Novel heating device for automobile seat, control method and automobile seat
By dividing the seat heating pad into a main heating area and a sensor sensing area, and using heating wires with different resistances, the heating temperature can be precisely controlled, solving the problem of low-level failure caused by rapid sensor heat dissipation and reducing costs.
Patent Information
- Application Number
- CN202511423655.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-02-03
AI Technical Summary
In traditional seat heating pad systems, the temperature sensor area dissipates heat quickly, causing the low-level heating mode to malfunction, and the denser arrangement of heating wires increases the cost of raw materials and labor.
The heating surface of the heating pad body is divided into a main heating area and a sensor sensing area. A first heating wire and a second heating wire with different resistance per unit length are used. The ambient temperature information around the second heating wire is collected by the temperature sensing component to accurately control the heating temperature of the main heating area.
It achieves accurate control of the low-level heating mode, reduces production costs, and avoids the increase in material and labor costs caused by the densification of heating lines.
Smart Images
Figure CN121448243A_ABST
Abstract
Description
Technical Field
[0001] This application generally relates to the field of automotive seat technology, and specifically to a novel automotive seat heating device, control method, and automotive seat. Background Technology
[0002] In a seat heating pad system, a temperature sensor, as the core temperature-sensing element, can monitor temperature changes in the heating area in real time. When the user sets the heating level, the control system uses the temperature sensor to determine whether the current temperature has reached a threshold, and then systematically adjusts the heating pad's heating temperature. For example, when the temperature sensor detects that the temperature has reached the threshold, it stops to maintain a balanced heating effect and avoid overheating.
[0003] In traditional solutions, the temperature sensor inside the seat heating pad system is usually located in a place that is not in contact with the human body, such as the connection area between the seat cushion and the backrest. Without the human body to block it, the heat around the temperature sensor can easily dissipate quickly. Therefore, during calibration, the temperature detected by the temperature sensor will be lower than the corresponding heating pad heating temperature. This causes the temperature sensor's detection temperature threshold to be below room temperature in the low-level heating mode, making the control of the low-level heating mode fail.
[0004] Therefore, to address the issue of rapid heat dissipation around the temperature sensor, current heating pad structures often employ a denser arrangement of heating wires. This directly leads to an increase in the amount of wire used, thereby increasing raw material costs, as well as labor and time costs during the production process. Summary of the Invention
[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a novel heating device, control method and car seat for automobile seats.
[0006] In a first aspect, this application provides a novel heating device for a car seat, the heating device being disposed on the car seat for providing heat to a person sitting on the car seat, the heating device comprising: A heating pad body, the heating pad body comprising: a substrate, and a heating component and a temperature sensing component disposed on the substrate; The heating assembly includes at least: a first heating wire and a second heating wire electrically connected, wherein the resistance per unit length of the first heating wire and the resistance per unit length of the second heating wire are different. The heating surface of the heating pad body includes at least one main heating area and one sensor sensing area, and the temperature sensing component is disposed in the sensor sensing area; wherein, the main heating area is the heating area of the heating surface used for contact with the human body, and the sensor sensing area is the remaining area of the heating surface that cooperates with the main heating area. The temperature sensing component is disposed within the sensor sensing area and is electrically connected to a control component. The control component is used to obtain the ambient temperature information around the second heating wire in the sensor sensing area through the temperature sensing component, and to control and adjust the heating temperature provided to the human body by the heating component located in the main heating area according to the ambient temperature information.
[0007] According to the technical solution provided in this application, the first heating wire and the second heating wire are connected in series; one end of at least two second heating wires extends through the sensor sensing area to the main heating area and is respectively connected to both ends of the first heating wire, and the other end of the two second heating wires is respectively electrically connected to an external circuit; the resistance per unit length of the second heating wire is greater than the resistance per unit length of the first heating wire. The heating temperature includes a first temperature and a second temperature; the first temperature is the heating temperature of the first heating wire in the main heating zone; and the second temperature is the heating temperature of the second heating wire extending into the main heating zone.
[0008] According to the technical solution provided in this application, one end of the second heating wire is connected to one end of the first heating wire, and one end of the first heating wire and the other end of the second heating wire are respectively electrically connected to an external circuit. The heating temperature includes: a first temperature; the first temperature is the heating temperature of the first heating wire in the main heating zone; the second heating wire is located in the sensor sensing zone; the second heating wire is used to connect the first heating wire to the external circuit and to cooperate with the temperature sensing component and the first heating wire to obtain the first temperature.
[0009] According to the technical solution provided in this application, the first heating wire and the second heating wire are connected in parallel, and the two ends of the first heating wire and the second heating wire are electrically connected to an external circuit respectively; the resistance per unit length of the second heating wire is less than the resistance per unit length of the first heating wire.
[0010] According to the technical solution provided in this application, the heating component further includes: a conductive lead-out portion, which is a circuit board structure. The temperature sensing component is integrated inside the circuit board structure, and the first heating wire and the second heating wire are connected to the external circuit through the conductive lead-out portion.
[0011] According to the technical solution provided in this application, a first protective structure is provided at the connection points of the first heating wire, the second heating wire, and the lead-out conductive part, and the first protective structure is provided at each of the connection points.
[0012] According to the technical solution provided in this application, the heating device further includes: a second protective structure, which is disposed on the first protective structure.
[0013] Secondly, this application provides a control method for a novel automotive seat heating device, which utilizes the aforementioned novel automotive seat heating device. The method includes the following steps: In response to the start signal of the heating device; Real-time monitoring of ambient temperature information collected by the temperature sensor assembly; When the ambient temperature information is determined to reach a preset temperature threshold, the heating device is controlled to adjust the heating temperature.
[0014] According to the technical solution provided in this application, the preset temperature threshold is confirmed by the heating level selected by the user, the ambient temperature information is used to reflect the heating temperature of the heating device, and the preset temperature threshold and the heating temperature are obtained through calibration experiments.
[0015] Thirdly, this application provides a car seat that uses the novel car seat heating device described above.
[0016] In summary, this technical solution specifically discloses a novel heating device, control method, and car seat for automobiles. The heating device includes a heating pad body, which comprises a substrate, and a heating component and a temperature sensing component disposed on the substrate. The heating component includes at least two electrically connected heating wires, the first heating wire having a different resistance per unit length than the second heating wire. The heating surface of the heating pad body includes at least a main heating area and a sensor sensing area, with the temperature sensing component disposed within the sensor sensing area. The main heating area is the heating region of the heating surface that comes into contact with the human body, and the sensor sensing area is the remaining area of the heating surface that cooperates with the main heating area. The temperature sensing component is disposed within the sensor sensing area and electrically connected to a control component. The control component acquires ambient temperature information around the second heating wire within the sensor sensing area through the temperature sensing component and adjusts the heating temperature provided to the human body by the heating component located in the main heating area based on the ambient temperature information.
[0017] Existing seat heating pad systems often employ a denser arrangement of heating wires to absorb more heat to reach the set temperature, which directly increases the amount of wire used and thus raises raw material costs. In this application, the heating surface of the heating pad body is divided into a main heating area and a sensor sensing area, with a first heating wire and a second heating wire of different resistance per unit length laid out respectively. This allows the area around the second heating wire to heat up faster. By using a temperature sensing component to collect the ambient temperature information around the second heating wire, the actual heating temperature of the main heating area can be accurately determined, facilitating subsequent control and adjustment of the main heating area. This avoids the failure of control in low-level heating modes and eliminates the need to arrange a large number of heating wires at the sensor location, effectively reducing production costs. Attached Figure Description
[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the first structure of a novel heating device for car seats.
[0019] Figure 2 This is a schematic diagram of a second structure for a novel heating device for car seats.
[0020] Figure 3 This is a schematic diagram of a third structure for a novel heating device for car seats.
[0021] Figure 4 This is a schematic diagram of the fourth structure of a novel heating device for car seats.
[0022] Figure 5 This is an enlarged structural diagram of point A of a novel car seat heating device. Figure 6 This is a flowchart illustrating a control method for a novel heating device for car seats.
[0023] The following are the labels in the diagram: 1. Heating pad body; 2. Substrate; 21. Main heating area; 22. Sensor sensing area; 3. Heating assembly; 31. First heating wire; 32. Second heating wire; 33. Lead-out conductive part; 331. First lead-out conductive part; 332. Second lead-out conductive part; 4. Temperature sensing assembly; 5. First protective structure; 6. Second protective structure; 7. Clearance part. Detailed Implementation
[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.
[0025] It should be noted that the novel car seat heating device in this application is a heating device that can be installed in positions such as seats, steering wheels, armrests, and door panels to provide heat to the human body. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] Example 1 Please refer to Figures 1-4 The diagram shown in this embodiment illustrates the structure of a first to fourth type of a novel car seat heating device. This heating device is installed on a car seat and is used to provide heat to a person sitting on the car seat. Specifically, the heating device includes: Heating pad body 1, the heating pad body 1 includes: substrate 2, and heating component 3 and temperature sensing component 4 disposed on substrate 2; The heating assembly 3 includes at least: a first heating wire 31 and a second heating wire 32 electrically connected, wherein the resistance per unit length of the first heating wire 31 and the resistance per unit length of the second heating wire 32 are different; The heating surface of the heating pad body 1 includes at least a main heating area 21 and a sensor sensing area 22, and the temperature sensing component 4 is disposed in the sensor sensing area 22; wherein, the main heating area 21 is the heating area of the heating surface used for contact with the human body, and the sensor sensing area 22 is the remaining area of the heating surface that cooperates with the main heating area 21. The temperature sensing component 4 is disposed in the sensor sensing area 22 and is electrically connected to the control component. The control component is used to obtain the ambient temperature information around the second heating wire 32 in the sensor sensing area 22 through the temperature sensing component 4, and to control and adjust the heating component 3 located in the main heating area 21 to provide heating temperature to the human body according to the ambient temperature information.
[0027] In this embodiment, the heating pad body 1 is the main structure of the entire novel car seat heating device. It first has two flexible substrates to form a pad structure. A heating component 3 and a temperature sensing component 4 are arranged on one of the substrates. The heating component 3 is used to realize the heating function of the heating pad, and the temperature sensing component 4 is used to collect ambient temperature information in real time to control the heating temperature provided to the human body by the novel car seat heating device. At the same time, in order to ensure the ventilation of the heating pad and the convenience of installation of other parts inside the car, the heating pad body 1 is generally provided with some ventilation holes and clearance parts 7. The clearance parts 7 are to ensure the flatness of the connection between the seat cover and the seat foam. Since the seat cover is often fixed to the seat foam by a hanging structure, the seat foam will have a pre-reserved fixing groove to fix the hanging structure in the fixing groove of the seat foam. If the heating pad is placed on the A side of the seat to provide heat to the human body, the clearance parts 7 corresponding to the fixing groove need to be opened to fix the seat cover and the seat foam.
[0028] Specifically, the heating component 3 includes at least two electrically connected first heating wires 31 and second heating wires 32. When the two heating wires are energized, they can generate heat to achieve the heating function. The first heating wires 31 and second heating wires 32 have different distribution patterns on the substrate, and the two heating wires also have different connection methods. The specific settings need to be determined by technicians according to the actual application scenario. The temperature sensing component 4 is located within the sensor sensing area 22, and its periphery is the second heating wire 32. It is also the main detection location for the temperature sensing component 4 to obtain ambient temperature information. Therefore, the temperature sensing component 4 can accurately obtain ambient temperature information. At the same time, in the various schematic diagrams, the first heating wires 31 and second heating wires 32 can also be distinguished based on the thickness of the line segments. However, the thickness of the line segments is only for the convenience of distinguishing the two heating wires and does not limit their actual structure.
[0029] Furthermore, the upper surface of the substrate 2 forms the heating surface of the heating pad body 1, which includes a main heating area 21 and a sensor sensing area 22. The main heating area 21 is used to heat the human body, and can be further divided into a leg heating area and a buttock heating area, which are used to contact and provide heat to the legs and buttocks of the human body, respectively. (See [reference needed]). Figure 2 In the middle, the area close to the sensor sensing area 22 is the buttock heating area, and the other heating area is the leg heating area; the sensor sensing area 22 is located at the edge of the substrate 2, and the temperature sensing component 4 is located in the sensor sensing area 22 to obtain the ambient temperature information around the second heating wire 32, thereby systematically controlling and adjusting the heating temperature provided to the human body by the heating pad body 1.
[0030] It should be noted that, to avoid the problem of low-level heating mode control failure caused by rapid heat dissipation of the temperature sensing component 4 due to ambient environment or seat cover factors, the unit length resistance of the first heating wire 31 and the unit length resistance of the second heating wire 32 are set differently. The purpose is to allow the second heating wire 32 to heat up more quickly. This differs from the traditional method of using a set temperature close to room temperature as the switching condition for low heating levels. By differentiating the unit length resistance of the first heating wire 31 and the second heating wire 32, the temperature sensing component 4 can also reach the set temperature threshold above the ambient temperature for its own level more quickly, no longer limited by the breathability of the seat cover or the ambient temperature. This allows for more accurate guidance in controlling and adjusting the heating temperature provided by the heating pad body 1 to the human body. That is, by accurately collecting ambient temperature information, the control component can determine and control the heating temperature of the main heating zone 21 based on the real-time ambient temperature information and the pre-defined correspondence between the main heating zone temperature and the sensor component. Alternatively, it can calculate the heating temperature provided by the main heating zone 21 to the human body based on the pre-defined unit length resistance of the first heating wire 31 and the pre-defined unit length resistance of the second heating wire 32. Here, the unit length resistance refers to the resistance value of the heating wire per unit length, so as to achieve more accurate detection of the heating temperature of the main heating zone 21. Furthermore, the working mode of the heating component 3 can be controlled and adjusted based on the calculated heating temperature. This design also avoids the assembly difficulties and cost problems caused by increasing the temperature generated in the sensor sensing area by densely arranging the heating wires.
[0031] In a preferred embodiment, the first heating wire 31 and the second heating wire 32 are connected in series; one end of at least two second heating wires 32 extends through the sensor sensing area 22 to the main heating area 21 and is respectively connected to both ends of the first heating wire 31, and the other end of the two second heating wires 32 is respectively electrically connected to an external circuit; the resistance per unit length of the second heating wire 32 is greater than the resistance per unit length of the first heating wire 31. The heating temperature includes a first temperature and a second temperature; the first temperature is the heating temperature of the first heating wire 31 within the main heating zone 21; and the second temperature is the heating temperature of the second heating wire 32 extending into the main heating zone 21.
[0032] Specifically, see Figure 2 or Figure 4As disclosed above, a series connection of a first heating wire 31 and a second heating wire 32 is provided. Both the first heating wire 31 and the second heating wire 32 are formed by bending a single heating wire. The two ends of the first heating wire 31 are respectively connected to a second heating wire 32. The free ends formed by the connection of the two second heating wires 32 are electrically connected to the external circuit, thereby forming a connection with the control component. Here, both the first heating wire 31 and the second heating wire 32 are used for conducting heat generation. At the same time, the second heating wire 32 is relatively long. The actual lengths of the two wires can be arranged at the legs or buttocks of the occupant where heating is required. This can provide heat to the human body and ensure that the heat emitted by the second heating wire 32 can be collected by the temperature sensing component 4, thereby obtaining accurate ambient temperature information.
[0033] With this arrangement of heating wires, the heating temperature provided to the human body is divided into a first temperature generated by the first heating wire 31 within the main heating area 21 and a second temperature generated by the second heating wire 32 extending to the main heating area 21. This method enables heating different parts of the human body at different temperatures. Taking a seat heating pad as an example, the first temperature corresponds to the heating area of the buttocks, while the second temperature corresponds to the heating area of the legs. The distinction between the first and second temperatures is essentially a distinction between the first heating wire 31 and the second heating wire 32, as their resistance values per unit length are different, naturally resulting in different heating temperatures when the same current is applied. It should also be noted that since part of the second heating wire 32 extends into the main heating area 21, its temperature will naturally differ from that of the part of the second heating wire 32 located within the sensor sensing area 22 due to factors such as ambient temperature and the breathability of the cover. However, in the actual calibration experiment, the difference in resistance values per unit length between the selected first heating wire 31 and the second heating wire 32 is not significant.
[0034] In a preferred embodiment, see Figure 1 One end of the second heating wire 32 is connected to one end of the first heating wire 31, and one end of the first heating wire 31 and the other end of the second heating wire 32 are respectively electrically connected to an external circuit. The heating temperature includes: a first temperature; the first temperature is the heating temperature of the first heating wire 31 in the main heating zone 21; the second heating wire 32 is located in the sensor sensing zone 22, and the second heating wire 32 is used to connect the first heating wire 31 to the external circuit and cooperate with the temperature sensing component 4 and the first heating wire 321 to obtain the temperature of the main heating zone 21.
[0035] Unlike the first series connection scenario, when the second heating wire 32 is connected to only one end of the first heating wire 31, and the second heating wire 32 is only located within the sensor sensing area 22, the second heating wire 32 cannot provide much heat. Therefore, it is only used as a heating wire for electrical connection. That is, the second heating wire 32 is used to connect the first heating wire 31 to the external circuit. Also, since the second heating wire 32 is located at the temperature sensing component 4, the temperature sensing component 4 can directly calculate or obtain the heating temperature of the main heating area 21 where the first heating wire 31 is located through the second heating wire 32. Since only the first heating wire 31 is arranged in the main heating area 21, the heating temperature of the main heating area 21 is the first temperature, which is the temperature generated by the first heating wire 31 in the main heating area 21.
[0036] In a preferred embodiment, the first heating wire 31 and the second heating wire 32 are connected in parallel, and the two ends of the first heating wire 31 and the second heating wire 32 are electrically connected to an external circuit respectively; the resistance per unit length of the second heating wire 32 is less than the resistance per unit length of the first heating wire 31.
[0037] Specifically, such as Figure 3 The first heating wire 31 and the second heating wire 32 are shown in parallel. Both the first heating wire 31 and the second heating wire 32 are formed by bending at least one resistance wire. Both heating wires extend from the main heating area 21 to the sensor sensing area 22. The two ends of the first heating wire 31 and the second heating wire 32 located in the sensor sensing area 22 are respectively connected to the external circuit, so that the first heating wire 31 and the second heating wire 32 are in parallel and are used to conduct heat.
[0038] It should be noted that under such a structural arrangement, the heating temperature will also include different first and second temperatures. Consistent with the previous principle, the area in the main heating zone 21 where only the first heating wire 31 is arranged can provide the first temperature; the area in the main heating zone 21 where both the second heating wire 32 extending into it and the first heating wire 31 are arranged can provide the second temperature. This method can also achieve heating different parts of the human body at different temperatures. Here, the second heating wire 32 can also be arranged only in the sensor sensing area 22. In this case, the second heating wire 32 is only used as a heating wire for electrical connection. Its specific setting can be adjusted according to actual needs.
[0039] In addition, the series or parallel connection of the first heating wire 31 and the second heating wire 32 needs to be selected according to the actual situation. In addition, the first heating wire 31 and the second heating wire 32 may also be composed of multiple heating wires that are bent and connected together, without special limitation here.
[0040] Furthermore, the aforementioned relationship between the preset resistance per unit length of the second heating wire 32 and the first heating wire 31 is explained as follows: The second heating wire 32 and the first heating wire 31 are connected in series, and the resistance per unit length of the second heating wire 32 is greater than the resistance per unit length of the first heating wire 31; the second heating wire 32 and the first heating wire 31 are connected in parallel, and the resistance per unit length of the second heating wire 32 is less than the resistance per unit length of the first heating wire 31.
[0041] Since the first heating wire 31 and the second heating wire 32 can be connected in both series and parallel, in order to ensure that the second heating wire per unit length can generate relatively more heat, when the second heating wire 32 and the first heating wire 31 are connected in series, the resistance per unit length of the second heating wire 32 is greater than the resistance per unit length of the first heating wire 31. Conversely, when they are connected in parallel, the resistance per unit length of the second heating wire 32 is less than the resistance per unit length of the first heating wire 31.
[0042] Specifically, when the first heating wire 31 and the second heating wire 32 are connected in series, the current flowing through them is the same, according to Joule's law. It can be seen that when the resistance per unit length of the second heating wire 32 is greater than that of the first heating wire 31, the heat generated by the second heating wire 32 is greater than that generated by the first heating wire 31. Conversely, when the first heating wire 31 and the second heating wire 32 are connected in parallel, the voltage applied to both is the same, which is consistent with Joule's law. It can be seen that when the resistance per unit length of the second heating wire 32 is less than that per unit length of the first heating wire 31, the heat generated by the second heating wire 32 when heating is greater than that generated by the first heating wire 31 when heating.
[0043] Next, based on the above description of the unit length resistance of the first heating wire 31 and the second heating wire 32, and based on the obtained ambient temperature information, the principle of controlling and adjusting the heating temperature provided to the human body by the heating pad body 1 is as follows: When the second heating wire 32 is used for conduction and heating, the temperature sensing component 4 obtains the ambient temperature information based on the heat generated by the second heating wire 32 located within the sensor sensing 22. Since the first heating wire 31 and the second heating wire 32 are currently connected to the same current or voltage, that is: (1) When the first heating wire 31 and the second heating wire 32 are connected in series, and given the ambient temperature information, the ratio of the temperature of the main heating zone 21 to the ambient temperature information is the ratio of the resistance per unit length of the first heating wire 31 to the resistance per unit length of the second heating wire 32; assuming the temperature of the main heating zone 21 and the ambient temperature information are respectively... and The resistance per unit length of the first heating wire 31 and the resistance per unit length of the second heating wire 32 are respectively and For example, the temperature of the main heating zone 21 is based on The relation can be calculated from this.
[0044] (2) When the first heating wire 31 and the second heating wire 32 are connected in parallel, and given the ambient temperature information, the ratio of the temperature of the main heating zone 21 to the ambient temperature information is the ratio of the resistance per unit length of the second heating wire 32 to the resistance per unit length of the first heating wire 31. Let the temperature of the main heating zone 21 and the ambient temperature information be respectively... and The resistance per unit length of the first heating wire 31 and the resistance per unit length of the second heating wire 32 are respectively and For example, the temperature of the main heating zone 21 is based on The relation can be calculated from this.
[0045] It should be noted that, in selecting the unit length resistance of the first heating wire 31 and the second heating wire 32, in order to ensure a more accurate temperature provided by the subsequent heating device, in addition to relying on formula calculations, it is also necessary to collect the actual temperature of the main heating zone 21. Specifically, the ambient temperature information is collected by the temperature sensing component 4, and the temperature of the main heating zone 21 can be obtained through a single sensing pad, or by attaching multiple sensing pads to the leg heating zone and the buttock heating zone, and then processing the temperature of multiple points by averaging the temperatures of multiple points or other preset methods. Therefore, after confirming the relationship between the ambient temperature information and the numerical values of the main heating zone 21 in advance, the technicians continuously adjust... and The ratio is adjusted until it matches the set temperature relationship.
[0046] Based on the above description, it can be seen that the heating device in this embodiment does not require a separate temperature sensor to be installed in the main heating zone 21. It only needs to adjust the preset unit length resistance relationship between the first heating wire 31 and the second heating wire 32 according to the pre-set ambient temperature information and the numerical relationship of the main heating zone 21, so that it can normally trigger operations such as temperature shifting or temperature adjustment when the ambient temperature is higher than the ambient temperature. For example, the design requirement of the heating device is that when the preset temperature threshold corresponding to one of the heating shifting functions is 25°C, and the setting is that the heating temperature of the main heating zone 21 can reach 35°C, this is equivalent to giving a target requirement for selecting the unit length resistance of the first heating wire 31 and the second heating wire 32. During calibration tests, it is necessary to continuously adjust the resistance based on the real-time temperature of the main heating zone 21 and the sensor sensing area 22. and The ratio is adjusted to meet the above-mentioned requirements. In practical applications, if the ambient temperature information is displayed as 25°, it means that the current heating temperature of the main heating zone 21 has reached 35°. The control component can then perform further control on the heating pad body 1, such as stopping heating or reducing the current to lower the temperature of the main heating zone 21.
[0047] In a preferred embodiment, see Figure 3 The heating component 3 also includes: a conductive lead-out part 33, which is provided in correspondence with the temperature sensing component 4; The conductive lead-out portion 33 includes: a first conductive lead-out portion 331 and a second conductive lead-out portion 332; the first conductive lead-out portion 331 and the second conductive lead-out portion 332 are used to realize the connection between the first heating wire 31 and the second heating wire 32 and the external circuit.
[0048] Specifically, in addition to the second heating wire 32 and the first heating wire 31 for generating heat, the heating assembly also includes a conductive lead-out section 33. One end of the conductive lead-out section 33 is connected to the first heating wire 31 and the second heating wire 32, while the other end is used to connect to an external heating circuit or controller, so as to adjust and control the operation of the heating pad through the controller. The conductive lead-out section 33 includes a first conductive lead-out section 331 and a second conductive lead-out section 332, which can be understood as positive and negative wires, thereby realizing the connection between the first heating wire 31 and the second heating wire 32 and the external circuit.
[0049] In a preferred embodiment, see Figure 4 The heating component 3 also includes a conductive lead-out part 33, which is a circuit board structure. The temperature sensing component 4 is integrated inside the circuit board structure. The conductive lead-out part 33 is used to connect the first heating wire 31 and the second heating wire 32 with the external circuit.
[0050] Specifically, the conductive part 33 can also be replaced by a flexible circuit board with the same function. The flexible circuit board has advantages such as high integration, low foreign object sensation and good processability. It can integrate the temperature sensing component 4 inside the circuit board structure. The first heating wire 31 and the second heating wire 32 can be selectively connected to the first heating wire 31 and the second heating wire 32. The heating component 3 can be electrically connected to the external circuit through the circuit board structure.
[0051] In a preferred embodiment, see Figure 5 A first protective structure 5 is provided at the connection point of the first heating wire 31, the second heating wire 32 and the lead-out conductive part 33, and the first protective structure 5 is provided at each of the connection points.
[0052] Furthermore, it also includes a second protective structure 6, which is disposed on top of the first protective structure 5.
[0053] Specifically, to ensure the stability of the connection between the first heating wire 31, the second heating wire 32, and the lead-out conductive part 33, this application embodiment proposes a first protective structure 5 and a second protective structure 6. The first protective structure 5 can be a heat-shrink tubing, and the second protective structure 6 can be a mesh protective layer. This is because the first heating wire 31 and the second heating wire 32 are generally connected by crimping, and the first heating wire 31 and the second heating wire 32 are also generally connected to the lead-out conductive part 33 by crimping. To ensure the electrical stability after connection, a heat-shrink tubing is provided at the connection point. After being heated, the heat-shrink tubing shrinks and tightly wraps the wire connection point to form an insulating layer, which can effectively avoid electrical faults such as short circuits and leakage. The mesh protective layer can be a nylon braided mesh tube or a metal braided mesh tube, etc., as needed.
[0054] Example 2 Based on the novel car seat heating device described in Embodiment 1, this application proposes a control method for the novel car seat heating device. The execution entity of this method can be a control component, combined with... Figure 6 The method includes the following steps: S100, The control component responds to the start signal of the heating device; S200: The control component monitors the ambient temperature information collected by the temperature sensor component in real time. S300: When the control component determines that the ambient temperature has reached the preset temperature threshold, it controls the heating device to adjust the heating temperature. The preset temperature threshold is determined by the heating level selected by the user, and the temperature value reflects the heating temperature of the heating device. Both the preset temperature threshold and the heating temperature are obtained through calibration experiments.
[0055] Specifically, when the heating device is turned on, the control component collects ambient temperature information from the temperature sensor component to monitor the heating status of the heating pad body 1 in real time. When it is determined that the ambient temperature information has reached the preset temperature threshold, the heating temperature of the heating device is adjusted in a timely manner. This adjustment includes controlling the heating device to stop heating or controlling the heating device to reduce the heating temperature.
[0056] Here, there are different preset temperature thresholds for different heating levels. The preset temperature threshold is determined by the heating level selected by the user. This preset temperature threshold is the boundary for judging whether to switch levels or adjust the temperature. For example, for high-level heating, the preset temperature threshold can be set to 15℃, and for low-level heating, the preset temperature threshold can be set to 25℃.
[0057] It should be noted that the correspondence between ambient temperature information and heating temperature is obtained through calibration experiments. For details, please refer to the aforementioned principle of controlling and adjusting the heating pad body 1 to provide heating to the human body. When the ambient temperature reaches the preset temperature threshold, it naturally means that the main heating zone currently providing heating to the human body has reached the corresponding temperature, thus effectively monitoring the heating temperature of the heating device and facilitating timely temperature adjustment by the control components.
[0058] Example 3 Based on the novel heating device for car seats proposed in Embodiment 1, this application proposes a car seat in which the novel heating device can be installed on the seat surface or armrest. The novel heating device can reach the trigger temperature for working in a timely manner, and through temperature control with an external controller, it can ensure the driving and riding comfort and experience of the driver and passengers.
[0059] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A novel heating device for car seats, characterized in that, The heating device is disposed on the car seat and is used to provide heat to the human body sitting on the car seat. The heating device includes: The heating pad body (1) includes: a substrate (2), and a heating component (3) and a temperature sensing component (4) disposed on the substrate (2). The heating assembly (3) includes at least a first heating wire (31) and a second heating wire (32) electrically connected, wherein the resistance per unit length of the first heating wire (31) and the resistance per unit length of the second heating wire (32) are different. The heating surface of the heating pad body (1) includes at least a main heating area (21) and a sensor sensing area (22), and the temperature sensing component (4) is disposed in the sensor sensing area (22); wherein, the main heating area (21) is the heating area of the heating surface used for contact with the human body, and the sensor sensing area (22) is the remaining area of the heating surface that cooperates with the main heating area (21); The temperature sensing component (4) is located in the sensor sensing area (22) and is electrically connected to a control component. The control component is used to obtain the ambient temperature information around the second heating wire (32) in the sensor sensing area (22) through the temperature sensing component (4), and to control and adjust the heating component (3) located in the main heating area (21) to provide heating temperature to the human body according to the ambient temperature information.
2. The novel heating device for automobile seats according to claim 1, characterized in that, The first heating wire (31) and the second heating wire (32) are connected in series; one end of at least two of the second heating wires (32) extends through the sensor sensing area (22) to the main heating area (21) and is respectively connected to both ends of the first heating wire (31), and the other ends of the two second heating wires (32) are respectively electrically connected to the external circuit; the resistance per unit length of the second heating wire (32) is greater than the resistance per unit length of the first heating wire (31); The heating temperature includes a first temperature and a second temperature; the first temperature is the heating temperature of the first heating wire (31) in the main heating zone (21); the second temperature is the heating temperature of the second heating wire (32) extending into the main heating zone (21).
3. The novel heating device for automobile seats according to claim 1, characterized in that, One end of the second heating wire (32) is connected to one end of the first heating wire (31), and one end of the first heating wire (31) and the other end of the second heating wire (32) are electrically connected to an external circuit respectively; The heating temperature includes: a first temperature; the first temperature is the heating temperature of the first heating wire (31) in the main heating zone (21); the second heating wire (32) is located in the sensor sensing zone (22); the second heating wire (32) is used to connect the first heating wire (31) to the external circuit and cooperate with the temperature sensing component (4) and the first heating wire (321) to obtain the first temperature.
4. A novel heating device for automobile seats according to claim 1, characterized in that, The first heating wire (31) and the second heating wire (32) are connected in parallel. The two ends of the first heating wire (31) and the second heating wire (32) are electrically connected to the external circuit respectively. The resistance per unit length of the second heating wire (32) is less than the resistance per unit length of the first heating wire (31).
5. A novel heating device for automobile seats according to any one of claims 2-4, characterized in that, The heating component (3) further includes a conductive lead-out section (33), which is a circuit board structure. The temperature sensing component (4) is integrated inside the circuit board structure. The first heating wire (31) and the second heating wire (32) are connected to the external circuit through the conductive lead-out section (33).
6. A novel heating device for automobile seats according to claim 5, characterized in that, A first protective structure (5) is provided at the connection point of the first heating wire (31), the second heating wire (32) and the lead-out conductive part (33), and the first protective structure (5) is provided at each of the connection points.
7. A novel heating device for automobile seats according to claim 6, characterized in that, The heating device further includes a second protective structure (6), which is disposed on the first protective structure (5).
8. A control method for a novel automotive seat heating device, using the novel automotive seat heating device according to any one of claims 1-8, the method comprising the following steps: In response to the start signal of the heating device; Real-time monitoring of ambient temperature information collected by the temperature sensor assembly; When the ambient temperature information is determined to reach a preset temperature threshold, the heating device is controlled to adjust the heating temperature.
9. The control method for a novel heating device for automobile seats according to claim 8, characterized in that, The preset temperature threshold is determined by the heating level selected by the user, the ambient temperature information is used to reflect the heating temperature of the heating device, and the preset temperature threshold and the heating temperature are obtained through calibration experiments.
10. A car seat, characterized in that, The application is a novel heating device for automobile seats as described in any one of claims 1-7.