A special-shaped heating pad body

Abstract

The present application discloses a special-shaped heating pad body, which relates to the technical field of heating pad body structure, and specifically comprises: a substrate component and a heating component that cooperate with each other; the substrate component comprises: a first substrate and a second substrate, and the heating component is arranged between the first substrate and the second substrate; the heating component comprises: a conductive part and a heating layer arranged on the conductive part, and the heating layer has at least two different cross-sectional lengths in a first direction; the substrate provided with the conductive part has a plurality of installation areas arranged in sequence along the first direction; the conductive part supplies power to the heating layer through an external circuit; the conductive part comprises a first electrode and a second electrode, and both electrodes comprise a main electrode segment and at least one branch electrode segment arranged on the corresponding main electrode segment; at least one group of heating electrode pairs is distributed in each installation area; the spacing between at least two groups of heating electrode pairs arranged in different installation areas is unequal, which can effectively and evenly generate heat in each local area of ​​the heating pad body and avoid local overheating.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of heating pad structures, and in particular to a special-shaped heating pad. Background Art

[0002] With the development of social economy and vehicle industry, the comfort requirements of vehicles are gradually increasing. In order to meet the needs of long-distance travel, in addition to air conditioning and seat heating, heating devices in other accessible positions are becoming more and more popular, which can give passengers a better experience when riding and driving.

[0003] Existing heating devices generally use a heating film + parallel electrodes. This type of heating device is limited in shape, etc. Under irregular shapes, the arrangement of electrodes is subject to shape restrictions and cannot be completely arranged into parallel electrodes. At the same time, how to achieve uniform heating under irregular shapes has also become the biggest difficulty in arranging electrodes; for this reason, we provide a special-shaped heating pad body to solve the above problems. Utility Model Content

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a special-shaped heating pad body with uniform heating.

[0005] The present application provides a special-shaped heating pad body, comprising: a substrate component and a heating component that cooperate with each other;

[0006] The substrate assembly comprises: a first substrate and a second substrate; the heating assembly is disposed between the first substrate and the second substrate;

[0007] The heating assembly comprises: a conductive portion and a heating layer disposed on the conductive portion; the heating layer has at least two different cross-sectional lengths in a first direction;

[0008] The conductive part is arranged on the first substrate or the second substrate; the substrate provided with the conductive part has a plurality of installation areas arranged in sequence along the first direction; the heating layers in at least two of the installation areas have correspondingly different areas; the conductive part supplies power to the heating layer through an external circuit;

[0009] The conductive portion comprises a first electrode and a second electrode, each of the first electrode and the second electrode comprises a main electrode segment and at least one branch electrode segment arranged on the corresponding main electrode segment; the branch electrode segments on the two first electrodes and the second electrode are alternately arranged on the corresponding substrate, and each two adjacent branch electrode segments form a set of heating electrode pairs;

[0010] At least one group of the heating electrode pairs is distributed in each of the installation areas; and the spacings between at least two groups of the heating electrode pairs arranged in different installation areas are unequal.

[0011] According to the technical solution provided in the present application, when the first substrate provided with the conductive portion and the second substrate are in a right-angle trapezoidal shape, the branch electrode segments in all the heating electrode pairs are distributed parallel to each other along the first direction;

[0012] Along the direction in which the cross-sectional length of the corresponding substrate in the first direction gradually increases, the length of the branch electrode segments in the heating electrode pair in the installation area along the second direction gradually increases, and the distance between each adjacent two branch electrode segments gradually decreases; the second direction is perpendicular to the first direction.

[0013] According to the technical solution provided in this application, the heating layer has a first distribution state and a second distribution state;

[0014] In the first distribution state, one end of each branch electrode segment away from the corresponding main electrode segment extends to the outside of the edge of the heating layer;

[0015] In the second distribution state, projections of the first electrode and the second electrode on the heating layer along the third direction fall into the heating layer.

[0016] According to the technical solution provided in the present application, when the heating layer is in the first distribution state, the distance between the end of the branch electrode segment and the main electrode segment on the other electrode in the second direction is smaller than the distance between the end of the branch electrode segment and the main electrode segment on the other electrode in the second direction when the heating layer is in the second distribution state.

[0017] According to the technical solution provided in the present application, when the heating layer is in the second distribution state, the distance from the end of the branch electrode segment to the main electrode segment on the other electrode is greater than or equal to the spacing between the heating electrode pairs formed by the branch electrode segments.

[0018] According to the technical solution provided in this application, the heating layer has a first heat-avoiding portion;

[0019] When the heating layer is in the first distribution state, the first heat-shielding portion is an opening structure opened at the edge of the heating layer, and the opening direction is along the second direction;

[0020] The heat-shielding portions are arranged corresponding to the ends of the branch electrode segments away from the corresponding main electrode segments.

[0021] According to the technical solution provided in this application, the heating layer has a second heat-shielding portion;

[0022] When the heating layer is in the second distribution state, the second heat-shielding portion is an opening structure opened on the heating layer;

[0023] The number of the opening structures is at least two, and the distribution of the two opening structures corresponds to the end settings of the branch electrode segments on different main electrode segments.

[0024] According to the technical solution provided by the present application, the external circuit includes: a wire;

[0025] The number of the wires is at least two, one end of the two wires is respectively used to connect to the first electrode and the second electrode, and the other end is connected to a connector, and the connector is used to be electrically connected to a vehicle control system.

[0026] According to the technical solution provided in the present application, the material of the first substrate and the second substrate is a film material or a woven material.

[0027] According to the technical solution provided in this application, the heating layer is made of graphene, carbon black or carbon nanotubes.

[0028] In summary, the technical solution specifically discloses a special-shaped heating pad body, comprising: a substrate assembly and a heating assembly that cooperate with each other; wherein the substrate assembly comprises: a first substrate and a second substrate; the heating assembly is arranged between the first substrate and the second substrate; the heating assembly comprises: a conductive portion and a heating layer arranged on the conductive portion; the heating layer has at least two different cross-sectional lengths in a first direction;

[0029] The conductive part is arranged on the first substrate or the second substrate; the substrate provided with the conductive part has a plurality of installation areas arranged in sequence along the first direction; the heating layers in at least two installation areas have correspondingly different areas; the conductive part supplies power to the heating layer through an external circuit;

[0030] The conductive part includes a first electrode and a second electrode, each of the first electrode and the second electrode includes a main electrode segment and at least one branch electrode segment arranged on the corresponding main electrode segment; the branch electrode segments on the two first electrodes and the second electrode are alternately arranged on the corresponding substrate, and each two adjacent branch electrode segments form a group of heating electrode pairs; at least one group of heating electrode pairs is distributed in each installation area; the spacing between at least two groups of heating electrode pairs arranged in different installation areas is unequal.

[0031] It can be seen that the substrate on which the conductive part is arranged in the heating pad body provided in the present application has multiple installation areas; each two adjacent installation areas correspond to different areas to adapt to the special-shaped heating layer. In the case of different areas, in order to ensure that the heating pad body does not have local overheating, the total value of the resistance in the different installation areas is matched with its area. Since the first electrode and the second electrode in the conductive part both include a main electrode segment and a branch electrode segment, the spacing between the heating electrode pairs in each installation area can be reasonably allocated to effectively and evenly generate local heat in the heating pad body, thereby avoiding local overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0033] Figure 1 It is a schematic diagram of the explosion structure of a special-shaped heating pad.

[0034] Figure 2 This is a schematic diagram of a first electrode arrangement structure of a special-shaped heating pad.

[0035] Figure 3 This is a schematic diagram of the first electrode arrangement structure of a special-shaped heating pad body (including the heat-shielding portion).

[0036] Figure 4 This is a schematic diagram of the second electrode arrangement structure of a special-shaped heating pad.

[0037] Figure 5 This is a schematic diagram of the second electrode arrangement structure of a special-shaped heating pad body (including the heat-shielding portion).

[0038] Numbers in the figure: 1. first substrate; 2. second substrate; 3. conductive part; 31. first electrode; 32. second electrode; 33. main electrode segment; 34. branch electrode segment; 35. installation area; 4. heating layer; 41. first heat-shielding part; 42. second heat-shielding part; 5. wire; 6. wire harness protective cover; 7. connector. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Example 1

[0042] Please refer to Figure 1 and Figure 2 The exploded structural diagram of a special-shaped heating pad body provided by the present embodiment and the first electrode arrangement structural diagram are shown, wherein the heating pad body comprises: a substrate component and a heating component that cooperate with each other;

[0043] The substrate assembly comprises: a first substrate 1 and a second substrate 2; the heating assembly is disposed between the first substrate 1 and the second substrate 2;

[0044] The heating assembly comprises: a conductive portion 3 and a heating layer 4 disposed on the conductive portion 3;

[0045] The heating layer 4 has at least two different cross-sectional lengths in the first direction;

[0046] The conductive part 3 is arranged on the first substrate 1 or the second substrate 2; the substrate provided with the conductive part 3 has a plurality of installation areas 35 arranged in sequence along the first direction; the heating layers 4 in at least two of the installation areas 35 have different areas; the conductive part 3 supplies power to the heating layer 4 through an external circuit;

[0047] The conductive part 3 includes a first electrode 31 and a second electrode 32. The first electrode 31 and the second electrode 32 each include a main electrode segment 33 and at least one branch electrode segment 34 arranged on the corresponding main electrode segment 33. The branch electrode segments 34 on the two first electrodes 31 and the second electrode 32 are alternately arranged on the corresponding substrate, and each two adjacent branch electrode segments 34 form a set of heating electrode pairs.

[0048] At least one group of heating electrode pairs is distributed in each installation area 35 ; and the spacings between at least two groups of heating electrode pairs arranged in different installation areas 35 are unequal.

[0049] In this embodiment, a space for installing the heating component is formed between the first substrate 1 and the second substrate 2; generally, the first substrate 1 and the second substrate 2 have the same shape. Since the substrate is used to cover the heating layer 4 later, the shapes of the substrate and the heating layer 4 are also relatively uniform, but the substrate is larger in size. The material of the substrate can be a film material (PET or PI) or a woven material (woven cloth, plain cloth, waterproof cloth, etc.);

[0050] It should be noted that there is no substantial difference between the first substrate 1 and the second substrate 2 in essence. It is just for the convenience of description that the two substrates are defined as the first and the second.

[0051] The heating component includes a conductive part 3 and a heating layer 4, wherein the conductive part 3 is used to control the heating layer 4 to generate heat; the conductive part 3 includes a first electrode 31 and a second electrode 32. Since the heating component is arranged between the first substrate 1 and the second substrate 2, the first electrode 31 and the second electrode 32 will be selectively arranged on the first substrate 1 or the second substrate 2, and the specific arrangement can be adjusted according to actual conditions.

[0052] The substrate provided with the first electrode 31 and the second electrode 32 has a plurality of mounting areas 35 arranged in sequence along a first direction. Here, the first direction is the length direction of the substrate. Figure 1 The direction of the arrow X in the middle; the electrode can be a benign conductive material such as printed conductive paste or copper plate. Each adjacent two mounting areas 35 have different areas. There is no fixed standard for the division of the mounting areas 35, which is mainly based on the shape of the substrate or the heating layer 4. For details, see Figure 2 Division of the installation area 35 in.

[0053] Furthermore, each of the first electrode 31 and the second electrode 32 includes a main electrode segment 33 and at least one branch electrode segment 34 (for specific forms, see Figure 2 As shown); when the first electrode 31 and the second electrode 32 are arranged, the main electrode segment 33 will be arranged along the edge of the substrate, and the branch electrode segments 34 on the first electrode 31 and the second electrode 32 will be alternately arranged on the corresponding substrate to cover the surface of the substrate. For the convenience of subsequent introduction, each adjacent two branch electrode segments 34 are defined as a group of heating electrode pairs.

[0054] Since the heating layer 4 has at least two different cross-sectional lengths in the first direction, rather than a regular shape (such as a rectangle), it is particularly important whether the heating pad body can generate heat evenly. In order to ensure that the heating pad body can be heated evenly, it is ensured that at least one group of the heating electrode pairs is distributed in each of the installation areas 35. Due to the different shapes of the substrate, each installation area 35 has a different area. In order to ensure uniform heating of the heating pad body, it is also necessary to ensure that the heating value of each installation area 35 is as close as possible. For relatively large and small installation areas 35, the larger installation area 35 needs to have a smaller total resistance value, while the smaller installation area 35 needs to have a larger total resistance value to balance the heat generation per unit area. Therefore, in the special-shaped heating pad, the spacing between at least two groups of the heating electrode pairs arranged in different installation areas 35 is not equal, and needs to be adjusted according to actual conditions.

[0055] It should be noted that the total resistance value is determined by the number of the heating electrode pairs in each installation area 35, the spacing between two adjacent heating electrode pairs, and the size and spacing of the branch electrode segments 34 in each heating electrode pair, so it needs to be reasonably arranged according to actual conditions.

[0056] In a preferred embodiment, see Figure 2 As shown, when the first substrate 1 provided with the conductive portion 3 and the second substrate 2 are in a right-angle trapezoidal shape, the branch electrode segments 34 in all the heating electrode pairs are distributed parallel to each other along the first direction;

[0057] Along the direction in which the cross-sectional length of the corresponding substrate in the first direction gradually increases, the length of the branch electrode segments 34 in the heating electrode pair in the installation area 35 along the second direction gradually increases, and the distance between each two adjacent branch electrode segments 34 gradually decreases; the second direction is perpendicular to the first direction, see Figure 1 The direction of the arrow Y in the middle.

[0058] like Figure 2 As shown, this is because the right-angled trapezoidal shape is a relatively smooth shape from wide to narrow (or from narrow to wide), so when the substrate shape is a right-angled trapezoid, the length of the branch electrode segment 34 will gradually increase along the direction in which the cross-sectional length of the corresponding substrate in the first direction gradually increases. At the same time, the spacing R between each two adjacent branch electrode segments 34 gradually decreases. The gradual decrease in spacing R also means that the total resistance value is gradually decreasing, thereby evenly distributing the heat at the narrower end and the wider end of the substrate.

[0059] See also Figure 2 and Figure 4 As shown, the heating layer 4 has a first distribution state and a second distribution state;

[0060] In the first distribution state, the ends of the branch electrode segments 34 away from the corresponding main electrode segments 33 extend to the outside of the edge of the heating layer 4. Figure 2 As shown;

[0061] The heating layer 4 can be made of heating materials such as graphene, carbon black, carbon nanotubes or other conductive inks. Generally, the outer contour edge of the heating layer 4 is located inside the branch electrode segment 34, which can effectively prevent local short circuit overheating.

[0062] In the second distribution state, the projections of the first electrode 31 and the second electrode 32 on the substrate on one side of the heating layer 4 along the third direction fall into the heating layer 4. Figure 4 As shown, here, the third direction is the direction pointing to the substrate.

[0063] When the heating layer 4 is in the second distribution state, it is equivalent to that the outer contour edge of the heating layer 4 is outside the branch electrode segment 34. In order to prevent local overheating and short circuit, the distance between the branch electrode segment 34 and the main electrode segment 33 on the other electrode in the second direction needs to be set farther.

[0064] Therefore, in a preferred embodiment, when the heating layer 4 is in the first distribution state, the distance between the end of the branch electrode segment 34 and the main electrode segment 33 on the other electrode in the second direction is smaller than the distance between the end of the branch electrode segment 34 and the main electrode segment 33 on the other electrode in the second direction when the heating layer 4 is in the second distribution state.

[0065] Combination Figure 3 and Figure 4 Come and see, Figure 3 The heating layer 4 is in the first distribution state, and M represents the distance between the end of each branch electrode segment 34 and the main electrode segment 33 of another electrode in this state; Figure 4 This is the case where the heating layer 4 is in the second distribution state, and L represents the distance between the end of each branch electrode segment 34 and the main electrode segment 33 of the other electrode in this state; comparing the two figures, it can be seen that when the heating layer 4 is in different distribution states, the spacing L shown at the same position is obviously larger than the spacing M.

[0066] In a preferred embodiment, when the heating layer 4 is in the second distribution state, the distance from the end of the branch electrode segment 34 to the main electrode segment 33 on the other electrode is greater than or equal to the spacing between the heating electrode pairs formed by the branch electrode segments 34 .

[0067] Because when the heating layer 4 is in the second distribution state, compared to the first distribution state, the ends of each branch electrode segment 34 are directly connected to the main electrode segment 33 on the other electrode through the heating layer 4, the resistance is smaller, and local overheating is more likely to occur. Therefore, in this distribution state, the distance from the end of the branch electrode segment 34 to the main electrode segment 33 on the other electrode needs to be farther.

[0068] In a preferred embodiment, if Figure 3 As shown, in order to further prevent the phenomenon of overheating and short circuit inside the heating pad body, the heating layer 4 has a first heat-shielding portion 41;

[0069] When the heating layer 4 is in the first distribution state, the first heat-shielding portion 41 is an opening structure opened on the heating layer 4, and the opening is along the second direction;

[0070] The first heat-shielding portion 41 is arranged to correspond to an end of each branch electrode segment 34 away from the corresponding main electrode segment 33 .

[0071] In a preferred embodiment, if Figure 5 As shown, the heating layer 4 has a second heat-shielding portion 42;

[0072] When the heating layer 4 is in the second distribution state, the second heat-shielding portion 42 is an opening structure opened on the heating layer 4;

[0073] The number of the opening structures is at least two, and the distribution of the two opening structures corresponds to the end settings of the branch electrode segments 34 on different main electrode segments 33 .

[0074] It should be noted that the branch electrode segment 34 for which the second heat-shielding portion 42 and the first heat-shielding portion 41 are disposed is a branch electrode segment 34 that points to another main electrode segment 33, for example, see Figure 3 or Figure 5 The branch electrode segment 34 located at the top of the substrate (the end away from the connector 7 ) is not provided with the first heat-shielding portion 41 or the second heat-shielding portion 42 .

[0075] In a preferred embodiment, if Figure 2 As shown, the external circuit includes: a wire 5 and a wire harness protective cover 6 arranged outside the wire 5;

[0076] There are at least two wires 5 , one end of each of the two wires 5 is used to connect to the first electrode 31 and the second electrode 32 , respectively, and the other end thereof is connected to a connector 7 , and the connector 7 is used to be electrically connected to a vehicle control system.

[0077] Specifically, the first electrode 31, the second electrode 32, the heating layer 4 and the wire 5 constitute a basic heating circuit. When the vehicle body power supply starts to supply power to the heating circuit through the connector 7, the heating circuit is turned on, and current flows through the heating layer 4, which causes the heating layer 4 to generate heat.

[0078] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A special-shaped heating pad body, characterized in that: include: A substrate component and a heating component that cooperate with each other; The substrate assembly comprises: a first substrate (1) and a second substrate (2); the heating assembly is arranged between the first substrate (1) and the second substrate (2); The heating component comprises: a conductive part (3) and a heating layer (4) arranged on the conductive part (3); The heating layer (4) has at least two different cross-sectional lengths in a first direction; The conductive part (3) is arranged on the first substrate (1) or the second substrate (2); the substrate provided with the conductive part (3) has a plurality of installation areas (35) arranged in sequence along the first direction; the heating layers (4) in at least two of the installation areas (35) have correspondingly different areas; the conductive part (3) supplies power to the heating layer (4) through an external circuit; The conductive portion (3) comprises a first electrode (31) and a second electrode (32), wherein the first electrode (31) and the second electrode (32) each comprise a main electrode segment (33) and at least one branch electrode segment (34) arranged on the corresponding main electrode segment (33); the branch electrode segments (34) on the two first electrodes (31) and the second electrode (32) are alternately arranged on the corresponding substrate, and each two adjacent branch electrode segments (34) form a group of heating electrode pairs; At least one group of heating electrode pairs is distributed in each installation area (35); and the spacing between at least two groups of heating electrode pairs arranged in different installation areas (35) is unequal.

2. The special-shaped heating pad body according to claim 1, characterized in that: When the first substrate (1) provided with the conductive portion (3) and the second substrate (2) are in a right-angle trapezoidal shape, the branch electrode segments (34) in all the heating electrode pairs are distributed parallel to each other along the first direction; Along the direction in which the cross-sectional length of the corresponding substrate in the first direction gradually increases, the length of the branch electrode segments (34) in the heating electrode pair in the installation area (35) along the second direction gradually increases, and the distance between each two adjacent branch electrode segments (34) gradually decreases; the second direction is perpendicular to the first direction.

3. The special-shaped heating pad body according to claim 2, characterized in that: The heating layer (4) has a first distribution state and a second distribution state; In the first distribution state, one end of the branch electrode segment (34) away from the corresponding main electrode segment (33) extends to the outside of the edge of the heating layer (4); In the second distribution state, the projections of the first electrode (31) and the second electrode (32) on the heating layer (4) along the third direction fall into the heating layer (4).

4. The special-shaped heating pad body according to claim 3, characterized in that: When the heating layer (4) is in the first distribution state, the distance between the end of the branch electrode segment (34) and the main electrode segment (33) on the other electrode in the second direction is smaller than the distance between the end of the branch electrode segment (34) and the main electrode segment (33) on the other electrode in the second direction when the heating layer (4) is in the second distribution state.

5. The special-shaped heating pad body according to claim 3, characterized in that: When the heating layer (4) is in a second distribution state, the distance from the end of the branch electrode segment (34) to the main electrode segment (33) on the other electrode is greater than or equal to the spacing between the heating electrode pairs formed by the branch electrode segment (34).

6. The special-shaped heating pad body according to claim 4, characterized in that: The heating layer (4) has a first heat-shielding portion (41); When the heating layer (4) is in the first distribution state, the first heat-shielding portion (41) is an open structure opened at the edge of the heating layer (4), and the opening direction is along the second direction; The heat-avoiding portion (41) is arranged in a distribution corresponding to an end of each branch electrode segment (34) away from the corresponding main electrode segment (33).

7. The special-shaped heating pad body according to claim 5, characterized in that: The heating layer (4) has a second heat-shielding portion (42); When the heating layer (4) is in the second distribution state, the second heat-shielding portion (42) is an open structure opened on the heating layer (4); The number of the opening structures is at least two, and the distribution of the two opening structures corresponds to the end settings of the branch electrode segments (34) on different main electrode segments (33).

8. The special-shaped heating pad body according to claim 1, characterized in that: The external circuit comprises: a wire (5); The number of the wires (5) is at least two, one end of the two wires (5) is used to connect to the first electrode (31) and the second electrode (32) respectively, and the other end is connected to a connector (7), and the connector (7) is used to be electrically connected to a vehicle control system.

9. The special-shaped heating pad body according to claim 1, characterized in that: The first substrate (1) and the second substrate (2) are made of film-like materials or woven fabric-like materials.

10. The special-shaped heating pad body according to claim 1, characterized in that: The heating layer (4) is made of graphene, carbon black or carbon nanotubes.

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