CCS assembly developed by attaching button to fix NTC assembly

Abstract

The utility model discloses a CCS assembly developed by fixing an NTC assembly through a nail button, and the CCS assembly comprises a plastic uptake isolation plate which is provided with an aluminum bar and an FPC assembly. A cantilever of the FPC assembly is close to and overlaid on the aluminum bar, the cantilever of the FPC assembly is connected with an NTC assembly, the NTC assembly is limited on the aluminum bar through a nail catcher, and the NTC assembly penetrates through the blister isolation plate and extends towards the direction of the battery cell where the blister isolation plate is located. According to the CCS assembly developed by fixing the NTC assembly through the nail buttons, a traditional injection molding support is omitted, the nail buttons are adopted for direct fixing, the symmetrical double-nail-button design of an aluminum bar, the nail buttons and a hot riveting column triple fixing structure is formed, stress balance is ensured, and the problems that a traditional NTC support is large in occupied space, high in cost, poor in reliability and the like are effectively solved; and a more optimized temperature monitoring solution is provided for a new energy battery system.

Description

Technical Field

[0001] This utility model relates to a CCS component, and more particularly to a CCS component developed for fastening NTC components. Background Technology

[0002] In new energy battery modules, the CCS (Computer-Coated Cell) module is a key component, and its performance directly affects the reliability and cost-effectiveness of the entire battery system. Traditional CCS solutions use NTC injection-molded brackets combined with a hot-riveting process to fix the NTC module. This technical solution has revealed several problems in practical applications:

[0003] First, from a manufacturing process perspective, the mold design for NTC injection molding brackets is complex and difficult to process, which not only increases the development cycle but also significantly raises production costs. Second, in terms of space utilization, traditional bracket structures are bulky, severely restricting the optimal use of internal space within the battery cell. More importantly, this structure leads to an increase in the overall weight of the module, which runs counter to the current urgent need for lightweighting in the new energy industry.

[0004] With the rapid development of the new energy industry, the market has placed more stringent performance requirements on CCS modules: on the one hand, it is necessary to continuously reduce weight to improve energy density, and on the other hand, it is essential to continuously reduce costs to enhance market competitiveness. Against this backdrop, traditional NTC injection molding bracket fixing solutions are no longer sufficient to meet the industry's development needs. There is an urgent need to develop a new NTC module fixing solution to address a series of problems associated with existing technologies, such as complex processes, low space utilization, heavy weight, and high costs, thereby providing technical support for improving the performance and optimizing the cost of new energy battery modules. Utility Model Content

[0005] To address the shortcomings of the aforementioned technologies, this utility model provides a CCS component developed for fixing NTC components with pins and buckles.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: a CCS component for fastening NTC components, including a vacuum-formed isolation plate, on which aluminum foil and FPC components are installed;

[0007] The cantilever of the FPC module is close to and stacked on the aluminum bar. The NTC module is connected to the cantilever of the FPC module. The NTC module is fixed on the aluminum bar by fasteners. The NTC module extends through the blister pack to the direction of the cell.

[0008] Furthermore, the thermoformed partition plate supports the aluminum bar through a groove, and the aluminum bar connects to the battery cell through a detection port opened in the groove.

[0009] Furthermore, both the aluminum bus and the FPC assembly are connected to the thermoformed partition plate via hot riveting posts.

[0010] Furthermore, the NTC component is connected to the surface of the battery cell via a thermal pad.

[0011] Furthermore, the fasteners pass through the cantilever of the FPC assembly and are secured in the mounting holes of the aluminum bar.

[0012] Furthermore, the cantilever of the FPC component is rectangular, the NTC component is located in the middle of the cantilever, and there are two fasteners located on both sides of the NTC component.

[0013] Furthermore, the cantilever of the FPC component is located on the side of the aluminum bar that is close to both.

[0014] This utility model discloses a CCS module for fixing NTC modules with snap fasteners, which has the following outstanding advantages: It proposes an innovative CCS module solution for fixing NTC modules with snap fasteners, achieving reliable installation of the NTC module through a collaborative fixing structure of snap fasteners and aluminum cores. The snap fasteners are precisely embedded in the pre-set fixing holes of the aluminum core, while the aluminum core and the thermoformed isolation plate are firmly connected through heat-riveting posts, thus forming a triple fixing guarantee mechanism. This innovative design effectively solves the industry problem of unstable NTC module fixing due to cell space limitations in traditional solutions, completely eliminating the risk of module detachment and ensuring the accuracy of temperature acquisition. It also avoids PACK pack failures caused by temperature monitoring failures from the source. The traditional injection-molded bracket is eliminated, and direct fixing with snap fasteners is adopted, forming a triple fixing structure of aluminum core + snap fasteners + heat-riveting posts. The symmetrical double-snap fastener design ensures balanced force distribution, effectively solving the problems of large space occupation, high cost, and poor reliability of traditional NTC brackets, providing a more optimized temperature monitoring solution for new energy battery systems. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0017] Figure 3 for Figure 1 An enlarged diagram of the circled area.

[0018] Figure 4 for Figure 2 An enlarged diagram of the circled area.

[0019] Figure 5 This is a schematic diagram of the fastener structure.

[0020] In the diagram: 1. Vacuum-formed partition; 2. Aluminum bar; 3. Fastener; 4. FPC assembly; 5. NTC assembly; 6. Thermal pad; 7. Thermal riveting post. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 and Figure 2 The CCS assembly shown is a development of a pin-fixed NTC component, including a vacuum-formed isolation plate 1, which serves as a support frame. An aluminum bus 2 and an FPC assembly 4 are mounted on the vacuum-formed isolation plate 1, providing a mounting base for the aluminum bus and FPC assembly. The vacuum-formed isolation plate 1 supports the aluminum bus 2 through a groove, and the aluminum bus 2 connects to the battery cell through a detection port opened within the groove. The groove structure ensures the flatness of the aluminum bus. The aluminum bus 2 is used to achieve electrical connections between battery cells. The FPC assembly 4 is a flexible circuit board with advantages such as high wiring density, light weight, and thinness, mainly used for the acquisition and transmission of battery cell voltage and temperature signals within the PACK.

[0023] In this embodiment, both the aluminum bar 2 and the FPC assembly 4 are connected to the vacuum-formed partition plate 1 via hot-riveting posts 7. The cantilever of the FPC assembly 4 is close to and overlaps the aluminum bar 2. An NTC assembly 5 is connected to the cantilever of the FPC assembly 4. The NTC assembly is limited to the aluminum bar 2 by fasteners 3. The fasteners 3 pass through the cantilever of the FPC assembly 4 and are locked in the fixing holes of the aluminum bar 2. The fasteners 3 are as follows: Figure 5 As shown, it features a flexible claw structure with a passivated surface. The NTC component 5 extends through the blister pack 1 towards the battery cell, used for collecting and transmitting the battery cell temperature. The NTC component 5 can be an epoxy resin-encapsulated thermistor with a resistance of 10kΩ ± 1% (25℃).

[0024] Specifically, in this embodiment, Figure 2 and Figure 4As shown, the cantilever of FPC component 4 is rectangular, with NTC component 5 located in the middle of the cantilever. There are two fasteners 3, positioned on either side of NTC component 5. The cantilever of FPC component 4 is located on the side of the aluminum bus 2, close to both components. The two fasteners on either side of the NTC component form a symmetrical support structure. When the battery module is subjected to vibration or impact, the clamping force of the fasteners can be evenly distributed, preventing the NTC component from tilting or falling off due to single-point fixing. The cantilever is arranged close to the side of the aluminum bus, making full use of the space between the aluminum bus and the vacuum-formed partition plate. Compared to traditional injection-molded bracket solutions, this significantly saves lateral space. Furthermore, the standardized dimensions of the rectangular terminals are suitable for robotic gripping, and the fastener pressing can be completed in one go using a servo stamping machine. Meanwhile, the NTC component 5 is in contact with the surface of the battery cell through the thermal pad 6. The thermal pad is used to transfer the temperature of the battery cell to the NTC component. The thermal pad 6 can be made of silicone-based composite material with a thermal conductivity of 3.5 W / m·K and a thickness of 0.5 mm ± 0.05 mm. The NTC component 5 forms a tight contact with the surface of the battery cell through the thermal pad 6, but it is not limited to the above materials. Other metal-based composite materials can also be used, such as aluminum-based thermal pads or copper foil-polymer composite pads.

[0025] In summary, this invention proposes an innovative CCS component solution for securing NTC modules with snap fasteners. The reliable installation of the NTC module is achieved through a collaborative fixing structure of the snap fasteners and the aluminum busbar. Specifically, the snap fasteners are precisely embedded in the pre-set fixing holes in the aluminum busbar, while the aluminum busbar and the thermoformed isolation plate are securely connected via thermally riveted posts, forming a triple-fixing protection mechanism. This innovative design effectively solves the industry problem of insecure NTC module fixing due to cell space limitations in traditional solutions, completely eliminating the risk of module detachment and ensuring the accuracy of temperature acquisition, thus preventing PACK package failures caused by temperature monitoring malfunctions.

[0026] Compared to the traditional solution using 1.5–2.0 mm thick NTC injection-molded brackets, this solution offers significant advantages: First, it eliminates the complex injection-molded bracket structure, simplifying mold design by 60% and significantly reducing processing difficulty; second, the buckle structure is 70% lighter than traditional brackets, reducing unit cost by 45%; third, it reduces space occupancy by over 50%, creating favorable conditions for increasing the energy density of the battery module. This innovative fixing method not only achieves lightweight design of CCS modules but also makes breakthrough progress in cost control and reliability improvement, providing a practical solution for the technological upgrade of new energy storage battery modules.

[0027] Actual testing has verified that this solution achieves an average weight reduction of 32% for CCS modules, a 40% reduction in production costs, and a two-order-of-magnitude improvement in temperature acquisition stability, perfectly meeting the stringent requirements of the current new energy industry for lightweight, low-cost, and high-reliability battery systems. This technological innovation opens up a new path for performance optimization of power batteries and energy storage systems.

[0028] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. A CCS assembly developed for a button fixing NTC assembly, characterized in that: It comprises a blister isolation plate (1) on which an aluminum bar (2) and an FPC assembly (4) are installed; The cantilever of the FPC assembly (4) is close to and laminated on the aluminum bar (2), and the cantilever of the FPC assembly (4) is connected with an NTC assembly (5), the NTC assembly is limited on the aluminum bar (2) through a pin buckle (3), and the NTC assembly (5) extends to the direction of the battery cell through the blister isolation plate (1).

2. The CCS assembly developed by the button fixing NTC assembly of claim 1, wherein: The blister isolation plate (1) supports the aluminum bar (2) through a type groove, and the aluminum bar (2) is connected with the battery cell through a detection port formed in the type groove.

3. The CCS assembly developed by the button fixing NTC assembly of claim 1, wherein: The aluminum bar (2) and the FPC assembly (4) are connected with the blister isolation plate (1) through a hot riveting column (7).

4. The CCS assembly developed by the button fixing NTC assembly of claim 1, wherein: The NTC assembly (5) is connected with the surface of the battery cell through a heat conduction pad (6).

5. The CCS assembly developed by the button fixing NTC assembly of claim 1, wherein: The pin buckle (3) passes through the cantilever of the FPC assembly (4) and is clamped in the fixing hole of the aluminum bar (2).

6. The CCS assembly developed by the button fixing NTC assembly of claim 5, wherein: The cantilever of the FPC assembly (4) is rectangular, the NTC assembly (5) is located in the middle of the cantilever, and the pin buckle (3) has two and is arranged on the two sides of the NTC assembly (5).

7. The CCS assembly developed by the button fixing NTC assembly of claim 6, wherein: The cantilever of the FPC assembly (4) is located on the side edge close to the aluminum bar (2).

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