CN108767949A - A kind of two-way active equalization of usable Switching Power Supply power supply manages system - Google Patents
A kind of two-way active equalization of usable Switching Power Supply power supply manages system Download PDFInfo
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- CN108767949A CN108767949A CN201811036570.0A CN201811036570A CN108767949A CN 108767949 A CN108767949 A CN 108767949A CN 201811036570 A CN201811036570 A CN 201811036570A CN 108767949 A CN108767949 A CN 108767949A
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- power supply
- circuit
- balancing disk
- primary side
- current
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- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 239000004065 semiconductor Substances 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 13
- 230000006698 induction Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000009414 blockwork Methods 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to electric vehicle charge and discharge electro-technical field, a kind of two-way active equalization management system of usable Switching Power Supply power supply, including direct-current switch power supply circuit, balanced gating circuit and balancing disk；The balancing disk includes the primary side circuit being connected with direct-current switch power supply circuit, and the secondary sideline road being connected with balanced gating circuit；It is also associated with supply voltage monitoring unit and Balance route unit on the direct-current switch power supply circuit；The supply voltage monitoring unit, when there is power supply overpressure situation, can export enabled for being monitored to balancing disk supply voltage to Balance route unit；The Balance route unit can control the primary side circuit and secondary side circuit on-off and current direction of balancing disk.The two-way active equalization management system of Switching Power Supply power supply that can be used can automatically control single battery (lithium battery) quantity of balancing disk charge and discharge direction and access, maintenance module normal work according to preset condition and monitoring feedback condition, system for this.
Description
Technical field
The present invention relates to the two-way of electric vehicle charge and discharge electro-technical field more particularly to a kind of power supply of usable Switching Power Supply
Active equalization manages system.
Background technology
Lithium ion battery has the characteristics such as high-energy density, high internal resistance, high voltage, high circulation number and low self-discharge rate,
But it is very high to the requirement for protecting circuit, crossing charge and discharge can all cause the decline of battery life to even result in cell damage, hair
It makes trouble former.Currently, lithium ion battery is widely used on electric vehicle, consistency of battery pack how is ensured, extending battery makes
The problem of with the service life and enabling electric vehicle safer, be urgent need to resolve.
Current major part BMS is all made of balancing technique to ensure that the consistency of Li-ion batteries piles, small part have higher
The two-way active equalization technology of effect, theory is shifted to lithium ion battery energy.Since number of batteries is many in battery pack
More and hardware cost considers that it is most common technology to carry out energy transfer using energy storage device；In general energy storage scene and spy
Under different vehicle application scene or in the case that electric vehicle startup power supply is damaged, no energy storage device carries out energy transfer, only with
Switching Power Supply is powered.Switching Power Supply characteristic is exactly that only can unidirectionally export energy (electric current) device, can not inwardly absorb energy,
When carrying out active equalization power supply, it can only can charge to single battery in active equalization, but in equilibrium to module for power supply
The electricity that single battery is released can cause to generate reverse current on Switching Power Supply current supply circuit, since Switching Power Supply can not absorb,
Arriving causes supply voltage to be constantly elevated, and finally results in Switching Power Supply and module and is protected or burnt out.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of two-way actives of usable Switching Power Supply power supply
Balanced management system, this can be used the two-way active equalization management system of Switching Power Supply power supply that Switching Power Supply power supply can be used, and
The single battery of balancing disk charge and discharge direction and access can be automatically controlled according to preset condition and monitoring feedback condition, system
(lithium battery) quantity, to avoid the problem that single battery balanced discharge causes Switching Power Supply and module to be protected or burnt out, dimension
Protect module normal work.
In order to achieve the above purpose, present invention employs technical solutions below：
A kind of two-way active equalization of usable Switching Power Supply power supply manages system, including direct-current switch power supply circuit,
Weigh gating circuit and balancing disk；The balancing disk includes the primary side circuit being connected with direct-current switch power supply circuit, and with it is balanced
The connected secondary sideline road of gating circuit, primary side circuit and secondary sideline road induction line each other；It is characterized in that：The direct current is opened
Supply voltage monitoring unit and Balance route unit are also associated in powered-down source circuit；The supply voltage monitoring unit, is used for
Balancing disk supply voltage is monitored, when there is power supply overpressure situation, can be exported to Balance route unit enabled；The equilibrium
The primary side circuit of plate is equipped with primary side metal-oxide-semiconductor, and the secondary sideline road of balancing disk is equipped with secondary side metal-oxide-semiconductor, primary side metal-oxide-semiconductor and secondary side
MOS pipes can be converted between direct current and alternating current；The balanced gating circuit includes a plurality of parallel branch, and every simultaneously
Connection branch road is respectively connected with single battery and gating metal-oxide-semiconductor；The Balance route unit control primary side metal-oxide-semiconductor and secondary side metal-oxide-semiconductor
Switching frequency, and gating metal-oxide-semiconductor switch；The Balance route unit can control the primary side circuit and pair of balancing disk
Side circuit on-off and current direction；In the balanced circuit of Balance route cell formation, it is in the equal of the single battery of discharge condition
The electric current total amount that weighs need to be less than or equal to the euqalizing current total amount of the single battery in charged state.It should be noted that：Herein
Signified primary side circuit and secondary sideline road induction line each other refer to primary side circuit or when secondary sideline road generates alternating current, can exist
Induced current is generated on other side's circuit, actually can be regarded as transformer.
Preferably, the balancing disk is equipped with multigroup, the primary side lines in parallel of multigroup balancing disk is in direct-current switch power supply electricity
On the road, and equipped with multigroup balanced gating circuit respectively with the secondary side connection of multigroup balancing disk.
Preferably, the secondary sideline road of the balancing disk is additionally provided with euqalizing current acquisition function module；The balanced electricity
Stream acquisition function module acquires active equalization electric current in real time, and in overcurrent, enabled to the output of Balance route unit.
Preferably, the equilibrium gating circuit is equipped with voltage acquisition module, the voltage acquisition module is for acquiring
Monomer battery voltage, and it is fed back to Balance route unit.
The present invention uses above-mentioned technical proposal, the technical solution to be related to a kind of two-way active of usable Switching Power Supply power supply
Balanced management system, the supply voltage monitoring unit in the two-way active equalization management system of Switching Power Supply power supply can be used to use for this
It is monitored in balancing disk supply voltage, Balance route unit then can be used for controlling switching single balancing disk charge and discharge direction and control
Metal-oxide-semiconductor is gated to open and close；Therefore it can be used the two-way active equalization management system of Switching Power Supply power supply can root using this
According to preset condition and monitoring feedback condition, system automatically controls single battery (the lithium electricity of balancing disk charge and discharge direction and access
Pond) quantity, to can avoid excess energy input switch power supply in balancing procedure, avoidable Switching Power Supply and usable switch electricity
The problem of two-way active equalization management system internal module of source power supply is protected or burnt out, ensures system worked well.
Description of the drawings
Fig. 1 is that the two-way active equalization management system of Switching Power Supply power supply can be used to be in two batteries balanced discharge states
Schematic diagram.
Fig. 2 is that the two-way active equalization management system of Switching Power Supply power supply can be used to be in a section equalizaing charge, and a section is equal
Weigh discharge condition schematic diagram.
Specific implementation mode
Below in conjunction with the accompanying drawings, the preferred embodiments of the invention are described in further detail.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
A kind of two-way active equalization management system of usable Switching Power Supply power supply as shown in Fig. 1~2, including direct current are opened
Powered-down source circuit a, equilibrium gating circuit b and balancing disk.The balancing disk includes the primary side being connected with direct-current switch power supply circuit a
Circuit c, and the secondary sideline road d, primary side circuit c and pair sideline road the d induction line each other that are connected with balanced gating circuit b,
The gating circuit b that weighs is equipped with single battery.It should be noted that：Signified primary side circuit c and pair sideline road d incudes each other herein
Circuit can generate induced current on other side's circuit, can actually manage when referring to primary side circuit c or pair sideline road d generation alternating currents
Solution is transformer 1.In wherein a kind of embodiment, the balancing disk is equipped with multigroup, the primary side circuit c parallel connections of multigroup balancing disk
It is connect respectively with the secondary sideline road d of multigroup balancing disk on direct-current switch power supply circuit a, and equipped with multigroup equilibrium gating circuit b.
On the direct-current switch power supply circuit a other than being equipped with Switching Power Supply 8, it is single to be also associated with supply voltage monitoring
Member 6 and Balance route unit 7.The supply voltage monitoring unit 6, for being monitored to balancing disk supply voltage, when powering
When overpressure situation, it can be exported to Balance route unit 7 enabled.The Balance route unit 7, can control the primary side of balancing disk
Circuit c and secondary sideline road d break-makes and current direction.Specifically, the primary side circuit c of the balancing disk is equipped with primary side MOS
The secondary sideline road d of pipe 2, balancing disk is equipped with secondary side metal-oxide-semiconductor 3 and euqalizing current acquires function module 9.The balanced gating electricity
Road b is equipped with voltage acquisition module 10, and voltage acquisition module 10 is used to acquire 4 voltage of single battery in same parallel branch,
And it is fed back to Balance route unit 7.In further preferred embodiment, every group of balanced gating circuit b may include a plurality of
Parallel branch is equipped with single battery 4 and gating metal-oxide-semiconductor 5 in every parallel branch.Balance route unit 7 controls primary side metal-oxide-semiconductor
2 and secondary side metal-oxide-semiconductor 3 switching frequency, power supply and single battery 4 in said program are all DC voltages, this is actively equal
Weighing apparatus design is to carry out electricity transfer by transformer 1 to exchange, and primary side metal-oxide-semiconductor 2 and secondary side metal-oxide-semiconductor 3 are main there are two function, the
One：Direct current is changed into alternating current, magnetic field conversion variation is provided and carries out electricity transfer.Second：By controlling primary side MOS pipes 2
It is different with secondary 3 switching frequency of side metal-oxide-semiconductor, 4 equalizaing charge of single battery, course of discharge control are carried out, it can be achieved that equilibrium is safe certainly
Dynamic switching and shutdown.The control of the Balance route unit 7 gating metal-oxide-semiconductor 5, to control the break-make of every parallel branch, you can
The corresponding balanced a certain section of selectivity.
In practice, each balancing disk can generally connect six section single batteries 4.The euqalizing current acquires function module
9 acquire active equalization electric current in real time；It is enabled to the output of Balance route unit 7 and in overcurrent；7 energy of Balance route unit
Enough quickly cut-out equalizing circuits, realize overcurrent protection.The voltage acquisition module 10 is for acquiring in same parallel branch
4 voltage of single battery, and it is fed back to Balance route unit 7.Further, the hardware of above-mentioned Balance route unit 7 is constituted
Balanced circuit structure, electric quantity monitoring feedback.To electricity calculate judge, under send out charge and discharge balancing control strategy, specifically acquire
4 voltage value of single battery carries out calculating maintenance energy balance according to record SOC chip and 4 charge and discharge electrographic recording of single battery；And
In balanced circuit constructed by the control unit 7 that weighs, the euqalizing current total amount of the single battery in discharge condition need to be less than or wait
In the euqalizing current total amount of the single battery in charged state.
It is the step of Balance route unit 7 builds balanced circuit below：
1. when using under 8 electric power thus supplied of Switching Power Supply, there is the euqalizing current for the single battery 4 for needing balanced discharge state
When total amount is more than in the euqalizing current total amount of single battery 4 for needing equalizaing charge state, meeting trigger module Switching Power Supply goes out
Existing overvoltage phenomenon.
2. supply voltage monitoring unit 6 monitors balancing disk supply voltage, it is defeated to can trigger supply voltage monitoring unit 6
It is enabled to go out overvoltage.
3. Balance route unit 7 receives the over-pressed trigger signal of supply voltage monitoring unit 6, while receiving voltage acquires mould
4 voltage condition of newest single battery that the acquisition of block 10 uploads, is judged.
4. according to structure is judged, Balance route unit 7 is by switching primary side metal-oxide-semiconductor 2, secondary side metal-oxide-semiconductor 3 and gating metal-oxide-semiconductor 5
Working condition, transformation monomer charge and discharge direction；To make supply voltage reduce, protection balance module, switch power module (electricity
It is vehicle-mounted DC/DC modules to change Switching Power Supply on electrical automobile).
Based on the above embodiment, combining shown in Figure of description (by taking two balancing disks as an example, and on each balancing disk
It is all connected with a section single battery 4), the explanation of working condition is carried out for this programme.
1. when carrying out two section 4 equalizaing charges of single battery, supply voltage monitoring unit 6 does not trigger, and Switching Power Supply is inside
Input uniform electric current, normal work.
2. when carrying out 4 equalizaing charge of section single battery, section 4 balanced discharge of single battery, supply voltage monitoring is single
Member 6 does not trigger, the inside input module operating current of Switching Power Supply, normal work.
3. when carrying out two section 4 balanced discharges of single battery, balancing disk supply voltage first is raised by moment, supply voltage
Monitoring unit 6 is triggered work, exports enable signal, and balancing disk control chip power supply is enabled to be switched shutdown, including PWM wave is defeated
Go out chip, secondary side constant-current source adjusting circuit, gating switch switching circuit to be turned off by protection, so that supply voltage is pulled low, safeguard mould
Block works normally.It can be controlled simultaneously by software, adjust balancing disk charge and discharge direction, saving 4 equilibrium of single battery by original two puts
Electricity is changed to a batteries equalizaing charge, a batteries balanced discharge, reaches energy transfer balance.
According to first monitoring, rear control, then the logic adjusted execute above-mentioned steps.
Above-mentioned technical proposal is related to a kind of two-way active equalization management system of usable Switching Power Supply power supply, this can be used
Supply voltage monitoring unit 6 in the two-way active equalization management system of Switching Power Supply power supply is used to supervise balancing disk supply voltage
It surveys, Balance route unit 7 then can be used for controlling switching single balancing disk charge and discharge direction and control gating metal-oxide-semiconductor is opened and closed
It closes.Therefore it can be used the two-way active equalization management system of Switching Power Supply power supply can be anti-according to preset condition and monitoring using this
Feedback condition, system automatically control single battery 4 (lithium battery) quantity of balancing disk charge and discharge direction and access, to can avoid
Excess energy input switch power supply in balancing procedure, the two-way active that can avoid Switching Power Supply and the power supply of usable Switching Power Supply are equal
The problem of weighing apparatus management system internal module is protected or burnt out, makes system worked well.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of two-way active equalization of usable Switching Power Supply power supply manages system, including direct-current switch power supply circuit, equilibrium
Gating circuit and balancing disk；The balancing disk includes the primary side circuit being connected with direct-current switch power supply circuit, and is selected with balanced
The connected secondary sideline road of circuit passband, primary side circuit and secondary sideline road induction line each other；It is characterized in that：The dc switch
Supply voltage monitoring unit and Balance route unit are also associated on power circuit；The supply voltage monitoring unit, for pair
Balancing disk supply voltage monitors, and when there is power supply overpressure situation, can be exported to Balance route unit enabled；The balancing disk
Primary side circuit be equipped with primary side metal-oxide-semiconductor, the secondary sideline road of balancing disk is equipped with secondary side metal-oxide-semiconductor, primary side metal-oxide-semiconductor and pair side MOS
Pipe can be converted between direct current and alternating current；The balanced gating circuit includes a plurality of parallel branch, every branch in parallel
Road is respectively connected with single battery and gating metal-oxide-semiconductor；The Balance route unit control primary side metal-oxide-semiconductor is opened with secondary side metal-oxide-semiconductor
Close frequency, and the switch of gating metal-oxide-semiconductor；The Balance route unit can control the primary side circuit of balancing disk and secondary sideline
Road break-make and current direction；In the balanced circuit of Balance route cell formation, the equilibrium electricity of the single battery in discharge condition
The euqalizing current total amount of the single battery in charged state need to be less than or equal to by flowing total amount.
2. a kind of two-way active equalization of usable Switching Power Supply power supply according to claim 1 manages system, feature
It is：The balancing disk is equipped with multigroup, and the primary side lines in parallel of multigroup balancing disk is on direct-current switch power supply circuit, and equipped with more
The balanced gating circuit of group respectively with the secondary side connection of multigroup balancing disk.
3. a kind of two-way active equalization of usable Switching Power Supply power supply according to claim 1 manages system, feature
It is：The secondary sideline road of the balancing disk is additionally provided with euqalizing current acquisition function module；The euqalizing current acquires function mould
Block acquires active equalization electric current in real time；It is enabled to the output of Balance route unit and in overcurrent.
4. a kind of two-way active equalization of usable Switching Power Supply power supply according to claim 1 manages system, feature
It is：The equilibrium gating circuit is equipped with voltage acquisition module, and the voltage acquisition module is for acquiring single battery electricity
Pressure, and it is fed back to Balance route unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036570.0A CN108767949A (en) | 2018-09-06 | 2018-09-06 | A kind of two-way active equalization of usable Switching Power Supply power supply manages system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811036570.0A CN108767949A (en) | 2018-09-06 | 2018-09-06 | A kind of two-way active equalization of usable Switching Power Supply power supply manages system |
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| CN108767949A true CN108767949A (en) | 2018-11-06 |
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| CN201811036570.0A Pending CN108767949A (en) | 2018-09-06 | 2018-09-06 | A kind of two-way active equalization of usable Switching Power Supply power supply manages system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110239396A (en) * | 2019-06-26 | 2019-09-17 | 山东大学 | Battery pack balancing module, system and control method based on two-way flyback converter |
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Address after: 310012 Room 201, 2 / F, Haichuang Park, CLP Haikang Group Co., Ltd., No. 198, aicheng street, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: HANGZHOU GOLD ELECTRONIC EQUIPMENT Inc.,Ltd. Address before: 310000 unit 17-20, floor 5, building 5, No. 2, kekekeyuan Road, Baiyang street, Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang Province Applicant before: HANGZHOU GOLD ELECTRONIC EQUIPMENT Inc.,Ltd. |