CN205911778U - Series battery's equalizing charge circuit and device thereof - Google Patents
Series battery's equalizing charge circuit and device thereof Download PDFInfo
- Publication number
- CN205911778U CN205911778U CN201620719306.7U CN201620719306U CN205911778U CN 205911778 U CN205911778 U CN 205911778U CN 201620719306 U CN201620719306 U CN 201620719306U CN 205911778 U CN205911778 U CN 205911778U
- Authority
- CN
- China
- Prior art keywords
- battery
- voltage
- unit
- control unit
- cells
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the utility model discloses series battery's equalizing charge circuit and device thereof, the circuit includes: the control unit, switch element, the detecting unit, voltage detection unit and switch unit, the voltage at power component both ends is listened to the detecting unit's detector, voltage detection unit detects the voltage of every battery in the group battery, the charging path's between power supply unit and the group battery charging current is calculated out to the voltameter at the power component both ends that the control unit listened according to the detector, when charging current is greater than the presupposition current value or the voltage of every battery of detecting of voltage detection unit when being greater than presupposition voltage value, then sends and breaks off control signal, the switch element is used for the charging path according to disconnection control signal, between disconnection power supply unit and the group battery, the switch unit switches the quantity of the battery that goes on in the group battery charging. The utility model discloses series battery's equalizing charge circuit and device thereof simple structure, cost are lower to reliability and security are high.
Description
Technical field
This utility model is related to charging technique field, particularly to a kind of equalization charging circuit of series-connected cell and its dress
Put.
Background technology
At present, the application of energy-storage battery is more and more extensive, this generates and is filled for these multiple series connection accumulation batteries
The problem of electricity.The set of cells of multiple series-connected cell compositions is mostly charged using serial connection charge circuit, and existing series connection
Charging circuit is typically directed to the design of two or three single series-connected cells.It is at least there is problems in that first
First, same charging circuit can not meet two, three, the switching use of even more series-connected cell quantity, cannot protect
Card two, three, even more series-connected cells can share same charging circuit.In addition, for general consumer electronics
For product, existing charging circuit configuration is also complex, and cost is also higher.Therefore design that a kind of structure is simple, cost relatively
Low, reliability and the charging circuit of safety, are current problem demanding prompt solutions.
Utility model content
This utility model provides a kind of equalization charging circuit of series-connected cell and its device, and its structure is simple, cost is relatively low,
Reliability and safe.
Described technical scheme is as follows:
This utility model provides a kind of equalization charging circuit of series-connected cell, comprising:
Detecting unit, is electrical connected with control unit and switch element, and described detecting unit includes power component and detecting
The voltage at described power component two ends and provide detecting the voltage at power component two ends detector；
The voltage of each battery in detection set of cells, and the voltage of each battery of detection is supplied to control unit
Voltage detection unit, described voltage detection unit is electrically connected to the electricity being made up of the battery that at least two both positive and negative polarities are sequentially connected in series
Pond group and described control unit；
The voltage at the power component two ends being provided according to described detector calculates between power supply unit and described set of cells
Charge path charging current, described charging current be more than pre-set current value when or described voltage detection unit detection every
When the voltage of individual battery is more than preset voltage value, then send the control unit disconnecting control signal to switch element；
The disconnection control signal being sent according to described control unit, disconnects between described power supply unit and described set of cells
The switch element of charge path, described switch element is electrical connected with described control unit, described set of cells；
For switching the switch unit of the quantity of the battery being charged in set of cells, described switch unit includes at least one
Individual switch, each switch is connected between positive pole and the negative pole of corresponding battery.
Further, described circuit also includes: according to control unit charging current be more than pre-set current value when or detection
The voltage of each battery when being more than preset voltage value, the alarm device that the alarm signal of transmission is reported to the police, described warning dress
Put and be electrical connected with described control unit.
Further, described circuit also includes: according to control unit charging current be more than pre-set current value when or detection
The voltage of each battery when being more than preset voltage value, the display device that the display information of transmission is shown, described display dress
Put and be electrical connected with described control unit.
Further, described control unit includes controller, pwm driver, described controller and described pwm driver,
Described detecting unit, described voltage detection unit are electrical connected.
Further, described power component is first resistor, one end of one end of described first resistor and described detector,
Power supply unit is electrical connected, the other end of the other end of described first resistor and described detector, the electrical phase of described switch element
Even.
Further, described switch element includes inductance, diode, audion, the first electric capacity, one end of described inductance with
Described first resistor is connected, and the other end of described inductance is connected with the anode of diode, and the negative electrode of described diode passes through first
Capacity earth, the base stage of described audion and described control unit are electrical connected, the grounded emitter of described audion, and described three
The colelctor electrode of pole pipe is connected with the anode of diode.
Further, the quantity of battery and the quantity of switch meet equation below: m >=n+2, and wherein, m >=2, m is electricity
The quantity in pond, n is the quantity of switch.
Further, described circuit also includes: detects the voltage of each battery in described set of cells, is detecting each
The voltage of battery be more than preset voltage value when, then send notification signal to described control unit so that described control unit according to
The notification signal that described charge protection unit sends, provides the charge protection unit disconnecting control signal to described switch element；
Described charge protection unit is electrical connected with described control unit, described set of cells.
Further, described set of cells includes the first to the n-th battery, described charge protection unit include n-1 resistance according to
Secondary for second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance to the n-th resistance, n-1 electric capacity is followed successively by second
Electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity to the n-th electric capacity, control chip；One end of described second resistance is electrically connected with
Between set of cells and switch element, the other end passes through the second capacity earth, is also connected with the first pin of described control chip；
Described 3rd resistor is electrically connected between set of cells and switch element, the second pin phase of the other end and described control chip
Even；One end of described 4th resistance is electrically connected between the first battery and the second battery, the other end and described control chip
3rd pin is connected；One end of described 5th resistance is electrically connected between the second battery and the 3rd battery, the other end with described
4th pin of control chip is connected；One end of described 6th resistance is electrically connected between the 3rd battery and the 4th battery, separately
One end is connected with the 5th pin of control chip；One end of described n-th resistance is electrically connected at the n-th -3 battery and the n-th -2 battery
Between, the other end is connected with the (n-1)th pin of described control chip；The output pin of described control chip and described control unit
Controller be connected, n is the integer more than 3.
This utility model provides a kind of balanced charging device of series-connected cell, the above-mentioned equalization charging circuit of its application.
The technical scheme that this utility model embodiment provides has the benefit that
Detect the voltage at power component two ends by the detector of detecting unit；In voltage detection unit detection set of cells
The voltage of each battery；The voltage at the power component two ends that control unit is detected according to detector calculates power supply unit and battery
The charging current of the charge path between group, charging current be more than pre-set current value when or voltage detection unit detection each
When the voltage of battery is more than preset voltage value, then sends and disconnect control signal to switch element；Switch element is according to control unit
The disconnection control signal sending, disconnects the charge path between power supply unit and set of cells, and switch unit can switch set of cells
In the quantity of battery that is charged, thus preventing overcharging in battery charging process or over-current phenomenon avoidance, improve and charging
The safety and reliability of journey, and the quantity that rechargeable battery flexibly can be switched according to demand by switch unit,
Thus meeting the charging switching needs of multiple batteries, this circuit structure is simple in addition, and cost is relatively low.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of description, and in order to allow above and other purpose of the present utility model, feature
Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description
Fig. 1 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model first embodiment provides；
Fig. 2 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model second embodiment provides；
Fig. 3 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model 3rd embodiment provides；
Fig. 4 is the circuit diagram of the equalization charging circuit of series-connected cell that this utility model fourth embodiment provides.
Specific embodiment
For further illustrating that this utility model is to reach technological means and effect that predetermined utility model purpose is taken,
Below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes the equalization charging circuit of series-connected cell and its device
Its specific embodiment, structure, feature and effect, after describing in detail such as.
Relevant of the present utility model aforementioned and other technology contents, feature and effect, in following cooperation with reference to schema relatively
Good embodiment can clearly present in describing in detail.By the explanation of specific embodiment, when can be to reach to this utility model
The technological means that one-tenth predetermined purpose is taken and effect are able to more deeply and specifically understand, but institute's accompanying drawings are only to provide
Reference and purposes of discussion, are not used for this utility model is any limitation as.
First embodiment
Fig. 1 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model first embodiment provides.Described
The set of cells 100 that the equalization charging circuit of series-connected cell is constituted at least two series-connected cells carries out reliability, safely charges, and
And structure is simple, cost is relatively low.Refer to Fig. 1, the charging circuit of the present embodiment includes: control unit 10, switch element 11, detect
Survey unit 12, voltage detection unit 13.
Specifically, set of cells 100 include cell t1-tm that multiple both positive and negative polarities are sequentially connected in series (be followed successively by the first battery,
Second battery is to m battery).
Detecting unit 12, is electrical connected with control unit 10 and switch element 11, wherein detecting unit 12 includes a power
Element and detector, the detector of detecting unit 12 detects the voltage at this power component two ends, and the power component two by detecting
The voltage at end is supplied to control unit 10.
Voltage detection unit 13, is electrically connected to set of cells 100 and control unit 10, and voltage detection unit 13 detects battery
The voltage of each battery in group, and the voltage of each battery of detection is supplied to control unit 10.Referred herein each
The voltage of battery refers to the voltage difference of battery plus-negative plate, i.e. pressure drop on each battery, and the voltage of whole set of cells is each
The voltage sum of battery.Voltage detection unit 13 can be multiple and number of batteries identical voltage detector, each voltage inspection
Survey positive pole and the negative pole that device is electrically connected to one of corresponding battery, for the electricity of the corresponding battery of real-time detection
Pressure.
Control unit 10, is electrically connected with detecting unit 12 and voltage detection unit 13.Control unit 10 is according to detecting unit
The voltage at the power component two ends of detecting that 12 detector provides calculates the charging circuit between power supply unit and set of cells 100
The charging current in footpath, according to the voltage of charging current and/or each battery of voltage detection unit 13 detection, sends corresponding control
Signal processed is to switch element 11.Specifically, if control unit 10 judges that charging current is more than pre-set current value, send disconnected
Open control signal to switch element 11, or when the voltage of each battery judging voltage detection unit detection is more than default electricity
During pressure value, then send and disconnect control signal to switch element 11, if or only when control unit 10 judges charging current
More than pre-set current value and when judging that the voltage of each battery of voltage detection unit detection is more than preset voltage value, send disconnected
Open control signal to switch element 11.Pre-set current value can determine according to the maximum charging current of battery, for example, if charging electricity
Stream can burn out battery more than 1a, then pre-set current value could be arranged to less than or equal to 1a.Preset voltage value can also be according to battery
Upper limit charging voltage determine, for example, preset voltage value can be the numerical value such as 5v.
Wherein, because each series-connected cell can have a voltage signal to be supplied to control unit 10, in charging process, work as institute
When some batteries is fully charged, by the voltage of each battery of sampling, control unit 10 can judge whether battery is fully charged, such as
Fruit is full of, and control unit 10 can provide a control signal to switch element 11, so that switch element 11 turns off charge mode, complete
Become the charging process of whole battery, thus preventing the safety and reliability overcharging phenomenon, improve charging process of battery.
Meanwhile, also when charging current is more than pre-set current value, then send and disconnect control signal to switch element 11, so that switch element
11 shutoff charge modes, thus prevent over-current phenomenon avoidance in charging process for the battery.
Switch element 11, is electrical connected with control unit 10, set of cells 100, the disconnection control being sent according to control unit 10
Signal processed, disconnects the charge path between power supply unit and set of cells 100.
Switch unit 14, is electrical connected with switch element 11, set of cells 100, permissible in switch unit 14 switching set of cells
The quantity of the series-connected cell being charged.More specifically, switch unit 14 can include at least one switching, such as switch k1,
K2 ..., kn, each switch is connected between positive pole and the negative pole of corresponding battery, if one of switch unit 14 switch is disconnected
Open, then the path connection between switch element 11 and the corresponding battery being connected to this switch, if this switch in switch unit 14
Conducting, then the path between switch element 11 and the corresponding battery being connected to switch does not connect.
For example, if switch k1 closes, other batteries in addition to the first battery can be charged, if switch k1
Close with k2 simultaneously, then other batteries in addition to the first battery and the second battery can be charged, if switch k1 and
K2 all disconnects, and all batteries in set of cells can be charged.Therefore, by the switch k1 in switch unit 14,
K2 ..., kn so that the equalization charging circuit of multiple series-connected cell is charged to arbitrarily individual battery, such as two, three
Individual even more.
In sum, the equalization charging circuit of the series-connected cell that this utility model embodiment provides, by detecting unit
Detector detects the voltage at power component two ends；Voltage detection unit detects the voltage of each battery in set of cells；Control single
The voltage at the power component two ends according to detector detecting for the unit calculates filling of the charge path between power supply unit and set of cells
Electric current, when charging current is more than pre-set current value or the voltage of each battery of voltage detection unit detection is more than default electricity
During pressure value, then send and disconnect control signal to switch element；The disconnection control signal that switch element sends according to control unit, breaks
Open the charge path between power supply unit and set of cells, switch unit can switch the number of the battery being charged in set of cells
Amount, thus preventing overcharging in battery charging process or over-current phenomenon avoidance, improves the safety and reliability of charging process, and
And the quantity that rechargeable battery flexibly can be switched according to demand by switch unit, thus meeting the charging of multiple batteries
Switching needs, and this circuit structure is simple in addition, and cost is relatively low.
Second embodiment
Fig. 2 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model second embodiment provides.Please join
Examine Fig. 2, wherein, Fig. 2 improves on the basis of Fig. 1.The difference of Fig. 2 and Fig. 1 is, the series-connected cell of Fig. 2 equal
Weighing apparatus charging circuit can also include charge protection unit 15.
Specifically, charge protection unit 15, is electrical connected with control unit 10, set of cells 100, charge protection unit 15 is examined
Survey the voltage of each battery in set of cells, (battery is full of when the voltage of each battery of detection is more than preset voltage value
Electricity), then send notification signal to control unit 10.Preferably, control unit 10 is always according to leading to that charge protection unit 15 sends
Know signal, provide disconnection control signal to switch element 11, make switch element 11 cut off circuit, stop charging.
Wherein, in addition to the control unit 10 in first embodiment can voluntarily judge whether battery is fully charged, this reality
Apply the charge protection unit 15 in example and can also judge whether battery is fully charged, the charge protection list when all of battery is fully charged
Unit 15 can provide a notification signal to control unit 10, so that control unit 10 sends disconnects control signal to switch element
11, so that switch element 11 turns off charge mode, complete the charging process of whole battery, thus preventing overcharging of battery
Phenomenon, further increases the safety and reliability of charging process.
In sum, the equalization charging circuit of the series-connected cell that this utility model embodiment provides, also by charge protection
Unit when the voltage detecting each battery is more than preset voltage value (battery is fully charged), then sends notification signal single to controlling
Unit, the notification signal that control unit sends according to charge protection unit, provide disconnection control signal to switch element, so that switch
Unit turns off charge mode, thus preventing the peace overcharging phenomenon, improve charging process in battery charging process further
Full property and reliability.
3rd embodiment
Fig. 3 is the structured flowchart of the equalization charging circuit of series-connected cell that this utility model 3rd embodiment provides.Please join
Examine Fig. 3, wherein, Fig. 3 improves on the basis of Fig. 2.The difference of Fig. 3 and Fig. 2 is, the series-connected cell of Fig. 3 equal
Weighing apparatus charging circuit can also include alarm device 40 and/or display device 41.
Specifically, alarm device 40, are electrical connected with control unit 10.
Preferably, control unit 10 also charging current be more than pre-set current value when or detection each battery voltage big
When preset voltage value, send alarm signal to alarm device 40, described alarm device 40 is reported to the police according to alarm signal.Its
In, alarm device 40 can be buzzer or audible-visual annunciator, be used for sending light or sound is reported to the police.
Display device 41, is electrical connected with control unit 10.
Preferably, control unit 10 also charging current be more than pre-set current value when or detection each battery voltage big
When preset voltage value, send and display information to display device 41, display device 41 shows to display information, to point out to use
Family charging current is excessive or has been filled with the information such as electricity.Wherein, display device 40 can be display screen, display screen can show and fill
The excessive information warning of electric current or the information having been filled with electricity.
In sum, the equalization charging circuit of the series-connected cell that this utility model embodiment provides, also by alarm device
Or display device is excessive or reported to the police or display reminding information when having been filled with electricity in charging current, to point out user to take in time
Measure, can improve the safety and reliability of charging process further.
Fourth embodiment
Fig. 4 is the circuit diagram of the equalization charging circuit of series-connected cell that this utility model the 5th embodiment provides.Refer to
Fig. 4, wherein, Fig. 4 improves on the basis of Fig. 3.The difference of Fig. 4 and Fig. 3 is, Fig. 4 be Fig. 3 provide one kind
The circuit diagram of concrete implementation this utility model design.
Specifically, control unit 10 includes controller 101, pwm (pulse width modulation, adjust by pulse width
System) driver 102, controller 101 and pwm driver 102, detecting unit 12, voltage detection unit 13, charge protection unit 15
It is electrical connected.
Wherein, controller 101 can be mcu (microcontroller unit, micro-control unit).Control unit 10
Controller 101 can charging current be more than pre-set current value when or detection each battery voltage be more than preset voltage value
When, send control signal to pwm driver 102, pwm driver 102 sends according to this control signal and disconnects control signal to opening
Close unit 11, switch element 11 disconnects the charge path between power supply unit and set of cells 100.Because each series-connected cell can have
One voltage signal is supplied to control unit 10, and in charging process when all of battery is fully charged, control unit 10 can be passed through
Whether the voltage of each battery of sampling is fully charged to judge battery, if filled with the controller 101 of control unit 10 can provide
To pwm driver 102, pwm driver 102 provides and disconnects control signal to switch element 11 one control signal, so that switch
Unit 11 turns off charge mode, thus preventing the safety overcharging phenomenon, improve charging process in battery charging process
And reliability.Meanwhile, the controller 101 of control unit 10, also when charging current is more than pre-set current value, equally also can provide
To pwm driver 102, pwm driver 102 provides and disconnects control signal to switch element 11 one control signal, so that switch
Unit 11 turns off charge mode, thus preventing the over-current phenomenon avoidance of battery.
Detecting unit 12 includes detector 121 (can be for example voltage detector), power component (such as first resistor
R1), one end of one end of first resistor r1 and detector 121, pwm driver 102, power supply unit are electrical connected, first resistor
The other end of r1 is electrical connected with the other end of detector 121, switch element 11.
Wherein, in the present embodiment, using having power supply unit of usb interface etc., battery can be charged, detecting is single
Unit 12 can detect the voltage at first resistor r1 two ends, and the voltage of detecting is supplied to control unit 10, in control unit 10
Controller 101 charging current is calculated by the voltage at first resistor r1 two ends of sampling.
Switch element 11 includes inductance l1, diode d1, audion q1, the first electric capacity c1, one end of inductance l1 and first
Resistance r1 is connected, and the other end of inductance l1 is connected with the anode of diode d1, and the negative electrode of diode d1 is connect by the first electric capacity c1
Ground, the base stage of audion q1 is electrical connected with the pwm driver 102 of control unit 10, the grounded emitter of audion q1, three poles
The colelctor electrode of pipe q1 is connected with the anode of diode d1.
Wherein, this utility model embodiment limits charging current, the charging circuit of protection battery by diode d1, prevents
Battery reversal connection, to be opened charge mode and to be turned off charge mode by the conducting and cut-off of audion q1, when audion q1 turns on,
Charging current flows directly into ground wire, and charge mode turns off, and when audion q1 cut-off, charging current is directly flow to by diode d1
Respective battery in set of cells, enters charge mode.In this utility model other embodiment, audion q1 can also be other
Switch element, such as transistor etc..
Voltage detection unit 13 includes multiple and number of batteries identical voltage detector.Each voltage detector electrically connects
It is connected to positive pole and the negative pole of one of corresponding battery, for the voltage of the corresponding battery of real-time detection.
Switch unit 14 include multiple switch k1, k2 ..., kn, each switch is connected to positive pole and the negative pole of a battery
Between.
Wherein, the quantity of battery and the quantity of switch meet equation below: m >=n+2, and wherein, m >=2, m is battery
Quantity, n is the quantity of switch, by the multiple switch in switch unit 14, so that the quantity of chargeable series-connected cell
Flexibly switch according to demand.
Charge protection unit 15 includes n-1 resistance, be followed successively by second resistance r2,3rd resistor r3, the 4th resistance r4,
Five resistance r5, the 6th resistance r6 to n-th resistance rn, n-1 electric capacity, it is followed successively by the second electric capacity c2, the 3rd electric capacity c3, the 4th electric capacity
C4, the 5th electric capacity c5 to n-th electric capacity cn, control chip 151.One end of second resistance r2 is electrically connected at set of cells and switch is single
Between unit 11, the other end passes through the second electric capacity c2 ground connection, is also connected with the first pin v4 of control chip 151.3rd resistor r3
It is electrically connected between set of cells and switch element 11, the other end is connected with second pin v4 of control chip 151.4th resistance
One end of r4 is electrically connected between the first battery and the second battery, and the other end is connected with the 3rd pin v2 of control chip 151.
One end of 5th resistance r5 is electrically connected between the second battery and the 3rd battery, and the other end draws with the 4th of control chip 151
Foot v1 is connected.One end of 6th resistance r6 is electrically connected between the 3rd battery and the 4th battery, the other end and control chip 151
The 5th pin v0 be connected.One end of n-th resistance rn is electrically connected at the n-th -3 battery and (assumes that set of cells includes with the n-th -2 battery
The first to the n-th battery) between, the other end is connected with the (n-1)th pin vn-1 of control chip 151.The output of control chip 151 is drawn
Foot out is connected with the controller 101 of control unit 10.Wherein, n is the integer more than 3.Control chip 151 also includes a pin
A cd and pin vss, is also connected with an electric capacity c6, the pin cd of control chip 151 is also by electric capacity between pin cd and pin vss
C6 is grounded.
Wherein, control chip 151 has independent pin to be connected on the both positive and negative polarity of each battery by corresponding resistor, when each
When battery is filled with electricity, control chip 151 can send a notification signal to control unit 10 by output pin out,
Control unit 10 sends control signal to pwm driver 101, and then pwm driver 101 sends and disconnects control signal to opening
Closing unit 11, so that switch element 11 turns off charge mode, completing the charging process of whole battery, thus preventing battery
The safety and reliability overcharging phenomenon, improve charging process.Control chip 151 can arrange more pins, and
Connect corresponding battery plus-negative plate, thus supporting that more batteries are used in series.
The processes such as charging process the following detailed description of charging circuit and its prevent overcharges, excessively stream:
Detector 121 in detecting unit 12 detects the voltage at the first resistor r1 two ends of power component；Voltage detecting list
Voltage detector in unit 13 detects the voltage of each battery in set of cells；Controller 101 in control unit 10 is according to detecing
The voltage surveying the first resistor r1 two ends of unit detecting calculates the charging electricity of the charge path between power supply unit and set of cells
Stream, charging current be more than pre-set current value when or voltage detection unit 13 detection each battery voltage be more than predeterminated voltage
During value, then controller 101 sends control signal to pwm driver 102, and pwm driver 102 sends according to this control signal and disconnects
Control signal is to the audion q1 of switch element 11；Audion q1 turns on, and charging current flows directly into ground wire, thus disconnecting power supply
Charge path between equipment and set of cells, charge mode turns off, thus prevent overcharging phenomenon in battery charging process, carries
The high safety and reliability of charging process.Meanwhile, the controller 101 of control unit 10 is also more than default electricity in charging current
During flow valuve, equally also can provide a control signal to pwm driver 102, pwm driver 102 provide disconnect control signal to
The audion q1 of switch element 11, audion q1 turn on, and charging current flows directly into ground wire, thus disconnecting power supply unit and battery
Charge path between group, charge mode turns off, thus preventing the over-current phenomenon avoidance of battery.
Additionally, charge protection unit 15 can detect the voltage of each battery in set of cells, each battery is being detected
Voltage be more than preset voltage value when, then send notification signal to the controller 101 in control unit, controller is according to charger
The notification signal that shield unit 15 sends, sends control signal to pwm driver 102, pwm driver 102 is according to this control signal
Send the audion q1 disconnecting control signal to switch element 11；Audion q1 turns on, thus disconnecting power supply unit and set of cells
Between charge path, thus preventing the safety and reliability overcharging phenomenon, improve charging process of battery.
Additionally, by the multiple switch in switch unit 14, so that the quantity of chargeable series-connected cell is according to need
Ask flexible switching, if such as switch k1 closes, other batteries in addition to the first battery can be charged, if switch
K1 and k2 closes simultaneously, then other batteries in addition to the first battery and the second battery can be charged, if switch k1
All disconnect with k2, all batteries in set of cells can be charged.
Additionally, control unit 10 when charging current is more than pre-set current value or detection each battery voltage be more than pre-
If during magnitude of voltage, send alarm signal to alarm device 40, alarm device 40 is reported to the police according to alarm signal, for example, can send out
Go out light or sound reported to the police, to point out user to take measures in time, can improve further charging process safety and can
By property.
Additionally, control unit 10 when charging current is more than pre-set current value or detection each battery voltage be more than pre-
If during magnitude of voltage, send and display information to display device 41, display device 41 shows to display information, for example, can show
Information warning beyond electric current or the information having been filled with electricity, to point out user to take measures in time, can improve further
The safety and reliability of charging process.
According to above example, this utility model embodiment also discloses a kind of balanced charging device of series-connected cell, bag
Include the equalization charging circuit of the series-connected cell in above-described embodiment.
In sum, this utility model embodiment provides the equalization charging circuit of series-connected cell and device, by detecting
The detector of unit detects the voltage at power component two ends；Voltage detection unit detects the voltage of each battery in set of cells；
The voltage at the power component two ends that control unit is detected according to detector calculates the charging circuit between power supply unit and set of cells
The charging current in footpath, when charging current is more than pre-set current value or the voltage of each battery of voltage detection unit detection is more than
During preset voltage value, then send and disconnect control signal to switch element；Switch element controls according to the disconnection that control unit sends
Signal, disconnects the charge path between power supply unit and set of cells, and switch unit can switch the electricity being charged in set of cells
The quantity in pond, thus preventing overcharging in battery charging process or over-current phenomenon avoidance, improve charging process safety and can
By property, and the quantity that rechargeable battery flexibly can be switched according to demand by switch unit, thus meeting multiple electricity
The charging switching in pond needs, and this circuit structure is simple in addition, and cost is relatively low.
The above, be only preferred embodiment of the present utility model, not this utility model is made any formal
Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above
Hold and make a little Equivalent embodiments changing or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still
Belong in the range of technical solutions of the utility model.
Claims (10)
1. a kind of equalization charging circuit of series-connected cell it is characterised in that comprising:
Detecting unit, is electrical connected with control unit and switch element, and described detecting unit includes power component and detecting is described
The voltage at power component two ends and provide detecting the voltage at power component two ends detector；
The voltage of each battery in detection set of cells, and the voltage of each battery of detection is supplied to the voltage of control unit
Detector unit, described voltage detection unit is electrically connected to the set of cells being made up of the battery that at least two both positive and negative polarities are sequentially connected in series
And described control unit；
The voltage at the power component two ends being provided according to described detector calculates filling between power supply unit and described set of cells
The charging current of power path, described charging current be more than pre-set current value when or described voltage detection unit detection each electricity
When the voltage in pond is more than preset voltage value, then send the control unit disconnecting control signal to switch element；
The disconnection control signal being sent according to described control unit, disconnects the charging between described power supply unit and described set of cells
The switch element in path, described switch element is electrical connected with described control unit, described set of cells；
For switching the switch unit of the quantity of the battery being charged in set of cells, described switch unit includes at least one and opens
Close, each switch is connected between positive pole and the negative pole of corresponding battery.
2. equalization charging circuit according to claim 1 is it is characterised in that also include: according to control unit in the electricity that charges
Stream more than pre-set current value when or detection each battery voltage be more than preset voltage value when, the alarm signal of transmission is reported
Alert alarm device, described alarm device and described control unit are electrical connected.
3. equalization charging circuit according to claim 1 is it is characterised in that also include: according to control unit in the electricity that charges
Stream more than pre-set current value when or detection each battery voltage be more than preset voltage value when, the display information of transmission is carried out
The display device of display, described display device and described control unit are electrical connected.
4. equalization charging circuit according to claim 1 is it is characterised in that described control unit includes controller, pwm drives
Dynamic device, described controller is electrical connected with described pwm driver, described detecting unit, described voltage detection unit.
5. equalization charging circuit according to claim 1 is it is characterised in that described power component is first resistor, described
One end of first resistor is electrical connected with one end of described detector, power supply unit, the other end of described first resistor with described
The detector other end, described switch element are electrical connected.
6. equalization charging circuit according to claim 5 it is characterised in that described switch element include inductance, diode,
Audion, the first electric capacity, one end of described inductance is connected with described first resistor, the other end of described inductance and the sun of diode
Extremely connected, the negative electrode of described diode passes through the first capacity earth, the base stage of described audion electrical phase with described control unit
Even, the grounded emitter of described audion, the colelctor electrode of described audion is connected with the anode of diode.
7. equalization charging circuit according to claim 1 is it is characterised in that the quantity of described battery is full with the quantity of switch
Sufficient equation below: m >=n+2, wherein, m >=2, m is the quantity of battery, and n is the quantity of switch.
8. equalization charging circuit according to claim 1 is it is characterised in that also include: detects every in described set of cells
The voltage of individual battery, when the voltage each battery is detected is more than preset voltage value, then sends notification signal to described control
Unit, so that the notification signal that described control unit sends according to charge protection unit, provides disconnection control signal to open to described
Close the charge protection unit of unit；Described charge protection unit is electrical connected with described control unit, described set of cells.
9. equalization charging circuit according to claim 8 is it is characterised in that described set of cells includes the first to the n-th battery,
Described charge protection unit includes n-1 resistance and is followed successively by second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th electricity
Hinder to the n-th resistance, n-1 electric capacity is followed successively by the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity to the n-th electric capacity, control
Chip；One end of described second resistance is electrically connected between set of cells and switch element, and the other end is connect by the second electric capacity
Ground, is also connected with the first pin of described control chip；Described 3rd resistor is electrically connected between set of cells and switch element,
The other end is connected with the second pin of described control chip；One end of described 4th resistance is electrically connected at the first battery and second
Between battery, the other end is connected with the 3rd pin of described control chip；One end of described 5th resistance is electrically connected at second
Between battery and the 3rd battery, the other end is connected with the 4th pin of described control chip；One end of described 6th resistance is electrical
It is connected between the 3rd battery and the 4th battery, the other end is connected with the 5th pin of control chip；One end of described n-th resistance
It is electrically connected between the n-th -3 battery and the n-th -2 battery, the other end is connected with the (n-1)th pin of described control chip；Described control
The output pin of coremaking piece is connected with the controller of described control unit, and n is the integer more than 3.
10. a kind of balanced charging device of series-connected cell is it is characterised in that its application is as any one of claim 1-9
Equalization charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620719306.7U CN205911778U (en) | 2016-07-08 | 2016-07-08 | Series battery's equalizing charge circuit and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620719306.7U CN205911778U (en) | 2016-07-08 | 2016-07-08 | Series battery's equalizing charge circuit and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205911778U true CN205911778U (en) | 2017-01-25 |
Family
ID=57805127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620719306.7U Active CN205911778U (en) | 2016-07-08 | 2016-07-08 | Series battery's equalizing charge circuit and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205911778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107187334A (en) * | 2017-07-27 | 2017-09-22 | 重庆日拓能源科技有限公司 | Series battery voltage balanced management system, series battery and its control method |
| WO2018006775A1 (en) * | 2016-07-08 | 2018-01-11 | 常州聚为智能科技有限公司 | Balanced charging circuit of serial batteries and apparatus thereof |
-
2016
- 2016-07-08 CN CN201620719306.7U patent/CN205911778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006775A1 (en) * | 2016-07-08 | 2018-01-11 | 常州聚为智能科技有限公司 | Balanced charging circuit of serial batteries and apparatus thereof |
| CN107187334A (en) * | 2017-07-27 | 2017-09-22 | 重庆日拓能源科技有限公司 | Series battery voltage balanced management system, series battery and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105978106B (en) | The equalization charging circuit and its device of series-connected cell | |
| CN105429226B (en) | Large capacity charge-discharge battery manages system | |
| KR100930132B1 (en) | The controlling and monitoring apparatus for photovoltaic power system | |
| CN103415972B (en) | For detecting the mthods, systems and devices of parallel arc fault | |
| CN104620117B (en) | Power supply apparatus | |
| CN105150963B (en) | A kind of automobile power system of stabilization | |
| CN103715737A (en) | Lithium battery charging/ discharging management system | |
| CN104548354B (en) | The defibrillation charging overcurrent protective device and defibrillation monitor of defibrillation monitor | |
| CN102055218A (en) | Battery state monitoring circuit and battery device | |
| CN102043114A (en) | Electrification loop-breaking method for direct current power supply and special device thereof | |
| CN109638918A (en) | A kind of charging circuit and electronic equipment | |
| CN204144974U (en) | The protection of lithium battery and inversion system | |
| CN102004213B (en) | Direct-detection type intelligent direct-current system insulation and state diagnosis instrument | |
| AU2015411280B2 (en) | Intelligent charger with diagnostic function and charging method | |
| CN205911778U (en) | Series battery's equalizing charge circuit and device thereof | |
| CN102411120B (en) | Earth line selection device for converting station direct current system | |
| CN104375021B (en) | Device and method for detecting lithium battery pack protection board | |
| CN106208177A (en) | A kind of battery electron management method and system | |
| CN209675960U (en) | A kind of preliminary filling protective device | |
| CN104065043B (en) | Battery under-voltage protection and display circuit | |
| CN106166990A (en) | A kind of startup power circuit | |
| CN205509480U (en) | Lithium cell protecting device | |
| CN201828640U (en) | Direct-detecting intelligent apparatus for diagnosing insulation and status of direct-current (DC) system | |
| CN211426728U (en) | Wiring device for storage battery | |
| CN205509565U (en) | Safe charging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |