CN215071656U - Energy storage cabinet system and energy storage system - Google Patents
Energy storage cabinet system and energy storage system Download PDFInfo
- Publication number
- CN215071656U CN215071656U CN202120898924.3U CN202120898924U CN215071656U CN 215071656 U CN215071656 U CN 215071656U CN 202120898924 U CN202120898924 U CN 202120898924U CN 215071656 U CN215071656 U CN 215071656U
- Authority
- CN
- China
- Prior art keywords
- energy storage
- management system
- battery pack
- energy
- alternating current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides an energy storage cabinet system and energy storage system. The energy storage cabinet system comprises a plurality of energy storage units, the energy storage units are electrically connected to an external alternating current power grid after being connected in parallel, the energy storage units are in communication connection with an external control system, and each energy storage unit comprises: the retired battery pack system comprises a retired battery pack and a battery management system for detecting the state of the retired battery pack; and two ends of the energy storage and conversion system are respectively electrically connected with the retired battery pack and the external alternating current power grid and are used for converting alternating current provided by the external alternating current power grid into direct current to charge the retired battery pack or converting direct current of the retired battery pack into alternating current to provide electric energy to the outside. The utility model discloses the scheme can not do any processing to decommissioning battery package system, can directly use, and interface etc. are unchangeable completely, through the decommissioning battery package system of the compatible vehicle of external system.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to an energy storage cabinet system and energy storage system.
Background
With the popularization of electric vehicles, the echelon utilization of batteries is also an important research and application direction. At present, battery echelon utilization is mainly to recycle the battery pack and then unpack, detect, recombine and then utilize, and whole process work load is big, the process is complicated, and unpack the back and pack again to the battery and have great process loss and exert an influence to the battery performance to can't carry out battery reutilization well.
SUMMERY OF THE UTILITY MODEL
One purpose of this application is to solve and need unpack, detect, recombine then utilize the work load that brings big and the process is complicated to retired battery package among the prior art, and pack once more and have technical problem such as great process loss.
A further object of the present application is to enable free selection and combination of energy storage units according to the needs of the scene.
Particularly, the utility model provides an energy storage cabinet system, including a plurality of energy storage unit, a plurality of energy storage unit electricity is connected to outside alternating current electric wire netting after the mutual parallel connection, just a plurality of energy storage unit all with external control system communication connection, every the energy storage unit includes:
the retired battery pack system comprises a retired battery pack and a battery management system for detecting the state of the retired battery pack;
and two ends of the energy storage and conversion system are respectively electrically connected with the retired battery pack and the external alternating current power grid and are used for converting alternating current provided by the external alternating current power grid into direct current to charge the retired battery pack or converting direct current of the retired battery pack into alternating current to provide electric energy to the outside.
Optionally, the energy storage converter system in each of the energy storage units is electrically connected to the external ac power grid and the battery management system in the same energy storage unit through a high-voltage line.
Optionally, the energy storage converter system in each of the energy storage units is electrically connected to the battery management system in the same energy storage unit through a low voltage line, and is configured to provide low voltage to the battery management system.
Optionally, the energy storage converter system in each of the energy storage units is configured to be in communication connection with the external control system and the battery management system in the same energy storage unit.
Optionally, the energy storage cabinet system further includes a first energy management system, and the first energy management system is in communication connection with the external control system and is in communication connection with the plurality of energy storage units, respectively.
Optionally, the battery management system and the energy storage converter system in all the energy storage units are in communication connection with the first energy management system.
Optionally, each of the energy storage units further comprises:
the second energy management system is respectively in communication connection with the external control system, the battery management system of the same energy storage unit and the energy storage converter system and is used for managing the battery management system and the energy storage converter system in the same energy storage unit;
the plurality of energy storage units are respectively in communication connection with the external control system through the respective second energy management systems.
Optionally, the second energy management system in each energy storage unit of the plurality of energy storage units is electrically connected to the battery management system in the same energy storage unit through a low voltage line, and is configured to provide low voltage electricity to the battery management system.
Particularly, the utility model also provides an energy storage system, include as aforementioned energy storage cabinet system.
Optionally, the energy storage system further includes a monitoring unit, and the monitoring unit is connected to the energy storage cabinet system and is configured to enable and disable the energy storage cabinet system to perform charging or discharging.
According to the utility model discloses a scheme can not do any processing to decommissioning battery package system, can directly use, and interface etc. are unchangeable completely, through the decommissioning battery package system of the compatible vehicle of external system, need not from this to decommissioning battery package unpack, detect, recombination then utilize to the technical problem that work load is big among the prior art, the process is complicated and there is great process loss etc. has been solved.
Furthermore, each retired battery pack has an independent communication (generally, a CAN bus), and a communication protocol is developed according to the requirements of a Battery Management System (BMS), so that battery pack software is guaranteed not to be changed.
Further, an external system communicating with the retired battery pack system may be completed by using an existing energy storage converter system (PCS), or may be completed by using a separately developed system, where the separately developed system may be centralized (all energy storage units share one first energy management system), or may be in a modularized distributed design (one energy storage unit corresponds to one second energy management system). After the PCS or a separately developed system is adapted, the combination can be freely configured, so that the PCS or the separately developed system can be freely selected and combined according to scenes, and the system is flexible.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 shows a schematic block diagram of an energy storage cabinet system according to a first embodiment of the present invention;
fig. 2 shows a schematic block diagram of an energy storage cabinet system according to a second embodiment of the present invention;
fig. 3 shows a schematic structural diagram of an energy storage cabinet system according to a third embodiment of the present invention.
Detailed Description
The embodiment of the utility model provides an energy storage cabinet system, including a plurality of energy storage unit, the electricity is connected to outside alternating current electric wire netting behind the mutual parallel connection of a plurality of energy storage unit, and a plurality of energy storage unit all with external control system communication connection, every energy storage unit includes retired battery package system and energy storage conversion system. The decommissioned battery pack system comprises a decommissioned battery pack and a battery management system for detecting the state of the decommissioned battery pack. The two ends of the energy storage and conversion system are respectively electrically connected with the retired battery pack and an external alternating current power grid and are used for converting alternating current provided by the external alternating current power grid into direct current to charge the retired battery pack or converting the direct current of the retired battery pack into alternating current to provide electric energy to the outside.
According to the utility model discloses a scheme can not do any processing to decommissioning battery package system, can directly use, and interface etc. are unchangeable completely, through the decommissioning battery package system of the compatible vehicle of external system, need not from this to decommissioning battery package unpack, detect, recombination then utilize to the technical problem that work load is big among the prior art, the process is complicated and there is great process loss etc. has been solved.
The following is a detailed description of specific examples:
the first embodiment is as follows:
fig. 1 shows a schematic structural diagram of an energy storage cabinet system according to a first embodiment of the present invention. As shown in fig. 1, the energy storage converter system in each of the energy storage units is electrically connected to an external ac power grid and a battery management system in the same energy storage unit through a high-voltage line. The energy storage converter system in each energy storage unit in the plurality of energy storage units is electrically connected with the battery management system in the same energy storage unit through a low-voltage line and used for providing low-voltage electricity for the battery management system. The energy storage converter system in each energy storage unit in the plurality of energy storage units is configured to be in communication connection with an external control system and a battery management system in the same energy storage unit.
That is to say, the energy storage converter system PCS has at least two communication buses (usually CAN bus, the present invention is explained by CAN communication). One path of CAN bus of PCS is communicated with a battery management system BMS of a retired battery pack system, and the other path of CAN bus is directly communicated with an external control system. The PCS has the function of realizing bidirectional conversion between the electric energy of an external alternating current power grid and the electric energy of a retired battery pack. The energy storage unit is formed by a retired battery pack system, an energy storage converter system, a high-voltage line and a low-voltage line which are connected with the high-voltage line and the low-voltage line, a communication line between the energy storage converter system and an external alternating current power grid, a communication line between the PCS and the BMS and a communication line between the PCS and an external control system, and the energy storage unit is the minimum energy storage unit. Each energy storage unit can be connected in parallel at an alternating current input/output side (PCS is a bidirectional AC/DC power conversion module), and communication between each PCS and an external control system can also be connected to the same bus. The functions, communication protocols, control programs and the like of the PCS in different energy storage units can be completely the same, and the communication addresses of the PCS in different energy storage units are subjected to grouping and offsetting in the modes of dial switches and the like, namely, the whole energy storage cabinet system only needs to develop one set of PCS matched with the retired battery pack system, the PCS is connected in parallel according to different application scenes to realize capacity expansion, and the combination of each set of PCS and the retired battery pack system is a small energy storage unit.
Correspondingly, the utility model also provides an energy storage system, including aforementioned energy storage cabinet system. The energy storage system further comprises a monitoring unit, wherein the monitoring unit is connected with the energy storage cabinet system and used for enabling and disabling the energy storage cabinet system to charge or discharge.
The utility model discloses well energy storage system's theory of operation as follows: the PCS firstly carries out self-checking, supplies low-voltage power to the battery pack BMS after the self-checking passes so as to enable the BMS to work, then uses the specific communication protocol of the vehicle and the BMS communication to enable the BMS to work just like on the vehicle, monitors the state of a decommissioned battery pack, enters a ready standby state if all units in the whole energy storage cabinet system have no serious faults, sends the state of the energy storage cabinet system or the energy storage units to the monitoring unit outside the energy storage cabinet system in real time, and waits for the instruction of the monitoring unit. And the external monitoring unit enables and prohibits the energy storage cabinet system from charging or reversely discharging according to the requirement, and if the PCS receives a discharging or charging instruction, the BMS closes a positive contactor and a negative contactor of the battery pack through a specific control time sequence of the whole vehicle, and then converts the electric energy of an external alternating current power grid into direct current electricity to be charged into (charged into) the retired battery pack or converts the direct current electric energy of the retired battery pack into alternating current. The energy storage cabinet system can be used in parallel after converting direct current of the retired battery pack into alternating current, and the alternating current electric energy can be merged into a power grid or can be used independently.
The utility model discloses the scheme, every decommissioning group battery have independent communication all the way (generally be the CAN bus), and communication protocol develops according to battery management system (BMS)'s requirement, guarantees that battery package software does not do any change yet.
Example two:
as shown in fig. 2, to better achieve modularity and to enable the use of standard PCS systems (i.e., without modification of custom PCS software programs), a first energy management system EMS1 for managing PCS and BMS was additionally developed. The first energy management system is in communication connection with the external control system and is in communication connection with the energy storage units respectively. And the battery management systems and the energy storage conversion systems in all the energy storage units are in communication connection with the first energy management system. The energy storage converter system in each energy storage unit in the plurality of energy storage units is electrically connected with an external alternating current power grid and a battery management system in the same energy storage unit through a high-voltage line. The energy storage converter system in each energy storage unit in the plurality of energy storage units is electrically connected with the battery management system in the same energy storage unit through a low-voltage line and used for providing low-voltage electricity for the battery management system.
That is, the EMS1 has at least three communications, respectively with the PCS, BMS and external control system. EMS1 uses the communication protocol specific to the vehicle and the PCS to communicate with the battery BMS, so that the PCS and the retired battery pack system can use the existing mature product without any change. The energy storage unit is formed by a retired battery pack system, an energy storage converter system, a high-voltage line and a low-voltage line which are connected with the two systems, a high-voltage line of the energy storage converter system and an external alternating current power grid, a communication line between the PCS and an external control system, and a communication line between the BMS and the external control system, and is the minimum energy storage unit. Each energy storage unit may be connected in parallel on the alternating current input/output (PCS is a bidirectional AC/DC power conversion module) side. The control of all energy storage units is centralized in an EMS1 for centralized design, each BMS is independently communicated with an EMS1 (independent network), and the communication protocol and the flow are the same (vehicle-specific communication protocol); the EMS1 needs to control all PCS simultaneously and finally communicates with the external control system via the EMS 1.
Correspondingly, the utility model also provides an energy storage system, including aforementioned energy storage cabinet system. The energy storage system further comprises a monitoring unit, wherein the monitoring unit is connected with the energy storage cabinet system and used for enabling and disabling the energy storage cabinet system to charge or discharge.
The embodiment of the utility model provides an energy storage system's theory of operation as follows: EMS1 carries out self-checking at first, supplies low voltage power for battery package BMS after self-checking passes and makes BMS work, then uses vehicle specific communication protocol and BMS communication, makes BMS just as if work on the vehicle to the state of monitoring retired group battery and PCS, if all units do not have serious trouble in whole energy storage cabinet system, enters ready standby state, and sends the state of energy storage cabinet system or energy storage unit to the outside monitoring unit of energy storage cabinet system in real time, waits for the instruction of this monitoring unit. An external monitoring unit enables and prohibits the energy storage cabinet system to carry out charging or reverse discharging according to needs, if the EMS1 receives a discharging or charging instruction, the BMS closes a positive contactor and a negative contactor of a battery pack through a specific control time sequence of the whole vehicle, and then the PCS is controlled to convert the electric energy of an external alternating current power grid into direct current electricity to be charged into a decommissioned battery pack (charging) or convert the direct current electric energy of the decommissioned battery pack into alternating current. The energy storage cabinet system can be used in parallel after converting direct current of the retired battery pack into alternating current, and the alternating current electric energy can be merged into a power grid or can be used independently.
Compared with the first embodiment, the second embodiment does not need to modify the software program of the energy storage converter system, and the existing energy storage converter system does not need to be modified, and only needs to additionally develop a set of EMS1 for performing centralized management on all PCS and BMS.
The utility model discloses the scheme, every decommissioning group battery have independent communication all the way (generally be the CAN bus), and communication protocol develops according to battery management system (BMS)'s requirement, guarantees that battery package software does not do any change yet.
Example three:
as shown in fig. 3, to better achieve modularity and to enable the use of standard PCS systems (i.e., without modification of custom PCS software programs), a second energy management system EMS2 for managing PCS and BMS was additionally developed. The second energy management system is respectively in communication connection with the external control system, the battery management system of the same energy storage unit and the energy storage conversion system, and is used for managing the battery management system and the energy storage conversion system in the same energy storage unit. The plurality of energy storage units are respectively in communication connection with an external control system through respective second energy management systems. The second energy management system in each energy storage unit in the plurality of energy storage units is electrically connected with the battery management system in the same energy storage unit through a low-voltage line and used for providing low-voltage electricity for the battery management system.
That is, the EMS2 has at least three communications, respectively with the PCS, BMS and external control system. EMS2 uses the communication protocol specific to the vehicle and the PCS to communicate with the battery BMS, so that the PCS and the retired battery pack system can use the existing mature product without any change. An energy storage unit is formed by a decommissioned battery pack system, an energy storage converter system, an EMS2, a high-voltage line for connecting the decommissioned battery pack system and a PCS, a high-voltage line for connecting the energy storage converter system and an external alternating current power grid, a low-voltage line for connecting an EMS2 and the decommissioned battery pack system, a communication line between the EMS2 and an external control system, a communication line between the EMS2 and the PCS, and a communication line between the BMS and the EMS2, wherein the energy storage unit is the minimum energy storage unit. Each energy storage unit may be connected in parallel on the alternating current input/output (PCS is a bidirectional AC/DC power conversion module) side.
The communication lines between each EMS2 and the external control system can be connected to the same bus, the functions, communication protocols, control programs and the like of the EMS2 can be completely the same, the communication addresses of the EMS2 can be grouped and shifted in a mode of dial switches and the like, and the expansion can be realized by parallel connection according to different application scenes.
The embodiment of the utility model provides an energy storage system's theory of operation as follows: EMS2 carries out self-checking at first, supplies low voltage power for battery package BMS after self-checking passes and makes BMS work, then uses vehicle specific communication protocol and BMS communication, makes BMS just as if work on the vehicle to the state of monitoring retired group battery and PCS, if all units do not have serious trouble in whole energy storage cabinet system, enters ready standby state, and sends the state of energy storage cabinet system or energy storage unit to the outside monitoring unit of energy storage cabinet system in real time, waits for the instruction of this monitoring unit. An external monitoring unit enables and prohibits the energy storage cabinet system to carry out charging or reverse discharging according to needs, if the EMS2 receives a discharging or charging instruction, the BMS closes a positive contactor and a negative contactor of a battery pack through a specific control time sequence of the whole vehicle, and then the PCS is controlled to convert the electric energy of an external alternating current power grid into direct current electricity to be charged into a decommissioned battery pack (charging) or convert the direct current electric energy of the decommissioned battery pack into alternating current. The energy storage cabinet system can be used in parallel after converting direct current of the retired battery pack into alternating current, and the alternating current electric energy can be merged into a power grid or can be used independently.
Compared with the first embodiment, the third embodiment does not need to modify the software program of the energy storage converter system, and the existing energy storage converter system can be modified without any modification, and only needs to additionally develop a set of EMS2 for managing the PCS and the BMS.
According to the present invention, the external system communicating with the retired battery pack system can be completed by using the existing energy storage converter system (PCS), or by using a separate development system, and the separate development system can be centralized (all energy storage units share a first energy management system), or can be modularized distributed (one energy storage unit corresponds to a second energy management system). After the PCS or a separately developed system is adapted, the combination can be freely configured, so that the PCS or the separately developed system can be freely selected and combined according to scenes, and the system is flexible.
Thus far, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications can be made, consistent with the general principles of the invention, as may be directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. The energy storage cabinet system is characterized by comprising a plurality of energy storage units, wherein the plurality of energy storage units are electrically connected to an external alternating current power grid after being connected in parallel, and are in communication connection with an external control system, and each energy storage unit comprises:
the retired battery pack system comprises a retired battery pack and a battery management system for detecting the state of the retired battery pack;
and two ends of the energy storage and conversion system are respectively electrically connected with the retired battery pack and the external alternating current power grid and are used for converting alternating current provided by the external alternating current power grid into direct current to charge the retired battery pack or converting direct current of the retired battery pack into alternating current to provide electric energy to the outside.
2. The energy storage cabinet system according to claim 1, wherein the energy storage converter system in each of the energy storage units is electrically connected to the external ac power grid and the battery management system in the same energy storage unit through high voltage lines.
3. The energy storage cabinet system according to claim 2, wherein the energy storage converter system in each of the energy storage units is electrically connected to the battery management system in the same energy storage unit through a low voltage line, so as to provide low voltage electricity to the battery management system.
4. The energy storage cabinet system according to claim 3, wherein the energy storage converter system in each of the energy storage units is configured to be communicatively connected to the external control system and the battery management system in the same energy storage unit.
5. The energy storage cabinet system according to claim 3, further comprising a first energy management system, wherein the first energy management system is in communication with the external control system and is in communication with the plurality of energy storage units, respectively.
6. The energy storage cabinet system according to claim 5, wherein the battery management system and the energy storage converter system in all the energy storage units are communicatively connected to the first energy management system.
7. The energy storage cabinet system according to claim 2, wherein each of the energy storage units further comprises:
the second energy management system is respectively in communication connection with the external control system, the battery management system of the same energy storage unit and the energy storage converter system and is used for managing the battery management system and the energy storage converter system in the same energy storage unit;
the plurality of energy storage units are respectively in communication connection with the external control system through the respective second energy management systems.
8. The energy storage cabinet system according to claim 7, wherein the second energy management system in each of the energy storage units is electrically connected to the battery management system in the same energy storage unit through a low voltage line for providing a low voltage to the battery management system.
9. An energy storage system, characterized by comprising an energy storage cabinet system according to any one of claims 1-8.
10. The energy storage system of claim 9, further comprising a monitoring unit connected to the energy storage cabinet system for enabling and disabling charging or discharging of the energy storage cabinet system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120898924.3U CN215071656U (en) | 2021-04-28 | 2021-04-28 | Energy storage cabinet system and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120898924.3U CN215071656U (en) | 2021-04-28 | 2021-04-28 | Energy storage cabinet system and energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215071656U true CN215071656U (en) | 2021-12-07 |
Family
ID=79110625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120898924.3U Active CN215071656U (en) | 2021-04-28 | 2021-04-28 | Energy storage cabinet system and energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215071656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117559541A (en) * | 2024-01-11 | 2024-02-13 | 深圳市杰成镍钴新能源科技有限公司 | Whole package utilization system of retired power battery package |
-
2021
- 2021-04-28 CN CN202120898924.3U patent/CN215071656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117559541A (en) * | 2024-01-11 | 2024-02-13 | 深圳市杰成镍钴新能源科技有限公司 | Whole package utilization system of retired power battery package |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101931252A (en) | Charging system for electric automobile | |
| CN104216499A (en) | Equipment cabinet and power source control method thereof | |
| CN107769188B (en) | Parallel operation system of switching power supply | |
| CN110011408B (en) | Mobile emergency power supply system and working method thereof | |
| CN110901471B (en) | Rapidly-extensible electric automobile flexible direct-current charging system | |
| CN112600264B (en) | Control method and system of parallel battery packs, electronic equipment and vehicle | |
| CN106814326B (en) | Battery pack charging and discharging test system | |
| CN105762831A (en) | Energy network system | |
| CN102983614A (en) | Two-way converter station charge-discharge system | |
| CN215071656U (en) | Energy storage cabinet system and energy storage system | |
| CN210007468U (en) | kinds of mobile emergency power supply device | |
| EP4112362A1 (en) | Terminal for charging electric vehicles with electrochemical energy storage | |
| CN210212079U (en) | Vehicle-mounted charging system and vehicle-mounted charger | |
| CN202888913U (en) | Energy storage control device of distributed new energy power system | |
| CN216774297U (en) | High-voltage box of medium-high voltage direct-hanging energy storage system | |
| CN110943476A (en) | Multi-stage UPS parallel distributed control system and wiring circuit thereof | |
| CN212162825U (en) | Distributed energy storage system-based multi-parameter dynamic adjustment flexible charging and discharging control system | |
| CN114938066A (en) | Data center power supply system and method | |
| CN114362159A (en) | High-voltage box of medium-high voltage direct-hanging energy storage system | |
| CN207967969U (en) | A kind of DC charging system | |
| CN208797850U (en) | A kind of energy-storage system of reversible transducer composition | |
| WO2020191682A1 (en) | Vehicle-mounted battery charger and manufacturing method therefor, vehicle-mounted battery charger system | |
| CN210608606U (en) | Cascade battery system | |
| CN202663156U (en) | Centralized charging station | |
| CN218678461U (en) | Energy storage power supply system and electric equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |