CN103138317A - Balanced control circuit - Google Patents
Balanced control circuit Download PDFInfo
- Publication number
- CN103138317A CN103138317A CN2011103924012A CN201110392401A CN103138317A CN 103138317 A CN103138317 A CN 103138317A CN 2011103924012 A CN2011103924012 A CN 2011103924012A CN 201110392401 A CN201110392401 A CN 201110392401A CN 103138317 A CN103138317 A CN 103138317A
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- optical coupler
- resistance
- control circuit
- management system
- control signal
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a balanced control circuit. The balanced control circuit comprises an optical coupler and a filtering circuit. An input end of the optical coupler is used for receiving control signals sent by a cell management system, a collector electrode of the optical coupler is used for providing reference voltage, an emitting electrode of the optical coupler is connected with the filtering circuit, and the filtering circuit is used for receiving control signals transmitted by the emitting electrode of the optical coupler and outputting the filtered control signals. By adopting the technology scheme, the phenomenon that energy is consumed and the cell management system is damaged by heat energy can be avoided, equalization of charge and discharge of a cell can be effectively controlled, and the circuit is very practical.
Description
Technical field
The present invention relates to the battery charging and discharging balancing technique, particularly relate to a kind of balancing control circuit for battery charging and discharging.
Background technology
Balanced Bypass Control mode or the power consumption control mode of usually adopting of present lithium battery; as in lithium electricity charging process; if realize that certain batteries charging voltage reaches protection voltage in battery pack, close whole group of charging or with this batteries bypass or by the resistance consumption method, power consumption is fallen.
The inventor finds in realizing process of the present invention: existing balancing technique or off-energy, or can cause pyrolytic damage to other element in battery management system, and can not effectively control the time that discharges and recharges of battery.
Because the problem that above-mentioned existing balancing technique exists, the inventor is based on being engaged in this type of product design manufacturing abundant practical experience and professional knowledge for many years, and the utilization of cooperation scientific principle, positive research and innovation in addition, to founding a kind of balancing control circuit of new structure, can overcome the problem that existing balancing technique exists, make it have more practicality.Through continuous research and design, and through repeatedly studying sample and improvement, finally create the present invention who has practical value.
Summary of the invention
The object of the invention is to, overcome the problem that existing balancing control circuit exists, and provide a kind of balancing control circuit of new structure, technical problem to be solved is, avoid energy loss and heat energy that the element in battery management system is damaged, and the equilibrium in the time of can effectively realizing battery charging and discharging is controlled, and is very suitable for practicality.
Purpose of the present invention and solve its technical problem and can adopt following technical scheme to realize.
A kind of balancing control circuit according to the present invention proposes mainly comprises: optical coupler and filter circuit; The input of described optical coupler receives the control signal that battery management system sends, and the collector electrode of optical coupler provides reference voltage, and the emitter of described optical coupler is connected with this filter circuit; Described filter circuit receives the next control signal of emitter transmission of described optical coupler, and the control signal after output filtering.
Purpose of the present invention and solve its technical problem and can also be further achieved by the following technical measures.
Better, aforesaid balancing control circuit, wherein said optical coupler comprises: light-emitting diode and phototriode.
Better, aforesaid balancing control circuit, the input of wherein said optical coupler are connected with resistance R with resistance R 47 and are connected, and the control signal of described battery management system output transfers to the input of optical coupler by resistance R 47.
Better, aforesaid balancing control circuit, wherein filter circuit comprises: resistance R 46, resistance R 45, resistance R 44, capacitor C 21 and capacitor C 22; One end of described resistance R 46 is connected with the emitter of optical coupler, one end of described resistance R 45 and described resistance R 46 are connected emitter and all are connected with optical coupler, the other end of described resistance R 45 is connected with described capacitor C 22, one end of described resistance R 44 and described resistance R 45 be connected capacitor C 22 and all be connected, the other end of described resistance R 44 is connected with described capacitor C 21.
By technique scheme, balancing control circuit of the present invention has following advantages and beneficial effect at least: the present invention is connected with battery management system by the input with optical coupler, and optical coupler is connected with filter circuit, like this, when battery management system puts on balancing control circuit with control signal, balancing control circuit can normally be exported the needed voltage of battery or electric current, do not have control signal to put on balancing control circuit at battery management system, balancing control circuit can be exported by the autoshutdown power supply; Thereby the present invention not only can provide corresponding voltage or electric current for battery according to the control signal of battery management system output, has avoided energy loss and heat energy to the infringement of the element in battery management system, the equilibrium in the time of can also effectively controlling battery charging and discharging.
In sum, the present invention has significant progress technically, has obvious good effect, is really a new and innovative, progressive, practical new design.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above and other purpose of the present invention, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the schematic diagram of balancing control circuit of the present invention.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, embodiment, structure, feature and the effect thereof of the balancing control circuit that foundation the present invention is proposed are described in detail as follows.
Balancing control circuit of the present invention comprises: optical coupler and filter circuit.The input of optical coupler is connected with battery management system, and the output of optical coupler is connected with the input of filter circuit, and the collector electrode of optical coupler provides reference voltage.The input of optical coupler receives the control signal that battery management system sends.Filter circuit receives the next control signal of emitter transmission of optical coupler, and the control signal after output filtering
Concrete, optical coupler in the present invention can be for comprising the optical coupler of light-emitting diode and phototriode, and the input of optical coupler is connected with two resistance, as the resistance R 47 in Fig. 1 and resistance R 48, like this, the control signal of battery management system output transfers to the input of optical coupler by resistance R 47.Filter circuit in the present invention can be for comprising the filter circuit of resistance and electric capacity, as the resistance R 46 in Fig. 1, resistance R 45, resistance R 44, capacitor C 21 and capacitor C 22, and an end of resistance R 46 is connected with the emitter of optical coupler, one end of resistance R 45 is connected emitter and all is connected with optical coupler with resistance R 46, the other end of resistance R 45 is connected with capacitor C 22, one end of resistance R 44 is connected with capacitor C with resistance R 45 and all is connected, and the other end of resistance R 44 is connected with capacitor C 21.
When certain batteries needs equilibrium in battery management system monitors battery pack, battery management system sends a PWM (Pulse Width Modulation, pulse width modulation) square wave, this square wave is control signal, and the width of PWM square wave can be expressed needs balanced voltage or the size of electric current.This control signal puts on the LED side of optical coupler, namely is applied on resistance R 47.One of phototriode side output and the on all four PWM2 square wave of PWM square wave in optical coupler; The PWM2 square wave becomes a dc control signal Vref after through resistance R 45, resistance R 46, resistance R 44, capacitor C 21 and C22 filtering, this dc control signal Vref is used for controlling the equilibrium of voltage or the electric current of battery.
the above is only preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet, be not to limit the present invention, any those skilled in the art are not within breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. a balancing control circuit, is characterized in that, comprising: optical coupler and filter circuit;
The input of described optical coupler receives the control signal that battery management system sends, and the collector electrode of described optical coupler provides reference voltage, and the emitter of described optical coupler is connected with this filter circuit;
Described filter circuit receives the next control signal of emitter transmission of described optical coupler, and the control signal after output filtering.
2. balancing control circuit as claimed in claim 1, is characterized in that, described optical coupler comprises: light-emitting diode and phototriode.
3. balancing control circuit as claimed in claim 1, it is characterized in that, the input of described optical coupler and resistance (R47) are connected R48 with resistance) be connected, the control signal of described battery management system output transfers to the input of optical coupler by resistance (R47).
4. as claim 1 or 2 or 3 described balancing control circuits, it is characterized in that, described filter circuit comprises: resistance (R46), resistance (R45), resistance (R44), electric capacity (C22) and electric capacity (C21);
One end of described resistance (R46) is connected with the emitter of optical coupler, one end of described resistance (R45) and described resistance (R46) are connected emitter and all are connected with optical coupler, the other end of described resistance (R45) is connected with described electric capacity (C22), one end of described resistance (R44) and described resistance (R45) be connected electric capacity (C22) and all be connected, the other end of described resistance (R44) is connected with described electric capacity (C21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103924012A CN103138317A (en) | 2011-12-01 | 2011-12-01 | Balanced control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103924012A CN103138317A (en) | 2011-12-01 | 2011-12-01 | Balanced control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103138317A true CN103138317A (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103924012A Pending CN103138317A (en) | 2011-12-01 | 2011-12-01 | Balanced control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN103138317A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087807A (en) * | 1992-11-24 | 2000-07-11 | Seiko Instruments Inc. | Charge/discharge control circuit and chargeable electric power source apparatus |
| CN2476126Y (en) * | 2000-12-11 | 2002-02-06 | 范汉强 | Charger |
| CN101986508A (en) * | 2010-12-03 | 2011-03-16 | 安徽力高新能源技术有限公司 | Battery equalizing device |
| CN202363939U (en) * | 2011-12-01 | 2012-08-01 | 凯迈(洛阳)电子有限公司 | Balanced control circuit |
-
2011
- 2011-12-01 CN CN2011103924012A patent/CN103138317A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6087807A (en) * | 1992-11-24 | 2000-07-11 | Seiko Instruments Inc. | Charge/discharge control circuit and chargeable electric power source apparatus |
| CN2476126Y (en) * | 2000-12-11 | 2002-02-06 | 范汉强 | Charger |
| CN101986508A (en) * | 2010-12-03 | 2011-03-16 | 安徽力高新能源技术有限公司 | Battery equalizing device |
| CN202363939U (en) * | 2011-12-01 | 2012-08-01 | 凯迈(洛阳)电子有限公司 | Balanced control circuit |
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| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |