CN207098691U - Electrokinetic cell system and its equalizing circuit and electric automobile - Google Patents
Electrokinetic cell system and its equalizing circuit and electric automobile Download PDFInfo
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- CN207098691U CN207098691U CN201720948433.9U CN201720948433U CN207098691U CN 207098691 U CN207098691 U CN 207098691U CN 201720948433 U CN201720948433 U CN 201720948433U CN 207098691 U CN207098691 U CN 207098691U
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- electrokinetic cell
- voltage
- equalizer switch
- cell system
- equalizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The utility model discloses a kind of electrokinetic cell system and its equalizing circuit and electric automobile, wherein, equalizing circuit includes：Balanced loop, the corresponding both ends for being connected to electrokinetic cell, balanced loop include the first fuse, equalizer switch and equalizing resistance, connected after equalizer switch and equalizing resistance series connection with the first fuse；Voltage detection unit, by detecting the voltage on equalizer switch and equalizing resistance to generate voltage detecting value；Control unit, it is connected with voltage detection unit, whether control unit changes to judge whether equalizer switch occurs short circuit or open circuit fault when the time that electrokinetic cell system completes discharge and recharge reaching preset time by exporting balanced control signal to equalizer switch to control equalizer switch to turn on, and by voltage detecting value before and after judging equalizer switch conducting.Thus, it is possible to eliminate the influence of polarizing voltage in electrokinetic cell charge and discharge process, the accuracy of equalizer switch fault diagnosis is improved, and then improve the reliability of equalizing circuit.
Description
Technical field
It the utility model is related to automobile technical field, more particularly to a kind of equalizing circuit for electrokinetic cell system, one
Kind electrokinetic cell system and a kind of electric automobile.
Background technology
At present, BMS (Battery Management System, battery management system) passive balancing technique is in power
It is widely used in battery system, and is used as most important equalizer switch device, generally MOS in passive balancing technique
(Metal-Oxide-Semiconductor, metal-oxide-semiconductor) is managed, if short circuit or open circuit, meeting occurs in it
Cause equalizing circuit can not normal work, therefore, it is necessary to switching device carry out fault diagnosis.
However, in correlation technique, when carrying out fault diagnosis to switching device, easily cause diagnostic error, can not ensure
The reliability of equalizing circuit work.
Utility model content
The utility model is intended to one of technical problem at least solving in above-mentioned technology to a certain extent.Therefore, this reality
It is to propose a kind of equalizing circuit for electrokinetic cell system with a new purpose, the circuit can eliminate electrokinetic cell
The influence of polarizing voltage in charge and discharge process, so as to improve the accuracy of equalizer switch fault diagnosis, and then it can improve
The reliability of equalizing circuit.
Second purpose of the present utility model is to propose a kind of electrokinetic cell system.
3rd purpose of the present utility model is to propose a kind of electric automobile.
To reach above-mentioned purpose, the utility model first aspect proposes a kind of equilibrium electricity for electrokinetic cell system
Road, the electrokinetic cell system include multiple electrokinetic cells, and each electrokinetic cell is correspondingly arranged an equalizing circuit, described
Equalizing circuit includes：Balanced loop, the balanced loop are correspondingly connected to the both ends of the electrokinetic cell, the balanced loop bag
Include the first fuse, equalizer switch and equalizing resistance, after equalizer switch and the equalizing resistance series connection with first fuse
Series connection；Voltage detection unit, the voltage detection unit is by detecting the voltage on the equalizer switch and equalizing resistance with life
Into voltage detecting value；Control unit, described control unit are connected with the voltage detection unit, and described control unit is described dynamic
Power battery system complete time of discharge and recharge when reaching preset time by export balanced control signal to the equalizer switch with
Control the equalizer switch to turn on, and whether changed by the voltage detecting value before and after judging the equalizer switch conducting
To judge whether the equalizer switch occurs short circuit or open circuit fault.
According to the equalizing circuit of the present utility model for electrokinetic cell system, equilibrium is detected by voltage detection unit and opened
Close with the voltage on equalizing resistance to generate voltage detecting value, the time that control unit completes discharge and recharge in electrokinetic cell system reaches
To during preset time by exporting balanced control signal to equalizer switch to control equalizer switch to turn on, and by judging that equilibrium is opened
Whether voltage detecting value changes to judge whether equalizer switch occurs short circuit or open circuit fault before and after closing conducting.Thus, may be used
To eliminate the influence of polarizing voltage in electrokinetic cell charge and discharge process, so as to improve the accurate of equalizer switch fault diagnosis
Property, and then the reliability of equalizing circuit can be improved.
In addition, can also be had according to the utility model equalizing circuit for electrokinetic cell system set forth above as follows
Additional technical characteristic：
Specifically, the balanced loop also includes the second fuse, wherein, one end of first fuse with it is corresponding
The positive terminal of electrokinetic cell is connected, and the other end of first fuse is connected with one end of the equalizer switch, the equilibrium
The other end of switch is connected with one end of the equalizing resistance, the other end of the equalizing resistance and the one of second fuse
End is connected, and the other end of second fuse is connected with the negative pole end of corresponding electrokinetic cell.
Further, the equalizer switch is metal-oxide-semiconductor.
Specifically, the above-mentioned equalizing circuit for electrokinetic cell system also includes：First voltage-stabiliser tube, first voltage stabilizing
The anode of pipe is connected with one end of second fuse and the other end of the equalizing resistance respectively, first voltage-stabiliser tube
Negative electrode is connected with the other end of first fuse and the source electrode of the metal-oxide-semiconductor respectively；Second voltage-stabiliser tube, second voltage stabilizing
The anode of pipe is connected with the grid of the metal-oxide-semiconductor, the negative electrode of second voltage-stabiliser tube respectively with the source electrode of the metal-oxide-semiconductor and described
The other end of first fuse is connected；Current-limiting resistance, one end of the current-limiting resistance respectively with the grid of the metal-oxide-semiconductor and described
The anode of second voltage-stabiliser tube is connected, and the other end of the current-limiting resistance is connected with described control unit to receive the Balance route
Signal.
Specifically, the preset time is 30 minutes.
Specifically, the electric current of the electrokinetic cell system progress discharge and recharge is less than 5A.
Specifically, the SOC (State of Charge, state-of-charge, be also dump energy) of the electrokinetic cell is in
Between 20%-80%.
To reach above-mentioned purpose, the utility model second aspect proposes a kind of electrokinetic cell system, and it includes this practicality
The equalizing circuit for electrokinetic cell system described in new first aspect.
According to electrokinetic cell system of the present utility model, by the above-mentioned equalizing circuit for electrokinetic cell system,
When the time of completion discharge and recharge reaches preset time, then balanced control signal is exported to equalizer switch to control equalizer switch to lead
It is logical, and whether changed by voltage detecting value before and after judging equalizer switch conducting to judge whether equalizer switch occurs short circuit
Or open circuit fault, so as to eliminate the influence of polarizing voltage in electrokinetic cell charge and discharge process, improve equalizer switch failure and examine
Disconnected accuracy, and then improve the reliability of equalizing circuit.
To reach above-mentioned purpose, the utility model third aspect proposes a kind of electric automobile, and it includes the utility model
Electrokinetic cell system described in second aspect.
Electric automobile of the present utility model, by above-mentioned electrokinetic cell system, reach pre- in the time for completing discharge and recharge
If during the time, then balanced control signal is exported to equalizer switch to control equalizer switch to turn on, and by judging that equalizer switch is led
Whether logical front and rear voltage detecting value changes to judge whether equalizer switch occurs short circuit or open circuit fault, so as to eliminate
The influence of polarizing voltage in electrokinetic cell charge and discharge process, the accuracy of equalizer switch fault diagnosis is improved, and then improved balanced
The reliability of circuit.
Brief description of the drawings
The above-mentioned and/or additional aspect of the utility model and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, wherein,
Fig. 1 is the circuit topology according to the equalizing circuit for electrokinetic cell system of the utility model one embodiment
Figure；
Fig. 2 is the circuit topology according to the equalizing circuit for electrokinetic cell system of the utility model another embodiment
Figure.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
Below in conjunction with the accompanying drawings come describe the utility model embodiment be used for electrokinetic cell system equilibrium electricity, electrokinetic cell
System and electric automobile.
Fig. 1 is the circuit topology according to the equalizing circuit for electrokinetic cell system of the utility model one embodiment
Figure.Wherein, electrokinetic cell system includes multiple electrokinetic cells, and each electrokinetic cell 40 is correspondingly arranged an equalizing circuit；Such as Fig. 1
Shown, equalizing circuit includes：Balanced loop 10, voltage detection unit 20 and control unit 30.
Wherein, the corresponding both ends for being connected to electrokinetic cell 40 in balanced loop 10, balanced loop 10 include the first fuse X1,
Connected after equalizer switch Q1 and equalizing resistance R1, equalizer switch Q1 and equalizing resistance R1 series connection with the first fuse X1.Voltage is examined
Survey unit 20 and generate voltage detecting value V by detecting the voltage on equalizer switch Q1 and equalizing resistance R1input.Control unit 30
It is connected with voltage detection unit 20, control single 30 passes through when the time that electrokinetic cell system completes discharge and recharge reaching preset time
Output balanced control signal to equalizer switch Q1 with control equalizer switch Q1 turn on, and by judge equalizer switch Q1 conducting before and after
Voltage detecting value VinputWhether change to judge whether equalizer switch Q1 occurs short circuit or open circuit fault.
In embodiment of the present utility model, equalizer switch Q1 can be metal-oxide-semiconductor.Preset time can be 30 minutes or
More than 30 minutes.
Specifically, as shown in figure 1, by taking an electrokinetic cell 40 in electrokinetic cell system as an example, if Q1 is N-type MOS
Pipe, when the balanced control signal that control unit 30 exports is high level signal, Q1 conductings, when the balanced control of unit 30 processed output
When signal processed is low level signal, Q1 shut-offs, by carrying out switch control to Q1, the unnecessary electricity of electrokinetic cell 40 can be led to
Equalizing resistance R1 is crossed to consume.If Q1 occur short-circuit conditions and it is uncontrolled when, may result in the electricity of electrokinetic cell 40
Light is consumed by R1, battery occurs and crosses situation about putting.And if Q1 occur open circuit conditions and it is uncontrolled when, equalizing circuit can be caused
It is ineffective, the unnecessary electricity of electrokinetic cell 40 can not be consumed by equalizing resistance R1.
Therefore, it is necessary to carry out fault detect to equalizer switch Q1, Q1 and R1 before and after judging that equalizer switch Q1 is turned on can be passed through
On voltage whether change judge Q1 whether occur short circuit or open circuit fault.Specifically, when Q1 disconnects, equalizer switch
Voltage on Q1 and equalizing resistance R1 is voltage detecting value VinputEqual to the voltage V at the both ends of electrokinetic cell 40C.After Q1 conductings, by
In the electric current that about 100mA on balanced loop be present, and the first fuse X1 has certain internal resistance (milliohm level), the inspection of actual voltage
Measured value VinputFor the voltage V at the both ends of electrokinetic cell 40CSubtract the voltage V at X1 both endsX1, i.e. Vinput=VC-VX1.And normal
In theoretical calculation, about 20mV~30mV pressure difference (actual capabilities are larger, it is necessary to demarcate) before and after Q1 conductings, the pressure difference exists
In the sampling precision of control unit 30, therefore control unit 30 can pass through V before and after judging that Q1 is turned oninputWhether change with
Whether Q1 occurs short circuit or open circuit fault.If V before and after Q1 conductingsinputDo not change, then control unit 30 judges equalizer switch
Short circuit or open circuit fault occur for Q1；If V before and after Q1 conductingsinputHave about 20mV~30mV change (actual capabilities are larger,
Need to demarcate), then control unit 30 may determine that current equalization switch Q1 is in normal condition.
However, due to round operation of the lithium ion between both positive and negative polarity in electrokinetic cell 40, can cause in electrokinetic cell 40
It is uneven in the concentration short time of portion's ion, potential difference, i.e. polarizing voltage are externally formed, when electrokinetic cell 40 has electric current to pass through
When, it may occur that electrode deviate from the phenomenon of equilibrium electrod potential.Due to the influence of polarizing voltage, before and after may Q1 be turned on
VinputVoltage change covering, so as to cause equalizer switch Q1 wrong diagnosis.
Therefore, in embodiment of the present utility model, control unit 30 completes the time of discharge and recharge in electrokinetic cell system
When reaching 30min, that is, ensured under the last time of electrokinetic cell 40 that electricity, in 30min or more, then passes through judgement to this upper electric time
V before and after Q1 conductingsinputWhether change to judge whether Q1 occurs short circuit or open circuit fault.Thus, it is possible to eliminate polarization electricity
The influence of pressure, the accuracy of equalizer switch fault diagnosis is improved, and then improve security and the equalizing circuit that equalizer switch uses
Work reliability.
According to one embodiment of the present utility model, as shown in Fig. 2 the above-mentioned equalizing circuit for electrokinetic cell system
It can also include：Second fuse X2.Wherein, the positive terminal phase of the first fuse X1 one end and corresponding electrokinetic cell 40
Even, the first fuse X1 other end is connected with equalizer switch Q1 one end, equalizer switch the Q1 other end and equalizing resistance R1
One end be connected, the equalizing resistance R1 other end is connected with the second fuse X2 one end, the second fuse X2 other end with
The negative pole end of corresponding electrokinetic cell 40 is connected.
It is appreciated that because the first fuse X1 and the second fuse X2 have certain internal resistance (milliohm level), therefore it is real
The voltage detecting value V on borderinputFor the voltage V at the both ends of electrokinetic cell 40CSubtract the voltage V at X1 both endsX1With the voltage at X2 both ends
VX2, i.e. Vinput=VC-VX1-VX2。
Further, as shown in Fig. 2 the above-mentioned equalizing circuit for electrokinetic cell system can also include：First is steady
Pressure pipe D1, the second voltage-stabiliser tube D2 and current-limiting resistance R2.
Wherein, the first voltage-stabiliser tube D1 anode respectively with the second fuse X2 one end and equalizing resistance R1 other end phase
Even, the first voltage-stabiliser tube D1 negative electrode is connected with the first fuse X1 other end and metal-oxide-semiconductor Q1 source electrode respectively.Second voltage-stabiliser tube
D2 anode is connected with metal-oxide-semiconductor Q1 grid, the second voltage-stabiliser tube D2 negative electrode source electrode and the first fuse with metal-oxide-semiconductor Q1 respectively
The X1 other end is connected.Current-limiting resistance R2 one end is connected with metal-oxide-semiconductor Q1 grid and the second voltage-stabiliser tube D2 anode respectively, limit
The leakage resistance R2 other end is connected with control unit 30 to receive balanced control signal.
Specifically, the first voltage-stabiliser tube D1 can stablize the output voltage of electrokinetic cell 40, avoid due to electrokinetic cell 40
Output voltage change influences the normal work of equalizing circuit.Q1 grid voltage can be limited in the steady of D2 by the second voltage-stabiliser tube D2
Below pressure value, to protect metal-oxide-semiconductor Q1 grid not breakdown.Current-limiting resistance R1 plays metering function, prevents from flowing into Q1 grid
Electric current it is excessive, play a part of protect metal-oxide-semiconductor.
It should be noted that in embodiment of the present utility model, the electric current that electrokinetic cell system carries out discharge and recharge is less than
5A, to ensure the polarizing voltage of electrokinetic cell system much smaller than voltage detecting value V before and after Q1 unlatchingsinputVoltage change.Power
The SOC of battery 40 is between 20%-80%, further to eliminate the influence of polarizing voltage.
In summary, according to the equalizing circuit for electrokinetic cell system of the utility model embodiment, examined by voltage
For the voltage surveyed on unit detection equalizer switch and equalizing resistance to generate voltage detecting value, control unit is complete in electrokinetic cell system
By exporting balanced control signal to equalizer switch to control equalizer switch to turn on when reaching preset time into time of discharge and recharge,
And by judge equalizer switch conducting before and after voltage detecting value whether change with judge equalizer switch whether occur short circuit or
Open circuit fault.Thus, it is possible to the influence of polarizing voltage in electrokinetic cell charge and discharge process is eliminated, so as to improve equalizer switch
The accuracy of fault diagnosis, and then the reliability of equalizing circuit can be improved.
Embodiment of the present utility model also proposes a kind of electrokinetic cell system, and it includes above-mentioned being used for electrokinetic cell system
Equalizing circuit.
According to the electrokinetic cell system of the utility model embodiment, pass through the above-mentioned equilibrium electricity for being used for electrokinetic cell system
Road, when the time for completing discharge and recharge reaching preset time, then balanced control signal is exported to equalizer switch to control equilibrium to open
Conducting is closed, and whether is changed by voltage detecting value before and after judging equalizer switch conducting to judge whether equalizer switch occurs
Short circuit or open circuit fault, so as to eliminate the influence of polarizing voltage in electrokinetic cell charge and discharge process, improve equalizer switch event
Hinder the accuracy of diagnosis, and then improve the reliability of equalizing circuit.
In addition, embodiment of the present utility model also proposes a kind of electric automobile, it includes above-mentioned electrokinetic cell system.
Electric automobile described in the utility model embodiment, by above-mentioned electrokinetic cell system, complete discharge and recharge
When time reaches preset time, then balanced control signal is exported to equalizer switch to control equalizer switch to turn on, and pass through judgement
Whether voltage detecting value changes to judge whether equalizer switch occurs short circuit or open circuit fault before and after equalizer switch conducting, from
And the influence of polarizing voltage in electrokinetic cell charge and discharge process can be eliminated, the accuracy of equalizer switch fault diagnosis is improved, is entered
And improve the reliability of equalizing circuit.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (9)
1. a kind of equalizing circuit for electrokinetic cell system, it is characterised in that the electrokinetic cell system includes multiple power
Battery, each electrokinetic cell are correspondingly arranged an equalizing circuit, and the equalizing circuit includes：
Balanced loop, the balanced loop are correspondingly connected to the both ends of the electrokinetic cell, and the balanced loop includes first and protected
Dangerous silk, equalizer switch and equalizing resistance, connected after equalizer switch and the equalizing resistance series connection with first fuse；
Voltage detection unit, the voltage detection unit is by detecting the voltage on the equalizer switch and equalizing resistance to generate
Voltage detecting value；
Control unit, described control unit are connected with the voltage detection unit, and described control unit is in the electrokinetic cell system
It is described to control to the equalizer switch by exporting balanced control signal when the time that system completes discharge and recharge reaches preset time
Whether equalizer switch turns on, and changed by the voltage detecting value before and after judging the equalizer switch conducting to judge
State whether equalizer switch occurs short circuit or open circuit fault.
2. the equalizing circuit according to claim 1 for electrokinetic cell system, it is characterised in that the balanced loop is also
Including the second fuse, wherein, one end of first fuse is connected with the positive terminal of corresponding electrokinetic cell, and described first
The other end of fuse is connected with one end of the equalizer switch, the other end of the equalizer switch and the one of the equalizing resistance
End is connected, and the other end of the equalizing resistance is connected with one end of second fuse, the other end of second fuse
It is connected with the negative pole end of corresponding electrokinetic cell.
3. the equalizing circuit according to claim 2 for electrokinetic cell system, it is characterised in that the equalizer switch is
Metal-oxide-semiconductor.
4. the equalizing circuit according to claim 3 for electrokinetic cell system, it is characterised in that also include：
First voltage-stabiliser tube, the anode of first voltage-stabiliser tube respectively with one end of second fuse and the equalizing resistance
The other end is connected, the negative electrode of first voltage-stabiliser tube respectively with the other end of first fuse and the source electrode of the metal-oxide-semiconductor
It is connected；
Second voltage-stabiliser tube, the anode of second voltage-stabiliser tube are connected with the grid of the metal-oxide-semiconductor, the negative electrode of second voltage-stabiliser tube
It is connected respectively with the source electrode of the metal-oxide-semiconductor and the other end of first fuse；
Current-limiting resistance, one end of the current-limiting resistance respectively with the grid of the metal-oxide-semiconductor and the anode phase of second voltage-stabiliser tube
Even, the other end of the current-limiting resistance is connected with described control unit to receive the balanced control signal.
5. the equalizing circuit for electrokinetic cell system according to any one of claim 1-4, it is characterised in that described
Preset time is 30 minutes.
6. the equalizing circuit according to claim 1 for electrokinetic cell system, it is characterised in that the electrokinetic cell system
The electric current that system carries out discharge and recharge is less than 5A.
7. the equalizing circuit according to claim 1 for electrokinetic cell system, it is characterised in that the electrokinetic cell
SOC is between 20%-80%.
8. a kind of electrokinetic cell system, it is characterised in that including being used for power electric according to any one of claim 1-7
The equalizing circuit of cell system.
9. a kind of electric automobile, it is characterised in that including electrokinetic cell system according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948433.9U CN207098691U (en) | 2017-07-31 | 2017-07-31 | Electrokinetic cell system and its equalizing circuit and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948433.9U CN207098691U (en) | 2017-07-31 | 2017-07-31 | Electrokinetic cell system and its equalizing circuit and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207098691U true CN207098691U (en) | 2018-03-13 |
Family
ID=61543536
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720948433.9U Active CN207098691U (en) | 2017-07-31 | 2017-07-31 | Electrokinetic cell system and its equalizing circuit and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207098691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196156A (en) * | 2018-11-16 | 2020-05-26 | 宝沃汽车（中国）有限公司 | Equalization circuit fault detection method and system of battery monitoring unit and vehicle |
| CN112889198A (en) * | 2018-11-30 | 2021-06-01 | 北京比特大陆科技有限公司 | Voltage equalization circuit, voltage equalization method and equipment |
-
2017
- 2017-07-31 CN CN201720948433.9U patent/CN207098691U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111196156A (en) * | 2018-11-16 | 2020-05-26 | 宝沃汽车（中国）有限公司 | Equalization circuit fault detection method and system of battery monitoring unit and vehicle |
| CN112889198A (en) * | 2018-11-30 | 2021-06-01 | 北京比特大陆科技有限公司 | Voltage equalization circuit, voltage equalization method and equipment |
| CN112889198B (en) * | 2018-11-30 | 2023-01-20 | 北京比特大陆科技有限公司 | Voltage equalization circuit, voltage equalization method and equipment |
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