A sampling circuit structure and a battery pack
By setting conductive parts on two surfaces of the board body and utilizing vertical space, the problem of large space occupation of the sampling circuit structure is solved, achieving higher space utilization and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-10
AI Technical Summary
The existing sampling line structure occupies a large installation space in the battery pack, resulting in low space utilization.
The design employs a double-sided arrangement, with the conductive parts respectively placed on two opposite surfaces of the board body along the first direction. This utilizes vertical space to reduce lateral dimensions, and electrical connections between the conductive parts are achieved through a cover film and connectors.
This effectively reduces the installation space occupied by the board body in the battery pack, improves space utilization, and enhances the safety of the battery pack and the accuracy of data acquisition.
Smart Images
Figure CN224481180U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of battery technology, specifically relating to a sampling circuit structure and a battery pack. Background Technology
[0002] With the continuous development of battery technology, battery packs are being used more and more widely. To ensure the normal operation of the battery, the battery management system needs to detect parameters such as voltage and temperature of the battery pack. The battery management system connects to the battery module through a sampling circuit structure to obtain data on relevant parameters of the battery module.
[0003] In the prior art, the sampling line structure usually includes a board body and multiple sampling lines disposed on the board body. It is usually electrically connected to the battery management system through the conductive parts of the multiple sampling lines. However, in order to ensure sufficient creepage distance, a certain distance needs to be maintained between adjacent conductive parts, which makes the lateral dimension of the board body larger, thereby increasing the installation space occupied by the sampling line structure in the battery pack. Utility Model Content
[0004] This application aims to provide a sampling line structure and a battery pack to solve the problem that existing sampling line structures occupy a large installation space in the battery pack.
[0005] To solve the above-mentioned technical problems, this application is implemented as follows:
[0006] In a first aspect, this application discloses a sampling circuit structure having a first direction and a second direction perpendicular to each other, including: a board body and a plurality of sampling lines, wherein the plurality of sampling lines are spaced apart inside the board body along the second direction, and each sampling line has a conductive part at least one end, the board body includes a first surface and a second surface disposed opposite to each other along the first direction, and the plurality of conductive parts are spaced apart on the first surface and the second surface, wherein the conductive parts are used for electrical connection with external components.
[0007] Optionally, the plate body includes a first covering film and a second covering film. The first covering film forms the first surface on the side opposite to the second covering film, and the second covering film forms the second surface on the side opposite to the first covering film. The first covering film and the second covering film are stacked sequentially along the first direction, and multiple sampling lines are arranged side by side between the first covering film and the second covering film.
[0008] The first covering film has a plurality of first openings spaced apart at positions opposite to the conductive portion, and a portion of the conductive portion is exposed through the first openings;
[0009] The second cover film has a plurality of second openings spaced apart at positions opposite to the conductive portion, and another portion of the conductive portion is exposed through the second openings.
[0010] Optionally, a gap is formed between two adjacent sampling lines, and at least one of the first cover film and the second cover film is provided with an extension that extends into the gap and connects to the other to isolate the two adjacent sampling lines.
[0011] Optionally, the first covering film and the second covering film are integrally connected.
[0012] Optionally, the plate body includes a third cover film, a substrate, and a fourth cover film, wherein the third cover film forms the first surface on the side opposite to the substrate, and the fourth cover film forms the second surface on the side opposite to the substrate.
[0013] The third cover film, the substrate, and the fourth cover film are stacked sequentially along the first direction. Among the multiple sampling lines, a portion of the sampling lines are arranged side by side between the third cover film and the substrate, and another portion of the sampling lines are arranged side by side between the substrate and the fourth cover film.
[0014] The third covering film has a third opening at a position opposite to the conductive part, and the conductive part is exposed through the third opening;
[0015] The fourth covering film has a fourth opening at a position opposite to the conductive part, and the conductive part is exposed through the fourth opening.
[0016] Optionally, the orthographic projection of the conductive portion of the first surface along the first direction onto a plane perpendicular to the first direction is a first projection, and the orthographic projection of the conductive portion of the second surface along the first direction onto a plane perpendicular to the first direction is a second projection, wherein the first projection and the second projection are misaligned.
[0017] Optionally, the sampling circuit structure further includes a connector, which is connected to the board body and to the conductive parts on the first surface and the second surface, and the connector is used to realize the electrical connection between the conductive parts and external components.
[0018] Optionally, the connector includes a housing and an electrical connector disposed within the housing. The electrical connector includes a first electrical connection portion and a second electrical connection portion disposed opposite to each other. The first electrical connection portion is connected to the conductive portion on the first surface, and the second electrical connection portion is connected to the conductive portion on the second surface.
[0019] Optionally, it also includes a sampling element connected to the end of the sampling line away from the conductive part, the sampling element being used for electrical connection with the battery module.
[0020] Secondly, this application also discloses a battery pack, comprising:
[0021] Battery module;
[0022] Battery management system;
[0023] And the sampling line structure described in any of the above, wherein the sampling line structure is connected between the battery management system and the battery module.
[0024] In this embodiment of the application, by separately arranging the conductive parts on two opposing surfaces of the board body along the first direction, the vertical space is effectively utilized and the size of the board body in the second direction is reduced. This double-sided arrangement design reduces the space occupied by the board body in the battery pack installation and improves the space utilization rate of the battery pack.
[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0027] Figure 1 This is one of the structural schematic diagrams of a sampling line structure described in the embodiments of this application;
[0028] Figure 2 This is a second schematic diagram of a sampling line structure described in an embodiment of this application.
[0029] Figure 3 yes Figure 1 An enlarged structural schematic diagram of the first surface at point A shown;
[0030] Figure 4 yes Figure 1 A magnified structural diagram of the second surface at point A shown;
[0031] Figure 5 yes Figure 4 A schematic diagram of the cross-section along the AA direction is shown.
[0032] Figure 6 yes Figure 4 A schematic diagram of the cross-section along the BB direction is shown.
[0033] Figure 7 yes Figure 4A schematic diagram of the cross-section along the C-C direction is shown.
[0034] Figure 8 yes Figure 2 One of the enlarged structural schematic diagrams of the first surface at point B shown;
[0035] Figure 9 yes Figure 2 One of the enlarged structural schematic diagrams of the second surface at point B shown;
[0036] Figure 10 yes Figure 8 A schematic diagram of the cross-section along the A1-A1 direction shown;
[0037] Figure 11 yes Figure 8 A schematic diagram of the cross-section along the B1-B1 direction is shown.
[0038] Figure 12 yes Figure 8 A schematic diagram of the cross-section along the C1-C1 direction is shown.
[0039] Figure 13 yes Figure 2 The second enlarged structural schematic diagram of the first surface at point B;
[0040] Figure 14 yes Figure 2 The second enlarged structural diagram of the second surface at point B shown.
[0041] Figure 15 yes Figure 13 Schematic diagram of the cross section along the D-D direction shown.
[0042] Figure 16 This is a cross-sectional schematic diagram of a connector for a sampling circuit structure as described in an embodiment of this application;
[0043] Figure 17 This is one of the structural schematic diagrams of a battery pack described in the embodiments of this application;
[0044] Figure 18 This is a second schematic diagram of the structure of a battery pack as described in the embodiments of this application.
[0045] Reference numerals: 1 - Sampling circuit structure; 10 - Board body; 101 - Sampling circuit; 102 - First surface; 103 - Second surface; 104 - Conductive part; 105 - Sampling element; 106 - First cover film; 1061 - First opening; 107 - Second cover film; 1071 - Second opening; 108 - Substrate; 109 - Third cover film; 1091 - Third opening; 1010 - Fourth cover film; 10101 - Fourth opening; 11 - Connector; 111 - Housing; 112 - Electrical connector; 1121 - First electrical connection part; 1122 - Second electrical connection part; 2 - Battery module; 20 - Battery cell; X - First direction; Y - Second direction. Detailed Implementation
[0046] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0047] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0049] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0050] This application provides a sampling circuit structure, which can be used in battery packs in practical applications. The sampling circuit structure of this application will be described in detail below with reference to the accompanying drawings.
[0051] Reference Figures 1-16 This application discloses a sampling circuit structure 1 with a first direction X and a second direction Y perpendicular to each other. The sampling circuit structure 1 may include a board body 10 and a plurality of sampling lines 101. The plurality of sampling lines 101 are spaced apart inside the board body 10 along the second direction Y. Each sampling line 101 has a conductive part 104 at at least one end. The board body 10 includes a first surface 102 and a second surface 103 disposed opposite to each other along the first direction X. The plurality of conductive parts 104 are spaced apart and exposed on the first surface 102 and the second surface 103 respectively. The conductive parts 104 are used for electrical connection with external components.
[0052] The first direction X is as follows: Figure 5 The X-axis direction is shown, and the second direction Y is as follows: Figure 5 The Y-axis direction shown is perpendicular to the first direction X and the second direction Y. Specifically, in this embodiment, the first direction X is the thickness direction of the plate body 10, and the second direction Y is the width direction of the plate body 10.
[0053] Multiple sampling lines 101 are arranged side by side along the second direction Y on the board body 10. Each sampling line 101 has a conductive part 104 at the same end. The conductive part 104 can be a gold finger. One end of the sampling line 101 is electrically connected to the battery pack, and the other end is electrically connected to external components through the conductive part 104, so that the battery pack information collected by the sampling line 101 can be transmitted to external components.
[0054] In this embodiment, by distributing the conductive portions 104 on two opposing surfaces of the plate body 10 along the first direction X, the vertical space in the first direction is effectively utilized, reducing the size of the plate body 10 in the second direction Y (lateral direction). This double-sided arrangement design reduces the space occupied by the plate body 10 in the battery pack installation, improving the space utilization rate of the battery pack.
[0055] Optionally, the plate body 10 includes a first cover film 106 and a second cover film 107. The first cover film 106 forms a first surface 102 on the side opposite to the second cover film 107, and the second cover film 107 forms a second surface 103 on the side opposite to the first cover film 106. The first cover film 106 and the second cover film 107 are stacked sequentially along the first direction X. Multiple sampling lines 101 are arranged side by side between the first cover film 106 and the second cover film 107. The first cover film 106 has multiple first openings 1061 spaced apart at positions opposite to the conductive parts 104, and some of the conductive parts 104 are exposed through the first openings 1061. A portion of the second cover film 107 has multiple second openings 1071 spaced apart at positions opposite to the conductive parts 104, and the conductive parts 104 are exposed through the second openings 1071.
[0056] Specifically, sampling line 101 can be multiple copper lines or multiple lines formed by etching copper foil, such as... Figure 1 , Figures 3-7 As shown, a sampling line structure 1 provided in an embodiment of this application is provided. The sampling line 101 in the sampling line structure 1 consists of multiple copper wires. The specific process can be as follows: first, straighten the coiled copper wires, and then press a first covering film 106 onto the upper surface of the straightened copper wires along the first direction X, and press a second covering film 107 onto the lower surface.
[0057] like Figure 2 , Figures 8-12 As shown, another embodiment of this application provides a first sampling line structure 1. The sampling line 101 in the sampling line structure 1 is a plurality of lines formed by etching copper foil. The specific process can be as follows: first, a second cover film 107 is pressed onto the lower surface of the copper foil along the first direction X; then, the copper foil is etched into the required plurality of lines by an etching process; finally, a first cover film 106 is pressed onto the upper surface of the sampling line 101 along the first direction X. In this way, by placing the sampling line 101 between the first cover film 106 and the second cover film 107, the first cover film 106 and the second cover film 107 can serve to insulate and protect the sampling line 101.
[0058] like Figure 3 and Figure 8 As shown, the first cover film 106 is provided with a plurality of first openings 1061 at intervals corresponding to the conductive part 104, the first openings 1061 being as follows: Figure 3 As shown in the black rectangle, the conductive part 104 is exposed at the first opening 1061, thus exposing the conductive part 104 on the first surface 102, as shown. Figure 4 and Figure 9 As shown, the second cover film 107 is provided with a plurality of second openings 1071 at intervals corresponding to the conductive portion 104, the second openings 1071 being as follows: Figure 4As shown in the black rectangle, the conductive part 104 is exposed through the second opening 1071, thus exposing the conductive part 104 on the second surface 103. In this embodiment, by setting the first opening 1061 and the second opening 1071 respectively, the conductive part 104 can be exposed on the two opposing first covering films 106 and second covering films 107. This distributes the lateral space that the conductive part 104 originally needed to occupy to the vertical direction of the first direction X, thereby reducing the size of the sampling line structure 1 in the second direction Y (lateral direction) and further reducing the space occupied by the sampling line structure 1 in the battery pack installation.
[0059] Optionally, a gap is formed between two adjacent sampling lines 101. At least one of the first cover film 106 and the second cover film 107 is provided with an extension that extends into the gap and connects to the other to isolate the two adjacent sampling lines 101. Specifically, both the first cover film 106 and the second cover film 107 are provided with extensions that extend into the gap and connect to each other. More specifically, the extensions of the two films can be integrally connected.
[0060] Specifically, such as Figure 5 and Figure 10 As shown, at the interval between any two adjacent sampling lines 101, the extensions of the first cover film 106 and the second cover film 107 extend into the gap and are connected to each other, so that the two adjacent sampling lines 101 are physically isolated. This can prevent the sampling lines 101 from short-circuiting and improve the safety of the sampling line structure 1. In addition, isolating the adjacent sampling lines 101 can also prevent electromagnetic interference between different sampling lines 101, ensure that the signal transmitted by each sampling line 101 remains pure, and improve the accuracy and reliability of data acquisition.
[0061] Optionally, the first covering film 106 and the second covering film 107 are integrally connected.
[0062] Specifically, the first cover film 106 and the second cover film 107 can be the same sheet material, that is, the first cover film 106 and the second cover film 107 are an integral structure. The same sheet material is folded into two layers, which serve as the first cover film 106 and the second cover film 107 respectively. The first cover film 106, the sampling line 101 and the second cover film 107 are connected together by means of hot pressing, bonding and other connection methods. In addition, the first opening 1061 and the second opening 1071 are pre-cut on the first cover film 106 and the second cover film 107 at the positions where the conductive part 104 needs to be exposed, through processes such as cutting and stamping, to ensure that the conductive part 104 can be exposed on the opposite surface.
[0063] In practical applications, since the first covering film 106 and the second covering film 107 are an integral structure, the gap between the first covering film 106 and the second covering film 107 is reduced, providing a better sealing effect and preventing external factors such as moisture from entering the sampling line 101, thus improving the safety of the sampling line structure 1. In addition, the integral structure reduces the steps of separately cutting and assembling the two covering films, reducing production complexity and improving production efficiency.
[0064] Optionally, the plate body 10 includes a third cover film 109, a substrate 108, and a fourth cover film 1010. The third cover film 109 forms a first surface 102 on the side opposite to the substrate 108, and the fourth cover film 1010 forms a second surface 103 on the side opposite to the substrate 108. The third cover film 109, the substrate 108, and the fourth cover film 1010 are stacked sequentially along the first direction X. Among the multiple sampling lines 101, a portion of the sampling lines 101 are arranged side by side between the third cover film 109 and the substrate 108, and another portion of the sampling lines 101 are arranged side by side between the substrate 108 and the fourth cover film 1010. The third cover film 109 has a third opening 1091 at a position opposite to the conductive part 104, and the conductive part 104 is exposed through the third opening 1091. The fourth cover film 1010 has a fourth opening 10101 at a position opposite to the conductive part 104, and the conductive part 104 is exposed through the fourth opening 10101.
[0065] like Figure 2 , Figures 13-15 The diagram shows a second sampling line structure 1 in another embodiment of this application. Both the first and second sampling line structures 1 have sampling lines 101 formed by etching copper foil. The difference lies in that the sampling line 101 in the first sampling line structure 1 is a single layer, positioned between the first cover film 106 and the second cover film 107. The sampling line 101 in the second sampling line structure 1 is a double layer. The specific process is as follows: the substrate 108 has copper foil on two surfaces along the first direction X; the two copper foils are etched to form the required multiple lines; finally, the third cover film 109 and the fourth cover film 1010 are pressed onto the two layers of lines.
[0066] like Figure 13 As shown, a third opening 1091 is provided on the third cover film 109 corresponding to the conductive part 104, and the third opening 1091 is as follows: Figure 13 As shown in the black rectangular box, the conductive part 104 is exposed at the third opening 1091, thus exposing the conductive part 104 on the first surface 102, as shown. Figure 14 As shown, the fourth cover film 1010 is provided with a fourth opening 10101 corresponding to the conductive part 104, and the fourth opening 10101 is as follows: Figure 14As shown in the black rectangle, the conductive part 104 is exposed through the fourth opening 10101, thus exposing the conductive part 104 on the second surface 103.
[0067] In this embodiment, the multiple conductive parts 104 of the double-layer sampling line 101 can be exposed on the two opposing third cover films 109 and fourth cover films 1010 through the third opening 1091 and the fourth opening 10101. This allows the space in the second direction Y (lateral) that the multiple conductive parts 104 of the double-layer sampling line 101 would originally occupy to be distributed in the first direction X, thereby reducing the size of the double-layer sampling line structure 1 in the second direction Y (lateral) and further reducing the space occupied by the sampling line structure 1 in the battery pack installation space.
[0068] Optionally, the orthographic projection of the conductive portion 104 of the first surface 102 along the first direction X onto a plane perpendicular to the first direction X is the first projection, and the orthographic projection of the conductive portion 104 of the second surface 103 along the first direction X onto a plane perpendicular to the first direction X is the second projection, and the first projection and the second projection are staggered.
[0069] Specifically, a plurality of conductive portions 104 on the first surface 102 are evenly arranged along the second direction Y, and a plurality of conductive portions 104 on the second surface 103 are evenly arranged along the second direction Y. The conductive portions 104 on the second surface 103 are offset by a certain distance relative to the conductive portions 104 on the first surface 102 along the second direction Y, so that the conductive portions 104 on the first surface 102 and the conductive portions 104 on the second surface 103 form a staggered arrangement, so that the first projection of the conductive portions 104 on the first surface 102 along the first direction X and the second projection of the conductive portions 104 on the second surface 103 along the first direction X are staggered.
[0070] In practical applications, by staggering the multiple exposed conductive parts 104 on the first surface 102 with the multiple exposed conductive parts 104 on the second surface 103, the distance between two adjacent exposed conductive parts 104 on the same surface along the first direction X is increased, thereby increasing the creepage distance between two adjacent conductive parts 104 and improving the safety of the sampling line structure 1.
[0071] Optionally, the distance between two adjacent sampling lines 101 along the second direction Y is a, where a satisfies: a≥0.2mm.
[0072] Specifically, such as Figure 3As shown, two adjacent sampling lines 101 need to have a certain distance a along the second direction Y, which is greater than or equal to 0.2 mm. Since 0.2 mm is a small size, the minimum distance between two adjacent sampling lines 101 in the second direction Y can be 0.2 mm. This reduces the distance between two adjacent sampling lines 101, so that more sampling lines 101 can be accommodated within the same second direction Y (lateral) width without increasing the second direction Y (lateral) dimension. This reduces the need to increase the lateral dimension to accommodate more sampling lines 101 and improves the space utilization of the sampling line structure 1.
[0073] It should be noted that two adjacent sampling lines 101 refer to two sampling lines 101 whose projections in the first direction X are adjacent.
[0074] Optionally, the sampling line structure 1 further includes a connector 11, which is connected to the board body 10 and to the conductive part 104 on the first surface 102 and the second surface 103. The connector 11 is used to realize the electrical connection between the conductive part 104 and external components.
[0075] Specifically, such as Figure 16 As shown, one end of the board body 10, which has a conductive portion 104, is connected to a connector 11. The connector 11 is electrically connected to the conductive portions 104 of the first surface 102 and the second surface 103. The connector 11 can be used to realize the electrical connection between the conductive portions 104 of the two surfaces and external components. In practical applications, the design of the connector 11 makes the connection between the conductive portions 104 and external components simpler and faster, reducing assembly time and cost.
[0076] Optionally, the connector 11 includes a housing 111 and an electrical connector 112 disposed within the housing 111. The electrical connector 112 includes a first electrical connection portion 1121 and a second electrical connection portion 1122 disposed opposite to each other. The first electrical connection portion 1121 is connected to a conductive portion 104 on a first surface 102, and the second electrical connection portion 1122 is connected to a conductive portion 104 on a second surface 103.
[0077] like Figure 16 As shown, a receiving cavity is provided inside the housing 111, and the electrical connector 112 is disposed inside the receiving cavity. The housing 111 can protect the electrical connector 112 and the conductive part 104.
[0078] One end of the housing 111 has an opening, and the end of the plate body 10 with a conductive part 104 extends into the receiving cavity. The electrical connector 112 includes a first electrical connector 1121 and a second electrical connector 1122 disposed opposite to each other along a first direction X. The first electrical connector 1121 is electrically connected to the conductive part 104 on the first surface 102, and the second electrical connector 1122 is electrically connected to the conductive part 104 on the second surface 103. The electrical connector 112 is then electrically connected to external components. In this embodiment, by connecting the first electrical connector 1121 and the second electrical connector 1122 to the conductive parts 104 on the first surface 102 and the second surface 103 respectively, the connector 11 can simultaneously make electrical connections to the conductive parts 104 on both surfaces of the plate body 10, thereby achieving efficient connection between the conductive parts 104 and external components.
[0079] Optionally, it also includes a sampling element 105, which is connected to the end of the sampling line 101 away from the conductive part 104, and is used to electrically connect to the battery module 2.
[0080] like Figure 1 and Figure 2 As shown, the end of the plate body 10 away from the conductive part 104 is provided with multiple branch structures. The other ends of the multiple sampling lines 101 away from the conductive part 104 are respectively provided in the multiple branch structures. There are multiple sampling elements 105. The multiple sampling elements 105 are respectively soldered to the sampling lines 101 provided on the multiple branch structures. The sampling elements 105 can be nickel sheets, etc. The sampling elements 105 are electrically connected to the battery module 2, and thus the information of the battery module 2 can be collected through the sampling elements 105.
[0081] In summary, the sampling line structure 1 described in the embodiments of this application may include at least the following advantages:
[0082] In this embodiment of the application, by disposing the conductive parts 104 on two opposite surfaces of the board body 10 along the first direction X, the vertical space in the first direction X is effectively utilized, and the size of the board body 10 in the second direction Y (lateral direction) is reduced. This double-sided arrangement design reduces the space occupied by the board body 10 for battery pack installation and improves the space utilization rate of the battery pack.
[0083] This application also discloses a battery pack, including: a battery module 2; a battery management system; and a sampling line structure 1 of any of the above embodiments, wherein the sampling line structure 1 is connected between the battery management system and the battery module 2.
[0084] Specifically, such as Figure 17 and Figure 18As shown, the battery module 2 includes multiple cells 20. A sampling element 105 in the sampling circuit structure 1 is soldered to a cell 20. One end of the sampling circuit structure 1, which is provided with a conductive part 104, is electrically connected to the battery management system. Thus, the information of each cell 20 in the battery module 2 can be collected through the sampling circuit structure 1 and transmitted to the battery management system.
[0085] It should be noted that in this embodiment, the structure of the sampling line structure 1 is the same as that of the sampling line structure 1 in any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here.
[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0087] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A sampling line structure having a first direction (X) and a second direction (Y) perpendicular to each other, characterized in that, include: The board body (10) and multiple sampling lines (101) are arranged at intervals along the second direction (Y) inside the board body (10). Each sampling line (101) has a conductive part (104) at at least one end. The board body (10) includes a first surface (102) and a second surface (103) arranged opposite to each other along the first direction (X). Multiple conductive parts (104) are arranged at intervals and exposed on the first surface (102) and the second surface (103) respectively. The conductive parts (104) are used for electrical connection with external components.
2. The sampling line structure according to claim 1, characterized in that, The plate body (10) includes a first covering film (106) and a second covering film (107). The first covering film (106) forms a first surface (102) on the side away from the second covering film (107), and the second covering film (107) forms a second surface (103) on the side away from the first covering film (106). The first covering film (106) and the second covering film (107) are stacked sequentially along the first direction (X), and multiple sampling lines (201) are arranged side by side between the first covering film (106) and the second covering film (107). The first covering film (106) has a plurality of first openings (1061) spaced apart at positions opposite to the conductive part (104), and part of the conductive part (104) is exposed through the first openings (1061); The second covering film (107) has a plurality of second openings (1071) spaced apart at positions opposite to the conductive part (104), and another part of the conductive part (104) is exposed through the second openings (1071).
3. The sampling line structure according to claim 2, characterized in that, A gap is formed between two adjacent sampling lines (101), and at least one of the first cover film (106) and the second cover film (107) is provided with an extension that extends into the gap and connects to the other to isolate the two adjacent sampling lines (101).
4. The sampling line structure according to claim 2, characterized in that, The first covering film (106) and the second covering film (107) are integrally connected.
5. The sampling line structure according to claim 1, characterized in that, The plate body (10) includes a third cover film (109), a substrate (108), and a fourth cover film (1010). The third cover film (109) forms the first surface (102) on the side away from the substrate (108), and the fourth cover film (1010) forms the second surface (103) on the side away from the substrate (108). The third cover film (109), the substrate (108), and the fourth cover film (1010) are stacked sequentially along the first direction (X). Among the multiple sampling lines (101), a portion of the sampling lines (101) are arranged side by side between the third cover film (109) and the substrate (108), and another portion of the sampling lines (101) are arranged side by side between the substrate (108) and the fourth cover film (1010). The third covering film (109) has a third opening (1091) at a position opposite to the conductive part (104), and the conductive part (104) is exposed through the third opening (1091); The fourth covering film (1010) has a fourth opening (10101) at a position opposite to the conductive part (104), and the conductive part (104) is exposed through the fourth opening (10101).
6. The sampling line structure according to any one of claims 1-5, characterized in that, The orthographic projection of the conductive portion (104) of the first surface (102) along the first direction (X) onto a plane perpendicular to the first direction (X) is a first projection, and the orthographic projection of the conductive portion (104) of the second surface (103) along the first direction (X) onto a plane perpendicular to the first direction (X) is a second projection. The first projection and the second projection are misaligned.
7. The sampling line structure according to claim 1, characterized in that, The sampling circuit structure further includes a connector (11), which is connected to the board body (10) and to the conductive part (104) on the first surface (102) and the second surface (103). The connector (11) is used to realize the electrical connection between the conductive part (104) and external components.
8. The sampling line structure according to claim 7, characterized in that, The connector (11) includes a housing (111) and an electrical connector (112) disposed within the housing (111). The electrical connector (112) includes a first electrical connection portion (1121) and a second electrical connection portion (1122) disposed opposite to each other. The first electrical connection portion (1121) is connected to the conductive portion (104) on the first surface (102), and the second electrical connection portion (1122) is connected to the conductive portion (104) on the second surface (103).
9. The sampling line structure according to any one of claims 1-5, characterized in that, It also includes a sampling element (105), which is connected to the end of the sampling line (101) away from the conductive part (104) and is used to be electrically connected to the battery module (2).
10. A battery pack, characterized in that, include: Battery module (2); Battery management system; And the sampling line structure (1) according to any one of claims 1-9, wherein the sampling line structure (1) is connected between the battery management system and the battery module (2).