Modularized energy storage battery Pack

Abstract

The utility model relates to the technical field of a battery pack, in particular to a modularized energy storage battery pack, which comprises a battery module, a bottom plate for supporting the battery module and a protective cover buckled on the bottom plate, and the battery module is arranged in the protective cover; a liquid cooling heat dissipation system used for cooling and heat dissipation is integrated on the bottom plate, and a battery management system and a fire extinguishing system are integrated on a side shell of the protective cover; the battery module comprises a plurality of groups of battery modules arranged in pairs, and each pair of battery modules is connected through a male die. Through the modular design, the battery pack, the battery management system, the fire extinguishing system and the liquid cooling heat dissipation system are integrated, and the heat dissipation efficiency, the assembly and maintenance efficiency and the space utilization rate of the battery pack are improved. The integrated battery management system and the fire extinguishing system ensure efficient management and safety protection of the battery, and are suitable for large-scale energy storage application, in addition, by optimizing the layout of the battery module and the male mold, the space utilization rate is improved, and the structure is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a modular energy storage battery pack. Background Art

[0002] Large-capacity battery cells have the advantages of easy modularization and management. After modularization, they have higher energy density than small-capacity batteries and are more popular in the battery energy storage industry.

[0003] Existing energy storage battery packs have deficiencies in structural design, heat dissipation efficiency, space utilization, and safety performance, making it difficult to meet the requirements of high-efficiency and high-safety energy storage systems. In particular, for large-scale energy storage applications, existing technologies for heat dissipation management systems and space utilization designs are still imperfect, including the following technical shortcomings:

[0004] a. The structure of the integrated assembly of battery cells is unreasonable. When a problem occurs with a single battery cell in the energy storage battery, it is cumbersome to disassemble and assemble. Especially when a problem occurs with the entire battery integration, the entire cell can only be discarded, resulting in waste.

[0005] b. The battery lacks heat dissipation function. When the energy storage battery generates heat during the charging and discharging process, it is generally dissipated through the cooling fan installed on the equipment. The cooling effect is poor, and the internal electrical components of the energy storage battery are easily damaged due to overheating, which reduces the service life.

[0006] c. When a fire is caused by overheating or short circuit inside the energy storage system, if it cannot be discovered and extinguished in time, the fire will easily spread and expand, causing greater losses.

[0007] Based on the problems in the prior art, the utility model provides a modular energy storage battery pack. Utility Model Content

[0008] The purpose of this utility model is to provide a modular energy storage battery pack to solve the technical problem that the energy storage battery pack in the prior art has deficiencies in structural design, heat dissipation efficiency, space utilization and safety performance, and is difficult to meet the requirements of high-efficiency and high-safety energy storage systems.

[0009] The technical solution of the utility model is: a modular energy storage battery pack, comprising a battery module, a base plate supporting the battery module, and a protective cover fastened to the base plate, wherein the battery module is placed in the protective cover;

[0010] A liquid cooling system for cooling and dissipating heat is integrated on the bottom plate, and a battery management system and a fire protection system are integrated on the side shell of the protective cover;

[0011] The battery module includes multiple groups of battery modules arranged in pairs, each pair of battery modules is connected by a male mold, and multiple battery modules are assembled together in parallel.

[0012] Preferably, the protective cover is rectangular, with a cavity inside and an opening facing downwards and buckled on the bottom plate. Limiting members and movable connecting members are provided around the bottom plate to connect and fix the protective cover.

[0013] Preferably, the liquid cooling system includes a heat dissipation pipeline arranged on the base plate, and the coolant enters through the liquid inlet of the heat dissipation pipeline and flows out through the liquid outlet of the heat dissipation pipeline to cool the battery module.

[0014] Preferably, the area panel where the battery management system is arranged on the protective cover is provided with the positive and negative electrode interfaces of the battery, a communication interface, and a fire valve; the battery management system as a whole is used to monitor and manage the battery charging and discharging process, the fire protection system is used to monitor fires, and is provided with an explosion-proof valve.

[0015] Preferably, the limiting member is configured as a stop column, and the movable connecting member adopts an L-shaped corner gasket matching the bolt and nut.

[0016] Preferably, each battery module is composed of multiple strings of battery cells, which are interconnected by aluminum palladium.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) The utility model realizes a 1-in-1 multi-string structure by connecting multiple battery modules through several common modules, thereby optimizing the layout of the battery modules and improving the internal space utilization of the battery pack. The overall structure is more compact, which helps to increase the market demand for high energy density energy storage.

[0019] (2) This utility model adopts a modular design, integrating a liquid cooling system on the base plate below the battery module and integrating a battery management system and fire protection system on the protective cover panel, thereby improving the heat dissipation efficiency, assembly and maintenance efficiency, and space utilization of the battery pack. The integrated battery management system and fire protection system ensure efficient management and safety protection of the battery, and are suitable for large-scale energy storage applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is an overall three-dimensional schematic diagram of the modular energy storage battery pack of the present invention;

[0022] Figure 2 This is a front view of the modular energy storage battery pack of the present invention;

[0023] Figure 3 This is a left side view of the modular energy storage battery pack of the present invention;

[0024] Figure 4 This is a top view of the modular energy storage battery pack of the present invention;

[0025] Figure 5 This is a schematic diagram of the battery module of the present invention being assembled on a base plate;

[0026] Figure 6 This is a schematic structural diagram of a single battery module according to the present invention;

[0027] Figure 7 This is a schematic diagram of the back side of the panel of the integrated battery management system and fire protection system of the present invention;

[0028] Figure 8 This is a schematic diagram of the liquid cooling and heat dissipation system of the present invention integrated into the base plate;

[0029] Among them: 1. Battery module; 2. Base plate; 3. Protective cover; 4. Heat dissipation pipe; 5. Liquid inlet; 6. Liquid outlet; 7. Limiting part; 8. Movable connection part; 9. Battery management system; 10. Fire protection system; 11. Battery module; 12. Male mold; 13. Battery cell; 14. Aluminum palladium. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0031] like Figure 1 As shown, a modular energy storage battery pack includes a base plate 2 and a protective cover 3 buckled on the base plate 2, a battery module 1, and a battery pack. Figure 7 The battery module 1 is integrated and assembled on the base plate 2 , and the battery module 1 is placed in the protective cover 3 .

[0032] The battery module 1 includes a plurality of battery modules 11 arranged in pairs. Each pair of battery modules 11 is connected by a male mold 12 , and the plurality of battery modules are assembled together in parallel.

[0033] like Figure 7 As shown, a four-battery module assembly diagram is provided, such as Figure 8 As shown, a structural diagram of a battery module 11 is provided. Each battery module 11 is composed of a series of battery cells 13, and the battery cells 13 are interconnected through aluminum palladium 14. Figure 7 The four battery modules 11 in the battery pack are connected in a 1-in-parallel and 5-in-series structure through two male molds 12, which optimizes the layout of the battery modules 11, improves the internal space utilization of the battery pack, and makes the overall structure more compact.

[0034] The protective cover 3 is rectangular, with a cavity inside and an opening facing downwards, which is buckled on the bottom plate 2. The shape and structure of the protective cover 3 refer to the attached diagram. Figure 2 , Attachment Figure 3 , Attachment Figure 4 The front view, left view and top view shown in FIG. 2 show that a limit member 7 and a movable connecting member 8 are provided around the bottom plate 2 to connect and fix the protective cover 3; Figure 1 The limiting member 7 is set as a stop column, and the movable connecting member 8 adopts an L-shaped corner gasket to match the bolt and nut.

[0035] The battery management system 9 and the fire protection system 10 are integrated on a plate on the same side of the protective cover 3, which is the front panel. Figure 1 Combined with attachment Figure 2 , the integrated module is set on the back side of the panel, refer to the attached Figure 5 The front panel houses the battery's positive and negative terminals, a communication port, and a fire valve. The battery management system 9 monitors and manages the battery's charging and discharging processes, ensuring safe operation. The fire protection system 10 monitors fires and features an explosion-proof valve to address potential fire hazards and enhance battery pack safety. The battery modules 11 and the battery management system 9 work closely together, minimizing the battery pack's footprint while maintaining high performance.

[0036] like Figure 6 As shown, a liquid cooling system is integrated on the base plate 2. The liquid cooling system includes a heat dissipation pipe 4 arranged on the base plate 2. The coolant enters the heat dissipation pipe 4 through the liquid inlet 5, absorbs the heat generated by the battery module 11, and flows out through the liquid outlet 6. The heat dissipation pipe 4 is made of high thermal conductivity material to ensure that the heat is quickly transferred to the coolant. The coolant circulates in the liquid cooling system and passes through an external cooling device (such as a cooler or heat exchanger, attached Figure 6 The battery pack is cooled (not shown) and then re-enters the heat dissipation pipeline 4 to achieve a cooling cycle, thereby ensuring that the overall temperature difference of the battery pack is within a controllable range.

[0037] In summary, the present invention provides a modular energy storage battery pack. Through a modular design, it integrates multiple battery packs and integrates a battery management system, fire protection system, and liquid cooling system around the battery packs, improving the battery pack's heat dissipation efficiency, assembly and maintenance efficiency, and space utilization. The integrated BMS and fire protection system ensure efficient battery management and safety protection, making it suitable for large-scale energy storage applications. Furthermore, by optimizing the layout of the battery modules and core molds, space utilization is improved, resulting in a more compact structure, which will contribute to the increasing market demand for high-energy-density energy storage.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A modular integrated energy storage battery pack, characterized in that: It comprises a battery module (1), a base plate (2) supporting the battery module, and a protective cover (3) buckled onto the base plate (2), wherein the battery module (1) is placed in the protective cover (3); A liquid cooling system for cooling and dissipating heat is integrated on the base plate (2), and a battery management system (9) and a fire protection system (10) are integrated on the side shell of the protective cover (3); The battery module (1) comprises a plurality of battery modules (11) arranged in pairs, each pair of the battery modules (11) being connected via a male mold (12), and the plurality of battery modules (11) are assembled together in parallel.

2. A modular energy storage battery pack according to claim 1, characterized in that: The protective cover (3) is rectangular, with a cavity inside and an opening facing downwards, which is buckled onto the bottom plate (2). Limiting members (7) and movable connecting members (8) are provided around the bottom plate (2) to connect and fix the protective cover (3).

3. A modular energy storage battery pack according to claim 2, characterized in that: The liquid cooling and heat dissipation system comprises a heat dissipation pipeline (4) arranged on a base plate (2); coolant enters through a liquid inlet (5) of the heat dissipation pipeline (4) and flows out through a liquid outlet (6) of the heat dissipation pipeline (4) to cool the battery module (1).

4. The modular energy storage battery pack according to claim 1, characterized in that: The battery management system (9) is arranged on the protective cover (3) and is provided with positive and negative electrode interfaces of the battery, a communication interface, and a fire valve. The battery management system (9) is used as a whole to monitor and manage the battery charging and discharging process, and the fire protection system (10) is used to monitor fires and is provided with an explosion-proof valve.

5. The modular energy storage battery pack according to claim 2, characterized in that: The limiting member (7) is configured as a stop column, and the movable connecting member (8) uses an L-shaped corner washer to match the bolt and nut.

6. The modular energy storage battery pack according to claim 1, characterized in that: Each battery module (11) is composed of multiple strings of battery cells (13), and the battery cells (13) are interconnected through aluminum palladium (14).

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