Heating structure and car heating seat

Abstract

This utility model relates to the field of automotive heated seat technology, and more particularly to a heating structure and an automotive heated seat. The heating structure includes a heating element, a positive electrode assembly, and a negative electrode assembly. The heating element includes multiple heating plates. The positive electrode assembly includes multiple positive electrode sheets, which are disposed at the first end of the heating plates. The central regions of two adjacent positive electrode sheets are electrically connected by a positive wire, and the length of the positive wire is greater than the straight-line distance between the wire and the connection point of the two positive electrode sheets. The negative electrode assembly includes multiple negative electrode sheets, which are disposed at the second end of the heating plate opposite to the first end. The central regions of two adjacent negative electrode sheets are electrically connected by a negative wire, and the length of the negative wire is greater than the straight-line distance between the wire and the connection point of the two negative electrode sheets. This device can reduce the probability of electrode sheet breakage under repeated sitting pressure, thereby reducing the possibility of arcing and erosion of the heating structure and improving the service life of the automotive seat.

Description

Technical Field

[0001] This utility model relates to the field of automotive heated seat technology, and in particular to a heating structure and an automotive heated seat. Background Technology

[0002] With the rapid development of the automotive manufacturing industry, heated seats have gradually become standard equipment in cars to meet users' needs for seat comfort. Heated seats typically use electric heating, which achieves heating and heat preservation by placing a heating element between positive and negative electrodes. Compared with other types of heating, electric heating is more convenient to implement in automobiles, and therefore has been widely adopted in the automotive manufacturing industry.

[0003] In existing technologies, copper foil electrodes are commonly used to power the heating element, with multiple heating elements connected by copper foil electrodes to form the entire heating structure. For example, a car heating pad disclosed in application number CN202310716277.3 includes a first substrate and a second substrate, with a heating component disposed between them. This component includes a heating body and a conductive component comprising a first electrode and a second electrode, both formed of conductive strips. One end of the first electrode is connected to the heating body, and the other end is electrically connected to the power supply component. The second electrode is connected to the heating body, and one end of it is electrically connected to the power supply component. The first and second electrodes are respectively connected to different ports of the power supply component. The electrodes include a main electrode, branch electrodes, and a folded structure. The folded structure connects the main electrode and the branch electrode, allowing them to extend in two different directions. This solution connects the conductive component to the heating body through the folded structure of multiple first and / or second electrodes, optimizing the overlapping and bonding connection method, resulting in more stable and sufficient contact, and avoiding the safety hazard of sparking caused by poor contact between the main electrode and the branch electrode.

[0004] The car heating pad has the following shortcomings: Although the above-mentioned folded structure ensures a reliable connection between the main electrode and the branch electrode, thereby avoiding the safety hazard of sparking caused by poor contact, in actual use, the main electrode and the branch electrode are both formed by long strip-shaped conductive strips, which are prone to breakage due to metal fatigue after repeated sitting and pressing. The broken part will also spark and burn due to poor contact, so the safety hazard of sparking and burning cannot be completely eliminated. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a heating structure and a car heated seat, which solves the technical problem that the electrodes of the prior art break after repeated sitting pressure, and the broken part is sparked and eroded due to poor contact.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] In a first aspect, the present invention provides a heating structure, including a heating element, a positive electrode assembly, and a negative electrode assembly;

[0010] The heating element includes multiple heating elements;

[0011] The positive electrode assembly includes multiple positive electrode plates, which are disposed one-to-one at the first end of the heating element, and adjacent positive electrode plates are electrically connected by a positive wire, the length of which is greater than the straight-line distance between the connection point of the positive wire and the connection point of the two positive electrode plates.

[0012] The negative electrode assembly includes multiple negative electrode plates, which are disposed one-to-one at the second end of the heating element. Adjacent negative electrode plates are electrically connected by a negative wire, the length of which is greater than the straight-line distance between the connection point of the negative electrode plates and the negative electrode plates.

[0013] Optionally, in some embodiments of the present invention, the positive electrode assembly further includes a positive connecting piece fixedly connected to the positive electrode sheet, and two adjacent positive wires are electrically connected through the positive connecting piece;

[0014] The negative electrode assembly also includes a negative connecting piece fixedly connected to the negative electrode sheet, and two adjacent negative wires are electrically connected through the negative connecting piece.

[0015] Optionally, in some embodiments of this utility model, the positive connecting piece and the negative connecting piece are square, regular hexagon, regular octagon or circle.

[0016] Optionally, in some embodiments of the present invention, the heating structure further includes two flexible support members;

[0017] One of the two flexible supports is disposed on the side of the positive electrode sheet away from the heating element, and a first clearance groove is formed on the side of the support facing the positive electrode sheet. The shape of the first clearance groove matches the shape of the positive connecting piece and the positive wire.

[0018] The other of the two flexible support members is located on the side of the negative electrode sheet away from the heating element, and a second clearance groove is formed on the side of the negative electrode sheet facing the negative electrode sheet. The shape of the second clearance groove matches the shape of the negative connecting piece and the negative wire.

[0019] Optionally, in some embodiments of this utility model, the length of the positive conductor is 1.2 to 2 times the straight-line distance between it and the connection point of the two positive electrode plates;

[0020] The length of the negative conductor is 1.2 to 2 times the straight-line distance between it and the connection point of the two negative electrode plates.

[0021] Optionally, in some embodiments of this utility model, the multiple heating elements are graphene heating strips, and the multiple graphene heating strips are strip-shaped and arranged parallel to each other.

[0022] Optionally, in some embodiments of this utility model, the positive electrode sheet and the negative electrode sheet are rectangular or S-shaped.

[0023] Optionally, in some embodiments of this invention, the corners of the positive electrode sheet and the negative electrode sheet are rounded.

[0024] Secondly, this utility model provides a heated car seat, including the heating structure described in the first aspect.

[0025] Optionally, in some embodiments of the present invention, the cushion body and an outer cover covering the outside of the cushion body are also included;

[0026] The seat cushion body includes a sponge layer, a heat insulation layer and a heat dissipation layer arranged sequentially from bottom to top, with a heating structure disposed between the heat insulation layer and the heat dissipation layer.

[0027] (III) Beneficial Effects

[0028] The beneficial effects of this utility model are as follows: The heating structure provided by this utility model includes a heating element, a positive electrode assembly, and a negative electrode assembly; the heating element includes multiple heating elements; the positive electrode assembly includes multiple positive electrode plates, which are disposed at the first end of the heating elements, and the central regions of two adjacent positive electrode plates are electrically connected by a positive conductor; and the length of the positive conductor is greater than the straight-line distance between it and the connection point of the two positive electrode plates; the negative electrode assembly includes multiple negative electrode plates, which are disposed at the second end of the heating elements opposite to the first end, and the central regions of two adjacent negative electrode plates are electrically connected by a negative conductor; and the length of the negative conductor is greater than the straight-line distance between it and the connection point of the two negative electrode plates.

[0029] In other words, the heating structure provided by this invention comprises multiple separately arranged electrode plates, with adjacent positive electrode plates connected by positive wires and adjacent negative electrode plates connected by negative wires. Compared to the prior art where all electrodes use long strip conductive strips, the multiple separately arranged positive or negative electrode plates can avoid stress concentration and reduce the probability of breakage under repeated sitting pressure. Moreover, the wires have higher strength than the thin sheet structure of conductive strips and are less likely to break after repeated sitting pressure, thereby further reducing the possibility of arcing and erosion of the heating structure and improving the service life of the car seat. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a heating structure in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of another heating structure in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of another heating structure in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of another heating structure in an embodiment of the present invention;

[0034] Figure 5 This is a side view of a heating structure in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the flexible support member in an embodiment of the present invention.

[0036] [Explanation of Labels in the Attached Image]

[0037] 1. Heating element;

[0038] 2. Positive electrode assembly; 201. Positive electrode sheet; 202. Positive wire; 203. Positive connecting piece;

[0039] 3. Negative electrode assembly; 301. Negative electrode sheet; 302. Negative wire; 303. Negative electrode sheet;

[0040] 4. Flexible support component; 401. First clearance groove. Detailed Implementation

[0041] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 5 The orientation is used as a reference.

[0042] Example 1:

[0043] like Figure 1 As shown in the figure, a heating structure proposed in this embodiment of the present invention includes a heating element 1, a positive electrode assembly 2, and a negative electrode assembly 3.

[0044] The heating element 1 includes multiple heating elements. Specifically, the multiple heating elements are graphene heating strips, which are strip-shaped and arranged parallel to each other. The graphene heating strips can be arranged parallel to each other, or distributed in other ways as needed.

[0045] The positive electrode assembly 2 includes a plurality of positive electrode plates 201, which are disposed one-to-one on the lower surface of the first end of the heating element. Adjacent positive electrode plates 201 are electrically connected by a positive conductor 202, the length of which is greater than the straight-line distance between the conductor and the connection point of the two positive electrode plates 201. Preferably, the length of the positive conductor 202 is 1.2 to 2 times the straight-line distance between it and the connection point of the two positive electrode plates 201.

[0046] Corresponding to the positive electrode assembly 2 described above, the negative electrode assembly 3 includes a plurality of negative electrode pieces 301. Each negative electrode piece 301 is disposed one-to-one on the lower surface of the second end of the heating element, and adjacent negative electrode pieces 301 are electrically connected by a negative wire 302. The length of the negative wire 302 is greater than the straight-line distance between it and the connection point of the two negative electrode pieces 301. Preferably, the length of the negative wire 302 is 1.2 to 2 times the straight-line distance between it and the connection point of the two negative electrode pieces 301.

[0047] It should be noted that the first end and the second end of the heating element are opposite each other. That is, for a graphene heating strip, the positive electrode 201 is disposed at the first end of the graphene heating strip, and the negative electrode 301 is disposed at the second end of the graphene heating strip.

[0048] The heating structure provided in this embodiment includes multiple separately arranged electrode plates. Two adjacent positive electrode plates 201 are connected by a positive wire 202, and two adjacent negative electrode plates 301 are connected by a negative wire 302. Compared to the prior art where all electrodes use long strip conductive strips, the multiple separately arranged positive electrode plates 201 or negative electrode plates 301 can avoid stress concentration and reduce the probability of breakage under repeated sitting pressure. Furthermore, the wires have higher strength than the thin conductive strip structure and are less prone to breakage after repeated sitting pressure, thereby further reducing the possibility of arcing and erosion of the heating structure and improving the service life of the car seat.

[0049] like Figure 2 As shown, preferably, the positive electrode assembly 2 further includes a positive connecting piece 203 fixedly connected to the positive electrode sheet 201, and two adjacent positive wires 202 are electrically connected through the positive connecting piece 203; the negative electrode assembly 3 further includes a negative connecting piece 303 fixedly connected to the negative electrode sheet 301, and two adjacent negative wires 302 are electrically connected through the negative connecting piece 303. Specifically, the positive connecting piece 203 and the positive electrode sheet 201 can be connected by welding, bonding with conductive materials, or heat pressing. The negative connecting piece 303 and the negative electrode sheet 301 can be connected by welding, bonding with conductive materials, or heat pressing.

[0050] Compared to existing methods of connecting wires and electrode plates via terminals or pads, the method described above, which connects wires and electrode plates using positive connecting piece 203 or negative connecting piece 303, has a larger contact area at the connection point, higher connection strength, and is less prone to loosening under repeated pressure. Furthermore, the positive connecting piece 203 or negative connecting piece 303 makes the connection between the wire and electrode plate smoother and more regular, avoiding stress concentration caused by irregular connection points in existing technologies, and making the electrode plate less prone to cracking under repeated pressure.

[0051] More preferably, the positive connecting piece is connected to the non-edge area of ​​the positive electrode sheet. Since the edge area of ​​the positive electrode sheet is more prone to stress concentration than the non-edge area, placing the positive connecting piece in the non-edge area of ​​the positive electrode sheet can further prevent the electrode sheet from breaking due to stress concentration when it is pressed.

[0052] It should be noted that the aforementioned "straight-line distance" refers to the straight-line distance between the geometric centers of the two positive connecting plates 203 connected by a positive wire 202 in the positive electrode assembly 2; and to the straight-line distance between the geometric centers of the two negative connecting plates 303 connected by a negative wire 302 in the negative electrode assembly 3. This arrangement, where the wire length is greater than the straight-line distance between its connection point with the two electrode plates, allows the positive wire 202 or negative wire 302, due to its longer length, to accommodate positional shifts caused by pressure on the heating structure, preventing the wire from pulling on the electrode plates and causing breakage.

[0053] Preferably, the positive connecting piece 203 and the negative connecting piece 303 are square, hexagonal, octagonal, or circular. More preferably, both the positive connecting piece 203 and the negative connecting piece 303 are circular. The curved edge of the circular positive connecting piece 203 can better avoid stress concentration at its connection with the positive electrode piece 201, thereby further reducing the probability of the positive electrode piece 201 breaking under repeated pressure. The working principle of the negative connecting piece 303 is the same as that of the positive connecting piece 203, and will not be described again here.

[0054] The positive electrode 201 and the negative electrode 301 can be rectangular. Preferably, the positive electrode 201 and the negative electrode 301 are as follows: Figure 3 The S-shape shown is designed to allow for more flexible deformation during repeated pressing, dispersing some stress and reducing the frequency of stress concentration. Simultaneously, the corners of the positive electrode 201 and the negative electrode 301 can also be configured as follows: Figure 4 The rounded corners shown are used to further reduce the frequency of stress concentration on the positive and negative electrode plates.

[0055] In another preferred embodiment of this invention, a flexible support can be provided above or below the electrode sheet to further reduce the potential damage to the electrode sheet caused by repeated sitting pressure. Specifically, as follows... Figure 5 and Figure 6 As shown, the heating structure also includes two flexible support members 4; one of the two flexible support members 4 is disposed on the side of the positive electrode plate 201 away from the heating element, and a first clearance groove 401 is formed on the side of the positive electrode plate 201 facing the positive electrode plate 201. The shape of the first clearance groove 401 matches the shape of the positive connecting piece 203 and the positive wire 202; the other of the two flexible support members 4 is disposed on the side of the negative electrode plate 301 away from the heating element, and a second clearance groove is formed on the side of the negative electrode plate 301 facing the negative electrode plate 301. The shape of the second clearance groove matches the shape of the negative connecting piece 303 and the negative wire 302.

[0056] In practical applications, the flexible support 4 can be a single piece similar in shape and size to the heating element, with a first clearance groove at the position corresponding to the positive electrode assembly 2 and a second clearance groove at the position corresponding to the negative electrode assembly 3; the flexible support 4 can also be multiple pieces arranged separately according to the distribution of the electrode sheets. For example, with Figure 2 Corresponding to the electrode sheet distribution shown, the flexible support 4 consists of two pieces facing each other, one of which corresponds to the positive electrode assembly 2 and has a shape facing the positive electrode assembly 2 as shown. Figure 6 As shown, the shape of the first clearance groove 401 is similar to that of the positive connecting piece 203 and the positive wire 202, and its corresponding size is slightly larger than that of the positive connecting piece 203 and the positive wire 202, so that the flexible support 4 can be more easily fastened to the side of the positive electrode piece 201 where the positive connecting piece 203 is provided during mass production. Similarly, the piece corresponding to the negative electrode assembly 3 has a second clearance groove on its side near the negative electrode piece 301. The shape of the second clearance groove matches the shape of the negative connecting piece 303 and the negative wire 302, and its corresponding size is slightly larger than that of the negative connecting piece 303 and the negative wire 302.

[0057] Furthermore, it should be noted that the flexible support 4 can be made of materials with a certain degree of deformability, such as sponge or rubber. Besides deforming in the direction of the pressure applied during sitting, it can also deform in the lateral deformation direction of the positive conductor 202 or the negative conductor 203 to adapt to some extreme pressure deformation scenarios. Additionally, the position of the first clearance groove 401 corresponding to the positive conductor can be completely hollowed out to improve the flexibility of the positive conductor 202's deformation. Similarly, the position of the second clearance groove corresponding to the negative conductor 302 can also be completely hollowed out to improve the flexibility of the negative conductor 302's deformation.

[0058] Based on the above configuration, when the heating structure is subjected to pressure, the flexible support 4, which is adjacent to the positive electrode 201 or the negative electrode 301, can absorb part of the pressure energy and deform, thereby reducing the deformation amplitude of the positive electrode 201 or the negative electrode 301 and further reducing the probability of the positive electrode 201 or the negative electrode 301 breaking under repeated pressure.

[0059] Example 2:

[0060] This embodiment provides a heated car seat, including a heated seat cushion and the heating structure of Embodiment 1. The heated seat cushion includes a seat cushion body and an outer cover covering the outside of the seat cushion body; the seat cushion body includes a sponge layer, a heat insulation layer and a heat dissipation layer arranged sequentially from bottom to top, and a heating structure is provided between the heat insulation layer and the heat dissipation layer.

[0061] The heating structure includes a heating element 1, a positive electrode assembly 2, and a negative electrode assembly 3.

[0062] Heating element 1 includes multiple heating elements. Positive electrode assembly 2 includes multiple positive electrode pieces 201, each corresponding to a first end of a heating element. Adjacent positive electrode pieces 201 are electrically connected via positive wires 202, the length of which is greater than the straight-line distance between the wire and the connection point of the two positive electrode pieces 201. Correspondingly, negative electrode assembly 3 includes multiple negative electrode pieces 301, each corresponding to a second end of a heating element. Adjacent negative electrode pieces 301 are electrically connected via negative wires 302, the length of which is greater than the straight-line distance between the wire and the connection point of the two negative electrode pieces 301.

[0063] The heating element 1 of the above heating structure faces the heat dissipation layer.

[0064] The car heated seat provided in this embodiment, based on the advantages of the heating structure described above, can reduce the probability of electrode breakage during long-term use, thereby avoiding arcing and erosion at the electrode breakage point and extending the service life of the car heated seat.

[0065] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0067] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heating structure, characterized by, It includes a heating element (1), a positive electrode assembly (2), and a negative electrode assembly (3); The heating element (1) includes multiple heating elements; The positive electrode assembly (2) includes a plurality of positive electrode plates (201), which are disposed one-to-one at the first end of the heating element, and two adjacent positive electrode plates (201) are electrically connected by a positive conductor (202), the length of which is greater than the straight-line distance between the connection point of the positive conductor (202) and the connection point of the two positive electrode plates (201). The negative electrode assembly (3) includes a plurality of negative electrode pieces (301), which are disposed one-to-one at the second end of the heating element, and two adjacent negative electrode pieces (301) are electrically connected by a negative wire (302). The length of the negative wire (302) is greater than the straight-line distance between its connection point with the two negative electrode pieces (301). The positive electrode assembly (2) further includes a positive connecting piece (203) fixedly connected to the positive electrode sheet (201), and two adjacent positive wires (202) are electrically connected through the positive connecting piece (203); the positive connecting piece (203) is connected to the non-edge area of ​​the positive electrode sheet (201); The negative electrode assembly (3) further includes a negative connecting piece (303) fixedly connected to the negative electrode sheet (301), and two adjacent negative wires (302) are electrically connected through the negative connecting piece (303); the negative connecting piece (303) is connected to the non-edge area of ​​the negative electrode sheet (301); The length of the positive conductor (202) is 1.2 to 2 times the straight-line distance between its connection point with the two positive electrode plates (201); the length of the negative conductor (302) is 1.2 to 2 times the straight-line distance between its connection point with the two negative electrode plates (301).

2. The heating structure according to claim 1, characterized in that The positive connecting piece (203) and the negative connecting piece (303) are square, regular hexagon, regular octagon or circle.

3. The heating structure of claim 1, wherein, The heating structure also includes two flexible support members (4). One of the two flexible support members (4) is disposed on the side of the positive electrode sheet (201) away from the heating element, and a first clearance groove (401) is provided on the side of the positive electrode sheet (201) facing the positive electrode sheet (201). The shape of the first clearance groove (401) matches the shape of the positive connecting piece (203) and the positive wire (202). The other of the two flexible support members (4) is located on the side of the negative electrode plate (301) away from the heating plate, and a second clearance groove is provided on the side facing the negative electrode plate (301). The shape of the second clearance groove matches the shape of the negative connecting piece (303) and the negative wire (302).

4. The heating structure of claim 1, wherein Multiple heating elements are graphene heating strips, which are arranged in a strip shape and parallel to each other.

5. The heating structure of claim 1, wherein, The positive electrode sheet (201) and the negative electrode sheet (301) are rectangular or S-shaped.

6. The heating structure of claim 1, wherein, The corners of the positive electrode sheet (201) and the negative electrode sheet (301) are rounded.

7. An automotive heating seat, characterized by Includes the heating structure as described in any one of claims 1 to 6.

8. The automotive heated seat of claim 7, wherein, It also includes a seat cushion body and an outer cover that is placed on the outside of the seat cushion body; The cushion body comprises a sponge layer, a heat insulation layer and a heat dissipation layer arranged in sequence from bottom to top, and the heating structure is arranged between the heat insulation layer and the heat dissipation layer.

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