阅读说明：本技术 基于双加热丝的加热片结构 (Heating plate structure based on double heating wires ) 是由 朱新波 彭建涛 于淼 杜洋 徐亮 李金岳 刘镒 段晓闻 陆希 于 2021-09-10 设计创作，主要内容包括：本发明提供了一种基于双加热丝的加热片结构,包括：加热片基片、双加热丝、供电装置、第一加热丝以及第二加热丝；所述加热片基片内安装所述双加热丝,所述双加热丝连接所述供电装置；所述双加热丝包括：所述第一加热丝和所述第二加热丝；所述第一加热丝和所述第二加热丝位置关系包括：嵌套、并列或双层。本发明极大提高了加热片的可靠性,可降低单加热丝和单供电线因损伤、断裂、虚焊等因素导致的加热片不能正常工作的风险。(The invention provides a heating plate structure based on double heating wires, which comprises: the heating device comprises a heating sheet substrate, double heating wires, a power supply device, a first heating wire and a second heating wire; the double heating wires are arranged in the heating sheet substrate and connected with the power supply device; the double heating wire comprises: the first heating wire and the second heating wire; the first heater wire and the second heater wire positional relationship include: nested, side-by-side, or bilayer. The invention greatly improves the reliability of the heating sheet and can reduce the risk that the heating sheet cannot normally work due to factors such as damage, fracture, insufficient soldering and the like of the single heating wire and the single power supply wire.)

1. The utility model provides a heating plate structure based on two heater strips which characterized in that includes: the heating device comprises a heating sheet substrate (1), double heating wires and a power supply device;

the heating plate substrate (1) is internally provided with the double heating wires, and the double heating wires are connected with the power supply device.

2. The dual heating wire-based heater chip structure of claim 1, wherein the dual heating wire comprises: the first heating wire (2) and the second heating wire (3);

the first heater wire (2) and the second heater wire (3) are in a positional relationship comprising: nested, side-by-side, or bilayer.

3. The heating sheet structure based on the double heating wires as claimed in claim 2, wherein: for the nested position relation, the second heating wire (3) is nested in the first heating wire (2), and the first heating wire (2) extends in the heating sheet substrate (1) and forms a first loop;

the second heating wire (3) extends in the first loop along the extension direction of the first loop and forms a second loop, and the second loop is nested in the first loop.

4. The heating sheet structure based on the double heating wires as claimed in claim 3, wherein: for the parallel position relation, the first heating wire (2) and the second heating wire (3) are arranged in parallel, and the first heating wire (2) extends at one side in the heating plate substrate (1) and forms a third loop;

the second heating wire (3) extends from the other side in the heating sheet substrate (1) and forms a fourth loop, and the third loop and the fourth loop are parallel.

5. The heating sheet structure based on the double heating wires according to claim 4, wherein: for the double-layer position relation, the first heating wire (2) and the second heating wire (3) are arranged in a double layer mode, and the first heating wire (2) extends in the heating plate substrate (1) and forms a fifth loop;

the second heating wire (3) extends in the heating plate substrate (1) and forms a sixth loop, and the fifth loop and the sixth loop are partially overlapped.

6. The heater sheet structure based on dual heating wires according to claim 1, wherein the power supply means comprises: the power supply system is of a main/standby double-line structure, an independent double-line structure or a single-line power supply structure;

the main and standby double-wire structures, the independent double-wire structure or the single-wire power supply structure are connected with two ends of the double heating wires.

7. The heating sheet structure based on the double heating wires as claimed in claim 6, wherein: the power supply device adopts the main-standby double-line structure, two ends of the first heating wire (2) and the second heating wire (3) are respectively connected with a power supply line (5), and a plurality of power supply lines (5) are arranged;

connect first heater strip (2) power supply line (5) with connect second heater strip (3) through electric wire welded connection and set up welding point (4) between power supply line (5).

8. The heating sheet structure based on the double heating wires as claimed in claim 6, wherein: for power supply unit adopts independent double-line structure, first heater strip (2) with second heater strip (3) both ends are connected respectively power supply line (5), power supply line (5) are provided with many.

9. The heating sheet structure based on the double heating wires as claimed in claim 6, wherein: for the power supply device, a single-wire power supply structure is adopted, one end of the first heating wire (2) is connected with one end of the second heating wire (3) in a welding mode and provided with the welding point (4), and the other end of the first heating wire (2) is connected with the other end of the second heating wire (3) in a welding mode and provided with the welding point (4);

welding connection is located to welding point (4) power supply line (5), welding point (4) with power supply line (5) are provided with a plurality ofly.

Technical Field

The invention relates to the technical field of heating plates, in particular to a heating plate structure based on double heating wires; in particular to a heating plate structure facing the spaceflight and based on double heating wires.

Background

The aerospace product works in a vacuum high-low temperature and space radiation environment, and needs to undergo an active section launching link with high mechanical impact, and has the characteristics of high cost, extremely small sample size and high technical risk. The heating plate is widely applied to aerospace products to achieve functions of autonomous temperature control, program control/remote control unlocking and the like of the aerospace products. The failure of the heating plate can cause the performance reduction of the aerospace product or the failure of part of important functions, and the loss is extremely large. In order to reduce the heating plate failure risk caused by the problems of material bending and damage caused by heating wire fracture, connecting point cold welding and high mechanical impact, material denaturation caused by high radiation environment and the like, the heating plate is subjected to necessary protection measures, meanwhile, the reliability design such as redundancy and backup is required, and the reliability of the heating plate is improved.

The existing heating piece reliability design method mainly comprises the following steps: the double-power-supply-line redundancy design is adopted, namely, the risk of a power supply link of the heating plate is reduced by adopting a double-line power supply mode, so that the reliability of the heating plate is improved, but the method cannot effectively deal with the risk of the fault of a heating wire in the heating plate; the main backup heating plate adopts a double heating plate mode to reduce the risk of losing the whole heating function caused by single-plate failure, thereby improving the reliability of the heating function, but the method needs double heating plates and does not improve the reliability of the heating plate (single heating plate).

Specifically to this patent, need solve the risk of heating plate because of single heater strip trouble and whole trouble.

Patent document CN101437329B discloses an electric heating sheet comprising: two insulating film substrates having opposing surfaces; at least one sheet-like heat generating sheet sandwiched between the opposing surfaces of the pair of film substrates; and the power connection flat cable is used for electrically connecting the heating sheet with an external power supply. And a far infrared coating is coated on the surface of at least one film base layer, which is far away from the heating sheet.

Patent document CN106793196B relates to a device required for heating components, and discloses a high-absorptivity film type electric heating sheet, which comprises a high-absorptivity/emissivity insulating layer, a conductive heating loop, an adhesive layer, and lead-out wires; the adhesive layer is attached to the surface of an object to be heated in a vacuum environment, and the conductive heating loop is led out by a lead-out wire and attached between the high absorption/emissivity insulating layer and the adhesive layer. The high absorption/emissivity insulating layer adopts a high absorption/emissivity polyimide insulating layer, the conductive heating loop adopts a constantan electric heating layer, and the adhesive layer adopts a polyimide insulating layer.

Patent document CN108634435A discloses a heating sheet device, which includes a heating sheet, a control device and a rechargeable power supply device, wherein the heating sheet is electrically connected to the control device through a first connecting wire, the power supply device is disposed inside the control device and electrically connected to the control device, and the power supply device is externally electrically connected to a USB power input connector through a second connecting wire; the heating sheet is provided with a temperature sensor electrically connected with the heating sheet; the heating plate, the control device, the power supply device, the temperature sensor and the connecting wires are all designed into a waterproof structure.

Patent document CN201204707Y discloses an electric heating sheet comprising: a pair of insulating film substrates having adjacent surfaces; at least one heating sheet sandwiched between the adjacent surfaces of the pair of film substrates; and the power connection flat cable is used for electrically connecting the heating sheet with an external power supply. The electric heating sheet also comprises at least one insulated sewing thread for sewing the film base layer, the heating sheet and the electric connecting flat cable together.

The above-mentioned existing risk that fails to solve the heating plate because of single heater strip trouble and whole trouble.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a heating plate structure based on double heating wires.

According to the invention, the heating plate structure based on the double heating wires comprises: the heating plate comprises a heating plate substrate, double heating wires and a power supply device;

the heating sheet substrate is internally provided with the double heating wires, and the double heating wires are connected with the power supply device.

Preferably, the dual heating wire comprises: the first heating wire and the second heating wire;

the first heater wire and the second heater wire positional relationship include: nested, side-by-side, or bilayer.

Preferably, for the nested position relationship, the second heating wire is nested in the first heating wire, and the first heating wire extends in the heating sheet substrate and forms a first loop;

the second heating wires extend in the first loop along the extension direction of the first loop and form a second loop, and the second loop is nested in the first loop.

Preferably, for the parallel position relation, the first heating wire and the second heating wire are arranged in parallel, and the first heating wire extends at one side in the heating sheet substrate and forms a third loop;

the second heating wire extends from the other side in the heating sheet substrate and forms a fourth loop, and the third loop and the fourth loop are parallel.

Preferably, for a double-layer position relationship, the first heating wire and the second heating wire are arranged in double layers, and the first heating wire extends in the heating sheet substrate and forms a fifth loop;

the second heating wire extends in the heating sheet substrate and forms a sixth loop, and the fifth loop and the sixth loop are partially overlapped.

Preferably, the power supply device includes: the power supply system is of a main/standby double-line structure, an independent double-line structure or a single-line power supply structure;

the main and standby double-wire structures, the independent double-wire structure or the single-wire power supply structure are connected with two ends of the double heating wires.

Preferably, the power supply device adopts the main-standby double-wire structure, two ends of the first heating wire and the second heating wire are respectively connected with a power supply line, and a plurality of power supply lines are arranged;

connect first heater strip the power supply line with connect the second heater strip pass through wire welded connection and set up the welding point between the power supply line.

Preferably, for the power supply device adopts the independent double-line structure, the power supply line is connected respectively at two ends of the first heating wire and the second heating wire, and the power supply line is provided with a plurality of wires.

Preferably, the power supply device adopts the single-wire power supply structure, one end of the first heating wire is connected with one end of the second heating wire in a welding manner and provided with the welding point, and the other end of the first heating wire is connected with the other end of the second heating wire in a welding manner and provided with the welding point;

the welding point department welded connection the power supply line, the welding point with the power supply line is provided with a plurality ofly.

Preferably, the single-wire power supply structure is a lowest power supply configuration scheme.

Compared with the prior art, the invention has the following beneficial effects:

the invention greatly improves the reliability of the heating sheet and can reduce the risk that the heating sheet cannot normally work due to factors such as damage, fracture, insufficient soldering and the like of the single heating wire and the single power supply wire.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a flow chart of the design work of a heating plate with double heating wires;

FIG. 2 is a schematic diagram of a nested arrangement structure of double heating wires;

FIG. 3 is a schematic diagram of a parallel arrangement structure of double heating wires;

FIG. 4 is a schematic diagram of a double-layer arrangement structure of double heating wires;

FIG. 5 is a schematic structural diagram of a main-standby dual-line power supply apparatus;

FIG. 6 is a schematic diagram of a stand-alone two-wire power supply;

FIG. 7 is a schematic diagram of a single-line power supply device;

FIG. 8 is a schematic structural diagram of dual heater strips nested and arranged to form a main and standby dual line structure;

FIG. 9 is a schematic diagram of an independent double-wire structure with double heating wires in a nested arrangement;

FIG. 10 is a schematic diagram of a single-wire power supply structure with double heating wires in a nested arrangement;

shown in the figure:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

As shown in fig. 1, the design method of the heating plate structure based on the double heating wires comprises the following steps: step S1, designing the arrangement mode of the double heating wires in the heating sheet to realize the redundant design of the double heating wires, wherein the arrangement mode comprises the following steps: nested, side-by-side, or bilayer; step S2, designing a power supply scheme of the double heating wires, wherein the power supply scheme comprises the following steps: the two-wire structure is a main and standby double-wire structure, an independent double-wire structure or a single-wire power supply structure. The design can be used for aerospace products such as satellites, space stations, aircrafts and the like, and can also be used for various products needing heating sheets.

As shown in fig. 2 to 4, the heating sheet structure based on the dual heating wires includes: the heating device comprises a heating sheet substrate 1, double heating wires, a power supply device, a first heating wire 2 and a second heating wire 3; two heater strips of installation in the heating plate substrate 1, two heater strips are connected power supply unit, and two heater strips include: a first heating wire 2 and a second heating wire 3; the first heater wire 2 and the second heater wire 3 are in a positional relationship including: nested, side-by-side, or bilayer. When the second heating wire 3 is nested in the first heating wire 2, the first heating wire 2 extends in the heating sheet substrate 1 and forms a first loop, the second heating wire 3 extends in the first loop along the extending direction of the first loop and forms a second loop, and the second loop is nested in the first loop. When the first heating wire 2 and the second heating wire 3 are arranged in parallel, the first heating wire 2 extends on one side in the heating plate substrate 1 and forms a third loop, the second heating wire 3 extends on the other side in the heating plate substrate 1 and forms a fourth loop, and the third loop and the fourth loop are arranged in parallel. When the first heating wire 2 and the second heating wire 3 are arranged in two layers, the first heating wire 2 extends in the heating plate substrate 1 and forms a fifth loop, the second heating wire 3 extends in the heating plate substrate 1 and forms a sixth loop, and the fifth loop and the sixth loop are partially overlapped.

As shown in fig. 5 to 10, the power supply device includes: a welding point 4 and a power supply line 5; when power supply unit adopted each other for activestandby double-line structure, power supply line 5 was connected respectively at first heater strip 2 and 3 both ends of second heater strip, and power supply line 5 is provided with many, connects between power supply line 5 of first heater strip 2 and the power supply line 5 of connecting second heater strip 3 through electric wire welded connection and set up welding point 4. When the power supply device adopts an independent double-line structure, the two ends of the first heating wire 2 and the second heating wire 3 are respectively connected with the power supply line 5, and the power supply line 5 is provided with a plurality of wires. When power supply unit adopted the single line power supply structure, 2 one end welded connection second heater strip 3 one end of first heater strip set up welding point 4, 2 other ends welded connection second heater strip 3 other ends of first heater strip set up welding point 4, and welding point 4 department welded connection power supply line 5.

Example 2

As shown in fig. 1, the method for designing a heating sheet includes the following steps:

step 1: the design is a double-heating-wire redundant design, and double heating wires are designed in a heating-sheet substrate 1 in a nesting, parallel or double-layer arrangement mode and the like; step 2: the double-heating wire power supply scheme is configured, a main and standby double-wire structure, an independent double-wire structure or a single-wire power supply structure are adopted to supply power for the double-heating wires, and the lowest power supply configuration of the double-heating wires is a single-wire power supply structure.

As shown in fig. 2 to 4, fig. 2 is a nested arrangement, fig. 3 is a side-by-side arrangement, and fig. 4 is a double-layer arrangement. The first heating wire 2 and the second heating wire 3 are positioned on the same heating plate substrate 1.

As shown in fig. 5 to 7, fig. 5 is a main/standby double-line structure, fig. 6 is an independent double-line structure, and fig. 7 is a single-line power supply structure. The main-standby double-line structure comprises: a power supply line 5 and a welding point 4; the independent double-line structure implementation comprises the following steps: a power supply line 5; the single-wire power supply structure implementation comprises: supply line 5 and solder joint 4.

As shown in fig. 8, a heating sheet with dual heating wires in a nested arrangement-a main-standby dual wire structure is taken as an example. The first heating wire 2 and the second heating wire 3 are respectively connected with a power supply line 5 for isobaric power supply, namely, the double heating wires are switched on and off simultaneously. Because the double heating wires and the power supply wires 5 are both in a redundant design, when a certain heating wire (such as the first heating wire 2) or a certain power supply wire 5 in the heating sheet fails independently or simultaneously, the heating sheet can still realize a heating function, namely the heating sheet with the double heating wires, which are mutually in a main-standby double-wire structure, has high reliability.

As shown in fig. 9, the heating sheet with double heating wires nested-independent double wire structure is taken as an example. The first heating wire 2 is supplied by one supply wire 5 and the second heating wire 3 is supplied by the other supply wire 5, i.e. the two heating wires are independent of each other. Due to the adoption of the redundancy design, when a certain heating wire (such as the first heating wire 2) or a certain power supply wire 5 in the heating sheet fails independently, the heating sheet can still realize the heating function, namely the heating sheet with the double-heating wire-independent double-wire structure has high reliability.

As shown in fig. 10, a heating sheet of a double heating wire-single wire power supply structure is taken as an example. The first heating wire 2 and the second heating wire 3 are jointly supplied with power by a power supply line 5. Due to the adoption of the redundant design of the double heating wires, when a certain heating wire (such as the first heating wire 2) in the heating sheet fails independently, the heating sheet can still realize the heating function, namely the heating sheet with the double heating wire-single wire power supply structure has high reliability.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.