A multi-module battery system and a packaged power supply having the same

Abstract

This utility model discloses a multi-module battery system and a containerized power supply thereof, relating to the field of battery system technology. It includes a sealed cabinet; a battery rack; multiple battery modules, including a liquid-cooled pull-out rack, cell assemblies, and high and low voltage circuit boards; the liquid-cooled pull-out rack slides in and out of the battery module mounting cavity on the battery rack; the cell assemblies are assembled in the liquid-cooled chamber within the liquid-cooled pull-out rack; the high and low voltage circuit boards are located at the top of the cell assemblies and electrically connected to them; a cooling pipe assembly connecting the inlet and outlet of the liquid-cooled pull-out rack; an electrical control box electrically connected to the high and low voltage circuit boards of each battery module; a power plug electrically connected to the electrical control box is mounted on the outer wall of the sealed cabinet; multiple BMS battery management devices; the multiple BMS battery management devices are detachably mounted on the battery rack and electrically connected to the high and low voltage circuit boards of the multiple battery modules. This utility model features a fully enclosed cabinet, integrating an independent liquid cooling system for each module within a confined space, achieving efficient and uniform cooling and heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of battery system technology, and in particular to a multi-module battery system and a containerized power supply having the same. Background Technology

[0002] Currently, battery systems have significant potential demand in the marine new energy market, with high safety requirements and large single-ship capacity. However, the high cost per unit capacity significantly limits the development of marine new energy. As the marine new energy market grows, the demand for battery systems will continue to increase. Under the strict safety controls of classification societies, reducing the cost of battery systems has become an urgent problem to solve. Typically, to meet the weight requirements for battery pack replacement by classification societies, many manufacturers reduce battery pack weight to under 130kg. However, to meet the safety requirements of classification societies, each battery pack requires various safety devices and structural components, resulting in high costs.

[0003] Existing solutions mainly use battery packs as the basic unit. As a complete whole, a battery pack is usually composed of individual modules. The capacity of a single battery pack is small, and it requires a complete set of battery pack components, such as high and low voltage wiring harnesses (63), BMS acquisition units, enclosures, and top covers. The battery pack components of the battery system are redundant and repetitive, resulting in low energy density and high cost. Under weight constraints, the capacity of the battery pack cannot be increased. Some solutions use miniature containers with drawer-type structures inside. The modules are slidably connected to the shelves to achieve module-level replacement and maintenance. This solution solves the problem of low integration efficiency of battery packs to some extent. For the miniature container solution, the thermal management system uses air cooling, which has low heat dissipation efficiency, poor temperature uniformity, low specific heat capacity of air, and limited heat transfer capacity. Moreover, the use of fan-cooled heat dissipation cannot achieve complete sealing, making it unsuitable for use in complex environments such as ships. In addition, the miniature container is small in size and can only hold a limited amount of electricity, making it unsuitable for ships with high power requirements.

[0004] Therefore, how to design a multi-module battery system and its containerized power supply that can achieve a fully enclosed cabinet, integrate an independent liquid cooling system for each module in a small cabinet space to achieve efficient and uniform cooling and heat dissipation, and has the characteristics of stable structure, strong anti-shake capability and large energy storage capacity is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention proposes a multi-module battery system and a containerized power supply having the same, aiming to solve the technical problems of the above-mentioned traditional battery system cabinet being not airtight, having poor heat dissipation, and having an unstable structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a multi-module battery system, including:

[0008] A sealed cabinet, wherein the front side of the sealed cabinet is open and a sealing door is detachably and sealingly installed at the opening;

[0009] A battery rack is fixedly installed inside the sealed cabinet, and the battery rack has multiple battery module mounting cavities arranged sequentially along the height direction;

[0010] Multiple battery modules are provided, each battery module comprising a liquid-cooled pull-out frame, a cell assembly, and high and low voltage circuit boards. The liquid-cooled pull-out frame can pass through the opening and slide in and out of the battery module mounting cavity along the front-to-back direction of the sealed cabinet. The liquid-cooled pull-out frame has a liquid-cooling chamber inside, in which the cell assembly is installed. The high and low voltage circuit boards are located at the top of the cell assembly and are electrically connected to the cell assembly. Each liquid-cooled pull-out frame has an inlet and an outlet that communicate with its internal cooling channel.

[0011] A cooling piping assembly is arranged within the battery rack and connects the inlet and outlet of each of the liquid-cooled pull-out racks to supply coolant; both the inlet and outlet of the cooling piping assembly extend through the outer wall of the sealed cabinet to the outside of the sealed cabinet.

[0012] An electrical control box is located inside the sealed cabinet and is electrically connected to the high and low voltage circuit boards of each battery module; a power plug electrically connected to the electrical control box is installed on the outer wall of the sealed cabinet.

[0013] Multiple BMS battery management devices; the housings of the multiple BMS battery management devices are detachably mounted on the battery rack and are electrically connected one-to-one to the high and low voltage circuit boards of the multiple battery modules.

[0014] This invention provides a sealed cabinet for a multi-module battery system, ensuring that the internally installed battery modules are unaffected by complex external environments. It is suitable for various scenarios, especially for new energy applications on ships. The battery modules are mounted on battery racks, which serve as the main support structure bearing the heavy load of multiple battery modules, making them more stable and durable. The sealed cabinet's structure and shape remain stable under multi-module installation conditions, thus ensuring excellent sealing performance. Furthermore, liquid cooling technology extends the heat dissipation structure to each individual battery module, achieving efficient heat dissipation even with multiple battery modules centrally installed within the sealed cabinet, thereby ensuring stable system operation. The liquid-cooled pull-out rack of this invention serves multiple functions: supporting the battery cell assembly, facilitating easy removal and replacement of the battery cell assembly, and efficiently cooling the battery cell assembly through an internal liquid cooling chamber. The inlet and outlet of the cooling pipe assembly responsible for supplying liquid to the pull-out rack are located outside the sealed cabinet, connecting to external cold liquid supply equipment for circulating liquid supply, providing more space for the layout of multiple battery modules within the sealed cabinet. The high and low voltage circuit boards of this utility model serve as integrated busbars for the CCS (Computer-Controlled System), integrating components such as conductive busbars and control circuits (voltage and temperature acquisition) in the battery module into a single module to achieve functions such as high-voltage series and parallel connection of battery cells, temperature acquisition, voltage acquisition, and overcurrent fuse protection. The BMS (Battery Management System) of this utility model is mainly used to manage and monitor various parameters of the battery module, ensuring the safe, stable, and long-life operation of the battery cell group. The electrical control box of this utility model is used to switch and control the charging and discharging of multi-module battery systems.

[0015] As a further improvement to the above technical solution, the liquid-cooled pull-out frame includes a liquid-cooled plate, a front-end plate assembly, and a rear-end plate assembly; the front-end plate assembly and the rear-end plate assembly are opposite each other and are vertically disposed on the front and rear parts of the liquid-cooled plate; the area above the liquid-cooled plate corresponding to the area between the front-end plate assembly and the rear-end plate assembly constitutes a liquid-cooled chamber for installing the battery cell assembly; the battery cell assembly is located in the liquid-cooled chamber and fixed on the liquid-cooled plate;

[0016] The battery module mounting cavity is provided with a limiting slot structure, and the outer periphery of the liquid cooling plate is formed with a strip structure that can be adapted to the limiting slot structure to position the liquid cooling pull-out bracket.

[0017] The liquid cooling plate has a cooling channel inside, and the front of the liquid cooling plate has an inlet and an outlet that connect to the cooling channel; the cooling pipe assembly is detachably connected to and connects to the inlet and outlet of the liquid cooling plate to supply coolant.

[0018] The beneficial effects of the above technical solution are as follows: the liquid cooling plate is the main load-bearing structure for the battery cell assembly, and it also works in conjunction with the limiting slot structure inside the battery module mounting cavity to limit the liquid cooling pull-out bracket, thereby improving the stability of the battery module installation on the battery rack. The liquid inlet and outlet are located at the front of the liquid cooling plate, which facilitates the disassembly of the cooling pipe assembly after opening the sealed door, and then the removal of the battery module; after the liquid cooling pull-out bracket is inserted into the battery module mounting cavity, the front plate assembly corresponds to the sealed door side of the sealed cabinet, which facilitates maintenance personnel to pull out the liquid cooling pull-out bracket horizontally by pulling the front plate assembly.

[0019] As a further improvement to the above technical solution, there are two or more battery cell groups, which are arranged side by side along the width direction of the liquid cooling plate; the high and low voltage circuit boards are located on the top of the two or more battery cell groups and are electrically connected to the two or more battery cell groups.

[0020] The beneficial effects of the above technical solution are: by arranging two or more sets of battery cells in a single battery module, the energy storage capacity of a single battery module in the battery system can be increased; and the high and low voltage circuit boards can be connected in series and parallel and coordinate the control of two or more sets of battery cells, thereby improving the integration of the battery module.

[0021] As a further improvement to the above technical solution, a high-voltage connection busbar assembly is also included; the high-voltage connection busbar assembly includes multiple high-voltage connection busbars;

[0022] The high and low voltage circuit boards of the multiple battery modules are connected to each other and to the electrical control box via the high voltage connection.

[0023] The beneficial effects of the above technical solution are: the high voltage connector is used to connect the high and low voltage circuit boards of multiple battery modules in series and parallel, and then connect their positive and negative terminals to the electrical control box. By combining different numbers of battery modules, different standardized power capacities can be designed to meet greater power demands.

[0024] As a further improvement to the above technical solution, the high-voltage connection bar is a shaped metal plate formed by bending a strip of metal plate, and its outer wall is covered with an insulating layer.

[0025] The beneficial effects of the above technical solution are: the high-voltage connector is designed as a shaped metal plate, which improves the ability to withstand high voltage and conduct large current, and also facilitates system assembly and improves the efficiency of battery module maintenance, replacement and disassembly.

[0026] As a further improvement to the above technical solution, the high-voltage connection bus assembly also includes multiple high-voltage bases; each of the front-end plate assemblies can be detachably connected to the high-voltage base; fasteners for fastening the connection end of the high-voltage connection bus to the output end of the high- and low-voltage circuit board are installed in the fixing holes on the front end face of the high-voltage base.

[0027] The beneficial effects of the above technical solution are: the high-voltage base acts as an insulating connector, providing an installation foundation for the electrical connection between the high-voltage connector and the output terminals of the high and low voltage circuit boards; the fixing holes of the high-voltage base are arranged on its front face, allowing maintenance personnel to directly install and remove fasteners from the front after opening the sealed door, making maintenance more convenient and efficient.

[0028] As a further improvement to the above technical solution, multiple BMS battery management devices are arranged between the sealing door and the corresponding battery module, and are all electrically connected to the corresponding high and low voltage circuit boards through low voltage wiring harnesses.

[0029] The beneficial effects of the above technical solution are: the sampling harness in the high and low voltage circuits collects information such as the voltage and temperature of the battery cells, and then transmits it to the BMS through the low voltage harness. In this way, the BMS can collect the battery cell information and perform real-time monitoring and management; the BMS battery management device is directly arranged in front of each corresponding battery module, which is convenient for disassembly and assembly, and also reduces the length of the low voltage harness.

[0030] As a further improvement to the above technical solution, there are two or more battery racks, which are arranged side by side along the width of the sealed cabinet; the high and low voltage circuit boards of the battery modules on adjacent battery racks are electrically connected.

[0031] The beneficial effects of the above technical solution are: by arranging two or more sets of battery racks side by side along the width of the sealed cabinet, the capacity of the battery cells in the system is further increased, thereby improving the energy storage capacity of the system.

[0032] As a further improvement to the above technical solution, a fire-fighting piping assembly is also included, which includes a main fire-fighting pipe and multiple branch fire-fighting pipes; the main fire-fighting pipe is arranged on the battery rack along the height direction of the battery rack and corresponds to the side of the battery module mounting cavity; one end of the main fire-fighting pipe passes through the outer wall of the sealed cabinet and extends to the outside of the sealed cabinet; the multiple branch fire-fighting pipes are arranged one-to-one with multiple battery module mounting cavities, one end of each branch fire-fighting pipe is connected to and communicates with the main fire-fighting pipe, and the other end extends into the corresponding battery module mounting cavity.

[0033] The beneficial effects of the above technical solution are: the main fire hose is arranged along the battery rack, effectively utilizing the battery rack space; each battery module mounting cavity is equipped with a fire hose branch pipe; when a battery module experiences thermal runaway, the fire hose can be directly and effectively sprayed onto the battery module, achieving direct fire extinguishing of the battery cells, resulting in higher fire extinguishing efficiency and better safety. The fire hose assembly can be assembled before the module assembly.

[0034] Another aspect of this utility model provides a containerized power supply, including multiple multi-module battery systems and a container; the container has multiple battery systems arranged horizontally side by side.

[0035] The battery system of this invention can be used as a standard unit and combined according to actual needs to meet different power requirements. Multiple sealed battery system cabinets can be arranged side by side in a container to form a high-capacity containerized power source.

[0036] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a multi-module battery system and a containerized power supply having the same, which has the following advantages and beneficial effects:

[0037] 1. This utility model uses multiple battery modules as basic units to integrate an independent high-capacity battery system, enabling module-level maintenance and replacement.

[0038] 2. The battery module of this utility model integrates a liquid cooling plate, and each battery module integrates an independent liquid cooling system, making the system cooling more efficient and uniform.

[0039] 3. The fire-fighting pipeline inside the sealed cabinet and battery structure of this utility model reaches the top of the battery module point-to-point, realizing direct spray fire extinguishing of the battery cell.

[0040] 4. This utility model achieves the limiting and guiding assembly of the battery module through the cooperation of the limiting slot structure and the insert structure, which enables the rapid assembly and disassembly of the module.

[0041] 5. The high-voltage connection between battery modules in the battery cabinet of this utility model is made by bending and shaping a metal plate to form a high-voltage connection busbar. The high-voltage connection busbar can be a copper busbar or an aluminum busbar, which greatly reduces the cost.

[0042] 6. The mounting surface of the high-voltage base of the battery module of this utility model is perpendicular to the operator, which facilitates installation and disassembly.

[0043] 7. The battery cabinet of this utility model is fully sealed through the sealed cabinet and battery rack, which meets the IPX7 protection requirements and can be applied to different scenarios.

[0044] 8. The battery cabinet of the battery system of this utility model can be designed in a standardized manner. By connecting the battery cabinets in series and parallel, battery systems with different power and voltage requirements can be formed. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0046] Figure 1 This utility model presents a three-dimensional schematic diagram of a sealed cabinet for a multi-module battery system.

[0047] Figure 2 An exploded view of the overall structure of a multi-module battery system according to this utility model;

[0048] Figure 3 This utility model provides an assembly diagram of the high-voltage connection busbar assembly, cooling pipe assembly, and fire-fighting pipe assembly of a multi-module battery system.

[0049] Figure 4 This utility model provides a schematic diagram of the layout of the main fire pipe and branch fire pipes of a multi-module battery system.

[0050] Figure 5 This utility model provides a schematic diagram showing the state of a fire-fighting branch pipe of a multi-module battery system extending to the top of the battery module mounting cavity within the battery rack.

[0051] Figure 6 This utility model presents a schematic diagram of the structure of a BMS battery management device for a multi-module battery system.

[0052] Figure 7 This utility model discloses an exploded view of the battery module structure of a multi-module battery system.

[0053] Figure 8 This utility model provides a schematic diagram of the battery module structure of a multi-module battery system.

[0054] Figure 9 This utility model provides a schematic diagram of the front end face of a battery module in a multi-module battery system.

[0055] Figure 10 This utility model provides a schematic diagram of a high-voltage base structure for a multi-module battery system.

[0056] Figure 11 This utility model presents a schematic diagram of a sealing door structure for a multi-module battery system.

[0057] Figure 12 This utility model provides a schematic diagram of a limiting slot structure for a multi-module battery system.

[0058] Figure 13This utility model provides a schematic diagram of the battery module installation of a multi-module battery system.

[0059] Figure 14 This utility model provides a schematic diagram of the front, side, and rear installation states of a multi-module battery system.

[0060] Figure 15 This utility model provides a schematic diagram of the connection status between the high-voltage base and the high-voltage connector of a multi-module battery system.

[0061] Figure 16 This utility model presents a schematic diagram of the cabinet door sealing ring structure for a multi-module battery system.

[0062] Figure 17 Top view of the overall structure of a modular power supply according to this utility model;

[0063] In the diagram: 1. Sealed cabinet; 11. Opening; 12. Sealed door; 121. Cabinet door sealing ring; 122. Sealing bolt; 123. Water tap mounting port; 124. Fire hose mounting port; 125. Power plug mounting port; 2. Battery rack; 21. Battery module mounting cavity; 211. Limiting slot structure; 3. Battery module; 31. Liquid-cooled pull-out rack; 311. Liquid cooling plate; 3111. Insertion strip structure; 3112. Liquid inlet; 3113. Liquid outlet; 312. Front panel assembly; 3121. Front panel; 3122. Module front fixing plate; 3123. Module connecting piece; 3124. Module handle; 3125. Positioning bolt; 313. Rear panel assembly; 313 1. Rear end plate; 3132. Module tail fixing plate; 3133. Limiting strip plate; 314. Liquid cooling chamber; 32. Battery cell assembly; 33. High and low voltage circuit boards; 331. Outlet terminal; 4. Cooling pipe assembly; 41. Liquid inlet terminal; 42. Liquid return terminal; 5. Electrical control box; 51. Power plug; 6. BMS battery management device; 61. BMS bracket; 611. Bracket mounting hole; 62. BMS; 63. Low voltage wiring harness; 7. High voltage connection busbar assembly; 71. High voltage connection busbar; 72. High voltage base; 721. Fixing hole; 722. Fastener; 8. Fire protection pipe assembly; 81. Fire main pipe; 811. Fire nozzle; 82. Fire branch pipe; 9. Container. Detailed Implementation

[0064] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0065] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0068] According to the embodiments of this utility model, such as Figures 1 to 16 As shown, a multi-module battery system includes: a sealed cabinet 1, a battery rack 2, multiple battery modules 3, a cooling pipeline assembly 4, an electrical control box 5, and multiple BMS battery management devices 6.

[0069] The front of the sealed cabinet 1 is open 11, and a sealing door 12 is detachably and sealed at the opening 11.

[0070] The battery rack 2 is fixedly installed inside the sealed cabinet 1, and the battery rack 2 has multiple battery module mounting cavities 21 arranged sequentially along the height direction.

[0071] The battery module 3 includes a liquid-cooled pull-out frame 31, a cell assembly 32, and a high- and low-voltage circuit board 33. The liquid-cooled pull-out frame 31 can pass through the opening 11 and slide in and out of the battery module mounting cavity 21 along the front-to-back direction of the sealed cabinet 1. The liquid-cooled pull-out frame 31 has a liquid-cooling chamber 314 inside, and the cell assembly 32 is installed in the liquid-cooling chamber 314. The high- and low-voltage circuit board 33 is located at the top of the cell assembly 32 and is electrically connected to the cell assembly 32. Each liquid-cooled pull-out frame 31 is provided with an inlet 3112 and an outlet 3113 that connect to its internal cooling channel.

[0072] The cooling pipe assembly 4 is arranged inside the battery rack 2 and connects the inlet 3112 and outlet 3113 of each liquid-cooled pull-out rack 31 to supply coolant; the inlet end 41 and return end 42 of the cooling pipe assembly 4 both penetrate the outer wall of the sealed cabinet 1 and extend to the outside of the sealed cabinet 1.

[0073] The electrical control box 5 is located inside the sealed cabinet 1 and is electrically connected to the high and low voltage circuit boards 33 of each battery module 3; a power plug 51 that is electrically connected to the electrical control box 5 is installed on the outer wall of the sealed cabinet 1.

[0074] The housings of multiple BMS battery management devices 6 can be detachably mounted on the battery rack 2 and are electrically connected to the high and low voltage circuit boards 33 of multiple battery modules 3 one by one.

[0075] This embodiment presents a sealed cabinet 1 for a multi-module battery system, ensuring that the internally installed battery modules 3 are unaffected by complex external environments. It is suitable for various scenarios, particularly for new energy applications on ships. The battery modules 3 are mounted on a battery rack 2, which serves as the main support structure bearing the heavy load of multiple battery modules 3, making it more stable and durable. Under multi-module installation conditions, the structure and shape of the sealed cabinet 1 remain stable, thus ensuring excellent sealing performance. Furthermore, through liquid cooling technology, the heat dissipation structure is extended to each individual battery module 3, making each battery module 3 an independent unit with its own liquid cooling system that can be directly assembled with the battery rack 2. This achieves efficient heat dissipation under conditions of concentrated installation of multiple battery modules 3 within a sealed cabinet, thereby ensuring the stable operation of the battery system. The liquid-cooled pull-out rack 31 of this invention has multiple functions: supporting the battery cell assembly 32, facilitating easy disassembly and replacement of the battery cell assembly 32, and efficiently cooling the battery cell assembly 32 by constructing a liquid cooling chamber 314 inside. The inlet end 41 and return end 42 of the cooling pipe assembly 4, which supplies liquid to the liquid-cooled pull-out frame 31 for heat exchange and cooling, are both located outside the sealed cabinet 1. This allows for connection to an external cold liquid supply device for circulating liquid supply, providing more space for the layout of multiple battery modules 3 within the sealed cabinet 1. The high and low voltage circuit board 33 of this invention acts as a CCS integrated busbar, integrating the conductive busbars, control circuit voltage, temperature acquisition, and other components in the battery module 3 into a single module to achieve functions such as high-voltage series and parallel connection of battery cells, temperature acquisition, voltage acquisition, and overcurrent fuse protection. The BMS battery management device 6 of this invention is mainly used to manage and monitor various parameters of the battery module 3, ensuring the safe, stable, and long-life operation of the cell assembly 32. The electrical control box 5 of this invention is used to switch and control the charging and discharging of the multi-module battery system.

[0076] Specifically, a door sealing ring 121 is provided between the sealed door 12 and the sealed cabinet 1. The sealed door 12 is fastened to the front side of the sealed cabinet 1 by sealing bolts 122 to seal the opening 11. The sealed cabinet 1 is welded and fixed together with the battery rack 2. The sealing fit between the sealed door 12 and the sealed cabinet 1 of the battery system achieves an IPX7 protection level. Both are made of steel and meet the standard material requirements.

[0077] In some embodiments, the liquid-cooled pull-out bracket 31 includes a liquid-cooled plate 311, a front-end plate assembly 312, and a rear-end plate assembly 313; the front-end plate assembly 312 and the rear-end plate assembly 313 are perpendicularly disposed on the front and rear sides of the upper surface of the liquid-cooled plate 311, respectively; the area above the liquid-cooled plate 311 corresponding to the area between the front-end plate assembly 312 and the rear-end plate assembly 313 constitutes a liquid-cooled chamber 314 for mounting the battery cell assembly 32; the battery cell assembly 32 is located in the liquid-cooled chamber 314 and fixed on the liquid-cooled plate 311.

[0078] The battery module mounting cavity 21 is provided with a limiting slot structure 211, and the outer periphery of the liquid cooling plate 311 is formed with a strip structure 3111 that can be adapted to the limiting slot structure 211 to position the liquid cooling pull-out bracket 31.

[0079] The liquid cooling plate 311 has a cooling channel inside, and the front of the liquid cooling plate 311 has a liquid inlet 3112 and a liquid outlet 3113 that connect to the cooling channel; the cooling pipe assembly 4 is detachably connected to and connects the liquid inlet 3112 and the liquid outlet 3113 of the liquid cooling plate 311 to supply coolant.

[0080] The liquid cooling plate 311 is the main supporting structure for the battery cell assembly 32. It also works in conjunction with the limiting slot structure 211 within the battery module mounting cavity 21 to limit the liquid cooling pull-out bracket 31, improving the stability of the battery module 3 on the battery rack 2. The liquid inlet 3112 and outlet 3113 are located at the front of the liquid cooling plate 311, facilitating the removal of the cooling pipe assembly 4 after opening the sealing door 12, and subsequently pulling out the battery module 3. After the liquid cooling pull-out bracket 31 is inserted into the battery module mounting cavity 21, the front end plate assembly 312 corresponds to the side of the sealing door 12 of the sealed cabinet 1, allowing maintenance personnel to horizontally pull out the liquid cooling pull-out bracket 31 via the front end plate assembly 312.

[0081] In some embodiments, the liquid-cooled pull-out bracket 31 further includes two liquid-cooled side plates; the two liquid-cooled side plates are arranged along the length direction of the liquid-cooled plate 311 and correspond to the top of the liquid-cooled plate 311; the two liquid-cooled side plates are vertically fixed to both sides of the width direction of the liquid-cooled plate 311; the cooling channels inside the two liquid-cooled side plates are connected to the cooling channels inside the liquid-cooled plate 311. The upper surface of the liquid-cooled plate 311, the opposite surfaces of the two liquid-cooled side plates, and the opposite surfaces of the front end plate assembly 312 and the rear end plate assembly 313 together enclose and define the liquid-cooled chamber 314. The two liquid-cooled side plates and the liquid-cooled plate 311 form an independent liquid-cooled structure for three-dimensional heat dissipation of the battery cell assembly 32, which enhances the heat dissipation effect and can meet the structural layout of multiple battery modules 3 in a sealed cabinet 1, so as to meet the requirements of high-capacity and complex environment applications.

[0082] In some embodiments, there are two or more battery cell groups 32, which are arranged side by side along the width direction of the liquid cooling plate 311; the high and low voltage circuit boards 33 are disposed on the top of the two or more battery cell groups 32 and are electrically connected to the two or more battery cell groups 32.

[0083] By arranging two or more sets of battery cells 32 within a single battery module 3, the energy storage capacity of a single battery module 3 in the battery system can be increased; and the high and low voltage circuit boards 33 can be connected in series and parallel and coordinate the control of two or more sets of battery cells 32, thereby improving the integration of the battery module 3.

[0084] Specifically, there are two battery cell groups 32, each of which includes multiple battery cells arranged in parallel. The front-end board assembly 312 includes two front-end boards 3121, a module front fixing plate 3122, and a module connecting piece 3123; the rear-end board assembly 313 includes two rear-end boards 3131 and a module rear fixing plate 3132.

[0085] Each battery cell assembly 32 has a front-end plate 3121 and a rear-end plate 3131 arranged correspondingly at its front and rear ends. The bottom front of the front-end plates 3121 of the two battery cell assemblies 32 is fixedly connected together by a module front fixing plate 3122. The top of the front-end plates 3121 of the two battery cell assemblies 32 is fixedly connected together by a module connecting piece 3123. The rear side of the rear-end plates 3131 of the two battery cell assemblies 32 is fixedly connected together by a module rear fixing plate 3132. The front-end plates 3121 and rear-end plates 3131 of each battery cell assembly 32 are fastened with straps to clamp the corresponding battery cell assembly 32 in the middle. A liquid cooling plate 311 is fixed to the bottom of the two battery cell assemblies 32 for heat dissipation.

[0086] Specifically, the upper surface of the liquid cooling plate 311 is fixedly bonded to the bottom surface of the battery cell assembly 32 using structural adhesive or thermally conductive structural adhesive to improve thermal conductivity.

[0087] Specifically, the liquid-cooled pull-out bracket 31 also includes an intermediate liquid-cooled plate; the intermediate liquid-cooled plate is arranged between the two sets of battery cell groups 32; the intermediate liquid-cooled plate is parallel to and opposite the two liquid-cooled side plates; the cooling channel inside the intermediate liquid-cooled plate is connected to the cooling channel inside the liquid-cooled plate 311. The liquid-cooled plate 311, the two front end plates 3121, the two rear end plates 3131, the two liquid-cooled side plates, and the intermediate liquid-cooled plate together form two parallel liquid-cooled chambers 314 to accommodate the installation of the two sets of battery cell groups 32, forming a three-dimensional heat dissipation liquid-cooled structure.

[0088] In some embodiments, the two side walls and the rear wall of the battery module mounting cavity 21 are respectively provided with limiting slot structures 211 in the horizontal direction; the two ends of the liquid cooling plate 311 in the width direction extend to the outer side of the two sets of battery cells 32 in the width direction to form an insert structure 3111; the module tail fixing plate 3132 is fixed to the bottom of the rear side of the rear end plate 3131, and the rear side of the module tail fixing plate 3132 has a limiting strip 3133 corresponding to the insert structure 3111. During battery module 3 installation, the two insert structures 3111 of the liquid cooling plate 311 in the width direction are horizontally aligned and correspondingly slidably inserted into the two limiting slot structures 211 on opposite side walls of the battery module mounting cavity 21. The limiting strip 3133 at the rear of the battery module 3 is fitted into the limiting slot structure 211 on the rear side wall of the battery module mounting cavity 21, thus achieving accurate positioning of the battery module 3. The front fixing plate 3122 of the module has positioning holes, and the front fixing plate 3122 of the module is fastened to the battery frame 2 by the positioning bolts 3125 passing through the positioning holes, thus achieving stable installation of the battery module 3. Even if the battery frame 2 shakes, it will not affect the positioning stability of the battery module 3.

[0089] In some embodiments, the system further includes a high-voltage connection bus assembly 7; the high-voltage connection bus assembly 7 includes a plurality of high-voltage connection buses 71.

[0090] The high and low voltage circuit boards 33 of the multiple battery modules 3 are electrically connected to each other and to the electrical control box 5 through a high voltage connector 71.

[0091] The function of the high voltage connection busbar 71 is to connect the high and low voltage circuit boards 33 of multiple battery modules 3 in series and parallel, and then connect their positive and negative terminals to the electrical control box 5. By combining different numbers of battery modules 3, different standardized power capacities can be designed to meet greater power demands.

[0092] In some embodiments, the high-voltage connection bar 71 is a shaped metal plate formed by bending a strip of metal plate, and its outer wall is covered with an insulating layer.

[0093] The high-voltage connector 71 is designed as a shaped metal plate, which improves the ability to withstand high voltage and conduct high current, and also facilitates system assembly and improves the efficiency of maintenance, replacement and disassembly of battery module 3.

[0094] In some embodiments, the high voltage connector assembly 7 further includes a plurality of high voltage bases 72; each front end plate assembly 312 is detachably connected to a high voltage base 72; a fastener 722 for fastening the connection end of the high voltage connector 71 to the output end of the high and low voltage circuit board 33 is installed in the fixing hole 721 on the front end face of the high voltage base 72.

[0095] The high-voltage base 72 serves as an insulating connector, providing an installation base for the electrical connection between the high-voltage connector 71 and the output terminals of the high and low voltage circuit boards 33. The fixing holes 721 of the high-voltage base 72 are located on its front face, allowing maintenance personnel to directly install and remove the fasteners 722 from the front after opening the sealing door 12, making maintenance more convenient and efficient.

[0096] Specifically, fastener 722 is a bolt.

[0097] Specifically, each front-end board 3121 has a socket at its top, and the high-voltage base 72 has a plug 723 at its bottom. The plug 723 at the bottom of the high-voltage base 72 can be snapped into the socket of the front-end board 3121 to facilitate a detachable vertical connection between the high-voltage base 72 and the front-end board 3121. The high and low voltage circuit boards 33 have a lead-out terminal corresponding to the high-voltage base 72 on each front-end board 3121; the lead-out terminals 331 of the high and low voltage circuit boards 33 are connected to the connection terminals of the high-voltage connection bus 71 and are fastened to the front end face of the high-voltage base 72 by fasteners 722.

[0098] Specifically, a module handle 3124 is fixedly installed on the front side of each front panel 3121.

[0099] In some embodiments, multiple BMS battery management devices 6 are arranged between the corresponding sealing door 12 and the corresponding battery module 3, and are electrically connected to the corresponding high and low voltage circuit boards 33 through low voltage wiring harness 63.

[0100] The sampling harness in the high and low voltage circuits collects information such as the voltage and temperature of the battery cells, and then transmits it to the BMS through the low voltage harness 63. In this way, the BMS can collect the battery cell information and perform real-time monitoring and management. The BMS battery management device 6 is directly arranged in front of each corresponding battery module 3, which is convenient for disassembly and assembly and also reduces the length of the low voltage harness 63.

[0101] Specifically, the BMS battery management device 6 includes a BMS bracket 61 and a BMS 62; the BMS 62 is fixed on the BMS bracket 61, and one end of the BMS 62 is connected to the low-voltage wiring harness 63, while the other end of the low-voltage wiring harness 63 is inserted into the front of the corresponding high and low voltage circuit boards 33; the BMS bracket 61 is fixed to the front of the battery rack 2 and the corresponding entrance and exit of the battery module mounting cavity 21 by screws and bracket mounting holes 611.

[0102] In some embodiments, there are two or more sets of battery racks 2, which are arranged side by side along the width of the sealed cabinet 1; the high and low voltage circuit boards 33 of the battery modules 3 on adjacent sets of battery racks 2 are electrically connected.

[0103] Two or more battery racks 2 are arranged side by side along the width of the sealed cabinet 1 to further increase the capacity of the battery cells in the system, thereby improving the energy storage capacity of the system.

[0104] Specifically, the electrical control box 5 is fixedly installed on the top of one of the battery racks 2.

[0105] In some embodiments, the system further includes a fire-fighting piping assembly 8, which includes a main fire-fighting pipe 81 and multiple branch fire-fighting pipes 82. The main fire-fighting pipe 81 is disposed on the battery rack 2 along the height direction of the battery rack 2 and corresponds to the side of the battery module mounting cavity 21. One end of the main fire-fighting pipe 81 penetrates the outer wall of the sealed cabinet 1 and extends to the outside of the sealed cabinet 1. The multiple branch fire-fighting pipes 82 are arranged one-to-one with multiple battery module mounting cavities 21, and one end of each branch fire-fighting pipe 82 is connected to and communicates with the main fire-fighting pipe 81, while the other end extends into the corresponding battery module mounting cavity 21.

[0106] The main fire hose 81 is arranged along the battery rack 2, effectively utilizing the battery rack space. Each battery module mounting cavity 21 is equipped with a fire hose branch 82. In the event of thermal runaway of a battery module, it can be directly and effectively sprayed with fire extinguishing agent, achieving direct fire suppression of the battery cells, resulting in higher fire suppression efficiency and better safety. The fire hose assembly 8 can be assembled before module assembly. In this embodiment, the fire hose assembly 8 connects to external fire-fighting equipment to provide fire extinguishing agent to the battery system, providing ample space for the installation and arrangement of the battery modules within the system.

[0107] Specifically, there are two sets of battery racks 2, which are welded and fixed or connected as a whole; a gap is reserved between the two sets of battery racks 2, and the fire main pipe 81 is arranged in the gap between the two sets of battery racks 2; a fire branch pipe 82 is connected to the fire main pipe 81 corresponding to each layer of battery module mounting cavity 21; the spray end of the fire branch pipe 82 extends to the top of the battery module mounting cavity 21, so as to spray fire extinguishing towards the top of the battery module 3 inserted in the battery module mounting cavity 21.

[0108] Specifically, each liquid cooling plate 311 has a connector installed at its inlet 3112 and outlet 3113; the cooling pipe assembly 4 includes multiple connecting pipes that can be detachably connected and communicated with the connectors of the liquid cooling plate 311.

[0109] In some embodiments, the connectors of the liquid inlet 3112 and liquid outlet 3113 of each liquid-cooled pull-out bracket 31 are connected in series and parallel via connecting pipes. The liquid inlet 41 and liquid return 42 of the cooling pipe assembly 4 both penetrate the outer wall of the sealing door 12 of the sealed cabinet 1 and extend to the outside of the sealing door 12. The liquid inlet 41 and liquid return 42 of the cooling pipe assembly 4 are both equipped with cooling water nozzles for connecting to external cold liquid circulation supply equipment. The power plug 51 is installed on the outer wall of the sealing door 12. One end of the fire main pipe 81 penetrates the outer wall of the sealing door 12 of the sealed cabinet 1 and extends to the outside of the sealing door 12. One end of the fire main pipe 81 is equipped with a fire nozzle 811 for connecting fire-fighting equipment. The fire nozzle 811, cooling water nozzles, and power plug 51 are all arranged on the outside of the sealing door 12 to facilitate the combined arrangement of the sealed cabinet 1 of the battery system.

[0110] Specifically, during module assembly, the insert structure 3111 on the side of the battery module 3 is first aligned with the limiting slot structure 211 on the inner side of the battery module mounting cavity 21 of the battery rack 2. The limiting slot structure 211 guides the insert structure 3111, pushing the battery module 3 all the way to the bottom. When the limiting strip 3133 of the battery module 3 fits into the limiting slot structure 211 on the rear side wall of the battery module mounting cavity 21, the module is assembled in place. Then, the front fixing plate 3122 of the module is fastened to the battery rack 2 using positioning bolts 3125, thereby fixing the battery module 3. After the module is fixed, the high-voltage connection bus 71 is fixed to the corresponding high-voltage base 72 using bolts, with the fasteners 722 fixing the high-voltage connection bus 71 facing the operator for easy operation. Then, the connectors at the inlet 3112 and outlet 3113 of the cooling pipe assembly 4 connecting to the liquid cooling plate 311 are fixed. Next, assemble the BMS bracket 61 and BMS 62, and connect the low-voltage wiring harness 63, etc. After the battery cabinet is fully assembled, the sealing door 12 can be installed. Align and attach the cabinet door sealing ring 121 to the sealing surface of the sealing door 12. Then, align and insert the cooling water nozzle, fire pipe nozzle 811 and power plug 51 into the water nozzle installation port 123, fire pipe installation port 124 and power plug installation port 125 opened on the sealing door 12, respectively, and fix them with bolts and seal them. When repairing or replacing the battery system, follow the reverse order of assembly: first, remove the bolts of the sealing door 12, then remove the sealing door 12, then disconnect the low-voltage wiring harness 63 of the BMS62, then remove the BMS bracket 61 and BMS62, then disconnect and remove the corresponding high-voltage connector 71, disconnect the connecting pipe connected to the battery module 3 at the corresponding position, then loosen the fixing bolts of the front mounting plate 3122 of the corresponding battery module 3, and pull out the battery module 3 as a whole through the module handle 3124. After replacing it with a new battery module 3, proceed with the installation steps.

[0111] Specifically, depending on the specific needs of the ship project, the sealed cabinet 1 of one or more battery systems can be directly assembled onto the battery compartment or deck to fix the battery system in place.

[0112] like Figure 17 As shown, another embodiment of the present invention provides a containerized power supply, including multiple multi-module battery systems and a container 9; multiple battery systems are arranged horizontally in parallel in the container 9.

[0113] The battery system of this invention can be used as a standard unit and combined according to actual needs to meet different power requirements. Multiple sealed battery system cabinets can be arranged side by side in a container to form a high-capacity containerized power source.

[0114] Battery cabinets with independent battery systems can serve as standard units, and different power requirements can be met by combining them according to actual needs. For example, multiple battery cabinets can be combined to form a high-capacity containerized power supply.

[0115] Specifically, two rows of battery systems are arranged side by side along the width of container 9; each row of battery systems includes multiple battery systems; the multiple battery systems in each row are arranged sequentially along the length of container 9; the sealing door 12 of the sealing cabinet 1 of each battery system corresponds to the corresponding side door of container 9; this facilitates the series and parallel combination of multiple battery systems to form a containerized power supply.

[0116] Compared to single-module battery packs, this invention reduces component redundancy, improving overall battery capacity while simplifying component types and lowering design costs. By integrating multiple modules as basic units, it achieves independent, high-capacity battery systems, increasing energy density and enabling module-level maintenance and replacement. Standardized design ensures consistent module-integrated battery system dimensions, adapting to various application scenarios. The required system capacity is achieved through modular stacking. Integrated liquid cooling plates provide efficient heat dissipation and precise temperature control, adapting to complex environments. The battery system meets IPX7 protection standards, suitable for applications such as deck placement. This highly integrated system, with module-level maintenance and replacement, meets compliant usage requirements. Different module combinations allow for varying standardized capacity designs, and series combinations can accommodate larger capacity demands. It also enables fire suppression within the battery cabinet, with fire-fighting points aligned with modules for direct cell fire suppression. Limiting and bolt-fixing methods facilitate rapid module installation and replacement. The entire battery system is shaped like a standard rectangular cabinet, with external interfaces such as a power plug 51, a cooling water nozzle, and a fire hose 811, which can enable the battery system to connect to the outside world and to connect multiple battery systems.

[0117] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0118] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-module battery system, characterized by, include: A sealed cabinet (1) has an open front (11) and a detachable and sealed door (12) is installed at the open front (11). A battery rack (2) is fixedly installed inside the sealed cabinet (1). The battery rack (2) has multiple battery module mounting cavities (21) arranged sequentially along the height direction. Multiple battery modules (3) are provided, each battery module (3) including a liquid-cooled pull-out frame (31), a cell assembly (32), and a high- and low-voltage circuit board (33); the liquid-cooled pull-out frame (31) can pass through the opening (11) and slide in and out of the battery module mounting cavity (21) along the front-to-back direction of the sealed cabinet (1); the liquid-cooled pull-out frame (31) has a liquid-cooling chamber (314) inside, and the cell assembly (32) is installed in the liquid-cooling chamber (314); the high- and low-voltage circuit board (33) is located at the top of the cell assembly (32) and electrically connected to the cell assembly (32); each liquid-cooled pull-out frame (31) is provided with an inlet (3112) and an outlet (3113) that connect to its internal cooling channel; A cooling pipe assembly (4) is arranged inside the battery rack (2) and connects the inlet (3112) and outlet (3113) of each liquid-cooled pull-out rack (31) to supply coolant; the inlet end (41) and return end (42) of the cooling pipe assembly (4) both extend through the outer wall of the sealed cabinet (1) to the outside of the sealed cabinet (1); An electrical control box (5) is located inside the sealed cabinet (1) and is electrically connected to the high and low voltage circuit boards (33) of each battery module (3); a power plug (51) electrically connected to the electrical control box (5) is installed on the outer wall of the sealed cabinet (1); Multiple BMS battery management devices (6); the housings of the multiple BMS battery management devices (6) are detachably mounted on the battery rack (2) and are electrically connected to the high and low voltage circuit boards (33) of the multiple battery modules (3) respectively.

2. The multi-module battery system of claim 1, wherein, The liquid-cooled pull-out bracket (31) includes a liquid-cooled plate (311), a front-end plate assembly (312), and a rear-end plate assembly (313); the front-end plate assembly (312) and the rear-end plate assembly (313) are opposite each other and are vertically arranged on the front and rear parts of the upper surface of the liquid-cooled plate (311); the area above the liquid-cooled plate (311) corresponding to the area between the front-end plate assembly (312) and the rear-end plate assembly (313) constitutes a liquid-cooled chamber (314) for installing the battery cell assembly (32); the battery cell assembly (32) is located in the liquid-cooled chamber (314) and fixed on the liquid-cooled plate (311); The battery module mounting cavity (21) is provided with a limiting slot structure (211), and the outer periphery of the liquid cooling plate (311) is formed with a strip structure (3111) that can be adapted to the limiting slot structure (211) to position the liquid cooling pull-out bracket (31). The liquid cooling plate (311) is provided with a cooling channel, and the front of the liquid cooling plate (311) is provided with an inlet (3112) and an outlet (3113) that connect to the cooling channel; the cooling pipe assembly (4) is detachably connected to and connects to the inlet (3112) and outlet (3113) of the liquid cooling plate (311) to supply coolant.

3. The multi-module battery system of claim 2, wherein, There are two or more battery cell groups (32), and the two or more battery cell groups (32) are arranged side by side along the width direction of the liquid cooling plate (311); the high and low voltage circuit board (33) is located on the top of the two or more battery cell groups (32) and is electrically connected to the two or more battery cell groups (32).

4. The multi-module battery system of claim 3, wherein, It also includes a high-voltage connection busbar assembly (7); the high-voltage connection busbar assembly (7) includes a plurality of high-voltage connection busbars (71); The high and low voltage circuit boards (33) of the multiple battery modules (3) are electrically connected to each other and to the electrical control box (5) via the high voltage connection bus (71).

5. The multi-module battery system of claim 4, wherein, The high-voltage connection bar (71) is a shaped metal plate formed by bending a strip of metal plate, and its outer wall is covered with an insulating layer.

6. The multi-module battery system of claim 4, wherein, The high voltage connector assembly (7) also includes multiple high voltage bases (72); each of the front end plate assemblies (312) is detachably connected to the high voltage base (72); the fixing hole (721) on the front end face of the high voltage base (72) is equipped with a fastener (722) for fastening the connection end of the high voltage connector (71) to the output end of the high and low voltage circuit board (33).

7. The multi-module battery system of claim 1, wherein, Multiple BMS battery management devices (6) are arranged between the sealing door (12) and the corresponding battery module (3), and are electrically connected to the corresponding high and low voltage circuit boards (33) through low voltage wiring harness (63).

8. The multi-module battery system according to claim 1, characterized in that, There are two or more sets of battery racks (2), and the two or more sets of battery racks (2) are arranged side by side along the width direction of the sealed cabinet (1); the high and low voltage circuit boards (33) of the battery modules (3) on the adjacent sets of battery racks (2) are electrically connected.

9. The multi-module battery system of claim 1, wherein, It also includes a fire-fighting piping assembly (8), which includes a fire-fighting main pipe (81) and multiple fire-fighting branch pipes (82); the fire-fighting main pipe (81) is arranged on the battery rack (2) along the height direction of the battery rack (2) and corresponds to the side of the battery module mounting cavity (21); one end of the fire-fighting main pipe (81) penetrates through the outer wall of the sealed cabinet (1) and extends to the outside of the sealed cabinet (1); the multiple fire-fighting branch pipes (82) are arranged one-to-one with multiple battery module mounting cavities (21), one end of each of the multiple fire-fighting branch pipes (82) is connected to and communicates with the fire-fighting main pipe (81), and the other end extends into the corresponding battery module mounting cavity (21).

10. A packaged power supply characterized by, It includes a plurality of multi-module battery systems as described in any one of claims 1-9 and a container (9); the container (9) contains a plurality of battery systems arranged horizontally side by side.

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