CN103378618A - All-day real-time initiative energy equalizing method - Google Patents
All-day real-time initiative energy equalizing method Download PDFInfo
- Publication number
- CN103378618A CN103378618A CN 201210116285 CN201210116285A CN103378618A CN 103378618 A CN103378618 A CN 103378618A CN 201210116285 CN201210116285 CN 201210116285 CN 201210116285 A CN201210116285 A CN 201210116285A CN 103378618 A CN103378618 A CN 103378618A
- Authority
- CN
- China
- Prior art keywords
- voltage
- battery
- batteries
- equalization
- processing unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the field of battery managing systems, and discloses an all-day real-time initiative energy equalization method. The device adopting the method is composed of a battery voltage detecting circuit, an equalization switch, an equalization resistor, a battery set and a central processing unit. The central processing unit can be communicated with the voltage detecting circuit. The voltage detecting circuit is connected with the equalization switch, and the equalization switch is connected with the equalization resistor and the battery set. When the central processing unit detects that the voltage difference between the voltage of a certain battery and the voltage of one battery with the lowest voltage among all batteries reaches a certain value and the voltage of the battery is higher than equalization starting voltage, the equalization circuit of the battery is closed, and redundant electric quantity of the battery is released through the equalization resistor; when the voltage difference between the voltage of the battery and the voltage of the battery with the lowest voltage is smaller than the equalization shutting voltage difference, the equalization circuit of the battery is opened, and equalization is stopped. By means of the method, the battery set is equalized, heat dissipation is low, the equalizing effect is good, the circuit is simple and reliable, and the method has wide applied prospects.
Description
Technical field
The invention belongs to the battery management system field, relate to a kind of round-the-clock real-time active energy equalization methods.
Background technology
Along with the development of society, use lithium battery more and more extensive as the application of power, the employing lithium batteries such as electric automobile, electric motorcycle, electronic vista car, back power supply occur in succession as the product of its power output.In numerous application, all need lithium battery to use in groups, rather than realized by a single batteries.The configurable like this battery pack that goes out different voltages, different capabilities, different output power is to satisfy various applied environment demand.
After lithium battery uses in groups, just unavoidably can run into the inconsistent problem of each batteries capacity in the battery pack, this problem is the difference by the material in the battery production process, production technology, and the difference of battery pack environment for use produces.When the lithium battery group was used, the situations such as over-charging of battery, mistake are put in order to avoid, excess temperature occured, and usually understand the matching battery baffle and use together.The effect of baffle is all cell voltages of monitoring, when a certain batteries voltage is lower than set point, closes battery power discharge; When certain batteries voltage is higher than set point, close batteries charging.Also has a very important function in the baffle; be exactly balanced, after certain batteries voltage is higher than balanced cut-in voltage, will open the equalizer switch of this batteries; discharge the part energy of this batteries by equalizing resistance, thereby make all battery capacities consistent as far as possible.There is following shortcoming in this balanced way: (1) can only be in charging, and charging is about to complete the time, balanced just unlatching, and the time is very short.(2) because time for balance is short, reach good portfolio effect, just need very large euqalizing current, discharge as soon as possible the unnecessary capacity of this batteries.Larger euqalizing current can produce larger heat, and the common radiating condition of battery pack environment for use is bad, has so just limited the size of euqalizing current, can't obtain good portfolio effect for the application scenario of the larger equalizing circuit of needs.
Summary of the invention
The invention provides a kind of round-the-clock real-time active energy equalization methods.
The invention provides a kind of round-the-clock real-time active energy equalization methods, comprise battery voltage detection circuit, equalizer switch, equalizing resistance, battery pack, central processing unit.
Described round-the-clock real-time active energy equalization methods, the voltage difference that is detected between the battery that voltage is minimum in certain batteries voltage and all batteries by central processing unit reaches some values, and this batteries voltage is higher than balanced starting resistor, then open the equalizing circuit of this batteries, discharge the electric weight of this batteries by equalizing resistance, close voltage difference when this batteries voltage and lowest section cell voltage difference less than equilibrium, then close the equalizing circuit of this batteries, stop equilibrium.Because the central processing unit round-the-clock running, therefore, can realize round-the-clock battery pack being carried out equilibrium in 24 hours, with less euqalizing current, obtain to be equivalent to the effect of large current balance.
Use round-the-clock real-time active energy equalization methods of the present invention, can round-the-clockly carry out equilibrium to battery pack, reach the effect of large current balance with less euqalizing current, the heating problem of having avoided large current balance to follow has improved balanced range of application greatly.Especially for the application of the large current balance of needs, has great advantage.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, does not consist of to improper restriction of the present invention, in the accompanying drawings:
Fig. 1 is a kind of round-the-clock real-time active energy equalization methods provided by the invention.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, be used for explaining the present invention in this illustrative examples of the present invention and explanation, but not as a limitation of the invention.
Embodiment 1:
Fig. 1 is a kind of round-the-clock real-time active energy equalization methods provided by the invention, and as can be seen from Figure 1, resistance R is equalizing resistance, K is equalizer switch, battery pack links to each other with resistance R, and equalizer switch links to each other with voltage detecting circuit, and voltage detecting circuit links to each other with central processing unit.Central processing unit is by communicating by letter with voltage detecting circuit, can obtain each batteries voltage, the economize on electricity pressure reduction that voltage is minimum in certain batteries voltage and all batteries reaches the poor V1 of balanced cut-in voltage, and this batteries voltage is higher than balanced starting resistor Von, then central processing unit is notified voltage detecting circuit, open the equalizer switch of this batteries, make this batteries discharge electric energy by equalizing resistance R.Close voltage difference V2 when this batteries voltage and lowest section voltage difference less than equilibrium, then close the equalizer switch of this batteries, stop the equilibrium of this batteries.Therefore each batteries information of voltage of the round-the-clock monitoring of central processing unit, can realize round-the-clock balancing energy.
The round-the-clock real-time active energy equalization methods of the present invention has following characteristics: (1) 24 hour round-the-clock balancing energy, time for balance are longer than the balanced way in the present baffle greatly.(2) reached the effect of large current balance with less euqalizing current, heating is few, and is simple in structure, and dependable performance is with low cost.
More than technical scheme that the embodiment of the invention is provided be described in detail, used specific case herein principle and the execution mode of the embodiment of the invention are set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, all will change on embodiment and range of application, to sum up institute is near, and this description should not be construed as limitation of the present invention.
Claims (4)
1. a round-the-clock real-time active energy equalization methods is characterized in that: battery voltage detection circuit, equalizer switch, equalizing resistance, battery pack, central processing unit (CPU) composition.
Central processing unit links to each other with battery voltage detection circuit in the described method.
Battery voltage detection circuit links to each other with equalizer switch, equalizing resistance and battery pack in the described method.
Central processing unit can detect by battery voltage detection circuit the information of voltage of battery in the described method, simultaneously, can open or close equalizer switch by voltage detecting circuit, realizes the equilibrium control to each batteries of battery pack.
2. round-the-clock real-time active energy equalization methods according to claim 1 is characterized in that described central processing unit links to each other with battery voltage detection circuit.
3. round-the-clock real-time active energy equalization methods according to claim 1, it is characterized in that described central processing unit can pass through battery voltage detection circuit, obtain each batteries information of voltage and can realize opening and shutoff operation each equalizer switch by voltage detecting circuit.
4. round-the-clock real-time active energy equalization methods according to claim 1, it is characterized in that reaching some values when the voltage difference that central processing unit detects between the battery that voltage is minimum in certain batteries voltage and all batteries, and this batteries voltage is higher than the balanced starting resistor of setting, then open the equalizing circuit of this batteries, discharge the electric weight of this batteries by equalizing resistance, when this batteries voltage and lowest section cell voltage difference are closed voltage difference less than the equilibrium of setting, then close the equalizing circuit of this batteries, stop equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210116285 CN103378618A (en) | 2012-04-19 | 2012-04-19 | All-day real-time initiative energy equalizing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210116285 CN103378618A (en) | 2012-04-19 | 2012-04-19 | All-day real-time initiative energy equalizing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103378618A true CN103378618A (en) | 2013-10-30 |
Family
ID=49463349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210116285 Pending CN103378618A (en) | 2012-04-19 | 2012-04-19 | All-day real-time initiative energy equalizing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103378618A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107444158A (en) * | 2017-08-10 | 2017-12-08 | 清华四川能源互联网研究院 | A kind of equalization methods of modular battery packet system |
| CN107919504A (en) * | 2017-12-15 | 2018-04-17 | 杰华特微电子（杭州）有限公司 | A kind of battery equalizing circuit and control method |
| CN108063293A (en) * | 2016-11-09 | 2018-05-22 | 比亚迪股份有限公司 | Battery pack balancing control method and control system |
| CN108233469A (en) * | 2017-12-28 | 2018-06-29 | 常州普莱德新能源电池科技有限公司 | Power battery balance control method and control device |
| CN111540965A (en) * | 2020-05-18 | 2020-08-14 | 上海采日能源科技有限公司 | Battery voltage balancing method and device and battery management system |
| US11571981B2 (en) | 2017-08-31 | 2023-02-07 | Byd Company Limited | Battery equalization system, vehicle, battery equalization method and storage medium |
-
2012
- 2012-04-19 CN CN 201210116285 patent/CN103378618A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108063293A (en) * | 2016-11-09 | 2018-05-22 | 比亚迪股份有限公司 | Battery pack balancing control method and control system |
| CN107444158A (en) * | 2017-08-10 | 2017-12-08 | 清华四川能源互联网研究院 | A kind of equalization methods of modular battery packet system |
| US11571981B2 (en) | 2017-08-31 | 2023-02-07 | Byd Company Limited | Battery equalization system, vehicle, battery equalization method and storage medium |
| CN107919504A (en) * | 2017-12-15 | 2018-04-17 | 杰华特微电子（杭州）有限公司 | A kind of battery equalizing circuit and control method |
| CN108233469A (en) * | 2017-12-28 | 2018-06-29 | 常州普莱德新能源电池科技有限公司 | Power battery balance control method and control device |
| CN108233469B (en) * | 2017-12-28 | 2020-04-07 | 常州普莱德新能源电池科技有限公司 | Power battery balance control method and control device |
| CN111540965A (en) * | 2020-05-18 | 2020-08-14 | 上海采日能源科技有限公司 | Battery voltage balancing method and device and battery management system |
| CN111540965B (en) * | 2020-05-18 | 2021-10-08 | 上海采日能源科技有限公司 | Battery voltage balancing method and device and battery management system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103208828B (en) | A kind of series-connected cell group management system | |
| CN103378618A (en) | All-day real-time initiative energy equalizing method | |
| US20140306666A1 (en) | Apparatus and Method for Battery Balancing | |
| CN101752624B (en) | Equalizing charge method and equalizing charge device for battery | |
| CN105024411A (en) | Intelligent power lithium ion battery management system and charging control method | |
| CN103094938B (en) | Battery series-parallel connection self-balancing device | |
| CN105489958A (en) | Parallel-connection-free large-capacity lithium ion battery module | |
| CN202206153U (en) | Battery module balance circuit | |
| CN104734260A (en) | Power battery equalizing charge method and system | |
| CN103904741B (en) | A kind of method of the energy storage device balance of voltage and system thereof | |
| CN105244974A (en) | Self-balance repair method and device | |
| CN104467064A (en) | Charging station having battery cell balancing system | |
| CN202997631U (en) | Energy consumption type battery charging equalization apparatus | |
| CN204794218U (en) | Passive equalizer circuit of group battery two -stage and use group battery of this circuit | |
| CN205388998U (en) | Nickel -hydrogen battery management system | |
| CN202840545U (en) | All-day real-time active energy equalization system | |
| CN101257220A (en) | Method for charging lithium ion batteries | |
| CN204334038U (en) | The charge/discharge balancing system of power battery pack | |
| CN204668971U (en) | Airborne lithium-ions battery group system | |
| CN105680534A (en) | Storage battery equalization charging device and charging control method | |
| CN107623343A (en) | The active equalization method and device of a kind of lithium ion battery | |
| CN203674739U (en) | Passive equalizer circuit | |
| CN103311583B (en) | A kind of apparatus and method being realized the equilibrium of lithium battery monomer by metal-oxide-semiconductor | |
| CN108110841A (en) | Battery equalizing circuit and battery equalizing circuit detection method | |
| CN107590617A (en) | A kind of battery pack equilibrium method based on Reasoning with Credibility model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Liu Diejun Document name: Notification of Passing Examination on Formalities |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |