CN209372938U - Detection circuit of battery voltage and induction cooker pot - Google Patents
Detection circuit of battery voltage and induction cooker pot Download PDFInfo
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- CN209372938U CN209372938U CN201822067977.1U CN201822067977U CN209372938U CN 209372938 U CN209372938 U CN 209372938U CN 201822067977 U CN201822067977 U CN 201822067977U CN 209372938 U CN209372938 U CN 209372938U
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- 238000001514 detection method Methods 0.000 title claims abstract description 71
- 230000006698 induction Effects 0.000 title abstract 2
- 239000004065 semiconductor Substances 0.000 claims description 32
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- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000003071 parasitic effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 239000013256 coordination polymer Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
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- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical group 0.000 description 1
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Abstract
The embodiment of the utility model provides a battery voltage's detection circuitry and electromagnetism stove pan. Wherein, battery voltage's detection circuitry is applied to the electromagnetism stove pan, includes: a controller and a voltage divider circuit; the voltage division circuit is electrically connected with a battery of the induction cooker pot and is grounded, and the controller is electrically connected with the voltage division circuit; the voltage division circuit is used for dividing the voltage of the battery and outputting the divided voltage to the controller; the controller is used for acquiring the divided voltage output by the voltage dividing circuit and detecting the voltage of the battery according to the divided voltage. The purpose of detecting the voltage of the battery is achieved, and therefore a user is reminded of charging the battery when the electric quantity of the battery is insufficient.
Description
Technical field
The utility model embodiment be related to electromagnetic oven circuit engineering more particularly to a kind of detection circuit of cell voltage and
Electromagnetic oven cooker.
Background technique
Electromagnetic oven is a kind of household electrical appliance for being commonly used in heating.Electromagnetic oven is at work, logical using high-frequency alternating current
Coil panel is crossed so that the cookware bottom being placed on electromagnetic oven generates vortex, to add to the cookware being arranged on electromagnetic oven
Heat.
Currently, the cookware being arranged on electromagnetic oven generally use essence control cookware, wherein in order to more easily use electromagnetic oven with
And make the functional diversities of essence control cookware, power device is provided in essence control cookware.Wherein, which includes: thermometric dress
It sets, display board, data transmission module etc..Meanwhile it being equipped with the rechargeable battery powered exclusively for the power device in essence control cookware,
To guarantee the normal work of power device.And when the electricity of battery is lower, it can not power for power device, at this time, it may be necessary to mention
User wake up for battery power supply.When therefore, it is necessary to understand the voltage of present battery how much.
Utility model content
The utility model embodiment provides the detection circuit and electromagnetic oven cooker of a kind of cell voltage, to detect electromagnetic oven pan
The voltage of battery in tool.
In a first aspect, the utility model embodiment provides a kind of detection circuit of cell voltage, comprising: be applied to electromagnetic oven
Cookware, the detection circuit include:
Controller and bleeder circuit；The bleeder circuit is electrically connected with the battery of the electromagnetic oven cooker, the controller
It is electrically connected with the bleeder circuit；
The bleeder circuit is divided for the voltage to the battery, and by the voltage output after partial pressure to described
Controller；
The controller, the voltage after partial pressure for obtaining bleeder circuit output, and according to the partial pressure after
The voltage of battery described in voltage detecting.
In some embodiments of the utility model, the bleeder circuit includes two sectional pressure elements；Described two partial pressures
Element series connection, and one of sectional pressure element is connected electrically between the battery and another sectional pressure element, another described point
Press element and the controller electrically connected and grounded；
Described two sectional pressure elements are respectively used to divide the voltage of the battery, and the voltage of described two sectional pressure elements it
With the voltage for being equal to the battery；
The controller, for obtaining the voltage of another sectional pressure element, and according to another described sectional pressure element
Voltage detecting described in battery voltage.
In some embodiments of the utility model, the sectional pressure element is resistance.
In some embodiments of the utility model, the resistance value of another sectional pressure element is less than the electricity of the controller
Resistance value.
In some embodiments of the utility model, the detection circuit further includes control circuit, the control circuit point
It is not electrically connected with the battery, the bleeder circuit, the controller；
The control circuit, for controlling power supply on and off of the battery to the bleeder circuit；
The controller, for controlling the control circuit, so that the control circuit controls the battery to described point
The power supply on and off of volt circuit.
In some embodiments of the utility model, the control circuit includes controlled member and resistance, the controllable member
Part is electrically connected with the battery, the bleeder circuit, the controller respectively, the resistance be connected electrically in the controlled member with
Between the controller and it is grounded；
The resistance, the voltage that the parasitic capacitance for discharging the controlled member both ends generates；
The controlled member, for controlling power supply on and off of the battery to the bleeder circuit；
The controller, for controlling the controlled member, so that the controlled member controls the battery to described point
The power supply on and off of volt circuit.
In some embodiments of the utility model, the controlled member is metal-oxide half field effect transistor (Metal-
Oxide-Semiconductor Field-Effect Transistor, metal-oxide-semiconductor)；
The controller, for exporting conductivity control signal or cut-off control signal to the metal-oxide-semiconductor；
The metal-oxide-semiconductor, for when detecting the conductivity control signal of the controller output, the metal-oxide-semiconductor to be connected, institute
The conducting for stating metal-oxide-semiconductor is conducted for controlling confession of the battery to the bleeder circuit；Detecting the controller output
Cut-off when controlling signal, metal-oxide-semiconductor cut-off, the cut-off of the metal-oxide-semiconductor is for controlling the battery to the bleeder circuit
Power supply cut-off.
In some embodiments of the utility model, the controller includes analog-to-digital conversion module, the analog-to-digital conversion mould
Block is electrically connected with the bleeder circuit；
The analog-to-digital conversion module, the voltage after partial pressure for obtaining the bleeder circuit output, and according to described point
The voltage of battery described in voltage detecting after pressure.
In some embodiments of the utility model, the control system includes comparator module, the comparator module
First end be electrically connected with the bleeder circuit, second end is for obtaining reference voltage, and third end is for exporting comparison signal；
The comparator module, the voltage after partial pressure for obtaining the bleeder circuit output by the first end,
And reference signal is obtained by the second end, and according to the voltage and the reference voltage after the partial pressure, pass through described the
Three-polar output comparison signal；Reference voltage when the second state is converted to by first state according to comparison signal, detects the electricity
The voltage in pond；
Wherein, the reference voltage continues to increase from low to high or persistently reduces from high to low.
Second aspect, the utility model embodiment provide a kind of electromagnetic oven cooker, comprising: the use of the new type embodiment first
The detection circuit and battery of the described in any item cell voltages of aspect；
The battery is electrically connected with the detection circuit of the cell voltage；
The detection circuit of the cell voltage is used to detect the voltage of the battery.
The utility model embodiment provides the detection circuit and electromagnetic oven cooker of a kind of cell voltage, in cell voltage
Controller and bleeder circuit are designed in detection circuit, and keeps the battery of bleeder circuit and electromagnetic oven cooker electrically connected and grounded, are controlled
Device processed is electrically connected with bleeder circuit, thus bleeder circuit can be made to divide the voltage of battery, makes to export to the electricity of controller
Pressure meets the ceiling voltage that controller can be born, and controller is according to the voltage of the voltage detecting battery after the partial pressure received.It is real
The purpose detected to cell voltage is showed, to remind user to charge the battery in battery capacity deficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment one provides；
Fig. 2 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment two provides；
Fig. 3 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment three provides；
Fig. 4 is the schematic diagram of the detection circuit for the cell voltage that the utility model embodiment four provides；
Fig. 5 is the schematic diagram of the detection circuit for the cell voltage that the utility model embodiment five provides；
Fig. 6 is the structural schematic diagram for the electromagnetic oven cooker that the utility model embodiment one provides.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Firstly the need of explanation, the description and claims of this application and term " first " in above-mentioned attached drawing,
The (if present)s such as " second ", " third ", " the 4th " are to be used to distinguish similar objects, without for describing specific sequence
Or precedence.Also, orientation described in the utility model embodiment is only the positional relationship shown in attached drawing, is not pair
Positional relationship is defined.
In addition, it is necessary to explanation, in the present invention unless specifically defined or limited otherwise, term " connection ",
" connected " etc. shall be understood in a broad sense, such as can be mechanical connection, be also possible to be electrically connected；It can be and be directly connected to, it can also be with
Indirectly connected through an intermediary, the connection inside two elements or the interaction relationship of two elements be can be, unless separately
Have and explicitly limit, for the ordinary skill in the art, can understand above-mentioned term in this reality as the case may be
With the concrete meaning in novel.
Fig. 1 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment one provides.Such as Fig. 1 institute
Show, the detection circuit of cell voltage is applied to electromagnetic oven cooker, which includes: controller 10 and bleeder circuit 20.
Bleeder circuit 20 and the battery 30 of electromagnetic oven cooker are electrically connected and grounded, and controller 10 is electrically connected with bleeder circuit 20
It connects.
Bleeder circuit 20 is divided for the voltage to battery 30, and by the voltage output after partial pressure to controller 10.
Controller 10, the voltage after partial pressure for obtaining the output of bleeder circuit 20, and according to the voltage detecting after partial pressure
The voltage of battery 30.
In the present embodiment, when detecting the voltage of battery 30, the controller 10 in detection circuit that utilizes battery voltage to
Detect the voltage of battery 30.However, since the voltage that controller 10 can bear has certain restrictions, and battery 30 is fully charged
When voltage be typically larger than the ceiling voltage that controller 10 can bear.Therefore, the setting point in the detection circuit of cell voltage
Volt circuit 20 is divided using voltage of the bleeder circuit 20 to battery 30.
In the detection circuit of cell voltage provided in this embodiment, bleeder circuit 20 is electrically connected with battery 30, and is grounded,
It is to be divided to the voltage of battery 30, also, by being electrically connected with controller 10, the voltage of the battery 30 after partial pressure is defeated
Out to controller 10.Wherein, the voltage of the battery 30 after partial pressure is less than or equal to the ceiling voltage that controller 10 can bear.
Controller 10 is after the voltage of the battery 30 after the partial pressure for getting the output of volt circuit 20, according to the battery after partial pressure
30 voltage can obtain the current voltage of battery 30, realize the purpose of detection 30 voltage of battery.It should be noted that this is practical
New embodiment to the type of controller 10 with no restrictions, for example, controller 10 can be micro-control unit
(Microcontroller Unit, MCU).
The present embodiment designs controller and bleeder circuit in the detection circuit of cell voltage, and makes bleeder circuit and electricity
The battery of magnetic furnace cookware is electrically connected and grounded, and controller is electrically connected with bleeder circuit, thus bleeder circuit can be made to the electricity of battery
Pressure is divided, enable to export and meet the ceiling voltage that controller is born to the voltage of controller, and controller is according to receiving
The voltage of voltage detecting battery after partial pressure.The purpose detected to cell voltage is realized, thus in battery capacity deficiency
When remind user charge the battery.
Optionally, Fig. 2 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment two provides.Such as
Shown in Fig. 2, on the basis of embodiment shown in Fig. 1, bleeder circuit 20 includes two sectional pressure elements.Preferably, sectional pressure element can
Think resistance.
Wherein, two sectional pressure element series connection, and one of sectional pressure element 21 is connected electrically in battery 30 and another partial pressure
Between element 22, another sectional pressure element 22 with it is electrically connected and grounded.
Two sectional pressure elements are respectively used to the voltage of partial pressure battery 30, and the sum of voltage of two sectional pressure elements is equal to battery
30 voltage.
Controller 10, for obtaining the voltage of another sectional pressure element 22, and according to the voltage of another sectional pressure element 22
Detect the voltage of battery 30.
In the present embodiment, bleeder circuit 20 is connected between battery 30 and ground by sectional pressure element 21 and sectional pressure element 22
The voltage of battery 30 is divided, i.e., one end of sectional pressure element 21 is electrically connected with battery 30, the other end and sectional pressure element 22
One end electrical connection, the other end ground connection of sectional pressure element 22.Wherein, the sum of the voltage of sectional pressure element 21 and the voltage of sectional pressure element 22
For the voltage of battery 30.
Controller 10 is connected electrically between sectional pressure element 21 and sectional pressure element 22, since sectional pressure element 22 is grounded, control
The available voltage to sectional pressure element 22 of device 10 processed obtains the voltage of battery 30 by the voltage of sectional pressure element 22.Wherein, it controls
The method for the voltage that device 10 processed obtains battery 30 according to the voltage of sectional pressure element 22 for example can be with are as follows: according to the electricity of sectional pressure element 22
The resistance value of pressure and sectional pressure element 22 obtains the electric current in bleeder circuit 10, since sectional pressure element 21 and sectional pressure element 22 are connected,
The voltage of battery 30 to be crossed according to the resistance value of sectional pressure element 21 and the resistance value of sectional pressure element 22.
It should be noted that voltage and control when the resistance value of sectional pressure element 21 and sectional pressure element 22 and battery 30 are fully charged
The ceiling voltage that device 10 processed can bear is related.It can be with furthermore, it is desirable to meet the resistance value of sectional pressure element 21 and sectional pressure element 22
Detect the requirement of voltage when battery 30 is fully charged.
Optionally, the resistance value of another sectional pressure element (i.e. sectional pressure element 22) is less than the resistance value of controller 10.
In the present embodiment, controller 10 is certain due to existing in controller 10 when obtaining the voltage on sectional pressure element 22
Internal resistance, internal resistance present in controller 10 is equivalent to resistance R0 and equivalent resistance R0 and is grounded.Also, in cell voltage
In detection circuit, equivalent resistance R0 is in parallel with sectional pressure element 22, therefore, on the sectional pressure element 22 for causing controller 10 to get
Virtual voltage on voltage and sectional pressure element 22 there are certain error, thus, pass through the voltage detecting electricity on the sectional pressure element 22
When the voltage in pond 30, it will lead between the voltage of the battery 30 detected and the voltage of actual battery 30 that there are errors.Therefore,
The resistance value of sectional pressure element 22 needs to be less than the resistance value of equivalent resistance R0, to keep sectional pressure element 22 in parallel with equivalent resistance R0
Resistance afterwards reduces the voltage and partial pressure member on the sectional pressure element 22 that controller 10 is got close to the resistance value of sectional pressure element 22
The error between virtual voltage on part 22 further reduces the error of the battery 30 detected.
Optionally, Fig. 3 is the structural schematic diagram of the detection circuit for the cell voltage that the utility model embodiment three provides.Such as
Shown in Fig. 3, on the basis of embodiment shown in Fig. 1, detection circuit further includes control circuit 40, control circuit 40 respectively with battery
30, bleeder circuit 20, controller 10 are electrically connected.
Control circuit 40, for controlling power supply on and off of the battery 30 to bleeder circuit 20.
10 controllers, for controlling control circuit 40, so that control circuit 40 controls confession of the battery 30 to bleeder circuit 20
It conducts or closes.
In the present embodiment, if detecting the voltage of battery 30 always, the electricity of battery 30 can be wasted, therefore consider
30 electricity of battery is saved, such as can be by setting 30 electricity of the adjacent time interval for detecting 30 voltage of battery twice or detection battery
The voltage of battery 30 is detected at the time of pressure.Therefore, control circuit 40 is set between battery 30 and bleeder circuit 20, passes through control
Circuit 40 processed controls the on and off of the circuit between battery 30 and bleeder circuit 20, that is, controls the detection circuit of cell voltage
It detects the voltage of battery 30 or does not detect the voltage of battery 30.Also, control circuit 40 is controlled by controller 10, for example,
In controller 10 at the time of setting detection 30 voltage of battery, when reaching the corresponding moment, control circuit 40 is controlled, control circuit is made
The conducting of circuit between 40 control batteries 30 and bleeder circuit 20 starts the voltage for detecting battery 30, after detection, terminates
Detection starts to detect again to until reaching detection moment next time.
The present embodiment by designing control circuit in the detection circuit of cell voltage, and utilizes controller control control
Circuit, realizes the purpose of discontinuity detection cell voltage, both can detecte the voltage of battery, if in turn avoiding examining always
Survey the voltage of battery, battery be just constantly in discharge condition and caused by battery capacity loss the problem of.
Optionally, as shown in figure 3, control circuit 40 include controlled member 41 and resistance R3, controlled member 41 respectively with electricity
Pond 30, bleeder circuit 20, controller 10 are electrically connected, and resistance R3 is connected electrically between controlled member 41 and controller 10 and is grounded.
Resistance R3, the voltage that the parasitic capacitance for discharging 41 both ends of controlled member generates.
Controlled member 41, for controlling power supply on and off of the battery 30 to bleeder circuit 20.
Controller 10, for controlling controlled member 41, so that controlled member 41 controls confession of the battery 30 to bleeder circuit 20
It conducts or closes.
In the present embodiment, controlled member 41 is connected between battery 30 and bleeder circuit 20, control battery 30 and partial pressure electricity
The on and off of circuit between road 20, the i.e. detection circuit of control cell voltage detect the voltage of battery 30 or do not detect electricity
The voltage in pond 30.Also, controlled member 41 is electrically connected with controller 10, and when controller 10 turns it on, controlled member 41 is controlled
The conducting of circuit between battery 30 and bleeder circuit 20 processed starts the voltage for detecting battery 30；When controller 10 is kept it turned off
When, controlled member 41 controls the closing of the circuit between battery 30 and bleeder circuit 20, terminate the detection of 30 voltage of battery, or
After detecting the voltage of battery 30, detection is ended automatically.
Wherein, in some electronic components, especially on some controlled members, usually there is parasitic capacitance, and parasitic capacitance
Circuit and electronic component can be damaged, therefore, it is necessary to eliminate parasitic capacitance.In this embodiment, 41 both ends of controlled member are deposited
Parasitic capacitance when the detection circuit of cell voltage is turned on and off, will do it charging and discharging, therefore, will affect battery
Voltage in the detection circuit of voltage, so that the error between the voltage of the battery detected 30 and its virtual voltage be made to become larger.
So accessing resistance R3 between controlled member 41 and controller 10, and it is grounded R3, discharges the parasitism at 41 both ends of controlled member
The resistance that capacitor generates, influence of the resistance for avoiding parasitic capacitance from generating to voltage in the detection circuit of cell voltage.
Optionally, controlled member 41 is metal-oxide-semiconductor.
Controller 10, for exporting conductivity control signal or cut-off control signal to metal-oxide-semiconductor.
Metal-oxide-semiconductor, for when detecting the conductivity control signal that controller 10 exports, metal-oxide-semiconductor to be connected, the conducting of metal-oxide-semiconductor
It is conducted for controlling confession of the battery 30 to bleeder circuit 20；When the cut-off for detecting that controller 10 exports controls signal, MOS
Pipe cut-off, the cut-off of metal-oxide-semiconductor are electrically turn off for controlling confession of the battery 30 to bleeder circuit 20.
In the present embodiment, metal-oxide-semiconductor is can be used in controlled member 41, wherein the control terminal of metal-oxide-semiconductor is connect with controller 10, is made
Obtaining controller 10 can control the on and off of metal-oxide-semiconductor.When the control terminal of metal-oxide-semiconductor receives the conducting control of the output of controller 10
When signal processed, metal-oxide-semiconductor conducting, then confession of the battery to bleeder circuit is conducted；When to receive controller 10 defeated for the control terminal of metal-oxide-semiconductor
When cut-off out controls signal, metal-oxide-semiconductor cut-off, then confession of the battery to bleeder circuit is electrically turn off.It should be noted that controller 10
Conductivity control signal and cut-off control signal for controlling MOS on and off is related with the type of metal-oxide-semiconductor.For example, working as MOS
When pipe is N-type Metal-oxide-semicondutor (N-Metal-Oxide-Semiconductor, NMOS tube), grid and control
Device 10 connects, according to the characteristic of NMOS, when controller 10 exports high level, and NMOS transistor conduction, when exporting low level, NMOS tube
Cut-off.When metal-oxide-semiconductor is p-type Metal-oxide-semicondutor (P-Metal-Oxide-Semiconductor, PNMOS pipe),
Grid is connect with controller 10, and according to the characteristic of PMOS, when controller 10 exports low level, PMOS tube conducting exports high electricity
Usually, PMOS tube is ended.
Optionally, controller 10 includes analog-to-digital conversion module 11, and analog-to-digital conversion module 11 is electrically connected with bleeder circuit 20.
Analog-to-digital conversion module 11, the voltage after partial pressure for obtaining the output of bleeder circuit 20, and according to the electricity after partial pressure
The voltage of pressure detection battery 30.
In the present embodiment, analog-to-digital conversion module 11 is set in controller 10, after the partial pressure that bleeder circuit 20 is exported
Voltage input is into analog-to-digital conversion module 11, and according to the analog-to-digital conversion of design rule, the sampling of analog-to-digital conversion module 11 is divided
Voltage after the partial pressure that circuit 20 exports, so that the voltage after the partial pressure exported according to bleeder circuit 20 obtains the electricity of battery 30
Pressure.Wherein, the design method of analog-to-digital conversion rule can refer to the prior art, and details are not described herein again.
Optionally, control system 10 includes comparator module 12,20 electricity of first end and bleeder circuit of comparator module 12
Connection, the second end of comparator module 12 compare letter for exporting for obtaining reference voltage, the third end of comparator module 12
Number.
Comparator module 12 for obtaining the voltage after the partial pressure that bleeder circuit 20 exports by first end, and passes through the
Two ends obtain reference voltage, and according to the voltage and reference voltage after partial pressure, pass through three-polar output comparison signal；According to comparing
Signal is converted to reference voltage when the second state by first state, detects the voltage of the battery.
Wherein, the reference voltage continues to increase from low to high or persistently reduces from high to low.
In the present embodiment, comparator module 12 is set in controller 10, bleeder circuit is compared by comparator module 12
20 output partial pressures after voltage and reference voltage size, and according to comparison result output it is corresponding with comparison result compared with letter
Number.By adjusting the size of reference voltage, the state of comparison signal can be changed, it is continuous from low-voltage to high voltage with reference voltage
It is illustrated for increase:
When reference voltage be less than bleeder circuit 20 export partial pressure after voltage when, comparison signal is first state, works as ginseng
When examining the voltage after voltage is greater than or equal to the partial pressure that bleeder circuit 20 exports, comparison signal is the second state.In reference voltage
When increasing continuously from low-voltage to high voltage, when comparison signal is converted to the second state by first state, illustrate reference voltage
By being less than the voltage after the voltage after the partial pressure that exports of bleeder circuit 20 is changed into the partial pressure exported greater than bleeder circuit 20.This
When, can choose the last one less than bleeder circuit 20 export partial pressure after voltage reference voltage or first be greater than or
Voltage after the partial pressure that the reference voltage of voltage after the partial pressure exported equal to bleeder circuit 20 is exported as bleeder circuit 20, and
The voltage of battery 30 is obtained according to the voltage.Wherein, comparison signal for example can be low and high level signal, and high level signal indicates
Reference voltage is less than the voltage after the partial pressure that bleeder circuit 20 exports, and low level signal indicates that reference voltage is greater than or equal to partial pressure
Voltage after the partial pressure that circuit 20 exports, on the contrary it can also.Wherein, it is voltage on 0V that low-voltage, which can be voltage, and high voltage is
Voltage when fully charged more than or equal to electromagnetism 30.
Below by taking controller 10 is MCU as an example, on the basis of Fig. 1-embodiment illustrated in fig. 4, the inspection of cell voltage is provided
Two kinds of specific implementations of slowdown monitoring circuit.
Please refer to Fig. 4.Fig. 4 is the schematic diagram of the detection circuit for the cell voltage that the utility model embodiment four provides.
As shown in figure 4, the detection circuit of cell voltage provided in this embodiment, controlled member 41 uses NMOS tube, partial pressure
Element 41 is resistance R1, and sectional pressure element 42 is resistance R2, and controller 10 uses MCU, and analog-to-digital conversion module 11 turns for simulation numeral
Parallel operation (Analog-to-Digital Converter, ADC).Wherein, the pin AD1 connection in one end and ADC of resistance R2,
The internal resistance of pin AD1 is equivalent to resistance R0, the pin IO1 connection in the grid and MCU of NMOS tube.It optionally, can be in MCU
Including other parts, it is not shown in Fig. 4.
In the present embodiment, MCU controls NMOS transistor conduction or cut-off by pin IO1, when pin IO1 is set as high level
When, NMOS transistor conduction, at this point, output is resistance to the voltage on the pin AD1 of ADC due to the partial pressure of resistance R1 and resistance R2
The upper voltage of R2 can collect the upper voltage of resistance R2 by ADC.Again due to the detection of cell voltage shown in Fig. 4
In circuit, the upper voltage of resistance R2 can be calculated by formula 1 and be obtained, therefore, by formula 1 can Extrapolation obtain battery 30
Voltage.Wherein, formula 1 are as follows:
Wherein, UR2For the upper voltage of resistance R2, U is the voltage of battery 30, and R1 is the resistance value of resistance R1, and R2 is resistance
The resistance value of R2.
Referring to FIG. 5, Fig. 5 is the schematic diagram of the detection circuit for the cell voltage that the utility model embodiment five provides.
As shown in figure 5, the detection circuit of cell voltage provided in this embodiment, controlled member 41 uses NMOS tube, partial pressure
Element 41 is resistance R1, and sectional pressure element 42 is resistance R2, and controller 10 uses MCU, and the first end of comparator module 12 is by drawing
One end connection of resistance R2, the voltage after receiving the partial pressure that bleeder circuit 20 exports, the internal resistance of pin CP1 are equivalent to electricity in foot CP
R0 is hindered, the second end of comparator module 12 obtains reference voltage Vref, the three-polar output comparison signal of comparator module 12.
Pin IO1 connection in the grid and MCU of NMOS tube.Optionally, it can also include other parts in MCU, be not shown in Fig. 5.
In the present embodiment, MCU controls NMOS transistor conduction or cut-off by pin IO1, when pin IO1 is set as high level
When, NMOS transistor conduction, at this point, due to the partial pressure of resistance R1 and resistance R2, the voltage of the first end input of comparator module 12 is
The upper voltage of resistance R2, makes reference voltage VrefIncrease continuously from low pressure to high pressure or continuously reduced from high pressure to low pressure, when than
When comparison signal compared with the three-polar output of device module 12 is changed into the second state by first state, before comparison signal is changed
Last time reference voltage VrefOr the reference voltage V after comparison signal transformationrefUpper voltage as resistance R2.Equally
, after getting the upper voltage of resistance R2, the voltage of battery 30 is obtained according to formula 1.
It should be noted that also available reference voltage, second end pass through pin CP to the first end of comparator module 12
One end of middle resistance R2 connects.
It should be noted that after having detected the voltage of battery 30, IO1 pin is had high level to set by MCU in Fig. 4 and Fig. 5
For low level, end NMOS tube, to terminate the voltage of detection battery 30.
According to Fig. 4 and Fig. 5 it is found that using common electronics member in the detection circuit of cell voltage provided by the utility model
Part achieves that the detection of 30 voltage of electromagnetism, and at low cost.
Fig. 6 is the structural schematic diagram for the electromagnetic oven cooker that the utility model embodiment one provides.As shown in fig. 6, electromagnetic oven
Cookware includes the detection circuit 100 and battery 30 of cell voltage shown in Fig. 1-Fig. 5 any embodiment.Optionally, electromagnetic oven pan
Tool can also include other component, be not shown in Fig. 6.
Wherein, battery 30 is electrically connected with the detection circuit 100 of cell voltage.
The detection circuit 100 of cell voltage is used to detect the voltage of battery 30.
In the present embodiment, the voltage of battery 30 is detected by the detection circuit 100 of cell voltage, battery 30 voltage compared with
When low, user is reminded to charge to battery 30, so that battery 30 is the power supply for electrical equipment in electromagnetic oven cooker.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of detection circuit of cell voltage, which is characterized in that be applied to electromagnetic oven cooker, the detection circuit includes:
Controller and bleeder circuit；The battery of the bleeder circuit and the electromagnetic oven cooker is electrically connected and grounded, the control
Device is electrically connected with the bleeder circuit；
The bleeder circuit is divided for the voltage to the battery, and gives the voltage output after partial pressure to the control
Device；
The controller, the voltage after partial pressure for obtaining the bleeder circuit output, and according to the voltage after the partial pressure
Detect the voltage of the battery.
2. the detection circuit of cell voltage according to claim 1, which is characterized in that the bleeder circuit includes two points
Press element；Described two sectional pressure element series connection, and one of sectional pressure element is connected electrically in the battery and another partial pressure member
Between part, another described sectional pressure element and the controller are electrically connected and grounded；
Described two sectional pressure elements are respectively used to divide the voltage of the battery, and the sum of voltage of described two sectional pressure elements etc.
In the voltage of the battery；
The controller, for obtaining the voltage of another sectional pressure element, and according to the electricity of another sectional pressure element
Pressure detects the voltage of the battery.
3. the detection circuit of cell voltage according to claim 2, which is characterized in that the sectional pressure element is resistance.
4. the detection circuit of cell voltage according to claim 2, which is characterized in that the resistance of another sectional pressure element
Value is less than the resistance value of the controller.
5. the detection circuit of cell voltage according to claim 1, which is characterized in that the detection circuit further includes control
Circuit, the control circuit are electrically connected with the battery, the bleeder circuit, the controller respectively；
The control circuit, for controlling power supply on and off of the battery to the bleeder circuit；
The controller, for controlling the control circuit, so that the control circuit controls the battery to the partial pressure electricity
The power supply on and off on road.
6. the detection circuit of cell voltage according to claim 5, which is characterized in that the control circuit includes controllable member
Part and resistance, the controlled member are electrically connected with the battery, the bleeder circuit, the controller respectively, the resistance electricity
It is connected between the controlled member and the controller and is grounded；
The resistance, the voltage that the parasitic capacitance for discharging the controlled member both ends generates；
The controlled member, for controlling power supply on and off of the battery to the bleeder circuit；
The controller, for controlling the controlled member, so that the controlled member controls the battery to the partial pressure electricity
The power supply on and off on road.
7. the detection circuit of cell voltage according to claim 6, which is characterized in that the controlled member is metal-oxide-semiconductor；
The controller, for exporting conductivity control signal or cut-off control signal to the metal-oxide-semiconductor；
The metal-oxide-semiconductor, for when detecting the conductivity control signal of the controller output, the metal-oxide-semiconductor conducting to be described
The conducting of metal-oxide-semiconductor is conducted for controlling confession of the battery to the bleeder circuit；Detecting the controller output
When cut-off control signal, the metal-oxide-semiconductor cut-off, the cut-off of the metal-oxide-semiconductor is for controlling the battery to the bleeder circuit
For being electrically turn off.
8. the detection circuit of cell voltage according to claim 1, which is characterized in that the controller includes analog-to-digital conversion
Module, the analog-to-digital conversion module are electrically connected with the bleeder circuit；
The analog-to-digital conversion module, the voltage after partial pressure for obtaining bleeder circuit output, and according to the partial pressure after
Voltage detecting described in battery voltage.
9. the detection circuit of cell voltage according to claim 1, which is characterized in that the controller includes comparator mould
Block, the first end of the comparator module are electrically connected with the bleeder circuit, and second end is used for obtaining reference voltage, third end
In output comparison signal；
The comparator module, the voltage after partial pressure for obtaining the bleeder circuit output by the first end, and lead to
It crosses the second end and obtains reference signal, and according to the voltage and the reference voltage after the partial pressure, pass through the third end
Export comparison signal；Reference voltage when the second state is converted to by first state according to comparison signal, detects the battery
Voltage；
Wherein, the reference voltage continues to increase from low to high or persistently reduces from high to low.
10. a kind of electromagnetic oven cooker characterized by comprising such as the detection of the described in any item cell voltages of claim 1-9
Circuit and battery；
The battery is electrically connected with the detection circuit of the cell voltage；
The detection circuit of the cell voltage is used to detect the voltage of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822067977.1U CN209372938U (en) | 2018-12-11 | 2018-12-11 | Detection circuit of battery voltage and induction cooker pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822067977.1U CN209372938U (en) | 2018-12-11 | 2018-12-11 | Detection circuit of battery voltage and induction cooker pot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372938U true CN209372938U (en) | 2019-09-10 |
Family
ID=67831927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822067977.1U Active CN209372938U (en) | 2018-12-11 | 2018-12-11 | Detection circuit of battery voltage and induction cooker pot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209372938U (en) |
-
2018
- 2018-12-11 CN CN201822067977.1U patent/CN209372938U/en active Active
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