CN114825511B - Charge-discharge balancing device with new energy automobile battery pack monitoring system - Google Patents
Charge-discharge balancing device with new energy automobile battery pack monitoring system Download PDFInfo
- Publication number
- CN114825511B CN114825511B CN202210302876.6A CN202210302876A CN114825511B CN 114825511 B CN114825511 B CN 114825511B CN 202210302876 A CN202210302876 A CN 202210302876A CN 114825511 B CN114825511 B CN 114825511B
- Authority
- CN
- China
- Prior art keywords
- module
- resistor
- power tube
- battery
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a charge-discharge balancing device with a new energy automobile battery pack monitoring system, which relates to the technical field of power supply control and comprises a power supply module for providing electric energy; the isolation transformation module is used for voltage isolation transformation; the voltage conversion module is used for voltage conversion; the battery environment detection module is used for detecting temperature and humidity; the battery state detection module is used for detecting the voltage and current condition of the device; the main control module is used for estimating the SOC value of the battery pack and balancing the work of the control module; the multi-path selection module is used for controlling electric energy switching; the multi-path battery equalization control module is used for equalizing energy storage; and the battery pack output control module is used for balanced discharge. The charge and discharge balancing device with the new energy automobile battery pack monitoring system controls the balancing work of each module by estimating the SOC value of each battery pack, monitors the charge and discharge of the battery packs, and performs balanced discharge through bidirectional buck-boost during discharge, so that the time required by balancing is effectively reduced.
Description
Technical Field
The invention relates to the technical field of power supply control, in particular to a charge and discharge balancing device with a new energy automobile battery pack monitoring system.
Background
With the popularization of new energy industries in China and abroad, the occupation of an automobile market mainly comprising new energy batteries is also rapidly increased, and the performance and the cruising ability of the new energy automobile batteries are higher requirements, wherein for a battery pack, due to the influence of parameters such as a single battery manufacturing process, initial performance and environment, a problem of inconsistency of a system level chip (SOC) among single batteries can occur in the using process, so that the single batteries are damaged, and therefore, the battery pack charging and discharging balance management is necessary.
Disclosure of Invention
The embodiment of the invention provides a charge and discharge balancing device with a new energy automobile battery pack monitoring system, which aims to solve the problems in the background technology.
According to a first aspect of embodiments of the present invention, there is provided a charge and discharge balancing device with a new energy vehicle battery pack monitoring system, including: the battery pack balancing control system comprises a power supply module, an isolation conversion module, a voltage conversion module, a battery environment detection module, a battery state detection module, a main control module, a multi-path selection module, a multi-path battery balancing control module and a battery pack output control module;
the power supply module is used for providing required electric energy;
the isolation conversion module is connected with the power supply module and is used for performing DC-DC isolation conversion on the electric energy output by the power supply module and outputting the electric energy;
the voltage conversion module is connected with the isolation conversion module and is used for controlling the electric energy output by the isolation conversion module to carry out DC-DC conversion;
the battery environment detection module is connected with the main control module and used for detecting the temperature and humidity condition of the battery pack and outputting a temperature and humidity signal;
the battery state detection module is connected with the voltage conversion module, the multi-path battery equalization control module and the battery pack output control module, and is used for detecting the current condition output by the voltage conversion module, detecting the voltage condition of single batteries in the multi-path battery equalization control module, detecting the current condition of input and output voltages of the battery pack output control module, and detecting the total current condition input into the multi-path battery equalization control module;
the main control module is used for receiving signals output by each module, estimating the SOC value of the battery pack through a Kalman filtering method, controlling the balance work of the voltage conversion module and the multi-path battery balance control module, outputting control signals and data information, and controlling the battery pack output control module to regulate output voltage;
the multi-path selection module is connected with the main control module and the multi-path battery equalization control module and is used for receiving the control signal output by the main control module and isolating and controlling the switching work of electric energy;
the multi-path battery equalization control module is connected with the main control module, the power supply module and the voltage conversion module, is used for receiving a control signal output by the main control module, adjusting the on and off of a switch and then outputting alternating current, is used for converting the alternating current into direct current and carrying out DC-DC (direct current-direct current) adjustment, is used for storing the converted direct current and is used for discharging;
the battery pack output control module is connected with the main control module and the multi-path battery equalization control module and used for receiving the control signal output by the main control module and carrying out bidirectional buck-boost charging and discharging DC-DC control on the electric energy output by the multi-path battery equalization control module during discharging.
Compared with the prior art, the invention has the beneficial effects that: the charge-discharge balancing device with the new energy automobile battery pack monitoring system detects the electric quantity information of each group of battery packs through the cooperation of the main control module and the battery state detection module, estimates the SOC value of each group of battery packs based on a Kalman filtering method, controls the voltage transformation module and the multi-path battery balancing control module to work together, charges the battery pack groups with lower SOC values so as to achieve the consistency of the SOC values of each group of battery packs, performs balanced discharge through bidirectional voltage boosting and reducing in the output control of the battery packs, can effectively reduce the time required by balancing each group of battery packs through balanced charge-discharge, and effectively improves the consistency of the SOC.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic block diagram of a charging and discharging balancing device with a new energy vehicle battery pack monitoring system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a multi-cell equalization control module according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a charge and discharge balancing device with a new energy vehicle battery pack monitoring system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In embodiment 1, referring to fig. 1 and 2, a charge and discharge balancing apparatus with a new energy vehicle battery pack monitoring system includes: the system comprises a power supply module 1, an isolation conversion module 2, a voltage conversion module 3, a battery environment detection module 4, a battery state detection module 5, a main control module 6, a multipath selection module 7, a multipath battery equalization control module 8 and a battery pack output control module 9;
specifically, the power supply module 1 is used for providing required electric energy;
the isolation conversion module 2 is connected with the power supply module 1 and is used for performing DC-DC isolation conversion on the electric energy output by the power supply module 1 and outputting the electric energy;
the voltage conversion module 3 is connected with the isolation conversion module 2 and is used for controlling the electric energy output by the isolation conversion module 2 to carry out DC-DC conversion;
the battery environment detection module 4 is connected with the main control module 6 and used for detecting the temperature and humidity conditions of the battery pack and outputting temperature and humidity signals;
the battery state detection module 5 is connected with the voltage conversion module 3, the multi-path battery equalization control module 8 and the battery pack output control module 9, and is used for detecting the current condition output by the voltage conversion module 3, detecting the voltage condition of a single battery in the multi-path battery equalization control module 8, detecting the current condition of input and output voltages of the battery pack output control module 9, and detecting the total current condition input into the multi-path battery equalization control module 8;
the main control module 6 is used for receiving signals output by each module, estimating the SOC value of the battery pack through a Kalman filtering method, controlling the balance work of the voltage transformation module 3 and the multi-path battery balance control module 8, outputting control signals and data information, and controlling the battery pack output control module 9 to regulate output voltage;
the multi-path selection module 7 is connected with the main control module 6 and the multi-path battery equalization control module 8 and is used for receiving the control signal output by the main control module 6 and isolating and controlling the switching work of electric energy;
the multi-path battery equalization control module 8 is connected with the main control module 6, the power supply module 1 and the voltage conversion module 3, and is used for receiving a control signal output by the main control module 6, adjusting the on/off of a switch and then outputting alternating current, converting the alternating current into direct current and performing DC-DC adjustment, storing the converted direct current and discharging;
and the battery pack output control module 9 is connected with the main control module 6 and the multi-path battery equalization control module 8 and is used for receiving the control signal output by the main control module 6 and performing bidirectional buck-boost charging and discharging DC-DC control on the electric energy output by the multi-path battery equalization control module 8 during discharging.
Further, the multi-path battery equalization control module 8 includes a half-bridge DC-DC conversion unit 801, a first resonant conversion unit 802, a second resonant conversion unit 803, a first energy storage unit 804, and a second energy storage unit 805;
specifically, the half-bridge DC-DC conversion unit 801 is configured to receive a control signal output by the main control module 6 and adjust a switch to be turned off and on so as to output an alternating current;
the first resonant converting unit 802 and the second resonant converting unit 803 are both configured to receive the alternating current output by the half-bridge DC-DC converting unit 801 and the control signal output by the main control module 6, and both are configured to convert the alternating current into direct current and perform DC-DC adjustment;
a first energy storage unit 804 and a second energy storage unit 805, which respectively receive and store the direct current output by the first resonant conversion unit 802 and the second resonant conversion unit 803;
the input end of the half-bridge DC-DC conversion unit 801 is connected to the voltage conversion module 3 and the power supply module 1, the first output end of the half-bridge DC-DC conversion unit 801 is connected to the first energy storage unit 804 through the first resonant conversion unit 802, the second output end of the half-bridge DC-DC conversion unit 801 is connected to the second energy storage unit 805 through the second resonant conversion unit 803, and the control end of the half-bridge DC-DC conversion unit 801, the control end of the first resonant conversion unit 802, and the control end of the second resonant conversion unit 803 are all connected to the main control module 6.
In a specific embodiment, the power supply module 1 may be a dc power supply; the isolation conversion module 2 may use a transformer to perform isolation DC conversion, which is not described herein; the voltage conversion module 3 can adopt a Boost booster circuit; the battery environment detection module 4 may adopt a temperature and humidity sensor, which is not described herein; the battery state detection module 5 can adopt a resistance voltage division circuit to detect the voltage condition and a sampling resistance to detect the current condition; the main control module 6 can adopt, but is not limited to, microcontrollers such as a digital signal processing unit (DSP), a single chip microcomputer and the like; the multi-path selection module 7 can adopt a relay switch circuit; the multi-path battery equalization control module 8 can adopt a half-bridge DC-DC conversion unit 801, a first resonance conversion unit 802 and a second resonance conversion unit 803 to realize equalization control of electric energy; the battery pack output control module 9 may use a bidirectional buck-boost DC-DC conversion circuit to dynamically adjust the input and output voltages.
It should be noted that, in the multi-channel battery equalization control module 8, the number of the first resonant transformation unit 802 and the second resonant transformation unit 803 is not limited, and the first energy storage unit 804 and the second energy storage unit 805 respectively receive the output electric energy of the first resonant transformation unit 802 and the output electric energy of the second resonant transformation unit 803, and the number of the energy storage units depends on the number of the resonant transformation units.
In this embodiment, referring to fig. 3, the voltage conversion module 3 includes a first capacitor C1, a first power tube G1, a first voltage regulator tube VD1, a second capacitor C2, and a first inductor L1;
specifically, one end of the first capacitor C1 is connected to the drain of the first power tube G1 and the first output end of the isolation conversion module 2, the source of the first power tube G1 is connected to the cathode of the first voltage-regulator tube VD1 and to the first end of the second capacitor C2 through the first inductor L1, and the second end of the second capacitor C2 is connected to the anode of the first voltage-regulator tube VD1, the other end of the first capacitor C1 and the second output end of the isolation conversion module 2.
In one embodiment, the first power transistor G1 may be a P-channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
Further, the battery state detection module 5 includes a first resistor R1; the first resonant conversion unit 802 includes a second power tube G2, a second inductor L2, a third power tube G3, a fourth power tube G4, a fifth power tube G5, and a first secondary transformer W1; the first energy storage unit 804 comprises a battery module I and a super capacitor I;
specifically, the first end of the first resistor R1 is connected to the first end of the second capacitor C2, the first end of the first battery module and the first end of the first super capacitor, the second end of the first resistor R1 is connected to the drain of the second power tube G2 and the drain of the fifth power tube G5, the source of the fifth power tube G5 is connected to one end of the first secondary transformer W1 and the drain of the fourth power tube G4, one end of the second inductor L2 is connected to the other end of the first secondary transformer W1, the source of the second power tube G2 is connected to the other end of the second inductor L2 and the source of the third power tube G3, and the source of the fourth power tube G4 and the source of the third power tube G3 are both connected to the second end of the first battery module and the second end of the first super capacitor.
In a specific embodiment, the first resistor R1 is used for detecting a current signal output by the voltage conversion; the second inductor L2, the third power tube G3, the fourth power tube G4, and the fifth power tube G5 may all be P-channel MOSFETs.
Further, the half-bridge DC-DC conversion unit 801 includes a sixth power tube G6, a seventh power tube G7, a third inductor L3, a fourth inductor L4, a first main transformer WA, and a fifth capacitor C5;
specifically, a source electrode of the sixth power tube G6 and a first end of the first main transformer WA are both connected to a drain electrode of the fifth power tube G5, a drain electrode of the sixth power tube G6 is connected to one end of the fourth inductor L4 and one end of the fifth capacitor C5, a source electrode of the seventh power tube G7 is connected to the other end of the fifth capacitor C5 and one end of the third inductor L3, the other end of the third inductor L3 is connected to a second end of the first main transformer WA, the other end of the fourth inductor L4 is connected to a third end of the first main transformer WA, and a fourth end of the first main transformer WA is connected to a drain electrode of the seventh power tube G7.
In an embodiment, the sixth power transistor G6 and the seventh power transistor G7 may be P-channel MOSFETs.
Further, the circuit structure of the second resonant transformation unit 803 is the same as that of the first resonant transformation unit 802; the second energy storage unit 805 includes a second battery module and a second super capacitor, a first end of the second battery module and a first end of the second super capacitor are both connected to the output end of the second resonance transformation unit 803, and a second end of the second battery module and a second end of the second super capacitor are both connected to the ground end of the second resonance transformation unit 803.
Further, the multi-path selection module 7 comprises a first switch K1-1 and a second switch K2-1;
specifically, a first fixed end of the first switch K1-1 is connected to a second end of the first battery module, a second fixed end of the first switch K1-1 is connected to a first end of the first battery module, a movable end of the first switch K1-1 is connected to a first end of the second battery module, a first fixed end of the second switch K2-1 is connected to a second end of the second battery module, a second fixed end of the second switch K2-1 is connected to a first end of the second battery module, and a movable end of the second switch K2-1 is connected to a second output end of the isolation transformation module 2.
In a particular embodiment; the first switch K1-1 and the second switch K2-1 are respectively controlled by a relay (not shown).
Further, the battery state detection module 5 further includes a fourth resistor R4, a fifth resistor R5, a third capacitor C3, a sixth resistor R6, a seventh resistor R7, a fourth capacitor C4, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a sixth capacitor C6, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, and a seventh capacitor C7;
specifically, the first end of the fourth resistor R4 and the one end of the third capacitor C3 are connected to the drain of the second power transistor G2, the first end of the sixth resistor R6 and the first end of the fourteenth resistor R14, the second end of the fourth resistor R4 is connected to the source of the third power transistor G3 through the fifth resistor R5, the second end of the fourteenth resistor R14 is connected to the power supply module 1, one end of the fourth capacitor C4 is connected to the output end of the second resonant transformation unit 803, the second end of the sixth resistor R6 is connected to the other end of the fourth capacitor C4 through the seventh resistor R7, the first end of the tenth resistor R10 is connected to one end of the eighth resistor R8 and one end of the sixth capacitor C6, the second end of the eighth resistor R8 is connected to the other end of the sixth capacitor C6 through the ninth resistor R9, the first end of the eleventh resistor R11 is connected to one end of the seventh capacitor C7 and the first end of the twelfth resistor R12, and the other end of the twelfth resistor R12 is connected to the seventh capacitor C7 and the ground through the thirteenth resistor R13.
In a specific embodiment, the fourth resistor R4 and the fifth resistor R5 are used for detecting voltage signals of the battery module i and the super capacitor i; the sixth resistor R6 and the seventh resistor R7 are used for detecting voltage signals of the battery module II, the super capacitor II, the battery module I and the super capacitor I; the fourteenth resistor R14 is used for detecting a total current signal transmitted by the power supply module 1 to the first energy storage unit 804; the tenth resistor R10 and the eleventh resistor R11 respectively detect the current signal output by the output path control circuit 901 and the current signal output by the battery pack output control module 9; the eighth resistor R8 and the ninth resistor R9 detect the voltage signal output by the output path control circuit 901; the twelfth resistor R12 and the thirteenth resistor R13 detect the voltage signal output by the battery pack output control module 9.
Further, the battery pack output control module 9 includes an output path control circuit 901, an eighth power tube G8, a ninth power tube G9, a fifth inductor L5, a tenth power tube G10, and an eleventh power tube G11;
specifically, a first end of the output path control circuit 901 is connected to a first end of the first battery module, a second end of the output path control circuit 901 is connected to a second output end of the isolation conversion module 2, a third end of the output path control circuit 901 is connected to a first end of an eighth resistor R8, a fourth end of the output path control circuit 901 is connected to a source of a ninth power tube G9, a drain of the eighth power tube G8 is connected to a second end of a tenth resistor R10, a source of the eighth power tube G8 is connected to a drain of the ninth power tube G9 and is connected to a source of the tenth power tube G10 and a drain of the eleventh power tube G11 through a fifth inductor L5, a drain of the tenth power tube G10 is connected to a second end of the eleventh resistor R11, and a source of the eleventh power tube G11 is grounded.
The eighth power tube G8, the ninth power tube G9, the tenth power tube G10 and the eleventh power tube G11 all adopt P-channel MOSFETs.
Further, the main control module 6 includes a first controller U1 and a PWM generator U2;
specifically, the first IO end to the twelfth IO end of the first controller U1 are respectively connected to the second end of the fourteenth resistor R14, the first end of the first resistor R1, the second end of the fourth resistor R4, the second end of the sixth resistor R6, the second end of the eighth resistor R8, the first end of the tenth resistor R10, the second end of the eleventh resistor R11, the first end of the eleventh resistor R11, and the second end of the twelfth resistor R12, and the output end of the first controller U1 is sequentially connected to the gate of the first power tube G1 through the PWM generator U2 to the gate of the eleventh power tube G11.
In a specific embodiment, the first controller U1 may be a DSP chip, and the PWM generator U2 is used to improve the driving capability of the first controller U1 for outputting the pulse modulation signal, and the specific type is not limited.
The invention relates to a charge-discharge balancing device with a new energy automobile battery pack monitoring system, which provides required power through a power supply module 1, directly transmits the required power to a multi-path battery balancing control module 8, receives a control signal output by a main control module 6 through a half-bridge DC-DC conversion unit 801, adjusts the on/off state and then outputs alternating current, receives the alternating current and the control signal output by the main control module 6 through a first resonance conversion unit 802 and a second resonance conversion unit 803, converts the alternating current into direct current, respectively transmits the direct current to a first energy storage unit 804 and a second energy storage unit 805 for electric energy storage, so as to improve the output current to meet the required balancing requirement, simultaneously detects the current and voltage conditions output by the first resonance conversion unit 802 and the second resonance conversion unit 803 through a battery state detection module 5, inputs the total current condition of the multi-path battery balancing control module 8 and the current condition output by a voltage conversion module 3, the reference is provided for the first controller U1 to adjust the conduction angle between the second power tube G2 and the seventh power tube G7, the isolation conversion module 2 performs isolation conversion transmission on the power output by the power supply module 1 through a transformer, the output direct current electric energy performs DC-DC adjustment through the voltage conversion module 3, wherein the voltage conversion module 3 adopts a booster circuit and performs constant current control on the voltage conversion module through the main control module 6, the first controller U1 in the main control module 6 cooperates with the battery state detection module 5 and estimates the SOC value of the battery pack based on a Kalman filtering method, the SOC of each energy storage unit is calculated, the imbalance degree of the SOC of the energy storage units is determined, and the pulse modulation signal is output to control the work of the voltage conversion module 3 and the multi-path selection module 7 so as to charge the energy storage units with lower SOC values, when the energy storage unit with a lower SOC value is charged, the energy storage unit with a normal SOC value is disconnected from the voltage change module, at the time, the multi-path battery equalization control module 8 is an active equalization circuit, the voltage conversion module 3 and the multi-path gating module 7 are SOC equalization circuits of a single group of energy storage units, the two groups of circuits are combined into a two-layer equalization circuit, when the energy storage unit discharges, the main control module 6 is required to control the output channel control circuit 901 to work, the energy storage unit is connected with the battery pack output control module 9, the conduction from the eighth power tube G8 to the eleventh power tube G11 is controlled through the first controller U1, the conduction time sequence from the eighth power tube G8 to the eleventh power tube G11 is changed, the functions of boosting and reducing voltage can be achieved, and further dynamic adjustment of output voltage in the discharging equalization process is achieved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The utility model provides a charge-discharge balancing unit with new energy automobile battery package monitored control system which characterized in that:
this charge-discharge balancing device with new energy automobile battery package monitored control system includes: the battery pack balancing control system comprises a power supply module, an isolation conversion module, a voltage conversion module, a battery environment detection module, a battery state detection module, a main control module, a multipath selection module, a multipath battery balancing control module and a battery pack output control module;
the power supply module is used for providing required electric energy;
the isolation conversion module is connected with the power supply module and is used for carrying out DC-DC isolation conversion on the electric energy output by the power supply module and outputting the electric energy;
the voltage conversion module is connected with the isolation conversion module and is used for controlling the electric energy output by the isolation conversion module to carry out DC-DC conversion;
the battery environment detection module is connected with the main control module and used for detecting the temperature and humidity condition of the battery pack and outputting a temperature and humidity signal;
the battery state detection module is connected with the voltage conversion module, the multi-path battery equalization control module and the battery pack output control module, and is used for detecting the current condition output by the voltage conversion module, detecting the voltage condition of single batteries in the multi-path battery equalization control module, detecting the current condition of input and output voltages of the battery pack output control module, and detecting the total current condition input into the multi-path battery equalization control module;
the main control module is used for receiving the signals output by the modules, estimating the SOC value of the battery pack by a Kalman filtering method, controlling the balance work of the voltage conversion module and the multi-path battery balance control module, outputting control signals and data information, and controlling the battery pack output control module to regulate the output voltage;
the multi-path selection module is connected with the main control module and the multi-path battery equalization control module and is used for receiving the control signal output by the main control module and isolating and controlling the switching work of electric energy;
the multi-path battery equalization control module is connected with the main control module, the power supply module and the voltage conversion module, is used for receiving a control signal output by the main control module, adjusting the on/off of a switch and then outputting alternating current, is used for converting the alternating current into direct current and carrying out DC-DC adjustment, is used for storing the converted direct current and is used for discharging;
the battery pack output control module is connected with the main control module and the multi-path battery equalization control module and is used for receiving a control signal output by the main control module and performing bidirectional buck-boost charging and discharging DC-DC control on electric energy output by the multi-path battery equalization control module during discharging;
the voltage conversion module comprises a first capacitor, a first power tube, a first voltage regulator tube, a second capacitor and a first inductor;
one end of the first capacitor is connected with the drain electrode of the first power tube and the first output end of the isolation conversion module, the source electrode of the first power tube is connected with the cathode of the first voltage-regulator tube and is connected with the first end of the second capacitor through the first inductor, and the second end of the second capacitor is connected with the anode of the first voltage-regulator tube, the other end of the first capacitor and the second output end of the isolation conversion module;
the multi-path battery equalization control module comprises a half-bridge DC-DC conversion unit, a first resonance conversion unit, a second resonance conversion unit, a first energy storage unit and a second energy storage unit;
the half-bridge DC-DC conversion unit is used for receiving a control signal output by the main control module, regulating the on-off state of the switch and then outputting alternating current;
the first resonance conversion unit and the second resonance conversion unit are used for receiving alternating current output by the half-bridge DC-DC conversion unit and control signals output by the main control module, and are used for converting the alternating current into direct current and carrying out DC-DC regulation;
the first energy storage unit and the second energy storage unit respectively receive and store direct currents output by the first resonance conversion unit and the second resonance conversion unit;
the input end of the half-bridge DC-DC conversion unit is connected with the voltage conversion module and the power supply module, the first output end of the half-bridge DC-DC conversion unit is connected with the first energy storage unit through the first resonance conversion unit, the second output end of the half-bridge DC-DC conversion unit is connected with the second energy storage unit through the second resonance conversion unit, and the control end of the half-bridge DC-DC conversion unit, the control end of the first resonance conversion unit and the control end of the second resonance conversion unit are all connected with the main control module;
the battery state detection module comprises a first resistor; the first resonance transformation unit comprises a second power tube, a second inductor, a third power tube, a fourth power tube, a fifth power tube and a first secondary transformer; the first energy storage unit comprises a battery module I and a super capacitor I;
the first end of the first resistor is connected with the first end of the second capacitor, the first end of the first battery module and the first end of the first super capacitor, the second end of the first resistor is connected with the drain electrode of the second power tube and the drain electrode of the fifth power tube, the source electrode of the fifth power tube is connected with one end of the first secondary transformer and the drain electrode of the fourth power tube, one end of the second inductor is connected with the other end of the first secondary transformer, the source electrode of the second power tube is connected with the other end of the second inductor and the source electrode of the third power tube, and the source electrode of the fourth power tube and the source electrode of the third power tube are both connected with the second end of the first battery module and the second end of the first super capacitor;
the half-bridge DC-DC conversion unit comprises a sixth power tube, a seventh power tube, a third inductor, a fourth inductor, a first main transformer and a fifth capacitor;
the source electrode of the sixth power tube and the first end of the first main transformer are both connected with the drain electrode of the fifth power tube, the drain electrode of the sixth power tube is connected with one end of a fourth inductor and one end of a fifth capacitor, the source electrode of the seventh power tube is connected with the other end of the fifth capacitor and one end of a third inductor, the other end of the third inductor is connected with the second end of the first main transformer, the other end of the fourth inductor is connected with the third end of the first main transformer, and the fourth end of the first main transformer is connected with the drain electrode of the seventh power tube;
the circuit structure of the second resonance transformation unit is the same as that of the first resonance transformation unit; the second energy storage unit comprises a battery module II and a super capacitor II, a first end of the battery module II and a first end of the super capacitor II are both connected with the output end of the second resonance transformation unit, and a second end of the battery module II and a second end of the super capacitor II are both connected with the grounding end of the second resonance transformation unit;
the battery state detection module further comprises a fourth resistor, a fifth resistor, a third capacitor, a sixth resistor, a seventh resistor, a fourth capacitor, an eighth resistor, a ninth resistor, a tenth resistor, a sixth capacitor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor and a seventh capacitor;
a first end of the fourth resistor and one end of the third capacitor are connected with a drain electrode of the second power tube, a first end of the sixth resistor and a first end of the fourteenth resistor, a second end of the fourth resistor is connected with a source electrode of the third power tube through the fifth resistor, a second end of the fourteenth resistor is connected with the power supply module, one end of the fourth capacitor is connected with an output end of the second resonance transformation unit, a second end of the sixth resistor is connected with the other end of the fourth capacitor through the seventh resistor, a first end of the tenth resistor is connected with one end of the eighth resistor and one end of the sixth capacitor, a second end of the eighth resistor is connected with the other end of the sixth capacitor through the ninth resistor, a first end of the eleventh resistor is connected with one end of the seventh capacitor and a first end of the twelfth resistor, and the other end of the twelfth resistor is connected with the other end of the seventh capacitor and the ground through the thirteenth resistor;
the battery pack output control module comprises an output channel control circuit, an eighth power tube, a ninth power tube, a fifth inductor, a tenth power tube and an eleventh power tube;
the first end of the output channel control circuit is connected with the first end of the first battery module, the second end of the output channel control circuit is connected with the second output end of the isolation conversion module, the third end of the output channel control circuit is connected with the first end of the eighth resistor, the fourth end of the output channel control circuit is connected with the source electrode of the ninth power tube, the drain electrode of the eighth power tube is connected with the second end of the tenth resistor, the source electrode of the eighth power tube is connected with the drain electrode of the ninth power tube and is connected with the source electrode of the tenth power tube and the drain electrode of the eleventh power tube through the fifth inductor, the drain electrode of the tenth power tube is connected with the second end of the eleventh resistor, and the source electrode of the eleventh power tube is grounded.
2. The charge-discharge balancing device with the new energy automobile battery pack monitoring system according to claim 1, wherein the multi-path selection module comprises a first switch and a second switch;
the first immovable end of the first switch is connected with the second end of the first battery module, the second immovable end of the first switch is connected with the first end of the first battery module, the movable end of the first switch is connected with the first end of the second battery module, the first immovable end of the second switch is connected with the second end of the second battery module, the second immovable end of the second switch is connected with the first end of the second battery module, and the movable end of the second switch is connected with the second output end of the isolation conversion module.
3. The charging and discharging balancing device with the new energy automobile battery pack monitoring system according to claim 2, characterized in that the main control module comprises a first controller and a PWM generator;
the first IO end to the twelfth IO end of the first controller are respectively connected with the second end of the fourteenth resistor, the first end of the first resistor, the second end of the fourth resistor, the second end of the sixth resistor, the second end of the eighth resistor, the first end of the tenth resistor, the second end of the eleventh resistor, the first end of the eleventh resistor and the second end of the twelfth resistor, and the output end of the first controller is sequentially connected with the grid electrode of the first power tube to the grid electrode of the eleventh power tube through the PWM generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302876.6A CN114825511B (en) | 2022-03-24 | 2022-03-24 | Charge-discharge balancing device with new energy automobile battery pack monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210302876.6A CN114825511B (en) | 2022-03-24 | 2022-03-24 | Charge-discharge balancing device with new energy automobile battery pack monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114825511A CN114825511A (en) | 2022-07-29 |
| CN114825511B true CN114825511B (en) | 2023-01-31 |
Family
ID=82529958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210302876.6A Active CN114825511B (en) | 2022-03-24 | 2022-03-24 | Charge-discharge balancing device with new energy automobile battery pack monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114825511B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833332B (en) * | 2023-01-13 | 2023-05-05 | 深圳市百千成电子有限公司 | Novel BMS battery management system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000012104A (en) * | 1998-06-24 | 2000-01-14 | Matsushita Electric Ind Co Ltd | Method and device for displaying residual capacity of battery |
| CN1581565A (en) * | 2004-05-20 | 2005-02-16 | 南京航空航天大学 | Cell management device |
| CN101232110A (en) * | 2007-01-25 | 2008-07-30 | 华为技术有限公司 | Method and apparatus for charging batteries |
| EP2224575A1 (en) * | 2009-02-26 | 2010-09-01 | Research In Motion Limited | Method and apparatus for dynamic battery management control in a mobile communication device |
| CN103715869A (en) * | 2013-11-15 | 2014-04-09 | 四川三业电子有限公司 | Multichannel isolation type power device switch drive module of power conversion controller |
| CN107546857A (en) * | 2017-09-07 | 2018-01-05 | 北方奥钛纳米技术有限公司 | The test system and method for energy-storage system |
| CN108331714A (en) * | 2018-03-29 | 2018-07-27 | 上海大学 | A kind of electronic sail controllably drives generator system |
| CN111654069A (en) * | 2019-03-04 | 2020-09-11 | 深圳市科比特航空科技有限公司 | Unmanned aerial vehicle battery charge and discharge control device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112013010923B1 (en) * | 2010-11-02 | 2020-04-28 | Navitas Solutions Inc | wireless battery area network for an intelligent battery management system |
| CN105140981B (en) * | 2015-06-17 | 2020-05-12 | 广西科技大学 | Active equalization control method for lithium battery |
| CN104935067A (en) * | 2015-07-06 | 2015-09-23 | 诸暨市沃思环保技术有限公司 | Environmental monitoring station power supply system |
| DE202015106539U1 (en) * | 2015-12-01 | 2017-03-06 | Rp-Technik Gmbh | Condition indicator and communication system for controlling accumulators |
-
2022
- 2022-03-24 CN CN202210302876.6A patent/CN114825511B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000012104A (en) * | 1998-06-24 | 2000-01-14 | Matsushita Electric Ind Co Ltd | Method and device for displaying residual capacity of battery |
| CN1581565A (en) * | 2004-05-20 | 2005-02-16 | 南京航空航天大学 | Cell management device |
| CN101232110A (en) * | 2007-01-25 | 2008-07-30 | 华为技术有限公司 | Method and apparatus for charging batteries |
| EP2224575A1 (en) * | 2009-02-26 | 2010-09-01 | Research In Motion Limited | Method and apparatus for dynamic battery management control in a mobile communication device |
| CN103715869A (en) * | 2013-11-15 | 2014-04-09 | 四川三业电子有限公司 | Multichannel isolation type power device switch drive module of power conversion controller |
| CN107546857A (en) * | 2017-09-07 | 2018-01-05 | 北方奥钛纳米技术有限公司 | The test system and method for energy-storage system |
| CN108331714A (en) * | 2018-03-29 | 2018-07-27 | 上海大学 | A kind of electronic sail controllably drives generator system |
| CN111654069A (en) * | 2019-03-04 | 2020-09-11 | 深圳市科比特航空科技有限公司 | Unmanned aerial vehicle battery charge and discharge control device |
Non-Patent Citations (1)
| Title |
|---|
| 新型电动汽车电池组均衡系统研究;杨芮;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20220115;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114825511A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1306675C (en) | Equipment for managing accumulator battery of motive power utilized in electric automobile | |
| CN105406526B (en) | The integrated design circuit of novel B uck Boosts and charge-discharge circuit and equalizing circuit | |
| US8901889B2 (en) | Discharge control apparatus and discharge control method | |
| CN110323794B (en) | Active equalization control method and circuit | |
| CN102422242A (en) | Control device and control method | |
| CN102638085A (en) | Intelligent storage battery charging and management device for electric vehicles | |
| CN104600799A (en) | Balancing circuit and method of series battery pack | |
| CN102088198A (en) | Energy storage system | |
| CN102185354A (en) | Intelligent charge-discharge management control system of lithium battery pack for electric bicycle | |
| CN109510319B (en) | Energy storage battery system composed of super capacitor, lithium battery and lead-acid battery | |
| KR20170121628A (en) | Electric vehicle charging system and method for charging electric vehicle | |
| WO2012144358A1 (en) | Power supply device, control method for power supply device, and dc power supply system | |
| CN108011425B (en) | Active equalization circuit and method for battery pack | |
| US20240014667A1 (en) | Energy storage system and control method thereof | |
| CN202111486U (en) | Lithium battery group intelligent charge and discharge supervisory control system used for electric bicycle | |
| CN106300550A (en) | The equalizing circuit of a kind of lithium battery big electric current of energy transfer type and balance control method | |
| US20230043269A1 (en) | Charging cabinet, battery pack, and charging system | |
| CN114825511B (en) | Charge-discharge balancing device with new energy automobile battery pack monitoring system | |
| CN110445205B (en) | DC power supply balance management system and control method | |
| CN116707051A (en) | Dual-battery charge-discharge circuit, dual-battery charge-discharge method, electronic device and medium | |
| CN103346605A (en) | Storage battery set voltage balancing device | |
| CN115955117B (en) | Direct-current power supply conversion device for bridging new energy power generation, energy storage and micro-grid | |
| CN102647004A (en) | High-efficiency charge and discharge control circuit and control method thereof | |
| CN107681677A (en) | A kind of battery energy storage system of two-way flyback primary side integrated form | |
| CN204290428U (en) | A kind of integrate motor drives and battery charging function module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |