CN207664645U - Based on embedded intelligence cell managing device - Google Patents
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- CN207664645U CN207664645U CN201721550521.XU CN201721550521U CN207664645U CN 207664645 U CN207664645 U CN 207664645U CN 201721550521 U CN201721550521 U CN 201721550521U CN 207664645 U CN207664645 U CN 207664645U
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Abstract
The utility model is related to one kind being based on embedded intelligence cell managing device, including：One outer housing and the main control module being set in the outer housing and a plurality of equalization control modules being connected respectively with the main control module and be used to carry out battery in battery modules charge and discharge control；Further include a plurality of being connected respectively with the main control module and being correspondingly arranged in battery modules the data acquisition module at battery for data acquisition；The data acquisition module includes battery voltage acquisition unit, battery current detection unit, battery temperature collecting unit and temperature collection unit.The utility model proposes one kind be based on embedded intelligence cell managing device, have the advantages of simple structure and easy realization.
Description
Technical field
The utility model is related to one kind being based on embedded intelligence cell managing device.
Background technology
Secondary cell there are some following disadvantages, as storage energy is few, short life, connection in series-parallel using problem, use peace
Quan Xing, battery capacity estimation difficulty etc..The performance of battery is very complicated, and different types of battery behavior also differs greatly.Electricity
Pond manages system（BMS）The utilization rate of battery can be improved by mainly aiming at, and prevent battery from overcharge and overdischarge occur, be prolonged
The service life of long battery monitors the state of battery.Accurate estimation power battery pack state-of-charge (State of Charge,
That is SOC), i.e. battery dump energy ensures that SOC is maintained in reasonable range, prevents since overcharging or overdischarging is to battery
Damage, to which forecast hybrid vehicle energy-storage battery there remains the state-of-charge of how many energy or energy-storage battery at any time.
In battery charge and discharge process, the end for every piece of battery that electric vehicle stores in (should be power battery pack) battery pack is acquired in real time
Voltage and temperature, charging and discharging currents and battery pack total voltage prevent battery from overcharging or overdischarging phenomenon occurs.Simultaneously can and
When provide battery condition, pick out problematic battery, keep the reliability and high efficiency of whole group battery operation, make remaining capacity
Estimation model is implemented as possibility.In addition to this, the usage history archives that also establish every piece of battery, to advanced optimize and
It develops Novel electric, charger, motor etc. and data is provided, foundation is provided for the off-line analysis system failure.I.e. in single battery, electricity
Equilibrium is carried out between the group of pond, and each battery in battery pack is made all to reach balanced consistent state.It is battery balanced to be generally divided into actively
Weighing apparatus, passive equilibrium.The BMS to have put goods on the market at present, mostly using passive equilibrium.Balancing technique is that the current world is causing
The key technology of one battery management system (bms) of power research and development.With the development of battery management system, can also increase
Other functions.Has plurality of advantages：Energy utilization rate is improved, to substantially increase economic benefit.But current product
In, used circuit is complex, and cost is higher, can not realize and effectively be monitored to battery.
Invention content
The purpose of this utility model is to provide one kind being based on embedded intelligence cell managing device, to overcome the prior art
Present in defect.
To achieve the above object, the technical solution of the utility model is：One kind being based on embedded intelligence cell managing device,
Including：One outer housing and the main control module being set in the outer housing and a plurality of it are connected and use with the main control module respectively
Battery carries out the equalization control module of charge and discharge control in battery modules；Further include it is a plurality of respectively with the main control module phase
Even and the data acquisition module at battery for data acquisition is correspondingly arranged in battery modules；The data acquisition module includes
Battery voltage acquisition unit, battery current detection unit, battery temperature collecting unit and temperature collection unit.
In one embodiment of the utility model, the equalization control module correspondence is connected to described through terminals and cable
Battery in battery modules；The main control module is through corresponding terminals and cable connection and the data acquisition module phase
Even；The one side of the outer housing offers first through hole for the equalization control module terminals to be arranged and for setting
Set the second through-hole with the matched terminals of the data acquisition module.
In one embodiment of the utility model, the main control module includes：STM32F103ZET6；The battery temperature is adopted
It includes paster thermistor PT100 to collect unit and the temperature collection unit；The battery voltage acquisition unit includes
One CS5463；The battery current detection unit includes Hall open-loop current sensor.
In one embodiment of the utility model, the equalization control module includes first resistor, second resistance, third electricity
Resistance, the 4th resistance, field-effect tube, the first triode, the second triode, optocoupler and phase inverter；The input terminal of the phase inverter
It is connected with the main control module, output end is connected to the anode of the light emitting diode in the optocoupler through the 4th resistance；Institute
State the minus earth of light emitting diode in optocoupler；One end of light-sensitive device collection with second triode respectively in the optocoupler
The cathode of battery is connected in electrode, the drain electrode of the field-effect tube and the battery modules；Light-sensitive device in the optocoupler
The other end is connected with one end of one end of the first resistor, the second resistance respectively；The other end of the second resistance point
It is not connected with the base stage of first triode and second triode；The other end of the first resistor respectively with it is described
The anode of battery is connected in the collector of first triode, one end of the 3rd resistor and the battery modules；Described
The emitter of one triode is connected with the emitter of second triode, and is connected with the grid of the field-effect tube；It is described
The source electrode of field-effect tube is connected with the other end of the 3rd resistor.
In one embodiment of the utility model, first triode is PNP pipe, and second triode is managed for NPN；Institute
It is metal-oxide-semiconductor to state field-effect tube.
In one embodiment of the utility model, further include one be connected with the main control module and be set to be opened in it is described outer
Display screen in case top groove, the display screen use a LCD12864.
In one embodiment of the utility model, the main control module further includes being received and dispatched with external control system or CAN bus
The CAN bus communication interface of unit communication and the USB interface communicated with host computer；The CAN bus communication interface is set to
It is opened in the third through-hole of the outer housing another side；The USB interface, which is set to, is opened in the outer housing other side
In the fourth hole in face.
Further include the bee for being connected and being set to the outer housing with the main control module in one embodiment of the utility model
Ring device and the main control module are connected and are set to the light emitting diode at the top of the outer housing in fifth hole.
Further include being set at the battery modules and being connected with the main control module in one embodiment of the utility model
Fan.
Compared to the prior art, the utility model has the advantages that：The utility model proposes one kind be based on it is embedding
Enter formula intelligent battery managing device, have the advantages of simple structure and easy realization, cost is relatively low, can realize and effectively be monitored to battery.
Description of the drawings
Fig. 1 is outer housing side view diagram in the utility model.
Fig. 2 is shell other side view in the utility model.
Fig. 3 is the circuit diagram in the utility model.
Fig. 4 is the functional diagram of main control module in the utility model.
Fig. 5 is voltage conversion circuit circuit diagram in one embodiment of the utility model.
Fig. 6 is balancing control circuit circuit diagram in one embodiment of the utility model.
Fig. 7 is main control module circuit diagram in one embodiment of the utility model.
Specific implementation mode
Below in conjunction with the accompanying drawings and existing software, the technical solution of the utility model is specifically described.In the explanation
Involved existing software is not the object that the utility model is protected in the process, and the utility model only protects the knot of the device
Structure and connection relation.
The utility model provides one kind and being based on embedded intelligence cell managing device, as shown in Fig. 1 ~ 3, including：One shell
Body 1 and the main control module being set in the outer housing and a plurality of it is connected respectively with the main control module and for battery mould
Battery carries out the equalization control module of charge and discharge control in group；Further include a plurality of being connected and corresponding setting with the main control module respectively
Data acquisition module for data acquisition at battery is placed in battery modules；Data acquisition module includes battery voltage acquisition list
Member, battery current detection unit, battery temperature collecting unit and temperature collection unit.
Further, in the present embodiment, equalization control module is corresponded to is connected to battery modules through terminals and cable
In battery；Main control module is connected through corresponding terminals and cable connection with data acquisition module；The one side of outer housing
Offer the first through hole 2 for equalization control module terminals to be arranged and for being arranged and data acquisition module is matched connects
Second through-hole 3 of line end.
Further, in the present embodiment, main control module includes：STM32F103ZET6；Battery temperature collecting unit and
Temperature collection unit includes paster thermistor PT100；Battery voltage acquisition unit includes a CS5463；Battery current is examined
It includes Hall open-loop current sensor to survey unit.
Further, in the present embodiment, as shown in fig. 6, equalization control module includes first resistor, second resistance,
Three resistance, the 4th resistance, field-effect tube, the first triode, the second triode, optocoupler and phase inverter；The input terminal of phase inverter
It is connected with main control module, output end is connected to the anode of the light emitting diode in optocoupler through the 4th resistance；Light-emitting diodes in optocoupler
The minus earth of pipe；In optocoupler one end of light-sensitive device respectively with the collector of the second triode, field-effect tube drain electrode and
The cathode of battery is connected in battery modules；In optocoupler the other end of light-sensitive device respectively with one end of first resistor, second resistance
One end be connected；The other end of second resistance is connected with the base stage of the first triode and the second triode respectively；First resistor
The other end be connected respectively with the anode of battery in the collector of the first triode, one end of 3rd resistor and battery modules；
The emitter of first triode is connected with the emitter of the second triode, and is connected with the grid of field-effect tube；Field-effect tube
Source electrode is connected with the other end of 3rd resistor.
Further, in the present embodiment, the first triode is PNP pipe, and the second triode is managed for NPN；Field-effect tube is
Metal-oxide-semiconductor.
Further, in the present embodiment, further include one being connected with main control module and being set to and be opened at the top of outer housing
Display screen 4 in groove, the display screen use a LCD12864.
Further, in the present embodiment, main control module further includes logical with external control system or CAN bus Transmit-Receive Unit
The CAN bus communication interface of letter and the USB interface communicated with host computer；CAN bus communication interface, which is set to, is opened in shell
5 in the third through-hole of body another side；USB interface is set to 6 in the fourth hole for being opened in outer housing another side.
In one embodiment of the utility model, further include be connected with main control module and be set to outer housing buzzer and
Main control module is connected and is set to the light emitting diode at the top of outer housing in fifth hole 7.
In the present embodiment, distributed bus structure is used based on BMS intelligent battery pipes management system, such as the institutes of Fig. 4 to 7
Show, including：One main control module（CCM）, multiple data acquisition modules（DCM）, multiple equalization control modules, display screen, data
Memory module, current sensor etc..
Further, data acquisition module includes that battery voltage acquisition unit, battery current detection unit, battery temperature are adopted
Collect unit, temperature collection unit.Multiple temp probes are placed in battery modules babinet（2-8 temperature sensor）, real
Now to the real-time detection of battery modules case vivo environment temperature.Data acquisition module is connect with battery modules, is acquired in this babinet
The data such as voltage, the battery case body temperature of battery battery core pass through the information such as collected cell voltage, spin manifold temperature serial
Transmission is to main control module.Equalization control module is used to carry out Balance route to battery battery core.In the present embodiment, one
A data acquisition module can acquire the battery core of 1 to 24 section.Two or more temperature are carried on each data acquisition module to pass
Sensor.
Further, main control module is realized by equalization control module to battery according to the balanced management control strategy of agreement
Balance route.Since every road battery is controlled by respective field-effect tube.In battery pack cascade process, when arbitrary in circuit
The voltage of one piece of single battery is more than balancing control circuit cut-in voltage and is less than over-charging of battery electric protection voltage, will start
The circuit module that weighs works.Balanced management function is carried out to battery core, improves the consistency of single-unit battery core, improves the use of whole group battery
Performance.
Further, equalization control module is made of optocoupler, triode, field-effect tube, phase inverter and equalizing resistance.Such as figure
Shown in 4, including first resistor, second resistance, 3rd resistor, the 4th resistance, field-effect tube, the first triode, the second triode,
Optocoupler and phase inverter.First triode uses PNP pipe, the second triode to be managed using NPN.The input terminal of phase inverter and master control mould
Block is connected, and output end is connected to the anode of the light emitting diode in optocoupler through the 4th resistance.The cathode of light emitting diode in optocoupler
Ground connection.In optocoupler one end of light-sensitive device respectively with the collector of the second triode, the drain electrode of field-effect tube and battery modules
The cathode of middle battery is connected.In optocoupler the other end of light-sensitive device respectively with one end of first resistor, one end phase of second resistance
Even.The other end of second resistance is connected with the base stage of the first triode and the second triode respectively.The other end of first resistor
It is connected respectively with the anode of battery in the collector of the first triode, one end of 3rd resistor and battery modules.One or three pole
The emitter of pipe is connected with the emitter of the second triode, and is connected with the grid of field-effect tube.The source electrode of field-effect tube and
The other end of three resistance is connected.The on off state sequential of main control module duty control optocoupler, optocoupler control list by field-effect tube
Road battery circuit.Each battery connection resistance and metal-oxide-semiconductor.When the voltage of single battery in Battery case reaches 3.55V, and electricity
When pond pressure difference is between 20mv to 80mv, Balance route would automatically turn on, by the switch shape for controlling corresponding metal-oxide-semiconductor
State carries out management of charging and discharging to battery.When charging, when underfill electricity and cell voltage is more than other cell voltages or battery electricity
When pressure reaches full electricity, main control module sends out low level and instructs to optocoupler, and optocoupler is made to be connected.Then by by the three of a pair of of complementary type
Pole pipe conducting driving metal-oxide-semiconductor, so that the source electrode and drain electrode access of field-effect tube, shunting function is realized to the battery.Work as electricity
After cell voltage equilibrium, main control module sends high level and instructs to optocoupler, optocoupler open circuit, complementary type triode ON, by grid
Voltage difference between source electrode consumes.Each equalization control module can open the balanced of multichannel simultaneously according to actual conditions and control
System.In addition, the balanced control module can pass through external 12V (9V ~ 18V is adaptive) or 24V (18V ~ 30V is adaptive)
Working power is provided for it.
Further, single battery battery core voltage detecting is realized by carrying out isolation amplification to series connection monomer voltage to each
The real-time detection of a monomer voltage.Further, by the RS485 buses of data acquisition module or CAN communication by battery pack
Voltage, Battery case temperature and the other information of interior each monomer are transmitted to main control module.Further, main control module collects number
According to the data of acquisition module, battery pack data are carried out analysis and processing is concentrated to be alarmed according to the operation conditions of battery pack
And control.Main control chip uses STM32F103ZET6.Meanwhile main control module also completes measurement, the equilibrium of battery pack operating current
Control and heat management control, utilize Kalman filtering recursive calculation, it is possible to be applied to steady and non-stationary ring with adding modification
Border.Kalman filters algorithm and estimates measured value and its relevant calculated value by predicted value, estimates probabilistic predicted value and counts
Calculate the weighted average between predicted value and measured value.Algorithm carries out state recursion according to input quantity electric current, voltage, temperature etc.,
It obtains the value of estimation, and provides evaluated error, result is constantly corrected further according to evaluated error, thus by evaluated error
It minimizes.Kalman filtering method can keep very high precision in estimation process, and have good correcting action to error.
Dynamic estimation carried out to SOC using load voltage and current integration values, electric current of the electric current in charge or discharge when
Between on integrated to calculate the variation of battery capacity to estimate.In this way using battery as a closed system, in voltameter
When calculation, it is only necessary to measure the battery power of disengaging and add up to it, by the charge/discharge electricity amount of accumulation with state-of-charge
Electricity is compared to estimate the current electricity of battery, carries out SOC estimations.On the other hand, BMS systems not only have powerful
Data communication facility, realization and the CAN bus communications between entire car controller and electric machine controller, can also provide electricity in real time
The SOC in pond, the maximum allowable discharge current value of battery, optimization use the energy content of battery, realize logical between system and onboard instruments
News show battery detailed data.
Further, common Kalman filtering method Joint EKF algorithms are used for main control module SOC estimations, utilized
Kalman filtering recursive calculation, it is possible to be applied to steady and non-stationary environment with adding modification.Kalman's filter algorithm passes through pre-
Measured value estimates measured value and its relevant calculated value, estimates probabilistic predicted value and calculates between predicted value and measured value
Weighted average.Algorithm carries out state recursion according to input quantity electric current, voltage, temperature etc., obtains the value of estimation, and provide estimation
Error constantly corrects result further according to evaluated error, to minimize evaluated error.Kalman filtering method exists
Very high precision can be kept in estimation process, and has good correcting action to error.It is accumulated using load voltage and electric current
Score value carries out dynamic estimation to SOC, is integrated in time to the electric current in charge or discharge, to calculate battery
The variation of electricity is estimated.In this way using battery as a closed system, when electricity calculates, it is only necessary to measure the battery of disengaging
Electric energy simultaneously adds up to it, is compared with the electricity of state-of-charge to estimate that battery is current by the charge/discharge electricity amount of accumulation
Electricity.Due to that need not consider that the influence of other factors, this method implement simple direct.The calculation formula of current state is such as
Under
SCO0For 100% state-of-charge of battery, CN is battery nominal capacity：I is battery current：η is efficiency for charge-discharge.
Further, voltage and current acquisition chip uses CS5463.Current sensor is Hall open-loop current sensor, electricity
Detection range 0 is flowed to 1000A, and current sensor passes through the positive or negative pole conducting wire of battery pack output.
Further, main control module has 2 road CAN interfaces, is used for control system（ECU）Or other CAN buses
Transmit-Receive Unit is communicated.Can be by CAN buses by the stagnation pressure of battery pack, total current, SOC, the information such as failure are transmitted in real time
ECU or other CAN bus transceiving units.
Further, data acquisition module is by the various information of battery pack（Voltage, electric current, temperature, SOC, charged state,
Battery charger failure etc.）It is shown on a display screen in real time.When failure, buzzer sends out alarm to user, display
Specific fault type is shown on screen simultaneously.Display uses LCD12864.It touches screen color and uses industrial design standard, bear dirty, fit
Conjunction uses in factory's rugged environment.
Further, it is communicated with host computer by USB interfaces, it will be under battery failures information preservation in main control module
Come, it is convenient that data analysis is carried out to battery pack.
Further, EMS is provided with powerful System self-test function, after system electrification to voltage, temperature, communication etc. into
Row detection ensures that system itself is working properly.
Further, when Battery case temperature is more than setting value, start blower fan module.In charging process, work as babinet
When temperature is higher than 35 DEG C, fan is opened；When spin manifold temperature is higher than 45 DEG C, charge circuit is cut off；Spin manifold temperature is less than 30 DEG C
When, open charger.In discharge process, when spin manifold temperature is higher than 35 DEG C, fan is opened；When spin manifold temperature is less than 30 DEG C, close
Close fan.CAN and RS485 communications：It is communicated with main control module by CAN and RS485 buses, by main control module
Send out control command.
Further, single battery uses 18650 lithium batteries in battery pack.
Further, it is also equipped with following advantage；
1. batteries monomer voltage detecting, reference voltage detection 1-5v, high-precision, composition error are less than 5mv, it is suitable for institute
There is the battery pack of voltage within this range to use, overshoot protection, Cross prevention voltage can be arbitrarily arranged within this range.
2. use controlled balanced way, can be more than by the pressure difference detected when charging after the value of setting start it is equal
Weighing apparatus.
3. current measurement（Support current measurement within 300a）.
4. high-precision Coulomb meter function is based on integrated current over time, accurately calculates battery remaining power, be filled with electricity
Deng.
6. support screen shows that battery state, parameter often save monomer voltage.
7. being based on motor Hall pulse detection speed, and remaining course continuation mileage can be calculated.
8. independent temperature measures, temperature overheat protector value can be set.
9. setting double independent real-time monitoring programs of house dog adds second class protection, never crash.
It is the preferred embodiment of the utility model above, it is all to change according to made by technical solutions of the utility model, it is produced
Function without departing from technical solutions of the utility model range when, belong to the scope of protection of the utility model.
Claims (9)
1. one kind being based on embedded intelligence cell managing device, which is characterized in that including：One outer housing and it is set to the shell
Internal main control module and a plurality of it is connected respectively with the main control module and for carrying out charge and discharge to battery in battery modules
The equalization control module of control；Further include a plurality of being connected respectively with the main control module and being correspondingly arranged in battery in battery modules
Data acquisition module of the place for data acquisition；The data acquisition module includes battery voltage acquisition unit, battery current inspection
Survey unit, battery temperature collecting unit and temperature collection unit.
2. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that the Balance route mould
Block corresponds to the battery being connected to through terminals and cable in the battery modules；The main control module through corresponding terminals with
And cable connection is connected with the data acquisition module；The one side of the outer housing is offered for the Balance route to be arranged
The first through hole of module terminals and for be arranged with the second through-hole of the matched terminals of the data acquisition module.
3. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that the main control module packet
It includes：STM32F103ZET6；The battery temperature collecting unit and the temperature collection unit include paster thermistor
PT100；The battery voltage acquisition unit includes a CS5463；The battery current detection unit includes that Hall open-loop current passes
Sensor.
4. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that the Balance route mould
Block includes first resistor, second resistance, 3rd resistor, the 4th resistance, field-effect tube, the first triode, the second triode, optocoupler
And phase inverter；The input terminal of the phase inverter is connected with the main control module, and output end is connected to institute through the 4th resistance
State the anode of the light emitting diode in optocoupler；The minus earth of light emitting diode in the optocoupler；Light-sensitive device in the optocoupler
One end respectively with battery in the collector of second triode, the drain electrode of the field-effect tube and the battery modules
Cathode is connected；In the optocoupler other end of light-sensitive device respectively with one end of the first resistor, the second resistance one
End is connected；The other end of the second resistance is connected with the base stage of first triode and second triode respectively；
The other end of the first resistor respectively with the collector of first triode, one end of the 3rd resistor and the electricity
The anode of battery is connected in the module of pond；The emitter of first triode is connected with the emitter of second triode, and
It is connected with the grid of the field-effect tube；The source electrode of the field-effect tube is connected with the other end of the 3rd resistor.
5. according to claim 4 be based on embedded intelligence cell managing device, which is characterized in that first triode
For PNP pipe, second triode is managed for NPN；The field-effect tube is metal-oxide-semiconductor.
6. it is according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that further include one with it is described
Main control module is connected and is set to the display screen being opened in the outer housing top groove, which uses one
LCD12864。
7. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that the main control module is also
Include the CAN bus communication interface communicated with external control system or CAN bus Transmit-Receive Unit and the USB communicated with host computer
Interface；The CAN bus communication interface is set in the third through-hole for being opened in the outer housing another side；The USB connects
Mouth is set in the fourth hole for being opened in the outer housing another side.
8. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that further include and the master
Control module be connected and be set to the outer housing buzzer and the main control module be connected and be set to the outer housing top
Light emitting diode in portion's fifth hole.
9. according to claim 1 be based on embedded intelligence cell managing device, which is characterized in that further include being set to institute
The fan stated at battery modules and be connected with the main control module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107681750A (en) * | 2017-11-20 | 2018-02-09 | 福建师范大学福清分校 | Based on embedded intelligence cell managing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107681750A (en) * | 2017-11-20 | 2018-02-09 | 福建师范大学福清分校 | Based on embedded intelligence cell managing device |
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