CN109066919A - A kind of Stringing cells bidirectional energy transfer device - Google Patents
A kind of Stringing cells bidirectional energy transfer device Download PDFInfo
- Publication number
- CN109066919A CN109066919A CN201811145072.XA CN201811145072A CN109066919A CN 109066919 A CN109066919 A CN 109066919A CN 201811145072 A CN201811145072 A CN 201811145072A CN 109066919 A CN109066919 A CN 109066919A
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- series
- battery
- cell group
- connected cell
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- 238000004146 energy storage Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
-
- H02J7/0022—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of Stringing cells bidirectional energy transfer device, including series-connected cell group, each battery in series-connected cell group is respectively connected with accumulator, and accumulator is connected with control circuit, and each battery in series-connected cell group also connects to the control circuit；Control circuit includes controller, and controller is connected with the first, second switching tube, and the grid of the first, second switching tube is connect with controller, and the drain electrode of first switch tube and the source electrode of second switch connect；Interlock function is realized by the on-off that the controller in control circuit controls the first, second switching tube, and then realizes single battery to energy two-way transfer between single battery in series-connected cell group using the unilateral conduction of switching tube；Realize that structure is simply at low cost, easy to use, small in size, applicability is extensive.
Description
Technical field
The present invention relates to energy transfer technique fields, shift and fill more specifically to a kind of Stringing cells bidirectional energy
It sets.
Background technique
As living standards of the people are continuously improved, the people need progress to expand material life, are related to the energy content of battery
The demand of transfer device also increasingly increases.
In reality, series-connected cell group is widely used, especially power battery pack, and concatenated battery cell number is got over
Come more, capacity is increasing.Concatenated battery cell number is more in battery pack, the more aobvious weight of the consistency of battery cell
It wants, and in the multiple charge and discharge of battery pack in use, the capacity volume variance of battery cell will be more and more obvious, to influence electricity
The service performance and service life of pond group.
It is therefore desirable to carry out equilibrium to battery cell with battery energy transfer circuits, reduce the difference between battery cell.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing a kind of at low cost, structure
Simple Stringing cells bidirectional energy transfer device.
The technical solution adopted by the present invention to solve the technical problems is:
Construct a kind of Stringing cells bidirectional energy transfer device, including series-connected cell group, wherein in the series-connected cell group
Each battery be respectively connected with accumulator, the accumulator is connected with each of control circuit, the series-connected cell group
Battery is also connect with the control circuit；The control circuit includes controller, and the controller is connected with first, second and opens
The grid of Guan Guan, first, second switching tube are connect with the controller, the drain electrode of the first switch tube and described the
The source electrode of two switching tubes connects.
Stringing cells bidirectional energy transfer device of the present invention, wherein the accumulator includes inductance and electric group,
The anode of the first battery in the series-connected cell group and the inductance connection, the other end of the inductance and the resistance connect
It connects.
Stringing cells bidirectional energy transfer device of the present invention, wherein the other end of the resistance is also with described
The drain electrode of one switching tube connects, and the other end of the inductance is also connect with the controller, first in the series-connected cell group
The cathode of battery is connect with the source electrode of the first switch tube, the anode of the second battery in the series-connected cell group and described the
The drain electrode of two switching tubes connects.
Stringing cells bidirectional energy transfer device of the present invention, wherein the series-connected cell group can also be series connection
Power supply group.
The beneficial effects of the present invention are: the logical of the first, second switching tube is controlled by the controller in control circuit
It is disconnected to realize interlock function, and then realize single battery to single battery in series-connected cell group using the unilateral conduction of switching tube
Between energy two-way transfer；Realize that structure is simply at low cost, easy to use, small in size, applicability is extensive.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below in conjunction with attached drawing and reality
Applying example, the invention will be further described, and the accompanying drawings in the following description is only section Example of the invention, for this field
For those of ordinary skill, without creative efforts, it can also be obtained according to these attached drawings other accompanying drawings:
Fig. 1 is the circuit diagram of the Stringing cells bidirectional energy transfer device of present pre-ferred embodiments.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Technical solution in example carries out clear, complete description, it is clear that and described embodiment is section Example of the invention, and
It is not all of embodiment.Based on the embodiment of the present invention, those of ordinary skill in the art are not before making the creative labor
Every other embodiment obtained is put, protection scope of the present invention is belonged to.
The Stringing cells bidirectional energy transfer devices of present pre-ferred embodiments as shown in Figure 1, include series-connected cell group 1,
Each battery in series-connected cell group 1 is respectively connected with accumulator 2, and accumulator 2 is connected with control circuit 3, series-connected cell group 1
In each battery also connect with control circuit 3；Control circuit 3 includes controller PWM Control, controller PWM
Control is connected with first, second switching tube Qnd, Qnu, the grid of first, second switching tube Qnd, Qnu with controller PWM
The drain electrode of Control connection, first switch tube Qnd is connect with the source electrode of second switch Qnu；Pass through the control in control circuit 3
The on-off that device PWM Control processed controls first, second switching tube Qnd, Qnu realizes interlock function, and then utilizes switching tube
Unilateral conduction realize single battery to energy two-way transfer between single battery in series-connected cell group 1；Realize structure letter
Single at low cost, easy to use, small in size, applicability is extensive.
As shown in Figure 1, accumulator 2 includes inductance Ln and electricity group Rn, the first battery BTn in series-connected cell group 1 is just
Pole is connect with inductance Ln, and the other end of inductance Ln is connect with resistance Rn；It can accomplish larger current using inductance Ln energy storage, and
Service life is long, ohmically voltage drop is controlled by controller PWM Control, to be precisely controlled the electric energy reserves of inductance Ln.
As shown in Figure 1, the other end of resistance Rn is also connect with the drain electrode of first switch tube Qnd, the other end of inductance Ln
It is connect with controller PWM Control, the cathode of the first battery BTn in series-connected cell group 1 and the source electrode of first switch tube Qnd
It connects, the anode of the second battery BTn+1 in series-connected cell group 1 is connect with the drain electrode of second switch Qnu；Utilize switching tube
Unilateral conduction realizes electric energy two-way transfer, realizes that structure is simply at low cost, applicability is extensive.
As shown in Figure 1, series-connected cell group 1 can also be series-connection power supplies group；To adapt to different demands.
Scene one；
By the energy transfer of BTn to BTn+1:
1, PWM Control controls Qnd conducting, Qnu cut-off, and BTn is formed into a loop by Ln and Rn, and electric energy is stored into Ln
On, the electric energy reserves of energy storage inductor Ln are controlled by the voltage drop on Rn；
2, Qnd is closed, the energy of Ln is discharged by Qnu to BTn+1, realizes transfer of the energy from BTn to BTn+1.
Scene two；
By the energy transfer of BTn+1 to BTn:
1, PWM Control controls Qnu conducting, Qnd cut-off, and BTn+1 is formed into a loop by Rn, Ln, and electric energy is stored into Ln
On, the electric energy reserves of energy storage inductor Ln are controlled by the voltage drop on Rn；
2, Qnu is closed, the energy of Ln is discharged by Qnd to Btn, realizes energy by the transfer of BTn+1 to BTn.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (4)
1. a kind of Stringing cells bidirectional energy transfer device, including series-connected cell group, which is characterized in that in the series-connected cell group
Each battery be respectively connected with accumulator, the accumulator is connected with each of control circuit, the series-connected cell group
Battery is also connect with the control circuit；The control circuit includes controller, and the controller is connected with first, second and opens
The grid of Guan Guan, first, second switching tube are connect with the controller, the drain electrode of the first switch tube and described the
The source electrode of two switching tubes connects.
2. Stringing cells bidirectional energy transfer device according to claim 1, which is characterized in that the accumulator includes
Inductance and electric group, the anode of the first battery in the series-connected cell group and the inductance connection, the other end of the inductance with
The resistance connection.
3. Stringing cells bidirectional energy transfer device according to claim 2, which is characterized in that the other end of the resistance
Also it is connect with the drain electrode of the first switch tube, the other end of the inductance is also connect with the controller, the series-connected cell
The cathode of the first battery in group is connect with the source electrode of the first switch tube, and the second battery in the series-connected cell group is just
Pole is connect with the drain electrode of the second switch.
4. Stringing cells bidirectional energy transfer device according to claim 1, which is characterized in that the series-connected cell group is also
It can be series-connection power supplies group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145072.XA CN109066919A (en) | 2018-09-29 | 2018-09-29 | A kind of Stringing cells bidirectional energy transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145072.XA CN109066919A (en) | 2018-09-29 | 2018-09-29 | A kind of Stringing cells bidirectional energy transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109066919A true CN109066919A (en) | 2018-12-21 |
Family
ID=64766694
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811145072.XA Pending CN109066919A (en) | 2018-09-29 | 2018-09-29 | A kind of Stringing cells bidirectional energy transfer device |
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| Country | Link |
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| CN (1) | CN109066919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231521A1 (en) * | 2022-05-31 | 2023-12-07 | 比亚迪股份有限公司 | Power supply device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248077A (en) * | 2012-02-08 | 2013-08-14 | 东莞赛微微电子股份有限公司 | Battery equalization circuit |
| CN108123508A (en) * | 2016-11-29 | 2018-06-05 | 张喜军 | A kind of fast battery equalization methods of Residual capacity prediction |
| CN209250266U (en) * | 2018-09-29 | 2019-08-13 | 深圳市快车道新能源发展有限公司 | A kind of Stringing cells bidirectional energy transfer device |
-
2018
- 2018-09-29 CN CN201811145072.XA patent/CN109066919A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248077A (en) * | 2012-02-08 | 2013-08-14 | 东莞赛微微电子股份有限公司 | Battery equalization circuit |
| CN108123508A (en) * | 2016-11-29 | 2018-06-05 | 张喜军 | A kind of fast battery equalization methods of Residual capacity prediction |
| CN209250266U (en) * | 2018-09-29 | 2019-08-13 | 深圳市快车道新能源发展有限公司 | A kind of Stringing cells bidirectional energy transfer device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231521A1 (en) * | 2022-05-31 | 2023-12-07 | 比亚迪股份有限公司 | Power supply device |
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