An energy storage battery module

Abstract

This utility model discloses an energy storage battery assembly, comprising a housing, a cell module, and a BMS module. The housing is a flip-top lead-acid battery casing, and the cell module and BMS module are installed inside the housing. The housing includes a cylindrical receiving cavity with an upper opening and a top cover disposed at the opening. The cell module is disposed inside the cylindrical receiving cavity, and the BMS module is disposed between the cell module and the top cover, with the BMS module positioned above the cell module. A heat insulation sheet is disposed between the cell module and the BMS support. The energy storage battery assembly of this application uses a lead-acid battery casing, which, compared to existing lithium batteries, allows for free assembly of its components, providing greater flexibility during use. This design prevents the cell and top cover from compressing the BMS module, thereby improving the overall stability and safety of the energy storage battery assembly.

Description

Technical Field

[0001] This utility model relates to an energy storage battery module, belonging to the field of new energy battery technology. Background Technology

[0002] While lead-acid batteries are widely used, they suffer from significant drawbacks such as short cycle life, low recycling value, and substantial environmental pollution, making it difficult to meet the market's urgent demand for long-life, high-recycling-value, and environmentally friendly energy storage solutions. Although lithium-ion batteries offer advantages in performance and environmental friendliness, their physical specifications and interfaces make them difficult to directly replace existing lead-acid batteries in various applications. Therefore, there is an urgent need for an innovative solution that can adapt to the physical structure of traditional lead-acid battery casings while integrating lithium-ion cells, achieving a balance of physical compatibility, high performance, low environmental risk, and safe and reliable protection for the cells. Utility Model Content

[0003] To address the problems mentioned above in the background art, this utility model provides an energy storage battery assembly.

[0004] The technical solution to achieve the purpose of this utility model is: an energy storage battery assembly, including a housing, a cell module, and a BMS module. The housing is a flip-top lead-acid battery shell, and the cell module and BMS module are installed inside the housing. The housing includes a cylindrical receiving cavity with an upper opening and an upper cover disposed at the opening. The cell module is disposed inside the cylindrical receiving cavity, and the BMS module is disposed between the cell module and the upper cover. In this structure, the BMS module is disposed above the cell module. A heat insulation sheet is disposed between the cell module and the BMS support.

[0005] The energy storage battery assembly using this application employs a lead-acid battery casing. When necessary, the internal components can be hollowed out to house the lithium battery cell module and BMS module. Compared to existing lead-acid batteries, it features superior energy storage performance, longer lifespan, and better recyclability. Compared to existing lithium batteries, its components can be freely assembled, offering greater flexibility during use. Furthermore, this design prevents the cells and top cover from compressing the BMS module, thereby improving the overall stability and safety of the energy storage battery assembly.

[0006] Further or optionally, a rigid BMS bracket is provided between the BMS module and the cell module. The BMS bracket is flush with the upper edge of the cell module and its edge fits against the inner edge of the columnar accommodating cavity. The BMS module is fixed to the BMS bracket by copper busbars, and the top cover is fixedly connected to the BMS bracket. This bracket design can further isolate the cell module and the BMS module, allowing the BMS module to be directly fixed on the bracket, providing the BMS with an independent accommodating space, while protecting the safety and shock resistance of the BMS module.

[0007] Further or alternatively, in order to prevent the heat generated by the battery module from affecting the performance of the BMS, and further or alternatively, in order to prevent the casing from being impacted and affecting the safety of the battery module, a buffer component is provided between the battery module and the lower surface of the cylindrical accommodating cavity.

[0008] Further or optionally, the buffer component is an epoxy board, using an epoxy resin laminate as a buffer isolation component, which has both high rigidity support and electrical insulation properties. This structure is used to prevent the heat of the BMS from being transferred to the battery cell; at the same time, it can also effectively block the spread of the runaway when either one is out of control; in addition, this structure can also effectively absorb mechanical shock and block the risk of short circuit between battery cells, while being resistant to temperature fluctuations and chemical corrosion, thus improving the overall structural safety and lifespan.

[0009] Further, or optionally, a fixing screw is also included. An embedded nut is provided at the bottom of the cylindrical accommodating cavity, and a corresponding screw hole is provided on the BMS bracket at a corresponding position. The BMS module is fixed to the cylindrical accommodating cavity by the fixing nut. This solution achieves rigid anchoring between the BMS module and the accommodating cavity by pre-embedding the embedded nut at the bottom of the cylindrical accommodating cavity and providing a screw hole at a corresponding position on the BMS bracket, in conjunction with the fixing screw for tightening. This structure forms a three-dimensional mechanical constraint, effectively suppressing the risk of displacement under vehicle vibration or impact; the embedded nut design avoids welding thermal deformation, ensures thread accuracy, and enables tool-free rapid assembly; simultaneously, the detachable screw connection supports independent maintenance of the BMS module, avoiding overall replacement and significantly reducing subsequent maintenance costs.

[0010] Further or optionally, the top cover is provided with positive and negative terminals, and the BMS module is provided with copper busbars for current diversion. The copper busbars are connected to the positive and negative terminals of the top cover respectively. In this solution, by directly connecting the copper busbars of the BMS module to the positive and negative terminals of the top cover, the current path is minimized, significantly reducing impedance heat loss. The fully insulated copper busbars and rigid locking structure form an arc suppression barrier, simultaneously improving electrical safety and mechanical stability. The modular pre-assembly and guide positioning design greatly optimizes the assembly efficiency of the production line, providing a highly reliable and low-maintenance electrical link solution for the battery system.

[0011] Further or alternatively, in order to prevent the fire from spreading due to the loss of control of the battery cell module or BMS module, an aerogel is provided between the BMS module, the battery cell module and the top cover.

[0012] Further or alternatively, a handle is provided on the top cover to facilitate moving the energy storage battery assembly during use.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] (1) The energy storage battery assembly of this application adopts a lead-acid battery shell, which can be hollowed out when needed to put the lithium battery cell module and BMS module into the shell. Compared with the existing lead-acid battery, it has the characteristics of friendly energy storage performance, long life and good recyclability. Compared with the existing lithium battery, its components can be freely assembled, and it has greater flexibility in use. This design can prevent the cells and the top cover from squeezing the BMS module, thereby improving the overall stability and safety of the energy storage battery assembly.

[0015] (2) In this application, a rigid BMS bracket is provided between the BMS module and the cell module of an energy storage battery assembly, which allows the BMS module to be directly fixed on the bracket, providing the BMS with independent storage space, while protecting the safety and shock resistance of the BMS module.

[0016] (3) A buffer component is provided between the cell module of the energy storage battery module of this application and the lower surface of the inner wall of the columnar accommodating cavity, which can effectively prevent the casing from being impacted and affecting the safety of the cell module.

[0017] (4) In this application, the buffer component between the cell module and the BMS bracket of the energy storage battery module is an epoxy board. This structure can effectively absorb mechanical shock and block the risk of short circuit between cells, while also being resistant to temperature fluctuations and chemical corrosion, thus improving the overall structural safety and lifespan.

[0018] (5) The BMS bracket of the energy storage battery module cell module of this application is fixed to the housing by bolts and nuts, which realizes the rigid anchoring of the BMS module and the housing cavity and the structure forms a three-dimensional mechanical constraint, effectively suppressing the displacement risk under vehicle vibration or impact. The embedded nut design avoids welding thermal deformation, ensures thread accuracy, and realizes zero-tool rapid assembly. At the same time, the screw detachable connection supports independent maintenance of the BMS module, avoids overall replacement, and significantly reduces the later maintenance cost.

[0019] (6) The top cover of the cell module of the energy storage battery module of this application is provided with positive and negative interfaces corresponding to the positive and negative busbars of the BMS management module, so as to achieve the shortest current path. The modular pre-assembly and guide positioning design greatly optimizes the assembly efficiency of the production line and provides a highly reliable and low-maintenance electrical link solution for the battery system.

[0020] (7) An aerogel is provided between the BMS module of the energy storage battery module cell module and the top cover in this application, which can prevent the cell module or BMS module from going out of control and causing the fire to spread.

[0021] (8) A handle is provided on the top cover of the cell module of the energy storage battery component of this application, which is convenient for moving during use. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] The labels in the attached diagram are:

[0025] 1. Housing, 11. Columnar accommodating cavity, 12. Top cover, 121. Positive and negative terminals, 122. Handle, 2. Battery cell module, 21. BMS bracket, 3. BMS module, 31. Copper busbar. Detailed Implementation

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0031] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0032] (Example 1)

[0033] See Figure 1 An energy storage battery assembly includes a housing 1, a cell module 2, and a BMS module 3. The housing 1 is a flip-top lead-acid battery casing, and the cell module 2 and BMS module 3 are installed inside the housing 1. The housing 1 includes a cylindrical receiving cavity 11 with an upper opening and an upper cover 12 disposed at the opening. The cell module 2 is disposed inside the cylindrical receiving cavity 11, and the BMS module 3 is disposed between the cell module 2 and the upper cover 12. A heat insulation sheet is disposed between the cell module 2 and the BMS support 21, and the heat insulation sheet completely covers the contact surface between the cell module 2 and the BMS support 21.

[0034] In the figure, the housing 1 is a square prism with a cuboid cavity 11 inside. During installation, the battery cell module 2 is placed in the cavity 11, and then the BMS module 3 is installed on top of the battery cell module 2. Finally, the top cover 12 is put on and fixed to complete the assembly.

[0035] In the diagram, considering that the specifications of the battery cell module 2 and the accommodating cavity 11 may be inconsistent, a BMS bracket 21 can be fabricated to fix the battery cell module 2 and the BMS module. Specifically, a rigid BMS bracket 21 is provided between the BMS module 3 and the battery cell module 2. The BMS bracket 21 is flush with the upper edge of the battery cell module 2 and its edge is attached to the inner edge of the columnar accommodating cavity 11. The BMS module 3 is fixed to the BMS bracket 21 by a copper busbar 31, and the upper cover 12 is fixedly connected to the BMS bracket 21. In this structure, the BMS bracket 21 is attached to the side wall of the accommodating cavity 11, and corresponding fixing positions for the battery cell module 2 and the BMS module 3 are pre-set on the BMS bracket 21, which can further fix the two.

[0036] As an extension of this application, an epoxy board buffer component is provided between the battery cell module 2 and the lower surface of the cylindrical accommodating cavity 11. In actual settings, a polyimide board, a glass fiber reinforced board, or a ceramicized silicone rubber board can be used as a substitute.

[0037] It also includes a fixing screw, and the bottom of the cylindrical receiving cavity 11 is provided with an embedded nut. The BMS bracket 21 is provided with a screw hole corresponding to the embedded nut at a corresponding position. The BMS module 3 is fixed to the cylindrical receiving cavity 11 by fixing the nut.

[0038] The upper cover 12 is provided with positive and negative terminals 121, and the BMS module 3 is provided with copper busbars 31 for current diversion. The copper busbars 31 are respectively connected to the positive and negative terminals 121 of the upper cover 12.

[0039] Aerogel is provided between the BMS module 3, the battery cell module 2 and the top cover 12.

[0040] The top cover 12 is provided with handles 122. The handles 122 in the figure above are located on the left and right sides of the rectangular top cover and are obtained by hollowing out from both sides. The production process adopts an integrated casting process, which can reduce the process flow.

[0041] In actual design, the handle 122 can also be set on the top of the cover 12, adopting a single-handle screw-on structure.

[0042] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy storage battery assembly, characterized by: The device includes a housing (1), a battery cell module (2), and a BMS module (3). The housing (1) is a flip-top lead-acid battery casing. The battery cell module (2) and the BMS module (3) are installed inside the housing (1). The housing (1) includes a cylindrical cavity (11) with an upper opening and a top cover (12) disposed at the opening. The battery cell module (2) is disposed inside the cylindrical cavity (11). The BMS module (3) is disposed between the battery cell module (2) and the top cover (12). A heat insulation sheet is disposed between the battery cell module (2) and the BMS bracket (21).

2. An energy storage battery assembly according to claim 1, wherein: A rigid BMS bracket (21) is provided between the BMS module (3) and the cell module (2). The upper edge of the BMS bracket (21) is flush with the upper edge of the cell module (2) and the edge is attached to the inner edge of the columnar accommodating cavity (11). The BMS module (3) is fixed on the BMS bracket (21) by a copper busbar (31). The upper cover (12) is fixedly connected to the BMS bracket (21).

3. An energy storage battery assembly according to claim 1, wherein: A buffer component is provided between the battery cell module (2) and the lower surface of the cylindrical accommodating cavity (11).

4. An energy storage battery assembly according to claim 3, wherein The buffer component is an epoxy board.

5. An energy storage battery assembly according to claim 1, wherein: It also includes a fixing screw, and the bottom of the cylindrical receiving cavity (11) is provided with an embedded nut. The BMS bracket (21) is provided with a screw hole corresponding to the embedded nut at the corresponding position. The BMS module (3) is fixed to the cylindrical receiving cavity (11) by fixing the nut.

6. An energy storage battery assembly according to claim 1, wherein: The upper cover (12) is provided with positive and negative terminals (121), and the BMS module (3) is provided with copper busbars (31) for guiding current at the positive and negative terminals. The copper busbars (31) are respectively connected to the positive and negative terminals (121) of the upper cover (12).

7. An energy storage battery assembly according to claim 1, wherein: Aerogel is provided between the BMS module (3), the battery cell module (2) and the top cover (12).

8. An energy storage battery assembly according to claim 1, wherein: The top cover (12) is provided with a handle (122).

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