CN213212309U

CN213212309U - Energy storage system

Info

Publication number: CN213212309U
Application number: CN202022479832.XU
Authority: CN
Inventors: 尹韶文; 尹雪芹; 阳贵波
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-05-14
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses an energy storage system, energy storage system includes: the battery box comprises a plurality of battery packs, an electric control system and a box body, wherein the box body comprises a plurality of independent bins arranged along a first direction, the plurality of bins comprise a plurality of battery bins internally provided with the battery packs and an electric control bin internally provided with the electric control system, and the two sides of the electric control bins are provided with the same number of battery bins. According to the utility model discloses an energy storage system, through making the quantity of the battery compartment of automatically controlled bin first direction both sides the same, can be so that the quantity of the group battery of automatically controlled system first direction both sides the same, can be so that the connected mode of the group battery of automatically controlled system both sides and group battery and electrically controlled system's connected mode the same, can simplify energy storage system's structure. In addition, each bin is independent, so that the bins are convenient to replace, and the capacity expansion and maintenance of the energy storage system are convenient to realize.

Description

Energy storage system

Technical Field

The utility model belongs to the technical field of the battery energy storage technique and specifically relates to an energy storage system is related to.

Background

In the related technology, an energy storage system is an essential basic measure for the development of a micro-grid, an island grid, a distributed power generation system and a new energy automobile rapid charging technology. The energy storage system is applied to the power system, so that the demand side management, the peak clipping and valley filling, the load smoothing and the power grid frequency quick adjustment are realized, the operation stability and reliability of the power grid are improved, and the impact of a new energy power generation system with large instantaneous changes such as photovoltaic and wind power on the power grid is reduced.

However, in the prior art, the energy storage system needs to be designed in multiple versions when meeting various use conditions and different power and capacity requirements, which affects both the reusability of design results and the demand quick response delivery, and flexible combination and collocation of different functional modules in the system and update and upgrade of the functional modules are restricted by the system design.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an energy storage system, energy storage system simple structure.

According to the utility model discloses energy storage system, include: a plurality of battery packs; an electronic control system; the box body comprises a plurality of independent chambers arranged along a first direction, the chambers comprise a plurality of battery chambers provided with battery packs and an electric control chamber provided with an electric control system, and the battery chambers are arranged on two sides of the electric control chamber in the same quantity.

According to the utility model discloses energy storage system, through making the quantity of the battery compartment of automatically controlled bin first direction both sides the same, can be so that the quantity of the group battery of automatically controlled system first direction both sides the same, can be so that the connected mode of the group battery of automatically controlled system both sides and group battery and electrically controlled system's connected mode the same, can simplify energy storage system's structure. In addition, each bin is independent, so that the bins are convenient to replace, and the capacity expansion and maintenance of the energy storage system are convenient to realize.

In some embodiments of the present invention, each battery pack includes a plurality of battery modules, the electric control system includes a plurality of battery management systems, each battery management system is connected with a predetermined number of battery modules.

The utility model discloses an in some embodiments, every the group battery all has a plurality of arranging the setting in the second direction the battery module, it is a plurality of battery management system is divided two along the first direction and is listed as the setting, every in the group battery the quantity of battery module is with every row battery management system's quantity is the same, is located a plurality of on the same layer of battery management system one side after the battery module establishes ties with same one side and same layer battery management system connects.

In some embodiments of the present invention, the electronic control system further comprises a low voltage distribution box communication module and a high voltage module.

According to some embodiments of the invention, the energy storage system further comprises: the liquid cooling system comprises a liquid cooling unit inner unit and a liquid cooling unit outer unit, the liquid cooling unit outer unit is connected with the liquid cooling unit inner unit, the liquid cooling unit outer unit is arranged at the outer top of the box body, the chamber further comprises a liquid cooling chamber, the liquid cooling unit inner unit is arranged in the liquid cooling chamber, and the liquid cooling unit inner unit, the battery packs and the electric control system are arranged along a first direction.

In some embodiments of the present invention, each of the bins is provided with a bin gate, and each bin gate is opened along the same side.

The utility model discloses an in some embodiments, the outer machine of liquid cooling unit is equipped with a plurality of series connection's outer machine subassembly, and every outer machine subassembly all sets up every the outer top of bin.

In some embodiments of the present invention, each of the chambers has the same width in the first direction and each of the chambers has the same length in the second direction.

In some embodiments of the present invention, each of the chambers is provided with at least one shelf therein.

The utility model discloses an in some embodiments, the outer top of case body still is equipped with the decoration, the outer machine of liquid cooling unit with the decoration covers jointly the outer top wall of case body, the decoration with inject installation space between the outer top wall of case body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of an energy storage system according to an embodiment of the present invention;

fig. 2 is a perspective view of an energy storage system according to an embodiment of the present invention;

fig. 3 is a perspective view of an energy storage system according to an embodiment of the present invention, in which a battery module is hidden;

fig. 4 is a perspective view of a partial structure of an energy storage system according to an embodiment of the present invention.

Reference numerals:

the energy storage system 100 is provided with a power storage system,

the box body 1, the bin 11, the shelf 12, the bin door 13, the framework 14, the side plate 15, the hanging corner 16, the upright post 17, the heat-insulating layer 18,

a liquid cooling system 2, a liquid cooling unit internal unit 21, a liquid cooling unit external unit 22, an external unit assembly 221, a liquid cooling pipe system 23, a water outlet main pipe 231,

the battery module 3, the battery pack 31,

an electronic control system 4, a battery management system 41, a battery module 411, a low-voltage distribution box communication module 42, a high-voltage module 43,

a fire-fighting pipeline 51, a fire-fighting main pipe 511 and a decoration 6.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An energy storage system 100 according to an embodiment of the invention is described below with reference to fig. 1-4.

As shown in fig. 1 and fig. 2, the energy storage system 100 according to the embodiment of the present invention includes a box body 1, a plurality of battery packs 31, and an electric control system 4.

Specifically, the tank body 1 includes a plurality of independent compartments 11 arranged in a first direction (a left-right direction as shown in fig. 1), and the plurality of independent compartments 11 are combined to constitute the tank body 1. The volume of the tank body 1 can be increased as the number of the independent compartments 11 is increased. The plurality of compartments 11 include a plurality of battery compartments in which the battery packs 31 are provided and an electric control compartment in which the electric control system 4 is provided, and the same number of battery compartments are provided on both sides of the electric control compartment. The battery packs 31 occupy a plurality of compartments 11, the compartments 11 correspond to the battery packs 3 one by one, and each battery pack 31 is independently arranged in the corresponding compartment 11. It is thereby possible to ensure the reliability of the operation of each battery pack 31 and facilitate the mounting of the battery pack 31.

It can be understood that a plurality of battery packs 31 and the electronic control system 4 are arranged in the box body 1 and arranged in a first direction (left-right direction as shown in fig. 1), and the same number of battery packs 31 are arranged on both sides of the first direction of the electronic control system 4. The battery packs 31 on the two sides of the electronic control system 4 can be connected with the electronic control system 4 in the middle, and compared with the situation that all the battery packs 31 are located on one side of the electronic control system 4 and connected with the electronic control system 4, the connection mode of the battery packs 31 and the electronic control system 4 can be simplified. In addition, the number of the battery packs 31 on the two sides of the electric control system 4 is the same, so that the connection mode of the battery packs 31 on the two sides of the electric control system 4 and the connection mode of the battery packs 31 and the electric control system 4 are the same, and the structure of the energy storage system 100 can be simplified.

In addition, each bin 11 is independent, capacity expansion and maintenance can be achieved according to the replacement of the bins 11, when energy capacity expansion is needed by a user, parallel capacity expansion can be achieved by increasing the number of the energy storage systems 100, only certain modification is needed to be carried out on program parameters, additional voltage-sharing equipment is not needed, when a single fault occurs or maintenance is needed, operation of a unit where the module is located is only affected, immediate fault shutdown of the whole system is effectively avoided, and loss caused by accidents is reduced. And when a fault occurs or maintenance is needed, only the maintenance/maintenance module needs to be replaced, each module has certain independence, the modules of the same type can be directly replaced with each other, and meanwhile, the labor time and the cost are saved.

According to the utility model discloses energy storage system 100, through making the quantity of the battery compartment of automatically controlled bin first direction both sides the same, can make the quantity of the group battery 31 of automatically controlled system 4 first direction both sides the same, can make the connected mode of the group battery 31 of automatically controlled system 4 both sides and the connected mode of group battery 31 and electrically controlled system 4 the same, can simplify energy storage system 100's structure. In addition, each bin 11 is independent, which facilitates replacement of the bin 11, thereby facilitating expansion and maintenance of the energy storage system 100. And through the configuration of the combiner box flow boxes with different current-carrying capacity and voltage grades, different multiplying power systems can be realized.

Further, each battery pack 31 includes a plurality of battery modules 3, and the electronic control system 4 includes a plurality of battery management systems 41, and each battery management system 41 is connected to a preset number of battery modules 3. Thereby, the charge and discharge of the battery module 3 can be realized. Further, each battery pack 31 has a plurality of battery modules 3 arranged in a second direction (the up-down direction shown in fig. 1), a plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), the number of battery modules 3 in each battery pack 31 is the same as the number of battery management systems 41 in each row, and a plurality of battery modules 3 in the same layer on one side of the battery management systems 41 are connected in series to the battery management systems 41 on the same side and the same layer. Thereby facilitating connection of the battery pack 31 to the battery management system 41.

The same layer of the battery management system 41 and the same layer of the battery pack 31 may be the same layer from top to bottom, for example, the second layer of the battery module 3 and the second layer of the battery management system 41 are the same layer. The energy storage system 100 is reasonable in arrangement, and energy density of the energy storage system is greatly improved.

In other embodiments of the present invention, each battery pack 31 has a plurality of battery modules 3 arranged in the second direction (the up-down direction shown in fig. 1), the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), two battery modules 3 in the plurality of battery packs 31 on one side of the battery management system 41 are connected in series, and are connected to one of the battery management systems 41 on the same side, two battery modules 3 in the plurality of battery packs 31 on the other side of the battery management system 41 are connected in series, and are connected to one of the battery management systems 41 on the same side.

For example, each battery pack 31 has four battery modules 3 arranged in a second direction (the up-down direction shown in fig. 1), three battery modules 31 are arranged on both sides of the battery management system 41, the number of the battery management systems 41 is 12, the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), two of the plurality of battery modules 3 in the plurality of battery modules 31 on one side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, two of the plurality of battery modules 3 in the plurality of battery modules 31 on the other side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, and the plurality of battery management systems 41 are connected to one dc junction box.

In other embodiments of the present invention, each battery pack 31 has a plurality of battery modules 3 arranged in the second direction (the up-down direction shown in fig. 1), the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), each three series connection of the plurality of battery modules 3 in the plurality of battery packs 31 on one side of the battery management systems 41 is connected to one of the battery management systems 41 on the same side, each three series connection of the plurality of battery modules 3 in the plurality of battery packs 31 on the other side of the battery management systems 41 is connected to one of the battery management systems 41 on the same side.

For example, each battery pack 31 has four battery modules 3 arranged in a second direction (the up-down direction shown in fig. 1), three battery modules 31 are arranged on both sides of the battery management system 41, the number of the battery management systems 41 is 8, the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), every three battery modules 3 in the plurality of battery modules 31 on one side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, every three battery modules 3 in the plurality of battery modules 31 on the other side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, and the plurality of battery management systems 41 are connected to one dc junction box. Of course, the dc combiner box may also be connected to three inverters and then to one ac combiner box.

In other embodiments of the present invention, each battery pack 31 has a plurality of battery modules 3 arranged in the second direction (the up-down direction shown in fig. 1), the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), four of the plurality of battery modules 3 in the plurality of battery packs 31 on one side of the battery management systems 41 are connected in series, and are connected to one of the battery management systems 41 on the same side, four of the plurality of battery modules 3 in the plurality of battery packs 31 on the other side of the battery management systems 41 are connected in series, and are connected to one of the battery management systems 41 on the same side.

For example, each battery pack 31 has four battery modules 3 arranged in a second direction (the up-down direction shown in fig. 1), three battery modules 31 are arranged on both sides of the battery management system 41, the number of the battery management systems 41 is 6, the plurality of battery management systems 41 are arranged in two rows along the first direction (the left-right direction shown in fig. 1), every four battery modules 3 in the plurality of battery modules 31 on one side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, every four battery modules 3 in the plurality of battery modules 31 on the other side of the battery management system 41 are connected in series and connected to one of the battery management systems 41 on the same side, and the plurality of battery management systems 41 are connected to one dc junction box.

The utility model discloses an in some embodiments, battery module 3 is various with automatically controlled management system 41's connected mode, as above, four battery module 3, three battery module 3 or two battery module 3 can be connected to every battery management system 41, again because every bin 11's independence can be under the unchangeable circumstances of assurance electrical system 4, increase bin 11 and realize the effect of dilatation through the connected mode that changes battery module 3.

As shown in fig. 1 and 2, the electronic control system 4 further includes a low-voltage distribution box communication module 42 and a high-voltage module 43, and the low-voltage distribution box communication module 42 and the high-voltage module 43 are located on one side (lower side in fig. 1) of the battery management system 41 in the second direction. The low-voltage distribution box communication module 42 is used for communication connection of each system, the plurality of battery management systems 41 are connected in parallel and then connected to the high-voltage module 43 through copper bars, and the copper bars at the lower end of the circuit breaker in the high-voltage module 43 are connected to the outside of the system. Thereby making the arrangement of the electronic control system 4 more reasonable.

Wherein, use single module 3 as minimum battery unit, provide different direct current system voltage platforms, standardized interface through the form of establishing ties, follow-up product upgrading its external interface is unchangeable. The main functions of the battery management system 41 are management, current sharing, protection, and switching of the battery cluster. The battery management system 41 performs current and voltage sharing control on the battery clusters, and can meet the functional requirements of parallel operation of a plurality of battery packs 31. The battery management system 41 adopts standardized size, installation interface, heat dissipation interface and standardized interface, and the external interface of the subsequent product is unchanged when being upgraded.

As shown in fig. 1, the energy storage system 100 further includes a liquid cooling system 2, the liquid cooling system 2 includes a liquid cooling unit inner unit 21 and a liquid cooling unit outer unit 22, the liquid cooling unit inner unit 21 is connected to the liquid cooling unit outer unit 22, the liquid cooling unit outer unit 22 is disposed at the outer top of the box body 1, the chamber 11 further includes a liquid cooling chamber in which the liquid cooling unit inner unit 21 is disposed, and the liquid cooling unit inner unit 21, the plurality of battery packs 31 and the electric control system 4 are arranged along a first direction (left and right directions shown in fig. 1). The liquid cooling system 2 can cool the energy storage system 100, so as to ensure the working reliability of the energy storage system 100.

The box body 1 can provide structural support, safety protection, device fixation and the like for the liquid cooling unit internal unit 21, the plurality of battery packs 31, the electric control system 4 and the like. In addition, the liquid cooling unit internal unit 21 and the liquid cooling unit external unit 22 are separately provided, so that the space in the tank body 1 can be saved, and the top space of the tank body 1 can be well utilized. The liquid cooling unit inner unit 21 comprises a compressor, an evaporator, a water pump, a water tank and a liquid cooling unit power distribution and control part, the liquid cooling unit outer unit 22 mainly comprises a condenser and a fan part, and the liquid cooling unit outer unit 22 are connected to form a liquid cooling unit system together to realize heat dissipation of the battery module 3.

Alternatively, the liquid cooling unit indoor unit 21 is provided in the most peripheral chamber 11 among the plurality of chambers 11, and the chamber 11 provided with the liquid cooling unit indoor unit 21 is completely spaced apart from the adjacent chamber 11. Because liquid cooling unit indoor unit 21's dustproof and waterproof performance is better, can satisfy dustproof and waterproof requirement, can adopt lower protection level, more be favorable to liquid cooling unit indoor unit 21 heat dissipation, the protection level of other bins 11 is higher, establish liquid cooling unit indoor unit 21 and be located the most marginal bin 11 in a plurality of bins 11, can only set up the isolation in one side that is close to other bins 11, it all sets up the isolation to need not both sides, more be favorable to liquid cooling unit indoor unit 21 to dispel the heat, and can simplify the structure of case body 1, and simultaneously can reduce cost.

In addition, as shown in fig. 3, the other compartments 11 except the compartment 11 where the liquid cooling unit indoor unit 21 is located may be divided by the column 17 provided between the two compartments 11, and the compartments 11 except the compartment 11 where the liquid cooling unit indoor unit 21 is located may be communicated with each other, which is convenient for heat dissipation.

Preferably, the dustproof and waterproof protection grade of the compartment 11 provided with the liquid cooling unit indoor unit 21 is lower than that of the remaining compartments 11. Therefore, the cost can be reduced, and the working reliability of each system can be ensured. For example, the protection level of the other compartments 11 except the compartment 11 where the liquid cooling unit indoor unit 21 is located may be IP55, which may effectively protect the internal devices.

For example, in the example shown in fig. 1 and 2, 8 compartments 11 are provided in the box body 1, the liquid-cooling unit internal unit 21 is provided in the leftmost compartment 11, the electronic control system 4 is provided in the fifth compartment 11 from left to right, the electronic control system 4 includes a battery management system 41, three battery packs 31 are provided on both the left and right sides of the battery management system 41, each battery pack 31 is provided in an independent compartment 11, that is, the battery packs 31 are provided in the 2 nd to 4 th compartments 11 and the 6 th to 8 th compartments 11 from left to right, each battery pack 31 includes four battery modules 3 spaced apart in the up-down direction, the battery management systems 41 are two rows spaced apart in the left-right direction, each row includes four battery management systems 41 spaced apart in the up-down direction, the battery modules 3 located in the same layer in the horizontal direction in the three battery packs 31 located on the left side of the battery management system 41 are connected in series with the batteries 3 located in the same layer in the left-side row of the battery management The management system 41 is connected, and the battery modules 3 positioned on the same level in the horizontal direction among the three battery packs 31 positioned on the right side of the battery management system 41 are connected in series and then connected to the battery management system 41 positioned on the same level among the one-line battery management system 41 positioned on the right side.

In some embodiments of the present invention, each of the chambers 11 has the same width in the first direction (the left-right direction shown in fig. 1), and each of the chambers 11 has the same length in the second direction (the up-down direction shown in fig. 1). Therefore, the parts with uniform specifications can be shared in the manufacturing of each box body 1, the processing mode is simplified, the production efficiency is improved, and the structure of the box body 1 can be simplified. In addition, the width of each bin 11 is set to be the same, so that modules in each bin 11 in the box body 1 can be exchanged, the arrangement is carried out according to different requirements, and the application range is widened.

Optionally, as shown in fig. 4, at least one shelf 12 is provided in each bin 11. Thereby facilitating the installation and assembly of the battery pack 31, the liquid cooling unit indoor unit 21, and the electronic control system 4. For example, in the example shown in fig. 4, the chamber 11 in which the liquid cooling unit indoor units 21 are located is provided with two shelves 12 for supporting the liquid cooling unit indoor units 21, and the two shelves 12 are respectively provided on the left and right side walls of the chamber 11 and extend in the front-rear direction. The bin 11 where each battery pack 31 is located is provided with a plurality of shelves 12 spaced apart in the up-down direction for supporting a plurality of battery modules 3 in each battery pack 31, it can be understood that one of the side walls in the bin 11 where the battery modules 3 are located is provided with a plurality of shelves 12 spaced apart in the up-down direction, the number of the plurality of shelves 12 corresponds to the number of the plurality of battery modules 3 of each battery pack 31 one to one, and the other side wall of the bin 11 where the battery pack 31 is located is provided with the same number of shelves 12. A plurality of shelves 12 for supporting the battery management system 41, a plurality of shelves 12 for supporting the low-voltage distribution box communication module 42, and a plurality of shelves 12 for supporting the high-voltage module 43 are disposed in the compartment 11 where the electronic control system 4 is located, and the shelves 12 for supporting the battery management system 41 are respectively used for supporting a plurality of battery management systems 41.

As shown in fig. 4, each of the compartments 11 is provided with a door 13, each door 13 is opened outward along the same side, and the doors 13 are rotatably provided on the box body 1 to open or close the open mouth of the corresponding compartment 11. When maintaining, can open corresponding door 13, realize carrying out corresponding processing in to bin 11 through the outside, when not maintaining, can close door 13, can protect the device in every bin 11 to can improve dustproof and water-proof effects.

As shown in fig. 4, one side (as the front side shown in fig. 2) of the box body 1 is opened, thereby the liquid cooling unit indoor unit 21, the plurality of battery packs 31 and the electric control system 4 can be exposed from the opening of one side of the box body 1, when the liquid cooling unit indoor unit 21, the plurality of battery packs 31 and the electric control system 4 are assembled and maintained, corresponding assembly, maintenance and the like can be directly carried out from the opening of one side of the box body 1, maintenance and safety channels can be avoided from being arranged inside the box body 1, thereby the space in the box body 1 can be saved, the space utilization rate is improved, the depth of the box body 1 in the front-back direction is reduced, and the energy density of the energy storage system is greatly improved.

For example, in the example shown in fig. 1 and 2, the box body 1 is a rectangular box body 1, the front side of the box body 1 is open, it can be understood that the front side of the box body 1 is not shielded or covered, the liquid cooling unit indoor unit 21, the plurality of battery packs 31 and the electric control system 4 are arranged in the box body 1 and are arranged at intervals in the left-right direction, and the left side and the right side of the electric control system 4 are both provided with the same number of battery packs 31, so that the liquid cooling unit indoor unit 21, the plurality of battery packs 31 and the electric control system 4 can be exposed from the front side opening of the box body 1, and are convenient to maintain from the front side, thereby avoiding the maintenance and safety passage arranged inside the box body 1, the space in the box body 1 can be saved, and the depth of the box body 1 in the front-back direction is reduced by about 1/3 compared with the prior art.

Further, as shown in fig. 1 and 2, the same side (the front side shown in fig. 2) of each chamber 11 is open, the box body 1 includes a plurality of chambers 11 arranged in the left-right direction, since one side of the box body 1 is open, the corresponding side of each chamber 11 is also open, and the liquid cooling unit indoor unit 21, the electric control system 4, and each battery pack 31 are respectively disposed in different chambers 11. Therefore, each system can be correspondingly and independently arranged, and the working reliability of each system is ensured.

As shown in fig. 2 and 3, the liquid-cooling outdoor unit 22 is provided with a plurality of outdoor unit assemblies 221 connected in series, and each of the outdoor unit assemblies 221 is disposed on an outer top portion of each of the compartments 11. Therefore, the working efficiency of the liquid cooling system 2 can be improved, and the cooling effect on the energy storage system 100 can be improved.

As shown in fig. 3, the liquid cooling system 2 further includes a liquid cooling pipe system 23, the liquid cooling pipe system 23 includes a main water outlet pipe 231 and a main water return pipe connected to the internal unit 21 of the liquid cooling unit, the main water outlet pipe 231 and the main water return pipe are both disposed in the chamber 11 where the battery pack 31 is disposed, for dissipating heat for the battery pack 31, the battery module 3 has a liquid cooling flow passage, the liquid cooling flow passage is communicated with the main water outlet pipe 231 and the main water return pipe, a coolant such as water in the main water outlet pipe 231 can flow into the liquid cooling flow passage of the battery module 3, and flows back to the internal unit 21 of the liquid cooling unit from the main water return pipe after heat exchange with the battery module 3 is completed in the liquid cooling flow passage, so as to dissipate heat. In addition, the main water outlet pipe 231 is provided on the inner bottom wall of the tank body 1, and the main water return pipe is provided on the inner top wall of the tank body 1. Therefore, the structure arrangement in the box body 1 is more compact and reasonable, and the internal space of the box body 1 is saved.

Optionally, the battery module 3 is a liquid-cooled battery.

Further, the liquid cooling pipeline system 23 further includes a plurality of water outlet branch pipes and a plurality of water return branch pipes, the plurality of water outlet branch pipes are communicated with the water outlet main pipe 231, the plurality of water return branch pipes are communicated with the water return main pipe, and the plurality of water outlet branch pipes, the plurality of water return branch pipes and the plurality of battery packs 31 are in one-to-one correspondence and connected. A plurality of battery modules 3 arranged in the up-down direction in one battery pack 31 share one water outlet branch pipe and one water return branch pipe, and the coolant flowing out of the water outlet main pipe 231 flows to the corresponding water outlet branch pipe, then flows into the liquid cooling flow channel of the corresponding battery module 3, and then flows into the water return main pipe from the corresponding water return branch pipe. Wherein, the water outlet branch pipe and the water return branch pipe are arranged in an upright post 17 which is used for dividing the two chambers 11 in the box body 1. This can improve space utilization.

As shown in fig. 3, the energy storage system 100 further includes a fire fighting system, the fire fighting system includes a fire fighting pipeline 51, a smoke detector, a temperature detector and an alarm bell, the fire fighting pipeline 51, the smoke detector and the temperature detector are arranged in the box body 1, the smoke detector and the temperature detector are arranged on the inner top wall of the box body 1, and the alarm bell is arranged on the outer side wall of the box body 1. Fire fighting pipe 51 may be used to extinguish a fire for energy storage system 100 when it is on fire, a smoke sensor and a temperature sensor may detect the information on the fire, and an alarm bell may be used to alert the operator that energy storage system 100 has the information on the fire.

Wherein, can be equipped with the control valve on the fire control pipeline 51, smoke detector can the smoke in the collection box body 1, and the temperature detector can the temperature in the collection box body 1, and control valve, smoke detector, temperature detector and alarm bell can be connected with fire extinguishing system's control module, when smoke detector and temperature detector detected the information of catching fire, can control to open the control valve and control alarm bell and send alarm signal when having dense cigarette and temperature to exceed the limit promptly to break off internal circuit.

In addition, fire service pipeline 51 includes fire service main pipe 511 and a plurality of fire service branch pipe, and fire service main pipe 511 is connected with the outside water source, and the external interface of fire service main pipe 511 is installed on the lateral surface of case body 1, is convenient for with being connected of outside water source. The main fire fighting pipe 511 located in the box body 1 is located on the inner bottom wall of the box body 1, the plurality of branch fire fighting pipes are connected to the main fire fighting pipe 511 in a parallel connection mode, and the branch fire fighting pipes are designed in a Y shape, so that upward water spraying is facilitated to extinguish flame.

As shown in fig. 2 and 3, a decorative member 6 is further provided on the outer top of the tank body 1, the liquid cooling unit external unit 22 and the decorative member 6 together cover the outer top wall of the tank body 1, and an installation space is defined between the decorative member 6 and the outer top wall of the tank body 1. The decoration 6 can play a role of decoration, the external effect of the box body 1 is increased, and the installation space can contain the pipelines and circuits of the inner and outer connecting parts of the liquid cooling unit inner unit 21 and the liquid cooling unit outer unit 22, so that the pipelines and circuits can be conveniently stored.

As shown in fig. 4, the box body 1 comprises a framework 14 and side plates 15, the side plates 15 are of corrugated plate structures, the middle hanging corners 16 are arranged at the top of the box body 1, and the middle hanging corners 16 at the top of the box body 1 can effectively reduce the middle deformation of the box body 1 during hoisting and can also reduce the structural design weight of the box body 1. The inner side of the box body 1 is provided with a heat insulating layer 18 to reduce the heat exchange between the inside and the outside of the box body 1. Optionally, the insulation layer 18 is insulation cotton.

According to the utility model discloses energy storage system, including the case body and be located this internal a plurality of group batteries of case, electrical system, liquid cooling system and fire extinguishing system, the liquid cooling unit internal unit of a plurality of group batteries, electrical system and liquid cooling system establishes respectively in independent bin, and the width of every bin is the same, and the position of a plurality of group batteries, electrical system and liquid cooling system in the bin can be adjusted. The utility model discloses energy storage system has realized the most energy storage system solution with minimum standard basic unit, and the design cost of non-standard product that has significantly reduced can make up in a flexible way as required, takes the cordwood system equipment, and is used conveniently, and the system can make up the specification many, can satisfy different regional demands of the world.

In addition, a large amount of copies can be realized by the standardized units, the material and manufacturing cost can be reduced, the unified and standardized installation size of the basic modules can select the optimal combination according to the requirement, the idle internal space cannot occur, and the utilization rate of the system space is high. In addition, the fault module is directly and integrally replaced, so that the quick replacement can be realized, the system operation can be quickly recovered, the requirement on maintenance personnel is not high, the maintenance cost is favorably reduced, and the fault module can be pulled back to an after-sale maintenance point for maintenance and can be recycled.

Moreover, each basic unit can independently realize the technical improvement, the standardized unit enables the interface of the module of the next generation basic module to be compatible with the previous generation product, the product is updated and can be downward compatible, and after-sale maintenance is free from the trouble that spare devices are stopped production and can not be obtained.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage system, comprising:

a plurality of battery packs;

an electronic control system;

the box body comprises a plurality of independent chambers arranged along a first direction, the chambers comprise a plurality of battery chambers provided with battery packs and an electric control chamber provided with an electric control system, and the battery chambers are arranged on two sides of the electric control chamber in the same quantity.

2. The energy storage system of claim 1, wherein each battery pack comprises a plurality of battery modules, and the electronic control system comprises a plurality of battery management systems, each battery management system being connected to a predetermined number of the battery modules.

3. The energy storage system of claim 2, wherein each battery pack has a plurality of battery modules arranged in a second direction, the plurality of battery management systems are arranged in two rows along the first direction, the number of battery modules in each battery pack is the same as the number of battery management systems in each row, and a plurality of battery modules in the same layer on one side of the battery management systems are connected in series and then connected to the battery management systems on the same side and the same layer.

4. The energy storage system of claim 2, wherein the electronic control system further comprises a low voltage distribution box communication module, a high voltage module.

5. The energy storage system of claim 1, further comprising:

the liquid cooling system comprises a liquid cooling unit inner unit and a liquid cooling unit outer unit, the liquid cooling unit outer unit is connected with the liquid cooling unit inner unit, the liquid cooling unit outer unit is arranged at the outer top of the box body, the chamber further comprises a liquid cooling chamber, the liquid cooling unit inner unit is arranged in the liquid cooling chamber, and the liquid cooling unit inner unit, the battery packs and the electric control system are arranged along a first direction.

6. The energy storage system of claim 5, wherein each of the plenums has a door, each door opening along the same side.

7. The energy storage system of claim 5, wherein the liquid-cooled outdoor unit comprises a plurality of serially connected outdoor unit assemblies, each outdoor unit assembly being disposed at an outer top of each of the compartments.

8. The energy storage system of claim 5, wherein each of the plenums has the same width in the first direction and each of the plenums has the same length in the second direction.

9. The energy storage system of claim 5, wherein at least one shelf is disposed within each of the compartments.

10. The energy storage system of claim 5, wherein the outer top of the tank body is further provided with a decorative member, the liquid-cooled outdoor unit and the decorative member jointly cover the outer top wall of the tank body, and a mounting space is defined between the decorative member and the outer top wall of the tank body.