Integrated module for power battery and assembling method

Abstract

The invention relates to the technical field of battery module design, and particularly discloses an integrated module for a power battery and an assembling method, the integrated module comprises a plurality of stacked battery packs, and each battery pack comprises a bottom plate on which a plurality of layers of battery cells are placed; the isolation gaskets are placed between the adjacent left and right layers of battery cells and are used for isolating the adjacent two layers of battery cells; the integrated top plate is placed on the battery cell on the topmost layer, is used for pressing the battery cell downwards and is far away from the bottom plate; the embedded BMS is fixedly mounted on the integrated top plate; and one end of the integrated CCS sub-module is in direct insertion connection with the embedded BMS, and the other end of the integrated CCS sub-module penetrates out of the integrated top plate and is connected with each layer of battery cells. According to the invention, the volume / mass grouping rate can be improved, more energy can be provided in a unit space, the device is suitable for being installed in a loose and compact environment or an environment with space limitation, the light weight is realized, and the cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of battery module design technology, specifically to an integrated module for power batteries and its assembly method. Background Technology

[0002] Current battery module design practices emphasize integration, high efficiency, and high safety to meet the ever-growing demand for energy storage. The designs employ a modular architecture, allowing for customization of voltage and capacity by connecting different numbers of standard cells in series or parallel. In current battery module design practices, a common approach is to design the Battery Management System (BMS) independently from the battery module. In this design, the battery module generates output sampling signals, which are then transmitted to the BMS via specially configured wiring harnesses for data acquisition and processing. An example is the distributed acquisition module for a power battery pack described in patent application number CN202411340452.4. However, this existing separate design presents several challenges. First, regarding space utilization efficiency, the additional wiring harnesses required to connect the battery module and the BMS not only consume significant space but also limit the battery system to relatively large environments, making it particularly bulky in applications with strict size requirements, such as small electric vehicles. Second, from a cost perspective, the separate design and the additional wiring harnesses directly increase material costs and indirectly raise installation costs due to increased installation complexity. Finally, and importantly, there is the issue of the overall weight of the battery system. The addition of wiring harnesses significantly increases the overall mass of the system, which has a substantial impact on weight-sensitive applications such as range optimization for small electric vehicles and payload management for small aircraft. The extra weight may lead to increased energy consumption, thereby reducing the overall performance of the system.

[0003] In the second type of existing battery module design, a double-layer battery pack design is sometimes adopted to meet high capacity requirements. For example, in the existing technology, the paper "Thermal Management Design and Optimization of Double-Layer Module Power Battery Packs" published in the 2023 issue 2 of the journal *Southern Agricultural Machinery* by Li Bin and You Daoliang et al., achieves higher energy density and storage capacity by stacking two layers of battery cells, thus meeting the high battery capacity requirements of applications such as electric vehicles and energy storage systems. However, to support this double-layer structure, additional hardware components, such as middle plates or inter-layer plates, must be introduced to separate and stabilize the upper and lower battery cells. This design can improve the overall capacity of the battery module to some extent; however, its disadvantages are also significant. First, in terms of space utilization, the double-layer battery pack design inevitably increases the overall volume of the battery module due to the need for auxiliary structural components such as middle plates. This not only limits its installation to larger environments but also easily affects the overall layout design of electric vehicles or electronic devices. Second, from a cost perspective, in addition to the increased material costs of the middle plates themselves, the more complex assembly process also leads to increased assembly costs. Furthermore, the cost of additional components such as cooling systems and electrical connections must also be considered, which collectively increases the overall manufacturing cost of the battery system. Finally, the weight issue cannot be ignored. The dual-layer battery pack design and the required additional hardware components directly increase the total system weight, posing a significant challenge for weight-sensitive applications such as commercial vehicles and small electric vehicles. The extra weight may not only lead to increased energy consumption but also affect the ease of transporting and installing the product.

[0004] In the third type of existing battery module design, in multi-module battery systems, the existing Current Collection System (CCS) sampling method involves the collaborative operation of numerous components due to the need to process data from multiple battery modules. For example, the stacking method of the CCS module harness isolation board assembly in patent application CN202311581110.7 typically requires additional plug-ins and harnesses to ensure accurate data transmission from each battery module to the Battery Management System (BMS). However, this design also has significant drawbacks. First, in terms of space consumption, the physical layout of the entire battery system becomes more complex and bulky with the increase in the number of plug-ins and harnesses. This not only occupies space resources but also limits installation to large environments, affecting the system's heat dissipation performance and overall structural compactness. Second, from a cost perspective, the additional hardware components significantly increase material costs. More plug-ins, harnesses, and potentially necessary support structures and fixing devices directly drive up manufacturing costs. Furthermore, the complex assembly process also means higher manufacturing costs and longer production cycles. Finally, it is worth noting the increased system reliability and maintenance difficulty. As the number of components increases, so do the potential points of failure, posing a greater challenge to the system's stability and reliability. At the same time, the complex wiring and connection methods also complicate later maintenance and repair work, leading to higher maintenance costs and service requirements. Summary of the Invention

[0005] The present invention aims to provide an integrated module for power batteries and an assembly method to improve the volume / weight assembly rate, provide more energy in a unit space, and be suitable for installation in environments with loose, compact or space-constrained conditions, thereby achieving lightweighting and reducing costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The first solution is an integrated module for power batteries comprising multiple stacked battery packs. Each battery pack includes: a base plate on which multiple layers of battery cells are placed; a spacer placed between adjacent left and right layers of battery cells to isolate the adjacent layers of battery cells; an integrated top plate placed on the topmost battery cell to press the battery cell downwards and away from the base plate; an embedded BMS fixedly mounted on the integrated top plate; and an integrated CCS sub-module, one end of which is directly connected to the embedded BMS, and the other end of which extends through the integrated top plate and connects to each layer of battery cells.

[0007] Beneficial effects: First, improved volume / weight packing efficiency. Firstly, integrated design. By integrating the embedded BMS onto a unified top plate, and directly connecting the integrated CCS sub-module to the BMS, the complex wiring harness connection between the BMS and the module in traditional designs is eliminated. This design significantly reduces space occupation, making the overall structure of the battery module more compact and better suited for compact or space-constrained installation environments. Secondly, elimination of the second-layer board design. In the double-cell structure, the second-layer board required in traditional double-cell modules is eliminated. The upper and lower layers of cells are separated by insulating spacers, further optimizing space utilization, reducing the overall height and volume of the battery module, and simultaneously reducing material costs.

[0008] Secondly, cost reduction and lightweighting. First, reduced material usage. The integrated design eliminates additional components such as the second-layer board, BMS bracket, and adapter harnesses found in traditional designs, reducing material costs. Simultaneously, the simplified design reduces manufacturing complexity, decreasing processing and assembly costs during production.

[0009] Preferably, it also includes multiple side strips, one end of which is fixedly connected to the side of the bottom plate, and the other end is fixedly connected to the side of the integrated top plate.

[0010] Beneficial effects: By incorporating multiple side strips, with one end fixedly connected to the side of the base plate and the other end fixedly connected to the side of the integrated top plate, the overall structural stability of the battery pack can be enhanced. The side strips effectively constrain the horizontal displacement of the battery cells, preventing them from shaking or shifting due to vibration or external forces during use, thereby improving the reliability and safety of the battery module. Simultaneously, the connection method of the side strips facilitates the assembly and disassembly of the battery pack, simplifying the production process and reducing manufacturing costs.

[0011] Preferably, the tabs of each cell are not on the same plane as the side strips, integrated top plate, and bottom plate.

[0012] Beneficial effects: Each cell's tabs are not on the same plane as the side strips, integrated top plate, and bottom plate. This design effectively avoids direct contact and friction between the tabs and other components, reducing the risk of short circuits and electrode damage. Simultaneously, this structural layout provides better space for heat dissipation, facilitating heat dissipation and thus improving the battery module's lifespan and performance stability. Furthermore, it simplifies the cell assembly process and improves production efficiency.

[0013] Preferably, an embedded BMS is provided between two adjacent battery packs at intervals.

[0014] Beneficial effects: The embedded BMS between adjacent battery packs allows for a more even distribution of BMS throughout the battery module, enabling more precise and efficient management and monitoring of the cells in each pack. Compared to traditional centralized BMS layouts, this spaced layout better adapts to the stacked structure of battery modules, reduces signal transmission distance, minimizes signal interference, and improves the sampling accuracy and response speed of the BMS, thereby enhancing the overall performance and safety of the battery module.

[0015] Preferably, it further includes a first connection harness set, and the embedded BMS and each battery cell are communicatively connected through the first connection harness set; wherein, the first connection harness set includes a main connection line and multiple sub-connection lines; the embedded BMS is connected to one end of the main connection line; one end of the sub-connection line is connected to the other end of the main connection line, and the other end of the sub-connection line is connected to the battery cell.

[0016] Beneficial effects: By setting up a first connection harness set, the embedded BMS and each battery cell can achieve communication connection through a main connection line and multiple sub-connection lines. This connection method ensures more stable and reliable signal transmission between the BMS and the battery cell, facilitating real-time monitoring and control of parameters such as voltage, current, and temperature of the battery cell by the BMS. Simultaneously, the structural design of the main connection line and sub-connection lines simplifies wiring, reduces harness complexity, lowers the risk of failure due to excessive harnesses, and improves the reliability and maintainability of the battery module.

[0017] Preferably, a first gap is left between two adjacent cells parallel to the integrated top plate, and the main connecting line is set in the first gap and abuts against the isolation pad.

[0018] Beneficial effects: A first gap is maintained between two adjacent cells parallel to the integrated top plate, and the main connecting wire is placed within this gap and abutted against the insulating pad. This design makes full use of the space between the cells, avoids the main connecting wire occupying additional space resources, and improves the space utilization rate of the battery module. At the same time, the main connecting wire abutting against the insulating pad provides a certain degree of insulation and protection, preventing short circuits or electrical interference between the main connecting wire and the cells, further improving the safety and reliability of the battery module.

[0019] Preferably, a single battery pack has two layers of cells, the distance between the bottom plate and the integrated top plate does not exceed 500mm, and the volume of the integrated module for the power battery is not greater than 48,000,000 cubic millimeters, and the battery capacity is not less than 30Ah.

[0020] Beneficial effects: First, by limiting a single battery pack to two layers of cells, with the distance between the bottom plate and the integrated top plate not exceeding 500mm, and the volume of the integrated power battery module not exceeding 48,000,000 cubic millimeters, this design achieves higher energy density within a limited space. The dual-layer cell structure significantly increases the battery capacity per unit volume, while the strict limitations on height and volume ensure that the module can adapt to compact or space-constrained installation environments, such as small electric vehicles or portable electronic devices.

[0021] Secondly, the requirement for a minimum battery capacity of 30Ah ensures that the module can meet the needs of high-capacity applications such as electric vehicles and energy storage systems. Through optimized design, high energy output is achieved without significantly increasing size and weight, enhancing the practicality and market competitiveness of the battery module.

[0022] This design not only optimizes space utilization but also reduces the use of additional components (such as eliminating the second-layer board and wiring harness) through integrated design, thus lowering the overall weight and achieving lightweighting. Furthermore, the compact structural design helps improve heat dissipation efficiency, reduces heat buildup, thereby extending the battery module's lifespan and enhancing its performance stability.

[0023] Finally, while meeting the requirements of high capacity and compact design, this module also possesses excellent adaptability. Through optimized structure and spatial layout, it can be used flexibly in a variety of application scenarios, effectively meeting the needs of both compact devices with strict size requirements and large devices with high capacity requirements, thus improving the versatility and applicability of the battery module.

[0024] Preferably, the types of battery cells include pouch cells and prismatic cells.

[0025] Beneficial effects: The battery cell types include pouch cells and prismatic cells. This diverse selection of cell types allows the battery module to be flexibly configured according to different application scenarios and needs. Pouch cells have advantages such as light weight and high customizability, making them suitable for applications with high requirements for weight and space. Prismatic cells, on the other hand, have characteristics such as structural stability and good heat dissipation, making them suitable for scenarios with high requirements for battery performance and reliability.

[0026] The second solution is a method for assembling an integrated module for a power battery, used to assemble the integrated module for a power battery described in the first solution, comprising: S1, placing the bottom surface of a multilayer cell on a base plate and inserting a spacer between adjacent left and right layers of cells; S2, embedding and fixing an embedded BMS on an integrated top plate; one end of an integrated CCS sub-module is directly connected to the embedded BMS, and the other end is connected to a cell; the integrated top plate is abutted against the top surface of the multilayer cell, and relative pressure is applied to the base plate and the integrated top plate to fix the cell; S3, fixing one end of a side strip to the side of the integrated top plate and the other end to the side of the base plate to form a first battery pack; S4, repeating steps S1, S2 and S3 to form a second battery pack, the base plate of the second battery pack and the integrated top plate of the first battery pack are fixedly connected, and the first battery pack and the second battery pack form an integrated module for a power battery.

[0027] Beneficial effects: This assembly method is simple, efficient, and easy to operate and implement, effectively improving the production efficiency and assembly quality of battery modules. Simultaneously, standardized assembly steps ensure the structural and performance consistency of each battery pack, thereby improving the reliability and stability of the entire battery module. Furthermore, this assembly method facilitates automated production, further reducing production costs and increasing production efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram (a) of an integrated module for a power battery according to Embodiment 1; Figure 2 This is a schematic diagram (b) of an integrated module for a power battery according to Embodiment 2; Figure 3 This is a top view schematic diagram of an integrated module for a power battery according to Embodiment 2; Figure 4 This is a side view (a) of an integrated module for a power battery according to Embodiment 2; Figure 5 This is a front view schematic diagram (a) of an integrated module for a power battery according to Embodiment 2; Detailed Implementation The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0030] The reference numerals in the accompanying drawings include: 1. Integrated top plate, 2. Battery cell, 3. Base plate, 4. Embedded BMS, 5. Integrated CCS sub-module, 6. Side strip, 7. Isolation pad, 8. Rivet, 9. Main connecting line, 10. Sub-connecting line, 11. First battery cell layer, 12. Second battery cell layer, 13. First connecting line bundle.

[0031] Example 1 This embodiment provides an integrated module for power batteries, such as... Figure 1 As shown, it comprises at least two battery packs stacked together. Each battery pack includes a base plate 3, a battery cell 2, a spacer 7, an integrated top plate 1, an embedded BMS 4, and an integrated CCS sub-module.

[0032] Specifically, such as Figure 1 The left end of the integrated CCS sub-module is directly connected to the embedded BMS4, and the right end extends out of the integrated top plate 1 to connect with each layer of cells. For example... Figure 2 As shown, in this embodiment, two layers of battery cells are placed on the base plate 3. The tabs of each battery cell 2 are not on the same plane as the side strip 6, the integrated top plate 1, and the base plate 3. In the prior art, the tabs of the battery cells generally face upwards to be closer to the BMS module. However, this prevents the stacking of two battery packs, as the stacking would inevitably compress the tabs, causing them to deform under pressure. If the tabs are oriented upwards towards the BMS module as in the prior art, a baffle must be fixed between each battery pack. There must be a gap between the baffle and the tab, and the baffle material cannot be conductive and must be strong enough to withstand the weight of at least one battery pack. Because the tabs are conductive, they cannot be made of conductive material. In this embodiment, the tabs of the battery cells 2 are not on the same plane as the side strip 6, the integrated top plate 1, and the base plate 3, avoiding the need for baffles. This not only reduces the volume of multi-layer battery pack stacking but also reduces material costs. Figure 2 The integrated top plate 1 can be tightly fixed to the upper end of the battery cell. For example... Figure 3 The embedded BMS4 is fixedly and embedded in the upper part of the integrated top plate 1. The embedded BMS4 is spaced apart between two adjacent battery packs. (Example...) Figure 4 The upper end of the side strip 6 is fixedly connected to the integrated top plate 1 by rivets 8, and the lower end is fixedly connected to the bottom plate 3 by rivets 8. For example... Figure 5The two cell layers are referred to as the first cell layer 11 and the second cell layer 12, respectively, and an isolation pad 7 is provided between the first cell layer 11 and the second cell layer 12. The integrated module for the power battery also includes a first connection harness 13, and the embedded BMS4 is communicatively connected to the first cell layer 11 and the second cell layer 12 through the first connection harness 13. The first connection harness 13 includes a main connection line 9 and multiple sub-connection lines 10; the embedded BMS4 is connected to one end of the main connection line 9; one end of each sub-connection line 10 is connected to the other end of the main connection line 9, and the other end of each sub-connection line 10 is connected to the first cell layer 11 and the second cell layer 12. The first cell layer 11 and the second cell layer 12 each have an equal number of sub-cells, and each voltage sampling position (nickel sheet) of each sub-cell is connected to a sub-connection line 10, such as... Figure 5 As shown, each cell layer has 6 sub-cells. The main connecting line 9 is located in the first gap between the first cell layer 11 and the second cell layer 12, and is attached to the insulating pad 7.

[0033] In this embodiment, a single battery pack has two layers of cells, the distance between the bottom plate and the integrated top plate does not exceed 500mm, and the volume of the integrated module for the power battery is not greater than 48,000,000 cubic millimeters, and the battery capacity is not less than 30Ah.

[0034] Working principle of this embodiment First, the integrated top plate 1 is designed to be integrated with the BMS. The integrated top plate 1 is equipped with rivet nuts and mounting holes to connect with the BMS components and achieve integrated installation.

[0035] Secondly, the integrated top plate 1 corresponds to the upper and lower double-layer cell design, eliminating the need for the second-layer plate design required by the existing double-layer module. The double-layer cells are separated by insulating foam. After the entire battery module is pre-pressed, it is constrained by the side plate, which improves the rigidity of the overall module.

[0036] Finally, the integrated CCS design uses a single CCS sampling module with upper and lower layers, and the CCS plug-in is directly inserted into the BMS inside the integrated top plate 1, eliminating the need for existing adapter harnesses.

[0037] Table 1. Advantages of this embodiment compared to the prior art

[0038] Referring to Table 1, specifically, firstly, space optimization and improved integration. By integrating the embedded BMS4 onto the integrated top plate 1, and directly connecting the integrated CCS sub-module to the BMS, the complex wiring harness connection between the BMS and the module in traditional designs is eliminated. This design significantly reduces space occupation, making the overall structure of the battery module more compact and better adaptable to compact or space-constrained installation environments. The second-layer board design is eliminated. In the double-cell structure, the second-layer board required by traditional double-cell modules is eliminated. The upper and lower layers of cells are separated by the insulating pad 7, further optimizing space utilization, reducing the overall height and volume of the battery module, and reducing material costs. The main connecting line 9 is placed in the first gap between adjacent layers of cells and is close to the insulating pad 7. This layout not only saves space but also improves the protection and reliability of the wiring harness, reducing the risk of short circuits caused by improper wiring harness arrangement.

[0039] Secondly, structural stability is enhanced. The base plate 3 and the integrated top plate 1 are fixedly connected by side strips 6, forming a stable frame structure that enhances the overall rigidity and stability of the battery module. This design effectively prevents the cells from shifting or deforming due to vibration or external forces during use, improving the reliability and safety of the battery module. The entire battery module is constrained by the side strips 6 after pre-compression, further improving the module's stability. This design not only ensures the stability of the cells during use but also improves the mechanical strength of the battery module, enabling it to better withstand external pressure and impact.

[0040] Third, cost reduction and lightweight design. The integrated design eliminates additional components such as the second-layer board, BMS bracket, and adapter harness found in traditional designs, reducing material costs. Simultaneously, the simplified design reduces manufacturing complexity, decreasing processing and assembly costs during production.

[0041] Fourth, performance improvements and enhanced reliability. By optimizing the cell layout and using the insulating pad 7, the heat dissipation performance of the battery module has been improved. Sufficient space between adjacent cell layers allows for heat dissipation, reducing heat buildup and extending the battery module's lifespan. The integrated design of the embedded BMS4 and the integrated CCS sub-module enables the BMS to more accurately monitor the status of each cell layer, improving the management and control precision of the battery module and enhancing system reliability and safety.

[0042] Example 2 This embodiment is used to assemble an integrated module for a power battery as described in Embodiment 1. S1: The bottom surface of the multi-layered battery cells is placed on a base plate, and insulating spacers are inserted between adjacent left and right layers of cells. S2: An embedded BMS is embedded and fixedly mounted on the integrated top plate; one end of the integrated CCS sub-module is directly connected to the embedded BMS, and the other end is connected to a battery cell; the integrated top plate is placed against the top surface of the multi-layered battery cells, and relative pressure is applied to the base plate and the integrated top plate to fix the battery cells. S3: One end of a side strip is fixedly connected to the side of the integrated top plate, and the other end is fixedly connected to the side of the base plate, forming a first battery pack. S4: Steps S1, S2, and S3 are repeated to form a second battery pack. The base plate of the second battery pack is fixedly connected to the integrated top plate of the first battery pack. The first battery pack and the second battery pack form an integrated module for a power battery.

[0043] Beneficial effects of this embodiment First, the efficient assembly process. Standardized steps (such as cell placement, BMS installation, and side strip connection) enable rapid assembly of battery modules. This standardized process not only improves production efficiency but also ensures structural and performance consistency across each battery pack, reducing quality issues caused by improper assembly. By repeating the same assembly steps to form multiple battery packs, and then stacking these packs together to create an integrated module, this modular assembly method facilitates large-scale and automated production. Each battery pack can be produced, tested, and repaired as an independent module, improving production flexibility and maintainability.

[0044] Secondly, quality and reliability are guaranteed. By repeating the same assembly steps, the structure and performance of each battery pack are ensured to be highly consistent. This consistency is crucial for the overall performance of the battery module, effectively reducing system failures caused by performance differences in individual battery packs and improving the reliability and stability of the battery module. The modular assembly method allows each battery pack to be maintained and repaired as an independent unit. When a battery pack fails, the faulty module can be quickly located and replaced, reducing repair time and costs and improving system maintainability. By stacking multiple battery packs to form an integrated module, the number and stacking method of battery packs can be flexibly adjusted according to different application scenarios and energy requirements to achieve different voltage and capacity configurations. This flexibility allows the module to better adapt to various application scenarios, such as small electric vehicles. It is suitable for various types of cells (such as pouch cells and prismatic cells), further improving the versatility and adaptability of the battery module. This compatibility allows the battery module to be quickly adjusted to meet different market demands, reducing development costs and time.

[0045] Finally, the cost-effectiveness is significant. By simplifying the assembly process and reducing assembly steps, labor costs and production time are reduced. At the same time, the modular assembly method facilitates automated production, further improving production efficiency and reducing production costs.

[0046] Furthermore, it is highly adaptable and flexible.

[0047] For parts not described in this embodiment, please refer to Embodiment 1.

[0048] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., mean that a specific feature, method, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this specification.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An integrated module for power batteries, characterized in that, Includes multiple stacked battery packs, each battery pack comprising: The base plate contains multiple layers of battery cells; An insulating pad is placed between two adjacent left and right layers of battery cells and is used to isolate the battery cells in the two adjacent layers. An integrated top plate is placed on the topmost battery cell to press the cell downwards and keep it away from the bottom plate; Embedded BMS, fixedly mounted on an integrated top plate; The integrated CCS sub-module is directly connected to the embedded BMS at one end, and the other end extends out of the integrated top plate to connect to each layer of cells.

2. The integrated module for power batteries according to claim 1, characterized in that, It also includes multiple side strips, one end of which is fixedly connected to the side of the base plate, and the other end is fixedly connected to the side of the integrated top plate.

3. The integrated module for a power battery according to claim 2, characterized in that, Each cell's tab is not on the same plane as the side strip, integrated top plate, and bottom plate.

4. The integrated module for a power battery according to claim 1, characterized in that, An embedded BMS is installed between two adjacent battery packs.

5. An integrated module for a power battery according to claim 1, characterized in that, It also includes a first connection harness set, an embedded BMS, and each battery cell is communicatively connected via the first connection harness set; The first connection bundle includes a main connection line and multiple sub-connection lines; the embedded BMS is connected to one end of the main connection line; one end of the sub-connection line is connected to the other end of the main connection line, and the other end of the sub-connection line is connected to the battery cell.

6. An integrated module for a power battery according to claim 5, characterized in that, A first gap is left between two adjacent cells parallel to the integrated top plate, and the main connecting line is set in the first gap and abuts against the isolation pad.

7. An integrated module for a power battery according to claim 1, characterized in that, Each battery pack has two layers of cells, the distance between the bottom plate and the integrated top plate does not exceed 500mm, and the volume of the integrated module for the power battery is not greater than 48,000,000 cubic millimeters, and the battery capacity is not less than 30Ah.

8. An integrated module for power batteries according to claim 1, characterized in that, The types of battery cells include pouch cells and prismatic cells.

9. A method for assembling an integrated module for a power battery, characterized in that, For assembling an integrated module for a power battery as described in any one of claims 1-8, comprising: S1, place the bottom of the multilayer cell on the base plate and insert the insulating pad between the two adjacent left and right layers of cells; S2, embed and fix the embedded BMS on the integrated top plate; one end of the integrated CCS sub-module is directly connected to the embedded BMS, and the other end is connected to the battery cell; the integrated top plate is attached to the top surface of the multi-layer battery cell, and relative pressure is applied to the bottom plate and the integrated top plate respectively to fix the battery cell; S3, one end of the side strip is fixedly connected to the side of the integrated top plate, and the other end is fixedly connected to the side of the bottom plate to form the first battery pack; S4. Repeat steps S1, S2 and S3 to form a second battery pack. The bottom plate of the second battery pack is fixedly connected to the integrated top plate of the first battery pack. The first battery pack and the second battery pack form an integrated module for power batteries.

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