CN203205895U - Lithium battery energy balance control system - Google Patents
Lithium battery energy balance control system Download PDFInfo
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- CN203205895U CN203205895U CN 201220660657 CN201220660657U CN203205895U CN 203205895 U CN203205895 U CN 203205895U CN 201220660657 CN201220660657 CN 201220660657 CN 201220660657 U CN201220660657 U CN 201220660657U CN 203205895 U CN203205895 U CN 203205895U
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Abstract
The utility model discloses a lithium battery energy balance control system. The lithium battery energy balance control system comprises a driving circuit, a control circuit, a battery unit, a voltage acquisition circuit, a voltage amplification circuit and a microprogrammed control unit (MCU) microprocessor which are connected with one another successively. The output end of the microprogrammed control unit (MCU) microprocessor is connected with an MOS transistor on the control circuit; the output end of the microprogrammed control unit (MCU) microprocessor comprises CELL1, CELL2 and CELL3 ports which are respectively connected with the MOS transistor on the control circuit; the output end of the microprogrammed control unit (MCU) microprocessor further comprises and is connected with an MOS transistor; and the MOS transistor is connected with a system load. According to the lithium battery energy balance control system of the utility model, signal sampling, processing, amplification and comparison as well as charging control can be real time performed on each cell unit in a cell assembly through circuits that are connected with input ports of the microprogrammed control unit (MCU) microprocessor; and a BLEED_DRIVER port connected with the microprogrammed control unit (MCU) microprocessor can adjust and control current duty ratio and automatically switches the circuits according to detected electricity quantity information, and therefore, the cell assembly can be protected, and circuit complexity of the whole system can be decreased. The lithium battery energy balance control system of the utility model can assist in avoiding energy waste and shortening charging time.
Description
Technical field
The present invention relates to cell voltage balancing technique field, relate in particular to a kind of lithium battery balancing energy control system and method.
Background technology
Practice shows that the cell life-span is longer than battery pack, and there is each in the reason battery pack cell electric weight is unbalanced and causes in the process of using, and then reduces the useful life of entire cell.Though each cell model specification in the battery pack is the same, because the difference of manufacturing process and environment for use has caused the inconsistency of each cell electric weight.In the discharge process of battery pack, the minimum cell of electric weight uses electric weight at first, and the battery electric quantity deficiency is quit work; In the charging process of battery pack, the cell that electric weight is the highest charges at first and finishes, and makes battery pack show that electric weight is full of, and stops charging, causes other cell electric weight all can not charge.Can learn thus, take the necessary technology means to come the control of balancing battery balancing energy to be very important.
This type of control system or device are disclosed by following patent literature in the prior art.
Chinese invention patent ublic specification of application CN1667909A has disclosed and has adopted resistance-type to consume the equilibrium that high electric weight cell consumes power reaches each cell of battery pack, improves the charge-discharge performance of battery pack; This mode consumes the high power capacity cell with form of heat, the utilization of the energy has been caused pollution, does not meet society to the requirement of energy conservation.
Chinese invention patent ublic specification of application CN101826642A has disclosed to adopt and has made the cell that links to each other in twos carry out energy transfer equilibrium, adopts each cell electric weight of dynamic power branch mode balancing battery group to reach balanced purpose; This dynamic power branch mode is that in charging process often consuming time longer, the structure of system is also comparatively complicated, and the stability of system is also relatively poor, and production cost is higher.
Summary of the invention
Technical problem to be solved by this invention provides a kind of lithium battery balancing energy control system and method for energy savings.
For achieving the above object, the invention provides following technical scheme: a kind of lithium battery balancing energy control system, comprise and connect drive circuit successively, transformer, control circuit, the voltage collection circuit group, voltage amplifier circuit group and MCU microprocessor, described voltage amplifier circuit group connects MCU processor input, described control circuit is provided with metal-oxide-semiconductor, described MCU output end of microprocessor also comprises CELL1, CELL2 and CELL3 port are connected the metal-oxide-semiconductor on the described control circuit respectively, described MCU output end of microprocessor also comprises connection one metal-oxide-semiconductor, the load of described metal-oxide-semiconductor connected system.
Preferably, described MCU microprocessor connects the FPGA display driver by the RS232 PORT COM, and described FPGA display driver connects LCD display by the 16bit bus, is used for finishing man-machine information exchange.
Preferably, the output of described MCU microprocessor also comprises the BLEED_DRIVER port, and described BLEED_DRIVER port connects optocoupler by resistance, is used for regulating drive circuit electric current duty ratio.
Preferably, described transformer is the normal shock transformer.
Preferably, described voltage collection circuit group comprises several voltage collection circuits and battery unit, and described battery unit connects reverse proportional amplifier, gathers each battery cell voltage.
Preferably, described every group of reverse proportional amplifier connects signal amplifier, improves voltage impedance, will gather that loss limits minimum in the battery cell voltage transport process.
Preferably, described every group of signal amplifier connects MCU microprocessor input, MCU microprocessor samples comparative analysis battery cell voltage.
The present invention also provides a kind of lithium battery balancing energy control method, comprises for a plurality of battery units, according to described battery unit electric quantity acquisition, and handles and is sent to microprocessor by gathering signal and signal.
Preferably, described microprocessor internal is provided with A/D and D/A port.
Preferably, described microprocessor is judged at minimum electric weight battery unit charging according to signal analysis, is carried out charging operations.
Adopt the beneficial effect of above technical scheme to be: the present invention utilizes the circuit of MCU microprocessor input port connection to sample, handle, amplify, to compare and to control and charge each battery unit live signal in the battery pack, finishes until the whole battery group charging; The MCU output end of microprocessor also connects a LCD display and is used for man-machine exchange, and the information of charging process is provided, and can observe battery pack charging status by display; The BLEED DRIVER port that the MCU microprocessor connects can the regulate electrical current duty ratio, carry out the automatic folding of circuit according to the information that detects electric weight, and battery pack is played the effect of protection, prolongs battery pack useful life; Acquisition Circuit group in the system can improve the stability of voltage signal to the voltage signal voltage regulation filtering; Voltage amplifier circuit group in the system improves the input impedance of voltage signal, makes the MCU microprocessor collect the integrality of signal; The A/D that microprocessor internal is provided with and D/A port reduce conversion circuit, reduce whole system circuit complexity; Adopt technical scheme of the present invention to avoid energy waste, shortened the charging interval.
Description of drawings
Fig. 1 is circuit diagram of the present invention;
Fig. 2 is the flow chart of energy content of battery equalization methods of the present invention;
Wherein, 1-drive circuit, 2-control circuit, 3-voltage collection circuit group, 4-voltage amplifier circuit group, the 5-MCU microprocessor, 6-FPGA display driver, 7-LCD display, 8-system load, 9-transformer, the 10-battery unit, 11-gathers signal, and the 12-signal is handled, the 13-microprocessor.
Embodiment
In order to deepen the understanding of the present invention, the invention will be further described below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the present invention, does not constitute the restriction to protection range of the present invention.
Describe preferred implementation of the present invention in detail below in conjunction with accompanying drawing 1: a kind of lithium battery balancing energy control system, comprise and connect drive circuit 1 successively, control circuit 2, transformer, voltage collection circuit group 3, voltage amplifier circuit group 4 and MCU microprocessor 5, voltage amplifier circuit group 4 connects MCU processor 5 inputs, be provided with metal-oxide-semiconductor at control circuit 2, MCU microprocessor 5 outputs also comprise CELL1, CELL2 and CELL3 port are connected the metal-oxide-semiconductor on the control circuit respectively, MCU microprocessor 5 outputs also comprise connection one metal-oxide-semiconductor, this metal-oxide-semiconductor connected system load, MCU microprocessor 5 connects FPGA display driver 6 by the RS232 PORT COM, FPGA display driver 6 connects LCD display 7 by the 16bit bus, is used for finishing man-machine information exchange; The output of MCU microprocessor 5 also comprises the BLEED_DRIVER port, and this BLEED_DRIVER port connects optocoupler by resistance, is used for regulating drive circuit electric current duty ratio; Voltage collection circuit group 3 comprises several voltage collection circuits and battery unit, battery unit connects reverse proportional amplifier, every group of reverse proportional amplifier connects signal amplifier, improves voltage impedance, will gather that loss limits minimum in the battery cell voltage transport process; Every group of signal amplifier connects MCU microprocessor 5 inputs, MCU microprocessor 5 sampling comparative analysis battery cell voltages.
A kind of lithium battery balancing energy control method, comprise for a plurality of battery units 10, according to described battery unit 10 electric quantity acquisitions, and handle 12 and be sent to microprocessor 13 by gathering signal 11 and signal, be provided with A/D and D/A port in microprocessor 13 inside, microprocessor 13 can be judged at minimum electric weight battery unit 10 chargings according to signal analysis, carry out charging operations.
Adopt the beneficial effect of above technical scheme to be: the present invention utilizes the circuit of MCU microprocessor input port connection to sample, handle, amplify, to compare and to control and charge each battery unit live signal in the battery pack, finishes until the whole battery group charging; The MCU output end of microprocessor also connects a LCD display and is used for man-machine exchange, and the information of charging process is provided, and can observe battery pack charging status by display; The BLEED_DRIVER port that the MCU microprocessor connects can the regulate electrical current duty ratio, carry out the automatic folding of circuit according to the information that detects electric weight, and battery pack is played the effect of protection, prolongs battery pack useful life; Acquisition Circuit group in the system can improve the stability of voltage signal to the voltage signal voltage regulation filtering; Voltage amplifier circuit group in the system improves the input impedance of voltage signal, makes the MCU microprocessor collect the integrality of signal; The A/D that microprocessor internal is provided with and D/A port reduce conversion circuit, reduce whole system circuit complexity; Adopt technical scheme of the present invention to avoid energy waste, shortened the charging interval.
Above-described only is preferred implementation of the present invention, should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (7)
1. lithium battery balancing energy control system, comprise and connect drive circuit, transformer, control circuit, voltage collection circuit group, voltage amplifier circuit group and MCU microprocessor successively, it is characterized in that: described voltage amplifier circuit group connects MCU processor input, described control circuit is provided with metal-oxide-semiconductor, described MCU output end of microprocessor comprises that also CELL1, CELL2 and CELL3 port are connected the metal-oxide-semiconductor on the described control circuit respectively, described MCU output end of microprocessor also comprises connection one metal-oxide-semiconductor, the load of described metal-oxide-semiconductor connected system.
2. lithium battery balancing energy control system according to claim 1 is characterized in that: described MCU microprocessor connects the FPGA display driver by the RS232 PORT COM, and described FPGA display driver connects LCD display by the 16bit bus.
3. lithium battery balancing energy control system according to claim 1, it is characterized in that: the output of described MCU microprocessor also comprises the BLEED_DRIVER port, described BLEED_DRIVER port connects optocoupler by resistance.
4. lithium battery balancing energy control system according to claim 1, it is characterized in that: described transformer is the normal shock transformer.
5. lithium battery balancing energy control system according to claim 1, it is characterized in that: described voltage collection circuit group comprises several voltage collection circuits and battery unit, and described battery unit connects reverse proportional amplifier.
6. lithium battery balancing energy control system according to claim 5 is characterized in that: described every group of reverse proportional amplifier connection signal amplifier.
7. according to claim 1 or 6 described lithium battery balancing energy control system, it is characterized in that: described every group of signal amplifier connects MCU microprocessor input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660657 CN203205895U (en) | 2012-12-04 | 2012-12-04 | Lithium battery energy balance control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220660657 CN203205895U (en) | 2012-12-04 | 2012-12-04 | Lithium battery energy balance control system |
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| CN203205895U true CN203205895U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220660657 Expired - Fee Related CN203205895U (en) | 2012-12-04 | 2012-12-04 | Lithium battery energy balance control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051017A (en) * | 2012-12-04 | 2013-04-17 | 芜湖天元汽车电子有限公司 | Lithium cell energy balance control system and method |
| CN103730936A (en) * | 2014-01-03 | 2014-04-16 | 桂林电子科技大学 | Electric automobile power battery equalization management system and method |
| CN103762626A (en) * | 2013-12-31 | 2014-04-30 | 江苏嘉钰新能源技术有限公司 | Equalizing charge control circuit |
| CN103972946A (en) * | 2013-12-18 | 2014-08-06 | 芜湖天元汽车电子有限公司 | Battery energy balance circuit and method for applying same |
-
2012
- 2012-12-04 CN CN 201220660657 patent/CN203205895U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051017A (en) * | 2012-12-04 | 2013-04-17 | 芜湖天元汽车电子有限公司 | Lithium cell energy balance control system and method |
| CN103972946A (en) * | 2013-12-18 | 2014-08-06 | 芜湖天元汽车电子有限公司 | Battery energy balance circuit and method for applying same |
| CN103762626A (en) * | 2013-12-31 | 2014-04-30 | 江苏嘉钰新能源技术有限公司 | Equalizing charge control circuit |
| CN103730936A (en) * | 2014-01-03 | 2014-04-16 | 桂林电子科技大学 | Electric automobile power battery equalization management system and method |
| CN103730936B (en) * | 2014-01-03 | 2015-09-30 | 桂林电子科技大学 | The balanced management method of electric automobile power battery balanced management system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20151204 |
|
| EXPY | Termination of patent right or utility model |