CN210516925U - Battery pack parallel management module, energy storage power station and combined energy storage power station - Google Patents
Battery pack parallel management module, energy storage power station and combined energy storage power station Download PDFInfo
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- CN210516925U CN210516925U CN201921523164.7U CN201921523164U CN210516925U CN 210516925 U CN210516925 U CN 210516925U CN 201921523164 U CN201921523164 U CN 201921523164U CN 210516925 U CN210516925 U CN 210516925U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 52
- 238000007599 discharging Methods 0.000 claims abstract description 47
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
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- 238000007796 conventional method Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a parallelly connected management module of battery package, it includes: the battery pack comprises a module main body, at least one slot arranged on the module main body and a first battery pack; the first battery pack is connected with the slot in a detachable mode; the module main body comprises a control unit and a monitoring unit, the monitoring unit is suitable for identifying and monitoring the voltage of the first battery pack, and the control unit controls the discharging step of the first battery pack according to the monitored voltage so as to avoid mutual charging of the first battery packs which are connected in parallel. This technical scheme makes things convenient for the battery package management of discharging, in addition, the utility model also provides an energy storage power station and combination formula energy storage power station based on this parallelly connected management module of battery package, it can make things convenient for effective increase power station electric capacity, extension discharge time.
Description
Technical Field
The utility model relates to a parallelly connected management module of battery package to and energy storage power station and combination formula energy storage power station based on parallelly connected management module of this battery package belongs to energy storage technical field.
Background
The energy storage power station mainly comprises a built-in storage battery, an inverter and an electric control system, the storage battery can be charged by commercial power, solar energy or a generator, the inverter can convert direct current of the storage battery into alternating current for various electric appliances, and a direct current output interface with various voltages can be configured. Portable energy storage power stations have a wide range of applications, for example: the emergency power supply for families or units, field operation, emergency power utilization, disaster relief, outdoor life and travel, the self-contained power supply for yachts and vehicles, a mobile communication base station and the like. However, the energy storage power stations on the market have single structural functions and limited battery capacity, and after the battery capacity is consumed, the power cannot be continuously supplied to the electric equipment.
With the popularization of the electric garden tools, many users hold a plurality of electric garden tools in their hands, and most of the users only use a small part of the electric garden tools, and the usage rate of the tool battery pack in the electric garden tools is also low.
In order to expand the capacity of the energy storage power station, the conventional method is to increase the total capacity of the energy storage power station by connecting a plurality of battery packs and overlapping the plurality of battery packs, but in this way, the battery pack with high voltage often charges the battery pack with low voltage, so that the power supply effect of the power supply is poor, and unnecessary electric energy waste is increased. Furthermore, in some cases, for some high-power electric devices, the output power of a single energy storage power station cannot meet the requirements of the electric devices, and the energy storage power station with higher power needs to be provided to meet the use requirements.
To the above-mentioned not enough that exist in current energy storage power station, need design one kind and hold up, output is big, and can utilize the energy storage power station that the idle instrument battery package of the electronic garden instrument of different kinds got up.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a make things convenient for parallelly connected management module of battery package management of discharging.
Another object of the utility model is to provide an energy storage power station and combination formula energy storage power station based on this parallelly connected management module of battery package, it can make things convenient for effectively increase power station electric capacity, extension discharge time.
The utility model provides a pair of parallelly connected management module of battery package, it includes:
the battery pack comprises a module main body, at least one slot arranged on the module main body and a first battery pack; the first battery pack is detachably connected with the slot;
the module main body comprises a control unit and a monitoring unit, the monitoring unit is suitable for identifying and monitoring the voltage of the first battery pack, and the control unit controls the discharging step of the first battery pack according to the monitored voltage so as to avoid mutual charging of the first battery packs which are connected in parallel.
Further, the discharging step comprises that the first battery pack with high voltage is discharged first until the first battery pack with high voltage is in accordance with the voltages of other first battery packs connected in parallel to each other, and then the first battery packs with high voltage are discharged simultaneously;
or; the discharging step includes the control unit disconnecting a charging path of a first battery pack of low voltage, which is discharged together with other first battery packs.
Further, the first battery pack is suitable for being shared by power mobile working machines such as electric tools and electric gardening tools.
Compared with the prior art, the utility model discloses parallelly connected management module of battery package's beneficial effect is:
according to the technical scheme, the battery packs are managed in a centralized mode to form a unit modular structure, and when the battery pack is used, a single battery pack can be used, or a plurality of battery packs can be used in a parallel connection mode, so that different electric capacity use requirements are met; when a plurality of battery packs are used in a centralized manner for discharging, in order to avoid mutual charging of the battery packs due to different voltages of the battery packs, the technical scheme is that a control unit and a monitoring unit are arranged in a module main body and are suitable for identifying and monitoring the voltage of each battery pack, and the control unit controls the discharging step of each battery pack according to the monitored voltage so as to avoid mutual charging of the battery packs connected in parallel.
The utility model also provides an energy storage power station, it includes:
the battery pack parallel management module is described above;
the inverter and one or more second battery packs which are suitable for being connected with the inverter and used for supplying power are connected with the first battery pack in a parallel combination mode, and discharge is jointly output to be used for the electric energy of the inverter.
Further, the second battery pack comprises an internal battery pack and/or an external battery pack, which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the second battery pack, and the control unit controls the discharging steps of the first battery pack and the second battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the second battery pack which are connected in parallel.
Further, the discharging step comprises discharging the high-voltage battery packs in the first battery pack and the second battery pack first until the high-voltage battery packs are in accordance with the voltages of other battery packs connected in parallel to each other and then starting to discharge simultaneously;
or; the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the second battery pack, and the low-voltage battery pack is discharged together with other battery packs.
Compared with the prior art, the utility model discloses energy storage power station's beneficial effect is:
according to the technical scheme, the battery pack parallel management module is applied to the energy storage power station, so that on one hand, the battery pack parallel management module has all the beneficial effects of the battery pack parallel management module, and the details are not repeated; on the other hand, the battery pack parallel management module is combined with a battery pack carried by the inverter for use, so that the discharge time of the energy storage power station can be effectively prolonged.
Additionally, the utility model also provides a modular energy storage power station, it includes:
the battery pack parallel management module is described above;
a first inverter and a second inverter;
the battery pack parallel management module is suitable for being respectively connected with the first inverter and the second inverter for power supply, and the electric energy output ends of the first inverter and the second inverter are suitable for being connected in parallel to enable the alternating voltages of the first inverter and the second inverter to be output in parallel.
Furthermore, the first inverter and/or the second inverter are/is also respectively and independently provided with one or more third battery packs connected with the first inverter, and the third battery packs are connected with the first battery pack in a parallel combination manner and output and discharge together for the electric energy of the inverters.
Further, the third battery pack comprises an internal battery pack and/or an external battery pack, which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the third battery pack, and the control unit controls the discharging steps of the first battery pack and the third battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the third battery pack which are connected in parallel.
Further, the discharging step comprises discharging the high-voltage battery packs in the first battery pack and the third battery pack first until the high-voltage battery packs are in accordance with the voltages of other battery packs connected in parallel to each other and then starting to discharge simultaneously;
or; the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the third battery pack, and the low-voltage battery pack is discharged together with other battery packs.
Compared with the prior art, the utility model discloses combined energy storage power station's beneficial effect is:
according to the technical scheme, the battery pack parallel management module is applied to the combined energy storage power station, so that on one hand, the combined energy storage power station has all the beneficial effects of the battery pack parallel management module, and the description is omitted; on the other hand, the battery pack parallel management module is combined with a battery pack carried by the inverter for use, so that the discharge time of the energy storage power station can be effectively prolonged, the inverter and the inverter are connected in parallel to enable the alternating voltages of the inverter and the inverter to be output in parallel, the output power of the energy storage power station can be increased, and the high-power use requirement is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1: the schematic block diagram of the battery pack parallel management module in the embodiment of the utility model is shown;
FIG. 2: in the embodiment of the utility model, the first circuit schematic diagram;
FIG. 3: the circuit schematic diagram II in the embodiment of the utility model;
FIG. 4: the utility model discloses energy storage power station embodiment 1 structure principle schematic block diagram;
FIG. 5: the utility model discloses energy storage power station embodiment 2 structure principle schematic block diagram;
FIG. 6: the utility model discloses combination formula energy storage power station concrete embodiment structure principle schematic block diagram.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a battery pack parallel management module includes:
the battery pack comprises a module main body, at least one slot arranged on the module main body and a first battery pack; the first battery pack is detachably connected with the slot;
the module main body comprises a control unit and a monitoring unit, the monitoring unit is suitable for identifying and monitoring the voltage of the first battery pack, and the control unit controls the discharging step of the first battery pack according to the monitored voltage so as to avoid mutual charging of the first battery packs which are connected in parallel.
According to the technical scheme, the battery packs are managed in a centralized mode to form a unit modular structure, and when the battery pack is used, a single battery pack can be used, or a plurality of battery packs can be used in a parallel connection mode, so that different electric capacity use requirements are met; when a plurality of battery packs are used in a centralized manner for discharging, in order to avoid mutual charging of the battery packs due to different voltages of the battery packs, the technical scheme is that a control unit and a monitoring unit are arranged in a module main body and are suitable for identifying and monitoring the voltage of each battery pack, and the control unit controls the discharging step of each battery pack according to the monitored voltage so as to avoid mutual charging of the battery packs connected in parallel.
Specifically, the discharging step includes discharging the first battery pack with high voltage first until the first battery pack with high voltage is simultaneously discharged when the first battery pack with high voltage is consistent with the voltages of other first battery packs connected in parallel.
More specifically, as shown in fig. 2, the control circuit of the above discharging step includes a linkage control switch SW-N; the linkage control switch SW-N comprises a plurality of switches (S1, S2, S3, S4.. SN), and each slot is connected with a switch (S1, S2, S3, S4.. SN), or each first battery pack is internally provided with a switch (S1, S2, S3, S4.. SN); the control circuit also comprises an identification module and a control module; the identification module may identify a voltage of the first battery pack; the control module controls the opening and closing of switches (S1, S2, S3, S4.. SN).
The control module controls the first battery pack to discharge firstly when the voltage of the first battery pack is high, and when the voltage of the first battery pack reaches balance, namely, until the voltages of all the first battery packs are leveled, the control module controls the first battery packs to discharge simultaneously.
In addition, another discharging step includes the control unit disconnecting the charging path of the first battery pack with the low voltage, and the first battery pack with the low voltage is discharged together with other first battery packs.
Specifically, as shown in fig. 3, the control circuit of the discharging step includes a control unit (MCU), an anti-reverse charging unit, and a first MOS transistor (M1) and a second MOS transistor (M2) connected thereto; the first MOS transistor (M1) is connected with the second MOS transistor (M2) in series, and the control unit is electrically connected with the first MOS transistor (M1) and the second MOS transistor (M2); the anti-reverse charging piece is connected with a second MOS (metal oxide semiconductor) tube (M2) in parallel;
the slot is connected with first battery packs, when the voltage of one of the first battery packs is lower than the voltages of other first battery packs, the control unit (MCU) controls the second MOS tube (M2) to be actively closed, the charging path of the first battery pack with the low voltage is closed, the first battery pack with the low voltage is discharged through the anti-reverse charging piece and the first MOS tube to form a loop, only the first battery pack is discharged and not charged, the control unit (MCU) is provided with low-voltage protection, and when the voltage of the low-voltage battery pack is detected to be lower than a low-voltage protection limiting threshold value, the control unit (MCU) cuts off the discharging path.
It is also worth mentioning that the first battery pack is suitable for common use with electric tools including drills, circular saws and the like, electric garden tools including lawnmowers, blowers, pruners, chainsaws and the like, and/or power mobile working machines including snow blowers, lawn mowers and the like.
In addition, as shown in fig. 4 and 5, the utility model also provides an energy storage power station, it includes:
the battery pack parallel management module is described above;
the inverter and one or more second battery packs which are suitable for being connected with the inverter and used for supplying power are connected with the first battery pack in a parallel combination mode, and discharge is jointly output to be used for the electric energy of the inverter.
According to the technical scheme, the battery pack parallel management module is applied to the energy storage power station, on one hand, the battery pack parallel management module has all the beneficial effects of the battery pack parallel management module, namely, the battery packs are managed in a centralized mode to form a unit modular structure, and when the battery pack parallel management module is used, single battery packs can be used, and multiple battery packs can be used in a parallel combination mode to meet different capacitance use requirements; when a plurality of battery packs are used in a centralized manner for discharging, in order to avoid mutual charging of the battery packs due to different voltages of the battery packs, the technical scheme is that a control unit and a monitoring unit are arranged in a module main body and are suitable for identifying and monitoring the voltage of each battery pack, and the control unit controls the discharging step of each battery pack according to the monitored voltage so as to avoid mutual charging of the battery packs connected in parallel; on the other hand, the battery pack parallel management module is combined with a battery pack carried by the inverter for use, so that the discharge time of the energy storage power station can be effectively prolonged.
Furthermore, the first battery pack is suitable for common use with electric tools including electric drills, circular saws and the like, and/or electric garden tools including lawnmowers, hair dryers, pruners, chain saws and the like, and/or power mobile working machines including snow blowers, lawn mowers and the like.
This technical scheme is in order to realize gardens, and is outdoor, household power intercommunication, and the instrument battery package that lets garden instrument can the adaptation energy storage power station use, and the battery capacity of having effectively solved the energy storage power station on the one hand that present many domestic users face is not enough, and on the other hand, garden instrument's instrument battery package has the electricity, but by idle extravagant use situation, and the instrument battery package that lets garden instrument can not only satisfy the gardens operation and use, can also satisfy the use of domestic user energy storage power station.
Further, the second battery pack comprises an internal battery pack and/or an external battery pack, which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the second battery pack, and the control unit controls the discharging steps of the first battery pack and the second battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the second battery pack which are connected in parallel.
Similarly, the discharging step includes that the high-voltage battery packs in the first battery pack and the second battery pack are discharged firstly until the high-voltage battery packs are consistent with the voltages of other battery packs connected in parallel, and the high-voltage battery packs and the other battery packs start to be discharged simultaneously;
or; the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the second battery pack, and the low-voltage battery pack is discharged together with other battery packs.
The principle is also shown in fig. 2 or fig. 3, and the second battery packs are respectively connected to the control circuits of the discharging step.
Specifically, as shown in fig. 2, the control circuit of the discharging step includes a linkage control switch SW-N; the linkage control switch SW-N comprises a plurality of switches (S1, S2, S3, S4.. SN), and each battery pack comprises a first battery pack and a second battery pack which are respectively in one-to-one correspondence with the switches (S1, S2, S3, S4.. SN); the control circuit also comprises an identification module and a control module; the identification module may identify a voltage of each battery pack; the control module controls the opening and closing of switches (S1, S2, S3, S4.. SN).
The control module controls the first discharge of a certain high voltage in the battery packs, and when the voltage of each battery pack reaches balance, namely until the voltages of all the battery packs are leveled, the control module controls each battery pack to be simultaneously merged into the discharge.
As shown in fig. 3, the control circuit of the discharging step includes a control unit (MCU), an anti-reverse charging unit, and a first MOS transistor (M1) and a second MOS transistor (M2) connected to each other; the first MOS transistor (M1) is connected with the second MOS transistor (M2) in series, and the control unit is electrically connected with the first MOS transistor (M1) and the second MOS transistor (M2); the anti-reverse charging piece is connected with a second MOS (metal oxide semiconductor) tube (M2) in parallel;
the control unit (MCU) controls the second MOS tube (M2) on the control path of the low-voltage battery pack to be actively closed when the voltage of one battery pack is lower than the voltage of other battery packs, closes the charging path of the low-voltage battery pack, discharges the low-voltage battery pack through the anti-reverse charging piece and the first MOS tube to form a loop, only discharges and does not charge the battery pack, is provided with low-voltage protection, and cuts off the discharging path when detecting that the voltage of the low-voltage battery pack is lower than a low-voltage protection limit threshold value.
Additionally, as shown in fig. 6, the utility model also provides a modular energy storage power station, it includes:
the battery pack parallel management module is described above;
a first inverter and a second inverter;
the battery pack parallel management module is suitable for being respectively connected with the first inverter and the second inverter for power supply, and the electric energy output ends of the first inverter and the second inverter are suitable for being connected in parallel to enable the alternating voltages of the first inverter and the second inverter to be output in parallel.
In addition, it is also noted that: each power station of the combined energy storage power station is also provided with a user interface, the user interface comprises a display screen, a 12V input/output (I/O) port, a Type-C input port and the like, and a part of the I/O ports are configured to provide the electric energy stored in the power station to load equipment (such as a smart phone, a tablet computer, an electronic reader, a computer, a notebook computer, a smart watch and the like); additionally, alternating current ("AC") inverter ports (e.g., with 110V outlet ports, etc.), direct current ("DC") inputs and/or outputs, USB ports, 12V automobile ports, 12V power plug ports (e.g., Anderson Powerpole, etc.), charging ports (e.g., solar panel charging ports, generator charging ports, power charging ports, outlet charging ports, etc.) are also included.
Furthermore, the first inverter and/or the second inverter are/is also respectively and independently provided with one or more third battery packs connected with the first inverter, and the third battery packs are connected with the first battery pack in a parallel combination manner and output and discharge together for the electric energy of the inverters.
Further, the third battery pack comprises an internal battery pack and/or an external battery pack, which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the third battery pack, and the control unit controls the discharging steps of the first battery pack and the third battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the third battery pack which are connected in parallel.
Further, the discharging step comprises discharging the high-voltage battery packs in the first battery pack and the third battery pack first until the high-voltage battery packs are in accordance with the voltages of other battery packs connected in parallel to each other and then starting to discharge simultaneously;
or; the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the third battery pack, and the low-voltage battery pack is discharged together with other battery packs.
According to the technical scheme, the battery pack parallel management module is applied to the combined energy storage power station, so that on one hand, the combined energy storage power station has all the beneficial effects of the battery pack parallel management module, and the description is omitted; on the other hand, the battery pack parallel management module is combined with a battery pack carried by the inverter for use, so that the discharge time of the energy storage power station can be effectively prolonged, the inverter and the inverter are connected in parallel to enable the alternating voltages of the inverter and the inverter to be output in parallel, the output power of the energy storage power station can be increased, and the high-power use requirement is met.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (10)
1. A battery pack parallel management module, comprising:
the battery pack comprises a module main body, at least one slot arranged on the module main body and a first battery pack; the first battery pack is detachably connected with the slot;
the module main body comprises a control unit and a monitoring unit, the monitoring unit is suitable for identifying and monitoring the voltage of the first battery pack, and the control unit controls the discharging step of the first battery pack according to the monitored voltage so as to avoid mutual charging of the first battery packs which are connected in parallel.
2. The battery pack parallel management module according to claim 1, wherein: the discharging step comprises that the first battery pack with high voltage is discharged firstly until the first battery pack with high voltage is consistent with the voltage of other first battery packs which are connected in parallel to each other, and the first battery packs with high voltage start to be discharged simultaneously;
or;
the discharging step includes the control unit disconnecting a charging path of a first battery pack of low voltage, which is discharged together with other first battery packs.
3. The battery pack parallel management module according to claim 1 or 2, wherein: the first battery pack is adapted to be common to an electric tool and/or an electric garden tool and/or a power mobile work machine.
4. An energy storage power plant, comprising:
the battery pack parallel management module according to any one of claims 1 to 3;
the inverter and one or more second battery packs which are suitable for being connected with the inverter and used for supplying power are connected with the first battery pack in a parallel combination mode, and discharge is jointly output to be used for the electric energy of the inverter.
5. The energy storage power station of claim 4 characterized in that: the second battery pack comprises an internal battery pack and/or an external battery pack which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the second battery pack, and the control unit controls the discharging steps of the first battery pack and the second battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the second battery pack which are connected in parallel.
6. The energy storage power plant of claim 5 characterized in that: the discharging step comprises that the high-voltage battery packs in the first battery pack and the second battery pack are discharged firstly until the high-voltage battery packs are consistent with the voltages of other battery packs connected in parallel to each other and then are discharged simultaneously;
or;
the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the second battery pack, and the low-voltage battery pack is discharged together with other battery packs.
7. A combined energy storage power station, comprising:
the battery pack parallel management module according to any one of claims 1 to 3;
a first inverter and a second inverter;
the battery pack parallel management module is suitable for being respectively connected with the first inverter and the second inverter for power supply, and the electric energy output ends of the first inverter and the second inverter are suitable for being connected in parallel to enable the alternating voltages of the first inverter and the second inverter to be output in parallel.
8. The combined energy storage power plant of claim 7, characterized in that: the first inverter and/or the second inverter are/is also respectively and independently provided with one or more third battery packs connected with the first inverter, and the third battery packs are connected with the first battery pack in a parallel combination mode and output and discharge together for the electric energy of the inverters.
9. The combined energy storage power plant of claim 8, characterized in that: the third battery pack comprises an internal battery pack and/or an external battery pack which are connected in parallel; and the monitoring unit is also suitable for identifying and monitoring the voltage of the third battery pack, and the control unit controls the discharging steps of the first battery pack and the third battery pack according to the monitored voltage so as to avoid the mutual charging of the first battery pack and the third battery pack which are connected in parallel.
10. The combined energy storage power plant of claim 9, characterized in that: the discharging step comprises that the high-voltage battery packs in the first battery pack and the third battery pack are discharged firstly until the high-voltage battery packs are consistent with the voltages of other battery packs connected in parallel to each other and then are discharged simultaneously;
or;
the discharging step includes the control unit disconnecting a charging path of a low-voltage battery pack in the first battery pack and the third battery pack, and the low-voltage battery pack is discharged together with other battery packs.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110544798A (en) * | 2019-09-12 | 2019-12-06 | 浙江齐享科技有限公司 | Battery pack parallel management module, energy storage power station and combined energy storage power station |
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| CN110544798A (en) * | 2019-09-12 | 2019-12-06 | 浙江齐享科技有限公司 | Battery pack parallel management module, energy storage power station and combined energy storage power station |
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Assignee: ZHEJIANG LERA NEW ENERGY POWER TECHNOLOGY Co.,Ltd. Assignor: ZHEJIANG QIXIANG TECHNOLOGY CO.,LTD. Contract record no.: X2023330000879 Denomination of utility model: Battery pack parallel management module, energy storage power station, and combined energy storage power station Granted publication date: 20200512 License type: Common License Record date: 20231124 |