CN103795123B - A kind of Intelligent battery management system based on ultracapacitor active equalization - Google Patents
A kind of Intelligent battery management system based on ultracapacitor active equalization Download PDFInfo
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- CN103795123B CN103795123B CN201410056730.3A CN201410056730A CN103795123B CN 103795123 B CN103795123 B CN 103795123B CN 201410056730 A CN201410056730 A CN 201410056730A CN 103795123 B CN103795123 B CN 103795123B
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Abstract
The invention discloses a kind of Intelligent battery management system based on ultracapacitor active equalization; including set of cells, detection/protection system, active equalization system, main controller system and display system; described main controller system respectively with display system, the signal end diconnected of detection/protection system; the control signal outfan of described main controller system is connected with the signal input part of set of cells by described active equalization system, described detection/protection system and described set of cells diconnected.Compared with existing intelligent management system, switching speed can be brought up to tens kHz by the present invention, can be effectively improved energy transfer efficiency and have reliable switch logic, it is ensured that security of system, enables the system to the in hgher efficiency of conversion, and power consumption is less；Multiple set of cells can be monitored, it is achieved the cascade of set of cells simultaneously, meet the requirement of complication system；The visual design of man machine interface, it is simple to initialization system parameter and be apparent from battery state.
Description
Technical field
The present invention relates to a kind of intelligent battery managing device, particularly relate to a kind of the most equal based on ultracapacitor
The Intelligent battery management system of weighing apparatus.
Background technology
Monomer battery voltage platform only has 3.2 3.7V, it usually needs is composed in series set of cells use and can be only achieved
Voltage request.In discharge process, if the voltage of some cell is low, lose again discharge capability,
At this moment it just becomes an electrical appliance, and other still have the cell of capacity to be just together in series to its charging,
The reverse electrode phenomena of cell occurs so that whole set of cells can not normally work, simultaneously the list to antipole
Body battery life causes strong influence.In charging process, the cell being first discharged, again can be first
First it is filled, thus there will be overcharge phenomenon so that whole set of cells can not normally be fully charged.If
Battery system is allowed to run in this case and not managed, the service life of battery and the reliability of system
All can be affected.
For guaranteeing that battery performance is good, extend battery, it is necessary to battery is managed rationally and effectively
Reason and control.The use process of set of cells is managed by battery management system, to each monomer electricity in set of cells
The monitoring state in pond, can maintain the state consistency of cell in set of cells, it is to avoid each monomer electricity
The unbalanced decay causing battery performance in pond and safety issue.
Although the function of traditional capacitance balanced way can meet requirement, but the service life being because relay is short
And switching speed is too slow, the problems such as electrochemical capacitor internal resistance is big in addition, may because of switch logic with switch speed not
Synchronize and burn out circuit and even cause battery short circuit to explode.Therefore the program is constantly in the experimental stage,
Can not be to product step transition, just because of this, on market, the product almost without plenary capacitance equilibrium occurs.
Summary of the invention
The purpose of the present invention is that offer is a kind of based on ultracapacitor active equalization, in order to solve battery
The Intelligent battery management system that reasonable set effectively manages and controls.
To achieve these goals, the technical solution used in the present invention is: a kind of based on ultracapacitor active
The Intelligent battery management system of equilibrium, including set of cells, detection/protection system, active equalization system, master control
Device system processed and display system, described main controller system respectively with display system, detection/protection system
Signal end diconnected, the control signal outfan of described main controller system passes through described active equalization system
Connect with the signal input part of set of cells, described detection/protection system and described set of cells diconnected；
As preferably, described main controller system includes data handling system, control module and communication system,
Described data handling system includes voltage monitoring systems, current monitoring system, temperature monitoring system and residue electricity
Amount monitoring system；Described control module connects with active equalization system；Described communication system includes downgoing communication
System and uplink communication system；
As preferably, described detection/protection system include processor of single chip computer, battery voltage detecting system,
Battery pack current detecting system, battery pack temperature detecting system, set of cells overvoltage/Over Current Protection System, battery
Group residual capacity measurement system and CAN communication system；
As preferably, described downgoing communication system uses CAN communication mode, and with the CAN of detection/protection system
Communication system connects, and described uplink communication system uses USB or ethernet communication mode, and and display system
Connection；
As preferably, described processor of single chip computer uses 16 double-core single-chip microcomputers；
As preferably, described set of cells is made up of the battery subsystem of several parallel connections, each battery subsystem
Battery cell is propped up in series by n；
As preferably, described active equalization system is made up of n-1 group ultracapacitor and multi-channel switch；
As preferably, described ultracapacitor is double layer capacitor；
As preferably, described multi-channel switch is made up of metal-oxide-semiconductor and photoelectrical coupler；
As preferably, described display system uses PC or TFT.
Compared with prior art, it is an advantage of the current invention that:
On the one hand 1, use and replaced traditional relay by metal-oxide-semiconductor and photoelectrical coupler and FPGA algorithm, can be by
Switching speed brings up to tens kHz, can be effectively improved energy transfer efficiency, and have reliable switch logic,
Ensure security of system；On the other hand, ultracapacitor is used to replace electrochemical capacitor.Because ultracapacitor is more electric
Solve electric capacity and have that capacity is big, internal resistance is little, be provided that the advantages such as instantaneous large-current, enable the system to the effect of conversion
Rate is higher, and power consumption is less.
2, the present invention uses transmission monitor to be managed set of cells by CAN, can monitor multiple simultaneously
Set of cells, it is achieved the cascade of set of cells, meets the requirement of complication system；
3 it addition, the visual design of man machine interface, it is simple to initialization system parameter and be apparent from set of cells
State.
Accompanying drawing explanation
Fig. 1 is that the present invention manages system structure theory diagram；
Fig. 2 is detection/protection system structure theory diagram；
Fig. 3 is active equalization system structural principle block diagram；
Fig. 4 is main controller system structural principle block diagram；
Fig. 5 is that capacitive energy moves principle schematic.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.As it is shown in figure 1, one is based on super capacitor
The Intelligent battery management system of device active equalization, including set of cells, detection/protection system, active equalization system,
Main controller system and display system.Described main controller system with display system, detection/protection is respectively
The signal end diconnected of system；The control signal outfan of described main controller system passes through described active equalization
System connects with the signal input part of set of cells；Described detection/protection system and described set of cells diconnected.
Described detection/protection system is used for gathering battery pack information, protection battery cell；Described active equalization system is used
In described set of cells is carried out equalization operation；Described main controller system for data analysis, system control and
Data message is received and dispatched；Described display system shows for system parameter setting and information；If described set of cells by
Dry battery subsystem in parallel is constituted, and it is in series that each battery subsystem is propped up battery cell by n.
Described detection/protection system, as in figure 2 it is shown, include that the detection of processor of single chip computer, battery voltage is
System, battery pack current detecting system, battery pack temperature detecting system, set of cells overvoltage/Over Current Protection System,
Set of cells residual capacity measurement system and CAN communication system.Detect battery pack current, voltage, temperature in real time
And the parameter such as capacity, by described CAN communication system, parameter information is uploaded to described main controller system,
It is analyzed processing by described main controller system, and accepts described master controller by described downgoing communication system
The guarded command that system issues, guarded command includes overcurrent protection, overvoltage protection.
Described active equalization system, as it is shown on figure 3, be made up of n-1 group ultracapacitor and multi-channel switch,
Described ultracapacitor is double layer capacitor, for set of cells active equalization, has efficiency height, structure letter
The feature such as single, low in energy consumption；Described multi-channel switch is made up of metal-oxide-semiconductor and photoelectrical coupler.As described master
Control system detects when described set of cells is not at described equilibrium state, and described main controller system switches institute
State by-pass switch and described set of cells is carried out equalization operation.
Described main controller system, as shown in Figure 4, including data handling system, control module and communication system
System.Described data handling system includes voltage monitoring systems, current monitoring system, temperature monitoring system and remains
Remaining electricity monitoring system；Described control module connects with active equalization system.Described data handling system and institute
State control module to be made up of FPGA and peripheral circuit.Described data handling system realize described set of cells voltage,
The calculating of electric current, temperature and electricity and breakdown judge；Described control module is used for controlling active equalization system and enters
Row equalization operation；Described communication system includes downgoing communication system and uplink communication system.By described display
System, can any initialization system parameter, described equalizing voltage limit value, as described in equalizing voltage precision etc.,
It is sent to described master controller by described display system by described uplink communication system preserve, simultaneously can
Real-time update is carried out with the battery state information that described master controller is sent by described uplink communication system
Display.
Described downgoing communication system use CAN communication mode, and with detection/protection system CAN communication system
Connection, described uplink communication system uses USB or ethernet communication mode, and connects with display system.
Described display system uses PC or TFT, in order to arrange systematic parameter, such as equalizing voltage limit value, all
Weighing apparatus voltage accuracy etc., and show described main controller system by described uplink communication system send described
Battery voltage, battery pack current, battery pack temperature, set of cells dump energy and battery pack balancing state
Etc. information.Described equalizing voltage limit value refers to the maximum voltage value allowing battery to reach, i.e. battery exceedes this electricity
Pressure value is accomplished by starting described active equalization system and equalizes this battery；Described equalizing voltage precision refers to
Maximum allowable pressure reduction between described set of cells after equilibrium；Described battery pack balancing state refers to described set of cells
Each monomer voltage is all within described equalizing voltage limit value, and between each monomer, pressure reduction is electric no more than described equilibrium
Pressure precision.
Be illustrated in figure 5 capacitive energy and move principle schematic, the balancing principle of the present invention as traditional scheme,
Energy is all used to move mode, except that traditional scheme is respectively adopted mechanical relay and electrochemical capacitor is real
Existing variable connector and energy move intermediary, and the present invention uses metal-oxide-semiconductor and photoelectrical coupler to realize variable connector,
Use ultracapacitor to realize energy and move intermediary, and equalization operation is controlled by the master with FPGA as main control chip
Controller.No matter set of cells is in charging, electric discharge or static any state, and main controller system is the most real
Time monitor described battery pack balancing state, as long as detecting that battery is not at equilibrium state, then control start institute
State active equalization system, the energy content of battery high for voltage is moved on the battery that voltage is low.
Described energy is moved specific implementation process and is divided into following three steps:
Assuming that a certain moment battery B1 voltage exceedes described equalizing voltage limit value.
The first step: switch K1 closes with contact 1, switch K2 closes with contact 3, makes battery B1 to electric capacity
C1 discharges；
Second step: when electric capacity C1 voltage is increased to equal with battery B1 voltage, will switch K1 and contact 2
Guan Bi, switch K2 closes with contact 4, utilizes electric capacity C1 to charge battery B2；
3rd step: charge to battery B2 voltage equal with electric capacity C1 voltage time, disconnect switch K1 and K2, this
Time battery B1 portion of energy have been transferred on battery B2.
Above three steps are that primary energy moves process, if now battery is still not up to described battery pack balancing shape
State, then must repeat the above steps, until set of cells reaches equilibrium state and then stops energy and move operation.
The present invention, with 16 double-core chip microcontroller detecting system basic functions, uses ultracapacitor to realize main
Dynamic equalization function, uses FPGA to realize data and processes and system control.Active equalization ratio is used passively to equalize merit
Consuming low, and use ultracapacitor to realize active equalization, ratio is by the tradition such as transformator, electrochemical capacitor actively again
Balanced way power consumption is lower.
Above to a kind of Intelligent battery management system based on ultracapacitor active equalization provided by the present invention
Having carried out exhaustive presentation, principle and the embodiment of the present invention are explained by specific case used herein
Stating, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Meanwhile,
For one of ordinary skill in the art, according to the thought of the present invention, in detailed description of the invention and range of application
On all will change, to the change of the present invention with to improve to be possible, without beyond appended claims
Requiring the spirit and scope of defined, in sum, this specification content should not be construed as the limit to the present invention
System.
Claims (8)
1. an Intelligent battery management system based on ultracapacitor active equalization, it is characterised in that: include
Set of cells, detection/protection system, active equalization system, main controller system and display system, described
Main controller system respectively with display system, the signal end diconnected of detection/protection system, described master control
The control signal outfan of device system processed is connected by the signal input part of described active equalization system with set of cells
Logical, described detection/protection system and described set of cells diconnected, described active equalization system is by n-1 group
Ultracapacitor and multi-channel switch are constituted, and described multi-channel switch is by metal-oxide-semiconductor and photoelectrical coupler structure
Becoming, described main controller system includes data handling system, control module and communication system, at described data
Reason system and described control module are made up of FPGA and peripheral circuit.
The management of a kind of intelligent battery based on ultracapacitor active equalization is
System, it is characterised in that: described data handling system includes voltage monitoring systems, current monitoring system, temperature
Monitoring system and dump energy monitoring system；Described control module connects with active equalization system；Described communication
System includes downgoing communication system and uplink communication system.
The management of a kind of intelligent battery based on ultracapacitor active equalization is
System, it is characterised in that: described detection/protection system includes that the detection of processor of single chip computer, battery voltage is
System, battery pack current detecting system, battery pack temperature detecting system, set of cells overvoltage/Over Current Protection System,
Set of cells residual capacity measurement system and CAN communication system.
The management of a kind of intelligent battery based on ultracapacitor active equalization is
System, it is characterised in that: described downgoing communication system use CAN communication mode, and with detection/protection system
CAN communication system connectivity, described uplink communication system uses USB or ethernet communication mode, and with aobvious
Show system connectivity.
The management of a kind of intelligent battery based on ultracapacitor active equalization is
System, it is characterised in that: described set of cells is made up of the battery subsystem of several parallel connections, each battery subsystem
It is in series that system is propped up battery cell by n.
A kind of intelligent battery based on ultracapacitor active equalization the most according to claim 1 management is
System, it is characterised in that: described ultracapacitor is double layer capacitor.
A kind of intelligent battery based on ultracapacitor active equalization the most according to claim 1 management is
System, it is characterised in that: described display system uses PC.
A kind of intelligent battery based on ultracapacitor active equalization the most according to claim 3 management is
System, it is characterised in that: described processor of single chip computer uses 16 double-core single-chip microcomputers.
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| CN104052124B (en) * | 2014-06-25 | 2016-08-03 | 浙江华晨铝业有限公司 | Metal battery managing device |
| CN104348234B (en) * | 2014-11-21 | 2018-02-27 | 南京国臣直流配电科技有限公司 | A kind of battery management system with active equalization system |
| CN108128173A (en) * | 2017-12-27 | 2018-06-08 | 深圳市金能弘盛能源科技有限公司 | For the protection circuit of super capacitor module |
| CN109638925A (en) * | 2019-01-21 | 2019-04-16 | 中科院合肥技术创新工程院 | A kind of battery management system based on active equalization |
| CN110208676A (en) * | 2019-05-20 | 2019-09-06 | 西北工业大学 | Front end reads the equivalent noise charge test circuit and test method of integrated circuit |
| CN112688374B (en) * | 2020-12-03 | 2022-09-20 | 华南理工大学 | Lithium battery pack active equalization system based on super-capacitor energy storage transfer |
| CN115378456B (en) * | 2022-10-25 | 2023-04-07 | 成都嘉纳海威科技有限责任公司 | Transmitting-receiving amplifying attenuation multifunctional chip |
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Effective date of registration: 20161123 Address after: High tech Zone Chengdu city Sichuan Province Jincheng Road 610000 No. 666 3 12 storey building No. 8 Patentee after: Chengdu concave Amperex Technology Limited Address before: 610000 Sichuan Province, Chengdu District of Qingbaijiang City Industrial Development Zone with Road No. 866 Patentee before: Chengdu Zhitian Polymer Material Co.,Ltd. |
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Address after: High tech Zone Chengdu city Sichuan Province Jincheng Road 610000 No. 666 3 12 storey building No. 8 Patentee after: Anshi new energy (Chengdu) Co., Ltd Address before: High tech Zone Chengdu city Sichuan Province Jincheng Road 610000 No. 666 3 12 storey building No. 8 Patentee before: CHENGDU OK NEW ENERGY TECHNOLOGY Co.,Ltd. |