CN114552736A - Equalizing system for lithium battery industrial vehicle and working method - Google Patents
Equalizing system for lithium battery industrial vehicle and working method Download PDFInfo
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- CN114552736A CN114552736A CN202210318444.4A CN202210318444A CN114552736A CN 114552736 A CN114552736 A CN 114552736A CN 202210318444 A CN202210318444 A CN 202210318444A CN 114552736 A CN114552736 A CN 114552736A
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- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- 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
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- 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]
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- 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
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- 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
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of lithium battery systems, in particular to a balancing system for a lithium battery industrial vehicle and a working method, wherein the balancing system comprises a power battery pack and a control module connected with the power battery pack, the control module is connected with a data acquisition module and a balancing module, the data acquisition module comprises a single battery voltage acquisition unit, the single battery voltage acquisition unit is used for acquiring the voltage of single batteries of the power battery pack, and the balancing module is used for balancing one or more single batteries; the control module is connected with the cloud data server through the wireless transmission module, the cloud data server is used for analyzing battery data information, sending a balancing instruction to the control module through the wireless transmission module, and balancing one or more single batteries through the balancing module connected with the control module. The battery pack needing to be balanced is balanced in full time through the cloud big data function, the practicability is high, and the battery pack can be effectively managed in the full life cycle of the battery pack.
Description
Technical Field
The invention relates to the technical field of lithium battery systems, in particular to a balancing system for a lithium battery industrial vehicle and a working method.
Background
At present, batteries are required by electric vehicles as power or energy storage devices. The lithium battery has the advantages of high energy density, low self-discharge rate, small pollution, long cycle life and the like, and is gradually the preferred power source of the electric automobile. In practical applications, in order to obtain a sufficiently large voltage, a plurality of unit cells are often used in series in a group. Due to the fact that the inconsistency phenomenon exists among the single batteries, the problems of overcharge and overdischarge of the single batteries and reduction of storage capacity of a battery pack can be caused, and therefore balancing control of the lithium batteries becomes a hot problem of research.
The traditional equalization control technology cannot carry out whole group equalization on the battery pack in real time, and is poor in practicability and poor in equalization effect.
Disclosure of Invention
The invention aims to solve the defects that the traditional equalization control technology cannot carry out whole-group equalization on a battery pack in real time and is poor in practicability and equalization effect, and provides an equalization system for a lithium battery industrial vehicle and a working method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a balancing system for a lithium battery industrial vehicle comprises a power battery pack and a control module connected with the power battery pack, wherein the control module is connected with a data acquisition module and a balancing module, the data acquisition module comprises a single battery voltage acquisition unit, the single battery voltage acquisition unit is used for acquiring the voltage of single batteries of the power battery pack, and the balancing module is used for balancing one or more single batteries;
the control module is connected with the cloud data server through the wireless transmission module, the cloud data server is used for analyzing battery data information, sending a balancing instruction to the control module through the wireless transmission module, and balancing one or more single batteries through the balancing module connected with the control module.
The balancing module is characterized in that a bypass resistor is connected in parallel at two ends of any single battery, the on-off of the bypass resistor is controlled by an MOSFET field effect transistor, and meanwhile, battery data are analyzed in real time through a cloud data server to make an optimal balancing strategy.
The cloud data server comprises an intelligent learning module, and the intelligent learning module is used for analyzing and calculating data.
The balancing module comprises a voltage and current adjusting module, the voltage and current adjusting module is electrically connected with each single battery, the voltage and current adjusting module is used for adjusting the output voltage and/or the output current of one or more single batteries needing to be balanced, and the voltage and current adjusting module is connected with the electric meter for the vehicle.
The balancing module comprises an electricity storage module, and the voltage and current adjusting module is connected with the vehicle electricity meter through the electricity storage module.
A working method of a balancing system for a lithium battery industrial vehicle comprises the steps that single battery information of a power battery pack is collected through a data collection module and is transmitted to a vehicle controller, a vehicle instrument and a charger, the single battery information is transmitted to a cloud data server through a wireless transmission module, the single battery information of the power battery pack is analyzed and calculated through the cloud data server, and a balancing instruction is sent to start a full-time balancing function;
the full-time equalization function comprises: when the power battery pack is electrified and started, acquiring the voltage of a single battery of the power battery pack, judging whether the single battery needs to be balanced, judging the single battery needing to be balanced, calculating the balancing time, and balancing in the discharging process of the travelling crane; stopping for more than one hour, then performing low-power consumption dormancy awakening, collecting the voltage of the single battery, judging whether the single battery needs to be balanced, calculating the balancing time and balancing in the parking process; in the charging process, the voltage of the single battery is collected, whether the single battery needs to be balanced or not is judged, the balancing time is calculated for the single battery with the higher SOC, and the balancing in the charging process is carried out.
During balancing, calculating the voltage value of each single battery of the battery pack and the voltage difference value of the minimum single battery in real time, if the difference value is larger than or equal to a set threshold value, obtaining the serial number of the single batteries and the number of the single batteries of which the difference values exceed the threshold value, defining the single batteries exceeding the threshold value as the single batteries needing balancing, adjusting the output voltage and/or the output current of the single batteries needing balancing through a voltage and current adjusting module, and outputting the extra electric energy of the single batteries needing balancing to an electric instrument of the whole vehicle; or the extra electric energy of the single batteries needing to be balanced is output and stored in the electricity storage module, and the balanced electric energy is transmitted to the electric instrument of the whole vehicle through the electricity storage module.
The equalizing system for the lithium battery industrial vehicle and the working method have the advantages that: the battery pack needing to be balanced is balanced in full time through the cloud big data function, the practicability is high, and the battery pack can be effectively managed in the full life cycle of the battery pack.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
fig. 2 is a schematic structural diagram of the working method 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.
Referring to fig. 1-2, a balancing system for a lithium battery industrial vehicle includes a power battery pack, and a control module connected to the power battery pack, where the control module is connected to a data acquisition module and a balancing module, the data acquisition module includes a single battery voltage acquisition unit, the single battery voltage acquisition unit is used to acquire voltage of a single battery of the power battery pack, and the balancing module is used to balance one or more single batteries; the control module is connected with the cloud data server through the wireless transmission module, the cloud data server is used for analyzing battery data information, sending a balancing instruction to the control module through the wireless transmission module, and balancing one or more single batteries through the balancing module connected with the control module, wherein the cloud data server comprises an intelligent learning module, and the intelligent learning module is used for analyzing and calculating data.
The control strategy of the invention comprises the steps of firstly collecting battery pack information, then transmitting the battery pack information to a vehicle controller, an instrument and a charger, secondly transmitting monomer information data to a cloud data server through a wireless transmission device, optimizing and starting a full-time balancing function through intelligent algorithms such as deep learning, machine learning and the like depending on a large amount of data information of a cloud platform, and performing full-time balancing on the battery pack to be balanced through a cloud big data function, so that the battery pack is strong in practicability and can be effectively managed in the full life cycle of the battery pack; by means of intelligent algorithms such as cloud data server deep learning and machine learning, analysis, calculation and data processing of intelligent cloud big data are carried out, intelligent interconnection is achieved, the power battery pack is protected better, the service life of the battery pack is prolonged, and the wireless transmission module is matched with the wireless transmission equipment for a GSM communication system to achieve a wireless transmission function.
The communication module is used for transmitting and communicating real-time information between the power battery pack and the vehicle controller, the vehicle instrument and the charger; the storage module is used for storing parameter information and data for the power battery pack and providing a data storage function for a balance strategy; the insulation module judges whether the insulation grade of the power battery pack meets the design requirement or not by judging the insulation value of the positive pole and the negative pole to the shell for the whole vehicle management system.
As an implementation mode of the balancing module, the balancing module is formed by connecting a bypass resistor in parallel at two ends of any single battery, the on-off of the bypass resistor is controlled by an MOSFET field effect transistor, meanwhile, battery data are analyzed in real time through a cloud data server to make an optimal balancing strategy, and the energy of the single batteries is released through the bypass resistor, so that the balancing of the single batteries is realized.
As further preferred: the data acquisition module also comprises a single battery current acquisition unit, a single battery temperature acquisition unit and a charging seat temperature acquisition unit.
As another embodiment of the equalization module: the balancing module comprises a voltage and current adjusting module, the voltage and current adjusting module is electrically connected with each single battery and is used for adjusting the output voltage and/or the output current of one or more single batteries needing to be balanced, the voltage and current adjusting module is connected with the vehicle electricity utilization instrument, the output voltage and/or the output current of the single batteries needing to be balanced are adjusted through the voltage and current adjusting module, the data are adjusted to be in accordance with the voltage and/or the current which can be used by the vehicle electricity utilization instrument, extra energy generated during balancing is used for the vehicle electricity utilization instrument, and the waste of resources is reduced; further balanced module includes the electricity storage module, and voltage, electric current adjustment module pass through the electricity storage module and connect the electric instrument for the vehicle, and the extra energy storage that produces when will equilibrating through the electricity storage module is got up, for example through can charge and discharge battery, lead-acid battery, lithium cell etc. and carry out temporary storage, when the instrument of vehicle needs to use, is used for the vehicle instrument or is used for other external equipment with this electric energy, for example charges, provides the electric energy for cell-phone, camping equipment etc..
The specific working method comprises the following steps: a working method of a balancing system for a lithium battery industrial vehicle comprises the steps that single battery information of a power battery pack is collected through a data collection module and is transmitted to a vehicle controller, a vehicle instrument and a charger, the single battery information is transmitted to a cloud data server through a wireless transmission module, the single battery information of the power battery pack is analyzed and calculated through the cloud data server, and a balancing instruction is sent to start a full-time balancing function;
the full time equalization function includes: when the power battery pack is electrified and started, acquiring the voltage of a single battery of the power battery pack, judging whether the single battery needs to be balanced, judging the single battery needing to be balanced, calculating the balancing time, and balancing in the discharging process of the travelling crane; stopping for more than one hour, then performing low-power consumption dormancy awakening, collecting the voltage of the single battery, judging whether the single battery needs to be balanced, calculating the balancing time and balancing in the parking process; in the charging process, the voltage of the single battery is collected, whether the single battery needs to be balanced or not is judged, the balancing time is calculated for the single battery with the higher SOC, and the balancing in the charging process is carried out.
During balancing, calculating the voltage value of each single battery of the battery pack and the voltage difference value of the minimum single battery in real time, if the difference value is larger than or equal to a set threshold value, obtaining the serial number of the single batteries and the number of the single batteries of which the difference values exceed the threshold value, defining the single batteries exceeding the threshold value as the single batteries needing balancing, adjusting the output voltage and/or the output current of the single batteries needing balancing through a voltage and current adjusting module, and outputting the extra electric energy of the single batteries needing balancing to an electric instrument of the whole vehicle; or the extra electric energy of the single batteries needing to be balanced is output and stored in the electricity storage module, the balanced electric energy is transmitted to the electric meter for the whole vehicle through the electricity storage module, if the difference value is smaller than the threshold value, the balance is not carried out, and when the system works, the energy generated during the balance can be fully utilized, so that the resources are saved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any technical solutions, concepts and designs obtained by equivalent substitutions or changes of the technical solutions and the inventive concepts of the present invention by those skilled in the art within the technical scope of the present invention shall be covered by the scope of the present invention.
Claims (10)
1. A lithium battery industrial vehicle equalization system comprises a power battery pack and a control module connected with the power battery pack, and is characterized in that the control module is connected with a data acquisition module and an equalization module, the data acquisition module comprises a single battery voltage acquisition unit, the single battery voltage acquisition unit is used for acquiring the voltage of single batteries of the power battery pack, and the equalization module is used for equalizing one or more single batteries;
the control module is connected with the cloud data server through the wireless transmission module, the cloud data server is used for analyzing battery data information, sending a balancing instruction to the control module through the wireless transmission module, and balancing one or more single batteries through the balancing module connected with the control module.
2. The lithium battery industrial vehicle equalization system according to claim 1, further comprising a communication module, a storage module and an insulation module which are connected with the control module, wherein the communication module is used for transmitting and communicating real-time information between the power battery pack and a vehicle controller, a vehicle instrument and a charger; the storage module is used for storing parameter information and data for the power battery pack and providing a data storage function for a balance strategy; the insulation module judges whether the insulation grade of the power battery pack meets the design requirement or not by judging the insulation value of the positive electrode and the negative electrode to the shell for the whole vehicle management system.
3. The lithium battery industrial vehicle equalization system according to claim 1, wherein the equalization module is formed by connecting a bypass resistor in parallel at two ends of any single battery, the on-off of the bypass resistor is controlled by a MOSFET field effect transistor, and meanwhile, battery data are analyzed in real time through a cloud data server to make an optimal equalization strategy.
4. The lithium battery industrial vehicle equalization system as claimed in claim 1, wherein the cloud data server comprises an intelligent learning module, and the intelligent learning module is used for data analysis and calculation.
5. The lithium ion battery industrial vehicle equalization system as claimed in claim 1, wherein the data acquisition module further comprises a single battery current acquisition unit, a single battery temperature acquisition unit, and a charging stand temperature acquisition unit.
6. The lithium battery industrial vehicle equalization system as claimed in claim 1, wherein the wireless transmission module is a GSM communication system and is configured to perform a wireless transmission function in cooperation with a wireless transmission device.
7. The lithium battery industrial vehicle equalization system according to any one of claims 1-2 and 4-6, wherein the equalization module comprises a voltage and current adjustment module, the voltage and current adjustment module is electrically connected with each single battery, the voltage and current adjustment module is used for adjusting output voltage and/or output current of one or more single batteries needing equalization, and the voltage and current adjustment module is connected with a vehicle electric instrument.
8. The equalizing system and the operating method for the lithium-ion battery industrial vehicle according to claim 7, wherein the equalizing module comprises an electricity storage module, and the voltage and current adjusting module is connected with a vehicle electricity meter through the electricity storage module.
9. A working method of a balancing system for a lithium battery industrial vehicle is characterized in that single battery information of a power battery pack is collected through a data collection module and is transmitted to a vehicle controller, a vehicle instrument and a charger, the single battery information is transmitted to a cloud data server through a wireless transmission module, and the single battery information of the power battery pack is analyzed and calculated through the cloud data server and is sent to a balancing instruction to start a full-time balancing function;
the full-time equalization function comprises: when the power battery pack is electrified and started, acquiring the voltage of a single battery of the power battery pack, judging whether the single battery needs to be balanced, judging the single battery needing to be balanced, calculating the balancing time, and balancing in the discharging process of the travelling crane; stopping for more than one hour, then performing low-power consumption dormancy awakening, collecting the voltage of the single battery, judging whether the single battery needs to be balanced, calculating the balancing time and balancing in the parking process; in the charging process, the voltage of the single battery is collected, whether the single battery needs to be balanced or not is judged, the balancing time is calculated for the single battery with the higher SOC, and the balancing in the charging process is carried out.
10. The working method of the equalizing system for the lithium-ion battery industrial vehicle according to claim 9, characterized in that during equalization, the voltage difference between each single battery voltage value of the battery pack and the minimum single battery voltage is calculated in real time, if the difference is greater than or equal to a set threshold, the number of the single batteries and the number of the single batteries with the difference exceeding the threshold are obtained, the single batteries with the difference exceeding the threshold are defined as the single batteries needing equalization, the voltage and current adjusting module is used for adjusting the output voltage and/or the output current of the single batteries needing equalization, and the extra electric energy of the single batteries needing equalization is output to the electric instrument of the whole vehicle; or the extra electric energy of the single batteries needing to be balanced is output and stored in the electricity storage module, and the balanced electric energy is transmitted to the electric instrument of the whole vehicle through the electricity storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210318444.4A CN114552736A (en) | 2022-03-29 | 2022-03-29 | Equalizing system for lithium battery industrial vehicle and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210318444.4A CN114552736A (en) | 2022-03-29 | 2022-03-29 | Equalizing system for lithium battery industrial vehicle and working method |
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| CN114552736A true CN114552736A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210318444.4A Pending CN114552736A (en) | 2022-03-29 | 2022-03-29 | Equalizing system for lithium battery industrial vehicle and working method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425712A (en) * | 2022-09-19 | 2022-12-02 | 江苏鑫贝通科技有限公司 | Lithium battery management system with balanced control |
| CN115856660A (en) * | 2022-11-10 | 2023-03-28 | 中国汽车工程研究院股份有限公司 | Battery energy balance testing method for hybrid electric vehicle under whole vehicle working condition |
-
2022
- 2022-03-29 CN CN202210318444.4A patent/CN114552736A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115425712A (en) * | 2022-09-19 | 2022-12-02 | 江苏鑫贝通科技有限公司 | Lithium battery management system with balanced control |
| CN115856660A (en) * | 2022-11-10 | 2023-03-28 | 中国汽车工程研究院股份有限公司 | Battery energy balance testing method for hybrid electric vehicle under whole vehicle working condition |
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