FPC temperature sampling structure

Abstract

The application discloses a kind of FPC temperature acquisition structures, including the temperature acquisition component of connecting aluminum-based FPC, temperature acquisition component includes integrally injection-molded temperature acquisition shell and conductor structure, temperature acquisition shell includes temperature acquisition part with temperature sensor and positioning part with connecting window, conductor structure is formed by copper material connecting piece and aluminum material connecting piece composite Copper material connecting piece is extended to temperature acquisition part and connected with temperature sensor, and aluminum material connecting piece is welded with aluminum-based FPC at connecting window position, the combination of same metal is better, welding strength is high and contact area is large, improve electrical contact performance, so that temperature information collected by temperature sensor can be reliably transmitted to FPC product, this conductor structure is designed using copper-aluminum composite structure, with high bonding strength, excellent conductivity and thermal conductivity, easy to weld, low contact resistance characteristics, can meet the welding requirements of conductor structure and aluminum-based FPC, also can reduce production cost, improve product performance.

Description

Technical Field

[0001] This invention relates to the field of battery pack temperature acquisition technology, and specifically to an FPC temperature acquisition structure. Background Technology

[0002] With the increasing number of new energy vehicles on the road, the use of battery packs is also growing. Battery packs are mainly composed of multiple battery cell modules connected in series and parallel. Flexible printed circuit boards (FPCs) are used in the market to connect multiple battery modules to collect information such as battery module voltage and temperature. Existing FPCs are usually made using copper substrate as the dielectric and nickel strips and NTC components are mounted on the FPC using SMT (Surface Mount Technology) to obtain the temperature information of the battery cell modules.

[0003] With the increasing demand for automotive battery packs, more and more manufacturers are adopting aluminum-based FPCs to better control costs. This is because aluminum is relatively inexpensive, but it is a reactive metal that easily forms aluminum oxide on its surface, making it impossible to mount nickel sheets and temperature sensors on aluminum-based FPCs using traditional SMT technology. To address this, Chinese patent document CN116706579A discloses a flexible circuit board with temperature acquisition function, including an aluminum-based main circuit board and a temperature acquisition component electrically connected to the aluminum-based main circuit board. Specifically, the temperature acquisition component includes a copper-based circuit board and a temperature sensor mounted on the copper-based circuit board, as well as a connection terminal structure connecting the temperature sensor and the aluminum-based main circuit board. It also includes two reinforcing plates bonded to both sides of the copper-based circuit board. This connection terminal structure includes double-sided crimp terminals connecting the temperature sensor and the aluminum-based main circuit board. Each double-sided crimp terminal has two crimping portions at both ends, each crimping portion protruding with multiple crimping protrusions. One crimping portion is crimped into the copper-based circuit board, and the other crimping portion is crimped into the aluminum-based main circuit board.

[0004] As can be seen from the structure of the flexible circuit board described above, the following problems still exist: 1. The temperature acquisition component is pressed onto the copper-based circuit board and the aluminum-based main circuit board respectively through two crimping parts of the connecting terminal structure. The terminal crimping method requires piercing the aluminum-based main circuit board, which can easily deform or even damage the aluminum-based main circuit board at the piercing point. In addition, the electrical contact performance between the crimping terminal and the aluminum-based main circuit board is poor, and the contact surface is small, which affects the performance of the product. 2. The structure of the entire temperature acquisition component is complex, requiring the use of double-sided reinforcing plates to reinforce the copper-based circuit board, and the copper-based circuit board area is made large, which increases the production cost. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, the temperature acquisition component is pressed onto the copper-based circuit board and the aluminum-based main circuit board respectively through the connection terminal structure. This terminal pressing method is prone to deforming or even damaging the aluminum-based main circuit board, resulting in a small contact surface, poor electrical contact performance, and affecting the performance of the product.

[0006] To solve the above-mentioned technical problems, the present invention provides an FPC temperature sensing structure, comprising an aluminum-based FPC and a temperature sensing component connected to the aluminum-based FPC, characterized in that the temperature sensing component comprises:

[0007] The temperature-collecting housing includes a temperature-collecting part equipped with a temperature sensor and a positioning part that is positioned and connected to the aluminum-based FPC;

[0008] The conductor structure is integrally injection molded with the temperature sensing housing. The conductor structure includes an integrally composite molded copper connecting piece and an aluminum connecting piece. The positioning part has a connection window that exposes the aluminum connecting piece. The aluminum connecting piece is welded to the aluminum-based FPC at the connection window. The copper connecting piece extends to the temperature sensing part and is connected to the temperature sensor.

[0009] As a preferred embodiment, the positioning part is provided with a positioning plane that is in contact with the aluminum-based FPC, and at least two positioning posts are provided on the positioning plane, and at least two positioning holes are provided on the aluminum-based FPC to form a positioning fit with the positioning posts.

[0010] As a preferred embodiment, the positioning part includes two positioning plates that extend horizontally on the same side of the temperature sensing housing, and two connection windows correspondingly opened on the two positioning plates. Two conductor structures are provided at intervals inside the temperature sensing housing. The two conductor structures have two aluminum connecting pieces extending into the two connection windows, and are welded to the aluminum-based FPC at the two connection windows through the two aluminum connecting pieces.

[0011] As a preferred embodiment, the temperature sensing unit includes a temperature sensing groove disposed in the temperature sensing housing, and two conductor structures having two copper connecting pieces extending into the temperature sensing groove. The temperature sensor is attached to the two copper connecting pieces and sealed in the temperature sensing groove by potting adhesive.

[0012] As a preferred embodiment, a limiting stop is provided between the temperature sensing shell and the two positioning plates, the upper sides of the two positioning plates are respectively positioning planes that are flush, and the connecting window is a strip window that extends along the length of the positioning plate and is set with the positioning plane.

[0013] As a preferred embodiment, the main body of the conductor structure is a copper connecting piece extending from the positioning part and the temperature sensing part, and its composite part is a partial aluminum connecting piece formed on the copper connecting piece and exposed in the connection window. A portion of the copper connecting piece is accommodated in the temperature sensing tank and connected to the temperature sensor.

[0014] As a preferred embodiment, the partial aluminum connecting piece is formed along the length of the copper connecting piece extending from the positioning portion, and the copper-aluminum joint between the copper connecting piece and the aluminum connecting piece is plastically covered by the positioning portion.

[0015] As a preferred embodiment, the main body of the conductor structure is an aluminum connecting piece extending from the positioning part and the temperature sensing part, and its composite part is a partial copper connecting piece formed on the aluminum connecting piece and extending into the temperature sensing tank, with a portion of the aluminum connecting piece exposed in the connection window.

[0016] As a preferred embodiment, the partial copper connecting piece is formed along the length of the aluminum connecting piece extending from the temperature-sensing section, and the copper-aluminum joint between the copper connecting piece and the aluminum connecting piece is sealed and encapsulated by a potting compound structure in the temperature-sensing section.

[0017] As a preferred embodiment, the temperature sensing housing includes a limiting support structure that forms a positioning fit with the two conductor structures. After being positioned and connected to the two conductor structures, the limiting support structure is integrally injection molded with the temperature sensing housing.

[0018] As a preferred embodiment, the limiting support structure includes a first support platform and a second support platform that are formed relative to each other on the temperature collection shell. The first support platform is provided with a T-shaped locking platform, and two first limiting grooves are formed between the T-shaped locking platform and the first support platform with a gap. The second support platform is provided with two second limiting grooves that are spaced apart. Two conductor structures are respectively extended and positioned and inserted into the two first limiting grooves of the first support platform and the two second limiting grooves of the second support platform.

[0019] As a preferred embodiment, the temperature-collecting housing is formed with a cavity suitable for accommodating the first support platform, the second support platform, and the conductor structure. The first support platform is formed at the bottom of the temperature-collecting tank and includes two support arms extending from two positioning plates.

[0020] The technical solution of this invention has the following advantages compared with the prior art:

[0021] 1. In the FPC temperature sensing structure provided by this invention, the conductor structure is composed of copper and aluminum connecting pieces, which are integrally injection molded with the temperature sensing shell. This integral injection molding improves the overall structural strength of the product and facilitates manufacturing. The temperature sensing shell has a connection window on its positioning part exposing the aluminum connecting pieces. The aluminum connecting pieces are directly welded to the aluminum-based FPC at the connection window position. The bonding between the same metals is better, resulting in higher welding strength, a larger contact area, better connection stability, and improved electrical contact performance. This avoids the need for traditional terminal crimping of the FPC, simplifying the installation process. This design improves installation efficiency and allows the copper connecting piece to extend to the temperature sensing section and connect to the temperature sensor. It features higher thermal conductivity and electrical conductivity to meet the connection requirements of the temperature sensor, thus reliably transmitting the temperature information collected by the sensor to the FPC product via the conductor structure. The conductor structure in this technical solution adopts a copper-aluminum composite design, which features high bonding strength, excellent electrical and thermal conductivity, easy welding, and low contact resistance. By rationally optimizing the copper-aluminum ratio, it can not only meet the welding requirements between the conductor structure and the aluminum-based FPC but also reduce production costs and improve product performance.

[0022] 2. In the FPC temperature sensing structure provided by the present invention, the aluminum-based FPC is bonded to the positioning plane of the positioning part. Two positioning posts are provided on the positioning plane, and two positioning holes suitable for the two positioning posts to pass through are provided on the aluminum-based FPC. The positioning posts and positioning holes cooperate to position and install the aluminum-based FPC on the positioning part, avoiding positional displacement of the aluminum-based FPC on the positioning part, ensuring accurate welding position, facilitating welding of the aluminum-based FPC to the aluminum connecting piece, and ensuring the flatness and stability of the aluminum-based FPC welding by utilizing the positioning plane.

[0023] 3. In the FPC temperature collection structure provided by the present invention, the temperature collection part includes a temperature collection groove disposed in the temperature collection shell, and two conductor structures have two copper connecting pieces extending into the temperature collection groove. With this structure, the temperature sensor can be connected to the two copper connecting pieces using traditional mounting technology, and then sealed in the temperature collection groove by potting glue, thereby achieving a sealed connection between the temperature sensor and the copper connecting pieces in the temperature collection groove. Furthermore, since the two conductor structures are welded to the aluminum-based FPC at the connection window by two aluminum connecting pieces, a welding connection between the conductor structure and the aluminum-based FPC is achieved, realizing circuit connection between the temperature sensor and the aluminum-based FPC. The temperature sensor collects temperature information of the battery pack and transmits it to the aluminum-based FPC, thereby achieving normal temperature collection of the aluminum-based FPC and overcoming the technical problem that the aluminum-based FPC cannot perform normal temperature collection in the prior art.

[0024] 4. In the FPC temperature sensing structure provided by the present invention, when the main body of the conductor structure preferably uses a copper connecting piece, the aluminum connecting piece is formed as a composite part on the copper connecting piece and exposed at the connection window. Since the conductor structure is integrally injection molded with the temperature sensing shell, after injection molding, the copper-aluminum joint of the copper connecting piece and the aluminum connecting piece is covered by the positioning part plastic. Only the side of the aluminum connecting piece used for welding is exposed at the connection window. Since direct contact between copper and aluminum will generate a potential difference and is easily oxidized, the advantage of this design is that the periphery of the aluminum connecting piece is wrapped with plastic, which can avoid the copper-aluminum joint surface being exposed and causing copper-aluminum electrochemical corrosion reaction. The structural design is reasonable, the protection is good, and the service life of the conductor structure is improved.

[0025] 5. In the FPC temperature sensing structure provided by this invention, the limiting support structure includes a first support platform and a second support platform that form a positioning connection with the two conductor structures. After the two support platforms are assembled with the two conductor structures, they are integrally injection molded with the temperature sensing shell. After injection molding, the conductor structures are encased in plastic, leaving only the connection window position for welding the aluminum-based FPC. The advantage of this design is that the two support platforms provide positioning support for the two conductor structures in the temperature sensing shell and enhance the strength of the installation structure. During the injection molding process, the conductor structures can withstand the impact of the plastic flow rate without deformation or positional displacement, thanks to the support and fixation of the two support platforms. The installation position is accurate and reliable, ensuring product consistency. This FPC temperature sensing structure is easy to mold and manufacture, simplifies the installation structure, reduces installation parts, and allows for a smaller conductor structure area while maintaining the structural strength of the conductor structure. This also helps to reduce product volume and production costs. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A three-dimensional structural diagram of the FPC temperature collection structure provided for the invention;

[0028] Figure 2 A cross-sectional schematic diagram of the FPC temperature collection structure provided for the invention;

[0029] Figure 3 A schematic diagram of the connection structure between the temperature-collecting housing and the conductor structure provided for the invention;

[0030] Figure 4A schematic diagram of the separate structure of the temperature-collecting housing and the conductor structure provided for the invention;

[0031] Figure 5 This is a schematic diagram of the installation structure of the conductor structure and the limiting support structure of the invention.

[0032] Figure descriptions: 1. Temperature collecting shell; 11. Temperature collecting part; 111. Temperature collecting groove; 12. Positioning part; 121. Positioning plane; 122. Positioning plate; 13. Limiting stop; 2. Conductor structure; 21. Copper connecting piece; 22. Aluminum connecting piece; 3. Temperature sensor; 4. Connection window; 5. First support platform; 51. First limiting groove; 52. T-shaped clamping platform; 53. Support arm; 6. Second support platform; 61. Second limiting groove; 7. Positioning post; 8. Positioning hole; 9. Aluminum-based FPC. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] Example

[0037] This invention provides, for example Figure 1-5The diagram illustrates an FPC temperature sensing structure, comprising an aluminum-based FPC 9 and a temperature sensing component connected to the aluminum-based FPC 9. The temperature sensing component includes a temperature sensing housing 1 and a conductor structure 2 integrally injection molded with the temperature sensing housing 1. The temperature sensing housing 1 includes a temperature sensing part 11 with a temperature sensor 3 and a positioning part 12 positioned and connected to the aluminum-based FPC 9. The conductor structure 2 includes an integrally composite molded copper connecting piece 21 and an aluminum connecting piece 22. The positioning part 12 has a connection window 4 exposing the aluminum connecting piece 22. The aluminum connecting piece 22 is welded to the aluminum-based FPC at the connection window 4. The copper connecting piece 21 extends to the temperature sensing part 11 and is connected to the temperature sensor 3.

[0038] In the above embodiment, the conductor structure 2 is composed of copper connecting pieces 21 and aluminum connecting pieces 22, and is integrally injection molded with the temperature-collecting housing 1. This integral injection molding improves the overall structural strength of the product and facilitates manufacturing. The temperature-collecting housing 1 has a connection window 4 on the positioning part 12 exposing the aluminum connecting pieces 22. The aluminum connecting pieces 22 are directly welded to the aluminum-based FPC at the connection window 4. This results in better bonding between the same metals, higher welding strength, a larger contact area, better connection stability, and improved electrical contact performance. This avoids the need for traditional terminal crimping of the FPC, simplifies the installation process, and improves efficiency. The high installation efficiency, along with the extension of the copper connecting piece 21 to the temperature sensing part 11 for connection with the temperature sensor 3, provides higher thermal conductivity and electrical conductivity to meet the connection requirements of the temperature sensor 3. This allows the temperature information collected by the temperature sensor 3 to be reliably transmitted to the FPC product through the conductor structure 2. The conductor structure 2 in this technical solution adopts a copper-aluminum composite structure design, which features high bonding strength, excellent electrical and thermal conductivity, easy welding, and low contact resistance. By reasonably optimizing the copper-aluminum ratio, the welding requirements between the conductor structure 2 and the aluminum-based FPC can be met, while reducing production costs and improving product performance.

[0039] The following is combined with Figure 1-4 The specific structure of the temperature sampling housing is described in detail below:

[0040] The positioning part 12 is provided with a positioning plane 121 that is in close contact with the aluminum-based FPC9, and at least two positioning posts 7 are provided on the positioning plane 121. The aluminum-based FPC9 is provided with at least two positioning holes 8 that are positioned and engaged with the positioning posts 7. This structure allows the aluminum-based FPC9 to be positioned and installed on the positioning part 12 by the engagement of the positioning posts and positioning holes 8, thus preventing the aluminum-based FPC from shifting on the positioning part 12, ensuring accurate welding position, facilitating welding of the aluminum-based FPC9 to the aluminum connecting piece 22, and ensuring the flatness and stability of the aluminum-based FPC welding by using the positioning plane 121.

[0041] In a further preferred embodiment, the positioning part 12 includes two positioning plates 122 extending horizontally on the same side of the temperature-collecting housing 1, and two connection windows 4 correspondingly opened on the two positioning plates 122. Two conductor structures 2 are spaced apart inside the temperature-collecting housing 1. Each conductor structure 2 has two aluminum connecting pieces 22 extending into the two connection windows 4, and is welded to the aluminum-based FPC 9 at the two connection windows 4 via the two aluminum connecting pieces 22. A limiting stop 13 is provided between the temperature-collecting housing 1 and the two positioning plates 122, and the upper side of the two positioning plates 122... The aluminum-based FPC9 is positioned on two positioning plates 122 with the positioning planes 121 flush. When the aluminum-based FPC9 is positioned and installed on the two positioning plates 122, one side of the aluminum-based FPC9 fits against the limiting stop 13, realizing the limiting fit between the aluminum-based FPC9 and the limiting stop 13. This allows the aluminum-based FPC9 to be quickly positioned and connected to the two positioning plates 122. The connection window 4 is a strip-shaped window that extends along the length of the positioning plate 122 and is set on the positioning plane 121, ensuring that there is sufficient welding distance between the aluminum-based FPC9 and the aluminum connecting piece 22 at the connection window 4.

[0042] like Figure 1As shown, the temperature sensing unit 11 includes a temperature sensing groove 111 disposed in the temperature sensing housing 1, and two conductor structures 2 have two copper connecting pieces 21 extending in the temperature sensing groove 111. The temperature sensor 3 is attached to the two copper connecting pieces 21 and sealed in the temperature sensing groove 111 by potting glue. In this structural configuration, the temperature sensor 3 is preferably an NTC thermistor, which can be connected to two copper connecting pieces 21 using traditional mounting technology, and then sealed in the temperature sampling tank 111 by potting glue, thereby achieving a sealed connection between the temperature sensor 3 and the copper connecting pieces 21 in the temperature sampling tank 111. Furthermore, the two conductor structures 2 are respectively welded to the aluminum-based FPC at the connection window 4 by two aluminum connecting pieces 22, thereby achieving a welding connection between the conductor structure 2 and the aluminum-based FPC, realizing the circuit connection between the temperature sensor 3 and the aluminum-based FPC. The temperature sensor 3 collects temperature information of the battery cell and transmits it to the aluminum-based FPC 9, realizing normal temperature acquisition of the aluminum-based FPC, overcoming the technical problem that the aluminum-based FPC cannot perform normal temperature acquisition in the prior art.

[0043] In this embodiment, the conductor structure 2 is integrally stamped from a copper-aluminum composite sheet. The proportion of copper and aluminum connecting pieces can be reasonably allocated according to actual needs, but it is required that the copper connecting piece 21 is connected to the temperature sensor 3, and that the aluminum connecting piece 22 is welded to the aluminum-based FPC 9. As a preferred embodiment, refer to... Figure 4-5The main body of the conductor structure 2 is a copper connecting piece 21 extending and connecting the positioning part 12 and the temperature sensing part 11. Its composite part is a partial aluminum connecting piece 22 formed on the copper connecting piece 21 and exposed in the connection window 4. The copper connecting piece 21 is partially accommodated in the temperature sensing groove 111 and connected to the temperature sensor 3. Further, the partial aluminum connecting piece 22 is formed on the length of the copper connecting piece 21 extending in the positioning part 12. The copper-aluminum joint of the copper connecting piece 21 and the aluminum connecting piece 22 is plastically covered by the positioning part 12. As can be seen from the above structure, the proportion of copper connecting piece 21 in the conductor structure 2 is larger than that of aluminum connecting piece 22. That is, when the main body of the conductor structure 2 preferably uses copper connecting piece 21, the aluminum connecting piece 22 is formed as a composite part on the copper connecting piece 21 and exposed in the connection window 4. Since the conductor structure 2 is integrally injection molded with the temperature-collecting shell 1, after injection molding, the copper-aluminum joint of the copper connecting piece 21 and the aluminum connecting piece 22 is covered by plastic by the positioning part 12. Only the side of the aluminum connecting piece 22 used for welding is exposed at the connection window 4. Since direct contact between copper and aluminum will generate a potential difference and is easily oxidized, the advantage of this design is that the periphery of the aluminum connecting piece is wrapped with plastic, which can avoid the copper-aluminum joint surface being exposed and causing copper-aluminum electrochemical corrosion reaction. The structural design is reasonable, the protection is good, and the service life of the conductor structure is improved.

[0044] As a deformable form of the aforementioned conductor structure 2, the difference lies in that the main body of the conductor structure 2 is an aluminum connecting piece 22 extending and connecting the positioning part 12 and the temperature sensing part 11, and its composite part is a partial copper connecting piece 21 formed on the aluminum connecting piece 22 and extending into the temperature sensing groove 111. Part of the aluminum connecting piece 22 is exposed in the connection window 4. As a specific structural arrangement, the partial copper connecting piece 21 is formed on the length of the aluminum connecting piece 22 extending in the temperature sensing part 11. The copper-aluminum joint of the copper connecting piece 21 and the aluminum connecting piece 22 is sealed and covered by a potting compound structure in the temperature sensing part 11. As can be seen from the above structure, the aluminum connecting piece 22 in the conductor structure 2 has a larger proportion than the copper connecting piece 21, which can save on installation costs. That is, when the main body of the conductor structure 2 preferably uses the aluminum connecting piece, the copper connecting piece is formed as a composite part on the copper connecting piece and extends into the temperature sampling tank 111. After the temperature sensor 3 is attached to the copper connecting piece 21, the temperature sampling tank 111 needs to be filled with potting compound to seal the temperature sensor 3. The advantage of this design is that the copper-aluminum joint is sealed and covered by the potting compound structure, which can prevent the copper-aluminum joint from being exposed and causing copper-aluminum electrochemical corrosion reaction. The structure design is reasonable, the protection is good, and the service life of the conductor structure 2 is improved. Those skilled in the art can choose the specific installation method of the conductor structure 2 based on the above description, and other equivalent embodiments will not be described in detail here.

[0045] The following combination Figure 2-5 The arrangement between conductor structure 2 and temperature sensing housing 1 is described in detail:

[0046] The temperature-collecting housing 1 includes a limiting support structure that forms a positioning fit with two conductor structures 2. The limiting support structure is integrally injection molded with the temperature-collecting housing 1 after being positioned and connected to the two conductor structures 2. More preferably, the limiting support structure includes a first support platform 5 and a second support platform 6 formed opposite to each other on the temperature-collecting housing 1. The first support platform 5 is provided with a T-shaped retaining plate 52, and two spaced-apart first limiting grooves 51 are formed between the T-shaped retaining plate 52 and the first support platform 5. The second support platform 6 is correspondingly provided with two spaced-apart second limiting grooves 61. The two conductor structures 2 extend and are respectively positioned and inserted into the two first limiting grooves 51 of the first support platform and the two second limiting grooves 61 of the second support platform 6. The two conductor structures 2 are respectively positioned and connected to the two support platforms through the first limiting grooves 51 and the second limiting grooves 61. After assembling the two support platforms and the two conductor structures 2 together, they are then integrally injection molded with the temperature-collecting housing 1. The product is now integrally injection molded. After injection molding, the conductor structure 2 is encased in plastic. Only the positioning plate 122 of the temperature-sensing housing 1 has a reserved connection window for welding the aluminum-based FPC. The advantage of this design is that the two support platforms provide positioning support for the two conductor structures 2 in the temperature-sensing housing 1 and enhance the strength of the installation structure. During the injection molding process, the conductor structure 2 can withstand the impact of the plastic flow without deformation or positional displacement, thanks to the support and fixation of the two support platforms. The installation position is accurate and reliable, ensuring product consistency. This FPC temperature-sensing structure has a simple structure. The integral injection molding of the temperature-sensing housing 1 and the conductor structure 2 results in high bonding strength, good electrical insulation, and convenient molding and manufacturing. It simplifies the installation structure, reduces installation parts, and allows for a smaller area of ​​the conductor structure 2 while maintaining its structural strength. This also helps to reduce product volume and lower production costs.

[0047] In a further preferred configuration, the temperature-collecting housing 1 is formed with a cavity suitable for accommodating the first support platform 5, the second support platform 6, and the conductor structure 2. The first support platform 5 is formed at the bottom of the temperature-collecting tank 111. The first support platform 5 includes two support arms 53 extending into the two positioning plates 122. The portion of the two conductor structures 2 with aluminum connecting pieces 22 is also extended into the two positioning plates 122. The two support arms 53 provide support for the two conductor structures 2 on the two positioning plates 122, and in particular, can support and strengthen the structural strength of the aluminum connecting pieces 22 exposed at the connection window 4, ensuring the welding strength and connection reliability of the aluminum connecting pieces 22 and the aluminum-based FPC9.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An FPC temperature sensing structure, comprising an aluminum-based FPC (9) and a temperature sensing component connected to the aluminum-based FPC (9), characterized in that, The temperature acquisition component includes: The temperature-collecting housing (1) includes a temperature-collecting part (11) equipped with a temperature sensor (3) and a positioning part (12) that is positioned and connected to the aluminum-based FPC (9); The conductor structure (2) is integrally injection molded with the temperature-collecting housing (1). The conductor structure (2) includes an integrally composite copper connecting piece (21) and an aluminum connecting piece (22). The positioning part (12) has a connection window (4) that exposes the aluminum connecting piece (22). The aluminum connecting piece (22) is welded to the aluminum-based FPC (9) at the connection window (4). The copper connecting piece (21) extends to the temperature-collecting part (11) and is connected to the temperature sensor (3). The main body of the conductor structure (2) is a copper connecting piece (21) extending and connecting the positioning part (12) and the temperature collecting part (11). Its composite part is a partial aluminum connecting piece (22) formed on the copper connecting piece (21) and exposed in the connection window (4). The copper connecting piece (21) is partially accommodated in the temperature collecting groove (111) and connected to the temperature sensor (3). The partial aluminum connecting piece (22) is formed on the length of the copper connecting piece (21) extending in the positioning part (12). The copper-aluminum joint of the copper connecting piece (21) and the aluminum connecting piece (22) is plastically covered by the positioning part (12). Alternatively; the main body of the conductor structure (2) is an aluminum connecting piece (22) extending and connected to the positioning part (12) and the temperature receiving part (11), and its composite part is a partial copper connecting piece (21) formed on the aluminum connecting piece (22) and extending into the temperature receiving tank (111). Part of the aluminum connecting piece (22) is exposed in the connection window (4). The partial copper connecting piece (21) is formed on the length of the aluminum connecting piece (22) extending in the temperature receiving part (11). The copper-aluminum joint of the copper connecting piece (21) and the aluminum connecting piece (22) is sealed and covered by the potting compound structure in the temperature receiving part (11).

2. The FPC temperature sampling structure according to claim 1, characterized in that: The positioning part (12) is provided with a positioning plane (121) that is in contact with the aluminum-based FPC (9), and at least two positioning posts (7) are provided on the positioning plane (121). The aluminum-based FPC (9) is provided with at least two positioning holes (8) that are in positional cooperation with the positioning posts (7).

3. The FPC temperature sampling structure according to claim 2, characterized in that: The positioning part (12) includes two positioning plates (122) extending horizontally on the same side of the temperature collecting housing (1) and two connection windows (4) correspondingly opened on the two positioning plates (122). The conductor structure (2) is provided in two spaced apart inside the temperature collecting housing (1). The two conductor structures (2) have two aluminum connecting pieces (22) extending into the two connection windows (4) and are welded to the aluminum-based FPC (9) at the two connection windows (4) through the two aluminum connecting pieces (22).

4. The FPC temperature sampling structure according to claim 1, characterized in that: The temperature sensing unit (11) includes a temperature sensing groove (111) disposed in the temperature sensing housing (1), and two conductor structures (2) have two copper connecting pieces (21) extending in the temperature sensing groove (111). The temperature sensor (3) is attached to the two copper connecting pieces (21) and sealed in the temperature sensing groove (111) by potting glue.

5. The FPC temperature sampling structure according to claim 3, characterized in that: A limiting stop (13) is provided between the temperature collection housing (1) and the two positioning plates (122). The upper sides of the two positioning plates (122) are respectively a positioning plane (121) that is flush with each other. The connecting window (4) is a strip window that extends along the length of the positioning plate (122) and is set with the positioning plane (121).

6. An FPC temperature sampling structure according to any one of claims 1-5, characterized in that: The temperature-collecting housing (1) includes a limiting support structure that forms a positioning fit with two conductor structures (2). After the limiting support structure is positioned and connected to the two conductor structures (2), it is integrally injection molded with the temperature-collecting housing (1).

7. The FPC temperature sampling structure according to claim 6, characterized in that: The limiting support structure includes a first support platform (5) and a second support platform (6) formed relative to the temperature collection shell (1). The first support platform (5) is provided with a T-shaped locking platform (52). Two first limiting grooves (51) are formed between the T-shaped locking platform (52) and the first support platform (5). The second support platform (6) is provided with two second limiting grooves (61) that are spaced apart. Two conductor structures (2) are respectively extended and positioned and inserted into the two first limiting grooves (51) of the first support platform (5) and the two second limiting grooves (61) of the second support platform (6).

8. The FPC temperature sampling structure according to claim 7, characterized in that: The temperature collection housing (1) has a cavity formed inside, which is suitable for accommodating the first support platform (5), the second support platform (6) and the conductor structure (2). The first support platform (5) is formed at the bottom of the temperature collection tank (111). The first support platform (5) includes two support arms (53) extending in two positioning plates (122).

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