Battery system and energy storage system

Abstract

The utility model relates to a battery system and an energy storage system, and the system comprises a pedestal, the surface of the pedestal is provided with a plurality of first connectors which are arranged at intervals, and the plurality of first connectors are electrically connected; the plurality of battery modules are arranged on the surface of the base, each battery module comprises a plurality of battery box assemblies which are stacked, a first end of each battery box assembly is provided with a second connector, a second end of each battery box assembly is provided with a third connector, and the first end and the second end are oppositely arranged along the stacking direction of the battery box assemblies; in any two adjacent battery box assemblies of the same battery module, the third connector of one battery box assembly is inserted into the second connector of the other battery box assembly; and the plurality of first connectors are inserted into the second connectors of the head-end battery box assemblies of the plurality of battery modules in a one-to-one correspondence manner, so that the plurality of battery modules are electrically connected. The mounting process can be effectively simplified, the stacking height of the battery system is moderate while the occupied area of the battery system is reduced, and the attractiveness of the battery system is ensured.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery system and an energy storage system. Background Art

[0002] With the application and development of energy storage systems, household energy storage systems have gradually expanded their application scope due to their advantages such as being able to be used on and off the grid, accessing the grid when the surplus power is connected, and being self-sufficient at night and on rainy days. However, existing household energy storage systems have installation difficulties and inconveniences when combining multiple battery modules. Utility Model Content

[0003] Based on this, it is necessary to provide a battery system and an energy storage system to address the problems in the prior art that household energy storage systems have installation difficulties and inconveniences when combining multiple battery modules.

[0004] In order to achieve the above objectives, the present application provides a battery system, comprising:

[0005] A base, a surface of which is provided with a plurality of first connectors arranged at intervals, wherein the plurality of first connectors form an electrical connection;

[0006] A plurality of battery modules are arranged on the surface of the base, each of the battery modules comprises a plurality of battery box assemblies arranged in a stacked manner, a second connector is arranged at a first end of each of the battery box assemblies, a third connector is arranged at a second end of each of the battery box assemblies, and the first end and the second end are arranged opposite to each other along the stacking direction of the battery box assemblies;

[0007] Among them, in any two adjacent battery box assemblies of the same battery module, the third connector of one battery box assembly is plugged into the second connector of another battery box assembly; multiple first connectors are plugged into the second connectors of the head-end battery box assemblies in multiple battery modules one by one, so that the multiple battery modules are electrically connected, and the head-end battery box assembly is the battery box assembly closest to the base in the stacking direction.

[0008] In one embodiment, the first connector includes one of a male end and a female end, and the second connector includes the other of the male end and the female end;

[0009] The structure of the first connector is the same as that of the third connector.

[0010] In one embodiment, each of the battery box assemblies comprises:

[0011] A battery pack, comprising a plurality of single cells, wherein the battery pack is respectively connected to a second connector and a third connector in the same battery box assembly;

[0012] The management unit is respectively connected to the battery pack, the second connector and the third connector in the same battery box assembly, and is used to collect and manage the status parameters of the multiple single cells.

[0013] In one embodiment, in each of the battery box assemblies, the battery pack is provided with a first electrode interface, a second electrode interface and a first communication interface, the first electrode interface is connected to the first polarity end of the second connector, and the second electrode interface is connected to the first polarity end of the third connector;

[0014] Among them, the management unit is provided with a second communication interface and a third communication interface, the second communication interface is connected to the first communication interface, the third communication interface is respectively connected to the communication end of the second connector and the communication end of the third connector, and the second polarity end of the second connector is connected to the second polarity end of the third connector.

[0015] In one embodiment, it also includes:

[0016] A control module is disposed at the second end of the target battery box assembly, the control module is provided with a fourth connector, the fourth connector is used to be plugged with the third connector of the target battery box assembly, and the control module is used to monitor and manage the multiple battery modules;

[0017] Among them, the structure of the fourth connector is the same as that of the second connector, and the target battery box assembly includes the tail end battery box assembly of any of the battery modules, and the tail end battery box assembly and the head end battery box assembly are the two battery box assemblies that are farthest apart from the battery modules in the stacking direction.

[0018] In one embodiment, the control module includes:

[0019] A main control unit is provided with a fourth communication interface and a fifth communication interface, wherein the fourth communication interface is connected to the communication end of the fourth connector, and the main control unit is used to perform two-way communication with each of the battery box assemblies to analyze, manage and dynamically adjust the working status of each of the battery box assemblies;

[0020] A power control unit is connected to the first polarity end of the fourth connector and the second polarity end of the fourth connector respectively;

[0021] A connection component is provided on a side surface of the control module, the connection component includes a third electrode interface, a fourth electrode interface and a sixth communication interface, the sixth communication interface is connected to the fifth communication interface of the main control unit, the third electrode interface and the fourth electrode interface are respectively connected to the power control unit, and the connection component is used to form a communication connection and an electrical connection with the energy storage converter;

[0022] The power control unit is used to control the on / off of the circuit of the battery system and to provide safety protection for the battery system.

[0023] In one embodiment, the control module further includes:

[0024] A switch unit is arranged on the surface of the control module, and is used to receive a start / stop instruction to turn on and off the battery system.

[0025] In one embodiment, the control module further includes:

[0026] A display unit is arranged on the surface of the control module, and is used to display the operating status of the battery system.

[0027] In one embodiment, it also includes:

[0028] A plurality of short-circuit assemblies are respectively arranged at the second ends of the tail battery box assemblies of a plurality of battery modules except the target battery box assembly, and the short-circuit assemblies are used to form a passage between the first polarity end and the second polarity end of the third connector of the tail battery box assembly.

[0029] In one embodiment, the short-circuit assembly is provided with a fifth connector, the fifth connector is used to be plugged with the third connector of the tail end battery box assembly, and a short-circuit harness is provided between the first polarity end and the second polarity end of the fifth connector;

[0030] Wherein, the structure of the fifth connector is the same as that of the second connector.

[0031] In one embodiment, an energy storage system is provided, comprising:

[0032] A battery system as described above;

[0033] The energy storage converter is plugged into the connecting component of the battery system.

[0034] The battery system and energy storage system described above are provided with a base to carry multiple battery modules. The surface of the base is provided with multiple first connectors arranged at intervals. Each first connector can be correspondingly plugged into a battery module to achieve electrical connection between the base and the battery module. Each battery module includes multiple battery box assemblies arranged in a stacked manner. The first end and the second end of each battery box assembly are respectively provided with a second connector and a third connector, so that in two battery box assemblies adjacent to each other in the stacking direction, the third connector of one battery box assembly is plugged into the second connector of another battery box assembly. On the one hand, the battery box assemblies are stacked and installed through connectors to achieve electrical connection, which can effectively simplify the installation process and improve the convenience of installing the battery box assemblies. On the other hand, multiple battery modules are connected through the base, which reduces the footprint of the battery system while making the stacking height of the battery system moderate, which not only ensures the aesthetics of the battery system, but also avoids the problem of difficult installation caused by stacking the battery box assemblies too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 This is one of the structural schematic diagrams of a battery system provided in an embodiment;

[0037] Figure 2 It is a structural schematic diagram of a base provided in an embodiment;

[0038] Figure 3 This is one of the structural schematic diagrams of a battery box assembly provided in an embodiment;

[0039] Figure 4 This is a second structural schematic diagram of a battery box assembly provided in an embodiment;

[0040] Figure 5 This is a second structural schematic diagram of a battery system provided in an embodiment;

[0041] Figure 6 The third structural schematic diagram of a battery system provided in an embodiment;

[0042] Figure 7 This is a fourth structural schematic diagram of a battery system provided in an embodiment;

[0043] Figure 8 is a schematic diagram of the structure of a control module provided in an embodiment;

[0044] Fig. 9 This is a fifth structural schematic diagram of a battery system provided in an embodiment;

[0045] Fig.10 This is a sixth structural schematic diagram of a battery system provided in an embodiment;

[0046] Fig.11 Schematic diagram of the structure of a short-circuit component provided in one embodiment.

[0047] Description of reference numerals:

[0048] Base: 100; first connector: 110; battery module: 200; battery box assembly: 210; second connector: 211; third connector: 212; battery pack: 213; management unit: 214; control module: 300; fourth connector: 310; main control unit: 320; power control unit: 330; connection assembly: 340; switch unit: 350; display unit: 360; short-circuit assembly: 400; fifth connector: 410. DETAILED DESCRIPTION

[0049] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0051] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, in this specification, the term "and / or" includes any and all combinations of the relevant listed items.

[0052] A household energy storage system is an energy storage and management system for a home or residence, usually including energy storage batteries, energy storage inverters and other electrical equipment, which can provide flexible power regulation capabilities. Due to the uncertainty of factors such as weather and light of renewable energy, the power system often needs to have flexible regulation capabilities to cope with power fluctuations. As part of distributed energy, the household energy storage system can provide power support when power is unstable and store power when power is oversupplied. The household energy storage system can be combined with renewable energy equipment such as solar panels or wind turbines, which can convert electricity into direct current and store it in batteries. It can also intelligently control the storage and release of electricity according to the household power demand. When electricity is needed, the system converts the battery's electricity into alternating current for household use. The household energy storage system also has the ability to be connected to the grid and off-grid. In the grid-connected mode, the household energy storage system can obtain electricity from the grid and can also feed back excess electricity to the grid. In the off-grid mode, the household energy storage system operates independently of the grid to provide energy storage and release functions. Therefore, household energy storage systems have significant advantages in improving energy independence, integrating renewable energy, and coping with grid fluctuations, and are suitable for various homes and small commercial locations.

[0053] Furthermore, the battery system can be modularly designed, and multiple battery box assemblies can be stacked to form a stacking structure, making the battery system expansion and maintenance more convenient, and also conducive to production and transportation. However, in the related art, when the capacity of the energy storage system is large or the system capacity needs to be expanded later, more battery box assemblies need to be stacked. During the stacking installation process, as the number of battery box assemblies increases, the stacking height of the battery box assemblies increases. On the one hand, due to the heavy weight of the battery box, it is difficult to lift the battery box assembly to a high position for installation. Not only does it require multiple staff to be arranged for lifting and installation, which consumes human resources, but the overall stacking height of the large-capacity energy storage system is high, affecting the aesthetics of the system. On the other hand, in order to avoid the problem of inconvenient installation caused by the battery box assembly being lifted too high, the related art will expand a new battery system on one side of the original energy storage system, and electrically connect the newly added battery system to the original energy storage system through cables, but the external expansion solution will not only increase the floor space and construction volume, but also the cable connection method is susceptible to external interference and cause instability or loss of electrical connection.

[0054] Based on this, the present embodiment provides a modular household energy storage battery system that is easy to install, has a simple appearance, and occupies a smaller area, so as to overcome the defects existing in the above-mentioned related technologies.

[0055] In one embodiment, see Figure 1 , a battery system is provided, including: a base 100 and a plurality of battery modules 200.

[0056] Combined with reference Figure 2 to Figure 4 , the surface of the base 100 is provided with a plurality of first connectors 110 arranged at intervals, and the plurality of first connectors 110 form an electrical connection, and a plurality of battery modules 200 are provided on the surface of the base 100, and each battery module 200 includes a plurality of battery box assemblies 210 arranged in a stacked manner, and a second connector 211 is provided at the first end of each battery box assembly 210, and a third connector 212 is provided at the second end of each battery box assembly 210, and the first end and the second end are arranged oppositely along the stacking direction Y of the battery box assembly 210. Among them, in any two adjacent battery box assemblies 210 of the same battery module 200, the third connector 212 of one battery box assembly 210 is plugged into the second connector 211 of the other battery box assembly 210. The plurality of first connectors 110 are plugged into the second connector 211 of the head end battery box assembly 210 of the plurality of battery modules 200 in a one-to-one correspondence, so that the plurality of battery modules 200 form an electrical connection, and the head end battery box assembly 210 is the battery box assembly 210 closest to the base 100 in the stacking direction Y.

[0057] Among them, the base 100 serves as a carrier of the battery system, which is used to provide electrical connection between multiple battery modules 200 and support multiple battery modules 200. A plurality of first connectors 110 arranged at intervals are provided on the surface of the base 100. The multiple first connectors 110 can be distributed at intervals in the same direction. Each first connector 110 is connected to a battery module 200. Since an electrical connection is formed between the multiple first connectors 110, a single battery module 200 can be electrically connected to an adjacent battery module 200 by connecting to the corresponding first connector 110. And the number of first connectors 110 determines the number of columns of battery modules 200 installed in the battery system. For example, when two first connectors 110 are provided on the surface of the base 100, the two first connectors 110 are respectively connected to the battery modules 200. Each battery module 200 includes a plurality of battery box assemblies 210 arranged in a stacked manner. Thus, the battery system is installed with two columns of battery modules 200. It should be noted that the number of columns here can be understood as Figure 1 The number of battery modules distributed along the X direction.

[0058] For each battery module 200, it includes a plurality of battery box assemblies 210 stacked in sequence along the stacking direction Y, each battery box assembly 210 contains a certain number of single cells and electrical components, the battery box assembly 210 is used to store electrical energy and release it when needed, and it adopts a modular design to form an integral packaging unit, wherein, on the one hand, the second connector 211 arranged at the first end of a single battery box assembly 210 is plugged in the height direction with the third connector 212 at the second end of the battery box assembly 210 adjacent thereto, thereby in the stacking direction Y, two adjacent battery box assemblies 210 are electrically connected and detachably connected by plugging in the connectors, and at the same time, the battery box assembly 210 located at the bottom along the stacking direction Y of each battery module 200 can be called the head-end battery box assembly 210, and the second connector 211 of the head-end battery box assembly 210 is plugged in with a first connector 212 of the base 100. The connectors 110 are plugged in correspondingly to form an electrical connection and a detachable connection, so that each battery module 200 forms an integral electrical connection with the base 100, and then each battery box assembly 210 can form a series-parallel structure according to actual application requirements, and the adjacent battery box assemblies 210 in the stacking direction and the first-end battery box assembly 210 and the base 100 are plugged in and out with connectors, which can not only provide reliable electrical connections to reduce contact impedance and reduce energy loss, but also when the battery system needs to be maintained, the battery box assembly 210 needs to be replaced, or the battery box assembly 210 needs to be increased to achieve the purpose of capacity expansion, only one person is required to quickly complete the installation, that is, the detachable connection characteristics of the connector are directly used to complete quick installation, replacement and upgrading, and the connection between the battery box assemblies 210 and between the battery box assemblies 210 and the base 100 is neater, avoiding cable entanglement and a messy appearance.

[0059] On the other hand, based on the plurality of first connectors 110 electrically connected to each other arranged on the surface of the base 100, firstly, the plurality of battery modules 200 can be electrically connected and fixedly connected through a common base 100, which helps to simplify the wiring of the system, reduce the wiring complexity, reduce the construction workload of on-site installation, and improve the maintainability and operability of the system. Figure 5 and Figure 6 , Figure 5 and Figure 6 It shows the situation where two columns of battery modules are formed on the base 100, and multiple columns of battery modules 200 form a relatively compact layout on the ground. While effectively controlling the stacking height of each column of battery modules 200 to be moderate, a larger number of battery box assemblies 210 can be installed, which helps to avoid the stacking height of the entire battery system being too high, helps to reduce the ground area occupied by the system and improves the aesthetics of the battery system.

[0060] In the above battery system, a base 100 is provided to carry a plurality of battery modules 200. The surface of the base 100 is provided with a plurality of first connectors 110 arranged at intervals. Each first connector 110 can be plugged into a corresponding battery module 200 to realize the electrical connection between the base 100 and the battery module 200. Each battery module 200 includes a plurality of stacked battery box assemblies 210. The first end and the second end of each battery box assembly 210 are respectively provided with a second connector 211 and a third connector 212, so that in two adjacent battery box assemblies 210 in the stacking direction, the third connector 212 of one battery box assembly 210 is plugged into the second connector 211 of another battery box assembly 210. On the one hand, the battery box assemblies 210 are stacked and installed through connectors to realize electrical connection, which can effectively simplify the installation process and improve the convenience of installing the battery box assemblies 210. On the other hand, the plurality of battery modules 200 are connected through the base 100, which reduces the footprint of the battery system while making the stacking height of the battery system moderate, which not only ensures the aesthetics of the battery system, but also avoids the problem of difficulty in installation caused by stacking the battery box assemblies 210 too high.

[0061] In one embodiment, the first connector includes one of a male terminal and a female terminal, the second connector includes the other of the male terminal and the female terminal, and the structure of the first connector is the same as that of the third connector. The male terminal can be understood as a plug with a convex portion, and the female terminal can be understood as a socket with a concave portion. By way of example, this embodiment is described by taking the first connector as a female terminal and the second connector as a male terminal as an example. The electrical contact parts inside the first connector and the second connector are both surrounded by a shell, which has good protection and helps to reduce the impact of the external environment on the connector. Therefore, when the second connector is inserted into the first connector, the enclosure of the shell helps to provide a stable connection. Further, the connector adopts a reasonable guide and floating design, the electrical contact part of the connector includes a guide structure, and the shape and geometric structure of the first connector and the second connector are designed to be complementary to ensure that the connector can be automatically aligned when inserted, reduce the difficulty of insertion for the staff, and improve the accuracy of the connection. The electrical contact part of the connector can have a certain floating property, so that it can adapt to a certain deviation or misalignment when inserted. This design helps to cope with some mechanical or positional changes in actual use.

[0062] Therefore, through reasonable guiding and floating design, the connector can be installed more easily and provide reliable electrical connection in actual use, which is crucial to ensure the normal operation of the equipment and the convenience of the installation process.

[0063] In addition, the first connector and the third connector having the same structure follow the same standard or specification to ensure that they have consistent characteristics during design and manufacture, and adopt the same standardized electrical interface to make it easier to install the battery box assembly into the entire system, which helps to reduce the complexity of design and manufacturing.

[0064] In one embodiment, Figure 7 As shown, Figure 7 The case where three battery modules 200 are formed on the base 100 is shown, and each battery box assembly 210 includes: a battery pack 213 and a management unit 214 .

[0065] Combined with reference Figure 3 and Figure 4 The battery pack 213 includes a plurality of single cells, and the battery pack 213 is respectively connected to the second connector 211 and the third connector 212 in the same battery box assembly 210. The management unit 214 is respectively connected to the battery pack 213, the second connector 211 and the third connector 212 in the same battery box assembly 210, and is used to collect and manage the status parameters of the plurality of single cells.

[0066] Among them, the battery pack 213 serves as the energy storage unit of the battery box assembly 210. The multiple single cells in the battery pack 213 are combined in series or in parallel to meet the power demand of the system. The single cells usually include components such as a positive electrode, a negative electrode, an electrolyte and a separator, and can convert chemical energy into electrical energy. It can be various types of batteries, such as lithium-ion batteries, lead-acid batteries, nickel-cadmium batteries, etc., depending on the application requirements and performance requirements. Further, the positive terminal of the battery pack 213 can be electrically connected to the third connector 212 of the battery box assembly 210, and the negative terminal of the battery pack 213 can be electrically connected to the second connector 211 of the battery box assembly 210, so that the battery pack 213 can establish an electrical connection with two adjacent battery packs 213 in the stacking direction.

[0067] Among them, the management unit 214 can be a battery management unit 214 (Battery Management Unit, BMU), which is responsible for monitoring the status of each single cell in the battery pack 213, including voltage, current, temperature, etc. By monitoring these parameters, the BMU can understand the overall health of the battery pack 213, and can ensure that the charge state of each single cell in the battery pack 213 is relatively uniform through the battery balancing function. It can also detect faults in the battery pack 213, including single cell failure, overtemperature, overcharge, overdischarge and other abnormal conditions. Once an abnormality is detected, the BMU will issue an alarm so that measures can be taken in time to prevent potential safety risks. In addition, the management unit 214 is connected to the second connector 211 and the third connector 212 of the battery box assembly 210 through the communication interface respectively to communicate with the battery control unit (Battery Control Unit, BCU), and sends the monitored single cell state parameters and related data to the battery control unit, so that the BCU can more effectively control the battery charging and discharging process, power distribution, and adjust according to the actual state of each battery pack 213, thereby ensuring the normal operation of the entire battery management system.

[0068] In one embodiment, continue to refer to Figure 7 In each battery box assembly 210, the battery pack 213 is provided with a first electrode interface A1, a second electrode interface A2 and a first communication interface B1. The first electrode interface A1 is connected to the first polarity end of the second connector, and the second electrode interface A2 is connected to the first polarity end of the third connector. Among them, the management unit 214 is provided with a second communication interface B2 and a third communication interface B3. The second communication interface B2 is connected to the first communication interface B1, and the third communication interface B3 is respectively connected to the communication end of the second connector and the communication end of the third connector, and the second polarity end of the second connector is connected to the second polarity end of the third connector.

[0069] Among them, for a single battery box assembly 210, the first electrode interface A1 of the battery pack 213 can be one of the positive electrode interface and the negative electrode interface, and the second electrode interface A2 can be the other of the positive electrode interface and the negative electrode interface. The wiring method between the electrode interface of the battery pack 213 and the polarity end of the connector will affect the series-parallel method between each battery pack 213. This embodiment is explained by taking the battery packs 213 forming a series connection to achieve boost and capacity expansion as an example. Then, the first electrode interface A1 of the battery pack 213 is a negative electrode interface, which is connected to the first polarity end of the second connector, and the first polarity end of the second connector is the positive end. The second electrode interface A2 of the battery pack 213 is a positive electrode interface, which is connected to the first polarity end of the third connector, and the first polarity end of the third connector is the positive end. The second polarity end of the second connector and the second polarity end of the third connector are both negative ends, and the two are connected, so that each battery pack 213 in the battery system forms a series structure.

[0070] At the same time, the first communication interface B1 of the battery pack 213 is connected to the second communication interface B2 of the management unit 214, so that the battery pack 213 establishes a communication connection with the management unit 214, so that the management unit 214 can monitor the status parameters and related data of each single cell in the battery pack 213, and the third communication interface B3 of the management unit 214 is respectively connected to the communication end of the second connector and the communication end of the third connector, so that the management unit 214 of each battery box assembly 210 can transmit the status parameters of the single cell to the battery control unit, so that the battery control unit can coordinate the management of each battery pack 213.

[0071] Optionally, each communication interface and communication terminal can use serial COM communication. Through serial port communication, bidirectional data exchange can be performed between the management unit 214 and the battery pack 213, and between the management unit 214 and the battery control unit, including sending monitoring data and receiving control commands.

[0072] In one embodiment, in conjunction with reference Figure 8 and Fig. 9 , the battery system also includes: a control module 300.

[0073] The control module 300 is disposed at the second end of the target battery box assembly, and is provided with a fourth connector 310, which is used to be plugged with the third connector of the target battery box assembly, and the control module 300 is used to monitor and manage multiple battery modules. The structure of the fourth connector 310 is the same as that of the second connector, and the target battery box assembly includes the tail end battery box assembly of any battery module, and the tail end battery box assembly and the head end battery box assembly are the two battery box assemblies that are farthest apart in the stacking direction of the battery modules.

[0074] The control module 300 can be arranged at the top of the battery module located on one side of the edge of the base 100, and the battery box assembly 210 located at the top can be understood as the above-mentioned tail battery box assembly. The control module 300 is plugged into the third connector of the tail battery box assembly through the fourth connector 310, thereby installing the control module 300 on the battery box assembly and establishing electrical connections between the control module 300 and each battery box assembly. The structure of the fourth connector 310 of the control module 300 is the same as that of the second connector, and also adopts a reasonable guide and floating design. The electrical contact part of the fourth connector 310 includes a guide structure, and its shape and geometric structure design form a complementary match with the third connector, thereby improving the accuracy of the connection and the convenience of installation.

[0075] Furthermore, the control module 300 can receive the status parameters of the single cells transmitted by the management unit in each battery box assembly. Based on the real-time monitoring of the voltage, current, temperature and other parameters of the single cells, any potential problems or abnormalities can be identified, and corresponding management measures can be taken to improve the reliability and performance of the battery system. For example, the control module 300 is responsible for managing multiple battery modules, including battery balancing control, charge and discharge control, and fault diagnosis and protection. Battery balancing control can ensure that the charge state of each single cell in the battery pack is relatively uniform. Charge and discharge control can ensure the safety and efficiency of the battery pack during the charging and discharging process. Fault diagnosis and protection can respond to faults inside or outside the battery pack in a timely manner to ensure the safe operation of the system.

[0076] In one embodiment, continue to refer to Figure 7 The control module includes: a main control unit 320, a power control unit 330 and a connection component 340.

[0077] The main control unit 320 is provided with a fourth communication interface B4 and a fifth communication interface B5. The fourth communication interface B4 is connected to the communication end of the fourth connector. The main control unit 320 is used to perform two-way communication with each battery box assembly 210 to analyze, manage and dynamically adjust the working state of each battery box assembly 210. The power control unit 330 is respectively connected to the first polarity end of the fourth connector and the second polarity end of the fourth connector. The connecting component 340 is arranged on a side surface of the control module. The connecting component 340 includes a third electrode interface A3, a fourth electrode interface A4 and a sixth communication interface B6. The sixth communication interface B6 is connected to the fifth communication interface B5 of the main control unit 320. The third electrode interface A3 and the fourth electrode interface A4 are respectively connected to the power control unit 330. The connecting component 340 is used to form a communication connection and an electrical connection with the energy storage converter. Among them, the power control unit 330 is used to control the circuit on and off of the battery system and to provide safety protection for the battery system.

[0078] Among them, the main control unit 320 can be a battery control unit BCU. As a key component in the battery management system, the main control unit 320 is responsible for monitoring and managing the overall performance of each battery pack to ensure its safe and efficient operation. The main control unit 320 is connected to the communication end of the fourth connector of the control module through the fourth communication interface B4, thereby realizing two-way communication between the main control unit 320 and the battery packs in each battery box assembly 210. For example, the main control unit 320 obtains the working status of the single battery in real time by monitoring the voltage, current, temperature and other parameters of each single battery in each battery pack. The main control unit 320 can perform battery balancing control to ensure that the charge state of each single battery in the battery pack is relatively uniform to prevent overcharging or over-discharging of the battery. The main control unit 320 is also responsible for controlling the charging and discharging process of the battery to ensure that the battery operates within a safe range and outputs or stores electrical energy according to system requirements.

[0079] Further, a connection component 340 is provided on one side surface of the control module, for example, Fig. 9 On the one hand, the main control unit 320 has a fifth communication interface B5 for communicating with other system components. The fifth communication interface B5 of the main control unit 320 can be connected to the communication end of the energy storage inverter via the sixth communication interface B6 of the connecting component 340, so that the battery system establishes a communication connection with the energy storage inverter. On the other hand, the first polarity end (e.g., the positive end) of the fourth connector of the control module is connected to the third electrode interface A3 (e.g., the positive electrode interface) of the connecting component 340 via the power control unit 330, and the second polarity end (e.g., the negative end) of the fourth connector of the control module is connected to the fourth electrode interface A4 (e.g., the negative electrode interface) of the connecting component 340 via the power control unit 330, so that each battery box assembly 210 of the battery system establishes an electrical connection with the energy storage inverter. Based on this, the main control unit 320 can transmit the voltage, current, temperature and other information of the single cell to the energy storage inverter. The energy storage inverter can make corresponding energy conversion adjustments according to the real-time changes in the battery status to achieve protective charging and discharging of the battery. At the same time, the power control unit 330 establishes an electrical connection with each battery box assembly 210, and can implement protection measures for the single cell. By monitoring the status of the battery pack and the intelligent control of the power control unit 330, the entire battery system can be controlled and protected to prevent overcharging, over-discharging, over-temperature and other problems, thereby improving the safety and life of the battery pack.

[0080] In one embodiment, please refer to Figure 8 and Fig.10 , the control module 300 also includes: a switch unit 350.

[0081] The switch unit 350 is arranged on the surface of the control module 300, and the switch unit 350 is used to receive the start-stop command to turn on and off the battery system. Among them, the switch unit 350 is used as an operating switch for manual control of the entire energy storage system. The start-stop command refers to a manual switch operation or a program-controlled shutdown operation. It can be understood that the switch unit 350 has two operating states, open and closed. In addition to the basic switch function, it also has an excitation trip protection function, which can be controlled by the program to achieve a disconnection operation. Therefore, in some emergency situations or when special operating requirements arise, such as when the system fails or maintenance is required, the operator can disconnect the battery system through manual operation of the switch unit 350. In addition, the protection function of the excitation trip means that the switch unit 350 can ensure that the relevant excitation or relay equipment is also tripped in time through program control while disconnecting the circuit, so as to improve the safety of the system. The switch unit 350 takes into account the needs of manual operation and program control in the battery system to ensure that the battery system can be quickly and safely disconnected when necessary, which helps the smooth maintenance and protection of the system.

[0082] In one embodiment, continue to refer to Figure 8 , the control module 300 also includes: a display unit 360.

[0083] The display unit 360 is provided on the surface of the control module 300, and is used to display the operating status of the battery system. The operating status of the battery system may include the operating mode, fault information, communication status, and various key parameters of the battery system. The operator can understand the real-time operating status, fault information, or warning of the battery system by observing the information on the display unit 360. The display unit 360 plays an important role in information display and interaction in the battery system, and provides a convenient tool for the operation and maintenance personnel to ensure the stable operation of the battery system and timely discover potential problems.

[0084] In one embodiment, in conjunction with reference Figure 7 , Fig. 9 and Fig.10 The battery system further includes: a plurality of short-circuit components 400 .

[0085] Multiple short-circuit components 400 are respectively arranged at the second ends of the tail battery box components of multiple battery modules except the target battery box component, and the short-circuit components 400 are used to form a path between the first polarity end and the second polarity end of the third connector of the tail battery box component. It can be understood that, except for the battery module equipped with the control module, a short-circuit component 400 is plugged into the tail battery box component at the top of each remaining battery module, and the short-circuit component 400 forms a path between the first polarity end and the second polarity end of the third connector of the tail battery box component, thereby realizing the series jumper of the battery module.

[0086] In one embodiment, Fig.11 As shown, the short-circuit assembly 400 is provided with a fifth connector 410, which is used to be plugged with the third connector of the tail battery box assembly, and a short-circuit harness is provided between the first polarity end and the second polarity end of the fifth connector 410. The structure of the fifth connector 410 is the same as that of the second connector.

[0087] Among them, the first polarity end and the second polarity end of the fifth connector 410 of the short-circuit assembly 400 can be connected by a short-circuit harness to realize the series jumper of the battery module by short connection. The short-circuit harness can be set on the two polarity ends of the fifth connector 410 by crimping or welding.

[0088] In one embodiment, an energy storage system is provided, comprising: a battery system as described above and an energy storage inverter. The energy storage inverter is plugged into a connection component of the battery system. The energy storage inverter is used to control the charging and discharging processes of the energy storage system, and convert the DC power stored in the battery system into AC power so as to supply power to other devices or access the power grid when needed.

[0089] It can be understood that the energy storage system provided in this embodiment carries multiple battery modules by setting a base, and the surface of the base is provided with multiple first connectors arranged at intervals, each first connector can be correspondingly plugged into a battery module to achieve electrical connection between the base and the battery module, and each battery module includes multiple battery box assemblies arranged in a stacked manner, and the first end and the second end of each battery box assembly are respectively provided with a second connector and a third connector, so that in two adjacent battery box assemblies in the stacking direction, the third connector of one battery box assembly is plugged into the second connector of another battery box assembly. On the one hand, the battery box assemblies are stacked and installed through connectors to achieve electrical connection, which can effectively simplify the installation process and improve the convenience of installing the battery box assemblies. On the other hand, multiple battery modules are connected through the base, which reduces the footprint of the battery system while making the stacking height of the battery system moderate, which not only ensures the aesthetics of the battery system, but also avoids the problem of difficulty in installation caused by stacking the battery box assemblies too high.

[0090] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery system, characterized in that: include: A base, a surface of which is provided with a plurality of first connectors arranged at intervals, wherein the plurality of first connectors form an electrical connection; A plurality of battery modules are arranged on the surface of the base, each of the battery modules comprises a plurality of battery box assemblies arranged in a stacked manner, a second connector is arranged at a first end of each of the battery box assemblies, a third connector is arranged at a second end of each of the battery box assemblies, and the first end and the second end are arranged opposite to each other along the stacking direction of the battery box assemblies; Among them, in any two adjacent battery box assemblies of the same battery module, the third connector of one battery box assembly is plugged into the second connector of another battery box assembly; multiple first connectors are plugged into the second connectors of the head-end battery box assemblies in multiple battery modules one by one, so that the multiple battery modules are electrically connected, and the head-end battery box assembly is the battery box assembly closest to the base in the stacking direction.

2. The battery system according to claim 1, characterized in that: The first connector includes one of a male terminal and a female terminal, and the second connector includes the other of the male terminal and the female terminal; The structure of the first connector is the same as that of the third connector.

3. The battery system according to claim 1, characterized in that: Each of the battery box assemblies comprises: A battery pack, comprising a plurality of single cells, wherein the battery pack is respectively connected to a second connector and a third connector in the same battery box assembly; The management unit is respectively connected to the battery pack, the second connector and the third connector in the same battery box assembly, and is used to collect and manage the status parameters of the multiple single cells.

4. The battery system according to claim 3, characterized in that: In each of the battery box assemblies, the battery pack is provided with a first electrode interface, a second electrode interface and a first communication interface, the first electrode interface is connected to the first polarity end of the second connector, and the second electrode interface is connected to the first polarity end of the third connector; Among them, the management unit is provided with a second communication interface and a third communication interface, the second communication interface is connected to the first communication interface, the third communication interface is respectively connected to the communication end of the second connector and the communication end of the third connector, and the second polarity end of the second connector is connected to the second polarity end of the third connector.

5. The battery system according to claim 1, characterized in that: Also includes: A control module is disposed at the second end of the target battery box assembly, the control module is provided with a fourth connector, the fourth connector is used to be plugged with the third connector of the target battery box assembly, and the control module is used to monitor and manage the multiple battery modules; Among them, the structure of the fourth connector is the same as that of the second connector, and the target battery box assembly includes the tail end battery box assembly of any of the battery modules, and the tail end battery box assembly and the head end battery box assembly are the two battery box assemblies that are farthest apart from the battery modules in the stacking direction.

6. The battery system according to claim 5, characterized in that: The control module comprises: A main control unit is provided with a fourth communication interface and a fifth communication interface, the fourth communication interface is connected to the communication end of the fourth connector, and the main control unit is used to perform two-way communication with each of the battery box assemblies to analyze, manage and dynamically adjust the working status of each of the battery box assemblies; A power control unit is connected to the first polarity end of the fourth connector and the second polarity end of the fourth connector respectively; A connection component is provided on a side surface of the control module, the connection component includes a third electrode interface, a fourth electrode interface and a sixth communication interface, the sixth communication interface is connected to the fifth communication interface of the main control unit, the third electrode interface and the fourth electrode interface are respectively connected to the power control unit, and the connection component is used to form a communication connection and an electrical connection with the energy storage converter; The power control unit is used to control the on / off of the circuit of the battery system and to provide safety protection for the battery system.

7. The battery system according to any one of claims 5 or 6, characterized in that: The control module also includes: A switch unit is arranged on the surface of the control module, and is used to receive a start / stop instruction to turn on and off the battery system.

8. The battery system according to claim 5, characterized in that: The control module also includes: A display unit is arranged on the surface of the control module, and is used to display the operating status of the battery system.

9. The battery system according to claim 5, characterized in that: Also includes: A plurality of short-circuit assemblies are respectively arranged at the second ends of the tail battery box assemblies of a plurality of battery modules except the target battery box assembly, and the short-circuit assemblies are used to form a passage between the first polarity end and the second polarity end of the third connector of the tail battery box assembly.

10. The battery system according to claim 9, characterized in that: The short-circuit assembly is provided with a fifth connector, and the fifth connector is used to be plugged with the third connector of the tail end battery box assembly, and a short-circuit harness is provided between the first polarity end and the second polarity end of the fifth connector; The structure of the fifth connector is the same as that of the second connector.

11. An energy storage system, characterized in that: include: The battery system according to any one of claims 1 to 10; The energy storage converter is plugged into the connecting component of the battery system.

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