CN105553010A - Equalization circuit employing boost energy transfer and control method for equalization circuit - Google Patents
Equalization circuit employing boost energy transfer and control method for equalization circuit Download PDFInfo
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- CN105553010A CN105553010A CN201511010363.4A CN201511010363A CN105553010A CN 105553010 A CN105553010 A CN 105553010A CN 201511010363 A CN201511010363 A CN 201511010363A CN 105553010 A CN105553010 A CN 105553010A
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- Prior art keywords
- cell
- monomer voltage
- boost
- master controller
- boost module
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Classifications
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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
- 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
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an equalization circuit employing boost energy transfer and a control method for the equalization circuit. The equalization circuit comprises a detection module, a master controller and a boosting module, wherein the detection module is used for detecting a single voltage of each single battery in a battery pack and transmitting the detected single voltage to the master controller; the master controller judges whether the single voltage exceeds a preset threshold or not, connects the single battery of which the single voltage exceeds the threshold and an input end of the boosting module, and outputs a corresponding PWM control signal to a control end of the boosting module; and the boosting module corresponds to each single battery in the battery pack one by one, outputs the single voltage to storage batteries after boosting the single voltage at the input end according to the PWM control signal of the master controller, and charges the storage batteries. The equalization circuit outputs the single voltage to the storage batteries after boosting through the boosting module, and charges the storage batteries, so that energy transfer of the single battery with an over-high single voltage to the storage batteries is achieved; the storage batteries are charged when equalization of the battery pack is achieved; and heat caused by equalization of the battery pack is reduced through full utilization of energy.
Description
Technical field
The present invention relates to the technical field of new-energy automobile, more particularly, relate to a kind of equalizing circuit and control method thereof of boost type energy trasfer.
Background technology
When concentrating charging before needing to dispatch from the factory to multiple cell or battery pack in engineer applied, because the performance parameter of each battery cell or battery pack is inconsistent, there is the differences such as ability to accept, self-discharge rate, capacity attenuation speed when charging between each cell, the rechargeable energy of each cell can be caused inconsistent.And the quantity of electric charge gap that each cell in battery pack stores is by increasing, in divergent trend, the easy like this discreteness of the cell of internal battery pack that causes increases, and even the performance degradation of individual monomers battery can aggravate, and then causes whole battery pack to lose efficacy.The balanced road of present stage is all adopt series resistor, the method consuming excess energy or charged by resistance; But the method waste energy resource, and easily make circuit board heating.
Summary of the invention
The object of the invention is to overcome above-mentioned defect of the prior art, a kind of equalizing circuit and control method thereof of boost type energy trasfer is provided, realizes unnecessary energy trasfer.
For achieving the above object, technical scheme provided by the invention is as follows:
The equalizing circuit of a kind of boost type energy trasfer provided by the invention, comprising:
For detecting the monomer voltage of each cell in battery pack, and detected monomer voltage is transferred to the detection module of master controller;
According to judging whether monomer voltage exceedes default threshold value, the input of the cell and boost module that monomer voltage are exceeded threshold value is connected, and exports the master controller of corresponding pwm control signal to the control end of boost module;
With each cell one_to_one corresponding in battery pack, and output to storage battery, the boost module charged a battery after being boosted by the monomer voltage of input according to the pwm control signal of master controller.
As preferred technical scheme, described boost module adopts DC-DC booster circuit structure.
As preferred technical scheme, described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
As preferred technical scheme, described switching tube V1 is triode or metal-oxide-semiconductor.
As preferred technical scheme, described storage battery is Vehicular accumulator cell 24V+.
Present invention also offers a kind of control method of equalizing circuit of boost type energy trasfer, comprise the steps:
(1) detection module detects the monomer voltage of each cell in battery pack in real time, and the monomer voltage of each cell is transferred to master controller;
(2) monomer voltage is exceeded the connection of the boost module corresponding to cell of threshold value by master controller;
(3) master controller exports the control end of pwm control signal to corresponding boost module of corresponding duty ratio according to the monomer voltage of cell;
(4) boost module outputs to storage battery after being boosted by monomer voltage, charges a battery, by the energy trasfer of cell too high for monomer voltage to storage battery.
As preferred technical scheme, step (2) is specially:
Received monomer voltage compares with the threshold value preset by master controller one by one, select the cell that monomer voltage exceedes threshold value, and the switch S of cell monomer voltage the being exceeded threshold value booster circuit corresponding with it closes, the boost module making cell corresponding with it is communicated with.
As preferred technical scheme, described boost module adopts DC-DC booster circuit structure.
As preferred technical scheme, described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
As preferred technical scheme, described switching tube V1 is triode or metal-oxide-semiconductor.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention is carrying out equilibrium to cell, by unnecessary energy trasfer, both ensure that the magnitude of voltage of the single battery in battery pack is in normal working range, can also charge to reserve cell, and unnecessary heat can also have been avoided to cause harmful effect in the circuit board simultaneously.
2, equalizing circuit structure of the present invention is simple, easily operates, is applicable to the production of heavy industrialization.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of the equalizing circuit of the boost type energy trasfer that the embodiment of the present invention one provides;
Fig. 2 is the flow chart of the control method of the equalizing circuit of the boost type energy trasfer that the embodiment of the present invention two provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one
Embodiments of the invention one provide a kind of equalizing circuit of boost type energy trasfer, and Fig. 1 is the structure chart of the embodiment of the present invention one, please refer to Fig. 1, and this equalizing circuit comprises:
For detecting the monomer voltage of each cell in battery pack, and detected monomer voltage is transferred to the detection module of master controller;
According to judging whether monomer voltage exceedes default threshold value, the input of the cell and boost module that monomer voltage are exceeded threshold value is connected, and exports the master controller of corresponding pwm control signal to the control end of boost module;
With each cell one_to_one corresponding in battery pack, and output to storage battery, the boost module charged a battery after being boosted by the monomer voltage of input according to the pwm control signal of master controller.
In the present embodiment, described boost module adopts DC-DC booster circuit structure, then composition graphs 1,
Described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, and ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
In the present embodiment, described switching tube V1 is triode or metal-oxide-semiconductor.
Described storage battery is Vehicular accumulator cell 24V+, certainly selects the on-vehicle battery of other models equally within protection scope of the present invention.
The present invention is carrying out equilibrium to cell, by unnecessary energy trasfer, both ensure that the magnitude of voltage of the single battery in battery pack is in normal working range, can also charge to reserve cell, and unnecessary heat can also have been avoided to cause harmful effect in the circuit board simultaneously.
Embodiment two
Embodiments of the invention two provide a kind of control method of equalizing circuit of boost type energy trasfer, and Fig. 2 is the method flow diagram of the embodiment of the present invention two, please refer to Fig. 2, and the method for the embodiment of the present invention comprises the following steps:
Step S101, detection module detect the monomer voltage of each cell in battery pack in real time, and the monomer voltage of each cell is transferred to master controller;
The boost module corresponding to cell that monomer voltage is exceeded threshold value by step S102, master controller is communicated with;
Step S103, master controller export the control end of pwm control signal to corresponding boost module of corresponding duty ratio according to the monomer voltage of cell;
Step S104, boost module output to storage battery after being boosted by monomer voltage, charge a battery, by the energy trasfer of cell too high for monomer voltage to storage battery.
The present invention is carrying out equilibrium to cell, by unnecessary energy trasfer, both ensure that the magnitude of voltage of the single battery in battery pack is in normal working range, can also charge to reserve cell, and unnecessary heat can also have been avoided to cause harmful effect in the circuit board simultaneously.
Embodiment three
Embodiments of the invention three provide a kind of control method of equalizing circuit of boost type energy trasfer, are the further improvement of the control method to embodiment 2, then composition graphs 1, and the concrete grammar of the present embodiment is:
Step S201, detection module detect the monomer voltage of each cell in battery pack in real time, and the monomer voltage of each cell is transferred to master controller;
The boost module corresponding to cell that monomer voltage is exceeded threshold value by step S202, master controller is communicated with, and it is specially:
Received monomer voltage compares with the threshold value preset by master controller one by one, select the cell that monomer voltage exceedes threshold value, and the switch S of cell monomer voltage the being exceeded threshold value booster circuit corresponding with it closes, the boost module making cell corresponding with it is communicated with
Described boost module adopts DC-DC booster circuit structure, composition graphs 1 again, described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
In the present embodiment, above-mentioned switching tube V1 is triode or metal-oxide-semiconductor.
Step S203, master controller export the control end of pwm control signal to corresponding boost module of corresponding duty ratio according to the monomer voltage of cell;
Step S204, boost module output to storage battery after being boosted by monomer voltage, charge a battery, by the energy trasfer of cell too high for monomer voltage to storage battery.
By the technical scheme of the present embodiment, realize, by the energy trasfer of cell too high for monomer voltage to storage battery, while realizing battery pack balancing, charging a battery, making full use of of energy, reduces the heat that battery pack balancing brings.
It should be noted that at this, one of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. an equalizing circuit for boost type energy trasfer, is characterized in that, comprising:
For detecting the monomer voltage of each cell in battery pack, and detected monomer voltage is transferred to the detection module of master controller;
According to judging whether monomer voltage exceedes default threshold value, the input of the cell and boost module that monomer voltage are exceeded threshold value is connected, and exports the master controller of corresponding pwm control signal to the control end of boost module;
With each cell one_to_one corresponding in battery pack, and output to storage battery, the boost module charged a battery after being boosted by the monomer voltage of input according to the pwm control signal of master controller.
2. the equalizing circuit of boost type energy trasfer according to claim 1, is characterized in that,
Described boost module adopts DC-DC booster circuit structure.
3. the equalizing circuit of boost type energy trasfer according to claim 2, is characterized in that,
Described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, and ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
4. the equalizing circuit of boost type energy trasfer according to claim 3, is characterized in that,
Described switching tube V1 is triode or metal-oxide-semiconductor.
5. the equalizing circuit of the boost type energy trasfer according to any one of claim 1-4, is characterized in that, described storage battery is Vehicular accumulator cell 24V+.
6. the control method of the equalizing circuit of the boost type energy trasfer according to any one of claim 1-5, is characterized in that, comprise the steps:
(1) detection module detects the monomer voltage of each cell in battery pack in real time, and the monomer voltage of each cell is transferred to master controller;
(2) monomer voltage is exceeded the connection of the boost module corresponding to cell of threshold value by master controller;
(3) master controller exports the control end of pwm control signal to corresponding boost module of corresponding duty ratio according to the monomer voltage of cell;
(4) boost module outputs to storage battery after being boosted by monomer voltage, charges a battery, by the energy trasfer of cell too high for monomer voltage to storage battery.
7. the control method of the equalizing circuit of boost type energy trasfer according to claim 6, is characterized in that, step (2) is specially:
Received monomer voltage compares with the threshold value preset by master controller one by one, select the cell that monomer voltage exceedes threshold value, and the switch S of cell monomer voltage the being exceeded threshold value booster circuit corresponding with it closes, the boost module making cell corresponding with it is communicated with.
8. the control method of the equalizing circuit of boost type energy trasfer according to claim 6, is characterized in that, described boost module adopts DC-DC booster circuit structure.
9. the control method of the equalizing circuit of boost type energy trasfer according to claim 6, it is characterized in that, described boost module comprises: switch S, inductance L 1, switching tube V1, diode VD1, electric capacity C1 and resistance R1, one end of switch S is connected with cell, the other end is connected with one end of inductance L 1, ground connection after inductance L 1 other end tandem tap pipe V1, connects the positive pole of diode VD1 simultaneously; After electric capacity C1 and resistance R1 forms parallel branch, parallel branch one end is connected with the negative pole of diode VD1, other end ground connection, and the node that parallel branch is connected with diode VD1 is connected with storage battery as the output of boost module.
10. the control method of the equalizing circuit of boost type energy trasfer according to claim 9, is characterized in that, described switching tube V1 is triode or metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010363.4A CN105553010A (en) | 2015-12-26 | 2015-12-26 | Equalization circuit employing boost energy transfer and control method for equalization circuit |
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| CN201511010363.4A CN105553010A (en) | 2015-12-26 | 2015-12-26 | Equalization circuit employing boost energy transfer and control method for equalization circuit |
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| CN105553010A true CN105553010A (en) | 2016-05-04 |
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| CN201511010363.4A Pending CN105553010A (en) | 2015-12-26 | 2015-12-26 | Equalization circuit employing boost energy transfer and control method for equalization circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591860A (en) * | 2017-09-24 | 2018-01-16 | 中盐安徽红四方锂电有限公司 | Battery balanced control method based on energy transfer |
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| CN107591860A (en) * | 2017-09-24 | 2018-01-16 | 中盐安徽红四方锂电有限公司 | Battery balanced control method based on energy transfer |
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Application publication date: 20160504 |