CN111245060A - Battery pack parallel operation charging and discharging control system and method based on controllable one-way conduction circuit - Google Patents
Battery pack parallel operation charging and discharging control system and method based on controllable one-way conduction circuit Download PDFInfo
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- CN111245060A CN111245060A CN202010161987.0A CN202010161987A CN111245060A CN 111245060 A CN111245060 A CN 111245060A CN 202010161987 A CN202010161987 A CN 202010161987A CN 111245060 A CN111245060 A CN 111245060A
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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
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Abstract
The invention relates to the field of battery management systems, in particular to a battery pack parallel operation charge-discharge control system and a battery pack parallel operation charge-discharge control method based on a controllable unidirectional conduction circuit, which can effectively avoid acquisition errors, ensure the same voltage of each battery pack after parallel operation, ensure the parallel operation safety of the system, simultaneously not only reduce the complexity of the BMS, but also further improve the flexibility of the system application, and the technical scheme is summarized as that the battery pack parallel operation charge-discharge control system based on the controllable unidirectional conduction circuit comprises a battery pack module and a control module, wherein the battery pack module is connected with the control module, and also comprises a unidirectional conduction circuit module which at least comprises two unidirectional conduction circuits, the battery pack module at least comprises two battery packs, the battery packs are connected with the unidirectional conduction circuits in a one-to-one correspondence manner, and the unidirectional conduction circuit module is connected with the, the method can be applied to various battery pack parallel operation scenes and charge and discharge control systems.
Description
Technical Field
The invention relates to the field of battery management systems, in particular to a battery pack parallel operation charging and discharging control system and method based on a controllable one-way conduction circuit.
Background
With the rapid development of social progress, urbanization construction and arrival of an intelligent era, the energy consumption is increasing day by day, the future shortage of petroleum resources, renewable energy sources and novel energy storage standby power sources meet greater market demands, such as solar energy storage, wind energy storage and the like. At present, the energy storage battery mainly comprises a lead-acid battery and a lithium battery pack, and the lead-acid battery is low in energy density, large in size and heavy in weight and is gradually replaced by the lithium battery pack in the field of energy storage. Lithium cell group in use will be more complicated than lead acid battery, generally all needs BMS to manage and control, guarantees that the group battery works under the safe state.
Different application scenarios have different requirements on the total capacity of the battery, and it is common practice to ensure longer-time power supply by connecting a plurality of battery packs in parallel. However, different lithium battery packs have different electric quantities, and the direct parallel connection of the battery packs with high voltage may charge the battery pack with a current close to a short circuit to the battery pack with low voltage, so that the BMS short-circuit protection is caused and the normal operation cannot be realized. The safety, reliability and flexibility of the parallel operation and charge-discharge control of the lithium battery pack are problems which need special attention in the design process of the system scheme.
In the prior art, the balance control and charging of the lithium battery are completed through an external balancing device, for example: external equalizing device that charges (CN201320829208.5) of lithium cell group, this utility model patent have proposed a controlling means, and through the voltage information who gathers the lithium cell, microprocessor carries out voltage comparison and controls each way disconnection and the closed battery voltage that makes the series connection lithium of relay keep balanced, and this device mainly controls to the equalizing charge of lithium cell, and for the extra maintenance of mark system, only feasible at certain application scene, and do not consider the voltage acquisition error.
In the parallel operation process of the battery pack, the consistency problem of the voltage of the battery pack also needs to be considered, the traditional parallel operation method of the battery pack usually acquires and detects the voltage of the battery pack in real time through a BMS system, compares data and logically processes the voltage of the battery pack to ensure that the voltage difference of the battery pack is allowed to be accessed within a certain range, the operation complexity of the BMS is increased, and the parallel operation decision problem caused by electric quantity acquisition errors or faults cannot be avoided.
Disclosure of Invention
The invention aims to provide a battery pack parallel operation charging and discharging control system and method based on a controllable unidirectional conduction circuit, which can effectively avoid acquisition errors, keep the voltages of all battery packs after parallel operation consistent, ensure the system parallel operation safety, simultaneously reduce the complexity of a BMS (battery management system), further improve the application flexibility of the system, and can be applied to various battery pack parallel operation scenes and charging and discharging control systems.
The invention adopts the following technical scheme to realize the aim, and the battery pack parallel operation charge-discharge control system based on the controllable one-way conduction circuit comprises a battery pack module and a control module, wherein the battery pack module is connected with the control module;
the control module is used for obtaining voltage information of each battery pack, sequencing according to voltage magnitude, and judging whether the battery packs are in a charging state or a discharging state at present, if the battery packs are in the charging state, the control module controls the unidirectional conduction circuit module to charge in a unidirectional conduction mode, if the battery packs are in the discharging state, the control module controls the unidirectional conduction circuit module to discharge in a unidirectional conduction mode, in the charging state, the control module controls the battery packs to charge and parallel, the battery packs are charged and parallel according to voltage from low to high in sequence, until all the battery packs complete parallel operation, the voltage is kept consistent and charging continues, in the discharging state, the control module controls the battery packs to discharge and parallel operation, the battery packs discharge and parallel operation are sequentially performed according to voltage from high to low, until all the battery packs complete parallel operation, the voltage.
Furthermore, in order to increase the charging safety of the battery pack, the battery pack parallel operation charging and discharging control system based on the controllable unidirectional conducting circuit further comprises a charging detection module, and the charging detection module is connected with the control module.
Furthermore, in order to improve the charging efficiency of the battery pack, the battery pack parallel operation charging and discharging control system based on the controllable unidirectional conducting circuit further comprises a charging module, and the charging module is connected with the charging detection module.
Further, in order to increase the detection capability of the load, the battery pack parallel operation charge and discharge control system based on the controllable unidirectional conducting circuit further comprises a load detection module, and the load detection module is connected with the control module.
The parallel operation charge and discharge control method of the battery pack based on the controllable unidirectional conducting circuit is applied to the parallel operation charge and discharge control system of the battery pack based on the controllable unidirectional conducting circuit, and comprises the following steps:
A. the system is powered on, and the control module acquires the voltage information of each battery pack and sorts the voltage information according to the voltage;
B. the control module judges whether the system is in a charging state or a discharging state at present, if the system is in the charging state, the control module controls the one-way conduction circuit module to be in charging one-way conduction, so that the whole system is in a charging closed state, the step C is carried out, if the system is in the discharging state, the control module controls the one-way conduction circuit module to be in discharging one-way conduction, so that the whole system is in a discharging closed state, and the step D is carried out;
C. in a charging closed state, the control module controls the battery packs to be charged and connected in sequence from low to high according to the voltage, the control module charges the battery pack with the lowest voltage at first, when the voltage of the battery pack rises to be the same as the voltage of the next battery pack, the control module controls the battery packs with the same voltage to be connected in parallel and keeps the same voltage and continuously charged until all the battery packs are connected in parallel, and the voltage is kept consistent and continuously charged;
D. in a discharge closed state, the control module controls the battery packs to be sequentially discharged and connected from high to bottom according to the voltage, the control module firstly controls the battery pack with the highest voltage to start discharging, when the voltage of the battery pack is reduced to be the same as that of the next battery pack, the control module controls the battery packs with the same voltage to be connected in parallel and keeps the voltage consistent and continuously discharged until all the battery packs are connected in parallel, and the voltage is kept consistent and continuously discharged;
further, in order to increase the fault tolerance rate, in step B, the control module determines whether the system is in the charging state or the discharging state includes determining whether the system is currently in the charging state or the discharging state by analyzing the capacity information of the battery pack to compare with predetermined standard capacity information.
The method has the advantages of effectively avoiding acquisition errors, ensuring the voltage consistency of the battery packs after parallel operation, ensuring the safety of the system parallel operation, reducing the complexity of the BMS, further improving the application flexibility of the system, and being applied to various lithium battery pack parallel operation scenes and charging and discharging control systems.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a flow chart of the method of the present invention.
Fig. 3 is a schematic structural diagram of a unidirectional conducting circuit according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and embodiments.
The invention relates to a battery pack parallel operation charge and discharge control system based on a controllable one-way conduction circuit, which has a structural block diagram shown in figure 1 and comprises a battery pack module and a control module, wherein the battery pack module is connected with the control module;
the control module is used for obtaining voltage information of each battery pack, sequencing according to voltage magnitude, and judging whether the battery packs are in a charging state or a discharging state at present, if the battery packs are in the charging state, the control module controls the unidirectional conduction circuit module to charge in a unidirectional conduction mode, if the battery packs are in the discharging state, the control module controls the unidirectional conduction circuit module to discharge in a unidirectional conduction mode, in the charging state, the control module controls the battery packs to charge and parallel, the battery packs are charged and parallel according to voltage from low to high in sequence, until all the battery packs complete parallel operation, the voltage is kept consistent and charging continues, in the discharging state, the control module controls the battery packs to discharge and parallel operation, the battery packs discharge and parallel operation are sequentially performed according to voltage from high to low, until all the battery packs complete parallel operation, the voltage.
The battery pack parallel operation charging and discharging control system based on the controllable unidirectional conduction circuit further comprises a charging detection module, and the charging detection module is connected with the control module, so that the charging safety of the battery pack is improved.
The battery pack parallel operation charging and discharging control system based on the controllable unidirectional conduction circuit further comprises a charging module, and the charging module is connected with the charging detection module, so that the charging efficiency of the battery pack is improved.
The battery pack parallel operation charge and discharge control system based on the controllable unidirectional conduction circuit further comprises a load detection module, wherein the load detection module is connected with the control module, and the load detection capability is improved.
The charging detection module is used for detecting whether the charger is connected with the circuit or not and carrying out safety detection on the circuit in the charging process.
The load detection module is used for detecting whether external load is accessed or not and detecting the load in a load work project.
The invention relates to a parallel operation charge-discharge control method of a battery pack based on a controllable unidirectional conduction circuit, which is applied to a parallel operation charge-discharge control system of the battery pack based on the controllable unidirectional conduction circuit, and the flow chart of the method is shown in figure 2, and the method comprises the following steps:
step 201: the control module acquires voltage information of each battery pack and sorts the voltage information according to the voltage;
step 202: the control module judges whether the system is in a charging state or a discharging state;
step 203: in a charging state, the control module controls the one-way conduction circuit module to be charged and conducted in a one-way mode;
step 204: the control module controls the battery packs to be charged and parallel according to the voltage from low to high in sequence;
step 205: the control module starts charging from the battery pack with the lowest voltage, controls the battery packs with the same voltage to be connected in parallel when the voltage of the battery pack is increased to be the same as the voltage of the next battery pack, keeps the voltage consistent and continuously charges until all the battery packs are connected in parallel, and keeps the voltage consistent and continuously charges;
step 206: in a discharging state, the control module controls the unidirectional conduction circuit module to discharge in unidirectional conduction;
step 207: the control module controls the battery packs to discharge and parallel in sequence from high to low according to the voltage;
step 208: the control module starts to discharge from the battery pack with the highest voltage, controls the parallel operation of the battery packs with the same voltage when the voltage of the battery pack is reduced to be the same as that of the next battery pack, keeps the voltage consistent and discharges continuously until all the battery packs are parallel operated, and keeps the voltage consistent and discharges continuously;
the control module can judge whether the system is in the charging state or the discharging state by analyzing the electric quantity information of the battery pack and comparing the electric quantity information with the preset standard electric quantity information to judge whether the system is in the charging state or the discharging state, so that the fault tolerance rate can be increased, and the condition of judgment errors can be reduced.
The invention can also flexibly set the charging state or the discharging state according to the artificial demand, when the voltage of the battery pack is larger than the set charging standard voltage and the electric quantity does not reach the saturation, the battery pack can be charged or discharged, in this state, the load can be switched in to discharge or the charger can be switched in to charge according to the artificial demand, when the load detection module detects that the load is switched in, the control module judges that the current state is the discharging state, when the charge detection module detects that the charger is switched in the circuit, the control module judges that the current state is the charging state.
An embodiment of the unidirectional circuit of the present invention is shown in fig. 3, and includes a first switch, a second switch, a diode D1, a diode D2, and a control terminal, wherein one end of the second switch is connected to the battery side, the other end of the second switch is connected to one end of the first switch, the other end of the first switch is connected to the bus side, the control terminal of the control module is respectively connected to the control terminals of the first switch and the second switch, the diode D1 is connected in parallel to the first switch, the cathode of the diode D1 is connected to the bus side, the anode of the diode D1 is connected to the battery side, the diode D2 is connected in parallel to the second switch, the cathode of the diode D2 is connected to the battery side, and the anode of the diode D.
When the control end control switch I is closed, the switch II is opened, the current can only flow from the bus side to the battery side, so that the charging one-way conduction is realized, and when the control end control switch II is closed, the switch I is opened, the current can only flow from the charging battery side to the bus side, so that the discharging one-way conduction is realized.
Examples
The voltage of a battery pack 1 is 40V, the voltage of a battery 2 is 45V, the voltage of a battery pack 3 is 50V, the system is powered on, a control module acquires voltage information of three battery packs and sequences the voltages from low to high, the control module judges that the system is in a charging state by analyzing the electric quantity of the battery pack, the control module controls a one-way conduction circuit module to conduct charging in a one-way mode, so that the whole system is in a charging closed state, the battery pack cannot discharge at the moment, the control module charges the battery pack 1 and the battery pack 1 to enter the charging state, when the voltage of the battery pack 1 rises to 45V and is the same as the voltage of the battery pack 2, the control module controls the parallel operation of the battery pack 1 and the battery pack 2 to keep the voltage consistent and charge continuously, when the voltage of the battery pack 1 and the battery pack 2 after the parallel operation rises to 50V, and keeping the voltage consistent and continuously charging after parallel operation.
Through the parallel operation process, the system enters a normal working state after all the parallel operation, the voltage of each battery pack is all consistent, the control module can acquire an external signal, judge the external charging and discharging state in real time and realize the charging and discharging control of the whole battery pack through the control of the one-way conduction circuit; based on the system, when special situations occur, the control can be flexibly carried out, for example, the lithium battery pack is abnormal, replaced and the like, and the control of a single battery pack can be realized by controlling the single circuit one-way conduction module.
The battery pack parallel operation and charge-discharge control system based on the circuit one-way conduction fully exerts the reliability of circuit control and the flexibility of software control, effectively solves the weaknesses of the existing parallel operation schemes, is simple and safe in the whole system implementation, and further improves the reliability and the flexibility.
Under the combination of a hardware structure and a software method, the invention effectively avoids acquisition errors, ensures that the voltages of all battery packs are consistent after parallel operation, ensures the safety of the parallel operation of the system, simultaneously reduces the complexity of the BMS, can further improve the application flexibility of the system, and can be applied to various lithium battery pack parallel operation scenes and charging and discharging control systems.
Claims (6)
1. Group battery parallel operation charge-discharge control system based on controllable one-way circuit that switches on, including group battery module and control module, the group battery module is connected with control module, its characterized in that: the battery pack module at least comprises two battery packs, the battery packs are connected with the unidirectional conduction circuits in a one-to-one correspondence mode, and the unidirectional conduction circuit module is connected with the control module;
the control module is used for obtaining voltage information of each battery pack, sequencing according to voltage magnitude, and judging whether the battery packs are in a charging state or a discharging state at present, if the battery packs are in the charging state, the control module controls the unidirectional conduction circuit module to charge in a unidirectional conduction mode, if the battery packs are in the discharging state, the control module controls the unidirectional conduction circuit module to discharge in a unidirectional conduction mode, in the charging state, the control module controls the battery packs to charge and parallel, the battery packs are charged and parallel according to voltage from low to high in sequence, until all the battery packs complete parallel operation, the voltage is kept consistent and charging continues, in the discharging state, the control module controls the battery packs to discharge and parallel operation, the battery packs discharge and parallel operation are sequentially performed according to voltage from high to low, until all the battery packs complete parallel operation, the voltage.
2. The parallel operation charge and discharge control system of the battery pack based on the controllable unidirectional conducting circuit according to claim 1, characterized in that: the charging detection module is connected with the control module.
3. The parallel operation charge and discharge control system of the battery pack based on the controllable unidirectional conducting circuit according to claim 2, characterized in that: still include the module of charging, the module of charging is connected with the detection module that charges.
4. The parallel operation charge and discharge control system of the battery pack based on the controllable unidirectional conducting circuit according to claim 1, characterized in that: the device also comprises a load detection module, and the load detection module is connected with the control module.
5. The parallel operation charge and discharge control method of the battery pack based on the controllable unidirectional conducting circuit is applied to the parallel operation charge and discharge control system of the battery pack based on the controllable unidirectional conducting circuit according to any one of claims 1 to 4, and comprises the following steps:
A. the system is powered on, and the control module acquires the voltage information of each battery pack and sorts the voltage information according to the voltage;
B. the control module judges whether the system is in a charging state or a discharging state at present, if the system is in the charging state, the control module controls the one-way conduction circuit module to be in charging one-way conduction, so that the whole system is in a charging closed state, the step C is carried out, if the system is in the discharging state, the control module controls the one-way conduction circuit module to be in discharging one-way conduction, so that the whole system is in a discharging closed state, and the step D is carried out;
C. in a charging closed state, the control module controls the battery packs to be charged and connected in sequence from low to high according to the voltage, the control module starts to charge from the battery pack with the lowest voltage at first, when the voltage of the battery pack rises to be the same as that of the next battery pack, the control module controls the battery packs with the same voltage to be connected in parallel and keeps the same voltage and continuously charge until all the battery packs are connected in parallel, and the voltage is kept consistent and the battery packs are continuously charged;
D. and in the discharge closed state, the control module controls the battery packs to be sequentially discharged and connected from high to bottom according to the voltage, the control module firstly controls the battery pack with the highest voltage to start discharging, when the voltage of the battery pack is reduced to be the same as that of the next battery pack, the control module controls the battery packs with the same voltage to be connected in parallel and keeps the voltage consistent and continuously discharged until all the battery packs are connected in parallel, and the voltage consistent and continuously discharged are kept.
6. The parallel operation charge and discharge control method of the battery pack based on the controllable unidirectional conducting circuit according to claim 5, characterized in that: in step B, the control module determining whether the battery pack is currently in the charged state or the discharged state includes determining whether the battery pack is currently in the charged state or the discharged state by analyzing the charge information of the battery pack to compare with predetermined standard charge information.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151887A (en) * | 2020-09-23 | 2020-12-29 | 深圳市拓邦锂电池有限公司 | Automatic equalization maintenance system and method for battery pack, storage medium and battery system |
| CN114336888A (en) * | 2022-01-11 | 2022-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| CN114421028A (en) * | 2020-10-28 | 2022-04-29 | 中车时代电动汽车股份有限公司 | Battery system and battery pack echelon utilization recombination method |
| CN114567028A (en) * | 2021-09-13 | 2022-05-31 | 惠州市乐亿通科技有限公司 | Battery system and parallel operation method and device thereof |
| WO2024021823A1 (en) * | 2022-07-26 | 2024-02-01 | 亿航智能设备（广州）有限公司 | Method and device for collaborative charging of battery packs, and computer-readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005206085A (en) * | 2004-01-23 | 2005-08-04 | Sumitomo Electric Ind Ltd | Power distribution system, power distributor, and braking device |
| CN101534062A (en) * | 2009-04-16 | 2009-09-16 | 华南理工大学 | Improved dual voltage control method and device thereof for matrix converters |
| CN101609994A (en) * | 2008-06-17 | 2009-12-23 | 比亚迪股份有限公司 | Balanced charging device and balanced charging method |
| CN102823121A (en) * | 2010-02-03 | 2012-12-12 | Abb技术有限公司 | Switching module to limit and/or break the current of an electric power line |
| CN104505926A (en) * | 2014-12-31 | 2015-04-08 | 深圳先进技术研究院 | Power battery pack charging system and method |
| CN110138066A (en) * | 2019-03-28 | 2019-08-16 | 深圳市禾望电气股份有限公司 | The method of multiple direct current branch energy accumulation current converter DC side battery access control systems |
-
2020
- 2020-03-10 CN CN202010161987.0A patent/CN111245060A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005206085A (en) * | 2004-01-23 | 2005-08-04 | Sumitomo Electric Ind Ltd | Power distribution system, power distributor, and braking device |
| CN101609994A (en) * | 2008-06-17 | 2009-12-23 | 比亚迪股份有限公司 | Balanced charging device and balanced charging method |
| CN101534062A (en) * | 2009-04-16 | 2009-09-16 | 华南理工大学 | Improved dual voltage control method and device thereof for matrix converters |
| CN102823121A (en) * | 2010-02-03 | 2012-12-12 | Abb技术有限公司 | Switching module to limit and/or break the current of an electric power line |
| CN104505926A (en) * | 2014-12-31 | 2015-04-08 | 深圳先进技术研究院 | Power battery pack charging system and method |
| CN110138066A (en) * | 2019-03-28 | 2019-08-16 | 深圳市禾望电气股份有限公司 | The method of multiple direct current branch energy accumulation current converter DC side battery access control systems |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151887A (en) * | 2020-09-23 | 2020-12-29 | 深圳市拓邦锂电池有限公司 | Automatic equalization maintenance system and method for battery pack, storage medium and battery system |
| CN114421028A (en) * | 2020-10-28 | 2022-04-29 | 中车时代电动汽车股份有限公司 | Battery system and battery pack echelon utilization recombination method |
| CN114567028A (en) * | 2021-09-13 | 2022-05-31 | 惠州市乐亿通科技有限公司 | Battery system and parallel operation method and device thereof |
| CN114567028B (en) * | 2021-09-13 | 2023-01-03 | 惠州市乐亿通科技有限公司 | Battery system and parallel operation method and device thereof |
| CN114336888A (en) * | 2022-01-11 | 2022-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| CN114336888B (en) * | 2022-01-11 | 2024-04-12 | 阳光电源股份有限公司 | Energy storage unit parallel operation control method, battery management system and battery energy storage system |
| WO2024021823A1 (en) * | 2022-07-26 | 2024-02-01 | 亿航智能设备（广州）有限公司 | Method and device for collaborative charging of battery packs, and computer-readable storage medium |
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