CN118231901A - Energy storage device and energy storage system - Google Patents
Energy storage device and energy storage system Download PDFInfo
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- CN118231901A CN118231901A CN202310957876.4A CN202310957876A CN118231901A CN 118231901 A CN118231901 A CN 118231901A CN 202310957876 A CN202310957876 A CN 202310957876A CN 118231901 A CN118231901 A CN 118231901A
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- management system
- battery management
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- energy storage
- battery
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application discloses an energy storage device and an energy storage system. The energy storage device comprises an electric cabin and a battery cabin, wherein the electric cabin is provided with a first end and a second end which are oppositely arranged along a first direction; the battery compartment is connected with the second end of the electric compartment; the electric cabin is provided with an electric cabin and an opening part communicated with the electric cabin, the opening part is arranged on the end face of the first end of the electric cabin, the opening part is provided with the electric cabin, and the electric cabin is provided with an electric control device.
Description
Technical Field
The application relates to the technical field of heat dissipation equipment, in particular to an energy storage device and an energy storage system.
Background
In recent years, the domestic energy storage market demand is continuously increased, the energy storage industry scale is rapidly expanded, and the effect of the energy storage equipment in the energy application scene is more and more prominent. The energy storage equipment is an essential infrastructure for development of micro-grids, island grids, distributed power generation systems and new energy automobiles. Among the energy storage devices, the energy storage container is favored in a plurality of energy storage devices because of the characteristics of convenient installation, small occupied area, flexible movement and the like.
In prior art energy storage containers, two battery compartments are typically provided, and the electrical compartment is sandwiched between the two battery compartments. Thus, the two surfaces of the electric cabin are in contact with the battery cabin, and when the battery arranged in the battery cabin is out of control and needs to be cooled by water, the electric cabin has the risk of water inflow in two directions.
In summary, the layout of the energy storage container in the prior art has an unreasonable place. In view of this, there is a need for new solutions to improve the layout of energy storage containers.
Disclosure of Invention
An object of the present application is to provide a new technical solution for an energy storage device and an energy storage system.
According to a first aspect of the present application there is provided an energy storage device comprising:
An electrical compartment having a first end and a second end disposed opposite in a first direction;
The battery compartment is connected with the second end of the electric compartment;
The electric cabin is provided with an electric cabin and an opening part communicated with the electric cabin, the opening part is arranged on the end face of the first end of the electric cabin, the opening part is provided with the electric cabin, and the electric cabin is provided with an electric control device.
Optionally, the electronic control device includes:
A first battery management system group;
The first battery management system group and the second battery management system group are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; and
The electric connecting piece is arranged between the first battery management system group and the second battery management system group, and is electrically connected with the first battery management system group and the second battery management system group.
Optionally, the first battery management system group and the second battery management system group are symmetrically arranged.
Optionally, the first battery management system group includes:
and the electric connection interface of each battery management system is electrically connected with one battery module arranged in the battery compartment.
Optionally, the electric connection interface of the battery management system is electrically connected with the battery module through a power wire harness, and the electric connection interface is arranged on the end face of the battery management system, which is close to one side of the battery compartment.
Optionally, the charge-discharge multiplying power of the battery module arranged in the battery compartment is a first multiplying power;
the energy storage device is provided with a first group of external wiring ports and a second group of external wiring ports; wherein,
The positive poles of the battery management systems in the first battery management system group are electrically connected with the positive poles of the first group of external wiring ports through electric connectors, and the negative poles of the battery management systems in the first battery management system group are electrically connected with the negative poles of the first group of external wiring ports through the electric connectors;
The positive poles of the battery management systems in the second battery management system group are electrically connected with the positive poles of the second group of external wiring ports through the electric connecting pieces, and the negative poles of the battery management systems in the second battery management system group are electrically connected with the negative poles of the second group of external wiring ports through the electric connecting pieces.
Optionally, the electrical connection comprises a first busbar set and a second busbar set;
The first bus bar group is arranged close to the first battery management system group, and a battery management system in the first battery management system group is electrically connected with the first group of external wiring ports through the first bus bar group;
the second busbar group is arranged close to the second battery management system group, and the battery management system in the second battery management system group is electrically connected with the second group of external wiring ports through the second busbar group.
Optionally, the first busbar group includes:
a first sub-bus, through which a positive terminal of a battery management system in the first battery management system group is electrically connected with a positive port of the first group of external wiring ports; and
The second sub-bus is arranged in an insulating way with the first sub-bus, and a negative terminal of a battery management system in the first battery management system group is electrically connected with a negative port of the first group of external wiring ports through the second sub-bus.
Optionally, the first sub-bus and the second sub-bus are arranged along a first direction and are connected through a first insulating column.
Optionally, the charge-discharge multiplying power of the battery arranged in the battery compartment is a second multiplying power, the second multiplying power is smaller than the first multiplying power, and the energy storage device is provided with a third group of external wiring ports;
The positive terminal of the battery management system in the first battery management system group and the second battery management system group is electrically connected with the positive port of the third group of external wiring ports through an electric connecting piece;
The negative terminal of the battery management system in the first battery management system group and the second battery management system group is electrically connected with the negative port of the third group of external wiring ports through the electric connecting piece.
Optionally, the electrical connector includes a third busbar set and a fourth busbar set, the third busbar set being disposed insulated from the fourth busbar set;
the positive electrode terminal of the battery management system in the first battery management system group and the second battery management system group is electrically connected with the positive electrode port of the third group of external wiring ports through the third busbar group;
And the negative electrode terminals of the battery management systems in the first battery management system group and the second battery management system group are electrically connected with the negative electrode port of the third group of external wiring ports through the fourth bus bar group.
Optionally, at least one of the first set of external connection ports and the second set of external connection ports includes a direct current cable, the electrical connector is connected to an external energy storage converter through the direct current cable, a wire inlet hole is formed in the bottom of the electrical cabin, a part of the direct current cable passes through the wire inlet hole and is arranged in the electrical cabin, and the direct current cable extends in a third direction in the electrical cabin; the first direction and the third direction are perpendicular to each other.
Optionally, the electric compartment is provided with a shielding plate, which is provided at a surface of at least part of the electric control device facing the opening.
Optionally, in the first direction, a ratio of a size of the battery compartment to a size of the electrical compartment is A1, wherein 10:1.ltoreq.a1.ltoreq.20:1.
Optionally, the energy storage device further comprises a temperature regulating cabin, the temperature regulating cabin is connected with one end, away from the electric cabin, of the battery cabin, and the electric cabin, the battery cabin and the temperature regulating cabin are sequentially arranged along a first direction.
According to a second aspect of the present application there is provided an energy storage system comprising a plurality of energy storage devices as described in the first aspect, a plurality of said energy storage devices being electrically connected.
The technical scheme adopted by the application can achieve the following beneficial effects:
In the energy storage device provided by the embodiment of the application, only one surface of the electric cabin is in contact with the battery cabin, so that when the battery arranged in the battery cabin is in thermal runaway and water is required to be cooled by the battery cabin, the electric cabin only has the possibility of water inflow in one direction, and the risk of water inflow of the electric cabin is reduced.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic diagram of the overall structure of an energy storage device according to one embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of an energy storage device according to an embodiment of the present application;
FIG. 3 is a schematic illustration of the structure of an electrical compartment in an energy storage device according to one embodiment of the application;
FIG. 4 is a schematic diagram of an electrical compartment in an energy storage device according to one embodiment of the application;
FIG. 5 is a schematic diagram of a first busbar set and a second busbar set in an energy storage device according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a second configuration of a first busbar set and a second busbar set in an energy storage device according to an embodiment of the present application;
FIG. 7 is a schematic diagram III of the structure of an electric compartment in an energy storage device according to one embodiment of the application;
FIG. 8 is a schematic diagram of the electrical connection principle in an energy storage device according to one embodiment of the present application;
FIG. 9 is a schematic diagram II of the electrical connection principle in an energy storage device according to an embodiment of the present application;
Fig. 10 is a schematic diagram of the electrical connection principle in an energy storage device according to an embodiment of the present application.
Reference numerals illustrate:
1. An electric compartment; 100. an electrical hatch; 101. a protection plate; 102. a cable support; 11. a battery management system; 12. a first bus bar group; 121. a first sub-bus; 122. a second sub-bus; 120. a first insulating column; 13. a second bus bar group; 131. a third sub-bus; 132. a fourth sub-bus; 130. a second insulating column; 14. a third bus bar group; 15. a fourth bus bar group; 16. a power distribution cabinet; 17. a lightning protection unit; 18. a fire-fighting main machine; 19. fire control gas steel cylinder; 2. a battery compartment; 3. a temperature regulating cabin; 01. a direct current cable.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Referring to fig. 1-7, an energy storage device is provided according to one embodiment of the present application. The energy storage device comprises an electric cabin 1, a battery cabin 2 and a temperature regulating cabin 3, wherein the electric cabin 1 is provided with a first end and a second end which are oppositely arranged along a first direction; the battery compartment 2 is connected with the second end of the electric compartment 1;
The electric cabin 1 has an electric cabin and an opening communicating with the electric cabin, the opening is provided on an end face of a first end of the electric cabin 1, the opening is provided with an electric cabin door 100, and the electric cabin is provided with an electric control device.
Optionally, the energy storage device further comprises a temperature regulating cabin 3, the temperature regulating cabin 3 is connected with one end, away from the electric cabin 1, of the battery cabin 2, and the electric cabin 1, the battery cabin 2 and the temperature regulating cabin 3 are sequentially arranged along a first direction. Alternatively, the energy storage device may be an energy storage container.
In the prior art, along the length direction of an energy storage container, one battery compartment, an electric compartment and the other battery compartment are sequentially arranged, and the cabin door and the maintenance surface of the electric compartment are arranged on the length direction of the energy storage container. In such a structural arrangement, if the space of the battery compartment is to be increased in a limited container to thereby increase the battery capacity, it is necessary to arrange the devices in the electric compartment as much as possible in the width direction of the container, so that when the compartment door is opened to perform maintenance on the devices in the electric compartment, many devices are arranged at a relatively long rear from the compartment door, and there are many inconveniences in maintenance operation. If the device is arranged in front of the cabin door as close as possible for facilitating maintenance of the device, the electric cabin occupies more space in the length direction of the container, namely, the space of the battery cabins positioned at two sides of the electric cabin is occupied, so that the whole capacity of the battery in the energy storage container is not facilitated to be improved. The devices in the electric cabin which are arranged in the way can be convenient to maintain and overhaul, but a large amount of space in the electric cabin along the width direction of the container is wasted, so that the space utilization rate of the energy storage container is not improved.
In the energy storage device provided by the embodiment of the application, the electric cabin 1, the battery cabin 2 and the temperature regulating cabin 3 are sequentially arranged along a first direction corresponding to the length direction of the energy storage device; that is, the battery compartment 2 is sandwiched between the electric compartment 1 and the temperature adjusting compartment 3, and the electric compartment 1 is located at the end position of the energy storage device.
The advantages of the above layout are: firstly, in the energy storage device, the electric cabin door 100 of the electric cabin 1 is arranged on the end face away from the first end of the battery cabin 2, so that all electric control devices arranged in the electric cabin of the electric cabin 1 are arranged close to the electric cabin door 100, more space behind the electric cabin door 100 can be reserved for the battery cabin 2 as much as possible, and the capacity of a battery arranged in the battery cabin 2 is improved.
And all the electric control devices arranged in the electric cabin are arranged close to the electric cabin door 100, and after the electric cabin door 100 is opened, all the electric control devices arranged in the electric cabin are exposed, so that the electric control devices can be conveniently debugged, maintained and replaced.
Secondly, only one surface of the electric cabin 1 is in contact with the battery cabin 2, namely, the end surface of the second end of the electric cabin 1 is in contact with the battery cabin 2, so that when the battery arranged in the battery cabin 2 is in thermal runaway, and the battery cabin 2 needs to be cooled by water, the electric cabin 1 only has the possibility of water inflow in one direction, and the risk of water inflow of the electric cabin 1 is reduced.
The direction a shown in fig. 1 is the first direction, and the direction b is the second direction.
In one embodiment, the electric control device comprises a first battery management system group, a second battery management system group and an electric connecting piece, wherein the first battery management system group and the second battery management system group are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; the electric connecting piece is arranged between the first battery management system group and the second battery management system group, and the electric connecting piece is electrically connected with the first battery management system group and the second battery management system group.
Optionally, the first battery management system group may include one battery management system, and may also include a plurality of battery management systems; the second battery management system group may include one battery management system or a plurality of battery management systems.
In addition, the electric control device also comprises a power distribution cabinet 16, a lightning protection unit 17 and a fire-fighting host 18; the first battery management system group and the second battery management system group are arranged at the upper part of the electric cabin, and the power distribution cabinet 16 is arranged below the first battery management system group; the lightning protection unit 17 and the fire-fighting host 18 are sequentially arranged below the second battery management system group; the lower right corner of the electrical compartment is also provided with a fire-fighting gas cylinder 19.
In this specific example, the electric control devices, i.e., the first battery management system group, the second battery management system group, the electric connection members, the power distribution cabinet 16, the lightning protection unit 17, and the fire-fighting main unit 18, which are disposed in the electric cabin of the electric cabin 1, are arranged in a planar manner. As described above, when the electric compartment door 100 is opened, all the electric control devices provided in the electric compartment of the electric compartment 1 are exposed, since all the electric control devices are arranged in the second direction corresponding to the width direction of the energy storage device and in the third direction corresponding to the height direction of the energy storage device.
More specifically, the first battery management system group, the electrical connection member, and the second battery management system group are arranged along the second direction; in the third direction, the power distribution cabinet 16 is located below the first battery management system group; the lightning protection unit 17 and the fire engine 18 are located in sequence below the second battery management system group.
If the electric control devices are arranged along the first direction, for example, the electric control device I and the electric control device II are arranged along the first direction, wherein the electric control device I is close to the opening part of the electric cabin 1, and the electric control device II is far away from the opening part of the electric cabin 1; when the electric compartment door 100 is opened, the electric control device i is exposed through the opening, but the electric control device ii is at least partially hidden behind the electric control device i, which makes it inconvenient to operate the electric control device ii. The layout of the electric control device in the embodiment of the application does not have the problem.
In addition, the layout of the electric control device in the embodiment of the application is beneficial to saving the space of the energy storage device along the length direction (the first direction) of the energy storage device, so that more space is beneficial to being reserved for the battery compartment 2.
Referring to fig. 1, the first direction is the a direction in fig. 1, the second direction is the b direction in fig. 1, and the third direction is the c direction in fig. 1.
In one embodiment, the first battery management system group and the second battery management system group are symmetrically arranged; for example, the first battery management system group and the second battery management system group are symmetrically arranged relative to a central axis of the second direction of the electric cabin, and the first direction and the second direction are perpendicular to each other.
In this specific example, the first battery management system group and the second battery management system group are symmetrically arranged with respect to the central axis of the second direction of the electric cabin, and are symmetrically arranged, and the arrangement form of the symmetrical arrangement is more attractive and has stronger universality.
In one embodiment, the first battery management system group includes a plurality of battery management systems 11, and an electrical connection interface of each of the battery management systems 11 is electrically connected to one of the battery modules disposed in the battery compartment 2.
In this specific example, each battery management system 11 is electrically connected to and controls one battery module; that is, the battery management system 11 corresponds to the battery modules in the battery compartment 2 one by one, so that the battery management system 11 can perform better control function on the battery modules.
In one embodiment, the electrical connection interface of the battery management system 11 is electrically connected with the battery module through a power harness, and the electrical connection interface is disposed on an end surface of the battery management system 11 near the side of the battery compartment 2.
In this specific example, the electrical connection interface of the battery management system 11 forms an electrical connection with the battery module, specifically through the power harness; and the electric connection interface of the battery management system 11 is arranged on the end face of the battery management system 11, which is close to one side of the battery compartment 2, so that the battery management system 11 and the battery module can be conveniently connected, and the power wire harness is arranged more orderly.
Alternatively, the first battery management system group and the second battery management system group include 1 to 4 Battery Management Systems (BMS) 11, respectively; referring to fig. 3, eight battery management systems 11 may be provided according to actual needs, with 4 battery management systems 11 being provided as a first battery management system group on the upper left side of the electric compartment; the other 4 battery management systems 11 are provided as a second battery management system group on the upper right side of the electric compartment.
Each battery management system 11 is mounted on an upright post arranged in the electric cabin in a bolt-fixing mode, and is mounted and replaced directly from the front of a maintenance surface of the battery management system 11, so that the operation is convenient and simple. The rear end of the battery management system 11, which is far from the opening of the electric cabin 1, is connected with a battery module provided in the battery cabin 2 through a power harness.
In one embodiment, the charge-discharge rate of the battery module set in the battery compartment 2 is a first rate; the energy storage device is provided with a first group of external wiring ports and a second group of external wiring ports; wherein,
The positive electrode of the battery management system 11 in the first battery management system group is electrically connected with the positive electrode of the first group of external wiring ports through an electric connecting piece, and the negative electrode of the battery management system 11 in the first battery management system group is electrically connected with the negative electrode of the first group of external wiring ports through the electric connecting piece; alternatively, the battery management system 11 in the first battery management system group may be one, and the positive electrode/negative electrode of the battery management system 11 is the positive electrode/negative electrode of the one battery management system 11; the number of battery management systems 11 in the first battery management system group may be plural, and the positive/negative poles of the battery management systems 11 may be the positive/negative poles of the plurality of battery management systems 11.
The positive electrode of the battery management system 11 in the second battery management system group is electrically connected with the positive electrode of the second group of external wiring ports through the electrical connection piece, and the negative electrode of the battery management system 11 in the second battery management system group is electrically connected with the negative electrode of the second group of external wiring ports through the electrical connection piece. Alternatively, the battery management system 11 in the second battery management system group may be one, and the positive electrode/negative electrode of the battery management system 11 is the positive electrode/negative electrode of the one battery management system 11; the number of battery management systems 11 in the second battery management system group may be plural, and the positive/negative poles of the battery management systems 11 may be the positive/negative poles of the plurality of battery management systems 11.
In the specific example, when the charge-discharge multiplying power of the battery module is a larger first multiplying power, two groups of external wiring ports are adopted, namely a first group of external wiring ports and a second group of external wiring ports; the first group of external wiring ports are electrically connected with the battery management system 11 in the first battery management system group through an electric connector; the second group of external connection ports is electrically connected with the battery management system 11 in the second battery management system group through an electrical connector.
Alternatively, the first magnification may be, for example, a 1C magnification.
Referring to fig. 4, in one embodiment, the electrical connection includes a first busbar set 12 and a second busbar set 13;
The first bus bar group 12 is arranged close to the first battery management system group, and the battery management system 11 in the first battery management system group is electrically connected with the first group of external wiring ports through the first bus bar group 12;
The second bus bar group 13 is disposed near the second battery management system group, and the battery management system 11 in the second battery management system group is electrically connected with the second group external connection port through the second bus bar group 13.
More specifically, referring to fig. 5 and 6, the first bus bar group 12 includes:
A first sub-bus 121, through which a positive terminal of the battery management system 11 in the first battery management system group is electrically connected to a positive port of the first group of external connection ports; and
And a second sub-bus 122, wherein the second sub-bus 122 is insulated from the first sub-bus 121, and the negative terminal of the battery management system 11 in the first battery management system group is electrically connected with the negative port of the first group of external connection ports through the second sub-bus 122.
In one embodiment, the first sub-bus 121 and the second sub-bus 122 are arranged along a first direction and are connected by a first insulating column 120.
In this specific example, the first sub-bus 121 and the second sub-bus 122 are arranged along the first direction and are connected through the first insulating column 120, so that the creepage distance and the electric gap between the first sub-bus 121 and the second sub-bus 122 can be satisfied.
Further, the second bus bar group 13 includes:
a third sub-bus bar 131, through which the positive terminal of the battery management system 11 in the second battery management system group is electrically connected to the positive port of the second group of external connection ports; and
A fourth sub-bus 132, wherein the fourth sub-bus 132 is insulated from the third sub-bus 131; the negative terminal of the battery management system 11 in the second battery management system group is electrically connected to the negative port of the second group of external connection ports through the fourth sub-bus 132.
For example, the third sub-bus bar 131 and the fourth sub-bus bar 132 are arranged along the first direction and are connected through the second insulating column 130, so that the creepage distance and the electric gap between the third sub-bus bar 131 and the fourth sub-bus bar 132 can be satisfied;
when the charge-discharge multiplying power of the battery is a larger first multiplying power, the battery management system 11 in the first battery management system group is electrically connected to the first group external wiring port by adopting the first bus bar group 12; and the battery management system 11 in the second battery management system group is electrically connected to the second group external connection port using the second bus bar group 13.
Specifically, the first sub-bus 121 in the first bus bar group 12 is responsible for electrically connecting the positive terminal of the battery management system 11 in the first battery management system group to the positive port of the first group of external connection ports, and the second sub-bus 122 in the first bus bar group 12 is responsible for electrically connecting the negative terminal of the battery management system 11 in the first battery management system group to the negative port of the first group of external connection ports.
The third sub-bus 131 in the second bus bar set 13 is responsible for electrically connecting the positive terminal of the battery management system 11 in the second battery management system set to the positive port of the second set of external wiring ports, and the fourth sub-bus 132 in the second bus bar set 13 is responsible for electrically connecting the negative terminal of the battery management system 11 in the second battery management system set to the negative port of the second set of external wiring ports.
In one embodiment, the charge-discharge multiplying power of the battery arranged in the battery compartment 2 is a second multiplying power, the second multiplying power is smaller than the first multiplying power, and the energy storage device is provided with a third group of external wiring ports;
The positive terminal of the battery management system 11 in the first battery management system group and the second battery management system group is electrically connected with the positive port of the third group of external wiring ports through an electric connecting piece;
The negative terminal of the battery management system 11 in the first battery management system group and the second battery management system group is electrically connected with the negative port of the third group of external connection ports through the electrical connection member.
For example, the second magnification may be 0.5C magnification; and under the condition that the charge-discharge multiplying power of the battery is smaller than the second multiplying power, the energy storage device is connected with one group of external wiring ports, namely a third group of external wiring ports. The battery management systems 11 in the first battery management system group and the second battery management system group are electrically connected with the third group of external wiring ports through electric connectors.
Referring to fig. 4, in one embodiment, the electrical connector includes a third busbar set 14 and a fourth busbar set 15, the third busbar set 14 being disposed insulated from the fourth busbar set 15;
The positive terminal of the battery management system 11 in the first battery management system group and the second battery management system group is electrically connected with the positive port of the third group external connection port through the third bus bar group 14;
the negative terminal of the battery management system 11 in the first battery management system group and the second battery management system group is electrically connected to the negative port of the third group external connection port through the fourth bus bar group 15.
In this specific example, when the charge-discharge rate of the battery is the second rate, only two buses need to be provided, that is, the third bus bar set 14 and the fourth bus bar set 15 are each a single bus bar, unlike the first bus bar set 12 and the second bus bar set 13, which also include sub-buses, respectively.
Wherein, the third bus bar set 14 is adopted to electrically connect the positive electrode terminals of all the battery management systems 11 in the first battery management system set and the second battery management system set to the positive electrode ports of the third set of external wiring ports; the negative terminals of all the battery management systems 11 in the first and second battery management system groups are electrically connected to the negative ports of the third group of external connection ports using the fourth bus bar group 15.
Further, the battery management system 11 is connected to an external connection port through an electrical connection and then to a PCS (energy storage converter) which converts alternating current and direct current, and then to an external power supply device through the PCS. The current passing through the Battery Management System (BMS) 11 may be different according to the user's need for the charge/discharge rate of the battery provided in the battery compartment 2 in the energy storage device.
In summary, when the charge-discharge multiplying power of the battery is the larger first multiplying power, two sets of external connection ports are adopted; when the charge-discharge multiplying power of the battery is the smaller second multiplying power, only one group of external wiring ports is needed.
For the energy storage device provided by the embodiment of the application, the battery management system 11 positioned at the left side and the battery management system 11 positioned at the right side are symmetrically arranged, the symmetrically arranged arrangement form is attractive, and the universality is strong. In addition, when the requirement of the user on the charge-discharge multiplying power of the battery arranged in the battery compartment 2 in the energy storage device is changed, only the structure of the electric connector is required to be changed in a small range, the structure and the position of other electric control devices are not required to be changed, and the compatibility is stronger.
In one embodiment, at least one of the first set of external connection ports and the second set of external connection ports comprises a direct current cable 01, the electric connector is connected to an external energy storage converter through the direct current cable 01, a wire inlet hole is formed in the bottom of the electric cabin 1, a part of the direct current cable 01 penetrates through the wire inlet hole and is arranged in the electric cabin, and the direct current cable 01 extends in a third direction in the electric cabin; the first direction and the third direction are perpendicular to each other.
More specifically, referring to fig. 8, the end of the first sub-bus 121 connects the positive cable of the first set of dc cables to the PCS, and the end of the second sub-bus 122 connects the negative cable of the first set of dc cables to the PCS. When the number of battery management systems 11 in the first battery management system group is four, the positive electrode cables and the negative electrode cables in the first group of direct current cables are four.
The end of the third sub-bus 131 is connected to the positive cable of the second set of dc cables and thus to the PCS, and the end of the fourth sub-bus 132 is connected to the negative cable of the second set of dc cables and thus to the PCS. When the number of battery management systems 11 in the second battery management system group is four, the positive electrode cables and the negative electrode cables in the second group of direct current cables are four.
Referring to fig. 4, a denotes a rear end of the battery management system 11; b represents the junction of the battery management system 11 in the first battery management system group and the first bus bar group 12; c represents the connection of the battery management system 11 in the second battery management system group with the second bus bar group 13; d represents the junction of the first busbar set 12 and the first set of dc cables 01; e denotes the junction of the second busbar set 13 and the second set of dc cables 01.
Referring to fig. 9, the end of the third bus bar group 14 is connected to the positive cable of the direct current cables and thus to the PCS, and the end of the fourth bus bar group 15 is connected to the negative cable of the direct current cables and thus to the PCS. When the number of the battery management systems 11 in the first battery management system group and the second battery management system group is four, the number of the positive electrode cables and the negative electrode cables in the direct current cables is four.
More specifically, the first sub-bus 121, the second sub-bus 122, the third sub-bus 131, and the fourth sub-bus 132; and a third bus bar group 14 and a fourth bus bar group 15, all of which include bus bars extending in the third direction and bus bars connected to the sides of the bus bars; wherein the bus bars are used for connection with the respective battery management systems 11, and the ends of the bus bars are connected to the direct current cables.
Further, the bus bars of the third bus bar group 14 and the bus bars of the fourth bus bar group 15 may be arranged at intervals in the first direction and connected by an insulating column.
Referring to fig. 10, in the case where the charge-discharge magnification of the battery is further reduced, for example, to a third magnification (0.25C), the arrangement of the electric connection member may be identical to that in the case where the charge-discharge magnification of the battery is the second magnification, that is, the electric connection member includes the third bus bar group 14 and the fourth bus bar group 15.
The difference between the third rate and the second rate is that: at a smaller third rate, the third busbar set 14 and the fourth busbar set 15 may be reduced in size, e.g., narrowed in width; and PCS with smaller model can be replaced, and the number of the direct current cables can be correspondingly reduced, for example, two positive cables and two negative cables in the direct current cables. Of course, the third busbar set 14 and the fourth busbar set 15, which are identical to those at the second magnification, may also be employed as the electrical connection at the third magnification.
In summary, when the requirement of the user on the charge-discharge multiplying power of the battery arranged in the battery compartment 2 in the energy storage device is changed, only the structure of the electric connector needs to be changed in a small range, and the structure and the position of the rest of electric control devices do not need to be changed; therefore, the battery management system 11 has stronger expansion compatibility under different charge and discharge multiplying power, and can better meet different requirements of users.
Referring to fig. 3, in one embodiment, the electrical connector is connected to the PCS through a dc cable 01 and further connected to an external power supply device, a wire inlet hole is formed in the bottom of the electrical cabinet 1, a portion of the dc cable 01 passes through the wire inlet hole and is disposed in the electrical cabinet, and the dc cable 01 is disposed in the electrical cabinet to extend along a third direction.
In this specific example, the direct current cable 01 adopts a vertical arrangement form extending along the third direction in the electric cabin of the electric cabin 1, and is not required to be bent, so that the installation is convenient and quick. In addition, the end of the dc cable 01 can be fixed to the cable holder 102 provided inside the electric cabinet by a tie, so that the weight of the dc cable 01 can be prevented from damaging the structure of the bus bar.
Referring to fig. 3, in one embodiment, the electric compartment is provided with a shielding plate 101, and the shielding plate 101 is provided at a surface of at least part of the electric control device facing the opening.
In this specific example, the protection plate 101 is arranged to protect operators and improve the operation safety; for example, the shielding plate 101 is covered in front of the bus bar and at the junction of the bus bar and the dc cable. Alternatively, the shielding plate 101 is fastened to the fixing compatible hole site of the BMS using bolts, thereby facilitating maintenance and disassembly. Further, the shielding plate 101 is a transparent PC plate.
In one embodiment, the ratio of the size of the battery compartment 2 to the size of the electrical compartment 1 is A1 in the first direction, wherein 10:1.ltoreq.a1.ltoreq.20:1.
In this specific example, the energy storage device is arranged to the battery compartment 2 as much as possible in the first direction, so that the capacity of the battery compartment can be increased to increase the capacity of the battery module.
According to another embodiment of the present application, there is provided an energy storage system comprising a plurality of energy storage devices as described above, a plurality of said energy storage devices being electrically connected therebetween.
The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.
While certain specific embodiments of the application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.
Claims (15)
1. An energy storage device, the energy storage device comprising:
An electrical compartment (1), the electrical compartment (1) having a first end and a second end disposed opposite in a first direction;
the battery compartment (2) is connected with the second end of the electric compartment (1);
The electric cabin (1) is provided with an electric cabin and an opening part communicated with the electric cabin, the opening part is arranged on the end face of the first end of the electric cabin (1), the opening part is provided with an electric cabin door (100), and the electric cabin is provided with an electric control device.
2. The energy storage device of claim 1, wherein the electronic control means comprises:
A first battery management system group;
The first battery management system group and the second battery management system group are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction; and
The electric connecting piece is arranged between the first battery management system group and the second battery management system group, and is electrically connected with the first battery management system group and the second battery management system group.
3. The energy storage device of claim 2, wherein the first battery management system set is symmetrically disposed with the second battery management system set.
4. The energy storage device of claim 2, wherein the first battery management system group comprises:
and a plurality of battery management systems (11), wherein an electric connection interface of each battery management system (11) is electrically connected with one battery module arranged in the battery compartment (2).
5. The energy storage device according to claim 4, wherein an electrical connection interface of the battery management system (11) is electrically connected with the battery module through a power harness, and the electrical connection interface is disposed on an end face of the battery management system (11) close to one side of the battery compartment (2).
6. The energy storage device according to any one of claims 1 to 5, wherein a charge-discharge rate of a battery module provided in the battery compartment (2) is a first rate;
the energy storage device is provided with a first group of external wiring ports and a second group of external wiring ports; wherein,
The positive electrode of the battery management system (11) in the first battery management system group is electrically connected with the positive electrode of the first group of external wiring ports through an electric connecting piece, and the negative electrode of the battery management system (11) in the first battery management system group is electrically connected with the negative electrode of the first group of external wiring ports through the electric connecting piece;
the positive electrode of the battery management system (11) in the second battery management system group is electrically connected with the positive electrode of the second group of external wiring ports through the electric connecting piece, and the negative electrode of the battery management system (11) in the second battery management system group is electrically connected with the negative electrode of the second group of external wiring ports through the electric connecting piece.
7. Energy storage device according to claim 6, characterized in that the electrical connection comprises a first busbar set (12) and a second busbar set (13);
The first bus bar group (12) is arranged close to the first battery management system group, and a battery management system (11) in the first battery management system group is electrically connected with the first group of external wiring ports through the first bus bar group (12);
The second busbar group (13) is arranged close to the second battery management system group, and the battery management system (11) in the second battery management system group is electrically connected with the second group of external wiring ports through the second busbar group (13).
8. The energy storage device according to claim 7, wherein the first busbar group (12) comprises:
A first sub-bus bar (121), wherein the positive terminal of the battery management system (11) in the first battery management system group is electrically connected with the positive port of the first group of external wiring ports through the first sub-bus bar (121); and
And the second sub-bus (122) is arranged in an insulating way with the first sub-bus (121), and the negative terminal of the battery management system (11) in the first battery management system group is electrically connected with the negative terminal of the first group of external wiring ports through the second sub-bus (122).
9. The energy storage device of claim 8, wherein the first sub-bus (121) and the second sub-bus (122) are arranged along a first direction and are connected by a first insulating column (120).
10. The energy storage device according to claim 6, characterized in that the charge-discharge rate of the battery provided in the battery compartment (2) is a second rate, the second rate being smaller than the first rate, the energy storage device being provided with a third set of external connection ports;
the positive terminal of the battery management system (11) in the first battery management system group and the second battery management system group is electrically connected with the positive port of the external wiring port of the third group through an electric connecting piece;
the negative terminal of the battery management system (11) in the first battery management system group and the second battery management system group is electrically connected with the negative port of the third group of external wiring ports through the electric connecting piece.
11. The energy storage device according to claim 10, characterized in that the electrical connection comprises a third busbar set (14) and a fourth busbar set (15), the third busbar set (14) being arranged insulated from the fourth busbar set (15);
The positive terminal of the battery management system (11) in the first battery management system group and the second battery management system group is electrically connected with the positive port of the third group external wiring port through the third bus bar group (14);
the negative terminal of the battery management system (11) in the first battery management system group and the second battery management system group is electrically connected with the negative port of the third group of external wiring ports through the fourth bus bar group (15).
12. Energy storage device according to claim 1, characterized in that the electrical compartment is provided with a shielding plate (101), which shielding plate (101) is arranged to cover at least part of the surface of the electrical control means facing the opening.
13. Energy storage device according to claim 1, characterized in that the ratio of the size of the battery compartment (2) to the size of the electric compartment (1) is A1 in a first direction, wherein,
10:1≤A1≤20:1。
14. The energy storage device according to claim 1, further comprising a temperature regulating cabin (3), wherein the temperature regulating cabin (3) is connected with one end of the battery compartment (2) away from the electric compartment (1), and the electric compartment (1), the battery compartment (2) and the temperature regulating cabin (3) are sequentially arranged along a first direction.
15. An energy storage system comprising a plurality of energy storage devices according to any one of claims 1-14, wherein a plurality of said energy storage devices are electrically connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310957876.4A CN118231901A (en) | 2023-07-31 | 2023-07-31 | Energy storage device and energy storage system |
| PCT/CN2024/107965 WO2025026239A1 (en) | 2023-07-31 | 2024-07-26 | Energy storage device and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310957876.4A CN118231901A (en) | 2023-07-31 | 2023-07-31 | Energy storage device and energy storage system |
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| CN118231901A true CN118231901A (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310957876.4A Pending CN118231901A (en) | 2023-07-31 | 2023-07-31 | Energy storage device and energy storage system |
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| CN (1) | CN118231901A (en) |
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