temperature range difference adjustment charge mode that pond group is in is so that battery pack realizes that charging is normal, promotes battery and change
Kind user experience.
3, in the embodiment of the present invention when the charge parameter is the charge power supply input voltage VIN, the condition is
The charge power supply input voltage threshold value；The charge power supply input voltage threshold value includes: nominal input voltage value V0 and described
The voltage value Vrmw of the voltage limiting diode TVS of the charging cable both ends parallel connection of battery pack；The corresponding charge parameter of the basis is met
Condition it is different, the charged state for adaptively adjusting the battery may include: when the charge power supply input voltage VIN and institute
It when stating the difference of nominal input voltage value V0 less than or equal to preset difference threshold, determines that charge power supply is normal, opens charging
It is enabled, into normal charge mode；When the charge power supply input voltage VIN and the difference of the voltage value Vrmw of the TVS are small
In or be equal to the difference threshold, alternatively, when VIN≤Vl, determine charge power supply exception, charge closing is enabled, into suspend mode shape
State；Wherein, Vl is preset low pressure threshold；It as V0 < VIN < Vrmw, determines that charge power supply is normal, opens charging and enable, enter
Charged state, and charge mode is adaptively adjusted according to the size variation of the charge power supply input voltage VIN.The embodiment side
Case ensure that battery charging and machine are worked normally, mentioned by implementing protection control according to the size of charge power supply input voltage
It rises battery and improves user experience.
4, the master control list of one end of the charging cable of battery pack described in the embodiment of the present invention and the retinue food processor
The input terminal of member is connected, other end ground connection；The TVS is in parallel with current-limiting resistance；The current-limiting resistance includes: be serially connected
One current-limiting resistance and the second current-limiting resistance；Wherein, the input terminal of the first end of first current resistor and the main control unit
It is connected, second end is connected with the first end of second current-limiting resistance, the second end ground connection of second current-limiting resistance；Described
Filter capacitor is parallel on two current-limiting resistances；The second end of first current-limiting resistance is also inputted with the detection of the main control unit
I/O port is exported to be connected；The I/O port is as AD mouthfuls of modulus, for obtaining the detected value V2 of charging cable input voltage；Wherein, VIN=
(R1+R2)*V2/R2；R1 is the resistance value of first current-limiting resistance, and R2 is the resistance value of second current-limiting resistance.Pass through the reality
A scheme is applied, provides hardware foundation for reliable detection charge power supply input voltage.
5, in the embodiment of the present invention when the charge parameter is the charge power supply input current I, the condition is institute
State charge power supply input current threshold value I0；The condition that the corresponding charge parameter of the basis is met is different, described in adaptive adjustment
The charged state of battery may include: to determine charging current exception, charge closing is enabled, into dormant state as I > I0；When
It when I≤I0, determines that charging current is normal, opens charging and enable, into charged state, and according to battery voltage and battery pack temperature
The size of the charge power supply input current I is filled in the size of degree and charge power supply input voltage, adaptive adjustment.Pass through the reality
Apply a scheme, avoid since the input current of power supply is excessive, main control unit can not by adjust driving metal-oxide-semiconductor duty ratio come
The risk for adjusting the size of charging current, and charge circuit and battery being caused to be damaged.
6, it is adopted in real time in the embodiment of the present invention by the minimum duty cycle driving switch pipe of pulse width modulation (PWM) signal
Collect the charging current of the battery pack, and calculates the average value of the charging current as the charge power supply input current I.It is logical
The example scheme is crossed, high current pair when avoiding opening charging pressure-boosting control, and lead to the wink to charge circuit device and battery
When impact, achieve the purpose that protect device and cell safety service life.
7, in the embodiment of the present invention when the charge parameter is the single battery voltage V, the condition is the list
Economize on electricity battery voltage thresholds；The single battery voltage threshold may include: lower voltage limit threshold values VL and upper limit voltage threshold values VH；Institute
The condition difference met according to corresponding charge parameter is stated, the charged state for adaptively adjusting the battery may include: to work as to appoint
When one single battery voltage V is less than or equal to the lower voltage limit threshold values VL, filled using constant voltage charging method to the battery pack
Electricity, if after charging preset duration t0 second, the single battery voltage V still less than or equal to the lower voltage limit threshold values VL, really
The fixed single battery voltage V is abnormal, and charge closing enables and enters standby mode；When any single battery voltage V is greater than institute
When stating lower voltage limit threshold values VL, and being less than the upper limit voltage threshold values VH, opens charging and enable, into normal charging condition, and
Charge mode is adjusted according to the size adaptation of the single battery voltage V；When any single battery voltage V is greater than or equal to institute
When stating upper limit voltage threshold values VH, charge closing enables and enters standby mode.By the example scheme, solves single battery
The problem of brownout can not charge normal and single battery overtension lead to the risk overcharged, ensure that the peace of battery
The complete and service life, and improve user experience.
The other feature and advantage of the embodiment of the present invention will illustrate in the following description, also, partly from explanation
It is become apparent in book, or understand through the implementation of the invention.The purpose of the embodiment of the present invention and other advantages can pass through
Specifically noted structure is achieved and obtained in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide one for further understanding technical solution of the embodiment of the present invention, and constituting specification
Point, it is used to explain the present invention the technical solution of embodiment together with embodiments herein, does not constitute to the embodiment of the present invention
The limitation of technical solution.
Fig. 1 is the charge control method flow chart of the retinue food processor of the embodiment of the present invention；
Fig. 2 is the charge power supply input voltage detection circuit schematic diagram of the embodiment of the present invention；
Fig. 3 is the charge power supply input electric cur- rent measure circuit diagram of the embodiment of the present invention.
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing pair
The embodiment of the present invention is described in detail.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Embodiment one
The embodiment of the invention provides a kind of charge control method of food processor of accompanying, the retinue food processor
It may include the battery pack that can be charged, as shown in Figure 1, the method may include S101-S103:
S101, when for battery pack charging, the charge parameter of battery pack described in real-time detection；The charge parameter packet
Include it is following any one or more: battery pack temperature T, charge power supply input voltage VIN, charge power supply input current I and described
Single battery voltage V in battery pack；
S102, the condition that corresponding charge parameter is met is determined；The condition is corresponding with the charge parameter, including with
Descend any one or more: temperature range, charge power supply input voltage threshold value, charge power supply input current threshold value I0 and single-unit electricity
Battery voltage thresholds；
S103, the condition difference met according to corresponding charge parameter, adaptively adjust the charged state of the battery.
In an exemplary embodiment of the present invention, by the example scheme, enable to equipment in charging according to electricity
Pond group temperature conditions, and judged according to the identification for situations such as whether abnormal, single battery voltage abnormal to input power
Charged state is adaptively adjusted, realizes and guarantees that battery pack charges normal and protect battery under complicated work condition environment
Safety simultaneously promotes battery life, improves user experience effect.
Embodiment two
The embodiment on the basis of example 1, gives the temperature range for identifying that battery pack is in when battery pack charging
To carry out the control example scheme of corresponding charge protection.
In an exemplary embodiment of the present invention, when the charge parameter is the battery pack temperature T, the condition is
The temperature range；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When the battery pack temperature T meets the first preset temperature range, stops charging and enter dormant state；
When the battery pack temperature T meets the second preset temperature range, into preset low temperature charge-constrained mode；
When the battery pack temperature T meets third preset temperature range, into normal charge mode；
When the battery pack temperature T meets four preset temperature ranges, into preset high-temperature charging adjustment modes.
In an exemplary embodiment of the present invention, first preset temperature range includes: T < Tl or Th < T；Wherein, Tl
For preset lowest temperature threshold value, Th is preset temperature upper limit threshold value；
Second preset temperature range includes: Tl≤T≤Tm；Wherein, Tm is preset low temperature threshold；
The third preset temperature range includes: Tm < T < Th- △ T；Wherein, △ T is preset temperature gap；
4th preset temperature range includes: Th- △ T≤T≤Th.
In an exemplary embodiment of the present invention, negative temperature coefficient NTC temperature sensor can be placed on the battery pack, led to
It crosses plastic packaging to fix NTC temperature sensor and battery, NTC temperature sensor can be bonded closely with battery, and it is accurate in real time to realize
Ground detects the temperature of battery pack.
In an exemplary embodiment of the present invention, the temperature upper limit threshold values Th of battery pack, low temperature threshold values Tm can be set, temperature
Lower limit threshold values Tl is spent, the relationship of each threshold temperature can be Th > Tm > Tl；System (the charge control for food processor of accompanying
System) charging modes -- constant-current charge -- the constant-voltage charge three phases that may include trickle charge.
In an exemplary embodiment of the present invention, it may be at dormant state when system does not work, charge when user connects
When line, the middle fracture of main control unit detects that external interrupt, system are waken up, and system charging is enabled to be in close state, system
Battery pack temperature T is detected first.
In an exemplary embodiment of the present invention, system can be with t seconds sample temperature n times of time interval, and according to detection
Battery pack average temperature value T0 is calculated in value, and (i.e. by T0 as battery pack temperature T), system can be according to the battery detected
Group average temperature value T0 is compared judgement protection with the battery pack temperature threshold values of setting:
As T0 < Tl, system identification battery pack temperature is lower than lower limit temperature, enabled closing of charging, and user is reminded to charge
Abnormal (for example, passing through human-computer interaction interface display alarm), system enters dormant state；
As Tl≤T0≤Tm, system judges that battery pack is in low-temperature condition, and charge enabled opening, charges and adjusts into low temperature
Integral pattern；
As Tm < T0 < Th, system charging is enabled to be opened, and system enters normal charging condition；
As T0 > Th, system identification battery pack temperature is higher than ceiling temperature, enabled closing of charging, and user is reminded to charge
Abnormal, system enters dormant state.
In an exemplary embodiment of the present invention, since rechargeable machine is easy to carry so that the work condition environment used is more multiple
It is miscellaneous, such as switched under outdoor charging, hot conditions after continuous slurrying in the charging of summer vehicle-mounted charge, winter makes outdoor, winter room
There are the phenomenon presence that battery pack temperature is too high or too low when charging (for portable food processing machine).Pass through
Real-time detection battery temperature, system identification simultaneously judge the state of temperature that battery pack is in, and are in different temperature according to battery pack
State implements protection control, guarantees that battery pack is crossing low temperature or crossing the stopping charging under high-temperature condition, protection battery pack safety, then
The temperature range difference adjustment charge mode being according to battery pack uses the longevity so that battery pack realizes that charging is normal, promotes battery
Life and improvement user experience.
Embodiment three
The embodiment is on the basis of embodiment one or two, identification charge power supply input electricity when giving the charging of machine battery
It presses to carry out the control example scheme of corresponding charge protection.
In an exemplary embodiment of the present invention, when the charge parameter is the charge power supply input voltage VIN, institute
Stating condition is the charge power supply input voltage threshold value；The charge power supply input voltage threshold value includes: nominal input voltage value
The voltage value Vrmw of the voltage limiting diode TVS of the charging cable both ends parallel connection of V0 and the battery pack；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When the charge power supply input voltage VIN and the difference of the nominal input voltage value V0 are less than or equal to preset
It when difference threshold, determines that charge power supply is normal, opens charging and enable, into normal charge mode；
When the charge power supply input voltage VIN and the difference of the voltage value Vrmw of the TVS are less than or equal to the difference
It is worth threshold value, alternatively, determining charge power supply exception, charge closing is enabled, into dormant state when VIN≤Vl；Wherein, Vl is pre-
If low pressure threshold；
It as V0 < VIN < Vrmw, determines that charge power supply is normal, opens charging and enable, into charged state, and according to described
The size variation of charge power supply input voltage VIN adaptively adjusts charge mode.
In an exemplary embodiment of the present invention, the detection circuit embodiment of charge power supply input voltage is shown below.
In an exemplary embodiment of the present invention, as shown in Fig. 2, one end of the charging cable of the battery pack and the retinue
The input terminal VIN_DC of the main control unit of food processor is connected, other end ground connection；
The TVS (D1) is in parallel with current-limiting resistance；The current-limiting resistance includes: 1 He of the first current-limiting resistance being serially connected
Second current-limiting resistance 2；Wherein, the first end of first current resistor 1 is connected with the input terminal of the main control unit, second end
It is connected with the first end of second current-limiting resistance 2, the second end ground connection of second current-limiting resistance 2；
Filter capacitor C1 is parallel on second current-limiting resistance 2；
The second end of first current-limiting resistance is also connected with the detection input and output I/O port IO_IN of the main control unit；
The I/O port IO_IN is as AD mouthfuls of modulus, for obtaining the detected value V2 of charging cable input voltage；
Wherein, VIN=(R1+R2) * V2/R2；R1 is the resistance value of first current-limiting resistance 1, and R2 is second current limliting
The resistance value of resistance 2.
In an exemplary embodiment of the present invention, the positive and negative polarities of charging cable are separately connected the input terminal VIN_ of main control unit
DC and ground GND terminates TVS pipe D1, and the charging being made of 1,2 and C1 in the input terminal VIN_DC and GND two of main control unit
Line plug-in detection circuit limits charging cable input voltage by terminating TVS pipe in charging cable two, protects main control unit (such as master
Control chip).
In an exemplary embodiment of the present invention, when system does not work in a dormant state, when user connects charging cable,
The I/O port IO_IN of main control unit detects that external interrupt, system are waken up, and the I/O port IO_IN of main control unit is switched by middle fracture
For AD mouthfuls of detection charging cable input voltage value V to get arrive charging cable input voltage VIN _ DC=(R1+R2) * V/R2.
In an exemplary embodiment of the present invention, the nominal input voltage value of default can be V0, default
The low pressure threshold values of input can be Vl, TVS pipe operating voltage can be Vrmw, system is done according to the input voltage value of detection to be sentenced
Disconnected protection:
As VIN (end VIN_DC voltage) ≈ VO, determining that charging cable access power supply is normal, system charging is enabled to open, into
Enter normal charging condition；
As VIN ≈ Vrmw, determine that the power input voltage of charging cable connection is excessively high, system is limited by TVS pipe and inputted
Voltage, system judge that charging cable accesses abnormity of power supply, and enabled closing of charging can be charged different by interface UI display reminding user
Often, system enters dormant state；
As V0 < VIN < Vrmw, determine input voltage it is higher, system judge charging cable access power supply be it is normal, system is filled
Electricity is enabled to be opened, and into normal charging condition, system can do the adaptive adjustment control of charging according to input voltage；
As VIN≤Vl, the factors such as the judgement charging cable short-circuit of terminals or charging cable are reversed cause charging cable access power supply different
Often, system charging is enabled closes, and can be charged by UI display reminding user abnormal, system enters dormant state.
In an exemplary embodiment of the present invention, since rechargeable machine generallys use USB (UniversalSerial
Bus universal serial bus) charging cable, the power supply adaptor model that user uses is different, and there are the voltage of input power differences, separately
Situations such as outer charging cable positive and negative anodes are reversed or user's cleaning robot causes positive and negative anodes short circuit or charging terminal to stain short circuit exist
Input voltage is abnormal, by eliminating electrostatic, input voltage excessively high the problem of causing main control chip to damage in input termination TVS pipe,
By identifying the state of input voltage in input termination charging cable plug-in detection circuit, protection is implemented by the size of input voltage
Control, it is ensured that battery charging and machine work normally, improve battery and improve user experience.
Example IV
The embodiment identifies charge power supply input current when giving battery charging on the basis of above-mentioned any embodiment
Implement the control example scheme of protection.
In an exemplary embodiment of the present invention, described when the charge parameter is the charge power supply input current I
Condition is the charge power supply input current threshold value I0；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
As I > I0, charging current exception is determined, charge closing is enabled, into dormant state；
It as I≤I0, determines that charging current is normal, opens charging and enable, into charged state, and according to battery voltage
With the size of battery pack temperature and charge power supply input voltage, the big of the charge power supply input current I is filled in adaptive adjustment
It is small.
In an exemplary embodiment of the present invention, the method can also include: by pulse width modulation (PWM) signal
Minimum duty cycle driving switch pipe acquires the charging current of the battery pack in real time, and calculates the average value of the charging current
As the charge power supply input current I.
In an exemplary embodiment of the present invention, as shown in figure 3, the detection circuit for giving charge power supply input current is real
Apply example.The anode of charging cable can pass through the positive BAT+ for making can control and being connected to battery pack after charging pressure-boosting control again that charges；
The cathode of charging cable connects GND, the series current sampling resistor R4 between the cathode BAT- and GND of battery pack, the electricity of main control unit
Stream sample port ADC_IN meets the cathode BAT- in battery pack, and sample circuit connects RC filter circuit (for example, being made of R3 and C2)
It is filtered.
In an exemplary embodiment of the present invention, when system detection battery pack temperature, charging cable input voltage and battery
Voltage is normal, and system, which opens charging, to be made to can control and open charging pressure-boosting control, system output pulse width modulation (PWM) signal
Minimum duty cycle drives metal-oxide-semiconductor (metal metal- oxide oxide- semiconductor semiconductor field effect transistor) work
Make N seconds, system real-time sampling charging current, average current value I and default charging current threshold values I0 is calculated and is compared
Compared with judgement:
As I > I0, determine that the super upper limit of the input current of charging cable, system can not adjust control, then be determined as charging current
Abnormal, system charging is enabled to close, and UI display reminding user charging is abnormal, and system enters dormant state；
As I≤I0, system judge the input current of charging cable be it is normal, system charging is enabled to open, and system enters just
Normal charged state can adjust output PWM letter according to cell voltage and battery temperature situation and charging cable input voltage size
Number duty ratio driving metal-oxide-semiconductor work come realize charging current adjustment control.
In an exemplary embodiment of the present invention, since rechargeable machine uses USB charging cable, the power supply that user uses is suitable
Orchestration model is different, and there are the electric current of input power differences, avoids the input current due to power supply excessive, master control can not pass through tune
Section drives the duty ratio of metal-oxide-semiconductor to adjust the size of charging current, and the risk for causing controller circuit and battery to be damaged.Master control
In such a way that the minimum duty cycle of pwm signal drives metal-oxide-semiconductor to sample charging current, when avoiding opening charging pressure-boosting control
High current pair, and lead to the temporary impact to charge circuit device and battery, protect device and cell safety service life.
Embodiment five
The embodiment on the basis of above-mentioned any embodiment, implemented when giving battery charging by identification single battery voltage
The control example scheme of protection.
In an exemplary embodiment of the present invention, when the charge parameter is the single battery voltage V, the condition
For the single battery voltage threshold；The single battery voltage threshold may include: lower voltage limit threshold values VL and upper limit voltage
Threshold values VH.
In an exemplary embodiment of the present invention, lower voltage limit threshold values VL and the battery charging of battery charging can be set
Upper limit voltage threshold values VH.System starts before charging to battery pack, can with it is electric with the single-unit of t1 second sampling battery groups of time interval
Cell voltage N1 times, and calculate the average voltage level of single battery, system is by the voltage of the average voltage level of acquisition and default
Threshold values is compared judgement.
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery can be with
Include:
When any single battery voltage V is less than or equal to the lower voltage limit threshold values VL, given using constant voltage charging method
Battery pack charging, if after charging preset duration t0 seconds, the single battery voltage V still less than or equal to it is described under ration the power supply
Pressure valve value VL determines that the single battery voltage V is abnormal, and charge closing enables and enters standby mode；
When any single battery voltage V is greater than the lower voltage limit threshold values VL, and is less than the upper limit voltage threshold values VH,
It is enabled to open charging, adjusts charging mould into normal charging condition, and according to the size adaptation of the single battery voltage V
Formula；
When any single battery voltage V is greater than or equal to the upper limit voltage threshold values VH, charge closing enables and enters
Standby mode.
In an exemplary embodiment of the present invention, when any single battery voltage is lower than VL, system can use constant pressure
Charging modes charge to battery pack, gradually the activity of activated batteries battery core, if after charging time t0 second, single battery voltage is also
When lower than VL, system can prompt user's cell voltage abnormal, and charge closing makes can control and enters standby mode；When any list
When the cell voltage that economizes on electricity is greater than or equal to VH, it can make can control with charge closing and enter standby mode.
In an exemplary embodiment of the present invention, identification single battery voltage is implemented to protect when system is charged by machine battery
Shield control, solves the problems, such as that single battery brownout can not charge normal and single battery overtension causes to overcharge
Risk, ensure that safety and the service life of battery, and improve user experience.
Embodiment six
The embodiment gives parameter setting example scheme on the basis of above-mentioned any embodiment.
In an exemplary embodiment of the present invention, the lowest temperature threshold value Tl can satisfy: 0 DEG C -3 DEG C；For example, can be with
It is selected as 0 DEG C, is specifically referred to depending on battery size specification；
The temperature upper limit threshold value Th can satisfy: 65 DEG C -75 DEG C；For example, can choose is 70 DEG C, specifically it is referred to
Depending on battery size specification；
The low temperature threshold Tm can satisfy: 7 DEG C -12 DEG C；For example, can choose is 100 DEG C, it is specifically referred to battery
Depending on model specification.
In an exemplary embodiment of the present invention, temperature sampling time interval t can be 0.5 second before charging, and guarantee sampling
Accuracy.It is 10 times that temperature sampling times N, which can choose, before charging, and guarantees that the time sampled cannot be too long and influence charging is total
Time.
In an exemplary embodiment of the present invention, the lower voltage limit threshold values VL can satisfy: 2.6-2.9V；For example, can
It, specifically can be with reference battery model parameter to be selected as 2.75V；
The upper limit voltage threshold values VH can satisfy: 4.1-4.3V；For example, can choose as 4.25V, can specifically refer to
Battery size parameter.
In an exemplary embodiment of the present invention, it is 1 second that battery voltage sampling time interval t1, which can choose,；Continuous sampling
It is 5 times that times N 1, which can choose,；It is 900 seconds that charging time t0, which can choose,.
In an exemplary embodiment of the present invention, by the setting of system parameter, the reliable of charging abnormal protection is realized
Property, it ensure that battery and service life of a machine, improve user experience.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or its
His memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other
Magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.This
Outside, known to a person of ordinary skill in the art to be, communication media generally comprises computer readable instructions, data structure, program mould
Other data in the modulated data signal of block or such as carrier wave or other transmission mechanisms etc, and may include any information
Delivery media.
Claims (10)
1. a kind of charge control method for food processor of accompanying, which is characterized in that the retinue food processor includes can
The battery pack of charging, which comprises
When for battery pack charging, the charge parameter of battery pack described in real-time detection；The charge parameter includes following
It anticipates one or more: in battery pack temperature T, charge power supply input voltage VIN, charge power supply input current I and the battery pack
Single battery voltage V；
Determine the condition that corresponding charge parameter is met；The condition is corresponding with the charge parameter, including following any one
Kind is a variety of: temperature range, charge power supply input voltage threshold value, charge power supply input current threshold value I0 and single battery voltage threshold
Value；
The condition met according to corresponding charge parameter is different, adaptively adjusts the charged state of the battery.
2. the charge control method of retinue food processor according to claim 1, which is characterized in that when the charging is joined
When number is the battery pack temperature T, the condition is the temperature range；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery includes:
When the battery pack temperature T meets the first preset temperature range, stops charging and enter dormant state；
When the battery pack temperature T meets the second preset temperature range, into preset low temperature charge-constrained mode；
When the battery pack temperature T meets third preset temperature range, into normal charge mode；
When the battery pack temperature T meets four preset temperature ranges, into preset high-temperature charging adjustment modes.
3. the charge control method of retinue food processor according to claim 2, which is characterized in that
First preset temperature range includes: T < Tl or Th < T；Wherein, Tl is preset lowest temperature threshold value, and Th is default
Temperature upper limit threshold value；
Second preset temperature range includes: Tl≤T≤Tm；Wherein, Tm is preset low temperature threshold；
The third preset temperature range includes: Tm < T < Th- △ T；Wherein, △ T is preset temperature gap；
4th preset temperature range includes: Th- △ T≤T≤Th.
4. the charge control method of retinue food processor according to claim 1, which is characterized in that when the charging is joined
When number is the charge power supply input voltage VIN, the condition is the charge power supply input voltage threshold value；The charge power supply
Input voltage threshold value includes: the voltage limiting diode TVS of the charging cable both ends parallel connection of nominal input voltage value V0 and the battery pack
Voltage value Vrmw；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery includes:
When the charge power supply input voltage VIN and the difference of the nominal input voltage value V0 are less than or equal to preset difference
It when threshold value, determines that charge power supply is normal, opens charging and enable, into normal charge mode；
When the charge power supply input voltage VIN and the difference of the voltage value Vrmw of the TVS are less than or equal to the difference threshold
Value, alternatively, determining charge power supply exception, charge closing is enabled, into dormant state when VIN≤Vl；Wherein, Vl is preset
Low pressure threshold；
It as V0 < VIN < Vrmw, determines that charge power supply is normal, opens charging and enable, into charged state, and according to the charging
The size variation of power input voltage VIN adaptively adjusts charge mode.
5. the charge control method of retinue food processor according to claim 4, which is characterized in that the battery pack
One end of charging cable is connected with the input terminal of the main control unit of the retinue food processor, other end ground connection；
The TVS is in parallel with current-limiting resistance；The current-limiting resistance includes: the first current-limiting resistance being serially connected and the second current limliting electricity
Resistance；Wherein, the first end of first current-limiting resistance is connected with the input terminal of the main control unit, second end and second limit
The first end of leakage resistance is connected, the second end ground connection of second current-limiting resistance；
Filter capacitor is parallel on second current-limiting resistance；
The second end of first current-limiting resistance is also connected with the detection input and output I/O port of the main control unit；The I/O port is made
It is AD mouthfuls of modulus, for obtaining the detected value V2 of charging cable input voltage；
Wherein, VIN=(R1+R2) * V2/R2；R1 is the resistance value of first current-limiting resistance, and R2 is second current-limiting resistance
Resistance value.
6. the charge control method of retinue food processor according to claim 1, which is characterized in that when the charging is joined
When number is the charge power supply input current I, the condition is the charge power supply input current threshold value I0；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery includes:
As I > I0, charging current exception is determined, charge closing is enabled, into dormant state；
It as I≤I0, determines that charging current is normal, opens charging and enable, into charged state, and according to battery voltage and electricity
The size of the charge power supply input current I is filled in the size of pond group temperature and charge power supply input voltage, adaptive adjustment.
7. the charge control method of retinue food processor according to claim 6, which is characterized in that the method is also wrapped
It includes: acquiring the charging electricity of the battery pack in real time by the minimum duty cycle driving switch pipe of pulse width modulation (PWM) signal
Stream, and the average value of the charging current is calculated as the charge power supply input current I.
8. the charge control method of retinue food processor according to claim 1, which is characterized in that when the charging is joined
When number is the single battery voltage V, the condition is the single battery voltage threshold；The single battery voltage threshold packet
It includes: lower voltage limit threshold values VL and upper limit voltage threshold values VH；
The condition that the corresponding charge parameter of the basis is met is different, and the charged state for adaptively adjusting the battery includes:
When any single battery voltage V is less than or equal to the lower voltage limit threshold values VL, using constant voltage charging method to described
Battery pack charging, if after charging preset duration t0 second, the single battery voltage V still less than or equal to the lower voltage limit valve
Value VL determines that the single battery voltage V is abnormal, and charge closing enables and enters standby mode；
When any single battery voltage V is greater than the lower voltage limit threshold values VL, and is less than the upper limit voltage threshold values VH, open
Charging is enabled, adjusts charge mode into normal charging condition, and according to the size adaptation of the single battery voltage V；
When any single battery voltage V is greater than or equal to the upper limit voltage threshold values VH, charge closing enables and enters standby
Mode.
9. the charge control method of retinue food processor according to claim 3, which is characterized in that
The lowest temperature threshold value Tl meets: 0 DEG C -3 DEG C；
The temperature upper limit threshold value Th meets: 65 DEG C -75 DEG C；
The low temperature threshold Tm meets: 7 DEG C -12 DEG C.
10. the charge control method of retinue food processor according to claim 3, which is characterized in that
The lower voltage limit threshold values VL meets: 2.6-2.9V；
The upper limit voltage threshold values VH meets: 4.1-4.3V.
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| CN113141032A (en) * | 2020-01-18 | 2021-07-20 | 九阳股份有限公司 | Portable food processor |
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Application publication date: 20190906 |