CN207039214U - Cell equalizing protecting circuit and battery equalization system - Google Patents
Cell equalizing protecting circuit and battery equalization system Download PDFInfo
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- CN207039214U CN207039214U CN201720554558.3U CN201720554558U CN207039214U CN 207039214 U CN207039214 U CN 207039214U CN 201720554558 U CN201720554558 U CN 201720554558U CN 207039214 U CN207039214 U CN 207039214U
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model provides a kind of cell equalizing protecting circuit and battery equalization system, is related to electrokinetic cell field.The cell equalizing protecting circuit includes under-voltage detection module, over-pressed detection module, fault-signal trigger module, fault-signal and keeps module and protection control module.Wherein, fault-signal keeps the output end of module to be connected with the input and outer signal output end for protecting control module; fault-signal keeps module to be used to receive false trigger signals; generation keeps the Trouble Report signal of a period of time, and exports Trouble Report signal to protection control module and outer signal output end.
Description
Technical field
It the utility model is related to electrokinetic cell field, more particularly to a kind of cell equalizing protecting circuit and battery equalization system.
Background technology
With the development of power battery technology, in order to meet requirement of the various equipment of user for battery modules electricity,
The capacity of battery modules is also gradually increasing.Battery modules include multiple battery cores.Due to of multiple battery cores in battery modules
Body difference or temperature difference etc., the uniformity of the battery core in battery modules are affected so that each battery core in battery modules
Electricity, voltage or electric current etc. it is inconsistent, so as to reduce the life-span of battery modules.
In order to ensure the life-span of battery modules, balance policy is taken to each battery core in battery modules.For example it is voltage
Low battery core electric energy supplement, the voltage of the low battery core of voltage is improved, the voltage of battery core is reached equalizing voltage.Or to voltage
High battery core is discharged, and is reduced the voltage of the high battery core of voltage, the voltage of battery core is reached equalizing voltage.In balance policy
It is required that equalizing voltage is maintained in certain safe range.But it may can cause to adopt because some unexpected factors in balancing procedure
Overcharged or crossed with the battery core of balance policy and put, the equalizing voltage of battery core is beyond safe range.And then cause battery modules
Safety failure, reduce the security of battery modules.
In order to ensure the security of battery modules, equalizing voltage is detected by cell equalizing protecting circuit, if equalizing voltage surpasses
Go out safe range, produce fault-signal, control Balance route chip is stopped at once.When Balance route chip is stopped,
Equalizing voltage disappears, and fault-signal also disappears therewith.That is, fault-signal existence time is very of short duration, it is difficult to catches.From
And cause to be difficult to the time of record security failure generation, and then can not be according to the time when later stage is safeguarded to battery modules
Carry out positioning security failure.
Utility model content
The utility model embodiment provides a kind of cell equalizing protecting circuit and battery modules system, can realize safety failure
The record of the time of generation, positioning during so as to realize that the later stage safeguards to battery modules to safety failure.
On the one hand, the utility model embodiment provides a kind of cell equalizing protecting circuit, including：
Under-voltage detection module, input and the equalizing voltage sampling end and first voltage of the under-voltage detection module provide end
Connection, the output end of the under-voltage detection module are connected with the input of fault-signal trigger module, the under-voltage detection module
Lower voltage limit on the basis of photovoltaic conversion for the first voltage to be provided to end, if the equalizing voltage of equalizing voltage sampling end is small
In the benchmark lower voltage limit, under-voltage trigger signal is exported to the fault-signal trigger module；
Over-pressed detection module, the input of the over-pressed detection module carry with the equalizing voltage sampling end and second voltage
Connected for end, the output end of the over-pressed detection module is connected with the input of the fault-signal trigger module, the overvoltage
Upper voltage limit on the basis of photovoltaic conversion of the detection module for the second voltage to be provided to end, if equalizing voltage sampling end is equal
Weighing apparatus voltage is more than the benchmark upper voltage limit, to the fault-signal trigger module output overvoltage trigger signal；
The fault-signal trigger module, output end and the fault-signal of the fault-signal trigger module keep module
Input connects, and the fault-signal trigger module is used to receive the under-voltage trigger signal or the over-pressed trigger signal, to
The fault-signal keeps module output false trigger signals；
The fault-signal keeps module, and the fault-signal keeps the input of the output end and protection control module of module
End connects with outer signal output end, and the fault-signal keeps module to be used to receive the false trigger signals, and generation is kept
The Trouble Report signal of a period of time, and export the failure report to the protection control module and the outer signal output end
Accuse signal；
The protection control module, the output end of the protection control module are connected with Balance route chip, the protection
Control module is used to receive the Trouble Report signal, to the Balance route chip output services stop signal, described in control
Balance route chip is stopped.
On the other hand, the utility model embodiment provides a kind of battery equalization system, and the battery equalization system includes upper
State the cell equalizing protecting circuit in embodiment.
The utility model embodiment provides a kind of cell equalizing protecting circuit and battery equalization system, the cell equalizing protecting circuit bag
Include under-voltage detection module, over-pressed detection module, fault-signal trigger module, fault-signal and keep module and protection control module.
When receiving under-voltage trigger signal or over-pressed trigger signal, fault-signal trigger module keeps module output failure to fault-signal
Trigger signal.Fault-signal keeps module to receive false trigger signals, can generate the Trouble Report signal for being kept for a period of time, and
To protection control module and outer signal output end output Trouble Report signal.Outer signal output end can connect microcontroller list
Member, because Trouble Report signal can keep a period of time, so micro-control unit can capture Trouble Report signal easily.Enter
And the record for the time that safety failure occurs can be realized, realize and safety failure is determined when the later stage safeguards to battery modules
Position.
Brief description of the drawings
This practicality may be better understood from the description to specific embodiment of the present utility model below in conjunction with the accompanying drawings
It is new wherein, same or analogous reference represents same or analogous feature.
Fig. 1 is the structural representation of the cell equalizing protecting circuit in the embodiment of the utility model one；
Fig. 2 is the structural representation of the cell equalizing protecting circuit of an example in the embodiment of the utility model one；
Fig. 3 is the structural representation of the cell equalizing protecting circuit in another embodiment of the utility model；
Fig. 4 is the structural representation of the cell equalizing protecting circuit in the example of another embodiment of the utility model；
Fig. 5 is the structural representation of the cell equalizing protecting circuit in the another embodiment of the utility model；
Fig. 6 is the structural representation of the cell equalizing protecting circuit in the example of the another embodiment of the utility model.
Embodiment
The feature and exemplary embodiment of various aspects of the present utility model is described more fully below.Retouched in detail in following
In stating, it is proposed that many details, to provide to comprehensive understanding of the present utility model.But for people in the art
It will be apparent that the utility model can be implemented in the case of some details in not needing these details for member.
Description to embodiment below is used for the purpose of providing to of the present utility model more preferable by showing example of the present utility model
Understanding.The utility model is never limited to any concrete configuration set forth below and algorithm, but new not departing from this practicality
Any modification, replacement and the improvement of element, part and algorithm are covered on the premise of the spirit of type.In accompanying drawing and following description
In, known structure and technology is not shown, to avoid causing the utility model unnecessary obscure.
Fig. 1 is the structural representation of the cell equalizing protecting circuit in the embodiment of the utility model one.As shown in figure 1, balanced protect
Protection circuit includes under-voltage detection module P1, over-pressed detection module P2, fault-signal trigger module P3, fault-signal and keeps module P4
With protection control module P5.
Under-voltage detection module P1 input provides end V1 with equalizing voltage sampling end Vin and first voltage and is connected, under-voltage
Detection module P1 output end is connected with fault-signal trigger module P3 input, and under-voltage detection module P1 is used for the first electricity
Lower voltage limit on the basis of pressure offer end V1 photovoltaic conversion, if equalizing voltage sampling end Vin equalizing voltage is less than benchmark lower limit
Voltage, under-voltage trigger signal is exported to fault-signal trigger module P3.
Wherein, equalizing voltage sampling end Vin can provide the equalizing voltage collected.Under-voltage trigger signal represents equalizing voltage
Phenomenon that generation is under-voltage.
Over-pressed detection module P2 input provides end V2 with equalizing voltage sampling end Vin and second voltage and is connected, overvoltage
Detection module P2 output end is connected with fault-signal trigger module P3 input, and over-pressed detection module P2 is used for the second electricity
Upper voltage limit on the basis of pressure offer end V2 photovoltaic conversion, if equalizing voltage sampling end Vin equalizing voltage is more than the benchmark upper limit
Voltage, to fault-signal trigger module P3 output overvoltage trigger signals.
Wherein, the voltage of voltage and second voltage offer end V2 that first voltage provides end V1 can be with identical, can also not
Together, but to ensure that benchmark upper voltage limit is more than benchmark lower voltage limit.Over-pressed trigger signal represents that over-pressed phenomenon occurs for equalizing voltage.
Fault-signal trigger module P3 output end keeps module P4 input to be connected with fault-signal, and fault-signal touches
Hair module P3 is used to receive under-voltage trigger signal or over-pressed trigger signal, and module P4 output failure triggering letters are kept to fault-signal
Number.
Fault-signal keeps module P4 output end and protection control module P5 input and outer signal output end
Vout connections, fault-signal keep module P4 to be used to receive false trigger signals, and generation keeps the Trouble Report letter of a period of time
Number, and export Trouble Report signal to protection control module P5 and outer signal output end vo ut.
Wherein, false trigger signals duration is very of short duration, is touched when fault-signal keeps module P4 to receive failure
During signalling, Trouble Report signal is generated.Trouble Report signal can keep a period of time, equivalent to by short duration
False trigger signals are locked so that can catch false trigger signals by Trouble Report signal.And kept for a period of time
It is identical at the time of the initial time of Trouble Report signal is with receiving false trigger signals.Therefore, from outer signal output end
Vout can gather the Trouble Report signal of output, keep the initial time of the Trouble Report signal of a period of time and can regard peace as
The time that total failure occurs.
Protection control module P5 output end is connected with Balance route chip, and protection control module P5 is used to receive failure report
Signal is accused, to Balance route chip output services stop signal, control Balance route chip is stopped.
Wherein, Balance route chip is stopped, and represents that battery balanced process stops.
The utility model embodiment provide cell equalizing protecting circuit and it is battery balanced include under-voltage detection module P1, overvoltage examine
Survey module P2, fault-signal trigger module P3, fault-signal and keep module P4 and protection control module P5.When the under-voltage triggering of reception
When signal or over-pressed trigger signal, fault-signal trigger module P3 keeps module P4 output false trigger signals to fault-signal.
Fault-signal keeps module P4 to receive false trigger signals, can generate the Trouble Report signal for being kept for a period of time, and to protection
Control module P5 and outer signal output end vo ut output Trouble Report signals.Outer signal output end vo ut can connect micro-control
Unit processed, because Trouble Report signal can keep a period of time, so micro-control unit can capture Trouble Report letter easily
Number.And then the record for the time that safety failure occurs can be realized, realize when the later stage safeguards to battery modules to safety event
The positioning of barrier.
Fig. 2 is the structural representation of the cell equalizing protecting circuit of an example in the embodiment of the utility model one.As shown in Fig. 2
Under-voltage detection module P1, over-pressed detection module P2, fault-signal trigger module P3 in Fig. 1, fault-signal keep module P4 and
Protection control module P5 can be made up of component.Illustrate under-voltage detection module P1, over-pressed detection module P2, failure letter below
Number trigger module P3, fault-signal keep module P4 and protect control module P5 concrete structure.
Under-voltage detection module P1 includes first resistor combination, second resistance combination and first comparator M1.
Wherein, one end and the first voltage of first resistor combination provide end V1 and be connecteds, the other end that first resistor combines and
One end connection of second resistance combination, the other end ground connection GND1 of second resistance combination.
First comparator M1 normal phase input end is connected with equalizing voltage sampling end Vin, and first comparator M1's is anti-phase defeated
The one end for entering the other end combined with first resistor at end and second resistance combination is all connected with, first comparator M1 output end and event
Hinder the P3 connections of signal trigger module.
As shown in Fig. 2 first resistor combination includes resistance R3 and R4, second resistance combination includes resistance R2.First resistor
Combination and second resistance are combined as series relationship, and the benchmark lower voltage limit that first comparator M1 inverting input receives is the
The voltage of one end of two resistance combination.Therefore, can be in circuit design, according to operative scenario or work requirements, adjustment first
The resistance of resistance combination and the resistance of second resistance combination so that under first voltage is provided on the basis of the voltage conversion that end V1 is provided
Voltage limit.It should be noted that first resistor combination includes at least one resistance, second resistance combination includes at least one electricity
Hinder, the resistance combination in the combination and second resistance combination of the resistance in first resistor combination does not limit herein.
Protective resistance can also be set in under-voltage detection module P1, to ensure that the electric current for flowing through under-voltage detection module P1 will not be excessive,
For example the resistance R1 in Fig. 2 is protective resistance.
As shown in Fig. 2 first comparator M1, which is also connected with the 7th voltage, provides end V7 and earth terminal GND2, the 7th voltage provides
End V7 can provide operating voltage for first comparator M1.
In order to improve the accuracy of under-voltage detection module P1 detections, can also be provided for filtering in under-voltage detection module P1
The electric capacity C1 of ripple, electric capacity C1 one end are connected with first comparator M1 normal phase input end, electric capacity C1 other end ground connection.
Over-pressed detection module P2 includes 3rd resistor combination, the combination of the 4th resistance and the second comparator M2.
Wherein, one end and the second voltage of 3rd resistor combination provide end V2 and be connecteds, the other end that 3rd resistor combines and
One end connection of 4th resistance combination, the other end ground connection GND3 of the 4th resistance combination.
The other end and one end of the 4th resistance combination that second comparator M2 normal phase input end combines with 3rd resistor are equal
Connection, the second comparator M2 inverting input are connected with equalizing voltage sampling end Vin, the second comparator M2 output end and event
Hinder the P3 connections of signal trigger module.
As shown in Fig. 2 3rd resistor combination includes resistance R8, the combination of the 4th resistance includes resistance R6 and R7.3rd resistor
Combination and the 4th resistance are combined as series relationship, and the benchmark upper voltage limit that the second comparator M2 normal phase input end receives is the
The voltage of one end of four resistance combination.Therefore, can be in circuit design, according to operative scenario or work requirements, adjustment the 3rd
The resistance of resistance combination and the resistance of the 4th resistance combination so that second voltage is provided on the basis of the voltage conversion that end V2 is provided
Voltage limit.Benchmark lower voltage limit and benchmark upper voltage limit can be set more accurate, reduced the protection domain of equalizing voltage, made
Protection that must be to equalizing voltage is more accurate.It should be noted that 3rd resistor combination includes at least one resistance, the 4th resistance
Combination includes at least one resistance, and the resistance during the combination of the resistance in 3rd resistor combination and the 4th resistance combine combines
Mode does not limit herein.Protective resistance can also be set in over-pressed detection module P2, to ensure to flow through over-pressed detection module
P2 electric current will not be excessive, for example the resistance R5 in Fig. 2 is protective resistance.
As shown in Fig. 2 the second comparator M2, which is also connected with the 8th voltage, provides end V8 and earth terminal GND4, the 4th voltage provides
End V4 can provide operating voltage for the 8th comparator.
In order to improve the accuracy of over-pressed detection module P2 detections, can also be provided for filtering in over-pressed detection module P2
The electric capacity C2 of ripple, electric capacity C2 one end are connected with the second comparator M2 inverting input, electric capacity C2 other end ground connection.
Fault-signal trigger module P3, which includes the first photo-coupler OC1, the first photo-coupler OC1, includes the first light-emitting diodes
Pipe L1 and the first photosensitive semiconductor pipe T1.
Wherein, the first light emitting diode L1 positive pole provides end V3 with tertiary voltage and is connected, the first light emitting diode L1's
Negative pole is all connected with under-voltage detection module P1 output end and over-pressed detection module P2 output end.
First photosensitive semiconductor pipe T1 one end and fault-signal keep module P4 input to be connected, and first photosensitive partly leads
Body pipe T1 other end ground connection GND5.
Protective resistance can also be set in fault-signal trigger module P3, to ensure to flow through fault-signal trigger module P3
Electric current will not be excessive, for example resistance R9 in Fig. 2 is protective resistance.
Fault-signal keeps module P4 to include the first transistor Q1 and second transistor Q2.
Wherein, the first transistor Q1 control terminal is connected with fault-signal trigger module P3 output end, the first transistor
Q1 first end provides end V4 with the 4th voltage and is connected, and the first transistor Q1 the second end and outer signal output end vo ut connect
Connect.In one example, outer signal output end vo ut can with external micro-control unit (MCU, Micro Control Unit),
There is the time that micro-control unit carrys out the generation of record security failure.
Second transistor Q2 control terminal and the first transistor Q1 the second end and protection control module P5 input are equal
Connection, second transistor Q2 first end ground connection GND6, second transistor Q2 the second end are with fault-signal trigger module P3's
Output end connects.
It can also keep setting protective resistance in module P4 in fault-signal, module P4 is kept to ensure to flow through fault-signal
Electric current will not be excessive, and avoid transistor from being burned, such as resistance R10, R11, R12, R13, R14 and R15 in Fig. 2 equal
For protective resistance.
Protecting control module P5 includes third transistor Q3 and the second photo-coupler OC2, and the second photo-coupler OC2 includes the
Two light emitting diode L2 and the second photosensitive semiconductor pipe T2.
Third transistor Q3 control terminal and fault-signal keep module P4 output end to be connected, and the of third transistor Q3
One end is grounded GND7, and third transistor Q3 the second end is connected with the second light emitting diode L2 negative pole.
Second light emitting diode L2 positive pole provides end V5 with the 5th voltage and is connected.
Second photosensitive semiconductor pipe T2 one end is connected with Balance route chip, the second photosensitive semiconductor pipe T2 other end
It is grounded GND8.In one example, the second photosensitive semiconductor pipe T2 one end can be connected with the enabled pin of Balance route chip.
Protective resistance can also be set in control module P5 is protected, to ensure to flow through the electric current for protecting control module P5 not
Can be excessive, and avoid transistor from being burned, for example resistance R16, R17 and R18 in Fig. 2 are protective resistance.
Below using the first transistor Q1 as PNP triode, second transistor Q2 and third transistor Q3 are the poles of NPN tri-
Pipe, control terminal are base stage, and first end is emitter stage, exemplified by the second end is colelctor electrode, to illustrate balance protection electricity as shown in Figure 2
The operation principle on road：
First comparator M1 normal phase input end receives the equalizing voltage of equalizing voltage sampling end Vin input, the first ratio
Inverting input compared with device M1 receives benchmark lower voltage limit.If equalizing voltage is less than benchmark lower voltage limit, first comparator M1
Output end output low level signal (i.e. under-voltage trigger signal).
Second comparator M2 inverting input receives the equalizing voltage of equalizing voltage sampling end Vin input, the second ratio
Normal phase input end compared with device M2 receives benchmark upper voltage limit.If equalizing voltage is more than benchmark upper voltage limit, the second comparator M2
Output end output low level signal (i.e. over-pressed trigger signal).
If the negative pole of the first light emitting diode L1 in the first photo-coupler OC1 receives low level signal, first is luminous
Diode L1 is turned on and lighted.The first photosensitive semiconductor pipe T1 in first photo-coupler OC1 receives the first light emitting diode
Light that L1 is sent and turn on, the signal of the first photosensitive semiconductor pipe T1 one end is dragged down.
The low level signal of the first transistor Q1 the first photosensitive semiconductor pipe T1 of control terminal reception one end (i.e. touch by failure
Signal), the first transistor Q1 conductings.The first transistor Q1, which provides the 4th voltage of first end to the end high level that V4 is provided, to be believed
Number transmit the control terminal to second transistor Q2 control terminal and third transistor Q3.Second transistor Q2 is turned on, brilliant by first
The signal of body pipe Q1 control terminal is down for low level signal.The first transistor Q1 will keep conducting state, outer signal
Output end vo ut output high level signals (i.e. Trouble Report signal), and kept for a period of time, until fault-signal keeps module
P4 resets.
Third transistor Q3 control terminal receives high level signal, third transistor Q3 conductings.In second photo-coupler OC2
The second lighting transistor negative pole with connect, the second lighting transistor is turned on and lighted.In second photo-coupler OC2
Two photosensitive semiconductor pipe T2 are turned on, and low level signal is exported to Balance route chip (work stop signal).Balance route core
Piece receives low level signal, is stopped, and realizes the protection to battery modules.
Fig. 3 is the structural representation of the cell equalizing protecting circuit in another embodiment of the utility model.Fig. 3 and Fig. 1 difference
Part is that the cell equalizing protecting circuit in Fig. 3 also includes reseting module P6.
Reseting module P6 input is connected with outer signal input Vr, reseting module P6 output end and fault-signal
Keep module P4 input connection, for receiving outer signal input Vr control signal, module is kept to fault-signal
P4 exports reset signal, and control fault-signal keeps module P4 to reset.
Reseting module P6 can control fault-signal to keep module P4 to reset, so as to start the inspection of the equalizing voltage of a new round
Survey.
Fig. 4 is the structural representation of the cell equalizing protecting circuit in the example of another embodiment of the utility model.Fig. 4 and Fig. 2
Difference be, in Fig. 4 increase newly reseting module P6 can be made up of component.Illustrate reseting module P6 specific knot below
Structure.
Reseting module P6 includes the 4th transistor Q4.4th transistor Q4 control terminal connects with outer signal input Vr
Connect, the 4th transistor Q4 first end and the 6th voltage provide end V6 and is connected, the 4th transistor Q4 the second end and fault-signal
Keep module P4 input connection.Outer signal input Vr can be connected with micro-control unit, be sent by micro-control unit
Signal, control reseting module P6.
As shown in figure 4, resistance R19 and R20 therein is protective resistance, avoid the electric current for flowing through reseting module P6 excessive,
Also it is avoided that transistor is burned.
Illustrated below so that the 4th transistor Q4 is PNP triode as an example.At the beginning of outer signal input Vr signal
Begin as high level signal, the 4th transistor Q4 cut-offs.When the battery core voltage that micro-control unit is monitored in battery modules is normal and electric
The communication of pond module is normal, then passes through outer signal input Vr input low level signals.4th transistor Q4 control termination
Low level signal is received, the 4th transistor Q4 conductings, high level signal is transmitted to the first transistor Q1 control terminal.First crystal
Pipe Q1 control terminal receives high level signal (i.e. reset signal), the first transistor Q1 cut-offs, second transistor Q2 control terminal
Inputted without high level signal, the output of outer signal output end vo ut no signals, realize the reset that fault-signal keeps module P4.
Third transistor Q3 control terminal inputs without high level signal, third transistor Q3 cut-offs.Second photo-coupler OC2
Disconnect, no normal direction Balance route chip provides low level signal (work stop signal).Balance route chip can continue to work
Make.
Fig. 5 is the structural representation of the cell equalizing protecting circuit in the another embodiment of the utility model.Fig. 5 and Fig. 3 difference
Part is that the cell equalizing protecting circuit in Fig. 5 also includes working signal and provides module P7.
Working signal provides module P7 input and working signal provides end and is connected, and working signal provides the defeated of module P7
Go out end to be connected with Balance route chip, working signal provides module P7 and is used to protect control module P5 not receive Trouble Report signal
When, provide working signal for Balance route chip.
Fig. 6 is the structural representation of the cell equalizing protecting circuit in the example of the another embodiment of the utility model.Fig. 6 and Fig. 4
Difference be, in Fig. 6 increase newly working signal provide module P7 can be made up of component.Illustrate that working signal carries below
For module P7 concrete structure.
Working signal, which provides module P7, includes equivalent resistance combination and diode.Wherein, diode can be one, also may be used
Think more than one.
The first end of equivalent resistance combination is connected with Balance route chip, the second end ground connection of equivalent resistance combination, equivalent
3rd end of resistance combination and the negative pole of diode connect.The positive pole of diode provides end with working signal and is connected.
As shown in fig. 6, equivalent resistance combination may include resistance R21 and R22, diode shares three, respectively D1, D2 and
D3.The positive pole of diode D1 positive pole, D2 positive pole and D3 provides end Vw1, Vw2 and Vw3 with working signal respectively and is connected.Resistance
R21 one end is connected with Balance route chip, the resistance R21 other end and resistance R22 one end and diode D1 negative pole, D2
Negative pole connected with D3 negative pole.Resistance R22 other end ground connection.
If third transistor Q3 does not receive high level signal (i.e. Trouble Report signal), working signal provide end Vw1,
Vw2 and/or Vw3 provides high level signal (i.e. working signal) to Balance route chip so that Balance route chip normal work.
It should be noted that the first voltage in above-described embodiment provides end V1, second voltage provides end V2, tertiary voltage
There is provided end V3, the 4th voltage provides end V4, the 5th voltage provides end V5, the 6th voltage provides end V6, the 7th voltage provides end V7
The end V8 voltages for being provided which to be higher than 0V are provided with the 8th voltage.First voltage provides end V1, second voltage provides end V2, the 3rd electricity
Pressure provides end V3, the 4th voltage provides end V4, the 5th voltage provides end V5, the 6th voltage provides end V6, the 7th voltage provides end
The voltage that V7 and the 8th voltage provide end V8 can be with identical, can also be different, specifically can be according to the work of cell equalizing protecting circuit
Demand is adjusted.
The utility model embodiment additionally provides a kind of battery equalization system, and the battery equalization system includes above-described embodiment
In cell equalizing protecting circuit.Battery equalization system can also include Balance route chip, battery modules or other functional chips,
Functional module, do not limit herein.
Feature, structure or characteristic described in above-described embodiment can be incorporated in one or more in any suitable manner
In more embodiments.In the following description, there is provided many details are so as to providing to the abundant of embodiment of the present utility model
Understand.It will be appreciated, however, by one skilled in the art that the technical solution of the utility model can be put into practice without in specific detail
It is one or more, or other components etc. can be used.In other cases, it is not shown in detail or describes known knot
Structure, material etc. with avoid obscure major technique intention of the present utility model.
Claims (11)
- A kind of 1. cell equalizing protecting circuit, it is characterised in that including：Under-voltage detection module, the input of the under-voltage detection module provide end with equalizing voltage sampling end and first voltage and connected Connect, the output end of the under-voltage detection module is connected with the input of fault-signal trigger module, and the under-voltage detection module is used The lower voltage limit on the basis of the first voltage to be provided to the photovoltaic conversion at end, if the equalizing voltage of equalizing voltage sampling end is less than The benchmark lower voltage limit, under-voltage trigger signal is exported to the fault-signal trigger module；Over-pressed detection module, the input of the over-pressed detection module provide end with the equalizing voltage sampling end and second voltage Connection, the output end of the over-pressed detection module are connected with the input of the fault-signal trigger module, the overvoltage detection Upper voltage limit on the basis of photovoltaic conversion of the module for the second voltage to be provided to end, if the equilibrium electricity of equalizing voltage sampling end Pressure is more than the benchmark upper voltage limit, to the fault-signal trigger module output overvoltage trigger signal；The fault-signal trigger module, the output end of the fault-signal trigger module keep the input of module with fault-signal End connection, the fault-signal trigger module is used to receive the under-voltage trigger signal or the over-pressed trigger signal, to described Fault-signal keeps module output false trigger signals；The fault-signal keeps module, the fault-signal keep the output end of module and the input of protection control module and Outer signal output end connects, and the fault-signal keeps module to be used to receive the false trigger signals, and generation is kept for one section The Trouble Report signal of time, and export the Trouble Report to the protection control module and the outer signal output end and believe Number；The protection control module, the output end of the protection control module are connected with Balance route chip, the protection control Module is used to receive the Trouble Report signal, to the Balance route chip output services stop signal, controls the equilibrium Control chip is stopped.
- 2. cell equalizing protecting circuit according to claim 1, it is characterised in that also including reseting module, the reseting module Input be connected with outer signal input, the output end of the reseting module and the fault-signal keep the input of module End connection, for receiving the control signal of the outer signal input, module output is kept to reset letter to the fault-signal Number, control the fault-signal to keep module resets.
- 3. cell equalizing protecting circuit according to claim 1, it is characterised in that the under-voltage detection module includes first resistor Combination, second resistance combination and first comparator；Wherein, one end of the first resistor combination provides end with first voltage and is connected, the other end of the first resistor combination One end connection combined with the second resistance, the other end ground connection of the second resistance combination；The normal phase input end of the first comparator is connected with equalizing voltage sampling end, the inverting input of the first comparator One end of the other end combined with the first resistor and second resistance combination is all connected with, the output of the first comparator End is connected with the fault-signal trigger module.
- 4. cell equalizing protecting circuit according to claim 1, it is characterised in that the over-pressed detection module includes 3rd resistor Combination, the combination of the 4th resistance and the second comparator；Wherein, one end of the 3rd resistor combination provides end with second voltage and is connected, the other end of the 3rd resistor combination One end connection combined with the 4th resistance, the other end ground connection of the 4th resistance combination；What the other end and the 4th resistance that the normal phase input end of second comparator combines with the 3rd resistor combined One end is all connected with, and the inverting input of second comparator is connected with equalizing voltage sampling end, second comparator it is defeated Go out end to be connected with the fault-signal trigger module.
- 5. cell equalizing protecting circuit according to claim 1, it is characterised in that the fault-signal trigger module includes first Photo-coupler, first photo-coupler include the first light emitting diode and the first photosensitive semiconductor pipe；Wherein, the positive pole of first light emitting diode provides end with tertiary voltage and is connected, and first light emitting diode is born Pole is all connected with the output end of the under-voltage detection module and the output end of the over-pressed detection module；One end of the first photosensitive semiconductor pipe keeps the input of module to be connected with the fault-signal, and described first is photosensitive The other end ground connection of transistor.
- 6. cell equalizing protecting circuit according to claim 1, it is characterised in that the fault-signal keeps module to include first Transistor and second transistor；Wherein, the control terminal of the first transistor is connected with the output end of the fault-signal trigger module, and described first is brilliant The first end of body pipe provides end with the 4th voltage and is connected, and the second end of the first transistor connects with the outer signal output end Connect；The control terminal of the second transistor and the second end of the first transistor and the input of the protection control module It is all connected with, the first end ground connection of the second transistor, the second end of the second transistor and the fault-signal trigger mode The output end connection of block.
- 7. cell equalizing protecting circuit according to claim 1, it is characterised in that the protection control module includes the 3rd crystal Pipe and the second photo-coupler, second photo-coupler include the second light emitting diode and the second photosensitive semiconductor pipe；The control terminal of the third transistor keeps the output end of module to be connected with the fault-signal, the third transistor First end is grounded, and the second end of the third transistor is connected with the negative pole of second light emitting diode；The positive pole of second light emitting diode provides end with the 5th voltage and is connected；One end of the second photosensitive semiconductor pipe is connected with the Balance route chip, the second photosensitive semiconductor pipe it is another One end is grounded.
- 8. cell equalizing protecting circuit according to claim 2, it is characterised in that the reseting module includes the 4th transistor；The control terminal of 4th transistor is connected with the outer signal input, the first end of the 4th transistor and the Six voltages provide end connection, and the second end of the 4th transistor keeps the input of module to be connected with the fault-signal.
- 9. cell equalizing protecting circuit according to claim 1, it is characterised in that module also is provided including working signal, it is described Working signal provides the input of module and working signal provides end and is connected, and the working signal provides output end and the institute of module The connection of Balance route chip is stated, the working signal provides module and do not receive the Trouble Report for the protection control module During signal, working signal is provided for the Balance route chip.
- 10. cell equalizing protecting circuit according to claim 9, it is characterised in that the working signal, which provides module, to be included etc. Imitate resistance combination and diode；The first end of the equivalent resistance combination is connected with the Balance route chip, the second termination of the equivalent resistance combination Ground, the 3rd end of the equivalent resistance combination are connected with the negative pole of the diode；The positive pole of the diode provides end with the working signal and is connected.
- 11. a kind of battery equalization system, it is characterised in that include the balance protection electricity of any one in such as claim 1-10 Road.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720554558.3U CN207039214U (en) | 2017-05-18 | 2017-05-18 | Cell equalizing protecting circuit and battery equalization system |
| PCT/CN2017/093373 WO2018209787A1 (en) | 2017-05-18 | 2017-07-18 | Balancing protection circuit and battery balancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720554558.3U CN207039214U (en) | 2017-05-18 | 2017-05-18 | Cell equalizing protecting circuit and battery equalization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039214U true CN207039214U (en) | 2018-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720554558.3U Active CN207039214U (en) | 2017-05-18 | 2017-05-18 | Cell equalizing protecting circuit and battery equalization system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN207039214U (en) |
| WO (1) | WO2018209787A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196178A (en) * | 2018-11-16 | 2020-05-26 | 宁德时代新能源科技股份有限公司 | Conversion circuit, battery equalization system and battery management system |
| CN111293747A (en) * | 2020-02-26 | 2020-06-16 | 北斗(天津)科学技术应用研究院(有限合伙) | Circulation battery for distributed energy exchange system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8015452B2 (en) * | 2010-08-31 | 2011-09-06 | O2Micro International, Ltd. | Flexible bus architecture for monitoring and control of battery pack |
| CN103812153B (en) * | 2012-11-12 | 2018-05-18 | 芜湖宏宇汽车电子有限责任公司 | New-energy automobile active balancing formula BMS control modules and its control method |
| EP2903163B1 (en) * | 2014-02-04 | 2019-08-21 | Hittite Microwave LLC | Apparatus and methods for fast charge pump holdover on signal interruption |
| CN104167711B (en) * | 2014-09-02 | 2018-02-02 | 航天长峰朝阳电源有限公司 | The delay locked protection device of self-replaced type |
| CN106183872A (en) * | 2016-08-15 | 2016-12-07 | 陕西赛雷博瑞新能源科技有限公司 | Homogeneity between groups control system and control method thereof in a kind of set of cells |
-
2017
- 2017-05-18 CN CN201720554558.3U patent/CN207039214U/en active Active
- 2017-07-18 WO PCT/CN2017/093373 patent/WO2018209787A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196178A (en) * | 2018-11-16 | 2020-05-26 | 宁德时代新能源科技股份有限公司 | Conversion circuit, battery equalization system and battery management system |
| CN111293747A (en) * | 2020-02-26 | 2020-06-16 | 北斗(天津)科学技术应用研究院(有限合伙) | Circulation battery for distributed energy exchange system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018209787A1 (en) | 2018-11-22 |
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Effective date of registration: 20220126 Address after: 352100 science and technology building, No. 2, Xingang Road, Zhangwan Town, Jiaocheng District, Ningde City, Fujian Province Patentee after: Ningde Shidai Runzhi Software Technology Co.,Ltd. Address before: 352100 Xingang Road, Zhangwan Town, Jiaocheng District, Ningde, Fujian 1 Patentee before: Contemporary Amperex Technology Co.,Ltd. |