Battery pack dual-mode centralized control method and terminal

Abstract

The application discloses a kind of battery pack dual-mode centralized control method, specifically including steps: step S0, whether the slave battery pack is the architecture of preset communication closed loop according to the communication mode of slave battery pack, if yes, then execute step S2, if not, then whether the slave battery pack is the architecture of preset non-communication closed loop, if yes, then execute step S1, if not, then execute step S3-S4;Step S1, sequentially incorporate each slave battery pack and carry out charge-discharge to each slave battery pack electric quantity reaches set value, during if there is new slave battery pack access, then re-execute step S1;Step S2, after sequentially incorporating each slave battery pack and carrying out charge-discharge to each slave battery pack electric quantity reaches set value, cut off slave battery pack charge-discharge or user manually cut off slave battery pack charge-discharge, step S3, enable master battery pack charge-discharge.Step S4, continue charge-discharge until master battery pack electric quantity reaches set value and shut down.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage battery, in particular to a battery pack dual-mode centralized control method and terminal. BACKGROUND

[0002] Under the background of rapid development of new energy market, energy storage products are diversified and tend to be used by the public. Portable energy storage and home energy storage products are particularly prominent.

[0003] Portable energy storage and home energy storage products are diversified, and the demand is rapidly increasing. A complete portable energy storage system includes PCS, battery system, BMS system, main control power distribution system, safety protection system, photovoltaic power generation system, wind power generation system, etc.

[0004] The existing portable energy storage system faces two major problems in the customer application process: one is that the power-on time is not long enough, and the other is that the power is not enough. Therefore, the portable energy storage system currently designed and applied has a battery expansion function, but the expansion data volume is limited, and the customer use has limitations.

[0005] For energy storage systems with multiple slave battery packs, a single communication mode is usually used, which makes it impossible to adapt to different communication modes of slave battery packs. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a battery pack dual-mode centralized control method and terminal, which can select different control schemes according to the communication mode of the slave battery pack.

[0007] To solve the above technical problems, the technical scheme adopted by the present application is:

[0008] A battery pack dual-mode centralized control method, comprising the following steps:

[0009] Step S0, determine whether the slave battery pack is a preset communication closed-loop architecture according to the communication mode of the slave battery pack, if yes, execute step S2, if not, determine whether the slave battery pack is a preset non-communication closed-loop architecture, if yes, execute step S1, if not, execute steps S3-S4;

[0010] Step S1, sequentially incorporate each slave battery pack for charging and discharging until the power of each slave battery pack reaches a set value, then cut off the charging and discharging of the slave battery pack or manually cut off the charging and discharging of the slave battery pack, after cutting off the charging and discharging of the slave battery pack, execute steps S3-S4, if a new slave battery pack is connected during the period, re-execute step S1;

[0011] Step S2, charging and discharging each slave battery pack in sequence until the electric quantity of each slave battery pack reaches a set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack by the user, and executing steps S3-S4 after cutting off the charging and discharging of the slave battery pack;

[0012] Step S3, enabling the charging and discharging of the master battery pack.

[0013] Step S4, continuously charging and discharging until the electric quantity of the master battery pack reaches a set value and shutting down.

[0014] To solve the above technical problems, another technical solution adopted by the present application is:

[0015] A battery pack dual-mode centralized control terminal, comprising a memory, a processor, a communication module, and a computer program stored on the memory and executable on the processor, wherein the processor executes the computer program to communicate with the slave battery pack through the communication module to realize the above steps:

[0016] Step S0, judging whether the slave battery pack is a preset communication closed-loop architecture according to the communication mode of the slave battery pack, executing step S2 if yes, executing step S1 if no, and executing steps S3-S4 if no;

[0017] Step S1, charging and discharging each slave battery pack in sequence until the electric quantity of each slave battery pack reaches a set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack by the user, and executing steps S3-S4 after cutting off the charging and discharging of the slave battery pack, wherein if a new slave battery pack is connected during the process, the step S1 is re-executed;

[0018] Step S2, charging and discharging each slave battery pack in sequence until the electric quantity of each slave battery pack reaches a set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack by the user, and executing steps S3-S4 after cutting off the charging and discharging of the slave battery pack;

[0019] Step S3, enabling the charging and discharging of the master battery pack.

[0020] Step S4, continuously charging and discharging until the electric quantity of the master battery pack reaches a set value and shutting down.

[0021] The present application has the beneficial effect that a battery pack dual-mode centralized control method and terminal, by judging the communication mode of the slave battery pack, selecting different control schemes according to whether the communication of the slave battery pack is closed-loop, and realizing dual-mode centralized control. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a flowchart of a battery pack dual-mode centralized control method according to an embodiment of the present application;

[0023] Figure 2 Structure diagram of the energy storage system of the communication closed loop involved in the embodiment of the present application;

[0024] Figure 3 Structure diagram of the battery pack involved in the present application;

[0025] Figure 4 Structure diagram of the energy storage system of the non-communication closed loop involved in the embodiment of the present application;

[0026] Figure 5 Structure diagram of the energy storage system of the non-communication closed loop involved in the embodiment of the present application;

[0027] Figure 6 Structure diagram of the battery pack dual-mode centralized control terminal of the embodiment of the present application.

[0028] Label explanation:

[0029] 1. A battery pack dual-mode centralized control terminal; 2. A processor; 3. A memory; 4. A communication module. DETAILED DESCRIPTION

[0030] In order to explain the technical content, the achieved purposes and effects of the present application in detail, the following will be explained in combination with the embodiments and the accompanying drawings.

[0031] Please refer to Figure 1 A battery pack dual-mode centralized control method, specifically comprising the following steps:

[0032] Step S0, judging whether the slave battery pack is the preset communication closed loop architecture according to the communication mode of the slave battery pack, if yes, executing step S2, if not, judging whether the slave battery pack is the preset non-communication closed loop architecture, if yes, executing step S1, if not, executing steps S3-S4;

[0033] Step S1, sequentially incorporating each slave battery pack for charging and discharging until the electric quantity of each slave battery pack reaches the set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack by the user, after cutting off the charging and discharging of the slave battery pack, executing steps S3-S4, if there is a new slave battery pack connected during the period, re-executing step S1;

[0034] Step S2, sequentially incorporating each slave battery pack for charging and discharging until the electric quantity of each slave battery pack reaches the set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack by the user, after cutting off the charging and discharging of the slave battery pack, executing steps S3-S4;

[0035] Step S3, enabling the master battery pack to charge and discharge.

[0036] Step S4, continuously charging and discharging until the electric quantity of the master battery pack reaches the set value and the master battery pack is shut down.

[0037] From the above description, the battery pack dual-mode centralized control method and terminal have the beneficial effects that: a battery pack dual-mode centralized control method and terminal, by judging the communication mode of the slave battery pack, selecting different control schemes according to whether the communication of the slave battery pack is closed loop, and realizing dual-mode centralized control.

[0038] Further, the set value specifically includes a charging set value and a discharging set value, the charging set value corresponds to the set value in the charging mode, and the discharging set value corresponds to the set value in the discharging mode.

[0039] From the above description, the energy storage system can be shut down after reaching the set value during charging and discharging, and overcharging and overdischarging are avoided.

[0040] Further, the step S0 specifically includes:

[0041] The step S0 includes:

[0042] The step S01 is to determine whether the slave battery pack works in a pre-set communication closed loop mode, and if yes, the step S2 is executed.

[0043] The step S02 is to scan an external interface.

[0044] The step S03 is to determine whether the slave battery pack is in a pre-set non-communication closed loop mode according to the scanning result of the step S02, if yes, the step S1 is executed, and if not, the slave battery pack is not enabled and the steps S3-S4 are executed.

[0045] The step S1 specifically includes:

[0046] The step S11 is to acquire slave battery pack information.

[0047] The step S12 is to analyze the voltage and SOC information of the acquired slave battery pack and sort the slave battery packs according to the voltage.

[0048] The step S13 is to incorporate the slave battery pack with the highest voltage according to the sorting result, disconnect the master battery pack, and discharge the slave battery pack.

[0049] The step S14 is to incorporate each slave battery pack in sequence according to the sorting result, charge and discharge the slave battery pack until the total electric quantity reaches the set value, and then execute the steps S3-S4, during which it is continuously determined whether a new slave battery pack is connected, and if yes, the step S1 is re-executed.

[0050] The step S2 specifically includes:

[0051] The step S21 is to acquire slave battery pack information.

[0052] The step S22 is to analyze the voltage and SOC information of the acquired slave battery pack and sort the slave battery packs according to the voltage.

[0053] Step S23, according to the result of the sorting, the first battery pack is incorporated into the sorting, the main battery pack is disconnected, and the slave battery pack is discharged to output;

[0054] Step S24, according to the result of the sorting, the slave battery pack is incorporated into the sorting, the slave battery pack is charged and discharged to the total power to reach the set value, and then step S3-S4 is executed.

[0055] As described above, the expansion and control of each slave battery pack are realized.

[0056] Further, the charging and discharging of the slave battery pack according to the result of the sorting is specifically when the absolute value of the voltage difference between the highest ranked slave battery pack in the unincorporated slave battery pack and the parallel bus is less than the set difference value, the highest ranked slave battery pack in the unincorporated slave battery pack is incorporated into the parallel bus, and the operation is repeated until all slave battery packs are incorporated into the discharging.

[0057] As described above, by discharging the battery with higher voltage first and charging the battery with lower voltage first, the balancing between the slave battery packs is realized, and the utilization rate of the energy storage system is improved.

[0058] Further, the set difference value is set according to I*R, wherein I represents the 1C current of the battery, and R represents the internal resistance of the battery.

[0059] As described above, the balancing of the energy between the slave battery packs is realized, and the utilization rate is improved.

[0060] Please refer to Figure 6 A battery pack dual-mode centralized control terminal, comprising a memory, a processor, a communication module, and a computer program stored in the memory and executable on the processor, wherein the processor communicates with the slave battery pack through the communication module to realize the above steps when executing the computer program:

[0061] Step S0, determining whether the slave battery pack is a preset communication closed loop architecture according to the communication mode of the slave battery pack, if yes, executing step S2, if not, determining whether the slave battery pack is a preset non-communication closed loop architecture, if yes, executing step S1, if not, executing steps S3-S4;

[0062] Step S1, incorporating each slave battery pack in sequence to charge and discharge until the energy of each slave battery pack reaches a set value, then cutting off the charging and discharging of the slave battery pack or manually cutting off the charging and discharging of the slave battery pack, and executing steps S3-S4 after cutting off the charging and discharging of the slave battery pack, during which if a new slave battery pack is connected, the step S1 is re-executed;

[0063] Step S2, the slave battery pack is sequentially incorporated into each slave battery pack for charging and discharging to each slave battery pack, and the charging and discharging of the slave battery pack is cut off after the electric quantity of each slave battery pack reaches a set value or the user manually cuts off the charging and discharging of the slave battery pack; after the charging and discharging of the slave battery pack is cut off, steps S3-S4 are executed;

[0064] Step S3, enabling the master battery pack to charge and discharge.

[0065] Step S4, continuously charging and discharging until the electric quantity of the master battery pack reaches a set value and the system is shut down.

[0066] From the above description, the beneficial effects of the present application are that a battery pack dual-mode centralized control method and terminal, by judging the communication mode of the slave battery pack, different control schemes are selected according to whether the communication of the slave battery pack is closed loop, and dual-mode centralized control is realized.

[0067] Further, the set value specifically includes a charging set value and a discharging set value, the charging set value corresponds to the set value in the charging mode, and the discharging set value corresponds to the set value in the discharging mode.

[0068] From the above description, the energy storage system can be shut down after reaching the set value during charging and discharging, and overcharging and overdischarging are avoided.

[0069] Further, the step S0 specifically includes:

[0070] Step S0 includes:

[0071] Step S01, judging whether the slave battery pack is working in a pre-set communication closed loop mode, if yes, executing step S2;

[0072] Step S02, scanning an external interface;

[0073] Step S03, according to the scanning result of step S02, judging whether the slave battery pack is in a pre-set non-communication closed loop mode, if yes, executing step S1, if not, not enabling the slave battery pack and executing steps S3-S4;

[0074] The step S1 specifically includes:

[0075] Step S11, obtaining slave battery pack information;

[0076] Step S12, analyzing according to the obtained voltage and SOC information of the slave battery pack and sorting according to the voltage level;

[0077] Step S13, according to the sorting result, incorporating the slave battery pack ranked first, and disconnecting the master battery pack to discharge the slave battery pack;

[0078] Step S14, according to the result of the sorting, sequentially incorporate each slave battery pack to perform steps S3-S4 after the total power reaches the set value, and continuously determine whether there is a new slave battery pack access, if yes, re-execute step S1.

[0079] The step S2 specifically comprises:

[0080] Step S21, obtaining slave battery pack information;

[0081] Step S22, according to the voltage and SOC information of the obtained slave battery pack, analysis and sorting according to the voltage level;

[0082] Step S23, according to the result of the sorting, incorporate the first sorted slave battery pack, disconnect the master battery pack, and discharge the slave battery pack;

[0083] Step S24, according to the result of the sorting, sequentially incorporate each slave battery pack to perform steps S3-S4 after the total power reaches the set value.

[0084] As described above, the expansion and control of each slave battery pack are realized.

[0085] Further, the step of sequentially incorporating each slave battery pack to perform charging and discharging according to the result of the sorting is specifically that when the absolute value of the voltage difference between the highest ranked slave battery pack in the unincorporated slave battery pack and the parallel bus is less than the set difference value, the highest ranked slave battery pack in the unincorporated slave battery pack is incorporated into the parallel bus, and the operation is repeated until all slave battery packs are incorporated for discharging.

[0086] As described above, by discharging the battery with higher voltage first and charging the battery with lower voltage first, and only when the voltage difference between the slave battery pack and the parallel bus is lower than the set value, the incorporation operation is performed, the balance between each slave battery pack is realized, and the utilization rate of energy storage system energy is improved.

[0087] Further, the set difference value is set according to I*R, wherein I represents the 1C current of the battery, and R represents the internal resistance of the battery.

[0088] As described above, the balance of the electric quantity between each slave battery pack is realized, and the utilization rate is improved.

[0089] Please refer to Figure 1 , the embodiment one of the present application is:

[0090] A battery pack dual-mode centralized control method, which judges the connection mode of the slave battery pack, and selects the control scheme corresponding to the connection mode of the slave battery pack, specifically, it includes:

[0091] Step S0, according to the communication mode of the slave battery pack, it is judged whether the slave battery pack is a preset communication closed loop architecture, if yes, step S2 is executed, if not, it is judged whether the slave battery pack is a preset non-communication closed loop architecture, if yes, step S1 is executed, if not, steps S3-S4 are executed.

[0092] Wherein, for the communication closed loop, the slave battery pack works in the architecture as shown in Figure 2 The architecture includes a master battery pack, a master controller, a PCS inverter, two connection ports, two parallel switches and multiple slave battery packs, wherein the master battery pack and the master controller and the PCS inverter are electrically connected, the BMS controller of the master battery pack is in communication connection with the master controller, the master controller and the PCS controller, each parallel switch and the slave battery pack are in communication connection, and each parallel switch is electrically connected with the external slave battery pack through one connection port. In this architecture, the slave battery pack is connected from one connection port and connected from another connection port in sequence. The hardware connection of this architecture must be completed before starting, and the communication and operation instructions are completed through the daisy chain communication hardware architecture. After disconnection, the working mode is switched, and unless restarted again, the working mode cannot be entered.

[0093] Wherein, the slave battery pack is as shown in Figure 3 It includes a BMS controller, a battery module, two parallel switches and two connection ports, wherein the BMS controller is electrically connected with the battery module and each parallel switch, and is electrically connected with the connection port through each parallel switch, and each parallel switch is electrically connected with one connection port, and each of the two connection ports is used for electrical connection with one slave battery pack to realize parallel and series connection between the slave battery packs.

[0094] The non-communication closed loop architecture works in the hardware architecture as shown in Figures 4-5 In this architecture, each connection port is connected with one slave battery pack system, each slave battery pack system has multiple slave battery packs connected in series with each other, and each slave battery pack system is connected in parallel with each other, which can connect or disconnect the slave battery pack at any time, and the port of the master control board is independently communicated, and the system independently transmits and receives operation instructions to the port.

[0095] Specifically, step S0 includes:

[0096] Step S01, it is judged whether the slave battery pack works in the preset communication closed loop mode, if yes, step S2 is executed.

[0097] Specifically, the master control board communicates with the slave battery pack through the connection port, encodes the slave battery pack according to the order address and judges whether the communication is closed loop.

[0098] Step S02, scanning the external interface.

[0099] Step S03, according to the scanning result of step S02, judge whether the slave battery pack is in the predetermined non-communication closed loop mode, if yes, execute step S1, if not, do not enable the slave battery pack and execute step S3-S4.

[0100] If not, it means that there is no slave battery pack access or the slave battery pack has a communication mode that cannot be identified, and for safety reasons, the slave battery pack is not enabled.

[0101] In this embodiment, the set value is less than 5% during discharge and 100% during charging. In other embodiments, it can also be adjusted according to actual needs, and it can also be a predetermined set value controlled by a touch panel manually.

[0102] Step S1, sequentially incorporate each slave battery pack for charging and discharging to each slave battery pack until the set value is reached, then cut off the charging and discharging of the slave battery pack or manually cut off the charging and discharging of the slave battery pack, after cutting off the charging and discharging of the slave battery pack, execute steps S3-S4, if there is a new slave battery pack access, re-execute step S1.

[0103] Specifically, step S11 includes:

[0104] Step S11, obtain slave battery pack information;

[0105] Specifically, it includes encoding the newly accessed slave battery pack and obtaining various information of the slave battery pack.

[0106] Step S12, analyze according to the voltage and SOC information of the obtained slave battery pack and sort according to the voltage level;

[0107] Specifically, in this embodiment, the batteries are sorted from high to low in voltage during discharge and from low to high in voltage during charging to balance the differences between the batteries and maintain the overall charging and discharging balance.

[0108] Step S13, according to the sorting result, incorporate the first sorted slave battery pack, disconnect the master battery pack, and discharge the slave battery pack;

[0109] Step S14, according to the sorting result, sequentially incorporate each slave battery pack for discharging until the total power reaches the set value, then execute steps S3-S4, and continuously judge whether there is a new slave battery pack access during the period, if yes, re-execute step S1.

[0110] Specifically, the BMS system's main control board periodically issues an addressing command, the slave battery pack feedback informs the BMS main control board, and the BMS main control board judges whether there is a new slave battery pack access or a slave battery pack cutout according to the feedback result.

[0111] When the voltage difference between the highest-voltage slave battery pack among the non-incorporated slave battery packs and the parallel bus is less than the set difference value, the highest-voltage slave battery pack among the non-incorporated slave battery packs is incorporated.

[0112] When the voltage difference between the highest-voltage slave battery pack among the non-incorporated slave battery packs and the parallel bus is less than the set difference value, the highest-voltage slave battery pack among the non-incorporated slave battery packs is incorporated.

[0113] Step S2: Incorporate each slave battery pack in sequence for charging and discharging until the charge of each slave battery pack reaches a set value, and then cut off the charging and discharging of the slave battery pack or manually cut off the charging and discharging of the slave battery pack by the user, and then perform steps S3-S4 after cutting off the charging and discharging of the slave battery pack.

[0114] Specifically, it includes the following steps:

[0115] Step S21: Obtain slave battery pack information;

[0116] It specifically includes encoding the newly connected slave battery pack and obtaining various information of the slave battery pack.

[0117] Step S22: Analyze the voltage and SOC information of the obtained slave battery pack and sort according to the voltage level;

[0118] Specifically, in the embodiment, the batteries are sorted from high to low in voltage during discharging, and the batteries are sorted from low to high in voltage during charging, so as to balance the differences between the batteries and keep the overall charging and discharging balanced.

[0119] Step S23: Incorporate the first slave battery pack according to the sorting result, disconnect the main battery pack, and output the slave battery pack for discharging;

[0120] Step S24: Incorporate each slave battery pack in sequence according to the sorting result for charging and discharging until the total charge reaches a set value, and then perform steps S3-S4.

[0121] When the highest-voltage slave battery pack among the non-incorporated slave battery packs is incorporated for discharging, the absolute value of the voltage difference between the highest-voltage slave battery pack among the non-incorporated slave battery packs and the parallel bus is less than the set difference value, and the set difference value is I*R, where I represents the 1C current of the battery, and R represents the internal resistance of the battery. In the embodiment, the set difference value can be set to 1.5V, for example.

[0122] Step S3: Enable the main battery pack for charging and discharging.

[0123] Step S4, continue charging and discharging until the main battery pack reaches the set value and shuts down.

[0124] Please refer to Figure 6 Embodiment two of the present application is:

[0125] A battery pack dual-mode centralized control terminal 1, comprising a memory 3, a processor 2, a communication module 4, and a computer program stored in the memory 3 and executable on the processor 2, when the processor 2 executes the computer program, communicates with the slave battery pack through the communication module 4 to realize the steps of the above-mentioned embodiment one.

[0126] In summary, the present application provides a battery pack dual-mode centralized control method and terminal, which selects different control schemes according to whether the communication with the slave battery pack is closed-loop by judging the communication mode of the slave battery pack, and realizes dual-mode centralized control.

[0127] The above-mentioned is only an embodiment of the present application, and does not limit the patent range of the present application, any equivalent transformation, direct or indirect application in related technical fields by using the content of the present application specification and drawings, are also included in the patent protection range of the present application.

Claims

1. A dual mode centralized control method for battery packs, characterized in that, Specifically comprising the steps of: The step S0 comprises: The step S01 judges whether the slave battery pack works in the pre-set communication closed loop mode, and if yes, the step S2 is executed; The step S02 scans the external interface; The step S03 judges whether the slave battery pack is in the pre-set non-communication closed loop mode according to the scanning result of the step S02, and if yes, the step S1 is executed, and if not, the slave battery pack is not enabled and the steps S3-S4 are executed; The step S1 comprises: The step S11 acquires the information of the slave battery pack; The step S12 analyzes the voltage and SOC information of the acquired slave battery pack and sorts according to the voltage level; The step S13 incorporates the first sorted slave battery pack according to the sorting result, disconnects the master battery pack, and discharges the slave battery pack; The step S14 incorporates each slave battery pack in sequence according to the sorting result to charge and discharge until the total electric quantity reaches the set value, and then the steps S3-S4 are executed, during which it is continuously judged whether there is a new slave battery pack connected, and if yes, the step S1 is re-executed; The step S2 comprises: The step S21 acquires the information of the slave battery pack; The step S22 analyzes the voltage and SOC information of the acquired slave battery pack and sorts according to the voltage level; The step S23 incorporates the first sorted slave battery pack according to the sorting result, disconnects the master battery pack, and discharges the slave battery pack; The step S24 incorporates each slave battery pack in sequence according to the sorting result to charge and discharge until the total electric quantity reaches the set value, and then the steps S3-S4 are executed; The set value specifically comprises a charging set value and a discharging set value, the charging set value corresponds to the set value of the method in the charging mode, and the discharging set value corresponds to the set value of the method in the discharging mode.

2. The dual mode centralized control method of a battery pack according to claim 1, wherein, The step of incorporating each slave battery pack in sequence according to the sorting result to charge and discharge specifically is that when the voltage difference between the highest ranked slave battery pack in the unincorporated slave battery pack and the parallel bus is less than a set difference value, the highest ranked slave battery pack in the unincorporated slave battery pack is incorporated into the parallel bus, and the step is repeatedly executed until all slave battery packs are incorporated for discharging.

3. The dual mode centralized control method of a battery pack according to claim 1, wherein, When the processor executes the computer program, the communication module is used to communicate with the slave battery pack to realize the following steps:

4. The dual mode centralized control method of a battery pack according to claim 3, wherein, The set difference value is determined according to is set, where I refers to the 1C current of the battery; and R refers to the internal resistance of the battery. 5.A dual-mode centralized control terminal of a battery pack, comprising a memory, a processor, a communication module, and a computer program stored in the memory and executable on the processor, characterized in that, The step S0 comprises: The step S01 judges whether the slave battery pack works in the pre-set communication closed loop mode, and if yes, the step S2 is executed; The step S02 scans the external interface; The step S03 judges whether the slave battery pack is in the pre-set non-communication closed loop mode according to the scanning result of the step S02, and if yes, the step S1 is executed, and if not, the slave battery pack is not enabled and the steps S3-S4 are executed; The step S1 comprises: The step S11 acquires the information of the slave battery pack; The step S12 analyzes the voltage and SOC information of the acquired slave battery pack and sorts according to the voltage level; The step S13 incorporates the first sorted slave battery pack according to the sorting result, disconnects the master battery pack, and discharges the slave battery pack; ​ Step S14, according to the result of the sorting, sequentially incorporate each slave battery pack to the total electric quantity reaches the set value after performing steps S3-S4, during the continuous judgment whether there is a new slave battery pack access, if so, re-perform step S1; The step S2 includes: Step S21, obtaining slave battery pack information; Step S22, according to the voltage and SOC information of the obtained slave battery pack, analysis and sorting according to the voltage level; Step S23, according to the result of the sorting, incorporate the first sorted slave battery pack, disconnect the master battery pack, and discharge the slave battery pack output; Step S24, according to the result of the sorting, sequentially incorporate each slave battery pack to the total electric quantity reaches the set value after performing steps S3-S4; step S3, enable the master battery pack to charge and discharge; Step S4, continue to charge and discharge until the master battery pack reaches the set value and shut down.

6. The dual-mode centralized control terminal of a battery pack according to claim 5, wherein, The set value specifically includes a charging set value and a discharging set value, the charging set value corresponds to the set value of the method in the charging mode, and the discharging set value corresponds to the set value of the method in the discharging mode.

7. The dual-mode centralized control terminal for battery packs of claim 5, wherein, According to the result of the sorting, sequentially incorporating each slave battery pack to charge and discharge specifically when the absolute value of the pressure difference between the highest ranked slave battery pack in the unincorporated slave battery pack and the parallel bus is less than the set difference value, the highest ranked slave battery pack in the unincorporated slave battery pack is incorporated into the parallel bus, and the process is repeated until all slave battery packs are incorporated into the discharge.

8. The dual-mode centralized control terminal of a battery pack according to claim 7, wherein, The set difference value is determined according to is set, where I refers to the 1C current of the battery; and R refers to the internal resistance of the battery.

Images