CN206412797U - A kind of battery system balance control system - Google Patents
A kind of battery system balance control system Download PDFInfo
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- CN206412797U CN206412797U CN201621461981.0U CN201621461981U CN206412797U CN 206412797 U CN206412797 U CN 206412797U CN 201621461981 U CN201621461981 U CN 201621461981U CN 206412797 U CN206412797 U CN 206412797U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a kind of battery system balance control system, the battery modules voltage detection unit of piezoelectric voltage value and charging voltage value in all battery modules of detection being connected including MCU controllers and with MCU controllers, detect the battery modules current value detection unit of all battery modules charging current values, detect the battery modules temperature detecting unit of all battery modules temperature, charging current to battery modules carries out Balance route so that battery modules voltage reaches the battery modules balanced unit of identical standard value, show the display screen of battery modules charging circuit failure, the alarm unit of buzzing alarm is carried out when the temperature of battery modules reaches alarm threshold value or during charging circuit failure；The battery modules balanced unit connects the battery modules current value detection unit.The utility model is convenient to press to each battery modules, the problem of solution is brought because battery modules voltage is unequal.
Description
Technical field
The utility model is related to field of battery management, more specifically to a kind of battery system balance control system.
Background technology
At present, electric vehicle engineering and Development of HEV Technology are quickly grown, and its power source is used multiple batteries
Module is cascaded so as to being powered for automobile, thus, there is that number of battery cells is more, thus state and property for its battery
The monitoring of energy is also more complicated.
During the discharge and recharge use of battery, due to the change of the physical characteristic of battery, such as intensify in voltage, battery
Resistive, the uniformity reduction of each battery modules will cause the deterioration of battery performance or even damage, greatly reduces battery pack
Service life, due in the range of controllable variance in battery modules production, and each module voltage have it is unequal
Property, the control to later stage battery system brings many problems, and is in for a long time under unequal voltage conditions, causes the later stage
Battery system energy utilization rate dramatic decrease, ultimately result in the course continuation mileage number dramatic decrease of electric automobile.For this feelings
Condition, exploitation battery equalization system is highly desirable to.
Utility model content
In view of this, the utility model provides a kind of battery system balance control system, it is intended to which solution avoids battery modules
When being charged, for a long time in the unbalanced situation of voltage so that the service life reduction of battery modules, cause the later stage
The problem of battery system energy utilization rate dramatic decrease.
To achieve the above object, the utility model provides following technical scheme：
A kind of battery system balance control system, including MCU controllers and the detection institute that is connected with the MCU controllers
There is the battery modules voltage detection unit of piezoelectric voltage value and charging voltage value in battery modules, detect all battery modules chargings
It is the battery modules current value detection unit of current value, the battery modules temperature detecting unit of all battery modules temperature of detection, right
The charging current of battery modules carries out Balance route so that battery modules voltage reaches that the battery modules of identical standard value are balanced
Unit, show battery modules charging circuit failure display screen, when the temperature of battery modules reaches alarm threshold value or charging electricity
The alarm unit of buzzing alarm is carried out during the failure of road；The battery modules balanced unit connects the battery modules current value detection
Unit.
The battery modules balanced unit includes PTC protection circuits, the ACDC constant pressure modules U4 being connected with alternating voltage, two
Pole pipe TVS2, constant flow module U5, relay K2, FET Q2；The output end of PTC protection circuits respectively with ACDC constant pressure modules
U4 pin 1,2 is connected, and the ACDC constant pressure modules U4 external pull down resistor R7 of pin 4 is simultaneously grounded；Electric capacity C4 and diode
TVS2 is connected in parallel between ACDC constant pressure module U4 and constant flow module U5；One end in parallel resistance R4 and electric capacity C3 is with diode TVS2's
Negative pole is connected；FET Q2 source electrode connects diode TVS2 negative pole, and FET Q2 drain electrode and constant flow module U5 draw
Pin 1 is connected, and grid is connected with resistance R3；The EN_5 signal ends connection of the resistance R3 other ends and controller；Schottky diode D2
Negative pole be connected and be connected in parallel between relay K2 pin 1 and pin 8 with constant flow module U5 pin 1, constant flow module U5
Pin 2 and the pin 8 of relay be grounded；Relay K2 pin 7 is connected with constant flow module U5 pin 3, constant flow module
The U5 connection battery modules voltage detection unit 5_Vout- of pin 4 ends.
The battery modules current value detection unit includes current sample chip U7, the parallel connection of the current sample chip U7
Pin 1 and pin 2 be connected by fuse F8 with relay K2 pin 5, current sample chip U7 pin 3 and pin 4
5_Vout+ after parallel connection with battery modules voltage detection unit is connected；Current sample chip U7 pin 8 connects 5V power supplys, pin 6
Series capacitance C17 and it is grounded between pin 5, resistance R17 and electric capacity C18 connect latter termination pins 7, other end ground connection.
The PTC protection circuits include fuse F2, piezo-resistance U6, thermistor RT2；Fuse F2 electric current output
End is connected with thermistor RT2 and piezo-resistance U6 one end, and thermistor RT2, the piezo-resistance U6 other end connect respectively
ACDC constant pressure modules U4 pin 1,2 is connected.
The battery modules voltage detection unit is included by filter circuit and battery modules current detecting unit and battery
It is isolation detection module that 5_Vout+, 5_Vout- end of module balanced unit are connected respectively, defeated with the isolation detection module
Go out the operation amplifier module of end connection, the output end of the operation amplifier module connects the voltage sense pin of controller.
The controller connects CAN communication module by CAN communication pin, and the CAN communication pin of the CAN communication module connects
Connect battery system.
The utility model battery system balance control system, each module when can preferably control the battery modules to charge
The temperature value of charging voltage value, charging current value and battery modules, makes each battery modules be in a charging ring in a balanced way
Border, so as to extend the service life of battery modules, reduces use cost.
Brief description of the drawings
Fig. 1 show the frame principle of battery system balance control system provided by the utility model；
Fig. 2 show the circuit diagram of balanced unit provided by the utility model and current detecting unit；
Fig. 3 show the circuit diagram of voltage detection unit provided by the utility model；
Fig. 4 show the circuit diagram of CAN communication module provided by the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe.
Referring to shown in Fig. 1-4, a kind of battery system balance control system, including MCU controllers and controlled with the MCU
The battery modules voltage detection unit of piezoelectric voltage value and charging voltage value, detection institute in all battery modules of detection of device connection
There are battery modules current value detection unit, the battery modules temperature of all battery modules temperature of detection of battery modules charging current value
Spend detection unit, the charging current to battery modules and carry out Balance route so that battery modules voltage reaches identical standard value
Battery modules balanced unit, the display screen for showing battery modules charging circuit failure, in the temperature of battery modules reach warning level
The alarm unit of buzzing alarm is carried out during value or during charging circuit failure；The battery modules balanced unit connects the battery mould
Group current value detection unit.
The utility model by gather each battery modules of battery system upper piezoelectric voltage, charging when charging voltage with
And charging current, then MCU controllers MCU control and handle the data that institute's acquisition testing is arrived, it is possible to achieve control each
The euqalizing current of battery modules so that each module voltage reaches identical standard value.
Wherein, the MCU controllers can battery system be connected in a balanced way with institute by piezoelectric detection port, by surveying
Try data to judge whether the magnitude of voltage of each battery modules reaches defined magnitude of voltage, to make each battery modules voltage exist
In safe range, identical assigned voltage value is reached, and can realize according to the voltage of battery modules to control the equal of battery modules
Weigh current value, so as to realize the equalization request to battery modules voltage.
The battery modules balanced unit includes ACDC constant pressure module U4, and alternating current is converted to direct current using uncontrollable rectifier
Electricity, can export 12VDC by having power supply chip UC3845 and design of transformer into isolation inverse-excitation type switch power-supply；Constant current mould
Block U5, can constitute current constant control using special power source chip XL4015E1, amplifier chip LM358 and power supply chip LM317
Circuit；
During work, there are ACDC constant pressure module U4 that electric main is converted to 12VDC, then export normal condition in 12V
Under, the enable signal for exporting EN_5 by MCU controllers connects relay, constant-current supply is normally exported, then have the electricity of connection
Sampling A/D chip U7 (ACS712-05) is flowed, charging current is sent to MCU by the charging current for this battery core of sampling
(S9S12G128F0MLH) detection pin is detected.
Specifically, shown in Figure 2, the battery modules balanced unit includes fuse F2, piezo-resistance U6, temperature-sensitive electricity
Hinder RT2, ACDC constant pressures module U4, diode TVS2, constant flow module U5, relay K2, FET Q2；The piezo-resistance
U6, fuse F2, thermistor RT2 constitute PTC protection circuits, alternating voltage by PTC protection circuits respectively with ACDC constant pressures
Module U4 pin 1,2 is connected, and ACDC constant pressure modules U4 4 external pull down resistor R7 of pin are simultaneously grounded；Electric capacity C4 and
Diode TVS2 is connected in parallel between ACDC constant pressure module U4 and constant flow module U5；One end in parallel resistance R4 and electric capacity C3 and two poles
Pipe TVS2 negative pole is connected；FET Q2 source electrode connects diode TVS2 negative pole, FET Q2 drain electrode and constant current
Module U5 pins 1 are connected, and grid is connected with resistance R3；Outer meeting resistance R3 is connected with the EN_5 pins of controller；Schottky two
Pole pipe D2 negative pole is connected with constant flow module U5 pin 1, and is connected in parallel between relay K2 pin 1 and pin 8, constant current
Module U5 pin 2 and the pin 8 of relay are grounded；Relay K2 pin 7 is connected with constant flow module U5 pin 3.
With continued reference to shown in Fig. 2, battery modules current detecting unit includes：Current sample chip U7 (ACS712-05), electricity
Stream sampling A/D chip U7 pins 1 and pin 2 are connected by a fuse F8 with relay K2 pins 5, current sample chip U7's
Output signal 5_Vout+ after pin 3 and the parallel connection of pin 4, constant flow module U5 pins 4 output signal 5_Vout-, 5_Vout+, the 5_
Two signals of Vout- as voltage detection unit input signal；Current sample chip U7 pin 8 connects 5V power supplys, the He of pin 6
Series capacitance C17 and it is grounded between pin 5, resistance R17 and electric capacity C18 connect latter termination pins 7, and other end meets DGND
Ground, resistance R17 and electric capacity C18 connection termination load current output end IOUT.
As one embodiment, the battery modules voltage detection unit includes isolation detection chip AMC1200 and fortune
LM358 is put, the magnitude of voltage of battery modules is detected by isolation detection chip AMC1200 2 pin and 3 pin, passes through isolation detection
The pin of chip 7 and 6 pin are output to amplifier LM358；Voltage detecting value is sent to controller MCU (S9S12G128F0MLH) detection pipe
Pin realizes the detection of battery modules voltage.
Specifically, shown in Figure 3, the voltage detection unit includes isolation detection chip U17 (AMC1200), computing
Amplifier U1A (LM358), 5_Vout-, 5_Vout+ signal of battery balanced unit and current detecting unit is believed as input
Number, after being filtered by several resistance (R77, R78, R82, R88) and electric capacity (C55, C56, C60), with isolation detection chip
U17 pin 2 (VIN+) is connected with pin 3 (VIN-), the external 12V voltages of isolation detection chip U17 pins 1 (VDD1), draws
Pin 4 (GND1) is grounded, electric capacity C57 connections pin 1 and pin 4；Isolation detection chip U17 pin 8 (VDD1) and pin 5
(GND1) connected between by electric capacity C58, pin 8 connects 5V voltages, pin 5 is grounded；Operational amplifier U1A passes through its 5 pin, 6 pin
Isolation detection chip U17 pin 6 (VIN-) and pin 7 (VIN+), operational amplifier U1A are connected through resistance R84, R85 respectively
GNGD ends, 8 pin are followed by by its 5 pin connecting resistance R4 and connect D5V voltages, 4 pin connect GNGD ends, and 7 pin connect controller by resistance R83
Voltage signal pin VBAT, resistance R83 meet electric capacity C59 and are followed by GNGD ends, wherein, 6 pin are connected with 7 pin by resistance R87, are passed through
Isolation detection chip U17 (AMC1200) detects the magnitude of voltage of battery modules, passes through isolation detection chip U17 pin 6
(VIN-) and pin 7 (VIN+) is output to operational amplifier U1A, voltage detecting value is sent to the voltage sense pin of controller.
Communicated between the battery modules of the controller and battery system by CAN communication module, the CAN communication
Module includes CAN chips U10 (TJA1051) and common mode inductance L1 (ACT45B)；Pass through CANL and CANH and battery system CAN
Connection, RXCAN and TXACAN are connected with MCU (S9S12G128F0MLH), have completed battery system and MCU communication.
It is shown in Figure 4, specifically, the CAN communication module includes bilateral diode TVS3, common mode inductance L1
(ACT45B), CAN communication chip U10 (TJA1051)；CAN communication chip U10 (TJA1051) RXCAN (4 pin), TXACAN (1
Pin) hold CAN communication pin corresponding with MCU to be connected, CAN communication chip U10 (TJA1051) pin 6 and pin 7 external one
Individual bilateral diode TVS3, bilateral diode TVS3 other end ground connection；CAN communication chip U10 (TJA1051) He of pin 6
Pin 7 is connected with common mode inductance L1 (ACT45B) 3,4 ends again, electric capacity C9, C10 series connection after the other end respectively with common mode inductance
Between CANL, CANH end of L1 (ACT45B) 1,2 ends connection, resistance R8 bridgings and battery system connection, CAN communication chip
One end that ground connection after U10 8 pin and 2 pin connect, 5 pin meet electric capacity C8 is followed by D5V voltages, electric capacity C8 other end ground connection, CAN
Communication chip U10 3 pin connect D5V voltages.
Specifically, described alarm module is alarmed by well known buzzer circuit, the touch display screen and control
The connected mode of device processed is connection circuit well known to those of ordinary skill in the art, is no longer described in detail herein.
In the utility model, the detection circuit of the battery modules temperature detecting unit is adopted as ordinary skill people
In known thermistor detection circuit, the detection circuit on one side is connected with battery modules and the other end is connected with controller, logical
Cross temperature-sensitive resistance detecting circuit thermistor resistance change come change detection circuit output voltage, voltage signal output end
It is connected with the test test side of controller, the voltage signal is detected by controller and the detection of temperature is realized.
The controller MCU can also realize that self is detected using the control of control program, be exactly to set a ratio to MCU
Compared with magnitude of voltage, it is compared, when sampled voltage is excessive, is passed through by the sampled voltage with battery modules voltage detecting circuit
MCU disconnects the charging circuit of corresponding battery modules.
The utility model can according to battery modules magnitude of voltage and detect module temperature, come judge whether adjustment each electricity
The size of the euqalizing current of pond module, to meet the electric voltage equalization that all modules are completed within the identical time.
During work, the current detecting unit input incoming transport is electric, and voltage detection unit is passed through after upper electricity, and sample institute
Some battery modules voltage is simultaneously preserved, and is detected in real time by temperature detecting unit, and when temperature is too high, alarm unit will
Alarm；Open all charging modules to charge to battery modules, charging current, detection electricity are detected by current detecting unit in real time
The voltage in circuit is detected while stream in the lump, and is transferred in MCU and is preserved, the magnitude of voltage detected and the voltage of setting
Value is compared, if voltage is not reaching to the setting value of change all the way, then it represents that this charging circuit has problem, touches display
Screen can show failure, under conditions of all going well, when any voltage of battery modules all the way is charged to maximum voltage, then pass through MCU
This road, complete charge are turned off, other charging circuits are normally carried out charging, after all battery modules charging completes, charge closing
Circuit.
This battery system balance control system, it is convenient to be pressed to each battery modules, solve because of battery modules voltage not phase
The problem of etc. bringing；During to cell system voltage equilibrium, equalizing voltage is safe and reliable.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (7)
1. a kind of battery system balance control system, it is characterised in that connect including MCU controllers and with the MCU controllers
The battery modules voltage detection unit of piezoelectric voltage value and charging voltage value, all electricity of detection in all battery modules of detection connect
The battery modules temperature inspection of the battery modules current value detection unit, all battery modules temperature of detection of pond module charging current value
Survey unit, the charging current to battery modules and carry out Balance route so that battery modules voltage reaches the battery of identical standard value
Module balanced unit, show battery modules charging circuit failure display screen, when the temperature of battery modules reaches alarm threshold value
Or the alarm unit of buzzing alarm is carried out during charging circuit failure；The battery modules balanced unit connects the battery modules electricity
Flow valuve detection unit.
2. battery system balance control system according to claim 1, it is characterised in that the battery modules balanced unit bag
The PTC protection circuits being connected with alternating voltage, ACDC constant pressures module U4, diode TVS2, constant flow module U5, relay K2 are included,
FET Q2；Pin 1,2 of the output end of PTC protection circuits respectively with ACDC constant pressure modules U4 is connected, ACDC constant pressure moulds
The block U4 external pull down resistor R7 of pin 4 is simultaneously grounded；Electric capacity C4 and diode TVS2 are connected in parallel on ACDC constant pressure module U4 and perseverance
Between flow module U5；One end in parallel resistance R4 and electric capacity C3 is connected with diode TVS2 negative pole；FET Q2 source electrode
Diode TVS2 negative pole is connect, FET Q2 drain electrode is connected with constant flow module U5 pins 1, and grid is connected with resistance R3；Electricity
The EN_5 signal ends for hindering the R3 other ends and controller are connected；The phase of pin 1 of Schottky diode D2 negative pole and constant flow module U5
Connect and be connected in parallel between relay K2 pin 1 and pin 8, constant flow module U5 pin 2 and the pin 8 of relay connect
Ground；Relay K2 pin 7 is connected with constant flow module U5 pin 3, the constant flow module U5 connection battery modules voltage inspection of pin 4
Survey unit 5_Vout- ends.
3. battery system balance control system according to claim 2, it is characterised in that the battery modules current value detection
The pin 1 in parallel and pin 2 of unit including current sample chip U7, the current sample chip U7 by fuse F8 with after
Electrical equipment K2 pin 5 is connected, with battery modules voltage detection unit after current sample chip U7 pin 3 and the parallel connection of pin 4
5_Vout+ connections；Current sample chip U7 pin 8 meets between 5V power supplys, pin 6 and pin 5 series capacitance C17 and is grounded,
The latter termination pins 7 of resistance R17 and electric capacity C18 series connection, other end ground connection.
4. battery system balance control system according to claim 2, it is characterised in that the PTC protection circuits include molten
Disconnected device F2, piezo-resistance U6, thermistor RT2；Fuse F2 current output terminal and thermistor RT2 and piezo-resistance U6
One end connection, the pin 1,2 that thermistor RT2, the piezo-resistance U6 other end meet ACDC constant pressure modules U4 respectively is connected.
5. battery system balance control system according to claim 2, it is characterised in that the battery modules voltage detecting list
Member includes 5_Vout+, 5_Vout- end by filter circuit and battery modules current detecting unit and battery modules balanced unit
The isolation detection module connected respectively, the operation amplifier module being connected with the output end of the isolation detection module, the computing
The output end of amplification module connects the voltage sense pin of controller.
6. according to any one of the claim 1-5 battery system balance control systems, it is characterised in that the controller passes through
CAN communication pin connects CAN communication module, the CAN communication pin connection battery system of the CAN communication module.
7. battery system balance control system according to claim 1, it is characterised in that the MCU controllers are
S9S12G128F0MLH。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621461981.0U CN206412797U (en) | 2016-12-29 | 2016-12-29 | A kind of battery system balance control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621461981.0U CN206412797U (en) | 2016-12-29 | 2016-12-29 | A kind of battery system balance control system |
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| CN206412797U true CN206412797U (en) | 2017-08-15 |
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| CN201621461981.0U Active CN206412797U (en) | 2016-12-29 | 2016-12-29 | A kind of battery system balance control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238346A (en) * | 2018-06-14 | 2019-01-18 | 南京鼎瑞医疗器械有限公司 | A kind of operating bed is hydraulic, electrical and battery testing system |
| CN110707255A (en) * | 2019-10-17 | 2020-01-17 | 江苏汇鑫新能源汽车科技有限公司 | New energy automobile battery module placement machine constructs |
| CN113466732A (en) * | 2021-06-28 | 2021-10-01 | 广西电网有限责任公司贵港供电局 | Battery measuring circuit and battery measuring instrument |
| TWI748031B (en) * | 2017-12-25 | 2021-12-01 | 鴻海精密工業股份有限公司 | Electronic device and power control method |
-
2016
- 2016-12-29 CN CN201621461981.0U patent/CN206412797U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI748031B (en) * | 2017-12-25 | 2021-12-01 | 鴻海精密工業股份有限公司 | Electronic device and power control method |
| CN109238346A (en) * | 2018-06-14 | 2019-01-18 | 南京鼎瑞医疗器械有限公司 | A kind of operating bed is hydraulic, electrical and battery testing system |
| CN110707255A (en) * | 2019-10-17 | 2020-01-17 | 江苏汇鑫新能源汽车科技有限公司 | New energy automobile battery module placement machine constructs |
| CN113466732A (en) * | 2021-06-28 | 2021-10-01 | 广西电网有限责任公司贵港供电局 | Battery measuring circuit and battery measuring instrument |
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