Energy storage battery pack and module end plate thereof

Abstract

According to the energy storage battery pack and the module end plate thereof provided by the utility model, the width of the end plate body is designed to be adaptive to the total width of at least two battery modules, so that the function integration of two traditional end plates is realized, and the space utilization rate is greatly improved. Meanwhile, a plurality of module fixing holes, an upper steel belt mounting structure, a lower steel belt mounting structure and an electrical element mounting area are integrated on a single end plate, so that the functionality and the practicability of the end plate are remarkably improved. According to the design, the overall structure of the energy storage battery pack is simplified, the assembly efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of energy storage batteries, in particular to an energy storage battery pack and a module end plate thereof. Background Art

[0002] Small metal end plates are a widely used component in the current energy storage industry. These end plates typically correspond to a single battery cell or a single row of modules, offering relatively limited functionality and resulting in low space utilization. Made of metal, these traditional end plates offer limited weight and cost advantages. Furthermore, they require the installation of multiple insulating components, which not only increases assembly complexity but also reduces production efficiency.

[0003] Traditional cell grouping with end plates is complex, further reducing production efficiency. More importantly, metal end plates can pose electrical safety risks, especially in high-voltage environments, posing a potential threat to the safety of energy storage systems. With the rapid development of energy storage technology and the growing market demand for more efficient and safer energy storage solutions, the limitations of traditional metal end plates are becoming increasingly prominent.

[0004] The industry has begun exploring new end plate designs. Some manufacturers are attempting to replace metal with composite materials to reduce weight and cost. However, these attempts often struggle to strike a balance between ensuring strength and reducing costs. Others are focusing on increasing the integration of end plates, attempting to integrate more functions, such as battery management systems (BMS) and fuses, onto a single end plate. However, these designs often face challenges in large-scale production due to their complex structures.

[0005] Furthermore, existing end plates often lack flexibility due to their inability to adapt to different battery module sizes. This results in frequent switching between end plates of varying sizes on the production line, increasing production costs and complexity. Furthermore, existing end plates often lack adequate heat dissipation, making them inadequate for high-power energy storage systems and limiting their performance.

[0006] Traditional end plate designs also have shortcomings in terms of maintainability. Due to their compact structure, internal components are often difficult to quickly replace or repair, which increases maintenance costs and reduces system reliability. Furthermore, traditional end plates have limited information tracking capabilities, making them unable to meet the full lifecycle management requirements of modern energy storage systems.

[0007] Therefore, developing a new, highly integrated module end plate to improve space utilization, enhance functionality, improve safety, and increase production efficiency while reducing cost and weight has become a key research direction in the energy storage industry. This new end plate must not only address the aforementioned issues but also possess good scalability and adaptability to meet the evolving needs of energy storage technology.

[0008] Therefore, it is urgent to invent an energy storage battery pack and its module end plate to effectively solve the above technical problems. Utility Model Content

[0009] The purpose of the utility model is to provide an energy storage battery pack and a module end plate thereof, so as to solve the problems of single function, low space utilization, and electrical safety hazards of the end plate in the prior art.

[0010] To achieve the above objectives, the present invention employs a technical solution: providing a module end plate for an energy storage battery pack, comprising an end plate body whose width is adapted to the combined width of at least two battery modules. The end plate body is provided with a plurality of module fixing holes for securing the battery modules. An upper steel strap mounting structure is provided on the upper portion of the end plate body, and a lower steel strap mounting structure is provided on the lower portion. The end plate body also includes an electrical component mounting area for mounting a battery management unit and a fuse.

[0011] Furthermore, an insulating protection cover mounting structure is also provided on the upper portion of the end plate body.

[0012] Specifically, a module traceability code area is also provided on the upper portion of the end plate body.

[0013] Furthermore, the end plate body further comprises a plurality of lifting holes, which are evenly distributed in the transverse direction of the end plate body.

[0014] Specifically, the upper steel belt installation structure includes an upper steel belt rounded corner installation groove, an upper steel belt limiting area and an upper steel belt limiting groove. The upper steel belt rounded corner installation groove is located on opposite sides of the end plate body, and the upper steel belt limiting area is located between the two upper steel belt rounded corner installation grooves and is connected to the upper steel belt rounded corner installation groove; the upper steel belt limiting groove is located below the upper steel belt rounded corner installation groove.

[0015] Furthermore, the area of the upper steel belt limiting region is larger than the area of the upper steel belt rounded corner installation groove.

[0016] Furthermore, the lower steel belt mounting structure includes a lower steel belt rounded corner mounting groove and a lower steel belt limiting area, the lower steel belt rounded corner mounting groove is located on opposite sides of the end plate body, and the lower steel belt limiting area is located between the two lower steel belt rounded corner mounting grooves and is connected to the lower steel belt rounded corner mounting groove; wherein the area of the lower steel belt limiting area is larger than the area of the lower steel belt rounded corner mounting groove.

[0017] Furthermore, the end plate body is provided with a side limiting strip, which is specifically arranged between the upper steel belt mounting structure and the lower steel belt mounting structure.

[0018] Specifically, the end plate body is further provided with a CCS output base mounting structure, which is arranged on the end plate body.

[0019] Furthermore, the installation direction of the end plate body is perpendicular to the ground.

[0020] Furthermore, the end plate body is made of a continuous fiber material obtained by a reinforced prepreg process.

[0021] Specifically, local cut-out structures are provided at both side edges of the end plate body to achieve a lightweight design.

[0022] The utility model also provides an energy storage battery pack, comprising the above-mentioned module end plate.

[0023] The beneficial effects of this utility model are as follows: By designing the width of the module end plate to match the combined width of at least two battery modules, the module end plate provided by this utility model integrates the functions of two conventional end plates, significantly improving space utilization. Furthermore, by integrating multiple module fixing holes, upper and lower steel strap mounting structures, and electrical component mounting areas into a single end plate, the functionality and practicality of the end plate are significantly enhanced. This design not only simplifies the overall structure of the energy storage battery pack, but also improves assembly efficiency and reduces production costs.

[0024] Furthermore, the module end plates of this utility model enhance functionality and safety through the provision of an insulating protective cover mounting structure, a module traceability code area, and evenly distributed lifting holes. The end plate bodies, manufactured using a continuous fiber-reinforced prepreg process, possess higher strength and crack resistance, while a lightweight design is achieved through partial cutaway structures. These features work together to not only improve the overall performance and safety of the energy storage battery pack, but also optimize the production and maintenance processes, providing a more advanced and efficient solution for the energy storage industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a module end plate according to an embodiment of the present invention;

[0026] Figure 2 This is an exploded view of the module end plate assembly state in one embodiment of the present invention.

[0027] In the figure, 1. Module end plate; 101. Module mounting hole; 102. Observation hole; 103. Upper steel strip fillet mounting slot; 104. Upper steel strip limiter slot; 105. BMU module mounting hole; 106. Lifting hole; 107. End plate back plate; 108. BMU and fuse base mounting slot; 109. Lower steel strip fillet mounting slot; 110. Lower steel strip limiter area; 111. End plate insulation cover mounting slot; 112. Module traceability code area; 113. Upper cover strip mounting limiter in the middle of the end plate. 114, CCS output base fixing hole; 115, CCS output pole aluminum bar fixing hole; 116, fuse base mounting hole; 117, side limit strip; 200, electrical parts insulation protection cover; 300, fastening bolts; 400, CCS output pole aluminum bar; 500, copper busbar A; 600, upper steel strip; 700, lower steel strip; 800, BMU; 900, fuse; 1000, fuse insulation base; 1100, copper busbar B; 1200, CCS output base. DETAILED DESCRIPTION

[0028] The following, in conjunction with the accompanying drawings, provides a more detailed description of an energy storage battery pack and its module end plate according to the present invention. Preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guideline for those skilled in the art and not as a limitation of the present invention.

[0029] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. The terms "vertical," "horizontal," "left," "right," "upper," "lower," and similar expressions used in this specification are for illustrative purposes only. It should be noted that the accompanying drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0030] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as commonly understood by those skilled in the art to which this invention belongs.

[0031] like Figure 1 and Figure 2 As shown, the utility model provides a module end plate for an energy storage battery pack, comprising: an end plate body, the width of which is adapted to the total width of at least two battery modules; a plurality of module fixing holes, arranged on the end plate body, for fixing the battery modules; an upper steel belt mounting structure, arranged on the upper part of the end plate body; a lower steel belt mounting structure, arranged on the lower part of the end plate body; an electrical component mounting area, arranged on the end plate body, for mounting a battery management unit and a fuse.

[0032] Preferably, the width of the end plate is slightly larger than the combined width of the two battery cells. This design allows for the addition of fire-resistant, high-temperature, and flame-retardant material between the two modules, significantly improving the thermal safety of the unit modules. Compared to traditional small metal end plates, this design not only expands the end plate's functional scope but also improves space utilization.

[0033] Specifically, the installation direction of the end plate body is perpendicular to the ground, so that the installation directions of auxiliary components such as BMU and fuse are parallel to the ground, which facilitates after-sales maintenance of BMU, replacement of fuse and other operations.

[0034] The end plate body includes an end plate backplate 107, which forms the main structure of the module end plate 100 and provides a mounting base for various functional components. Made of high-strength materials, end plate backplate 107 ensures the structural stability and durability of the entire module end plate 1. The design of end plate backplate 107 fully considers the layout requirements of various functional components, achieving a lightweight design while ensuring strength.

[0035] For example, the end plate body is manufactured using a continuous fiber reinforced prepreg (CPR) process. Compared to traditional RTM and PCM processes, the CPR process offers higher strength and crack resistance, as well as higher production efficiency and better economics. This advanced manufacturing process not only improves the performance of the end plate but also reduces production costs.

[0036] Specifically, the edges of the end plate body are provided with partial cutout structures to achieve a lightweight design. The partial cutout structures are located at the module mounting holes 101 on both sides of the end plate. This design further reduces the weight of the end plate while ensuring strength.

[0037] In this example, three module mounting holes 101 are provided, which eliminates one module mounting hole 101 compared to two single module end plates, thus achieving a lightweight design. This design not only reduces the overall weight, but also simplifies the assembly process and improves production efficiency.

[0038] In a specific example, the upper steel belt installation structure includes an upper steel belt rounded corner installation groove 103, an upper steel belt limiting area and an upper steel belt limiting groove 104. The upper steel belt limiting area is located between the two upper steel belt rounded corner installation grooves 103 and is connected to the upper steel belt rounded corner installation grooves 103; the upper steel belt limiting groove 104 is located below the upper steel belt rounded corner installation grooves 103; this multiple limiting design ensures the stability and reliability of the installation of the upper steel belt 600. A lower steel belt installation structure is provided at the lower part of the end plate body, including a lower steel belt rounded corner installation groove 109 and a lower steel belt limiting area 110; the lower steel belt rounded corner installation groove 109 is located on opposite sides of the end plate body, and the lower steel belt limiting area 110 is located between the two lower steel belt rounded corner installation grooves 109 and is connected to the lower steel belt rounded corner installation groove 109. The lower steel belt retaining area 110 is slightly higher than the lower steel belt rounded mounting groove 109. By removing a certain thickness (e.g., 1-5 mm) to create a larger retaining area, the problem of the lower steel belt 700 falling off after traditional module assembly is effectively avoided. This design significantly improves the structural stability and safety of the battery pack.

[0039] The end plate body is further provided with a side limiting strip 117, which is specifically arranged between the upper steel belt mounting structure and the lower steel belt mounting structure.

[0040] In one embodiment, the electrical component installation area is used to install the battery management unit (BMU800) and the fuse 900. Specifically, the electrical component installation area includes a BMU module installation hole 105 and a fuse base installation hole 116. This structure can install electrical components such as the BMU800 and the fuse 900 parallel to the ground, which is more in line with the after-sales maintenance operation logic: the operating tools are parallel to the ground, the disassembly and assembly actions are ergonomic, facing the battery pack operation panel, and plugging and unplugging wiring harnesses, connecting test equipment, and replacing fuses are more convenient. In addition, a BMU and fuse base installation slot 108 is also provided on the end plate body. The installation slot provides a stable installation foundation for the BMU800 and the fuse 900, and also facilitates the installation and removal of these key electrical components. The design of the BMU and fuse base installation slot 108 takes into account the size and connection requirements of the electrical components, ensuring the tightness of the installation and the reliability of the electrical connection. This design integrates the BMU800 and fuse 900 on the end plate, which not only simplifies the overall structure of the energy storage battery pack but also facilitates subsequent maintenance and inspection.

[0041] The purpose of providing an electrical component mounting area in this embodiment is to improve the internal space utilization of the battery module, reduce the overall external dimensions of the battery module, and thus, to a certain extent, increase the energy density of the entire cabinet. Traditionally, the BMU is installed on the charging module's slave control panel, requiring a longer data collection harness and sufficient operating space, resulting in a cluttered and lengthy harness. However, the BMU installation method in this embodiment can shorten the length of the data collection harness to a certain extent. With proper protection, the data collection harness of each unit module can be routed close to the module, making it easy to plug, unplug, and organize.

[0042] Furthermore, an insulating protective cover mounting structure is also provided on the upper portion of the end plate body, specifically an end plate insulating cover mounting groove 111, for mounting an insulating protective cover 200 for electrical components. The end plate insulating cover mounting groove 111 is configured in a groove shape to match the insulating protective cover 200 provided thereon. The depth and shape of the end plate insulating cover mounting groove 111 match the insulating protective cover 200, ensuring that the insulating protective cover 200 can be securely installed while being easily disassembled. This design not only enhances the protection of electrical components and improves overall safety performance, but also makes the installation and removal of the insulating protective cover 200 more convenient, facilitating routine maintenance and overhaul work.

[0043] In addition, a module traceability code area 112 is provided on the upper portion of the end plate body. Located in a large, blank area in the center upper portion of the end plate body, this area is used to engrave a module traceability QR code. This clear and easily identifiable code eliminates the need for engraved code areas in the recesses below or additional silver foil labels. This design not only facilitates product traceability but also improves information identification efficiency.

[0044] Furthermore, a plurality of lifting holes 106 are evenly distributed along the transverse direction of the end plate body. The even distribution of the lifting holes 106 ensures the balance of module lifting and greatly improves the safety and stability of the lifting process.

[0045] In addition, the end plate body is also provided with a CCS output base mounting structure, including CCS output base fixing holes 114 and CCS output pole aluminum bar fixing holes 115, for mounting CCS output base 1200 and CCS output pole aluminum bar 400. This design further increases the functionality of the end plate, making it adaptable to more application scenarios.

[0046] The module end plate 1 also includes an observation hole 102, located on the end plate body, for observing the internal structure. This design facilitates inspection and maintenance, improving the maintainability of the product. The end plate body is also provided with a mid-section upper cover belt installation stop 113 for limiting the installation of the upper cover belt. This design ensures accurate and stable installation of the upper cover belt.

[0047] The present invention also provides an energy storage battery pack, comprising the aforementioned module end plate 1. The energy storage battery pack further comprises fastening bolts 300, a copper busbar A500, an upper steel strip 600, a lower steel strip 700, an insulating fuse base 1000, and a copper busbar B1100. The specific installation and connection relationships of these components are well within the skill of those skilled in the art and will not be further elaborated.

[0048] In summary, the module end plates of this utility model, through their innovative design and advanced manufacturing processes, achieve performance improvements and functional optimization in multiple aspects. These features work together to not only significantly enhance the overall performance, safety, and reliability of the energy storage battery pack, but also significantly optimize the production and maintenance processes, improving production efficiency and economic benefits. Furthermore, the design of this utility model offers excellent adaptability and scalability, meeting the needs of diverse application scenarios. Overall, this utility model provides a more advanced, efficient, and economical solution for the energy storage industry.

[0049] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A module end plate of an energy storage battery pack, characterized in that: include: an end plate body, wherein the width of the end plate body is adapted to the total width of at least two battery modules; A plurality of module fixing holes are provided on the end plate body for fixing the battery modules; An upper steel belt mounting structure is provided on the upper portion of the end plate body; A lower steel belt mounting structure is provided at the lower portion of the end plate body; The electrical component installation area is arranged on the end plate body and is used for installing the battery management unit and the fuse.

2. The module end plate according to claim 1, characterized in that: Also includes: The insulating protection cover mounting structure is arranged on the upper part of the end plate body.

3. The module end plate according to claim 1, characterized in that: Also includes: The module traceability code area is arranged on the upper part of the end plate body.

4. The module end plate according to claim 1, characterized in that: It also includes a plurality of lifting holes that are evenly distributed along the transverse direction of the end plate body.

5. The module end plate according to claim 1, characterized in that: The upper steel belt installation structure includes: an upper steel belt rounded corner installation groove, an upper steel belt limiting area and an upper steel belt limiting groove. The upper steel belt rounded corner installation groove is located on opposite sides of the end plate body, and the upper steel belt limiting area is located between the two upper steel belt rounded corner installation grooves and is connected to the upper steel belt rounded corner installation groove; the upper steel belt limiting groove is located below the upper steel belt rounded corner installation groove.

6. The module end plate according to claim 5, characterized in that: The area of the upper steel belt limiting region is larger than the area of the upper steel belt rounded corner installation groove.

7. The module end plate according to claim 1, characterized in that: The lower steel belt installation structure includes: a lower steel belt rounded corner installation groove and a lower steel belt limiting area. The lower steel belt rounded corner installation groove is located on opposite sides of the end plate body, and the lower steel belt limiting area is located between the two lower steel belt rounded corner installation grooves and is connected to the lower steel belt rounded corner installation groove.

8. The module end plate according to claim 7, characterized in that: The area of the lower steel belt limiting region is larger than the area of the lower steel belt rounded corner installation groove.

9. The module end plate according to claim 1, characterized in that: The end plate body is further provided with a side limiting strip, which is specifically arranged between the upper steel belt mounting structure and the lower steel belt mounting structure.

10. The module end plate according to claim 1, characterized in that: Also includes: The CCS output base mounting structure is arranged on the end plate body.

11. The module end plate according to claim 1, characterized in that: The installation direction of the end plate body is perpendicular to the ground.

12. The module end plate according to claim 1, characterized in that: The end plate body is made of continuous fiber material obtained by a reinforced prepreg process.

13. The module end plate according to claim 1, characterized in that: Local cutting structures are provided at both side edges of the end plate body.

14. An energy storage battery pack, characterized in that: Comprising the module end plate according to any one of claims 1 to 13.

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