CN110556888A - Power supply system and operation method thereof - Google Patents
Power supply system and operation method thereof Download PDFInfo
- Publication number
- CN110556888A CN110556888A CN201910116558.9A CN201910116558A CN110556888A CN 110556888 A CN110556888 A CN 110556888A CN 201910116558 A CN201910116558 A CN 201910116558A CN 110556888 A CN110556888 A CN 110556888A
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- power
- power supply
- storage units
- supply system
- electric energy
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005611 electricity Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 16
- 238000010586 diagram Methods 0.000 description 7
- 239000013589 supplement Substances 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
a power supply system and its operation method, the power supply system is used for supplying power to a load, the power supply system includes a plurality of power storage units and controlling device, wherein the power storage unit electrical behavior connects the load, and each power storage unit has positive pole end and negative pole end; the control device is electrically connected with the positive end and the negative end of each electricity storage unit, detects the parameter value of each electricity storage unit, and outputs the supplementary electric energy to the positive end and the negative end of the corresponding electricity storage unit when the detected parameter value is smaller than a preset value, so that the supplementary electric energy and the electric energy of the electricity storage units jointly supply power to a load, and the electricity storage units can better accord with economic benefits and cannot influence the whole power supply device when one electricity storage unit is damaged or the efficiency is reduced.
Description
Technical Field
The present invention relates to supplying load power; in particular to a power supply system and an operation method thereof.
Background
fig. 1 is a schematic diagram of a conventional power supply device for supplying power to a load L, wherein the power supply device includes at least one battery pack 1, and the battery pack 1 is formed by connecting a plurality of battery cells 1a in series, and the battery cells 1a may also be formed by connecting the battery cells in parallel.
Taking a battery pack 1 as an example, when a battery cell 1a with poor performance exists in the battery pack 1, the efficiency of supplying power to the load L by the battery pack 1 is poor due to the battery cell 1a with poor performance, so that manufacturers can detect the battery cell 1a when producing the battery pack 1, and match the battery cells 1a with similar characteristics to make the battery pack 1, so as to avoid the occurrence of poor efficiency when the battery pack 1 leaves the factory, but the process of detecting the battery pack 1 needs to consume a lot of time, which causes poor production benefits.
In addition, although the battery cells 1a are detected after being shipped from a factory, the battery cells 1a still have the possibility of aging or damage, and when the performance of the battery pack 1 is reduced and only one of the battery cells 1a in the battery pack 1 is damaged or reduced in performance, the battery pack 1 is replaced, which is extremely environmentally-friendly and not in accordance with economic benefits.
referring to fig. 2, another conventional power supply device includes a plurality of battery packs 2 connected in series, and if one of the battery packs 2 is deteriorated or damaged, the performance of the whole power supply device is also affected.
Disclosure of Invention
In view of the above, the present invention provides a power supply system and an operating method thereof, which can provide an additional energy to supplement the insufficient energy output from the power storage unit to the load when the power storage unit is damaged or the performance of the power storage unit is reduced.
In order to achieve the above object, the present invention provides a power supply system for supplying power to a load, comprising: the power supply system comprises a plurality of power storage units and a control device, wherein the power storage units are electrically connected with a load and each power storage unit is provided with a positive end and a negative end; the control device is electrically connected with the positive electrode ends and the negative electrode ends of the plurality of electricity storage units, detects a parameter value of each electricity storage unit, and outputs a supplementary electric energy to the positive electrode end and the negative electrode end of the corresponding electricity storage unit when the detected parameter value is smaller than a preset value, so that the supplementary electric energy and the electric energy of the plurality of electricity storage units jointly supply power to the load.
The invention provides an operation method of a power supply system, the power supply system is used for supplying power to a load, the power supply system comprises a plurality of power storage units and a control device, wherein the control device is electrically connected with a positive terminal and a negative terminal of each power storage unit; B. judging whether the parameter value of any power storage unit is smaller than a preset value: if not, outputting the electric energy from the plurality of electricity storage units to the load; if yes, outputting a supplementary electric energy to the electricity storage unit with the parameter value smaller than the preset value, and supplying power to the load by the supplementary electric energy and the electric energy of the plurality of electricity storage units together.
The invention has the effects that the control device can detect the parameter values of each electricity storage unit, judge whether the electricity storage units need to supplement the electric energy according to the parameter values, and output the supplemented electric energy to the electricity storage units when the electricity is needed to be supplemented, so that the power supply system can stably supply power to the load, the whole power supply system cannot be influenced when one electricity storage unit is damaged or the efficiency is reduced, and the power supply system can achieve the purposes of energy conservation, environmental protection and economic benefit.
Drawings
FIG. 1 is a schematic diagram of a conventional power supply device for supplying power to a load;
FIG. 2 is a schematic diagram of another conventional power supply device for supplying power to a load;
FIG. 3 is a block diagram of a power supply system according to a first preferred embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the detection module detecting each parameter value of each battery cell and sending a power compensation signal to the power compensation unit;
Fig. 5 is a schematic diagram illustrating the power supply unit supplying power to each battery cell;
FIG. 6 is a flowchart of a method for operating the power supply system of the first preferred embodiment;
Fig. 7 is a block diagram of a power supply system according to a second preferred embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 3, a power supply system according to a first preferred embodiment of the present invention is used for supplying power to a load L, and the power supply system includes a battery pack 3 and a control device 10, the battery pack 3 is electrically connected to the load L, the battery pack 3 includes a plurality of battery cells 20 connected in series, the battery cells 20 form a plurality of power storage units according to the present embodiment, and each battery cell 20 has a positive terminal 20a and a negative terminal 20 b.
The control device 10 is electrically connected to the load L, and includes a detection module 12 and a power-up module 14, wherein the detection module 12 is electrically connected to the power-up module 14 and the positive terminal 20a and the negative terminal 20b of each battery cell 20; a power side 14a of the power-supplying module 14 is electrically connected to a power source P, and a load side 14b of the power-supplying module 14 and the positive terminal 20a and the negative terminal 20b of each battery cell 20.
Referring to fig. 4, the detecting module 12 is used for detecting a parameter value between the positive terminal 20a and the negative terminal 20b of each battery cell 20, and in the present embodiment, the parameter value includes a current between the positive terminal 20a and the negative terminal 20b of each battery cell 20. In other embodiments, the parameter values may further include a voltage difference between the positive terminal 20a and the negative terminal 20b of the battery cell 20, and the power of the battery cell 20, but not limited thereto.
Referring to fig. 5, in the present embodiment, the power-supplying module 14 determines whether to output a power supply to the positive terminal 20a and the negative terminal 20b of the corresponding battery cell 20 according to the parameter value of each battery cell 20 detected by the detecting module 12, and the power supply is a current in the present embodiment.
With the above-mentioned power supply system structure, the operation method of the present embodiment can be performed, and the operation method includes the following steps as shown in fig. 6:
first, in step S1, the detection module 12 detects the parameter value of each battery cell 20, and in this embodiment, the detection module 12 detects the current between the positive terminal 20a and the negative terminal 20b of the battery cell 20.
In step S2, the power-up module 14 compares each parameter value obtained by the detection module 12 with a predetermined value stored in the control device 10, and determines whether any parameter value of the battery cell 20 is smaller than the predetermined value. In the present embodiment, the predetermined value refers to a current value, wherein the current value is the lowest current that can be output by the battery cell 20 in the power supply system, and for example, may be set to 80% of the rated current value of the battery cell 20. In other embodiments, the predetermined value may be a voltage value or a power value corresponding to different types of parameter values (voltage difference, power).
If the parameter value of any battery cell 20 is smaller than the predetermined value, step S3 is executed, the power-supplying module 14 outputs the supplementary power to the positive terminal 20a and the negative terminal 20b of the battery cell 20 with the parameter value smaller than the predetermined value, and all the battery cells 20 and the supplementary power supply together supply power to the load L, so that the supplementary power can make up the power of the battery cell 20 that is not enough to supply power to the load L. In other embodiments, the supplementary power may be a voltage, and the supplementary voltage is for stabilizing the voltage.
If the parameter value of no battery cell 20 is smaller than the predetermined value, step S4 is executed to directly supply power to the load L from the plurality of battery cells 20.
By the power supply system and the operation method thereof according to the first preferred embodiment of the present invention, when the power supply system supplies power to the load, the power supply module supplements the electric energy to the battery cell with poor performance or damaged performance, so that the power supply system does not affect the overall power supply performance due to poor performance or damaged performance of the battery cell, and the service life of the power supply system is long.
Fig. 7 shows a power supply system according to a second preferred embodiment of the present invention, which includes a plurality of battery packs 4, and in this embodiment, a load side 10a of a control device 10 is electrically connected to a positive terminal 4a and a negative terminal 4b of the plurality of battery packs 4, and a power side 10b of the control device 10 is electrically connected to a power source P. The operation method of the power supply system is the same as that of the foregoing embodiment, that is, the control device 10 also includes a detection module 12 and a power supply module 14, where the detection module 12 is configured to detect a parameter value between the positive terminal 4a and the negative terminal 4b of each battery pack 4, and when the power supply module 14 determines that the parameter value is smaller than a predetermined value, the power supply module 14 outputs the supplementary power, so that the supplementary power can be supplied to at least one battery pack 4 when the performance of the battery pack 4 is reduced, so that the power supply system is maintained at a certain power supply level, and the overall power supply level of the power supply system is not reduced due to the performance reduction of the at least one battery pack 4.
In summary, in the power supply system and the operating method thereof of the present invention, the detection module detects the plurality of power storage units, and the power supplement module supplements power to the power storage units, so that the power supply system can maintain a certain power supply level, and more specifically, when the performance of the power storage unit is reduced or damaged, the power supply system of the present invention supplements the electric energy of the power storage unit by the power supplement module, so as to stably supply power to the load, and the whole power supply system is not affected when one of the power storage units is damaged or reduced in performance, so that the power supply system can achieve energy saving and environmental protection, and meet economic benefits.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.
description of the reference numerals
[ commonly used ]
1 Battery pack
1a battery core
2 Battery pack
[ present invention ]
3 Battery pack
4 Battery pack
4a positive terminal 4b negative terminal
10 control device
10a load side 10b power side 12 detection module
14 supply module 14a power supply side 14b load side
20 cell core
20a positive terminal 20b negative terminal
L load
p power supply
Claims (9)
1. A power supply system for supplying power to a load, comprising:
the plurality of power storage units are electrically connected with the load, and each power storage unit is provided with a positive electrode end and a negative electrode end;
The control device is electrically connected with the positive terminals and the negative terminals of the plurality of electricity storage units, detects a parameter value of each electricity storage unit, and outputs a supplementary electric energy to the positive terminal and the negative terminal of the corresponding electricity storage unit when the detected parameter value is smaller than a preset value, so that the supplementary electric energy and the electric energy of the plurality of electricity storage units are jointly supplied to the load.
2. The power supply system of claim 1, wherein the control device further comprises a detection module and a power-supplying module, the detection module is electrically connected to the power-supplying module and the positive terminal and the negative terminal of the plurality of power storage units, and the detection module detects a parameter value of each of the power storage units; the power supply module is electrically connected with a power supply and the positive terminals and the negative terminals of the plurality of power storage units, and outputs the supplementary electric energy to the positive terminal and the negative terminal of the corresponding power storage unit when the parameter value detected by the detection module is smaller than the preset value.
3. the power supply system according to claim 1, wherein the parameter value of each of the power storage units is a current between the positive terminal and the negative terminal thereof, and the supplementary electric energy is a current.
4. The power supply system of claim 1 wherein the plurality of power storage units are connected in series.
5. The power supply system according to claim 1, comprising a battery pack including a plurality of battery cells connected in series, the plurality of battery cells constituting the plurality of power storage units.
6. The power supply system according to claim 1, wherein the plurality of power storage units are a plurality of battery packs.
7. An operation method of a power supply system for supplying power to a load, the power supply system comprising a plurality of power storage units and a control device, wherein the control device is electrically connected to a positive terminal and a negative terminal of each of the power storage units, the operation method comprising the steps of:
A. Detecting, by the control device, a parameter value of each of the electricity storage units;
B. Judging whether the parameter value of any power storage unit is smaller than a preset value:
if not, outputting the electric energy of the plurality of electricity storage units to the load;
If yes, outputting a supplementary electric energy to the positive electrode end and the negative electrode end of the electricity storage unit of which the parameter value is smaller than the preset value, and supplying power to the load by the supplementary electric energy and the electric energy of the electricity storage units together.
8. The method according to claim 7, wherein the control device comprises a detection module and a power-up module; in step A, the detection module detects the parameter value of each electricity storage unit; in step B, the supplementary power is output by the supplementary module.
9. The method according to claim 7, wherein the parameter value in step a is a current between the positive terminal and the negative terminal of each of the power storage units; and the supplementary electric energy in step B is electric current.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107118762A TWI669876B (en) | 2018-05-31 | 2018-05-31 | Power supply system and its operating method |
| TW107118762 | 2018-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110556888A true CN110556888A (en) | 2019-12-10 |
Family
ID=68316773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910116558.9A Pending CN110556888A (en) | 2018-05-31 | 2019-02-13 | Power supply system and operation method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110556888A (en) |
| TW (1) | TWI669876B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545328A (en) * | 2010-08-05 | 2012-07-04 | E4V公司 | Battery balancing method and battery management system for implementing the method |
| CN102544608A (en) * | 2010-12-31 | 2012-07-04 | 欣旺达电子股份有限公司 | Full-charging static balancing method and system for automobile lithium battery |
| CN102545291A (en) * | 2010-12-29 | 2012-07-04 | 清华大学 | Solar power storage system and solar power supply system |
| US8248034B2 (en) * | 2010-03-29 | 2012-08-21 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Dry cell battery discharging system |
| CN102969772A (en) * | 2012-12-12 | 2013-03-13 | 山东省科学院自动化研究所 | Full-stage power lithium battery equalization method and device based on absolutely chargeable and dischargeable capacity |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI524628B (en) * | 2013-08-29 | 2016-03-01 | Battery Manager | |
| CN206060307U (en) * | 2016-09-28 | 2017-03-29 | 上海萨能电子科技有限公司 | A kind of accumulator cell charging and discharging bascule |
| TWM550930U (en) * | 2017-05-26 | 2017-10-21 | 烽曜股份有限公司 | Energy storage system |
-
2018
- 2018-05-31 TW TW107118762A patent/TWI669876B/en active
-
2019
- 2019-02-13 CN CN201910116558.9A patent/CN110556888A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8248034B2 (en) * | 2010-03-29 | 2012-08-21 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Dry cell battery discharging system |
| CN102545328A (en) * | 2010-08-05 | 2012-07-04 | E4V公司 | Battery balancing method and battery management system for implementing the method |
| CN102545291A (en) * | 2010-12-29 | 2012-07-04 | 清华大学 | Solar power storage system and solar power supply system |
| CN102544608A (en) * | 2010-12-31 | 2012-07-04 | 欣旺达电子股份有限公司 | Full-charging static balancing method and system for automobile lithium battery |
| CN102969772A (en) * | 2012-12-12 | 2013-03-13 | 山东省科学院自动化研究所 | Full-stage power lithium battery equalization method and device based on absolutely chargeable and dischargeable capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202005230A (en) | 2020-01-16 |
| TWI669876B (en) | 2019-08-21 |
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Application publication date: 20191210 |